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 ${name}_extralibs="\$@"
1026 }
1027
1028 check_pkg_config(){
1029     log check_pkg_config "$@"
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 $name &&
1042         add_cflags    "$pkg_cflags" &&
1043         eval $(sanitize_var_name ${name}_extralibs)="\$pkg_libs"
1044 }
1045
1046 check_exec(){
1047     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1048 }
1049
1050 check_exec_crash(){
1051     log check_exec_crash "$@"
1052     code=$(cat)
1053
1054     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1055     # are safe but may not be available everywhere.  Thus we use
1056     # raise(SIGTERM) instead.  The check is run in a subshell so we
1057     # can redirect the "Terminated" message from the shell.  SIGBUS
1058     # is not defined by standard C so it is used conditionally.
1059
1060     (check_exec "$@") >> $logfile 2>&1 <<EOF
1061 #include <signal.h>
1062 static void sighandler(int sig){
1063     raise(SIGTERM);
1064 }
1065 int foo(void){
1066     $code
1067 }
1068 int (*func_ptr)(void) = foo;
1069 int main(void){
1070     signal(SIGILL, sighandler);
1071     signal(SIGFPE, sighandler);
1072     signal(SIGSEGV, sighandler);
1073 #ifdef SIGBUS
1074     signal(SIGBUS, sighandler);
1075 #endif
1076     return func_ptr();
1077 }
1078 EOF
1079 }
1080
1081 check_type(){
1082     log check_type "$@"
1083     headers=$1
1084     type=$2
1085     shift 2
1086     disable_sanitized "$type"
1087     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1088 }
1089
1090 check_struct(){
1091     log check_struct "$@"
1092     headers=$1
1093     struct=$2
1094     member=$3
1095     shift 3
1096     disable_sanitized "${struct}_${member}"
1097     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1098         enable_sanitized "${struct}_${member}"
1099 }
1100
1101 check_builtin(){
1102     log check_builtin "$@"
1103     name=$1
1104     headers=$2
1105     builtin=$3
1106     shift 3
1107     disable "$name"
1108     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1109 }
1110
1111 check_compile_assert(){
1112     log check_compile_assert "$@"
1113     name=$1
1114     headers=$2
1115     condition=$3
1116     shift 3
1117     disable "$name"
1118     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1119 }
1120
1121 require(){
1122     log require "$@"
1123     name_version="$1"
1124     name="${1%% *}"
1125     headers="$2"
1126     func="$3"
1127     shift 3
1128     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1129 }
1130
1131 require_header(){
1132     log require "$@"
1133     header="$1"
1134     shift
1135     check_header "$header" "$@" || die "ERROR: $header not found"
1136 }
1137
1138 require_cpp_condition(){
1139     log require "$@"
1140     header="$1"
1141     condition="$2"
1142     shift 2
1143     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1144 }
1145
1146 require_pkg_config(){
1147     log require_pkg_config "$@"
1148     pkg_version="$2"
1149     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1150 }
1151
1152 hostcc_e(){
1153     eval printf '%s\\n' $HOSTCC_E
1154 }
1155
1156 hostcc_o(){
1157     eval printf '%s\\n' $HOSTCC_O
1158 }
1159
1160 check_host_cc(){
1161     log check_host_cc "$@"
1162     cat > $TMPC
1163     log_file $TMPC
1164     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1165 }
1166
1167 check_host_cpp(){
1168     log check_host_cpp "$@"
1169     cat > $TMPC
1170     log_file $TMPC
1171     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1172 }
1173
1174 check_host_cppflags(){
1175     log check_host_cppflags "$@"
1176     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1177 #include <stdlib.h>;
1178 EOF
1179 }
1180
1181 check_host_cflags(){
1182     log check_host_cflags "$@"
1183     set -- $($host_cflags_filter "$@")
1184     check_host_cc "$@" <<EOF && append host_cflags "$@"
1185 int x;
1186 EOF
1187 }
1188
1189 check_host_cpp_condition(){
1190     log check_host_cpp_condition "$@"
1191     header=$1
1192     condition=$2
1193     shift 2
1194     check_host_cpp "$@" <<EOF
1195 #include <$header>
1196 #if !($condition)
1197 #error "unsatisfied condition: $condition"
1198 #endif
1199 EOF
1200 }
1201
1202 apply(){
1203     file=$1
1204     shift
1205     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1206 }
1207
1208 cp_if_changed(){
1209     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1210     mkdir -p "$(dirname $2)"
1211     cp -f "$1" "$2"
1212 }
1213
1214 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1215 # system-dependent things.
1216
1217 AVCODEC_COMPONENTS="
1218     bsfs
1219     decoders
1220     encoders
1221     hwaccels
1222     parsers
1223 "
1224
1225 AVDEVICE_COMPONENTS="
1226     indevs
1227     outdevs
1228 "
1229 AVFILTER_COMPONENTS="
1230     filters
1231 "
1232 AVFORMAT_COMPONENTS="
1233     demuxers
1234     muxers
1235     protocols
1236 "
1237
1238 AVRESAMPLE_COMPONENTS=""
1239 AVUTIL_COMPONENTS=""
1240
1241 COMPONENT_LIST="
1242     $AVCODEC_COMPONENTS
1243     $AVDEVICE_COMPONENTS
1244     $AVFILTER_COMPONENTS
1245     $AVFORMAT_COMPONENTS
1246     $AVRESAMPLE_COMPONENTS
1247     $AVUTIL_COMPONENTS
1248 "
1249
1250 EXAMPLE_LIST="
1251     decode_audio_example
1252     decode_video_example
1253     encode_audio_example
1254     encode_video_example
1255     filter_audio_example
1256     metadata_example
1257     output_example
1258     qsvdec_example
1259     transcode_aac_example
1260 "
1261
1262 # catchall list of things that require external libs to link
1263 EXTRALIBS_LIST="
1264     cpu_init
1265     cws2fws
1266 "
1267
1268 HWACCEL_LIBRARY_NONFREE_LIST="
1269     cuda
1270     cuvid
1271     libnpp
1272 "
1273 HWACCEL_LIBRARY_LIST="
1274     $HWACCEL_LIBRARY_NONFREE_LIST
1275     d3d11va
1276     dxva2
1277     libmfx
1278     mmal
1279     nvenc
1280     omx
1281     vaapi
1282     vda
1283     vdpau
1284 "
1285
1286 EXTERNAL_LIBRARY_GPL_LIST="
1287     libcdio
1288     libx264
1289     libx265
1290     libxavs
1291     libxvid
1292 "
1293
1294 EXTERNAL_LIBRARY_NONFREE_LIST="
1295     libfaac
1296     libfdk_aac
1297     openssl
1298 "
1299
1300 EXTERNAL_LIBRARY_VERSION3_LIST="
1301     libopencore_amrnb
1302     libopencore_amrwb
1303     libvo_aacenc
1304     libvo_amrwbenc
1305 "
1306
1307 EXTERNAL_LIBRARY_LIST="
1308     $EXTERNAL_LIBRARY_GPL_LIST
1309     $EXTERNAL_LIBRARY_NONFREE_LIST
1310     $EXTERNAL_LIBRARY_VERSION3_LIST
1311     avisynth
1312     avxsynth
1313     frei0r
1314     gnutls
1315     libbs2b
1316     libdc1394
1317     libdcadec
1318     libfontconfig
1319     libfreetype
1320     libgsm
1321     libhdcd
1322     libilbc
1323     libjack
1324     libkvazaar
1325     libmp3lame
1326     libopencv
1327     libopenh264
1328     libopenjpeg
1329     libopus
1330     libpulse
1331     librtmp
1332     libschroedinger
1333     libsnappy
1334     libspeex
1335     libtheora
1336     libtwolame
1337     libvorbis
1338     libvpx
1339     libwavpack
1340     libwebp
1341     libxcb
1342     libxcb_shm
1343     libxcb_xfixes
1344 "
1345
1346 SYSTEM_LIBRARY_LIST="
1347     bzlib
1348     zlib
1349 "
1350
1351 FEATURE_LIST="
1352     gray
1353     hardcoded_tables
1354     omx_rpi
1355     runtime_cpudetect
1356     safe_bitstream_reader
1357     shared
1358     small
1359     sram
1360     static
1361     swscale_alpha
1362 "
1363
1364 LIBRARY_LIST="
1365     avcodec
1366     avdevice
1367     avfilter
1368     avformat
1369     avresample
1370     avutil
1371     swscale
1372 "
1373
1374 LICENSE_LIST="
1375     gpl
1376     nonfree
1377     version3
1378 "
1379
1380 PROGRAM_LIST="
1381     avconv
1382     avplay
1383     avprobe
1384 "
1385
1386 SUBSYSTEM_LIST="
1387     dct
1388     doc
1389     error_resilience
1390     faan
1391     fft
1392     lsp
1393     lzo
1394     mdct
1395     network
1396     rdft
1397 "
1398
1399 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1400 CONFIG_LIST="
1401     $EXAMPLE_LIST
1402     $EXTERNAL_LIBRARY_LIST
1403     $HWACCEL_LIBRARY_LIST
1404     $FEATURE_LIST
1405     $LICENSE_LIST
1406     $LIBRARY_LIST
1407     $PROGRAM_LIST
1408     $SUBSYSTEM_LIST
1409     $SYSTEM_LIBRARY_LIST
1410     neon_clobber_test
1411     pic
1412     pod2man
1413     texi2html
1414     thumb
1415     valgrind_backtrace
1416     xmm_clobber_test
1417     $COMPONENT_LIST
1418 "
1419
1420 THREADS_LIST="
1421     pthreads
1422     w32threads
1423 "
1424
1425 ATOMICS_LIST="
1426     atomics_gcc
1427     atomics_suncc
1428     atomics_win32
1429 "
1430
1431 ARCH_LIST="
1432     aarch64
1433     alpha
1434     arm
1435     avr32
1436     avr32_ap
1437     avr32_uc
1438     bfin
1439     ia64
1440     m68k
1441     mips
1442     mips64
1443     parisc
1444     ppc
1445     ppc64
1446     s390
1447     sh4
1448     sparc
1449     sparc64
1450     tilegx
1451     tilepro
1452     tomi
1453     x86
1454     x86_32
1455     x86_64
1456 "
1457
1458 ARCH_EXT_LIST_ARM="
1459     armv5te
1460     armv6
1461     armv6t2
1462     armv8
1463     neon
1464     vfp
1465     vfpv3
1466 "
1467
1468 ARCH_EXT_LIST_X86_SIMD="
1469     amd3dnow
1470     amd3dnowext
1471     avx
1472     avx2
1473     fma3
1474     fma4
1475     mmx
1476     mmxext
1477     sse
1478     sse2
1479     sse3
1480     sse4
1481     sse42
1482     ssse3
1483     xop
1484 "
1485
1486 ARCH_EXT_LIST_PPC="
1487     altivec
1488     dcbzl
1489     ldbrx
1490     power8
1491     ppc4xx
1492     vsx
1493 "
1494
1495 ARCH_EXT_LIST_X86="
1496     $ARCH_EXT_LIST_X86_SIMD
1497     cpunop
1498     i686
1499 "
1500
1501 ARCH_EXT_LIST_MIPS="
1502     loongson
1503     mips32r1
1504     mips64r1
1505     mips32r2
1506     mips64r2
1507     mips32r6
1508     mips64r6
1509 "
1510
1511 ARCH_EXT_LIST="
1512     $ARCH_EXT_LIST_ARM
1513     $ARCH_EXT_LIST_MIPS
1514     $ARCH_EXT_LIST_PPC
1515     $ARCH_EXT_LIST_X86
1516     vis
1517 "
1518
1519 ARCH_FEATURES="
1520     aligned_stack
1521     fast_64bit
1522     fast_clz
1523     fast_cmov
1524     local_aligned_8
1525     local_aligned_16
1526     local_aligned_32
1527     simd_align_16
1528     simd_align_32
1529 "
1530
1531 BUILTIN_LIST="
1532     atomic_cas_ptr
1533     machine_rw_barrier
1534     MemoryBarrier
1535     mm_empty
1536     rdtsc
1537     sem_timedwait
1538     sync_val_compare_and_swap
1539 "
1540 HAVE_LIST_CMDLINE="
1541     inline_asm
1542     symver
1543     x86asm
1544 "
1545
1546 HAVE_LIST_PUB="
1547     bigendian
1548     fast_unaligned
1549 "
1550
1551 HEADERS_LIST="
1552     AVFoundation_AVFoundation_h
1553     alsa_asoundlib_h
1554     arpa_inet_h
1555     cdio_paranoia_h
1556     cdio_paranoia_paranoia_h
1557     d3d11_h
1558     dispatch_dispatch_h
1559     dev_bktr_ioctl_bt848_h
1560     dev_bktr_ioctl_meteor_h
1561     dev_ic_bt8xx_h
1562     dev_video_bktr_ioctl_bt848_h
1563     dev_video_meteor_ioctl_meteor_h
1564     direct_h
1565     dlfcn_h
1566     dxgidebug_h
1567     dxva_h
1568     gsm_h
1569     io_h
1570     mach_mach_time_h
1571     machine_ioctl_bt848_h
1572     machine_ioctl_meteor_h
1573     malloc_h
1574     poll_h
1575     sndio_h
1576     soundcard_h
1577     stdatomic_h
1578     sys_mman_h
1579     sys_param_h
1580     sys_resource_h
1581     sys_select_h
1582     sys_soundcard_h
1583     sys_time_h
1584     sys_un_h
1585     sys_videoio_h
1586     unistd_h
1587     valgrind_valgrind_h
1588     windows_h
1589     winsock2_h
1590 "
1591
1592 INTRINSICS_LIST="
1593     intrinsics_neon
1594 "
1595
1596 MATH_FUNCS="
1597     atanf
1598     atan2f
1599     cbrtf
1600     cosf
1601     exp2
1602     exp2f
1603     expf
1604     isinf
1605     isnan
1606     ldexpf
1607     llrint
1608     llrintf
1609     log2
1610     log2f
1611     log10f
1612     lrint
1613     lrintf
1614     powf
1615     rint
1616     round
1617     roundf
1618     sinf
1619     trunc
1620     truncf
1621 "
1622
1623 SYSTEM_FUNCS="
1624     aligned_malloc
1625     clock_gettime
1626     closesocket
1627     CommandLineToArgvW
1628     CoTaskMemFree
1629     CryptGenRandom
1630     fcntl
1631     flt_lim
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     LoadLibrary
1646     localtime_r
1647     mach_absolute_time
1648     MapViewOfFile
1649     memalign
1650     mkstemp
1651     mmap
1652     mprotect
1653     nanosleep
1654     posix_memalign
1655     sched_getaffinity
1656     SetConsoleTextAttribute
1657     setmode
1658     setrlimit
1659     Sleep
1660     strerror_r
1661     sysconf
1662     sysctl
1663     usleep
1664     VirtualAlloc
1665 "
1666
1667 TOOLCHAIN_FEATURES="
1668     as_arch_directive
1669     as_fpu_directive
1670     as_func
1671     as_object_arch
1672     asm_mod_q
1673     attribute_may_alias
1674     attribute_packed
1675     blocks_extension
1676     ebp_available
1677     ebx_available
1678     gnu_as
1679     ibm_asm
1680     inline_asm_labels
1681     pragma_deprecated
1682     symver_asm_label
1683     symver_gnu_asm
1684     vfp_args
1685     xform_asm
1686     xmm_clobbers
1687 "
1688
1689 TYPES_LIST="
1690     CONDITION_VARIABLE_Ptr
1691     CUVIDDECODECREATEINFO_bitDepthMinus8
1692     socklen_t
1693     struct_addrinfo
1694     struct_group_source_req
1695     struct_ip_mreq_source
1696     struct_ipv6_mreq
1697     struct_pollfd
1698     struct_rusage_ru_maxrss
1699     struct_sockaddr_in6
1700     struct_sockaddr_sa_len
1701     struct_sockaddr_storage
1702     struct_v4l2_frmivalenum_discrete
1703 "
1704
1705 HAVE_LIST="
1706     $ARCH_EXT_LIST
1707     $(add_suffix _external $ARCH_EXT_LIST)
1708     $(add_suffix _inline   $ARCH_EXT_LIST)
1709     $ARCH_FEATURES
1710     $BUILTIN_LIST
1711     $HAVE_LIST_CMDLINE
1712     $HAVE_LIST_PUB
1713     $HEADERS_LIST
1714     $INTRINSICS_LIST
1715     $MATH_FUNCS
1716     $SYSTEM_FUNCS
1717     $THREADS_LIST
1718     $TOOLCHAIN_FEATURES
1719     $TYPES_LIST
1720     dos_paths
1721     libc_msvcrt
1722     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1723     sdl
1724     section_data_rel_ro
1725     threads
1726     uwp
1727     vaapi_drm
1728     vaapi_x11
1729     vdpau_x11
1730 "
1731
1732 # options emitted with CONFIG_ prefix but not available on the command line
1733 CONFIG_EXTRA="
1734     aandcttables
1735     ac3dsp
1736     adts_header
1737     audio_frame_queue
1738     audiodsp
1739     blockdsp
1740     bswapdsp
1741     cabac
1742     cbs
1743     cbs_h264
1744     cbs_h265
1745     cbs_mpeg2
1746     dirac_parse
1747     dvprofile
1748     faandct
1749     faanidct
1750     fdctdsp
1751     flacdsp
1752     fmtconvert
1753     g722dsp
1754     gmp
1755     golomb
1756     gplv3
1757     h263dsp
1758     h264chroma
1759     h264dsp
1760     h264parse
1761     h264pred
1762     h264qpel
1763     hevc_ps
1764     hpeldsp
1765     huffman
1766     huffyuvdsp
1767     huffyuvencdsp
1768     idctdsp
1769     iirfilter
1770     imdct15
1771     intrax8
1772     iso_media
1773     ividsp
1774     jpegtables
1775     lgplv3
1776     libx262
1777     libxcb_shape
1778     lpc
1779     lzf
1780     me_cmp
1781     mpeg_er
1782     mpegaudio
1783     mpegaudiodsp
1784     mpegaudioheader
1785     mpegvideo
1786     mpegvideoenc
1787     mss34dsp
1788     pixblockdsp
1789     qpeldsp
1790     qsv
1791     qsvdec
1792     qsvenc
1793     rangecoder
1794     riffdec
1795     riffenc
1796     rtpdec
1797     rtpenc_chain
1798     rv34dsp
1799     sinewin
1800     snappy
1801     srtp
1802     startcode
1803     texturedsp
1804     texturedspenc
1805     tpeldsp
1806     vaapi_encode
1807     vc1dsp
1808     videodsp
1809     vp3dsp
1810     vp56dsp
1811     vp8dsp
1812     wma_freqs
1813     wmv2dsp
1814 "
1815
1816 CMDLINE_SELECT="
1817     $ARCH_EXT_LIST
1818     $CONFIG_LIST
1819     $HAVE_LIST_CMDLINE
1820     $THREADS_LIST
1821     asm
1822     cross_compile
1823     debug
1824     extra_warnings
1825     logging
1826     lto
1827     optimizations
1828     rpath
1829 "
1830
1831 PATHS_LIST="
1832     bindir
1833     datadir
1834     docdir
1835     incdir
1836     libdir
1837     mandir
1838     prefix
1839     shlibdir
1840 "
1841
1842 CMDLINE_SET="
1843     $PATHS_LIST
1844     ar
1845     arch
1846     as
1847     cc
1848     objcc
1849     cpu
1850     cross_prefix
1851     custom_allocator
1852     dep_cc
1853     env
1854     extra_version
1855     host_cc
1856     host_cflags
1857     host_extralibs
1858     host_ld
1859     host_ldflags
1860     host_os
1861     ignore_tests
1862     ld
1863     logfile
1864     malloc_prefix
1865     nm
1866     optflags
1867     pkg_config
1868     pkg_config_flags
1869     random_seed
1870     samples
1871     sysinclude
1872     sysroot
1873     target_exec
1874     target_os
1875     target_path
1876     target_samples
1877     toolchain
1878     x86asmexe
1879 "
1880
1881 CMDLINE_APPEND="
1882     extra_cflags
1883     extra_objcflags
1884     host_cppflags
1885 "
1886
1887 # code dependency declarations
1888
1889 # architecture extensions
1890
1891 armv5te_deps="arm"
1892 armv6_deps="arm"
1893 armv6t2_deps="arm"
1894 armv8_deps="aarch64"
1895 neon_deps_any="aarch64 arm"
1896 intrinsics_neon_deps="neon"
1897 vfp_deps_any="aarch64 arm"
1898 vfpv3_deps="vfp"
1899
1900 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1901
1902 altivec_deps="ppc"
1903 dcbzl_deps="ppc"
1904 ldbrx_deps="ppc"
1905 ppc4xx_deps="ppc"
1906 vsx_deps="altivec"
1907 power8_deps="vsx"
1908
1909 loongson_deps="mips"
1910 mips32r1_deps="mips32"
1911 mips32r2_deps="mips32"
1912 mips32r6_deps="mips32"
1913 mips64r1_deps="mips64"
1914 mips64r2_deps="mips64"
1915 mips64r6_deps="mips64"
1916
1917 vis_deps="sparc"
1918
1919 cpunop_deps="i686"
1920 x86_64_select="i686"
1921 x86_64_suggest="fast_cmov"
1922
1923 amd3dnow_deps="mmx"
1924 amd3dnowext_deps="amd3dnow"
1925 i686_deps="x86"
1926 mmx_deps="x86"
1927 mmxext_deps="mmx"
1928 sse_deps="mmxext"
1929 sse2_deps="sse"
1930 sse3_deps="sse2"
1931 ssse3_deps="sse3"
1932 sse4_deps="ssse3"
1933 sse42_deps="sse4"
1934 avx_deps="sse42"
1935 xop_deps="avx"
1936 fma3_deps="avx"
1937 fma4_deps="avx"
1938 avx2_deps="avx"
1939
1940 mmx_external_deps="x86asm"
1941 mmx_inline_deps="inline_asm x86"
1942 mmx_suggest="mmx_external mmx_inline"
1943
1944 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1945     eval dep=\$${ext}_deps
1946     eval ${ext}_external_deps='"${dep}_external"'
1947     eval ${ext}_inline_deps='"${dep}_inline"'
1948     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1949 done
1950
1951 aligned_stack_if_any="aarch64 ppc x86"
1952 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1953 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1954 fast_unaligned_if_any="aarch64 ppc x86"
1955 simd_align_16_if_any="altivec neon sse"
1956 simd_align_32_if_any="avx"
1957
1958 # system capabilities
1959 symver_if_any="symver_asm_label symver_gnu_asm"
1960 valgrind_backtrace_conflict="optimizations"
1961 valgrind_backtrace_deps="valgrind_valgrind_h"
1962
1963 # threading support
1964 atomics_gcc_if="sync_val_compare_and_swap"
1965 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1966 atomics_win32_if="MemoryBarrier"
1967 atomics_native_if_any="$ATOMICS_LIST"
1968 w32threads_deps="atomics_native"
1969 threads_if_any="$THREADS_LIST"
1970
1971 # subsystems
1972 cbs_h264_select="cbs golomb"
1973 cbs_h265_select="cbs golomb"
1974 cbs_mpeg2_select="cbs"
1975 dct_select="rdft"
1976 dirac_parse_select="golomb"
1977 error_resilience_select="me_cmp"
1978 faandct_deps="faan"
1979 faandct_select="fdctdsp"
1980 faanidct_deps="faan"
1981 faanidct_select="idctdsp"
1982 h264dsp_select="startcode"
1983 hevc_ps_select="golomb"
1984 intrax8_select="blockdsp idctdsp"
1985 mdct_select="fft"
1986 rdft_select="fft"
1987 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1988 mpeg_er_select="error_resilience"
1989 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1990 mpegaudiodsp_select="dct"
1991 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1992 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1993 vc1dsp_select="h264chroma qpeldsp startcode"
1994
1995 # decoders / encoders
1996 aac_decoder_select="adts_header imdct15 mdct sinewin"
1997 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1998 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1999 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2000 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2001 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2002 adpcm_g722_decoder_select="g722dsp"
2003 adpcm_g722_encoder_select="g722dsp"
2004 aic_decoder_select="golomb idctdsp"
2005 alac_encoder_select="lpc"
2006 als_decoder_select="bswapdsp"
2007 amrnb_decoder_select="lsp"
2008 amrwb_decoder_select="lsp"
2009 amv_decoder_select="sp5x_decoder"
2010 ape_decoder_select="bswapdsp"
2011 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2012 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2013 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2014 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2015 atrac1_decoder_select="mdct sinewin"
2016 atrac3_decoder_select="mdct"
2017 atrac3p_decoder_select="mdct sinewin"
2018 bink_decoder_select="blockdsp hpeldsp"
2019 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2020 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2021 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2022 clearvideo_decoder_select="idctdsp"
2023 cllc_decoder_select="bswapdsp"
2024 comfortnoise_encoder_select="lpc"
2025 cook_decoder_select="audiodsp mdct sinewin"
2026 cscd_decoder_select="lzo"
2027 cscd_decoder_suggest="zlib"
2028 dca_decoder_select="fmtconvert mdct"
2029 dds_decoder_select="texturedsp"
2030 dnxhd_decoder_select="blockdsp idctdsp"
2031 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2032 dvvideo_decoder_select="dvprofile idctdsp"
2033 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2034 dxa_decoder_deps="zlib"
2035 dxv_decoder_select="lzf texturedsp"
2036 eac3_decoder_select="ac3_decoder"
2037 eac3_encoder_select="ac3_encoder"
2038 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2039 eatgq_decoder_select="aandcttables idctdsp"
2040 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2041 exr_decoder_deps="zlib"
2042 ffv1_decoder_select="rangecoder"
2043 ffv1_encoder_select="rangecoder"
2044 ffvhuff_decoder_select="huffyuv_decoder"
2045 ffvhuff_encoder_select="huffyuv_encoder"
2046 fic_decoder_select="golomb"
2047 flac_decoder_select="flacdsp"
2048 flac_encoder_select="bswapdsp flacdsp lpc"
2049 flashsv_decoder_deps="zlib"
2050 flashsv_encoder_deps="zlib"
2051 flashsv2_decoder_deps="zlib"
2052 flv_decoder_select="h263_decoder"
2053 flv_encoder_select="h263_encoder"
2054 fourxm_decoder_select="blockdsp bswapdsp"
2055 fraps_decoder_select="bswapdsp huffman"
2056 g2m_decoder_deps="zlib"
2057 g2m_decoder_select="blockdsp idctdsp jpegtables"
2058 h261_decoder_select="mpeg_er mpegvideo"
2059 h261_encoder_select="aandcttables mpegvideoenc"
2060 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2061 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2062 h263i_decoder_select="h263_decoder"
2063 h263p_encoder_select="h263_encoder"
2064 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2065 h264_decoder_suggest="error_resilience"
2066 hap_decoder_select="snappy texturedsp"
2067 hap_encoder_deps="libsnappy"
2068 hap_encoder_select="texturedspenc"
2069 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2070 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2071 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2072 iac_decoder_select="imc_decoder"
2073 imc_decoder_select="bswapdsp fft mdct sinewin"
2074 indeo3_decoder_select="hpeldsp"
2075 indeo4_decoder_select="ividsp"
2076 indeo5_decoder_select="ividsp"
2077 interplay_video_decoder_select="hpeldsp"
2078 jpegls_decoder_select="mjpeg_decoder"
2079 jv_decoder_select="blockdsp"
2080 lagarith_decoder_select="huffyuvdsp"
2081 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2082 magicyuv_decoder_select="huffyuvdsp"
2083 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2084 metasound_decoder_select="lsp mdct sinewin"
2085 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2086 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2087 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2088 mjpegb_decoder_select="mjpeg_decoder"
2089 mlp_decoder_select="mlp_parser"
2090 motionpixels_decoder_select="bswapdsp"
2091 mp1_decoder_select="mpegaudio"
2092 mp1float_decoder_select="mpegaudio"
2093 mp2_decoder_select="mpegaudio"
2094 mp2float_decoder_select="mpegaudio"
2095 mp3_decoder_select="mpegaudio"
2096 mp3adu_decoder_select="mpegaudio"
2097 mp3adufloat_decoder_select="mpegaudio"
2098 mp3float_decoder_select="mpegaudio"
2099 mp3on4_decoder_select="mpegaudio"
2100 mp3on4float_decoder_select="mpegaudio"
2101 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2102 mpc8_decoder_select="mpegaudiodsp"
2103 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2104 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2105 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2106 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2107 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2108 mpeg4_encoder_select="h263_encoder"
2109 msa1_decoder_select="mss34dsp"
2110 msmpeg4v1_decoder_select="h263_decoder"
2111 msmpeg4v2_decoder_select="h263_decoder"
2112 msmpeg4v2_encoder_select="h263_encoder"
2113 msmpeg4v3_decoder_select="h263_decoder"
2114 msmpeg4v3_encoder_select="h263_encoder"
2115 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2116 mts2_decoder_select="mss34dsp"
2117 mxpeg_decoder_select="mjpeg_decoder"
2118 nellymoser_decoder_select="mdct sinewin"
2119 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2120 nuv_decoder_select="idctdsp lzo"
2121 on2avc_decoder_select="mdct"
2122 opus_decoder_deps="avresample"
2123 opus_decoder_select="imdct15"
2124 png_decoder_deps="zlib"
2125 png_encoder_deps="zlib"
2126 png_encoder_select="huffyuvencdsp"
2127 prores_decoder_select="idctdsp"
2128 prores_encoder_select="fdctdsp"
2129 qcelp_decoder_select="lsp"
2130 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2131 ra_144_encoder_select="audio_frame_queue lpc"
2132 ralf_decoder_select="golomb"
2133 rscc_decoder_deps="zlib"
2134 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2135 rv10_encoder_select="h263_encoder"
2136 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2137 rv20_encoder_select="h263_encoder"
2138 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2139 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2140 screenpresso_decoder_deps="zlib"
2141 sipr_decoder_select="lsp"
2142 sp5x_decoder_select="mjpeg_decoder"
2143 svq1_decoder_select="hpeldsp"
2144 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2145 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2146 svq3_decoder_suggest="zlib"
2147 tak_decoder_select="audiodsp"
2148 tdsc_decoder_deps="zlib"
2149 tdsc_decoder_select="mjpeg_decoder"
2150 theora_decoder_select="vp3_decoder"
2151 thp_decoder_select="mjpeg_decoder"
2152 tiff_decoder_suggest="zlib"
2153 tiff_encoder_suggest="zlib"
2154 truehd_decoder_select="mlp_decoder"
2155 truemotion2_decoder_select="bswapdsp"
2156 truespeech_decoder_select="bswapdsp"
2157 tscc_decoder_deps="zlib"
2158 txd_decoder_select="texturedsp"
2159 twinvq_decoder_select="mdct lsp sinewin"
2160 utvideo_decoder_select="bswapdsp huffyuvdsp"
2161 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2162 vble_decoder_select="huffyuvdsp"
2163 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2164 vc1image_decoder_select="vc1_decoder"
2165 vorbis_decoder_select="mdct"
2166 vorbis_encoder_select="mdct"
2167 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2168 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2169 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2170 vp6a_decoder_select="vp6_decoder"
2171 vp6f_decoder_select="vp6_decoder"
2172 vp7_decoder_select="h264pred videodsp vp8dsp"
2173 vp8_decoder_select="h264pred videodsp vp8dsp"
2174 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2175 webp_decoder_select="vp8_decoder"
2176 wmapro_decoder_select="mdct sinewin wma_freqs"
2177 wmav1_decoder_select="mdct sinewin wma_freqs"
2178 wmav1_encoder_select="mdct sinewin wma_freqs"
2179 wmav2_decoder_select="mdct sinewin wma_freqs"
2180 wmav2_encoder_select="mdct sinewin wma_freqs"
2181 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2182 wmv1_decoder_select="h263_decoder"
2183 wmv1_encoder_select="h263_encoder"
2184 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2185 wmv2_encoder_select="h263_encoder wmv2dsp"
2186 wmv3_decoder_select="vc1_decoder"
2187 wmv3image_decoder_select="wmv3_decoder"
2188 zerocodec_decoder_deps="zlib"
2189 zlib_decoder_deps="zlib"
2190 zlib_encoder_deps="zlib"
2191 zmbv_decoder_deps="zlib"
2192 zmbv_encoder_deps="zlib"
2193
2194 # hardware accelerators
2195 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2196 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2197 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2198 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2199
2200 h263_vaapi_hwaccel_deps="vaapi"
2201 h263_vaapi_hwaccel_select="h263_decoder"
2202 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2203 h264_cuvid_hwaccel_select="h264_decoder"
2204 h264_d3d11va_hwaccel_deps="d3d11va"
2205 h264_d3d11va_hwaccel_select="h264_decoder"
2206 h264_d3d11va2_hwaccel_deps="d3d11va"
2207 h264_d3d11va2_hwaccel_select="h264_decoder"
2208 h264_dxva2_hwaccel_deps="dxva2"
2209 h264_dxva2_hwaccel_select="h264_decoder"
2210 h264_mmal_hwaccel_deps="mmal"
2211 h264_qsv_hwaccel_deps="libmfx"
2212 h264_vaapi_hwaccel_deps="vaapi"
2213 h264_vaapi_hwaccel_select="h264_decoder"
2214 h264_vda_hwaccel_deps="vda"
2215 h264_vda_hwaccel_select="h264_decoder"
2216 h264_vda_old_hwaccel_deps="vda"
2217 h264_vda_old_hwaccel_select="h264_decoder"
2218 h264_vdpau_hwaccel_deps="vdpau"
2219 h264_vdpau_hwaccel_select="h264_decoder"
2220 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2221 hevc_cuvid_hwaccel_select="hevc_decoder"
2222 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2223 hevc_d3d11va_hwaccel_select="hevc_decoder"
2224 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2225 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2226 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2227 hevc_dxva2_hwaccel_select="hevc_decoder"
2228 hevc_qsv_hwaccel_deps="libmfx"
2229 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2230 hevc_vaapi_hwaccel_select="hevc_decoder"
2231 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2232 hevc_vdpau_hwaccel_select="hevc_decoder"
2233 mpeg1_vdpau_hwaccel_deps="vdpau"
2234 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2235 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2236 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2237 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2238 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2239 mpeg2_dxva2_hwaccel_deps="dxva2"
2240 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2241 mpeg2_mmal_hwaccel_deps="mmal"
2242 mpeg2_qsv_hwaccel_deps="libmfx"
2243 mpeg2_vaapi_hwaccel_deps="vaapi"
2244 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2245 mpeg2_vdpau_hwaccel_deps="vdpau"
2246 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2247 mpeg4_vaapi_hwaccel_deps="vaapi"
2248 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2249 mpeg4_vdpau_hwaccel_deps="vdpau"
2250 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2251 vc1_d3d11va_hwaccel_deps="d3d11va"
2252 vc1_d3d11va_hwaccel_select="vc1_decoder"
2253 vc1_d3d11va2_hwaccel_deps="d3d11va"
2254 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2255 vc1_dxva2_hwaccel_deps="dxva2"
2256 vc1_dxva2_hwaccel_select="vc1_decoder"
2257 vc1_mmal_hwaccel_deps="mmal"
2258 vc1_qsv_hwaccel_deps="libmfx"
2259 vc1_vaapi_hwaccel_deps="vaapi"
2260 vc1_vaapi_hwaccel_select="vc1_decoder"
2261 vc1_vdpau_hwaccel_deps="vdpau"
2262 vc1_vdpau_hwaccel_select="vc1_decoder"
2263 vp8_qsv_hwaccel_deps="libmfx"
2264 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2265 vp8_vaapi_hwaccel_select="vp8_decoder"
2266 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2267 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2268 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2269 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2270 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2271
2272 # hardware-accelerated codecs
2273 nvenc_deps_any="libdl LoadLibrary"
2274 omx_deps="libdl pthreads"
2275 omx_rpi_select="omx"
2276 qsv_deps="libmfx"
2277 qsvdec_select="qsv"
2278 qsvenc_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="hevc_ps 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="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="hevc_ps"
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 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2333
2334 # external libraries
2335 avisynth_deps="LoadLibrary"
2336 avxsynth_deps="libdl"
2337 avisynth_demuxer_deps_any="avisynth avxsynth"
2338 avisynth_demuxer_select="riffdec"
2339 libdcadec_decoder_deps="libdcadec"
2340 libfaac_encoder_deps="libfaac"
2341 libfaac_encoder_select="audio_frame_queue"
2342 libfdk_aac_decoder_deps="libfdk_aac"
2343 libfdk_aac_encoder_deps="libfdk_aac"
2344 libfdk_aac_encoder_select="audio_frame_queue"
2345 libgsm_decoder_deps="libgsm"
2346 libgsm_encoder_deps="libgsm"
2347 libgsm_ms_decoder_deps="libgsm"
2348 libgsm_ms_encoder_deps="libgsm"
2349 libilbc_decoder_deps="libilbc"
2350 libilbc_encoder_deps="libilbc"
2351 libkvazaar_encoder_deps="libkvazaar"
2352 libmp3lame_encoder_deps="libmp3lame"
2353 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2354 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2355 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2356 libopencore_amrnb_encoder_select="audio_frame_queue"
2357 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2358 libopenh264_decoder_deps="libopenh264"
2359 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2360 libopenh264_encoder_deps="libopenh264"
2361 libopenjpeg_decoder_deps="libopenjpeg"
2362 libopenjpeg_encoder_deps="libopenjpeg"
2363 libopus_decoder_deps="libopus"
2364 libopus_encoder_deps="libopus"
2365 libopus_encoder_select="audio_frame_queue"
2366 libschroedinger_decoder_deps="libschroedinger"
2367 libschroedinger_encoder_deps="libschroedinger"
2368 libspeex_decoder_deps="libspeex"
2369 libspeex_encoder_deps="libspeex"
2370 libspeex_encoder_select="audio_frame_queue"
2371 libtheora_encoder_deps="libtheora"
2372 libtwolame_encoder_deps="libtwolame"
2373 libvo_aacenc_encoder_deps="libvo_aacenc"
2374 libvo_aacenc_encoder_select="audio_frame_queue"
2375 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2376 libvorbis_encoder_deps="libvorbis"
2377 libvorbis_encoder_select="audio_frame_queue"
2378 libvpx_vp8_decoder_deps="libvpx"
2379 libvpx_vp8_encoder_deps="libvpx"
2380 libvpx_vp9_decoder_deps="libvpx"
2381 libvpx_vp9_encoder_deps="libvpx"
2382 libwavpack_encoder_deps="libwavpack"
2383 libwavpack_encoder_select="audio_frame_queue"
2384 libwebp_encoder_deps="libwebp"
2385 libx262_encoder_deps="libx262"
2386 libx264_encoder_deps="libx264"
2387 libx265_encoder_deps="libx265"
2388 libxavs_encoder_deps="libxavs"
2389 libxvid_encoder_deps="libxvid mkstemp"
2390
2391 # demuxers / muxers
2392 ac3_demuxer_select="ac3_parser"
2393 asf_demuxer_select="riffdec"
2394 asf_muxer_select="riffenc"
2395 asf_stream_muxer_select="asf_muxer"
2396 avi_demuxer_select="iso_media riffdec"
2397 avi_muxer_select="riffenc"
2398 caf_demuxer_select="iso_media riffdec"
2399 dash_muxer_select="mp4_muxer"
2400 dirac_demuxer_select="dirac_parser"
2401 dv_demuxer_select="dvprofile"
2402 dv_muxer_select="dvprofile"
2403 dxa_demuxer_select="riffdec"
2404 eac3_demuxer_select="ac3_parser"
2405 f4v_muxer_select="mov_muxer"
2406 flac_demuxer_select="flac_parser"
2407 hds_muxer_select="flv_muxer"
2408 hls_muxer_select="mpegts_muxer"
2409 ipod_muxer_select="mov_muxer"
2410 ismv_muxer_select="mov_muxer"
2411 matroska_audio_muxer_select="matroska_muxer"
2412 matroska_demuxer_select="iso_media riffdec"
2413 matroska_demuxer_suggest="bzlib lzo zlib"
2414 matroska_muxer_select="iso_media riffenc"
2415 mmf_muxer_select="riffenc"
2416 mov_demuxer_select="iso_media riffdec"
2417 mov_demuxer_suggest="zlib"
2418 mov_muxer_select="iso_media riffenc rtpenc_chain"
2419 mp3_demuxer_select="mpegaudio_parser"
2420 mp3_muxer_select="mpegaudioheader"
2421 mp4_muxer_select="mov_muxer"
2422 mpegts_demuxer_select="iso_media"
2423 mpegts_muxer_select="adts_muxer latm_muxer"
2424 mpegtsraw_demuxer_select="mpegts_demuxer"
2425 mxf_d10_muxer_select="mxf_muxer"
2426 nut_muxer_select="riffenc"
2427 nuv_demuxer_select="riffdec"
2428 oga_muxer_select="ogg_muxer"
2429 ogg_demuxer_select="dirac_parse"
2430 opus_muxer_select="ogg_muxer"
2431 psp_muxer_select="mov_muxer"
2432 rtp_demuxer_select="sdp_demuxer"
2433 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2434 rtsp_demuxer_select="http_protocol rtpdec"
2435 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2436 sap_demuxer_select="sdp_demuxer"
2437 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2438 sdp_demuxer_select="rtpdec"
2439 smoothstreaming_muxer_select="ismv_muxer"
2440 spdif_demuxer_select="adts_header"
2441 spdif_muxer_select="adts_header"
2442 spx_muxer_select="ogg_muxer"
2443 swf_demuxer_suggest="zlib"
2444 tak_demuxer_select="tak_parser"
2445 tg2_muxer_select="mov_muxer"
2446 tgp_muxer_select="mov_muxer"
2447 w64_demuxer_select="wav_demuxer"
2448 wav_demuxer_select="riffdec"
2449 wav_muxer_select="riffenc"
2450 webm_muxer_select="iso_media riffenc"
2451 wtv_demuxer_select="mpegts_demuxer riffdec"
2452 xmv_demuxer_select="riffdec"
2453 xwma_demuxer_select="riffdec"
2454
2455 # indevs / outdevs
2456 alsa_indev_deps="alsa"
2457 alsa_outdev_deps="alsa"
2458 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2459 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2460 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2461 dv1394_indev_deps="dv1394"
2462 dv1394_indev_select="dv_demuxer"
2463 fbdev_indev_deps="linux_fb_h"
2464 jack_indev_deps="libjack"
2465 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2466 libcdio_indev_deps="libcdio"
2467 libdc1394_indev_deps="libdc1394"
2468 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2469 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2470 pulse_indev_deps="libpulse"
2471 sndio_indev_deps="sndio"
2472 sndio_outdev_deps="sndio"
2473 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2474 vfwcap_indev_deps="vfw32 vfwcap_defines"
2475 xcbgrab_indev_deps="libxcb libxcb_shape"
2476 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2477
2478 # protocols
2479 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2480 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2481 ffrtmpcrypt_protocol_select="tcp_protocol"
2482 ffrtmphttp_protocol_conflict="librtmp_protocol"
2483 ffrtmphttp_protocol_select="http_protocol"
2484 gopher_protocol_select="network"
2485 http_protocol_select="tcp_protocol"
2486 http_protocol_suggest="zlib"
2487 httpproxy_protocol_select="tcp_protocol"
2488 httpproxy_protocol_suggest="zlib"
2489 https_protocol_select="tls_protocol"
2490 https_protocol_suggest="zlib"
2491 icecast_protocol_select="http_protocol"
2492 librtmp_protocol_deps="librtmp"
2493 librtmpe_protocol_deps="librtmp"
2494 librtmps_protocol_deps="librtmp"
2495 librtmpt_protocol_deps="librtmp"
2496 librtmpte_protocol_deps="librtmp"
2497 mmsh_protocol_select="http_protocol"
2498 mmst_protocol_select="network"
2499 rtmp_protocol_conflict="librtmp_protocol"
2500 rtmp_protocol_select="tcp_protocol"
2501 rtmp_protocol_suggest="zlib"
2502 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2503 rtmpe_protocol_suggest="zlib"
2504 rtmps_protocol_conflict="librtmp_protocol"
2505 rtmps_protocol_select="tls_protocol"
2506 rtmps_protocol_suggest="zlib"
2507 rtmpt_protocol_select="ffrtmphttp_protocol"
2508 rtmpt_protocol_suggest="zlib"
2509 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2510 rtmpte_protocol_suggest="zlib"
2511 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2512 rtmpts_protocol_suggest="zlib"
2513 rtp_protocol_select="udp_protocol"
2514 sctp_protocol_deps="struct_sctp_event_subscribe"
2515 sctp_protocol_select="network"
2516 srtp_protocol_select="rtp_protocol srtp"
2517 tcp_protocol_select="network"
2518 tls_protocol_deps_any="gnutls openssl"
2519 tls_protocol_select="tcp_protocol"
2520 udp_protocol_select="network"
2521 unix_protocol_deps="sys_un_h"
2522 unix_protocol_select="network"
2523
2524 # filters
2525 asyncts_filter_deps="avresample"
2526 blackframe_filter_deps="gpl"
2527 boxblur_filter_deps="gpl"
2528 bs2b_filter_deps="libbs2b"
2529 cropdetect_filter_deps="gpl"
2530 deinterlace_qsv_filter_deps="libmfx"
2531 deinterlace_vaapi_filter_deps="vaapi"
2532 delogo_filter_deps="gpl"
2533 drawtext_filter_deps="libfreetype"
2534 drawtext_filter_suggest="libfontconfig"
2535 frei0r_filter_deps="frei0r libdl"
2536 frei0r_src_filter_deps="frei0r libdl"
2537 hdcd_filter_deps="libhdcd"
2538 hqdn3d_filter_deps="gpl"
2539 interlace_filter_deps="gpl"
2540 movie_filter_deps="avcodec avformat"
2541 ocv_filter_deps="libopencv"
2542 resample_filter_deps="avresample"
2543 scale_filter_deps="swscale"
2544 scale_qsv_filter_deps="libmfx"
2545 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2546
2547 # examples
2548 decode_audio_example_deps="avcodec avutil"
2549 decode_video_example_deps="avcodec avutil"
2550 encode_audio_example_deps="avcodec avutil"
2551 encode_video_example_deps="avcodec avutil"
2552 filter_audio_example_deps="avfilter avutil"
2553 metadata_example_deps="avformat avutil"
2554 output_example_deps="avcodec avformat avresample avutil swscale"
2555 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2556 transcode_aac_example_deps="avcodec avformat avresample"
2557
2558 # EXTRALIBS_LIST
2559 cpu_init_extralibs="pthreads_extralibs"
2560 cws2fws_extralibs="zlib_extralibs"
2561
2562 # libraries, in linking order
2563 avcodec_deps="avutil"
2564 avcodec_select="null_bsf"
2565 avdevice_deps="avformat avcodec avutil"
2566 avfilter_deps="avutil"
2567 avformat_deps="avcodec avutil"
2568 avformat_suggest="network"
2569 avresample_deps="avutil"
2570 swscale_deps="avutil"
2571
2572 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2573 avdevice_extralibs="libm_extralibs"
2574 avformat_extralibs="libm_extralibs"
2575 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2576 avresample_extralibs="libm_extralibs"
2577 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2578 swscale_extralibs="libm_extralibs"
2579
2580 # programs
2581 avconv_deps="avcodec avfilter avformat avresample swscale"
2582 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2583                fps_filter null_filter resample_filter scale_filter
2584                trim_filter"
2585 avconv_suggest="psapi shell32"
2586 avplay_deps="avcodec avfilter avformat avresample sdl"
2587 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2588 avplay_suggest="shell32"
2589 avprobe_deps="avcodec avformat"
2590 avprobe_suggest="shell32"
2591
2592 # documentation
2593 pod2man_deps="doc"
2594 texi2html_deps="doc"
2595
2596 # default parameters
2597
2598 logfile="avbuild/config.log"
2599
2600 # installation paths
2601 prefix_default="/usr/local"
2602 bindir_default='${prefix}/bin'
2603 datadir_default='${prefix}/share/avconv'
2604 docdir_default='${prefix}/share/doc/libav'
2605 incdir_default='${prefix}/include'
2606 libdir_default='${prefix}/lib'
2607 mandir_default='${prefix}/share/man'
2608 shlibdir_default="$libdir_default"
2609
2610 # toolchain
2611 ar_default="ar"
2612 cc_default="gcc"
2613 host_cc_default="gcc"
2614 x86asmexe_default="nasm"
2615 ln_s="ln -s -f"
2616 nm_default="nm -g"
2617 pkg_config_default=pkg-config
2618 ranlib="ranlib"
2619 strip="strip"
2620 version_script='--version-script'
2621
2622 # machine
2623 arch_default=$(uname -m)
2624 cpu="generic"
2625 intrinsics="none"
2626
2627 # OS
2628 target_os_default=$(tolower $(uname -s))
2629 host_os=$target_os_default
2630
2631 # configurable options
2632 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2633
2634 enable asm
2635 enable debug
2636 enable doc
2637 enable faan faandct faanidct
2638 enable optimizations
2639 enable safe_bitstream_reader
2640 enable static
2641 enable swscale_alpha
2642 enable valgrind_backtrace
2643
2644 # By default, enable only those hwaccels that have no external dependencies.
2645 enable d3d11va dxva2 vda vdpau
2646
2647 # internal components are enabled by default
2648 enable $EXTRALIBS_LIST
2649
2650 # Avoid external, non-system, libraries getting enabled by dependency resolution
2651 disable $EXTERNAL_LIBRARY_LIST
2652
2653 # build settings
2654 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2655 LIBPREF="lib"
2656 LIBSUF=".a"
2657 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2658 SLIBPREF="lib"
2659 SLIBSUF=".so"
2660 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2661 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2662 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2663 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2664 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2665 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2666 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2667
2668 asflags_filter=echo
2669 cflags_filter=echo
2670 ldflags_filter=echo
2671
2672 AS_C='-c'
2673 AS_O='-o $@'
2674 CC_C='-c'
2675 CC_E='-E -o $@'
2676 CC_O='-o $@'
2677 OBJCC_C='-c'
2678 OBJCC_E='-E -o $@'
2679 OBJCC_O='-o $@'
2680 X86ASM_O='-o $@'
2681 LD_O='-o $@'
2682 LD_LIB='-l%'
2683 LD_PATH='-L'
2684 HOSTCC_C='-c'
2685 HOSTCC_E='-E -o $@'
2686 HOSTCC_O='-o $@'
2687 HOSTLD_O='-o $@'
2688
2689 host_extralibs='-lm'
2690 host_cflags_filter=echo
2691 host_ldflags_filter=echo
2692
2693 target_path='$(CURDIR)'
2694
2695 # since the object filename is not given with the -MM flag, the compiler
2696 # is only able to print the basename, and we must add the path ourselves
2697 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2698 DEPFLAGS='-MM'
2699
2700 mkdir -p avbuild
2701
2702 # find source path
2703 if test -f configure; then
2704     source_path=.
2705 else
2706     source_path=$(cd $(dirname "$0"); pwd)
2707     echo "$source_path" | grep -q '[[:blank:]]' &&
2708         die "Out of tree builds are impossible with whitespace in source path."
2709     test -e "$source_path/config.h" &&
2710         die "Out of tree builds are impossible with config.h in source dir."
2711 fi
2712
2713 for v in "$@"; do
2714     r=${v#*=}
2715     l=${v%"$r"}
2716     r=$(sh_quote "$r")
2717     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2718 done
2719
2720 find_things(){
2721     thing=$1
2722     pattern=$2
2723     file=$source_path/$3
2724     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2725 }
2726
2727 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2728 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2729 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2730 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2731 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2732 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2733 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2734 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2735 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2736
2737 find_things_extern(){
2738     thing=$1
2739     pattern=$2
2740     file=$source_path/$3
2741     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2742 }
2743
2744 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2745 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2746
2747 AVCODEC_COMPONENTS_LIST="
2748     $BSF_LIST
2749     $DECODER_LIST
2750     $ENCODER_LIST
2751     $HWACCEL_LIST
2752     $PARSER_LIST
2753 "
2754
2755 AVDEVICE_COMPONENTS_LIST="
2756     $INDEV_LIST
2757     $OUTDEV_LIST
2758 "
2759
2760 AVFILTER_COMPONENTS_LIST="
2761     $FILTER_LIST
2762 "
2763
2764 AVFORMAT_COMPONENTS_LIST="
2765     $DEMUXER_LIST
2766     $MUXER_LIST
2767     $PROTOCOL_LIST
2768 "
2769
2770 ALL_COMPONENTS="
2771     $AVCODEC_COMPONENTS_LIST
2772     $AVDEVICE_COMPONENTS_LIST
2773     $AVFILTER_COMPONENTS_LIST
2774     $AVFORMAT_COMPONENTS_LIST
2775 "
2776
2777 for n in $COMPONENT_LIST; do
2778     v=$(toupper ${n%s})_LIST
2779     eval enable \$$v
2780     eval ${n}_if_any="\$$v"
2781 done
2782
2783 enable $ARCH_EXT_LIST
2784
2785 die_unknown(){
2786     echo "Unknown option \"$1\"."
2787     echo "See $0 --help for available options."
2788     exit 1
2789 }
2790
2791 print_3_columns() {
2792     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2793 }
2794
2795 show_list() {
2796     suffix=_$1
2797     shift
2798     echo $* | sed s/$suffix//g | print_3_columns
2799     exit 0
2800 }
2801
2802 rand_list(){
2803     IFS=', '
2804     set -- $*
2805     unset IFS
2806     for thing; do
2807         comp=${thing%:*}
2808         prob=${thing#$comp}
2809         prob=${prob#:}
2810         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2811         echo "prob ${prob:-0.5}"
2812         printf '%s\n' $comp
2813     done
2814 }
2815
2816 do_random(){
2817     action=$1
2818     shift
2819     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2820     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2821 }
2822
2823 for opt do
2824     optval="${opt#*=}"
2825     case "$opt" in
2826         --extra-ldflags=*)
2827             add_ldflags $optval
2828         ;;
2829         --extra-ldexeflags=*)
2830             add_ldexeflags $optval
2831         ;;
2832         --extra-ldsoflags=*)
2833             add_ldsoflags $optval
2834         ;;
2835         --extra-libs=*)
2836             add_extralibs $optval
2837         ;;
2838         --disable-devices)
2839             disable $INDEV_LIST $OUTDEV_LIST
2840         ;;
2841         --enable-debug=*)
2842             debuglevel="$optval"
2843         ;;
2844         --disable-programs)
2845             disable $PROGRAM_LIST
2846         ;;
2847         --disable-everything)
2848             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2849         ;;
2850         --disable-all)
2851             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2852             disable $LIBRARY_LIST $PROGRAM_LIST doc
2853         ;;
2854         --enable-random|--disable-random)
2855             action=${opt%%-random}
2856             do_random ${action#--} $COMPONENT_LIST
2857         ;;
2858         --enable-random=*|--disable-random=*)
2859             action=${opt%%-random=*}
2860             do_random ${action#--} $optval
2861         ;;
2862         --enable-*=*|--disable-*=*)
2863             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2864             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2865             eval list=\$$(toupper $thing)_LIST
2866             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2867             $action $(filter "$name" $list)
2868         ;;
2869         --enable-avserver|--disable-avserver*)
2870             warn "avserver has been removed, the ${opt} option is only"\
2871                  "provided for compatibility and will be removed in the future"
2872         ;;
2873         --enable-yasm|--disable-yasm)
2874             warn "The ${opt} option is only provided for compatibility and will be\n"\
2875                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2876             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2877         ;;
2878         --enable-?*|--disable-?*)
2879             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2880             if is_in $option $COMPONENT_LIST; then
2881                 test $action = disable && action=unset
2882                 eval $action \$$(toupper ${option%s})_LIST
2883             elif is_in $option $CMDLINE_SELECT; then
2884                 $action $option
2885             else
2886                 die_unknown $opt
2887             fi
2888         ;;
2889         --list-*)
2890             NAME="${opt#--list-}"
2891             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2892             NAME=${NAME%s}
2893             eval show_list $NAME \$$(toupper $NAME)_LIST
2894         ;;
2895         --help|-h) show_help
2896         ;;
2897         --quiet|-q) quiet=yes
2898         ;;
2899         *)
2900             optname="${opt%%=*}"
2901             optname="${optname#--}"
2902             optname=$(echo "$optname" | sed 's/-/_/g')
2903             if is_in $optname $CMDLINE_SET; then
2904                 eval $optname='$optval'
2905             elif is_in $optname $CMDLINE_APPEND; then
2906                 append $optname "$optval"
2907             else
2908                 die_unknown $opt
2909             fi
2910         ;;
2911     esac
2912 done
2913
2914 for e in $env; do
2915     eval "export $e"
2916 done
2917
2918 disabled logging && logfile=/dev/null
2919
2920 # Die early if licensing-related configure options are incompatible.
2921 die_license_disabled() {
2922     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2923 }
2924
2925 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2926 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2927 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2928
2929 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2930
2931 enabled_all gnutls openssl &&
2932     die "GnuTLS and OpenSSL must not be enabled at the same time."
2933
2934 # Disable all the library-specific components if the library itself
2935 # is disabled, see AVCODEC_LIST and following _LIST variables.
2936
2937 disable_components(){
2938     disabled ${1} && disable $(
2939         eval components="\$$(toupper ${1})_COMPONENTS"
2940         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2941     )
2942 }
2943
2944 map 'disable_components $v' $LIBRARY_LIST
2945
2946 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2947 set >> $logfile
2948
2949 case "$toolchain" in
2950     *-asan)
2951         cc_default="${toolchain%-asan}"
2952         add_cflags  -fsanitize=address
2953         add_ldflags -fsanitize=address
2954     ;;
2955     *-msan)
2956         cc_default="${toolchain%-msan}"
2957         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2958         add_ldflags -fsanitize=memory
2959     ;;
2960     *-tsan)
2961         cc_default="${toolchain%-tsan}"
2962         add_cflags  -fsanitize=thread -fPIE
2963         add_ldflags -fsanitize=thread -pie
2964         case "$toolchain" in
2965             gcc-tsan)
2966                 add_cflags  -fPIC
2967                 add_ldflags -fPIC
2968                 ;;
2969         esac
2970     ;;
2971     *-usan)
2972         cc_default="${toolchain%-usan}"
2973         add_cflags  -fsanitize=undefined
2974         add_ldflags -fsanitize=undefined
2975         case "$toolchain" in
2976             clang-usan)
2977                 add_cflags -O1
2978                 ;;
2979         esac
2980     ;;
2981     valgrind-*)
2982         target_exec_default="valgrind"
2983         case "$toolchain" in
2984             valgrind-massif)
2985                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2986                 ;;
2987             valgrind-memcheck)
2988                 target_exec_args="--track-origins=yes --leak-check=full"
2989                 ;;
2990         esac
2991     ;;
2992     msvc)
2993         # Check whether the current MSVC version needs the C99 converter.
2994         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2995         # support enough of C99 to build libav. Default to the new
2996         # behaviour if the regexp was unable to match anything, since this
2997         # successfully parses the version number of existing supported
2998         # versions that require the converter (MSVC 2010 and 2012).
2999         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3000         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3001             cc_default="cl"
3002         else
3003             cc_default="c99wrap cl"
3004         fi
3005         ld_default="$source_path/compat/windows/mslink"
3006         nm_default="dumpbin -symbols"
3007         ar_default="lib"
3008         case "$arch" in
3009         arm*)
3010             as_default="armasm"
3011             ;;
3012         esac
3013         target_os_default="win32"
3014         # Use a relative path for TMPDIR. This makes sure all the
3015         # ffconf temp files are written with a relative path, avoiding
3016         # issues with msys/win32 path conversion for MSVC parameters
3017         # such as -Fo<file> or -out:<file>.
3018         TMPDIR=.
3019     ;;
3020     icl)
3021         cc_default="icl"
3022         ld_default="xilink"
3023         nm_default="dumpbin -symbols"
3024         ar_default="xilib"
3025         target_os_default="win32"
3026         TMPDIR=.
3027     ;;
3028     gcov)
3029         add_cflags  -fprofile-arcs -ftest-coverage
3030         add_ldflags -fprofile-arcs -ftest-coverage
3031     ;;
3032     llvm-cov)
3033         add_cflags -fprofile-arcs -ftest-coverage
3034         add_ldflags --coverage
3035     ;;
3036     hardened)
3037         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3038         add_cflags   -fno-strict-overflow -fstack-protector-all
3039         add_ldflags  -Wl,-z,relro -Wl,-z,now
3040     ;;
3041     ?*)
3042         die "Unknown toolchain $toolchain"
3043     ;;
3044 esac
3045
3046 test -n "$cross_prefix" && enable cross_compile
3047
3048 if enabled cross_compile; then
3049     test -n "$arch" && test -n "$target_os" ||
3050         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3051 fi
3052
3053 ar_default="${cross_prefix}${ar_default}"
3054 cc_default="${cross_prefix}${cc_default}"
3055 objcc_default="${cross_prefix}${objcc_default}"
3056 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3057 nm_default="${cross_prefix}${nm_default}"
3058 pkg_config_default="${cross_prefix}${pkg_config_default}"
3059 ranlib="${cross_prefix}${ranlib}"
3060 strip="${cross_prefix}${strip}"
3061
3062 sysinclude_default="${sysroot}/usr/include"
3063
3064 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3065 enabled cross_compile || host_cc_default=$cc
3066 set_default host_cc
3067
3068 if ! $pkg_config --version >/dev/null 2>&1; then
3069     warn "$pkg_config not found, library detection may fail."
3070     pkg_config=false
3071 fi
3072
3073 exesuf() {
3074     case $1 in
3075         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3076     esac
3077 }
3078
3079 EXESUF=$(exesuf $target_os)
3080 HOSTEXESUF=$(exesuf $host_os)
3081
3082 # set temporary file name
3083 : ${TMPDIR:=$TEMPDIR}
3084 : ${TMPDIR:=$TMP}
3085 : ${TMPDIR:=/tmp}
3086
3087 if ! check_cmd mktemp -u XXXXXX; then
3088     # simple replacement for missing mktemp
3089     # NOT SAFE FOR GENERAL USE
3090     mktemp(){
3091         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3092         echo "$tmpname"
3093         mkdir "$tmpname"
3094     }
3095 fi
3096
3097 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3098     die "Unable to create temporary directory in $TMPDIR."
3099
3100 tmpfile(){
3101     tmp="${AVTMPDIR}/test"$2
3102     (set -C; exec > $tmp) 2> /dev/null ||
3103         die "Unable to create temporary file in $AVTMPDIR."
3104     eval $1=$tmp
3105 }
3106
3107 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3108 trap 'exit 2' INT
3109
3110 tmpfile TMPASM .asm
3111 tmpfile TMPC   .c
3112 tmpfile TMPE   $EXESUF
3113 tmpfile TMPH   .h
3114 tmpfile TMPO   .o
3115 tmpfile TMPS   .S
3116 tmpfile TMPSH  .sh
3117 tmpfile TMPV   .ver
3118
3119 unset -f mktemp
3120
3121 chmod +x $TMPE
3122
3123 # make sure we can execute files in $TMPDIR
3124 cat > $TMPSH 2>> $logfile <<EOF
3125 #! /bin/sh
3126 EOF
3127 chmod +x $TMPSH >> $logfile 2>&1
3128 if ! $TMPSH >> $logfile 2>&1; then
3129     cat <<EOF
3130 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3131 variable to another directory and make sure that it is not mounted noexec.
3132 EOF
3133     die "Sanity test failed."
3134 fi
3135
3136 armasm_flags(){
3137     for flag; do
3138         case $flag in
3139             # Filter out MSVC cl.exe options from cflags that shouldn't
3140             # be passed to gas-preprocessor
3141             -M[TD]*)                                            ;;
3142             *)                  echo $flag                      ;;
3143         esac
3144    done
3145 }
3146
3147 ccc_flags(){
3148     for flag; do
3149         case $flag in
3150             -std=c99)           echo -c99                       ;;
3151             -mcpu=*)            echo -arch ${flag#*=}           ;;
3152             -mieee)             echo -ieee                      ;;
3153             -O*|-fast)          echo $flag                      ;;
3154             -fno-math-errno)    echo -assume nomath_errno       ;;
3155             -g)                 echo -g3                        ;;
3156             -Wall)              echo -msg_enable level2         ;;
3157             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3158             -Wl,*)              echo $flag                      ;;
3159             -f*|-W*)                                            ;;
3160             *)                  echo $flag                      ;;
3161         esac
3162    done
3163 }
3164
3165 cparser_flags(){
3166     for flag; do
3167         case $flag in
3168             -Wno-switch)             echo -Wno-switch-enum ;;
3169             -Wno-format-zero-length) ;;
3170             -Wdisabled-optimization) ;;
3171             -Wno-pointer-sign)       echo -Wno-other ;;
3172             *)                       echo $flag ;;
3173         esac
3174     done
3175 }
3176
3177 msvc_common_flags(){
3178     for flag; do
3179         case $flag in
3180             # In addition to specifying certain flags under the compiler
3181             # specific filters, they must be specified here as well or else the
3182             # generic catch all at the bottom will print the original flag.
3183             -Wall)                ;;
3184             -Wextra)              ;;
3185             -std=c99)             ;;
3186             # Common flags
3187             -fomit-frame-pointer) ;;
3188             -g)                   echo -Z7 ;;
3189             -fno-math-errno)      ;;
3190             -fno-common)          ;;
3191             -fno-signed-zeros)    ;;
3192             -fPIC)                ;;
3193             -mthumb)              ;;
3194             -march=*)             ;;
3195             -lz)                  echo zlib.lib ;;
3196             -lx264)               echo libx264.lib ;;
3197             -l*)                  echo ${flag#-l}.lib ;;
3198             -L*)                  echo -libpath:${flag#-L} ;;
3199             *)                    echo $flag ;;
3200         esac
3201     done
3202 }
3203
3204 msvc_flags(){
3205     msvc_common_flags "$@"
3206     for flag; do
3207         case $flag in
3208             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3209                                        -wd4554 ;;
3210             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3211                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3212                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3213                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3214         esac
3215     done
3216 }
3217
3218 icl_flags(){
3219     msvc_common_flags "$@"
3220     for flag; do
3221         case $flag in
3222             # Despite what Intel's documentation says -Wall, which is supported
3223             # on Windows, does enable remarks so disable them here.
3224             -Wall)                echo $flag -Qdiag-disable:remark ;;
3225             -std=c99)             echo -Qstd=c99 ;;
3226         esac
3227     done
3228 }
3229
3230 pgi_flags(){
3231     for flag; do
3232         case $flag in
3233             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3234             -fomit-frame-pointer) echo -Mnoframe ;;
3235             -g)                   echo -gopt ;;
3236             *)                    echo $flag ;;
3237         esac
3238     done
3239 }
3240
3241 suncc_flags(){
3242     for flag; do
3243         case $flag in
3244             -march=*|-mcpu=*)
3245                 case "${flag#*=}" in
3246                     native)                   echo -xtarget=native       ;;
3247                     v9|niagara)               echo -xarch=sparc          ;;
3248                     ultrasparc)               echo -xarch=sparcvis       ;;
3249                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3250                     i586|pentium)             echo -xchip=pentium        ;;
3251                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3252                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3253                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3254                     pentium4*)          echo -xtarget=pentium4           ;;
3255                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3256                     *-sse3)             echo -xarch=sse3                 ;;
3257                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3258                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3259                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3260                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3261                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3262                     k8|opteron|athlon64|athlon-fx)
3263                                                echo -xarch=sse2a         ;;
3264                     athlon*)                   echo -xarch=pentium_proa  ;;
3265                 esac
3266                 ;;
3267             -std=c99)             echo -xc99              ;;
3268             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3269             -fPIC)                echo -KPIC -xcode=pic32 ;;
3270             -W*,*)                echo $flag              ;;
3271             -f*-*|-W*|-mimpure-text)                      ;;
3272             -shared)              echo -G                 ;;
3273             *)                    echo $flag              ;;
3274         esac
3275     done
3276 }
3277
3278 tms470_flags(){
3279     for flag; do
3280         case $flag in
3281             -march=*|-mcpu=*)
3282                 case "${flag#*=}" in
3283                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3284                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3285                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3286                     armv6*|arm11*)          echo -mv=6   ;;
3287                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3288                                             echo -mv=5e  ;;
3289                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3290                 esac
3291                 ;;
3292             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3293             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3294             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3295             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3296             -msoft-float)   echo --float_support=vfplib       ;;
3297             -O[0-3]|-mf=*)  echo $flag                        ;;
3298             -g)             echo -g -mn                       ;;
3299             -pds=*)         echo $flag                        ;;
3300             -D*|-I*)        echo $flag                        ;;
3301             --gcc|--abi=*)  echo $flag                        ;;
3302             -me)            echo $flag                        ;;
3303         esac
3304     done
3305 }
3306
3307 probe_cc(){
3308     pfx=$1
3309     _cc=$2
3310
3311     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3312     unset _ld_o _ldflags _ld_lib _ld_path
3313     unset _depflags _DEPCMD _DEPFLAGS
3314     _flags_filter=echo
3315
3316     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3317         _type=llvm_gcc
3318         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3319         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3320         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3321         _cflags_speed='-O3'
3322         _cflags_size='-Os'
3323     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3324         _type=gcc
3325         gcc_version=$($_cc --version | head -n1)
3326         gcc_basever=$($_cc -dumpversion)
3327         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3328         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3329         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3330         if ! $_cc -dumpversion | grep -q '^2\.'; then
3331             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3332         fi
3333         _cflags_speed='-O3'
3334         _cflags_size='-Os'
3335     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3336         _type=icc
3337         _ident=$($_cc --version | head -n1)
3338         _depflags='-MMD'
3339         _cflags_speed='-O3'
3340         _cflags_size='-Os'
3341         _cflags_noopt='-O1'
3342     elif $_cc -v 2>&1 | grep -q xlc; then
3343         _type=xlc
3344         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3345         _cflags_speed='-O5'
3346         _cflags_size='-O5 -qcompact'
3347     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3348         _type=ccc
3349         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3350         _DEPFLAGS='-M'
3351         _cflags_speed='-fast'
3352         _cflags_size='-O1'
3353         _flags_filter=ccc_flags
3354     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3355         test -d "$sysroot" || die "No valid sysroot specified."
3356         _type=armcc
3357         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3358         armcc_conf="$PWD/armcc.conf"
3359         $_cc --arm_linux_configure                 \
3360              --arm_linux_config_file="$armcc_conf" \
3361              --configure_sysroot="$sysroot"        \
3362              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3363              die "Error creating armcc configuration file."
3364         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3365         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3366         as_default="${cross_prefix}gcc"
3367         _depflags='-MMD'
3368         _cflags_speed='-O3'
3369         _cflags_size='-Os'
3370     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3371         _type=tms470
3372         _ident=$($_cc -version | head -n1 | tr -s ' ')
3373         _flags='--gcc --abi=eabi -me'
3374         _cc_e='-ppl -fe=$@'
3375         _cc_o='-fe=$@'
3376         _depflags='-ppa -ppd=$(@:.o=.d)'
3377         _cflags_speed='-O3 -mf=5'
3378         _cflags_size='-O3 -mf=2'
3379         _flags_filter=tms470_flags
3380     elif $_cc -v 2>&1 | grep -q clang; then
3381         _type=clang
3382         _ident=$($_cc --version 2>/dev/null | head -n1)
3383         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3384         _cflags_speed='-O3'
3385         _cflags_size='-Os'
3386     elif $_cc -V 2>&1 | grep -q Sun; then
3387         _type=suncc
3388         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3389         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3390         _DEPFLAGS='-xM1 -xc99'
3391         _ldflags='-std=c99'
3392         _cflags_speed='-O5'
3393         _cflags_size='-O5 -xspace'
3394         _flags_filter=suncc_flags
3395     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3396         _type=pathscale
3397         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3398         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3399         _cflags_speed='-O2'
3400         _cflags_size='-Os'
3401         _flags_filter='filter_out -Wdisabled-optimization'
3402     elif $_cc -v 2>&1 | grep -q Open64; then
3403         _type=open64
3404         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3405         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3406         _cflags_speed='-O2'
3407         _cflags_size='-Os'
3408         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3409     elif $_cc -V 2>&1 | grep -q Portland; then
3410         _type=pgi
3411         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3412         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3413         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3414         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3415         _cflags_noopt="-O1"
3416         _flags_filter=pgi_flags
3417     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3418         _type=armasm
3419         _ident=$($_cc | head -n1)
3420         # 4509: "This form of conditional instruction is deprecated"
3421         _flags="-nologo -ignore 4509"
3422         _flags_filter=armasm_flags
3423     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3424         _type=msvc
3425         _ident=$($_cc 2>&1 | head -n1)
3426         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3427         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3428         _cflags_speed="-O2"
3429         _cflags_size="-O1"
3430         _cflags_noopt="-O1"
3431         if $_cc -nologo- 2>&1 | grep -q Linker; then
3432             _ld_o='-out:$@'
3433         else
3434             _ld_o='-Fe$@'
3435         fi
3436         _cc_o='-Fo$@'
3437         _cc_e='-P -Fi$@'
3438         _flags_filter=msvc_flags
3439         _ld_lib='lib%.a'
3440         _ld_path='-libpath:'
3441         _flags='-nologo'
3442     elif $_cc 2>&1 | grep -q Intel; then
3443         _type=icl
3444         _ident=$($_cc 2>&1 | head -n1)
3445         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3446         # Not only is O3 broken on 13.x+ but it is slower on all previous
3447         # versions (tested) as well.
3448         _cflags_speed="-O2"
3449         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3450         if $_cc 2>&1 | grep -q Linker; then
3451             _ld_o='-out:$@'
3452         else
3453             _ld_o='-Fe$@'
3454         fi
3455         _cc_o='-Fo$@'
3456         _cc_e='-P'
3457         _flags_filter=icl_flags
3458         _ld_lib='lib%.a'
3459         _ld_path='-libpath:'
3460         # -Qdiag-error to make icl error when seeing certain unknown arguments
3461         _flags='-nologo -Qdiag-error:4044,10157'
3462         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3463         # with MSVC which enables it by default.
3464         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3465     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3466         # lld can emulate multiple different linkers; in ms link.exe mode,
3467         # the -? parameter gives the help output which contains an identifyable
3468         # string, while it gives an error in other modes.
3469         _type=lld-link
3470         # The link.exe mode doesn't have a switch for getting the version,
3471         # but we can force it back to gnu mode and get the version from there.
3472         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3473         _ld_o='-out:$@'
3474         _flags_filter=msvc_flags
3475         _ld_lib='lib%.a'
3476         _ld_path='-libpath:'
3477     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3478         _type=cparser
3479         _ident=$($_cc --version | head -n1)
3480         _depflags='-MMD'
3481         _cflags_speed='-O4'
3482         _cflags_size='-O2'
3483         _flags_filter=cparser_flags
3484     fi
3485
3486     eval ${pfx}_type=\$_type
3487     eval ${pfx}_ident=\$_ident
3488 }
3489
3490 set_ccvars(){
3491     eval ${1}_C=\${_cc_c-\${${1}_C}}
3492     eval ${1}_E=\${_cc_e-\${${1}_E}}
3493     eval ${1}_O=\${_cc_o-\${${1}_O}}
3494
3495     if [ -n "$_depflags" ]; then
3496         eval ${1}_DEPFLAGS=\$_depflags
3497     else
3498         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3499         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3500         eval DEP${1}FLAGS=\$_flags
3501     fi
3502 }
3503
3504 probe_cc cc "$cc"
3505 cflags_filter=$_flags_filter
3506 cflags_speed=$_cflags_speed
3507 cflags_size=$_cflags_size
3508 cflags_noopt=$_cflags_noopt
3509 add_cflags $_flags $_cflags
3510 cc_ldflags=$_ldflags
3511 set_ccvars CC
3512
3513 probe_cc hostcc "$host_cc"
3514 host_cflags_filter=$_flags_filter
3515 host_cflags_speed=$_cflags_speed
3516 add_host_cflags  $_flags $_cflags
3517 set_ccvars HOSTCC
3518
3519 test -n "$cc_type" && enable $cc_type ||
3520     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3521
3522 : ${as_default:=$cc}
3523 : ${objcc_default:=$cc}
3524 : ${dep_cc_default:=$cc}
3525 : ${ld_default:=$cc}
3526 : ${host_ld_default:=$host_cc}
3527 set_default ar as objcc dep_cc ld host_ld
3528
3529 probe_cc as "$as"
3530 asflags_filter=$_flags_filter
3531 add_asflags $_flags $_cflags
3532 set_ccvars AS
3533
3534 probe_cc objcc "$objcc"
3535 objcflags_filter=$_flags_filter
3536 add_objcflags $_flags $_cflags
3537 set_ccvars OBJC
3538
3539 probe_cc ld "$ld"
3540 ldflags_filter=$_flags_filter
3541 add_ldflags $_flags $_ldflags
3542 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3543 LD_O=${_ld_o-$LD_O}
3544 LD_LIB=${_ld_lib-$LD_LIB}
3545 LD_PATH=${_ld_path-$LD_PATH}
3546
3547 probe_cc hostld "$host_ld"
3548 host_ldflags_filter=$_flags_filter
3549 add_host_ldflags $_flags $_ldflags
3550 HOSTLD_O=${_ld_o-$HOSTLD_O}
3551
3552 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3553     probe_cc depcc "$dep_cc"
3554     CCDEP=${_DEPCMD:-$DEPCMD}
3555     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3556     DEPCCFLAGS=$_flags
3557 fi
3558
3559 if $ar 2>&1 | grep -q Microsoft; then
3560     arflags="-nologo"
3561     ar_o='-out:$@'
3562 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3563     arflags="rq"
3564     ar_o='$@'
3565 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3566     arflags='-Xany -r -c'
3567     ar_o='$@'
3568 else
3569     arflags="rc"
3570     ar_o='$@'
3571 fi
3572
3573 add_cflags $extra_cflags
3574 add_objcflags $extra_objcflags
3575 add_asflags $extra_cflags
3576
3577 if test -n "$sysroot"; then
3578     case "$cc_type" in
3579         gcc|llvm_gcc|clang)
3580             add_cppflags --sysroot="$sysroot"
3581             add_ldflags --sysroot="$sysroot"
3582         ;;
3583         tms470)
3584             add_cppflags -I"$sysinclude"
3585             add_ldflags  --sysroot="$sysroot"
3586         ;;
3587     esac
3588 fi
3589
3590 if test "$cpu" = host; then
3591     enabled cross_compile &&
3592         die "--cpu=host makes no sense when cross-compiling."
3593
3594     case "$cc_type" in
3595         gcc|llvm_gcc)
3596             check_native(){
3597                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3598                 sed -n "/cc1.*$1=/{
3599                             s/.*$1=\\([^ ]*\\).*/\\1/
3600                             p
3601                             q
3602                         }" $TMPE
3603             }
3604             cpu=$(check_native -march || check_native -mcpu)
3605         ;;
3606     esac
3607
3608     test "${cpu:-host}" = host &&
3609         die "--cpu=host not supported with compiler $cc"
3610 fi
3611
3612 # Deal with common $arch aliases
3613 case "$arch" in
3614     aarch64|arm64)
3615         arch="aarch64"
3616     ;;
3617     arm*)
3618         arch="arm"
3619     ;;
3620     mips*|IP*)
3621         case "$arch" in
3622         *el)
3623             add_cppflags -EL
3624             add_ldflags -EL
3625         ;;
3626         *eb)
3627             add_cppflags -EB
3628             add_ldflags -EB
3629         ;;
3630         esac
3631         arch="mips"
3632     ;;
3633     parisc*|hppa*)
3634         arch="parisc"
3635     ;;
3636     "Power Macintosh"|ppc*|powerpc*)
3637         arch="ppc"
3638     ;;
3639     s390|s390x)
3640         arch="s390"
3641     ;;
3642     sh4|sh)
3643         arch="sh4"
3644     ;;
3645     sun4u|sparc*)
3646         arch="sparc"
3647     ;;
3648     tilegx|tile-gx)
3649         arch="tilegx"
3650     ;;
3651     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3652         arch="x86"
3653     ;;
3654 esac
3655
3656 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3657 enable $arch
3658
3659 # Add processor-specific flags
3660 if enabled aarch64; then
3661
3662     case $cpu in
3663         armv*)
3664             cpuflags="-march=$cpu"
3665         ;;
3666         *)
3667             cpuflags="-mcpu=$cpu"
3668         ;;
3669     esac
3670
3671 elif enabled alpha; then
3672
3673     cpuflags="-mcpu=$cpu"
3674
3675 elif enabled arm; then
3676
3677     check_arm_arch() {
3678         check_cpp_condition stddef.h \
3679             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3680             $cpuflags
3681     }
3682
3683     probe_arm_arch() {
3684         if   check_arm_arch 4;        then echo armv4
3685         elif check_arm_arch 4T;       then echo armv4t
3686         elif check_arm_arch 5;        then echo armv5
3687         elif check_arm_arch 5E;       then echo armv5e
3688         elif check_arm_arch 5T;       then echo armv5t
3689         elif check_arm_arch 5TE;      then echo armv5te
3690         elif check_arm_arch 5TEJ;     then echo armv5te
3691         elif check_arm_arch 6;        then echo armv6
3692         elif check_arm_arch 6J;       then echo armv6j
3693         elif check_arm_arch 6K;       then echo armv6k
3694         elif check_arm_arch 6Z;       then echo armv6z
3695         elif check_arm_arch 6ZK;      then echo armv6zk
3696         elif check_arm_arch 6T2;      then echo armv6t2
3697         elif check_arm_arch 7;        then echo armv7
3698         elif check_arm_arch 7A  7_A;  then echo armv7-a
3699         elif check_arm_arch 7S;       then echo armv7-a
3700         elif check_arm_arch 7R  7_R;  then echo armv7-r
3701         elif check_arm_arch 7M  7_M;  then echo armv7-m
3702         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3703         elif check_arm_arch 8A  8_A;  then echo armv8-a
3704         fi
3705     }
3706
3707     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3708
3709     case $cpu in
3710         armv*)
3711             cpuflags="-march=$cpu"
3712             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3713         ;;
3714         *)
3715             cpuflags="-mcpu=$cpu"
3716             case $cpu in
3717                 cortex-a*)                               subarch=armv7a  ;;
3718                 cortex-r*)                               subarch=armv7r  ;;
3719                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3720                 arm11*)                                  subarch=armv6   ;;
3721                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3722                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3723                 *)                             subarch=$(probe_arm_arch) ;;
3724             esac
3725         ;;
3726     esac
3727
3728     case "$subarch" in
3729         armv5t*)    enable fast_clz                ;;
3730         armv[6-8]*) enable fast_clz fast_unaligned ;;
3731     esac
3732
3733 elif enabled avr32; then
3734
3735     case $cpu in
3736         ap7[02]0[0-2])
3737             subarch="avr32_ap"
3738             cpuflags="-mpart=$cpu"
3739         ;;
3740         ap)
3741             subarch="avr32_ap"
3742             cpuflags="-march=$cpu"
3743         ;;
3744         uc3[ab]*)
3745             subarch="avr32_uc"
3746             cpuflags="-mcpu=$cpu"
3747         ;;
3748         uc)
3749             subarch="avr32_uc"
3750             cpuflags="-march=$cpu"
3751         ;;
3752     esac
3753
3754 elif enabled bfin; then
3755
3756     cpuflags="-mcpu=$cpu"
3757
3758 elif enabled mips; then
3759
3760     cpuflags="-march=$cpu"
3761
3762 elif enabled ppc; then
3763
3764     disable ldbrx
3765
3766     case $(tolower $cpu) in
3767         601|ppc601|powerpc601)
3768             cpuflags="-mcpu=601"
3769             disable altivec
3770         ;;
3771         603*|ppc603*|powerpc603*)
3772             cpuflags="-mcpu=603"
3773             disable altivec
3774         ;;
3775         604*|ppc604*|powerpc604*)
3776             cpuflags="-mcpu=604"
3777             disable altivec
3778         ;;
3779         g3|75*|ppc75*|powerpc75*)
3780             cpuflags="-mcpu=750"
3781             disable altivec
3782         ;;
3783         g4|745*|ppc745*|powerpc745*)
3784             cpuflags="-mcpu=7450"
3785             disable vsx
3786         ;;
3787         74*|ppc74*|powerpc74*)
3788             cpuflags="-mcpu=7400"
3789             disable vsx
3790         ;;
3791         g5|970|ppc970|powerpc970)
3792             cpuflags="-mcpu=970"
3793             disable vsx
3794         ;;
3795         power[3-6]*)
3796             cpuflags="-mcpu=$cpu"
3797             disable vsx
3798         ;;
3799         power[7-8]*)
3800             cpuflags="-mcpu=$cpu"
3801             enable ldbrx
3802         ;;
3803         cell)
3804             cpuflags="-mcpu=cell"
3805             enable ldbrx
3806             disable vsx
3807         ;;
3808         e500mc)
3809             cpuflags="-mcpu=e500mc"
3810             disable altivec
3811         ;;
3812         e500v2)
3813             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3814             disable altivec
3815             disable dcbzl
3816         ;;
3817         e500)
3818             cpuflags="-mcpu=8540 -mhard-float"
3819             disable altivec
3820             disable dcbzl
3821         ;;
3822     esac
3823
3824 elif enabled sparc; then
3825
3826     case $cpu in
3827         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3828             cpuflags="-mcpu=$cpu"
3829         ;;
3830         ultrasparc*|niagara[234])
3831             cpuflags="-mcpu=$cpu"
3832         ;;
3833     esac
3834
3835 elif enabled x86; then
3836
3837     case $cpu in
3838         i[345]86|pentium)
3839             cpuflags="-march=$cpu"
3840             disable i686
3841             disable mmx
3842         ;;
3843         # targets that do NOT support nopl and conditional mov (cmov)
3844         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3845             cpuflags="-march=$cpu"
3846             disable i686
3847         ;;
3848         # targets that do support nopl and conditional mov (cmov)
3849         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3850             cpuflags="-march=$cpu"
3851             enable i686
3852             enable fast_cmov
3853         ;;
3854         # targets that do support conditional mov but on which it's slow
3855         pentium4|pentium4m|prescott|nocona)
3856             cpuflags="-march=$cpu"
3857             enable i686
3858             disable fast_cmov
3859         ;;
3860     esac
3861
3862 fi
3863
3864 if [ "$cpu" != generic ]; then
3865     add_cflags  $cpuflags
3866     add_asflags $cpuflags
3867     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3868 fi
3869
3870 # compiler sanity check
3871 check_exec <<EOF
3872 int main(void){ return 0; }
3873 EOF
3874 if test "$?" != 0; then
3875     echo "$cc is unable to create an executable file."
3876     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3877         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3878         echo "Only do this if you know what cross compiling means."
3879     fi
3880     die "C compiler test failed."
3881 fi
3882
3883 add_cppflags -D_ISOC99_SOURCE
3884
3885 # some compilers silently accept -std=c11, so we also need to check that the
3886 # version macro is defined properly
3887 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3888     add_cflags -std=c11 ||
3889     check_cflags -std=c99
3890
3891 check_cppflags -D_FILE_OFFSET_BITS=64
3892 check_cppflags -D_LARGEFILE_SOURCE
3893
3894 add_host_cppflags -D_ISOC99_SOURCE
3895 check_host_cflags -std=c99
3896 check_host_cflags -Wall
3897 check_host_cflags $host_cflags_speed
3898
3899 check_64bit(){
3900     arch32=$1
3901     arch64=$2
3902     expr=$3
3903     check_code cc "" "int test[2*($expr) - 1]" &&
3904         subarch=$arch64 || subarch=$arch32
3905 }
3906
3907 case "$arch" in
3908     aarch64|alpha|ia64)
3909         spic=$shared
3910     ;;
3911     mips)
3912         check_64bit mips mips64 '_MIPS_SIM > 1'
3913         spic=$shared
3914     ;;
3915     parisc)
3916         check_64bit parisc parisc64 'sizeof(void *) > 4'
3917         spic=$shared
3918     ;;
3919     ppc)
3920         check_64bit ppc ppc64 'sizeof(void *) > 4'
3921         spic=$shared
3922     ;;
3923     s390)
3924         check_64bit s390 s390x 'sizeof(void *) > 4'
3925         spic=$shared
3926     ;;
3927     sparc)
3928         check_64bit sparc sparc64 'sizeof(void *) > 4'
3929         spic=$shared
3930     ;;
3931     x86)
3932         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3933         if test "$subarch" = "x86_64"; then
3934             spic=$shared
3935         fi
3936     ;;
3937 esac
3938
3939 enable $subarch
3940 enabled spic && enable_weak pic
3941
3942 enabled x86_64 && objformat=elf64 || objformat="elf32"
3943
3944 # OS specific
3945 case $target_os in
3946     aix)
3947         SHFLAGS=-shared
3948         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3949         enabled shared && add_ldflags -Wl,-brtl
3950         ;;
3951     android)
3952         disable symver
3953         enable section_data_rel_ro
3954         SLIB_INSTALL_NAME='$(SLIBNAME)'
3955         SLIB_INSTALL_LINKS=
3956         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3957         ;;
3958     haiku)
3959         prefix_default="/boot/common"
3960         network_extralibs="-lnetwork"
3961         host_extralibs=
3962         ;;
3963     sunos)
3964         SHFLAGS='-shared -Wl,-h,$$(@F)'
3965         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3966         network_extralibs="-lsocket -lnsl"
3967         # When using suncc to build, the Solaris linker will mark
3968         # an executable with each instruction set encountered by
3969         # the Solaris assembler.  As our libraries contain their own
3970         # guards for processor-specific code, instead suppress
3971         # generation of the HWCAPS ELF section on Solaris x86 only.
3972         enabled_all suncc x86 &&
3973             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3974             add_ldflags -Wl,-M,mapfile
3975         nm_default='nm -P -g'
3976         version_script='-M'
3977         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3978         ;;
3979     netbsd)
3980         disable symver
3981         oss_indev_extralibs="-lossaudio"
3982         oss_outdev_extralibs="-lossaudio"
3983         ;;
3984     openbsd|bitrig)
3985         disable symver
3986         SHFLAGS='-shared'
3987         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3988         SLIB_INSTALL_LINKS=
3989         oss_indev_extralibs="-lossaudio"
3990         oss_outdev_extralibs="-lossaudio"
3991         ;;
3992     dragonfly)
3993         disable symver
3994         ;;
3995     freebsd)
3996         ;;
3997     bsd/os)
3998         add_extralibs -lpoll -lgnugetopt
3999         ;;
4000     darwin)
4001         enabled ppc && add_asflags -force_cpusubtype_ALL
4002         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4003         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4004         add_ldflags -Wl,-dynamic,-search_paths_first
4005         check_cflags -Werror=partial-availability
4006         SLIBSUF=".dylib"
4007         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
4008         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
4009         enabled x86_64 && objformat="macho64" || objformat="macho32"
4010         enabled_any pic shared ||
4011             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4012         check_header dispatch/dispatch.h &&
4013             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4014         if test -n "$sysroot"; then
4015             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4016             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4017         fi
4018         ;;
4019     msys*)
4020         die "Native MSYS builds are discouraged, please use the MINGW environment."
4021         ;;
4022     mingw32*|mingw64*)
4023         if test $target_os = "mingw32ce"; then
4024             disable network
4025         else
4026             target_os=mingw32
4027         fi
4028         LIBTARGET=i386
4029         if enabled x86_64; then
4030             LIBTARGET="i386:x86-64"
4031         elif enabled arm; then
4032             LIBTARGET=arm-wince
4033         fi
4034         check_ldflags -Wl,--nxcompat
4035         check_ldflags -Wl,--dynamicbase
4036         shlibdir_default="$bindir_default"
4037         SLIBPREF=""
4038         SLIBSUF=".dll"
4039         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4040         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4041         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4042         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4043         SLIB_INSTALL_LINKS=
4044         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4045         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4046         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4047         enabled x86_64 && objformat="win64" || objformat="win32"
4048         dlltool="${cross_prefix}dlltool"
4049         ranlib=:
4050         enable dos_paths
4051         ;;
4052     win32|win64)
4053         disable symver
4054         if enabled shared; then
4055             # Link to the import library instead of the normal static library
4056             # for shared libs.
4057             LD_LIB='%.lib'
4058             # Cannot build both shared and static libs with MSVC or icl.
4059             disable static
4060         fi
4061         shlibdir_default="$bindir_default"
4062         SLIBPREF=""
4063         SLIBSUF=".dll"
4064         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4065         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4066         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4067         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4068         SLIB_INSTALL_LINKS=
4069         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4070         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4071         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4072         enabled x86_64 && objformat="win64" || objformat="win32"
4073         ranlib=:
4074         enable dos_paths
4075         ;;
4076     cygwin*)
4077         target_os=cygwin
4078         shlibdir_default="$bindir_default"
4079         SLIBPREF="cyg"
4080         SLIBSUF=".dll"
4081         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4082         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4083         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4084         SLIB_INSTALL_LINKS=
4085         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4086         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4087         enabled x86_64 && objformat="win64" || objformat="win32"
4088         enable dos_paths
4089         ;;
4090     *-dos|freedos|opendos)
4091         network_extralibs="-lsocket"
4092         objformat="coff"
4093         enable dos_paths
4094         add_cppflags -U__STRICT_ANSI__
4095         ;;
4096     linux)
4097         enable dv1394
4098         enable section_data_rel_ro
4099         ;;
4100     irix*)
4101         target_os=irix
4102         ranlib="echo ignoring ranlib"
4103         ;;
4104     os/2*)
4105         ln_s="cp -f"
4106         objformat="aout"
4107         add_cppflags -D_GNU_SOURCE
4108         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4109         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4110         LIBSUF="_s.a"
4111         SLIBPREF=""
4112         SLIBSUF=".dll"
4113         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4114         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4115         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4116             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4117             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4118             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4119             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4120         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4121             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4122         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4123         enable dos_paths
4124         ;;
4125     gnu/kfreebsd)
4126         add_cppflags -D_BSD_SOURCE
4127         ;;
4128     gnu)
4129         ;;
4130     qnx)
4131         add_cppflags -D_QNX_SOURCE
4132         network_extralibs="-lsocket"
4133         ;;
4134     symbian)
4135         SLIBSUF=".dll"
4136         enable dos_paths
4137         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4138         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4139         add_ldflags -Wl,--target1-abs,--no-undefined \
4140                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4141                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4142         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4143                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4144                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4145         ;;
4146     osf1)
4147         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4148         ;;
4149     minix)
4150         ;;
4151     none)
4152         ;;
4153     *)
4154         die "Unknown OS '$target_os'."
4155         ;;
4156 esac
4157
4158 # determine libc flavour
4159
4160 probe_libc(){
4161     pfx=$1
4162     pfx_no_=${pfx%_}
4163     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4164     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4165         eval ${pfx}libc_type=uclibc
4166         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4167     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4168         eval ${pfx}libc_type=glibc
4169         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4170     # MinGW headers can be installed on Cygwin, so check for newlib first.
4171     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4172         eval ${pfx}libc_type=newlib
4173         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4174     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4175     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4176         eval ${pfx}libc_type=mingw64
4177         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4178         eval test \$${pfx_no_}cc_type = "gcc" &&
4179             add_${pfx}cppflags -D__printf__=__gnu_printf__
4180     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4181          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4182         eval ${pfx}libc_type=mingw32
4183         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4184             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4185             die "ERROR: MinGW32 runtime version must be >= 3.15."
4186         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4187         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4188             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4189         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4190             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4191         eval test \$${pfx_no_}cc_type = "gcc" &&
4192             add_${pfx}cppflags -D__printf__=__gnu_printf__
4193     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4194         eval ${pfx}libc_type=msvcrt
4195         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4196             if [ "$pfx" = host_ ]; then
4197                 add_host_cppflags -Dsnprintf=_snprintf
4198             else
4199                 add_compat strtod.o strtod=avpriv_strtod
4200                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4201                                              _snprintf=avpriv_snprintf  \
4202                                              vsnprintf=avpriv_vsnprintf
4203             fi
4204         fi
4205         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4206         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4207         # 0x601 by default unless something else is set by the user.
4208         # This can easily lead to us detecting functions only present
4209         # in such new versions and producing binaries requiring windows 7.0.
4210         # Therefore explicitly set the default to XP unless the user has
4211         # set something else on the command line.
4212         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4213         # family. For these cases, configure is free to use any functions
4214         # found in the SDK headers by default. (Alternatively, we could force
4215         # _WIN32_WINNT to 0x0602 in that case.)
4216         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4217             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4218 #ifdef WINAPI_FAMILY
4219 #include <winapifamily.h>
4220 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4221 #error not desktop
4222 #endif
4223 #endif
4224 EOF
4225         if [ "$pfx" = "" ]; then
4226             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4227         fi
4228     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4229         eval ${pfx}libc_type=klibc
4230     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4231         eval ${pfx}libc_type=bionic
4232     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4233         eval ${pfx}libc_type=solaris
4234         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4235     else
4236         eval ${pfx}libc_type=default
4237         add_${pfx}cppflags -D_DEFAULT_SOURCE
4238     fi
4239 }
4240
4241 probe_libc
4242 test -n "$libc_type" && enable libc_$libc_type
4243 probe_libc host_
4244 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4245
4246 # hacks for compiler/libc/os combinations
4247
4248 case $libc_type in
4249     bionic)
4250         add_compat strtod.o strtod=avpriv_strtod
4251         ;;
4252     glibc)
4253         if enabled tms470; then
4254             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4255             add_cppflags -D__USER_LABEL_PREFIX__=
4256             add_cppflags -D__builtin_memset=memset
4257             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4258             add_cflags   -pds=48    # incompatible redefinition of macro
4259         elif enabled ccc; then
4260             add_ldflags -Wl,-z,now  # calls to libots crash without this
4261         fi
4262         ;;
4263 esac
4264
4265 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4266     add_cppflags '-I\$(SRC_PATH)/compat/float'
4267
4268 esc(){
4269     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4270 }
4271
4272 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4273
4274 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4275
4276 set_default $PATHS_LIST
4277 set_default nm
4278
4279 # we need to build at least one lib type
4280 if ! enabled_any static shared; then
4281     cat <<EOF
4282 At least one library type must be built.
4283 Specify --enable-static to build the static libraries or --enable-shared to
4284 build the shared libraries as well. To only build the shared libraries specify
4285 --disable-static in addition to --enable-shared.
4286 EOF
4287     exit 1
4288 fi
4289
4290 disabled optimizations || check_cflags -fomit-frame-pointer
4291
4292 enable_weak_pic() {
4293     disabled pic && return
4294     enable pic
4295     add_cppflags -DPIC
4296     case "$target_os" in
4297     mingw*|cygwin*)
4298         ;;
4299     *)
4300         add_cflags -fPIC
4301         ;;
4302     esac
4303     add_asflags  -fPIC
4304 }
4305
4306 enabled pic && enable_weak_pic
4307
4308 check_cc <<EOF || die "Symbol mangling check failed."
4309 int ff_extern;
4310 EOF
4311 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4312 extern_prefix=${sym%%ff_extern*}
4313
4314 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4315
4316 _restrict=
4317 for restrict_keyword in restrict __restrict__ __restrict; do
4318     check_cc <<EOF && _restrict=$restrict_keyword && break
4319 void foo(char * $restrict_keyword p);
4320 EOF
4321 done
4322
4323 check_cc <<EOF && enable pragma_deprecated
4324 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4325 EOF
4326
4327 check_cc <<EOF && enable attribute_packed
4328 struct { int x; } __attribute__((packed)) x;
4329 EOF
4330
4331 check_cc <<EOF && enable attribute_may_alias
4332 union { int x; } __attribute__((may_alias)) x;
4333 EOF
4334
4335 check_cc <<EOF || die "endian test failed"
4336 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4337 EOF
4338 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4339
4340 check_gas() {
4341     log "check_gas using '$as' as AS"
4342     # :vararg is used on aarch64, arm and ppc altivec
4343     check_as <<EOF || return 1
4344 .macro m n, y:vararg=0
4345 \n: .int \y
4346 .endm
4347 m x
4348 EOF
4349     # .altmacro is only used in arm asm
4350     ! enabled arm || check_as <<EOF || return 1
4351 .altmacro
4352 EOF
4353     enable gnu_as
4354     return 0
4355 }
4356
4357 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4358     nogas=:
4359     enabled_any arm aarch64 && nogas=die
4360     enabled_all ppc altivec && nogas=warn
4361     as_noop=-v
4362
4363     case $as_type in
4364         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4365         gcc)  gaspp_as_type=gas ;;
4366         *)    gaspp_as_type=$as_type ;;
4367     esac
4368
4369     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4370
4371     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4372         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4373
4374     if ! check_gas ; then
4375         as=${gas:=$as}
4376         check_gas || \
4377             $nogas "GNU assembler not found, install/update gas-preprocessor"
4378     fi
4379
4380     check_as <<EOF && enable as_func
4381 .func test
4382 .endfunc
4383 EOF
4384 fi
4385
4386 check_inline_asm inline_asm_labels '"1:\n"'
4387
4388 if enabled aarch64; then
4389     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4390     # internal assembler in clang 3.3 does not support this instruction
4391     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4392     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4393
4394     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4395
4396 elif enabled alpha; then
4397
4398     check_cflags -mieee
4399
4400 elif enabled arm; then
4401
4402     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4403     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4404     enabled thumb && check_cflags -mthumb || check_cflags -marm
4405
4406     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4407         enable vfp_args
4408     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4409         enable vfp_args
4410     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4411         case "${cross_prefix:-$cc}" in
4412             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4413             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4414 __asm__ (".eabi_attribute 28, 1");
4415 int main(void) { return 0; }
4416 EOF
4417         esac
4418         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4419     fi
4420
4421     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4422     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4423     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4424     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4425     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4426     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4427
4428     [ $target_os = linux ] || [ $target_os = android ] ||
4429         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4430             $ARCH_EXT_LIST_ARM
4431
4432     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4433
4434     check_as <<EOF && enable as_arch_directive
4435 .arch armv7-a
4436 EOF
4437     check_as <<EOF && enable as_fpu_directive
4438 .fpu neon
4439 EOF
4440
4441     # llvm's integrated assembler supports .object_arch from llvm 3.5
4442     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4443         check_as <<EOF && enable as_object_arch
4444 .object_arch armv4
4445 EOF
4446
4447     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4448
4449 elif enabled mips; then
4450
4451     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4452
4453     # make sure that only an instruction set is enabled
4454     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4455
4456     if enabled mips64; then
4457         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4458             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4459                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4460     else
4461         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4462             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4463                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4464     fi
4465
4466 elif enabled parisc; then
4467
4468     if enabled gcc; then
4469         case $($cc -dumpversion) in
4470             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4471         esac
4472     fi
4473
4474 elif enabled ppc; then
4475
4476     enable local_aligned_8 local_aligned_16 local_aligned_32
4477
4478     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4479     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4480     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4481     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4482
4483     if enabled altivec; then
4484         check_cflags -maltivec -mabi=altivec
4485
4486         # check if our compiler supports Motorola AltiVec C API
4487         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4488                                  vector signed int v2 = (vector signed int) { 1 };
4489                                  v1 = vec_add(v1, v2);" ||
4490             disable altivec
4491
4492         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4493     fi
4494
4495     if enabled vsx; then
4496         check_cflags -mvsx &&
4497         check_code cc altivec.h "int v[4] = { 0 };
4498                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4499             disable vsx
4500     fi
4501
4502     if enabled power8; then
4503         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4504     fi
4505
4506 elif enabled x86; then
4507
4508     check_builtin rdtsc    intrin.h   "__rdtsc()"
4509     check_builtin mm_empty mmintrin.h "_mm_empty()"
4510
4511     enable local_aligned_8 local_aligned_16 local_aligned_32
4512
4513     # check whether EBP is available on x86
4514     # As 'i' is stored on the stack, this program will crash
4515     # if the base pointer is used to access it because the
4516     # base pointer is cleared in the inline assembly code.
4517     check_exec_crash <<EOF && enable ebp_available
4518 volatile int i=0;
4519 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4520 return i;
4521 EOF
4522
4523     # check whether EBX is available on x86
4524     check_inline_asm ebx_available '""::"b"(0)' &&
4525         check_inline_asm ebx_available '"":::"%ebx"'
4526
4527     # check whether xmm clobbers are supported
4528     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4529
4530     # check whether binutils is new enough to compile SSSE3/MMXEXT
4531     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4532     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4533
4534     probe_x86asm(){
4535         x86asmexe_probe=$1
4536         if check_cmd $x86asmexe_probe -v; then
4537             x86asmexe=$x86asmexe_probe
4538             x86asm_type=nasm
4539             x86asm_debug="-g -F dwarf"
4540             X86ASMDEP=
4541             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4542         elif check_cmd $x86asmexe_probe --version; then
4543             x86asmexe=$x86asmexe_probe
4544             x86asm_type=yasm
4545             x86asm_debug="-g dwarf2"
4546             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4547             X86ASM_DEPFLAGS=
4548         fi
4549         check_x86asm "movbe ecx, [5]" && enable x86asm
4550     }
4551
4552     if ! disabled_any asm mmx x86asm; then
4553         disable x86asm
4554         for program in $x86asmexe nasm yasm; do
4555             probe_x86asm $program && break
4556         done
4557         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4558         X86ASMFLAGS="-f $objformat"
4559         enabled pic               && append X86ASMFLAGS "-DPIC"
4560         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4561         case "$objformat" in
4562             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4563         esac
4564
4565         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4566         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4567         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4568         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4569         check_x86asm "CPU amdnop"                      || disable cpunop
4570     fi
4571
4572     case "$cpu" in
4573         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4574             disable fast_clz
4575         ;;
4576     esac
4577
4578 fi
4579
4580 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4581
4582 check_ldflags -Wl,--as-needed
4583
4584 if ! disabled network; then
4585     check_func getaddrinfo $network_extralibs
4586     check_func inet_aton $network_extralibs
4587
4588     check_type netdb.h "struct addrinfo"
4589     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4590     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4591     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4592     check_type poll.h "struct pollfd"
4593     check_type netinet/sctp.h "struct sctp_event_subscribe"
4594     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4595     check_type netinet/in.h "struct sockaddr_in6"
4596     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4597     check_type "sys/types.h sys/socket.h" socklen_t
4598
4599     # Prefer arpa/inet.h over winsock2
4600     if check_header arpa/inet.h ; then
4601         check_func closesocket
4602     elif check_header winsock2.h ; then
4603         check_func_headers winsock2.h closesocket -lws2 &&
4604             network_extralibs="-lws2" ||
4605         { check_func_headers winsock2.h closesocket -lws2_32 &&
4606             network_extralibs="-lws2_32"; } || disable winsock2_h network
4607         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4608
4609         check_type ws2tcpip.h socklen_t
4610         check_type ws2tcpip.h "struct addrinfo"
4611         check_type ws2tcpip.h "struct group_source_req"
4612         check_type ws2tcpip.h "struct ip_mreq_source"
4613         check_type ws2tcpip.h "struct ipv6_mreq"
4614         check_type winsock2.h "struct pollfd"
4615         check_struct winsock2.h "struct sockaddr" sa_len
4616         check_type ws2tcpip.h "struct sockaddr_in6"
4617         check_type ws2tcpip.h "struct sockaddr_storage"
4618     else
4619         disable network
4620     fi
4621 fi
4622
4623 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4624 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4625 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4626 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4627
4628 case "$custom_allocator" in
4629     jemalloc)
4630         # jemalloc by default does not use a prefix
4631         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4632     ;;
4633     tcmalloc)
4634         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4635         malloc_prefix=tc_
4636     ;;
4637 esac
4638
4639 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4640 check_func  ${malloc_prefix}memalign            && enable memalign
4641 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4642
4643 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4644     { check_lib clock_gettime time.h clock_gettime ||
4645       check_lib clock_gettime time.h clock_gettime -lrt; }
4646
4647 check_func  fcntl
4648 check_func  fork
4649 check_func  gethrtime
4650 check_func  getopt
4651 check_func  getrusage
4652 check_func  gettimeofday
4653 check_func  gmtime_r
4654 check_func  isatty
4655 check_func  localtime_r
4656 check_func  mach_absolute_time
4657 check_func  mkstemp
4658 check_func  mmap
4659 check_func  mprotect
4660 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4661 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4662 check_func  sched_getaffinity
4663 check_func  setrlimit
4664 check_func  strerror_r
4665 check_func  sysconf
4666 check_func  sysctl
4667 check_func  usleep
4668
4669 check_func_headers io.h setmode
4670 check_func_headers stdlib.h getenv
4671
4672 check_func_headers windows.h GetProcessAffinityMask
4673 check_func_headers windows.h GetProcessTimes
4674 check_func_headers windows.h GetSystemTimeAsFileTime
4675 check_func_headers windows.h LoadLibrary
4676 check_func_headers windows.h MapViewOfFile
4677 check_func_headers windows.h SetConsoleTextAttribute
4678 check_func_headers windows.h Sleep
4679 check_func_headers windows.h VirtualAlloc
4680 check_struct windows.h "CONDITION_VARIABLE" Ptr
4681
4682 check_header d3d11.h
4683 check_header direct.h
4684 check_header dlfcn.h
4685 check_header dxgidebug.h
4686 check_header dxva.h
4687 check_header dxva2api.h
4688 check_header io.h
4689 check_header mach/mach_time.h
4690 check_header malloc.h
4691 check_header poll.h
4692 check_header sys/mman.h
4693 check_header sys/param.h
4694 check_header sys/resource.h
4695 check_header sys/select.h
4696 check_header sys/time.h
4697 check_header sys/un.h
4698 check_header unistd.h
4699 check_header valgrind/valgrind.h
4700 check_header VideoDecodeAcceleration/VDADecoder.h
4701 check_header windows.h
4702
4703 # it seems there are versions of clang in some distros that try to use the
4704 # gcc headers, which explodes for stdatomic
4705 # so we also check that atomics actually work here
4706 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4707
4708 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4709 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4710 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4711 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4712
4713 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4714
4715 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4716 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4717 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4718
4719 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4720 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4721 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4722
4723 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4724 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4725 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4726 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4727 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4728 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4729 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4730 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4731 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4732
4733 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4734
4735 if ! disabled w32threads && ! enabled pthreads; then
4736     check_lib w32threads "windows.h process.h" _beginthreadex
4737 fi
4738
4739 # check for some common methods of building with pthread support
4740 # do this before the optional library checks as some of them require pthreads
4741 if ! disabled pthreads && ! enabled w32threads; then
4742     if check_lib pthreads pthread.h pthread_join -pthread; then
4743         add_cflags -pthread
4744     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4745         add_cflags -pthreads
4746     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4747         :
4748     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4749         :
4750     elif check_func pthread_join; then
4751         enable pthreads
4752     fi
4753 fi
4754
4755 enabled pthreads &&
4756     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4757
4758 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4759 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4760
4761 # On some systems dynamic loading requires no extra linker flags
4762 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4763
4764 check_lib libm math.h sin -lm
4765
4766 atan2f_args=2
4767 ldexpf_args=2
4768 powf_args=2
4769
4770 for func in $MATH_FUNCS; do
4771     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4772 done
4773
4774 # these are off by default, so fail if requested and not available
4775 enabled avisynth          && require_header avisynth/avisynth_c.h
4776 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4777 enabled cuda              && require cuda cuda.h cuInit -lcuda
4778 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4779 enabled frei0r            && require_header frei0r.h
4780 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4781 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4782 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4783 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4784 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4785 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4786 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4787 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4788 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4789                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4790                                done || die "ERROR: libgsm not found"; }
4791 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4792 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4793 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4794 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4795 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4796 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4797 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4798 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4799 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4800 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4801 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4802                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4803 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4804 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4805 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4806 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4807 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4808 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4809 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4810 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4811 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4812 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4813 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4814 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4815                              { enabled libvpx_vp8_decoder &&
4816                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4817                                enabled libvpx_vp8_encoder &&
4818                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4819                                enabled libvpx_vp9_decoder &&
4820                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4821                                enabled libvpx_vp9_encoder &&
4822                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4823                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4824                                    die "libvpx enabled but no supported decoders/encoders found"
4825                              }
4826 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4827 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4828 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4829                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4830                              { check_cpp_condition x264.h "X264_MPEG2" &&
4831                                enable libx262; }
4832 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4833                              require_cpp_condition x265.h "X265_BUILD >= 57"
4834 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4835 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4836 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4837                                { ! enabled cross_compile &&
4838                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4839                                  add_ldflags -L/opt/vc/lib/ &&
4840                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4841                                die "ERROR: mmal not found" &&
4842                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4843 enabled omx               && require_header OMX_Core.h
4844 enabled omx_rpi           && { check_header OMX_Core.h ||
4845                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4846                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4847 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4848                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4849                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4850                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4851                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4852                                die "ERROR: openssl not found"; }
4853
4854 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4855
4856 if enabled nvenc; then
4857     require_header nvEncodeAPI.h
4858     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4859 fi
4860
4861 # SDL is "special" and adds some CFLAGS that should not pollute anything else.
4862 if enabled avplay; then
4863     CFLAGS_SAVE=$CFLAGS
4864     check_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent &&
4865     sdl_cflags=$pkg_cflags
4866     CFLAGS=$CFLAGS_SAVE
4867 fi
4868
4869 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4870 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4871
4872 check_header linux/fb.h
4873 check_header linux/videodev2.h
4874 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4875
4876 check_header AVFoundation/AVFoundation.h
4877
4878 check_header sys/videoio.h
4879
4880 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4881 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4882 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4883 # w32api 3.12 had it defined wrong
4884 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4885
4886 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4887 { check_header dev/bktr/ioctl_meteor.h &&
4888   check_header dev/bktr/ioctl_bt848.h; } ||
4889 { check_header machine/ioctl_meteor.h &&
4890   check_header machine/ioctl_bt848.h; } ||
4891 { check_header dev/video/meteor/ioctl_meteor.h &&
4892   check_header dev/video/bktr/ioctl_bt848.h; } ||
4893 check_header dev/ic/bt8xx.h
4894
4895 check_header sys/soundcard.h
4896 check_header soundcard.h
4897
4898 enabled_any alsa_indev alsa_outdev &&
4899     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4900
4901 enabled libjack &&
4902     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4903
4904 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4905
4906 if enabled libcdio; then
4907     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4908     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4909     die "ERROR: No usable libcdio/cdparanoia found"
4910 fi
4911
4912 if enabled libxcb; then
4913     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4914     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4915     disabled libxcb_shm ||
4916         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4917     disabled libxcb_xfixes ||
4918         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4919 fi
4920
4921 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4922 # the desktop api partition
4923 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4924 #ifdef WINAPI_FAMILY
4925 #include <winapifamily.h>
4926 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4927 #error desktop, not uwp
4928 #else
4929 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4930 #endif
4931 #else
4932 #error no family set
4933 #endif
4934 EOF
4935
4936 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4937
4938 enabled vaapi &&
4939     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4940     disable vaapi
4941
4942 enabled vaapi &&
4943     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4944
4945 enabled vaapi &&
4946     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4947
4948 enabled vdpau &&
4949     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4950     disable vdpau
4951
4952 enabled vdpau &&
4953     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4954
4955 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4956
4957 # add some useful compiler flags if supported
4958 check_cflags -Wdeclaration-after-statement
4959 check_cflags -Wall
4960 check_cflags -Wdisabled-optimization
4961 check_cflags -Wpointer-arith
4962 check_cflags -Wredundant-decls
4963 check_cflags -Wwrite-strings
4964 check_cflags -Wtype-limits
4965 check_cflags -Wundef
4966 check_cflags -Wmissing-prototypes
4967 check_cflags -Wstrict-prototypes
4968
4969 if enabled extra_warnings; then
4970     check_cflags -Wcast-qual
4971     check_cflags -Wextra
4972     check_cflags -Wpedantic
4973 fi
4974
4975 check_disable_warning(){
4976     warning_flag=-W${1#-Wno-}
4977     test_cflags $warning_flag && add_cflags $1
4978 }
4979
4980 check_disable_warning -Wno-parentheses
4981 check_disable_warning -Wno-switch
4982 check_disable_warning -Wno-format-zero-length
4983 check_disable_warning -Wno-pointer-sign
4984
4985 check_disable_warning_headers(){
4986     warning_flag=-W${1#-Wno-}
4987     test_cflags $warning_flag && add_cflags_headers $1
4988 }
4989
4990 check_disable_warning_headers -Wno-deprecated-declarations
4991 check_disable_warning_headers -Wno-unused-variable
4992
4993 check_objcflags -fobjc-arc && enable objc_arc
4994
4995 check_cc <<EOF && enable blocks_extension
4996 void (^block)(void);
4997 EOF
4998
4999 # add some linker flags
5000 check_ldflags -Wl,--warn-common
5001 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5002 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
5003 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5004
5005 # add some strip flags
5006 # -wN '..@*' is more selective than -x, but not available everywhere.
5007 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
5008
5009 enabled neon_clobber_test &&
5010     check_ldflags -Wl,--wrap,avcodec_open2              \
5011                   -Wl,--wrap,avcodec_decode_audio4      \
5012                   -Wl,--wrap,avcodec_decode_video2      \
5013                   -Wl,--wrap,avcodec_decode_subtitle2   \
5014                   -Wl,--wrap,avcodec_encode_audio2      \
5015                   -Wl,--wrap,avcodec_encode_video2      \
5016                   -Wl,--wrap,avcodec_encode_subtitle    \
5017                   -Wl,--wrap,avcodec_send_packet        \
5018                   -Wl,--wrap,avcodec_receive_packet     \
5019                   -Wl,--wrap,avcodec_send_frame         \
5020                   -Wl,--wrap,avcodec_receive_frame      \
5021                   -Wl,--wrap,avresample_convert ||
5022     disable neon_clobber_test
5023
5024 enabled xmm_clobber_test &&
5025     check_ldflags -Wl,--wrap,avcodec_open2              \
5026                   -Wl,--wrap,avcodec_decode_audio4      \
5027                   -Wl,--wrap,avcodec_decode_video2      \
5028                   -Wl,--wrap,avcodec_decode_subtitle2   \
5029                   -Wl,--wrap,avcodec_encode_audio2      \
5030                   -Wl,--wrap,avcodec_encode_video2      \
5031                   -Wl,--wrap,avcodec_encode_subtitle    \
5032                   -Wl,--wrap,avcodec_send_packet        \
5033                   -Wl,--wrap,avcodec_receive_packet     \
5034                   -Wl,--wrap,avcodec_send_frame         \
5035                   -Wl,--wrap,avcodec_receive_frame      \
5036                   -Wl,--wrap,avresample_convert         \
5037                   -Wl,--wrap,sws_scale ||
5038     disable xmm_clobber_test
5039
5040 check_ld <<EOF && enable proper_dce
5041 extern const int array[512];
5042 static inline int func(void) { return array[0]; }
5043 int main(void) { return 0; }
5044 EOF
5045
5046 if enabled proper_dce; then
5047     echo "X { local: *; };" > $TMPV
5048     if test_ldflags -Wl,${version_script},$TMPV; then
5049         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
5050         check_cc <<EOF && enable symver_asm_label
5051 void ff_foo(void) __asm__ ("av_foo@VERSION");
5052 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5053 EOF
5054         check_cc <<EOF && enable symver_gnu_asm
5055 __asm__(".symver ff_foo,av_foo@VERSION");
5056 void ff_foo(void) {}
5057 EOF
5058     fi
5059 fi
5060
5061 if [ -z "$optflags" ]; then
5062     if enabled small; then
5063         optflags=$cflags_size
5064     elif enabled optimizations; then
5065         optflags=$cflags_speed
5066     else
5067         optflags=$cflags_noopt
5068     fi
5069 fi
5070
5071 check_optflags(){
5072     check_cflags "$@"
5073     enabled lto && check_ldflags "$@"
5074 }
5075
5076 check_optflags $optflags
5077 check_optflags -fno-math-errno
5078 check_optflags -fno-signed-zeros
5079
5080 if enabled lto; then
5081     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5082     check_cflags  -flto
5083     check_ldflags -flto $cpuflags
5084 fi
5085
5086 if enabled icc; then
5087     # Just warnings, no remarks
5088     check_cflags -w1
5089     # -wd: Disable following warnings
5090     # 144, 167, 556: -Wno-pointer-sign
5091     # 1292: attribute "foo" ignored
5092     # 1419: external declaration in primary source file
5093     # 10006: ignoring unknown option -fno-signed-zeros
5094     # 10148: ignoring unknown option -Wno-parentheses
5095     # 10156: ignoring option '-W'; no argument required
5096     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
5097     # 11030: Warning unknown option --as-needed
5098     # 10156: ignoring option '-export'; no argument required
5099     check_ldflags -wd10156,11030
5100     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5101     enable ebp_available
5102     if enabled x86_32; then
5103         icc_version=$($cc -dumpversion)
5104         test ${icc_version%%.*} -ge 11 &&
5105             check_cflags -falign-stack=maintain-16-byte ||
5106             disable aligned_stack
5107     fi
5108 elif enabled ccc; then
5109     # disable some annoying warnings
5110     add_cflags -msg_disable bitnotint
5111     add_cflags -msg_disable mixfuncvoid
5112     add_cflags -msg_disable nonstandcast
5113     add_cflags -msg_disable unsupieee
5114 elif enabled gcc; then
5115     check_optflags -fno-tree-vectorize
5116     check_cflags -Werror=implicit-function-declaration
5117     check_cflags -Werror=missing-prototypes
5118     check_cflags -Werror=return-type
5119     check_cflags -Werror=declaration-after-statement
5120     check_cflags -Werror=vla
5121     check_cflags -Werror=format-security
5122     check_cflags -fdiagnostics-color=auto
5123     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5124 elif enabled llvm_gcc; then
5125     check_cflags -mllvm -stack-alignment=16
5126 elif enabled clang; then
5127     check_cflags -mllvm -stack-alignment=16
5128     check_cflags -Qunused-arguments
5129     check_cflags -Werror=implicit-function-declaration
5130     check_cflags -Werror=missing-prototypes
5131     check_cflags -Werror=return-type
5132 elif enabled cparser; then
5133     add_cflags -Wno-missing-variable-declarations
5134     add_cflags -Wno-empty-statement
5135 elif enabled armcc; then
5136     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5137     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5138     # 2523: use of inline assembly is deprecated
5139     add_cflags -W${armcc_opt},--diag_suppress=2523
5140     add_cflags -W${armcc_opt},--diag_suppress=1207
5141     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5142     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5143     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5144     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5145 elif enabled tms470; then
5146     add_cflags -pds=824 -pds=837
5147     disable inline_asm
5148 elif enabled pathscale; then
5149     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5150     disable inline_asm
5151 elif enabled_any msvc icl; then
5152     enabled x86_32 && disable aligned_stack
5153     enabled_all x86_32 debug && add_cflags -Oy-
5154     enabled debug && add_ldflags -debug
5155     enable pragma_deprecated
5156     if enabled icl; then
5157         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5158         # (correctly) on icl 13.x.
5159         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5160             add_cflags -Qansi-alias
5161         # icl will pass the inline asm tests but inline asm is currently
5162         # not supported (build will fail)
5163         disable inline_asm
5164     fi
5165     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5166     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5167     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5168     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5169     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5170     # MSVC 2013 and newer can handle it fine.
5171     # If this declspec fails, force including stdlib.h before the restrict redefinition
5172     # happens in config.h.
5173     if [ $_restrict != restrict ]; then
5174         check_cc <<EOF || add_cflags -FIstdlib.h
5175 __declspec($_restrict) void* foo(int);
5176 EOF
5177     fi
5178 fi
5179
5180 for pfx in "" host_; do
5181     varname=${pfx%_}cc_type
5182     eval "type=\$$varname"
5183     if [ "$type" = "msvc" ]; then
5184         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5185 static inline int foo(int a) { return a; }
5186 EOF
5187     fi
5188 done
5189
5190 case $as_type in
5191     clang)
5192         add_asflags -Qunused-arguments
5193     ;;
5194 esac
5195
5196 case $ld_type in
5197     clang)
5198         check_ldflags -Qunused-arguments
5199     ;;
5200 esac
5201
5202 case $target_os in
5203     osf1)
5204         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5205     ;;
5206 esac
5207
5208 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5209
5210 check_deps $CONFIG_LIST       \
5211            $CONFIG_EXTRA      \
5212            $HAVE_LIST         \
5213            $ALL_COMPONENTS    \
5214
5215 flatten_extralibs(){
5216     unset nested_entries
5217     list_name=$1
5218     eval list=\$${1}
5219     for entry in $list; do
5220         entry_copy=$entry
5221         resolve entry_copy
5222         append nested_entries $(filter '*_extralibs' $entry_copy)
5223         flat_entries=$(filter_out '*_extralibs' $entry_copy)
5224         eval $entry="\$flat_entries"
5225     done
5226     append $list_name "$nested_entries"
5227
5228     resolve nested_entries
5229     if test -n "$(filter '*_extralibs' $nested_entries)"; then
5230         flatten_extralibs $list_name
5231     fi
5232 }
5233
5234 for linkunit in $LIBRARY_LIST; do
5235     unset current_extralibs
5236     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
5237     for comp in ${components}; do
5238         enabled $comp || continue
5239         comp_extralibs="${comp}_extralibs"
5240         append current_extralibs $comp_extralibs
5241     done
5242     eval prepend ${linkunit}_extralibs $current_extralibs
5243 done
5244
5245 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5246     flatten_extralibs ${linkunit}_extralibs
5247     unique  ${linkunit}_extralibs
5248     resolve ${linkunit}_extralibs
5249     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
5250 done
5251
5252 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5253
5254 for thread in $THREADS_LIST; do
5255     if enabled $thread; then
5256         test -n "$thread_type" &&
5257             die "ERROR: Only one thread type must be selected." ||
5258             thread_type="$thread"
5259     fi
5260 done
5261
5262 if disabled stdatomic_h; then
5263     if enabled atomics_gcc; then
5264         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
5265     elif enabled atomics_win32; then
5266         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
5267     elif enabled atomics_suncc; then
5268         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
5269     elif enabled pthreads; then
5270         add_compat atomics/pthread/stdatomic.o
5271         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
5272     else
5273         enabled threads && die "Threading is enabled, but no atomics are available"
5274         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
5275     fi
5276 fi
5277
5278 enabled zlib && add_cppflags -DZLIB_CONST
5279
5280 # conditional library dependencies, in linking order
5281 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5282 enabled_any asyncts_filter resample_filter &&
5283                            prepend avfilter_deps "avresample"
5284 enabled scale_filter    && prepend avfilter_deps "swscale"
5285
5286 enabled opus_decoder    && prepend avcodec_deps "avresample"
5287
5288 expand_deps(){
5289     lib_deps=${1}_deps
5290     eval "deps=\$$lib_deps"
5291     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5292     unique $lib_deps
5293 }
5294
5295 map 'expand_deps $v' $LIBRARY_LIST
5296
5297 if test "$quiet" != "yes"; then
5298
5299 echo "install prefix            $prefix"
5300 echo "source path               $source_path"
5301 echo "C compiler                $cc"
5302 echo "C library                 $libc_type"
5303 if test "$host_cc" != "$cc"; then
5304     echo "host C compiler           $host_cc"
5305     echo "host C library            $host_libc_type"
5306 fi
5307 echo "ARCH                      $arch ($cpu)"
5308 if test "$extra_version" != ""; then
5309     echo "version string suffix     $extra_version"
5310 fi
5311 echo "big-endian                ${bigendian-no}"
5312 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5313 if enabled x86; then
5314     echo "standalone assembly       ${x86asm-no}"
5315     echo "x86 assembler             ${x86asmexe}"
5316     echo "MMX enabled               ${mmx-no}"
5317     echo "MMXEXT enabled            ${mmxext-no}"
5318     echo "3DNow! enabled            ${amd3dnow-no}"
5319     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5320     echo "SSE enabled               ${sse-no}"
5321     echo "SSSE3 enabled             ${ssse3-no}"
5322     echo "AVX enabled               ${avx-no}"
5323     echo "XOP enabled               ${xop-no}"
5324     echo "FMA3 enabled              ${fma3-no}"
5325     echo "FMA4 enabled              ${fma4-no}"
5326     echo "i686 features enabled     ${i686-no}"
5327     echo "CMOV is fast              ${fast_cmov-no}"
5328     echo "EBX available             ${ebx_available-no}"
5329     echo "EBP available             ${ebp_available-no}"
5330 fi
5331 if enabled aarch64; then
5332     echo "NEON enabled              ${neon-no}"
5333     echo "VFP enabled               ${vfp-no}"
5334 fi
5335 if enabled arm; then
5336     echo "ARMv5TE enabled           ${armv5te-no}"
5337     echo "ARMv6 enabled             ${armv6-no}"
5338     echo "ARMv6T2 enabled           ${armv6t2-no}"
5339     echo "VFP enabled               ${vfp-no}"
5340     echo "NEON enabled              ${neon-no}"
5341 fi
5342 if enabled ppc; then
5343     echo "AltiVec enabled           ${altivec-no}"
5344     echo "VSX enabled               ${vsx-no}"
5345     echo "POWER8 enabled            ${power8-no}"
5346     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5347     echo "dcbzl available           ${dcbzl-no}"
5348 fi
5349 echo "debug symbols             ${debug-no}"
5350 echo "optimize for size         ${small-no}"
5351 echo "optimizations             ${optimizations-no}"
5352 echo "static                    ${static-no}"
5353 echo "shared                    ${shared-no}"
5354 echo "network support           ${network-no}"
5355 echo "threading support         ${thread_type-no}"
5356 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5357 test -n "$random_seed" &&
5358     echo "random seed               ${random_seed}"
5359 echo
5360
5361 echo "External libraries:"
5362 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5363 echo
5364 echo "External libraries providing hardware acceleration:"
5365 print_enabled '' $HWACCEL_LIBRARY_LIST | print_3_columns
5366 echo
5367
5368 echo "Libraries:"
5369 print_enabled '' $LIBRARY_LIST | print_3_columns
5370 echo
5371
5372 echo "Programs:"
5373 print_enabled '' $PROGRAM_LIST | print_3_columns
5374 echo
5375
5376 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5377     echo "Enabled ${type}s:"
5378     eval list=\$$(toupper $type)_LIST
5379     print_enabled '_*' $list | print_3_columns
5380     echo
5381 done
5382
5383 if test -n "$ignore_tests"; then
5384     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
5385     echo "Ignored FATE tests:"
5386     echo $ignore_tests | print_3_columns
5387     echo
5388 fi
5389
5390 license="LGPL version 2.1 or later"
5391 if enabled nonfree; then
5392     license="nonfree and unredistributable"
5393 elif enabled gplv3; then
5394     license="GPL version 3 or later"
5395 elif enabled lgplv3; then
5396     license="LGPL version 3 or later"
5397 elif enabled gpl; then
5398     license="GPL version 2 or later"
5399 fi
5400
5401 echo "License: $license"
5402
5403 echo "Creating configuration files ..."
5404
5405 fi # test "$quiet" != "yes"
5406
5407 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5408
5409 config_files="$TMPH avbuild/config.mak"
5410
5411 cat > avbuild/config.mak <<EOF
5412 # Automatically generated by configure - do not modify!
5413 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
5414 prefix=$prefix
5415 LIBDIR=\$(DESTDIR)$libdir
5416 SHLIBDIR=\$(DESTDIR)$shlibdir
5417 INCDIR=\$(DESTDIR)$incdir
5418 BINDIR=\$(DESTDIR)$bindir
5419 DATADIR=\$(DESTDIR)$datadir
5420 DOCDIR=\$(DESTDIR)$docdir
5421 MANDIR=\$(DESTDIR)$mandir
5422 SRC_PATH=$source_path
5423 CC_IDENT=$cc_ident
5424 ARCH=$arch
5425 INTRINSICS=$intrinsics
5426 CC=$cc
5427 AS=$as
5428 OBJCC=$objcc
5429 LD=$ld
5430 DEPCC=$dep_cc
5431 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5432 DEPAS=$as
5433 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5434 X86ASM=$x86asmexe
5435 DEPX86ASM=$x86asmexe
5436 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
5437 AR=$ar
5438 ARFLAGS=$arflags
5439 AR_O=$ar_o
5440 RANLIB=$ranlib
5441 STRIP=$strip
5442 LN_S=$ln_s
5443 CPPFLAGS=$CPPFLAGS
5444 CFLAGS=$CFLAGS
5445 OBJCFLAGS=$OBJCFLAGS
5446 ASFLAGS=$ASFLAGS
5447 AS_C=$AS_C
5448 AS_O=$AS_O
5449 OBJCC_C=$OBJCC_C
5450 OBJCC_E=$OBJCC_E
5451 OBJCC_O=$OBJCC_O
5452 CC_C=$CC_C
5453 CC_E=$CC_E
5454 CC_O=$CC_O
5455 X86ASM_O=$X86ASM_O
5456 LD_O=$LD_O
5457 LD_LIB=$LD_LIB
5458 LD_PATH=$LD_PATH
5459 DLLTOOL=$dlltool
5460 LDFLAGS=$LDFLAGS
5461 LDEXEFLAGS=$LDEXEFLAGS
5462 LDSOFLAGS=$LDSOFLAGS
5463 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5464 STRIPFLAGS=$STRIPFLAGS
5465 X86ASMFLAGS=$X86ASMFLAGS
5466 LIBPREF=$LIBPREF
5467 LIBSUF=$LIBSUF
5468 LIBNAME=$LIBNAME
5469 SLIBPREF=$SLIBPREF
5470 SLIBSUF=$SLIBSUF
5471 EXESUF=$EXESUF
5472 EXTRA_VERSION=$extra_version
5473 CCDEP=$CCDEP
5474 CCDEP_FLAGS=$CCDEP_FLAGS
5475 ASDEP=$ASDEP
5476 ASDEP_FLAGS=$ASDEP_FLAGS
5477 X86ASMDEP=$X86ASMDEP
5478 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
5479 CC_DEPFLAGS=$CC_DEPFLAGS
5480 AS_DEPFLAGS=$AS_DEPFLAGS
5481 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
5482 HOSTCC=$host_cc
5483 HOSTLD=$host_ld
5484 HOSTCFLAGS=$host_cflags
5485 HOSTCPPFLAGS=$host_cppflags
5486 HOSTEXESUF=$HOSTEXESUF
5487 HOSTLDFLAGS=$host_ldflags
5488 HOSTEXTRALIBS=$host_extralibs
5489 DEPHOSTCC=$host_cc
5490 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5491 HOSTCCDEP=$HOSTCCDEP
5492 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5493 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5494 HOSTCC_C=$HOSTCC_C
5495 HOSTCC_O=$HOSTCC_O
5496 HOSTLD_O=$HOSTLD_O
5497 TARGET_EXEC=$target_exec $target_exec_args
5498 TARGET_PATH=$target_path
5499 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5500 CFLAGS-avplay=$sdl_cflags
5501 CFLAGS_HEADERS=$CFLAGS_HEADERS
5502 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5503 EXTRALIBS=$extralibs
5504 COMPAT_OBJS=$compat_objs
5505 INSTALL=install
5506 LIBTARGET=${LIBTARGET}
5507 SLIBNAME=${SLIBNAME}
5508 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5509 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5510 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5511 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5512 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5513 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5514 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5515 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5516 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
5517 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
5518 IGNORE_TESTS=$ignore_tests
5519 EOF
5520
5521 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> avbuild/config.mak' $LIBRARY_LIST
5522
5523 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5524     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> avbuild/config.mak
5525 done
5526
5527 cat > $TMPH <<EOF
5528 /* Automatically generated by configure - do not modify! */
5529 #ifndef LIBAV_CONFIG_H
5530 #define LIBAV_CONFIG_H
5531 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
5532 #define LIBAV_LICENSE "$(c_escape $license)"
5533 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5534 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5535 #define restrict $_restrict
5536 #define EXTERN_PREFIX "${extern_prefix}"
5537 #define EXTERN_ASM ${extern_prefix}
5538 #define SLIBSUF "$SLIBSUF"
5539 EOF
5540
5541 test -n "$malloc_prefix" &&
5542     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5543
5544 if enabled x86asm; then
5545     append config_files $TMPASM
5546     printf '' >$TMPASM
5547 fi
5548
5549 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5550
5551 print_config ARCH_   "$config_files" $ARCH_LIST
5552 print_config HAVE_   "$config_files" $HAVE_LIST
5553 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5554                                      $CONFIG_EXTRA      \
5555                                      $ALL_COMPONENTS    \
5556
5557 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
5558
5559 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5560 cp_if_changed $TMPH config.h
5561 touch avbuild/.config
5562
5563 enabled x86asm && cp_if_changed $TMPASM config.asm
5564
5565 cat > $TMPH <<EOF
5566 /* Generated by ffconf */
5567 #ifndef AVUTIL_AVCONFIG_H
5568 #define AVUTIL_AVCONFIG_H
5569 EOF
5570
5571 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5572
5573 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5574
5575 cp_if_changed $TMPH libavutil/avconfig.h
5576
5577 # generate the lists of enabled components
5578 print_enabled_components(){
5579     file=$1
5580     struct_name=$2
5581     name=$3
5582     shift 3
5583     echo "static const $struct_name * const $name[] = {" > $TMPH
5584     for c in $*; do
5585         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
5586     done
5587     echo "    NULL };" >> $TMPH
5588     cp_if_changed $TMPH $file
5589 }
5590
5591 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
5592 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
5593
5594 test -n "$WARNINGS" && printf "\n$WARNINGS"
5595
5596 # Settings for pkg-config files
5597
5598 cat > avbuild/config.sh <<EOF
5599 # Automatically generated by configure - do not modify!
5600 shared=$shared
5601 prefix=$prefix
5602 libdir=$libdir
5603 incdir=$incdir
5604 source_path=${source_path}
5605 LIBPREF=${LIBPREF}
5606 LIBSUF=${LIBSUF}
5607 extralibs_avutil="$avutil_extralibs"
5608 extralibs_avcodec="$avcodec_extralibs"
5609 extralibs_avformat="$avformat_extralibs"
5610 extralibs_avdevice="$avdevice_extralibs"
5611 extralibs_avfilter="$avfilter_extralibs"
5612 extralibs_avresample="$avresample_extralibs"
5613 extralibs_swscale="$swscale_extralibs"
5614 EOF
5615
5616 for lib in $LIBRARY_LIST; do
5617     lib_deps="$(eval echo \$${lib}_deps)"
5618     echo ${lib}_deps=\"$lib_deps\" >> avbuild/config.sh
5619 done