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

   1 #!/bin/sh
   2 #
   3 # Libav configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken Libav."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --prefix=PREFIX          install in PREFIX [$prefix_default]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
  91
  92 Licensing options:
  93   --enable-gpl             allow use of GPL code, the resulting libs
  94                            and binaries will be under GPL [no]
  95   --enable-version3        upgrade (L)GPL to version 3 [no]
  96   --enable-nonfree         allow use of nonfree code, the resulting libs
  97                            and binaries will be unredistributable [no]
  98
  99 Configuration options:
 100   --disable-static         do not build static libraries [no]
 101   --enable-shared          build shared libraries [no]
 102   --enable-small           optimize for size instead of speed
 103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
 104   --enable-gray            enable full grayscale support (slower color)
 105   --disable-swscale-alpha  disable alpha channel support in swscale
 106   --disable-all            disable building components, libraries and programs
 107
 108 Program options:
 109   --disable-programs       do not build command line programs
 110   --disable-avconv         disable avconv build
 111   --disable-avplay         disable avplay build
 112   --disable-avprobe        disable avprobe build
 113   --disable-avserver       deprecated, does nothing
 114
 115 Component options:
 116   --disable-doc            do not build documentation
 117   --disable-pod2man        do not build manual pages
 118   --disable-texi2html      do not build HTML documentation
 119   --disable-avdevice       disable libavdevice build
 120   --disable-avcodec        disable libavcodec build
 121   --disable-avformat       disable libavformat build
 122   --disable-avutil         disable libavutil build
 123   --disable-swscale        disable libswscale build
 124   --disable-avfilter       disable video filter support [no]
 125   --disable-avresample     disable libavresample build [no]
 126   --disable-pthreads       disable pthreads [auto]
 127   --disable-w32threads     disable Win32 threads [auto]
 128   --disable-network        disable network support [no]
 129   --disable-dct            disable DCT code
 130   --disable-error-resilience disable error resilience code
 131   --disable-lsp            disable LSP code
 132   --disable-lzo            disable LZO decoder code
 133   --disable-mdct           disable MDCT code
 134   --disable-rdft           disable RDFT code
 135   --disable-fft            disable FFT code
 136   --disable-faan           disable floating point AAN (I)DCT code
 137
 138 Individual component options:
 139   --disable-everything     disable all components listed below
 140   --disable-encoder=NAME   disable encoder NAME
 141   --enable-encoder=NAME    enable encoder NAME
 142   --disable-encoders       disable all encoders
 143   --disable-decoder=NAME   disable decoder NAME
 144   --enable-decoder=NAME    enable decoder NAME
 145   --disable-decoders       disable all decoders
 146   --disable-hwaccel=NAME   disable hwaccel NAME
 147   --enable-hwaccel=NAME    enable hwaccel NAME
 148   --disable-hwaccels       disable all hwaccels
 149   --disable-muxer=NAME     disable muxer NAME
 150   --enable-muxer=NAME      enable muxer NAME
 151   --disable-muxers         disable all muxers
 152   --disable-demuxer=NAME   disable demuxer NAME
 153   --enable-demuxer=NAME    enable demuxer NAME
 154   --disable-demuxers       disable all demuxers
 155   --enable-parser=NAME     enable parser NAME
 156   --disable-parser=NAME    disable parser NAME
 157   --disable-parsers        disable all parsers
 158   --enable-bsf=NAME        enable bitstream filter NAME
 159   --disable-bsf=NAME       disable bitstream filter NAME
 160   --disable-bsfs           disable all bitstream filters
 161   --enable-protocol=NAME   enable protocol NAME
 162   --disable-protocol=NAME  disable protocol NAME
 163   --disable-protocols      disable all protocols
 164   --enable-indev=NAME      enable input device NAME
 165   --disable-indev=NAME     disable input device NAME
 166   --disable-indevs         disable input devices
 167   --enable-outdev=NAME     enable output device NAME
 168   --disable-outdev=NAME    disable output device NAME
 169   --disable-outdevs        disable output devices
 170   --disable-devices        disable all devices
 171   --enable-filter=NAME     enable filter NAME
 172   --disable-filter=NAME    disable filter NAME
 173   --disable-filters        disable all filters
 174
 175 External library support:
 176
 177   Using any of the following switches will allow Libav to link to the
 178   corresponding external library. All the components depending on that library
 179   will become enabled, if all their other dependencies are met and they are not
 180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 181   libwavpack and allow the libwavpack encoder to be built, unless it is
 182   specifically disabled with --disable-encoder=libwavpack.
 183
 184   Note that only the system libraries are auto-detected. All the other external
 185   libraries must be explicitly enabled.
 186
 187   Also note that the following help text describes the purpose of the libraries
 188   themselves, not all their features will necessarily be usable by Libav.
 189
 190   --enable-avisynth          video frameserver
 191   --enable-avxsynth          Linux version of AviSynth
 192   --enable-bzlib             bzip2 compression [autodetect]
 193   --enable-frei0r            video filtering plugins
 194   --enable-gnutls            crypto
 195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
 196   --enable-libcdio           audio CD input
 197   --enable-libdc1394         IEEE 1394/Firewire camera input
 198   --enable-libdcadec         DCA audio decoding
 199   --enable-libfaac           AAC audio encoding
 200   --enable-libfdk-aac        AAC audio encoding/decoding
 201   --enable-libfontconfig     font configuration and management
 202   --enable-libfreetype       font rendering
 203   --enable-libgsm            GSM audio encoding/decoding
 204   --enable-libhdcd           HDCD decoding filter
 205   --enable-libilbc           ILBC audio encoding/decoding
 206   --enable-libjack           JACK audio sound server
 207   --enable-libkvazaar        HEVC video encoding
 208   --enable-libmp3lame        MP3 audio encoding
 209   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
 210   --enable-libopencore-amrwb AMR-WB audio decoding
 211   --enable-libopencv         computer vision
 212   --enable-libopenh264       H.264 video encoding/decoding
 213   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
 214   --enable-libopus           Opus audio encoding/decoding
 215   --enable-libpulse          Pulseaudio sound server
 216   --enable-librtmp           RTMP streaming
 217   --enable-libschroedinger   Dirac video encoding/decoding
 218   --enable-libsnappy         snappy compression
 219   --enable-libspeex          Speex audio encoding/decoding
 220   --enable-libtheora         Theora video encoding/decoding
 221   --enable-libtwolame        MP2 audio encoding
 222   --enable-libvo-aacenc      AAC audio encoding
 223   --enable-libvo-amrwbenc    AMR-WB audio encoding
 224   --enable-libvorbis         Vorbis audio encoding/decoding
 225   --enable-libvpx            VP* video encoding/decoding
 226   --enable-libwavpack        Wavpack audio encoding/decoding
 227   --enable-libwebp           WebP image encoding/decoding
 228   --enable-libx264           H.264 video encoding
 229   --enable-libx265           HEVC video encoding
 230   --enable-libxavs           Chinese AVS video encoding
 231   --enable-libxcb            X window system protocol communication
 232   --enable-libxcb-shm        X11 shm communication [auto]
 233   --enable-libxcb-xfixes     X11 mouse rendering [auto]
 234   --enable-libxvid           MPEG-4 ASP video encoding
 235   --enable-openssl           crypto
 236   --enable-zlib              compression [autodetect]
 237
 238   The following libraries provide various hardware acceleration features:
 239   --enable-cuda    Nvidia CUDA (dynamically linked)
 240   --enable-cuvid   Nvidia CUVID video decode acceleration
 241   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
 242   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
 243   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
 244   --enable-libnpp  Nvidia CUDA processing
 245   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
 246   --enable-nvenc   Nvidia video encoding
 247   --enable-omx     OpenMAX IL
 248   --enable-omx-rpi OpenMAX IL for Raspberry Pi
 249   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
 250   --enable-vda     Apple Video Decode Acceleration [auto]
 251   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
 252
 253 Toolchain options:
 254   --arch=ARCH              select architecture [$arch]
 255   --cpu=CPU                select the minimum required CPU (affects
 256                            instruction selection, may crash on older CPUs)
 257   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 258   --enable-cross-compile   assume a cross-compiler is used
 259   --sysroot=PATH           root of cross-build tree
 260   --sysinclude=PATH        location of cross-build system headers
 261   --target-os=OS           compiler targets OS [$target_os]
 262   --target-exec=CMD        command to run executables on target
 263   --target-path=DIR        path to view of build directory on target
 264   --target-samples=DIR     path to samples directory on target
 265   --toolchain=NAME         set tool defaults according to NAME
 266   --nm=NM                  use nm tool
 267   --ar=AR                  use archive tool AR [$ar_default]
 268   --as=AS                  use assembler AS [$as_default]
 269   --cc=CC                  use C compiler CC [$cc_default]
 270   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 271   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 272   --ld=LD                  use linker LD
 273   --x86asmexe=X86ASM       use x86 assembler X86ASM
 274   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 275   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 276   --host-cc=HOSTCC         use host C compiler HOSTCC
 277   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 278   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 279   --host-ld=HOSTLD         use host linker HOSTLD
 280   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 281   --host-libs=HLIBS        use libs HLIBS when linking for host
 282   --host-os=OS             compiler host OS [$target_os]
 283   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 284   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 285   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 286   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 287   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 288   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 289   --extra-version=STRING   version string suffix []
 290   --optflags=OPTFLAGS      override optimization-related compiler flags
 291   --enable-pic             build position-independent code
 292   --enable-thumb           compile for Thumb instruction set
 293   --enable-lto             use link-time optimization
 294   --env="ENV=override"     override the environment variables
 295
 296 Advanced options (experts only):
 297   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 298   --custom-allocator=NAME  use a supported custom allocator
 299   --disable-symver         disable symbol versioning
 300   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 301   --disable-safe-bitstream-reader
 302                            disable buffer boundary checking in bitreaders
 303                            (faster, but may crash)
 304   --enable-sram            allow use of on-chip SRAM
 305
 306 Optimization options (experts only):
 307   --disable-asm            disable all assembly optimizations
 308   --disable-altivec        disable AltiVec optimizations
 309   --disable-vsx            disable VSX optimizations
 310   --disable-power8         disable POWER8 optimizations
 311   --disable-amd3dnow       disable 3DNow! optimizations
 312   --disable-amd3dnowext    disable 3DNow! extended optimizations
 313   --disable-mmx            disable MMX optimizations
 314   --disable-mmxext         disable MMXEXT optimizations
 315   --disable-sse            disable SSE optimizations
 316   --disable-sse2           disable SSE2 optimizations
 317   --disable-sse3           disable SSE3 optimizations
 318   --disable-ssse3          disable SSSE3 optimizations
 319   --disable-sse4           disable SSE4 optimizations
 320   --disable-sse42          disable SSE4.2 optimizations
 321   --disable-avx            disable AVX optimizations
 322   --disable-xop            disable XOP optimizations
 323   --disable-fma3           disable FMA3 optimizations
 324   --disable-fma4           disable FMA4 optimizations
 325   --disable-avx2           disable AVX2 optimizations
 326   --disable-armv5te        disable armv5te optimizations
 327   --disable-armv6          disable armv6 optimizations
 328   --disable-armv6t2        disable armv6t2 optimizations
 329   --disable-vfp            disable VFP optimizations
 330   --disable-neon           disable NEON optimizations
 331   --disable-inline-asm     disable use of inline assembly
 332   --disable-x86asm         disable use of standalone x86 assembly
 333
 334 Developer options (useful when working on Libav itself):
 335   --disable-debug          disable debugging symbols
 336   --enable-debug=LEVEL     set the debug level [$debuglevel]
 337   --disable-optimizations  disable compiler optimizations
 338   --enable-extra-warnings  enable more compiler warnings
 339   --samples=PATH           location of test samples for FATE, if not set use
 340                            \$LIBAV_SAMPLES at make invocation time.
 341   --enable-neon-clobber-test check NEON registers for clobbering (should be
 342                            used only for debugging purposes)
 343   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 344                            should be used only for debugging purposes)
 345   --enable-random          randomly enable/disable components
 346   --disable-random
 347   --enable-random=LIST     randomly enable/disable specific components or
 348   --disable-random=LIST    component groups. LIST is a comma-separated list
 349                            of NAME[:PROB] entries where NAME is a component
 350                            (group) and PROB the probability associated with
 351                            NAME (default 0.5).
 352   --random-seed=VALUE      seed value for --enable/disable-random
 353   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 354                            (only applies to --disable-optimizations builds)
 355   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 356                            in the name) of tests whose result is ignored
 357
 358 NOTE: Object files are built at the place where configure is launched.
 359 EOF
 360   exit 0
 361 }
 362
 363 quotes='""'
 364
 365 log(){
 366     echo "$@" >> $logfile
 367 }
 368
 369 log_file(){
 370     log BEGIN $1
 371     i=1
 372     while read line; do
 373         printf '%5s   %s\n' "${i}" "${line}"
 374         i=$(($i+1))
 375     done < $1 >> $logfile
 376     log END $1
 377 }
 378
 379 echolog(){
 380     log "$@"
 381     echo "$@"
 382 }
 383
 384 warn(){
 385     log "WARNING: $*"
 386     WARNINGS="${WARNINGS}WARNING: $*\n"
 387 }
 388
 389 die(){
 390     echolog "$@"
 391     cat <<EOF
 392
 393 If you think configure made a mistake, make sure you are using the latest
 394 version from Git.  If the latest version fails, report the problem to the
 395 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 396 EOF
 397     if disabled logging; then
 398         cat <<EOF
 399 Rerun configure with logging enabled (do not use --disable-logging), and
 400 include the log this produces with your report.
 401 EOF
 402     else
 403         cat <<EOF
 404 Include the log file "$logfile" produced by configure as this will help
 405 solving the problem.
 406 EOF
 407     fi
 408     exit 1
 409 }
 410
 411 # Avoid locale weirdness, besides we really just want to translate ASCII.
 412 toupper(){
 413     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 414 }
 415
 416 tolower(){
 417     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 418 }
 419
 420 c_escape(){
 421     echo "$*" | sed 's/["\\]/\\\0/g'
 422 }
 423
 424 sh_quote(){
 425     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 426     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 427     echo "$v"
 428 }
 429
 430 cleanws(){
 431     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 432 }
 433
 434 filter(){
 435     pat=$1
 436     shift
 437     for v; do
 438         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 439     done
 440 }
 441
 442 filter_out(){
 443     pat=$1
 444     shift
 445     for v; do
 446         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 447     done
 448 }
 449
 450 map(){
 451     m=$1
 452     shift
 453     for v; do eval $m; done
 454 }
 455
 456 add_suffix(){
 457     suffix=$1
 458     shift
 459     for v; do echo ${v}${suffix}; done
 460 }
 461
 462 set_all(){
 463     value=$1
 464     shift
 465     for var in $*; do
 466         eval $var=$value
 467     done
 468 }
 469
 470 set_weak(){
 471     value=$1
 472     shift
 473     for var; do
 474         eval : \${$var:=$value}
 475     done
 476 }
 477
 478 sanitize_var_name(){
 479     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 480 }
 481
 482 set_sanitized(){
 483     var=$1
 484     shift
 485     eval $(sanitize_var_name "$var")='$*'
 486 }
 487
 488 get_sanitized(){
 489     eval echo \$$(sanitize_var_name "$1")
 490 }
 491
 492 pushvar(){
 493     for pvar in $*; do
 494         eval level=\${${pvar}_level:=0}
 495         eval ${pvar}_${level}="\$$pvar"
 496         eval ${pvar}_level=$(($level+1))
 497     done
 498 }
 499
 500 popvar(){
 501     for pvar in $*; do
 502         eval level=\${${pvar}_level:-0}
 503         test $level = 0 && continue
 504         eval level=$(($level-1))
 505         eval $pvar="\${${pvar}_${level}}"
 506         eval ${pvar}_level=$level
 507         eval unset ${pvar}_${level}
 508     done
 509 }
 510
 511 enable(){
 512     set_all yes $*
 513 }
 514
 515 disable(){
 516     set_all no $*
 517 }
 518
 519 enable_weak(){
 520     set_weak yes $*
 521 }
 522
 523 disable_weak(){
 524     set_weak no $*
 525 }
 526
 527 enable_sanitized(){
 528     for var; do
 529         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 530     done
 531 }
 532
 533 disable_sanitized(){
 534     for var; do
 535         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 536     done
 537 }
 538
 539 do_enable_deep(){
 540     for var; do
 541         enabled $var && continue
 542         eval sel="\$${var}_select"
 543         eval sgs="\$${var}_suggest"
 544         pushvar var sgs
 545         enable_deep $sel
 546         popvar sgs
 547         enable_deep_weak $sgs
 548         popvar var
 549     done
 550 }
 551
 552 enable_deep(){
 553     do_enable_deep $*
 554     enable $*
 555 }
 556
 557 enable_deep_weak(){
 558     for var; do
 559         disabled $var && continue
 560         pushvar var
 561         do_enable_deep $var
 562         popvar var
 563         enable_weak $var
 564     done
 565 }
 566
 567 enabled(){
 568     test "${1#!}" = "$1" && op== || op=!=
 569     eval test "x\$${1#!}" $op "xyes"
 570 }
 571
 572 disabled(){
 573     test "${1#!}" = "$1" && op== || op=!=
 574     eval test "x\$${1#!}" $op "xno"
 575 }
 576
 577 enabled_all(){
 578     for opt; do
 579         enabled $opt || return 1
 580     done
 581 }
 582
 583 disabled_all(){
 584     for opt; do
 585         disabled $opt || return 1
 586     done
 587 }
 588
 589 enabled_any(){
 590     for opt; do
 591         enabled $opt && return 0
 592     done
 593 }
 594
 595 disabled_any(){
 596     for opt; do
 597         disabled $opt && return 0
 598     done
 599     return 1
 600 }
 601
 602 set_default(){
 603     for opt; do
 604         eval : \${$opt:=\$${opt}_default}
 605     done
 606 }
 607
 608 is_in(){
 609     value=$1
 610     shift
 611     for var in $*; do
 612         [ $var = $value ] && return 0
 613     done
 614     return 1
 615 }
 616
 617 check_deps(){
 618     for cfg; do
 619         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 620         disabled ${cfg}_checking && continue
 621         enable ${cfg}_checking
 622
 623         eval dep_all="\$${cfg}_deps"
 624         eval dep_any="\$${cfg}_deps_any"
 625         eval dep_con="\$${cfg}_conflict"
 626         eval dep_sel="\$${cfg}_select"
 627         eval dep_sgs="\$${cfg}_suggest"
 628         eval dep_ifa="\$${cfg}_if"
 629         eval dep_ifn="\$${cfg}_if_any"
 630
 631         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 632         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 633         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 634
 635         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 636         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 637         enabled_all  $dep_all || disable $cfg
 638         enabled_any  $dep_any || disable $cfg
 639         disabled_all $dep_con || disable $cfg
 640         disabled_any $dep_sel && disable $cfg
 641
 642         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 643
 644         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 645             # filter out library deps, these do not belong in extralibs
 646             is_in $dep $LIBRARY_LIST && continue
 647             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 648         done
 649
 650         disable ${cfg}_checking
 651     done
 652 }
 653
 654 print_config(){
 655     pfx=$1
 656     files=$2
 657     shift 2
 658     map 'eval echo "$v \${$v:-no}"' "$@" |
 659     awk "BEGIN { split(\"$files\", files) }
 660         {
 661             c = \"$pfx\" toupper(\$1);
 662             v = \$2;
 663             sub(/yes/, 1, v);
 664             sub(/no/,  0, v);
 665             for (f in files) {
 666                 file = files[f];
 667                 if (file ~ /\\.h\$/) {
 668                     printf(\"#define %s %d\\n\", c, v) >>file;
 669                 } else if (file ~ /\\.asm\$/) {
 670                     printf(\"%%define %s %d\\n\", c, v) >>file;
 671                 } else if (file ~ /\\.mak\$/) {
 672                     n = -v ? \"\" : \"!\";
 673                     printf(\"%s%s=yes\\n\", n, c) >>file;
 674                 }
 675             }
 676         }"
 677 }
 678
 679 print_enabled(){
 680     suf=$1
 681     shift
 682     for v; do
 683         enabled $v && printf "%s\n" ${v%$suf}
 684     done
 685 }
 686
 687 append(){
 688     var=$1
 689     shift
 690     eval "$var=\"\$$var $*\""
 691 }
 692
 693 prepend(){
 694     var=$1
 695     shift
 696     eval "$var=\"$* \$$var\""
 697 }
 698
 699 unique(){
 700     var=$1
 701     uniq_list=""
 702     for tok in $(eval echo \$$var); do
 703         uniq_list="$(filter_out $tok $uniq_list) $tok"
 704     done
 705     eval "$var=\"${uniq_list}\""
 706 }
 707
 708 resolve(){
 709     var=$1
 710     tmpvar=
 711     for entry in $(eval echo \$$var); do
 712         tmpvar="$tmpvar $(eval echo \$${entry})"
 713     done
 714     eval "$var=\"${tmpvar}\""
 715 }
 716
 717 add_cppflags(){
 718     append CPPFLAGS "$@"
 719 }
 720
 721 add_cflags(){
 722     append CFLAGS $($cflags_filter "$@")
 723 }
 724
 725 add_cflags_headers(){
 726     append CFLAGS_HEADERS $($cflags_filter "$@")
 727 }
 728
 729 add_asflags(){
 730     append ASFLAGS $($asflags_filter "$@")
 731 }
 732
 733 add_objcflags(){
 734     append OBJCFLAGS $($objcflags_filter "$@")
 735 }
 736
 737 add_ldflags(){
 738     append LDFLAGS $($ldflags_filter "$@")
 739 }
 740
 741 add_ldexeflags(){
 742     append LDEXEFLAGS $($ldflags_filter "$@")
 743 }
 744
 745 add_ldsoflags(){
 746     append LDSOFLAGS $($ldflags_filter "$@")
 747 }
 748
 749 add_stripflags(){
 750     append STRIPFLAGS "$@"
 751 }
 752
 753 add_extralibs(){
 754     prepend extralibs $($ldflags_filter "$@")
 755 }
 756
 757 add_host_cppflags(){
 758     append host_cppflags "$@"
 759 }
 760
 761 add_host_cflags(){
 762     append host_cflags $($host_cflags_filter "$@")
 763 }
 764
 765 add_host_ldflags(){
 766     append host_ldflags $($host_ldflags_filter "$@")
 767 }
 768
 769 add_compat(){
 770     append compat_objs $1
 771     shift
 772     map 'add_cppflags -D$v' "$@"
 773 }
 774
 775 check_cmd(){
 776     log "$@"
 777     "$@" >> $logfile 2>&1
 778 }
 779
 780 cc_o(){
 781     eval printf '%s\\n' $CC_O
 782 }
 783
 784 cc_e(){
 785     eval printf '%s\\n' $CC_E
 786 }
 787
 788 check_cc(){
 789     log check_cc "$@"
 790     cat > $TMPC
 791     log_file $TMPC
 792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 793 }
 794
 795 check_objcc(){
 796     log check_objcc "$@"
 797     cat > $TMPC
 798     log_file $TMPC
 799     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
 800 }
 801
 802 check_cpp(){
 803     log check_cpp "$@"
 804     cat > $TMPC
 805     log_file $TMPC
 806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 807 }
 808
 809 as_o(){
 810     eval printf '%s\\n' $AS_O
 811 }
 812
 813 check_as(){
 814     log check_as "$@"
 815     cat > $TMPS
 816     log_file $TMPS
 817     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 818 }
 819
 820 check_inline_asm(){
 821     log check_inline_asm "$@"
 822     name="$1"
 823     code="$2"
 824     shift 2
 825     disable $name
 826     check_cc "$@" <<EOF && enable $name
 827 void foo(void){ __asm__ volatile($code); }
 828 EOF
 829 }
 830
 831 check_insn(){
 832     log check_insn "$@"
 833     check_inline_asm ${1}_inline "\"$2\""
 834     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 835 }
 836
 837 check_x86asm(){
 838     log check_x86asm "$@"
 839     echo "$1" > $TMPS
 840     log_file $TMPS
 841     shift 1
 842     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
 843 }
 844
 845 ld_o(){
 846     eval printf '%s\\n' $LD_O
 847 }
 848
 849 check_ld(){
 850     log check_ld "$@"
 851     flags=$(filter_out '-l*' "$@")
 852     libs=$(filter '-l*' "$@")
 853     check_cc $($cflags_filter $flags) || return
 854     flags=$($ldflags_filter $flags)
 855     libs=$($ldflags_filter $libs)
 856     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 857 }
 858
 859 print_include(){
 860     hdr=$1
 861     test "${hdr%.h}" = "${hdr}" &&
 862         echo "#include $hdr"    ||
 863         echo "#include <$hdr>"
 864 }
 865
 866 check_code(){
 867     log check_code "$@"
 868     check=$1
 869     headers=$2
 870     code=$3
 871     shift 3
 872     {
 873         for hdr in $headers; do
 874             print_include $hdr
 875         done
 876         echo "int main(void) { $code; return 0; }"
 877     } | check_$check "$@"
 878 }
 879
 880 check_cppflags(){
 881     log check_cppflags "$@"
 882     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
 883 #include <stdlib.h>;
 884 EOF
 885 }
 886
 887 test_cflags(){
 888     log test_cflags "$@"
 889     set -- $($cflags_filter "$@")
 890     check_cc "$@" <<EOF
 891 int x;
 892 EOF
 893 }
 894
 895 check_cflags(){
 896     log check_cflags "$@"
 897     test_cflags "$@" && add_cflags "$@"
 898 }
 899
 900 test_objcflags(){
 901     log test_objcflags "$@"
 902     set -- $($objcflags_filter "$@")
 903     check_objcc "$@" <<EOF
 904 int x;
 905 EOF
 906 }
 907
 908 check_objcflags(){
 909     log check_objcflags "$@"
 910     test_objcflags "$@" && add_objcflags "$@"
 911 }
 912
 913 test_ldflags(){
 914     log test_ldflags "$@"
 915     check_ld "$@" <<EOF
 916 int main(void){ return 0; }
 917 EOF
 918 }
 919
 920 check_ldflags(){
 921     log check_ldflags "$@"
 922     test_ldflags "$@" && add_ldflags "$@"
 923 }
 924
 925 test_stripflags(){
 926     log test_stripflags "$@"
 927     # call check_cc to get a fresh TMPO
 928     check_cc <<EOF
 929 int main(void) { return 0; }
 930 EOF
 931     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 932 }
 933
 934 check_stripflags(){
 935     log check_stripflags "$@"
 936     test_stripflags "$@" && add_stripflags "$@"
 937 }
 938
 939 check_header(){
 940     log check_header "$@"
 941     header=$1
 942     shift
 943     disable_sanitized $header
 944     check_cpp "$@" <<EOF && enable_sanitized $header
 945 #include <$header>
 946 int x;
 947 EOF
 948 }
 949
 950 check_func(){
 951     log check_func "$@"
 952     func=$1
 953     shift
 954     disable $func
 955     check_ld "$@" <<EOF && enable $func
 956 extern int $func();
 957 int main(void){ $func(); }
 958 EOF
 959 }
 960
 961 check_mathfunc(){
 962     log check_mathfunc "$@"
 963     func=$1
 964     narg=$2
 965     shift 2
 966     test $narg = 2 && args="f, g" || args="f"
 967     disable $func
 968     check_ld "$@" <<EOF && enable $func
 969 #include <math.h>
 970 float foo(float f, float g) { return $func($args); }
 971 int main(void){ return 0; }
 972 EOF
 973 }
 974
 975 check_func_headers(){
 976     log check_func_headers "$@"
 977     headers=$1
 978     funcs=$2
 979     shift 2
 980     {
 981         for hdr in $headers; do
 982             print_include $hdr
 983         done
 984         for func in $funcs; do
 985             echo "long check_$func(void) { return (long) $func; }"
 986         done
 987         echo "int main(void) { return 0; }"
 988     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
 989 }
 990
 991 check_cpp_condition(){
 992     log check_cpp_condition "$@"
 993     header=$1
 994     condition=$2
 995     shift 2
 996     check_cpp "$@" <<EOF
 997 #include <$header>
 998 #if !($condition)
 999 #error "unsatisfied condition: $condition"
1000 #endif
1001 EOF
1002 }
1003
1004 test_cflags_cpp(){
1005     log test_cflags_cpp "$@"
1006     flags=$1
1007     condition=$2
1008     shift 2
1009     set -- $($cflags_filter "$flags")
1010     check_cpp "$@" <<EOF
1011 #if !($condition)
1012 #error "unsatisfied condition: $condition"
1013 #endif
1014 EOF
1015 }
1016
1017 check_lib(){
1018     log check_lib "$@"
1019     name="$1"
1020     headers="$2"
1021     funcs="$3"
1022     shift 3
1023     disable $name
1024     check_func_headers "$headers" "$funcs" "$@" &&
1025         enable $name && eval ${name}_extralibs="\$@"
1026 }
1027
1028 test_pkg_config(){
1029     log test_pkg_config "$@"
1030     name="$1"
1031     pkg_version="$2"
1032     pkg="${2%% *}"
1033     headers="$3"
1034     funcs="$4"
1035     shift 4
1036     disable $name
1037     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1038     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1039     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1040     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1041         enable $name &&
1042         set_sanitized "${name}_cflags"    $pkg_cflags &&
1043         set_sanitized "${name}_extralibs" $pkg_libs
1044 }
1045
1046 check_pkg_config(){
1047     log check_pkg_config "$@"
1048     name="$1"
1049     test_pkg_config "$@" &&
1050         eval add_cflags \$${name}_cflags
1051 }
1052
1053 check_exec(){
1054     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1055 }
1056
1057 check_exec_crash(){
1058     log check_exec_crash "$@"
1059     code=$(cat)
1060
1061     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1062     # are safe but may not be available everywhere.  Thus we use
1063     # raise(SIGTERM) instead.  The check is run in a subshell so we
1064     # can redirect the "Terminated" message from the shell.  SIGBUS
1065     # is not defined by standard C so it is used conditionally.
1066
1067     (check_exec "$@") >> $logfile 2>&1 <<EOF
1068 #include <signal.h>
1069 static void sighandler(int sig){
1070     raise(SIGTERM);
1071 }
1072 int foo(void){
1073     $code
1074 }
1075 int (*func_ptr)(void) = foo;
1076 int main(void){
1077     signal(SIGILL, sighandler);
1078     signal(SIGFPE, sighandler);
1079     signal(SIGSEGV, sighandler);
1080 #ifdef SIGBUS
1081     signal(SIGBUS, sighandler);
1082 #endif
1083     return func_ptr();
1084 }
1085 EOF
1086 }
1087
1088 check_type(){
1089     log check_type "$@"
1090     headers=$1
1091     type=$2
1092     shift 2
1093     disable_sanitized "$type"
1094     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1095 }
1096
1097 check_struct(){
1098     log check_struct "$@"
1099     headers=$1
1100     struct=$2
1101     member=$3
1102     shift 3
1103     disable_sanitized "${struct}_${member}"
1104     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1105         enable_sanitized "${struct}_${member}"
1106 }
1107
1108 check_builtin(){
1109     log check_builtin "$@"
1110     name=$1
1111     headers=$2
1112     builtin=$3
1113     shift 3
1114     disable "$name"
1115     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1116 }
1117
1118 check_compile_assert(){
1119     log check_compile_assert "$@"
1120     name=$1
1121     headers=$2
1122     condition=$3
1123     shift 3
1124     disable "$name"
1125     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1126 }
1127
1128 require(){
1129     log require "$@"
1130     name_version="$1"
1131     name="${1%% *}"
1132     headers="$2"
1133     func="$3"
1134     shift 3
1135     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1136 }
1137
1138 require_header(){
1139     log require "$@"
1140     header="$1"
1141     shift
1142     check_header "$header" "$@" || die "ERROR: $header not found"
1143 }
1144
1145 require_cpp_condition(){
1146     log require "$@"
1147     header="$1"
1148     condition="$2"
1149     shift 2
1150     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1151 }
1152
1153 require_pkg_config(){
1154     log require_pkg_config "$@"
1155     pkg_version="$2"
1156     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1157 }
1158
1159 hostcc_e(){
1160     eval printf '%s\\n' $HOSTCC_E
1161 }
1162
1163 hostcc_o(){
1164     eval printf '%s\\n' $HOSTCC_O
1165 }
1166
1167 check_host_cc(){
1168     log check_host_cc "$@"
1169     cat > $TMPC
1170     log_file $TMPC
1171     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1172 }
1173
1174 check_host_cpp(){
1175     log check_host_cpp "$@"
1176     cat > $TMPC
1177     log_file $TMPC
1178     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1179 }
1180
1181 check_host_cppflags(){
1182     log check_host_cppflags "$@"
1183     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1184 #include <stdlib.h>;
1185 EOF
1186 }
1187
1188 check_host_cflags(){
1189     log check_host_cflags "$@"
1190     set -- $($host_cflags_filter "$@")
1191     check_host_cc "$@" <<EOF && append host_cflags "$@"
1192 int x;
1193 EOF
1194 }
1195
1196 check_host_cpp_condition(){
1197     log check_host_cpp_condition "$@"
1198     header=$1
1199     condition=$2
1200     shift 2
1201     check_host_cpp "$@" <<EOF
1202 #include <$header>
1203 #if !($condition)
1204 #error "unsatisfied condition: $condition"
1205 #endif
1206 EOF
1207 }
1208
1209 apply(){
1210     file=$1
1211     shift
1212     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1213 }
1214
1215 cp_if_changed(){
1216     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1217     mkdir -p "$(dirname $2)"
1218     cp -f "$1" "$2"
1219 }
1220
1221 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1222 # system-dependent things.
1223
1224 AVCODEC_COMPONENTS="
1225     bsfs
1226     decoders
1227     encoders
1228     hwaccels
1229     parsers
1230 "
1231
1232 AVDEVICE_COMPONENTS="
1233     indevs
1234     outdevs
1235 "
1236 AVFILTER_COMPONENTS="
1237     filters
1238 "
1239 AVFORMAT_COMPONENTS="
1240     demuxers
1241     muxers
1242     protocols
1243 "
1244
1245 AVRESAMPLE_COMPONENTS=""
1246 AVUTIL_COMPONENTS=""
1247
1248 COMPONENT_LIST="
1249     $AVCODEC_COMPONENTS
1250     $AVDEVICE_COMPONENTS
1251     $AVFILTER_COMPONENTS
1252     $AVFORMAT_COMPONENTS
1253     $AVRESAMPLE_COMPONENTS
1254     $AVUTIL_COMPONENTS
1255 "
1256
1257 EXAMPLE_LIST="
1258     decode_audio_example
1259     decode_video_example
1260     encode_audio_example
1261     encode_video_example
1262     filter_audio_example
1263     metadata_example
1264     output_example
1265     qsvdec_example
1266     transcode_aac_example
1267 "
1268
1269 # catchall list of things that require external libs to link
1270 EXTRALIBS_LIST="
1271     cpu_init
1272     cws2fws
1273 "
1274
1275 HWACCEL_LIBRARY_NONFREE_LIST="
1276     cuda
1277     cuvid
1278     libnpp
1279 "
1280 HWACCEL_LIBRARY_LIST="
1281     $HWACCEL_LIBRARY_NONFREE_LIST
1282     d3d11va
1283     dxva2
1284     libmfx
1285     mmal
1286     nvenc
1287     omx
1288     vaapi
1289     vda
1290     vdpau
1291 "
1292
1293 EXTERNAL_LIBRARY_GPL_LIST="
1294     libcdio
1295     libx264
1296     libx265
1297     libxavs
1298     libxvid
1299 "
1300
1301 EXTERNAL_LIBRARY_NONFREE_LIST="
1302     libfaac
1303     libfdk_aac
1304     openssl
1305 "
1306
1307 EXTERNAL_LIBRARY_VERSION3_LIST="
1308     libopencore_amrnb
1309     libopencore_amrwb
1310     libvo_aacenc
1311     libvo_amrwbenc
1312 "
1313
1314 EXTERNAL_LIBRARY_LIST="
1315     $EXTERNAL_LIBRARY_GPL_LIST
1316     $EXTERNAL_LIBRARY_NONFREE_LIST
1317     $EXTERNAL_LIBRARY_VERSION3_LIST
1318     avisynth
1319     avxsynth
1320     frei0r
1321     gnutls
1322     libbs2b
1323     libdc1394
1324     libdcadec
1325     libfontconfig
1326     libfreetype
1327     libgsm
1328     libhdcd
1329     libilbc
1330     libjack
1331     libkvazaar
1332     libmp3lame
1333     libopencv
1334     libopenh264
1335     libopenjpeg
1336     libopus
1337     libpulse
1338     librtmp
1339     libschroedinger
1340     libsnappy
1341     libspeex
1342     libtheora
1343     libtwolame
1344     libvorbis
1345     libvpx
1346     libwavpack
1347     libwebp
1348     libxcb
1349     libxcb_shm
1350     libxcb_xfixes
1351 "
1352
1353 SYSTEM_LIBRARY_LIST="
1354     bzlib
1355     zlib
1356 "
1357
1358 FEATURE_LIST="
1359     gray
1360     hardcoded_tables
1361     omx_rpi
1362     runtime_cpudetect
1363     safe_bitstream_reader
1364     shared
1365     small
1366     sram
1367     static
1368     swscale_alpha
1369 "
1370
1371 LIBRARY_LIST="
1372     avcodec
1373     avdevice
1374     avfilter
1375     avformat
1376     avresample
1377     avutil
1378     swscale
1379 "
1380
1381 LICENSE_LIST="
1382     gpl
1383     nonfree
1384     version3
1385 "
1386
1387 PROGRAM_LIST="
1388     avconv
1389     avplay
1390     avprobe
1391 "
1392
1393 SUBSYSTEM_LIST="
1394     dct
1395     doc
1396     error_resilience
1397     faan
1398     fft
1399     lsp
1400     lzo
1401     mdct
1402     network
1403     rdft
1404 "
1405
1406 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1407 CONFIG_LIST="
1408     $EXAMPLE_LIST
1409     $EXTERNAL_LIBRARY_LIST
1410     $HWACCEL_LIBRARY_LIST
1411     $FEATURE_LIST
1412     $LICENSE_LIST
1413     $LIBRARY_LIST
1414     $PROGRAM_LIST
1415     $SUBSYSTEM_LIST
1416     $SYSTEM_LIBRARY_LIST
1417     neon_clobber_test
1418     pic
1419     pod2man
1420     texi2html
1421     thumb
1422     valgrind_backtrace
1423     xmm_clobber_test
1424     $COMPONENT_LIST
1425 "
1426
1427 THREADS_LIST="
1428     pthreads
1429     w32threads
1430 "
1431
1432 ATOMICS_LIST="
1433     atomics_gcc
1434     atomics_suncc
1435     atomics_win32
1436 "
1437
1438 ARCH_LIST="
1439     aarch64
1440     alpha
1441     arm
1442     avr32
1443     avr32_ap
1444     avr32_uc
1445     bfin
1446     ia64
1447     m68k
1448     mips
1449     mips64
1450     parisc
1451     ppc
1452     ppc64
1453     s390
1454     sh4
1455     sparc
1456     sparc64
1457     tilegx
1458     tilepro
1459     tomi
1460     x86
1461     x86_32
1462     x86_64
1463 "
1464
1465 ARCH_EXT_LIST_ARM="
1466     armv5te
1467     armv6
1468     armv6t2
1469     armv8
1470     neon
1471     vfp
1472     vfpv3
1473 "
1474
1475 ARCH_EXT_LIST_X86_SIMD="
1476     amd3dnow
1477     amd3dnowext
1478     avx
1479     avx2
1480     fma3
1481     fma4
1482     mmx
1483     mmxext
1484     sse
1485     sse2
1486     sse3
1487     sse4
1488     sse42
1489     ssse3
1490     xop
1491 "
1492
1493 ARCH_EXT_LIST_PPC="
1494     altivec
1495     dcbzl
1496     ldbrx
1497     power8
1498     ppc4xx
1499     vsx
1500 "
1501
1502 ARCH_EXT_LIST_X86="
1503     $ARCH_EXT_LIST_X86_SIMD
1504     cpunop
1505     i686
1506 "
1507
1508 ARCH_EXT_LIST_MIPS="
1509     loongson
1510     mips32r1
1511     mips64r1
1512     mips32r2
1513     mips64r2
1514     mips32r6
1515     mips64r6
1516 "
1517
1518 ARCH_EXT_LIST="
1519     $ARCH_EXT_LIST_ARM
1520     $ARCH_EXT_LIST_MIPS
1521     $ARCH_EXT_LIST_PPC
1522     $ARCH_EXT_LIST_X86
1523     vis
1524 "
1525
1526 ARCH_FEATURES="
1527     aligned_stack
1528     fast_64bit
1529     fast_clz
1530     fast_cmov
1531     local_aligned_8
1532     local_aligned_16
1533     local_aligned_32
1534     simd_align_16
1535     simd_align_32
1536 "
1537
1538 BUILTIN_LIST="
1539     atomic_cas_ptr
1540     machine_rw_barrier
1541     MemoryBarrier
1542     mm_empty
1543     rdtsc
1544     sem_timedwait
1545     sync_val_compare_and_swap
1546 "
1547 HAVE_LIST_CMDLINE="
1548     inline_asm
1549     symver
1550     x86asm
1551 "
1552
1553 HAVE_LIST_PUB="
1554     bigendian
1555     fast_unaligned
1556 "
1557
1558 HEADERS_LIST="
1559     AVFoundation_AVFoundation_h
1560     alsa_asoundlib_h
1561     arpa_inet_h
1562     cdio_paranoia_h
1563     cdio_paranoia_paranoia_h
1564     d3d11_h
1565     dispatch_dispatch_h
1566     dev_bktr_ioctl_bt848_h
1567     dev_bktr_ioctl_meteor_h
1568     dev_ic_bt8xx_h
1569     dev_video_bktr_ioctl_bt848_h
1570     dev_video_meteor_ioctl_meteor_h
1571     direct_h
1572     dlfcn_h
1573     dxgidebug_h
1574     dxva_h
1575     gsm_h
1576     io_h
1577     mach_mach_time_h
1578     machine_ioctl_bt848_h
1579     machine_ioctl_meteor_h
1580     malloc_h
1581     poll_h
1582     sndio_h
1583     soundcard_h
1584     stdatomic_h
1585     sys_mman_h
1586     sys_param_h
1587     sys_resource_h
1588     sys_select_h
1589     sys_soundcard_h
1590     sys_time_h
1591     sys_un_h
1592     sys_videoio_h
1593     unistd_h
1594     valgrind_valgrind_h
1595     windows_h
1596     winsock2_h
1597 "
1598
1599 INTRINSICS_LIST="
1600     intrinsics_neon
1601 "
1602
1603 MATH_FUNCS="
1604     atanf
1605     atan2f
1606     cbrtf
1607     cosf
1608     exp2
1609     exp2f
1610     expf
1611     isinf
1612     isnan
1613     ldexpf
1614     llrint
1615     llrintf
1616     log2
1617     log2f
1618     log10f
1619     lrint
1620     lrintf
1621     powf
1622     rint
1623     round
1624     roundf
1625     sinf
1626     trunc
1627     truncf
1628 "
1629
1630 SYSTEM_FUNCS="
1631     aligned_malloc
1632     clock_gettime
1633     closesocket
1634     CommandLineToArgvW
1635     CoTaskMemFree
1636     CryptGenRandom
1637     fcntl
1638     flt_lim
1639     fork
1640     getaddrinfo
1641     gethrtime
1642     getopt
1643     GetProcessAffinityMask
1644     GetProcessMemoryInfo
1645     GetProcessTimes
1646     getrusage
1647     GetSystemTimeAsFileTime
1648     gettimeofday
1649     gmtime_r
1650     inet_aton
1651     isatty
1652     LoadLibrary
1653     localtime_r
1654     mach_absolute_time
1655     MapViewOfFile
1656     memalign
1657     mkstemp
1658     mmap
1659     mprotect
1660     nanosleep
1661     posix_memalign
1662     sched_getaffinity
1663     SetConsoleTextAttribute
1664     setmode
1665     setrlimit
1666     Sleep
1667     strerror_r
1668     sysconf
1669     sysctl
1670     usleep
1671     VirtualAlloc
1672 "
1673
1674 TOOLCHAIN_FEATURES="
1675     as_arch_directive
1676     as_fpu_directive
1677     as_func
1678     as_object_arch
1679     asm_mod_q
1680     attribute_may_alias
1681     attribute_packed
1682     blocks_extension
1683     ebp_available
1684     ebx_available
1685     gnu_as
1686     ibm_asm
1687     inline_asm_labels
1688     pragma_deprecated
1689     symver_asm_label
1690     symver_gnu_asm
1691     vfp_args
1692     xform_asm
1693     xmm_clobbers
1694 "
1695
1696 TYPES_LIST="
1697     CONDITION_VARIABLE_Ptr
1698     CUVIDDECODECREATEINFO_bitDepthMinus8
1699     socklen_t
1700     struct_addrinfo
1701     struct_group_source_req
1702     struct_ip_mreq_source
1703     struct_ipv6_mreq
1704     struct_pollfd
1705     struct_rusage_ru_maxrss
1706     struct_sockaddr_in6
1707     struct_sockaddr_sa_len
1708     struct_sockaddr_storage
1709     struct_v4l2_frmivalenum_discrete
1710 "
1711
1712 HAVE_LIST="
1713     $ARCH_EXT_LIST
1714     $(add_suffix _external $ARCH_EXT_LIST)
1715     $(add_suffix _inline   $ARCH_EXT_LIST)
1716     $ARCH_FEATURES
1717     $BUILTIN_LIST
1718     $HAVE_LIST_CMDLINE
1719     $HAVE_LIST_PUB
1720     $HEADERS_LIST
1721     $INTRINSICS_LIST
1722     $MATH_FUNCS
1723     $SYSTEM_FUNCS
1724     $THREADS_LIST
1725     $TOOLCHAIN_FEATURES
1726     $TYPES_LIST
1727     dos_paths
1728     libc_msvcrt
1729     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1730     sdl
1731     section_data_rel_ro
1732     threads
1733     uwp
1734     vaapi_drm
1735     vaapi_x11
1736     vdpau_x11
1737 "
1738
1739 # options emitted with CONFIG_ prefix but not available on the command line
1740 CONFIG_EXTRA="
1741     aandcttables
1742     ac3dsp
1743     adts_header
1744     audio_frame_queue
1745     audiodsp
1746     blockdsp
1747     bswapdsp
1748     cabac
1749     cbs
1750     cbs_h264
1751     cbs_h265
1752     cbs_mpeg2
1753     dirac_parse
1754     dvprofile
1755     faandct
1756     faanidct
1757     fdctdsp
1758     flacdsp
1759     fmtconvert
1760     g722dsp
1761     gmp
1762     golomb
1763     gplv3
1764     h263dsp
1765     h264chroma
1766     h264dsp
1767     h264parse
1768     h264pred
1769     h264qpel
1770     hevcparse
1771     hpeldsp
1772     huffman
1773     huffyuvdsp
1774     huffyuvencdsp
1775     idctdsp
1776     iirfilter
1777     imdct15
1778     intrax8
1779     iso_media
1780     ividsp
1781     jpegtables
1782     lgplv3
1783     libx262
1784     libxcb_shape
1785     lpc
1786     lzf
1787     me_cmp
1788     mpeg_er
1789     mpegaudio
1790     mpegaudiodsp
1791     mpegaudioheader
1792     mpegvideo
1793     mpegvideoenc
1794     mss34dsp
1795     pixblockdsp
1796     qpeldsp
1797     qsv
1798     qsvdec
1799     qsvenc
1800     qsvvpp
1801     rangecoder
1802     riffdec
1803     riffenc
1804     rtpdec
1805     rtpenc_chain
1806     rv34dsp
1807     sinewin
1808     snappy
1809     srtp
1810     startcode
1811     texturedsp
1812     texturedspenc
1813     tpeldsp
1814     vaapi_encode
1815     vc1dsp
1816     videodsp
1817     vp3dsp
1818     vp56dsp
1819     vp8dsp
1820     wma_freqs
1821     wmv2dsp
1822 "
1823
1824 CMDLINE_SELECT="
1825     $ARCH_EXT_LIST
1826     $CONFIG_LIST
1827     $HAVE_LIST_CMDLINE
1828     $THREADS_LIST
1829     asm
1830     cross_compile
1831     debug
1832     extra_warnings
1833     logging
1834     lto
1835     optimizations
1836     rpath
1837 "
1838
1839 PATHS_LIST="
1840     bindir
1841     datadir
1842     docdir
1843     incdir
1844     libdir
1845     mandir
1846     prefix
1847     shlibdir
1848 "
1849
1850 CMDLINE_SET="
1851     $PATHS_LIST
1852     ar
1853     arch
1854     as
1855     cc
1856     objcc
1857     cpu
1858     cross_prefix
1859     custom_allocator
1860     dep_cc
1861     env
1862     extra_version
1863     host_cc
1864     host_cflags
1865     host_extralibs
1866     host_ld
1867     host_ldflags
1868     host_os
1869     ignore_tests
1870     ld
1871     logfile
1872     malloc_prefix
1873     nm
1874     optflags
1875     pkg_config
1876     pkg_config_flags
1877     random_seed
1878     samples
1879     sysinclude
1880     sysroot
1881     target_exec
1882     target_os
1883     target_path
1884     target_samples
1885     toolchain
1886     x86asmexe
1887 "
1888
1889 CMDLINE_APPEND="
1890     extra_cflags
1891     extra_objcflags
1892     host_cppflags
1893 "
1894
1895 # code dependency declarations
1896
1897 # architecture extensions
1898
1899 armv5te_deps="arm"
1900 armv6_deps="arm"
1901 armv6t2_deps="arm"
1902 armv8_deps="aarch64"
1903 neon_deps_any="aarch64 arm"
1904 intrinsics_neon_deps="neon"
1905 vfp_deps_any="aarch64 arm"
1906 vfpv3_deps="vfp"
1907
1908 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1909
1910 altivec_deps="ppc"
1911 dcbzl_deps="ppc"
1912 ldbrx_deps="ppc"
1913 ppc4xx_deps="ppc"
1914 vsx_deps="altivec"
1915 power8_deps="vsx"
1916
1917 loongson_deps="mips"
1918 mips32r1_deps="mips32"
1919 mips32r2_deps="mips32"
1920 mips32r6_deps="mips32"
1921 mips64r1_deps="mips64"
1922 mips64r2_deps="mips64"
1923 mips64r6_deps="mips64"
1924
1925 vis_deps="sparc"
1926
1927 cpunop_deps="i686"
1928 x86_64_select="i686"
1929 x86_64_suggest="fast_cmov"
1930
1931 amd3dnow_deps="mmx"
1932 amd3dnowext_deps="amd3dnow"
1933 i686_deps="x86"
1934 mmx_deps="x86"
1935 mmxext_deps="mmx"
1936 sse_deps="mmxext"
1937 sse2_deps="sse"
1938 sse3_deps="sse2"
1939 ssse3_deps="sse3"
1940 sse4_deps="ssse3"
1941 sse42_deps="sse4"
1942 avx_deps="sse42"
1943 xop_deps="avx"
1944 fma3_deps="avx"
1945 fma4_deps="avx"
1946 avx2_deps="avx"
1947
1948 mmx_external_deps="x86asm"
1949 mmx_inline_deps="inline_asm x86"
1950 mmx_suggest="mmx_external mmx_inline"
1951
1952 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1953     eval dep=\$${ext}_deps
1954     eval ${ext}_external_deps='"${dep}_external"'
1955     eval ${ext}_inline_deps='"${dep}_inline"'
1956     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1957 done
1958
1959 aligned_stack_if_any="aarch64 ppc x86"
1960 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1961 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1962 fast_unaligned_if_any="aarch64 ppc x86"
1963 simd_align_16_if_any="altivec neon sse"
1964 simd_align_32_if_any="avx"
1965
1966 # system capabilities
1967 symver_if_any="symver_asm_label symver_gnu_asm"
1968 valgrind_backtrace_conflict="optimizations"
1969 valgrind_backtrace_deps="valgrind_valgrind_h"
1970
1971 # threading support
1972 atomics_gcc_if="sync_val_compare_and_swap"
1973 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1974 atomics_win32_if="MemoryBarrier"
1975 atomics_native_if_any="$ATOMICS_LIST"
1976 w32threads_deps="atomics_native"
1977 threads_if_any="$THREADS_LIST"
1978
1979 # subsystems
1980 cbs_h264_select="cbs golomb"
1981 cbs_h265_select="cbs golomb"
1982 cbs_mpeg2_select="cbs"
1983 dct_select="rdft"
1984 dirac_parse_select="golomb"
1985 error_resilience_select="me_cmp"
1986 faandct_deps="faan"
1987 faandct_select="fdctdsp"
1988 faanidct_deps="faan"
1989 faanidct_select="idctdsp"
1990 h264dsp_select="startcode"
1991 hevcparse_select="golomb"
1992 intrax8_select="blockdsp idctdsp"
1993 mdct_select="fft"
1994 rdft_select="fft"
1995 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1996 mpeg_er_select="error_resilience"
1997 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1998 mpegaudiodsp_select="dct"
1999 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
2000 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2001 vc1dsp_select="h264chroma qpeldsp startcode"
2002
2003 # decoders / encoders
2004 aac_decoder_select="adts_header imdct15 mdct sinewin"
2005 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2006 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2007 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2008 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2009 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2010 adpcm_g722_decoder_select="g722dsp"
2011 adpcm_g722_encoder_select="g722dsp"
2012 aic_decoder_select="golomb idctdsp"
2013 alac_encoder_select="lpc"
2014 als_decoder_select="bswapdsp"
2015 amrnb_decoder_select="lsp"
2016 amrwb_decoder_select="lsp"
2017 amv_decoder_select="sp5x_decoder"
2018 ape_decoder_select="bswapdsp"
2019 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2020 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2021 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2022 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2023 atrac1_decoder_select="mdct sinewin"
2024 atrac3_decoder_select="mdct"
2025 atrac3p_decoder_select="mdct sinewin"
2026 bink_decoder_select="blockdsp hpeldsp"
2027 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2028 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2029 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2030 clearvideo_decoder_select="idctdsp"
2031 cllc_decoder_select="bswapdsp"
2032 comfortnoise_encoder_select="lpc"
2033 cook_decoder_select="audiodsp mdct sinewin"
2034 cscd_decoder_select="lzo"
2035 cscd_decoder_suggest="zlib"
2036 dca_decoder_select="fmtconvert mdct"
2037 dds_decoder_select="texturedsp"
2038 dnxhd_decoder_select="blockdsp idctdsp"
2039 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2040 dvvideo_decoder_select="dvprofile idctdsp"
2041 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2042 dxa_decoder_deps="zlib"
2043 dxv_decoder_select="lzf texturedsp"
2044 eac3_decoder_select="ac3_decoder"
2045 eac3_encoder_select="ac3_encoder"
2046 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2047 eatgq_decoder_select="aandcttables idctdsp"
2048 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2049 exr_decoder_deps="zlib"
2050 ffv1_decoder_select="rangecoder"
2051 ffv1_encoder_select="rangecoder"
2052 ffvhuff_decoder_select="huffyuv_decoder"
2053 ffvhuff_encoder_select="huffyuv_encoder"
2054 fic_decoder_select="golomb"
2055 flac_decoder_select="flacdsp"
2056 flac_encoder_select="bswapdsp flacdsp lpc"
2057 flashsv_decoder_deps="zlib"
2058 flashsv_encoder_deps="zlib"
2059 flashsv2_decoder_deps="zlib"
2060 flv_decoder_select="h263_decoder"
2061 flv_encoder_select="h263_encoder"
2062 fourxm_decoder_select="blockdsp bswapdsp"
2063 fraps_decoder_select="bswapdsp huffman"
2064 g2m_decoder_deps="zlib"
2065 g2m_decoder_select="blockdsp idctdsp jpegtables"
2066 h261_decoder_select="mpeg_er mpegvideo"
2067 h261_encoder_select="aandcttables mpegvideoenc"
2068 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2069 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2070 h263i_decoder_select="h263_decoder"
2071 h263p_encoder_select="h263_encoder"
2072 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2073 h264_decoder_suggest="error_resilience"
2074 hap_decoder_select="snappy texturedsp"
2075 hap_encoder_deps="libsnappy"
2076 hap_encoder_select="texturedspenc"
2077 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2078 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2079 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2080 iac_decoder_select="imc_decoder"
2081 imc_decoder_select="bswapdsp fft mdct sinewin"
2082 indeo3_decoder_select="hpeldsp"
2083 indeo4_decoder_select="ividsp"
2084 indeo5_decoder_select="ividsp"
2085 interplay_video_decoder_select="hpeldsp"
2086 jpegls_decoder_select="mjpeg_decoder"
2087 jv_decoder_select="blockdsp"
2088 lagarith_decoder_select="huffyuvdsp"
2089 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2090 magicyuv_decoder_select="huffyuvdsp"
2091 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2092 metasound_decoder_select="lsp mdct sinewin"
2093 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2094 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2095 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2096 mjpegb_decoder_select="mjpeg_decoder"
2097 mlp_decoder_select="mlp_parser"
2098 motionpixels_decoder_select="bswapdsp"
2099 mp1_decoder_select="mpegaudio"
2100 mp1float_decoder_select="mpegaudio"
2101 mp2_decoder_select="mpegaudio"
2102 mp2float_decoder_select="mpegaudio"
2103 mp3_decoder_select="mpegaudio"
2104 mp3adu_decoder_select="mpegaudio"
2105 mp3adufloat_decoder_select="mpegaudio"
2106 mp3float_decoder_select="mpegaudio"
2107 mp3on4_decoder_select="mpegaudio"
2108 mp3on4float_decoder_select="mpegaudio"
2109 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2110 mpc8_decoder_select="mpegaudiodsp"
2111 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2112 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2113 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2114 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2115 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2116 mpeg4_encoder_select="h263_encoder"
2117 msa1_decoder_select="mss34dsp"
2118 msmpeg4v1_decoder_select="h263_decoder"
2119 msmpeg4v2_decoder_select="h263_decoder"
2120 msmpeg4v2_encoder_select="h263_encoder"
2121 msmpeg4v3_decoder_select="h263_decoder"
2122 msmpeg4v3_encoder_select="h263_encoder"
2123 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2124 mts2_decoder_select="mss34dsp"
2125 mxpeg_decoder_select="mjpeg_decoder"
2126 nellymoser_decoder_select="mdct sinewin"
2127 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2128 nuv_decoder_select="idctdsp lzo"
2129 on2avc_decoder_select="mdct"
2130 opus_decoder_deps="avresample"
2131 opus_decoder_select="imdct15"
2132 png_decoder_deps="zlib"
2133 png_encoder_deps="zlib"
2134 png_encoder_select="huffyuvencdsp"
2135 prores_decoder_select="idctdsp"
2136 prores_encoder_select="fdctdsp"
2137 qcelp_decoder_select="lsp"
2138 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2139 ra_144_encoder_select="audio_frame_queue lpc"
2140 ralf_decoder_select="golomb"
2141 rscc_decoder_deps="zlib"
2142 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2143 rv10_encoder_select="h263_encoder"
2144 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2145 rv20_encoder_select="h263_encoder"
2146 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2147 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2148 screenpresso_decoder_deps="zlib"
2149 sipr_decoder_select="lsp"
2150 sp5x_decoder_select="mjpeg_decoder"
2151 svq1_decoder_select="hpeldsp"
2152 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2153 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2154 svq3_decoder_suggest="zlib"
2155 tak_decoder_select="audiodsp"
2156 tdsc_decoder_deps="zlib"
2157 tdsc_decoder_select="mjpeg_decoder"
2158 theora_decoder_select="vp3_decoder"
2159 thp_decoder_select="mjpeg_decoder"
2160 tiff_decoder_suggest="zlib"
2161 tiff_encoder_suggest="zlib"
2162 truehd_decoder_select="mlp_decoder"
2163 truemotion2_decoder_select="bswapdsp"
2164 truespeech_decoder_select="bswapdsp"
2165 tscc_decoder_deps="zlib"
2166 txd_decoder_select="texturedsp"
2167 twinvq_decoder_select="mdct lsp sinewin"
2168 utvideo_decoder_select="bswapdsp huffyuvdsp"
2169 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2170 vble_decoder_select="huffyuvdsp"
2171 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2172 vc1image_decoder_select="vc1_decoder"
2173 vorbis_decoder_select="mdct"
2174 vorbis_encoder_select="mdct"
2175 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2176 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2177 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2178 vp6a_decoder_select="vp6_decoder"
2179 vp6f_decoder_select="vp6_decoder"
2180 vp7_decoder_select="h264pred videodsp vp8dsp"
2181 vp8_decoder_select="h264pred videodsp vp8dsp"
2182 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2183 webp_decoder_select="vp8_decoder"
2184 wmapro_decoder_select="mdct sinewin wma_freqs"
2185 wmav1_decoder_select="mdct sinewin wma_freqs"
2186 wmav1_encoder_select="mdct sinewin wma_freqs"
2187 wmav2_decoder_select="mdct sinewin wma_freqs"
2188 wmav2_encoder_select="mdct sinewin wma_freqs"
2189 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2190 wmv1_decoder_select="h263_decoder"
2191 wmv1_encoder_select="h263_encoder"
2192 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2193 wmv2_encoder_select="h263_encoder wmv2dsp"
2194 wmv3_decoder_select="vc1_decoder"
2195 wmv3image_decoder_select="wmv3_decoder"
2196 zerocodec_decoder_deps="zlib"
2197 zlib_decoder_deps="zlib"
2198 zlib_encoder_deps="zlib"
2199 zmbv_decoder_deps="zlib"
2200 zmbv_encoder_deps="zlib"
2201
2202 # hardware accelerators
2203 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2204 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2205 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2206 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2207
2208 h263_vaapi_hwaccel_deps="vaapi"
2209 h263_vaapi_hwaccel_select="h263_decoder"
2210 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2211 h264_cuvid_hwaccel_select="h264_decoder"
2212 h264_d3d11va_hwaccel_deps="d3d11va"
2213 h264_d3d11va_hwaccel_select="h264_decoder"
2214 h264_d3d11va2_hwaccel_deps="d3d11va"
2215 h264_d3d11va2_hwaccel_select="h264_decoder"
2216 h264_dxva2_hwaccel_deps="dxva2"
2217 h264_dxva2_hwaccel_select="h264_decoder"
2218 h264_mmal_hwaccel_deps="mmal"
2219 h264_qsv_hwaccel_deps="libmfx"
2220 h264_vaapi_hwaccel_deps="vaapi"
2221 h264_vaapi_hwaccel_select="h264_decoder"
2222 h264_vda_hwaccel_deps="vda"
2223 h264_vda_hwaccel_select="h264_decoder"
2224 h264_vda_old_hwaccel_deps="vda"
2225 h264_vda_old_hwaccel_select="h264_decoder"
2226 h264_vdpau_hwaccel_deps="vdpau"
2227 h264_vdpau_hwaccel_select="h264_decoder"
2228 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2229 hevc_cuvid_hwaccel_select="hevc_decoder"
2230 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2231 hevc_d3d11va_hwaccel_select="hevc_decoder"
2232 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2233 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2234 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2235 hevc_dxva2_hwaccel_select="hevc_decoder"
2236 hevc_qsv_hwaccel_deps="libmfx"
2237 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2238 hevc_vaapi_hwaccel_select="hevc_decoder"
2239 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2240 hevc_vdpau_hwaccel_select="hevc_decoder"
2241 mpeg1_vdpau_hwaccel_deps="vdpau"
2242 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2243 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2244 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2245 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2246 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2247 mpeg2_dxva2_hwaccel_deps="dxva2"
2248 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2249 mpeg2_mmal_hwaccel_deps="mmal"
2250 mpeg2_qsv_hwaccel_deps="libmfx"
2251 mpeg2_vaapi_hwaccel_deps="vaapi"
2252 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2253 mpeg2_vdpau_hwaccel_deps="vdpau"
2254 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2255 mpeg4_vaapi_hwaccel_deps="vaapi"
2256 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2257 mpeg4_vdpau_hwaccel_deps="vdpau"
2258 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2259 vc1_d3d11va_hwaccel_deps="d3d11va"
2260 vc1_d3d11va_hwaccel_select="vc1_decoder"
2261 vc1_d3d11va2_hwaccel_deps="d3d11va"
2262 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2263 vc1_dxva2_hwaccel_deps="dxva2"
2264 vc1_dxva2_hwaccel_select="vc1_decoder"
2265 vc1_mmal_hwaccel_deps="mmal"
2266 vc1_qsv_hwaccel_deps="libmfx"
2267 vc1_vaapi_hwaccel_deps="vaapi"
2268 vc1_vaapi_hwaccel_select="vc1_decoder"
2269 vc1_vdpau_hwaccel_deps="vdpau"
2270 vc1_vdpau_hwaccel_select="vc1_decoder"
2271 vp8_qsv_hwaccel_deps="libmfx"
2272 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2273 vp8_vaapi_hwaccel_select="vp8_decoder"
2274 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2275 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2276 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2277 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2278 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2279
2280 # hardware-accelerated codecs
2281 nvenc_deps_any="libdl LoadLibrary"
2282 omx_deps="libdl pthreads"
2283 omx_rpi_select="omx"
2284 qsv_deps="libmfx"
2285 qsvdec_select="qsv"
2286 qsvenc_select="qsv"
2287 qsvvpp_select="qsv"
2288 vaapi_encode_deps="vaapi"
2289
2290 hwupload_cuda_filter_deps="cuda"
2291 scale_npp_filter_deps="cuda libnpp"
2292
2293 h264_mmal_decoder_deps="mmal"
2294 h264_nvenc_encoder_deps="nvenc"
2295 h264_omx_encoder_deps="omx"
2296 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2297 h264_qsv_encoder_select="qsvenc"
2298 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2299 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2300 hevc_nvenc_encoder_deps="nvenc"
2301 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2302 hevc_qsv_encoder_select="hevcparse qsvenc"
2303 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2304 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2305 mjpeg_qsv_encoder_deps="libmfx"
2306 mjpeg_qsv_encoder_select="qsvenc"
2307 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2308 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2309 mpeg2_mmal_decoder_deps="mmal"
2310 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2311 mpeg2_qsv_encoder_select="qsvenc"
2312 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2313 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2314 mpeg4_omx_encoder_deps="omx"
2315 vc1_mmal_decoder_deps="mmal"
2316 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2317 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2318 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2319 vp8_vaapi_encoder_select="vaapi_encode"
2320 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2321 vp9_vaapi_encoder_select="vaapi_encode"
2322
2323 nvenc_h264_encoder_select="h264_nvenc_encoder"
2324 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2325
2326 # parsers
2327 aac_parser_select="adts_header"
2328 h264_parser_select="golomb h264dsp h264parse"
2329 hevc_parser_select="hevcparse"
2330 mpegaudio_parser_select="mpegaudioheader"
2331 mpegvideo_parser_select="mpegvideo"
2332 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2333 vc1_parser_select="vc1dsp"
2334
2335 # bitstream_filters
2336 aac_adtstoasc_bsf_select="adts_header"
2337 h264_metadata_bsf_select="cbs_h264"
2338 h264_redundant_pps_bsf_select="cbs_h264"
2339 hevc_metadata_bsf_select="cbs_h265"
2340 mjpeg2jpeg_bsf_select="jpegtables"
2341 mpeg2_metadata_bsf_select="cbs_mpeg2"
2342 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2343
2344 # external libraries
2345 avisynth_deps="LoadLibrary"
2346 avxsynth_deps="libdl"
2347 avisynth_demuxer_deps_any="avisynth avxsynth"
2348 avisynth_demuxer_select="riffdec"
2349 libdcadec_decoder_deps="libdcadec"
2350 libfaac_encoder_deps="libfaac"
2351 libfaac_encoder_select="audio_frame_queue"
2352 libfdk_aac_decoder_deps="libfdk_aac"
2353 libfdk_aac_encoder_deps="libfdk_aac"
2354 libfdk_aac_encoder_select="audio_frame_queue"
2355 libgsm_decoder_deps="libgsm"
2356 libgsm_encoder_deps="libgsm"
2357 libgsm_ms_decoder_deps="libgsm"
2358 libgsm_ms_encoder_deps="libgsm"
2359 libilbc_decoder_deps="libilbc"
2360 libilbc_encoder_deps="libilbc"
2361 libkvazaar_encoder_deps="libkvazaar"
2362 libmp3lame_encoder_deps="libmp3lame"
2363 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2364 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2365 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2366 libopencore_amrnb_encoder_select="audio_frame_queue"
2367 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2368 libopenh264_decoder_deps="libopenh264"
2369 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2370 libopenh264_encoder_deps="libopenh264"
2371 libopenjpeg_decoder_deps="libopenjpeg"
2372 libopenjpeg_encoder_deps="libopenjpeg"
2373 libopus_decoder_deps="libopus"
2374 libopus_encoder_deps="libopus"
2375 libopus_encoder_select="audio_frame_queue"
2376 libschroedinger_decoder_deps="libschroedinger"
2377 libschroedinger_encoder_deps="libschroedinger"
2378 libspeex_decoder_deps="libspeex"
2379 libspeex_encoder_deps="libspeex"
2380 libspeex_encoder_select="audio_frame_queue"
2381 libtheora_encoder_deps="libtheora"
2382 libtwolame_encoder_deps="libtwolame"
2383 libvo_aacenc_encoder_deps="libvo_aacenc"
2384 libvo_aacenc_encoder_select="audio_frame_queue"
2385 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2386 libvorbis_encoder_deps="libvorbis"
2387 libvorbis_encoder_select="audio_frame_queue"
2388 libvpx_vp8_decoder_deps="libvpx"
2389 libvpx_vp8_encoder_deps="libvpx"
2390 libvpx_vp9_decoder_deps="libvpx"
2391 libvpx_vp9_encoder_deps="libvpx"
2392 libwavpack_encoder_deps="libwavpack"
2393 libwavpack_encoder_select="audio_frame_queue"
2394 libwebp_encoder_deps="libwebp"
2395 libx262_encoder_deps="libx262"
2396 libx264_encoder_deps="libx264"
2397 libx265_encoder_deps="libx265"
2398 libxavs_encoder_deps="libxavs"
2399 libxvid_encoder_deps="libxvid mkstemp"
2400
2401 # demuxers / muxers
2402 ac3_demuxer_select="ac3_parser"
2403 asf_demuxer_select="riffdec"
2404 asf_muxer_select="riffenc"
2405 asf_stream_muxer_select="asf_muxer"
2406 avi_demuxer_select="iso_media riffdec"
2407 avi_muxer_select="riffenc"
2408 caf_demuxer_select="iso_media riffdec"
2409 dash_muxer_select="mp4_muxer"
2410 dirac_demuxer_select="dirac_parser"
2411 dv_demuxer_select="dvprofile"
2412 dv_muxer_select="dvprofile"
2413 dxa_demuxer_select="riffdec"
2414 eac3_demuxer_select="ac3_parser"
2415 f4v_muxer_select="mov_muxer"
2416 flac_demuxer_select="flac_parser"
2417 hds_muxer_select="flv_muxer"
2418 hls_muxer_select="mpegts_muxer"
2419 ipod_muxer_select="mov_muxer"
2420 ismv_muxer_select="mov_muxer"
2421 matroska_audio_muxer_select="matroska_muxer"
2422 matroska_demuxer_select="iso_media riffdec"
2423 matroska_demuxer_suggest="bzlib lzo zlib"
2424 matroska_muxer_select="iso_media riffenc"
2425 mmf_muxer_select="riffenc"
2426 mov_demuxer_select="iso_media riffdec"
2427 mov_demuxer_suggest="zlib"
2428 mov_muxer_select="iso_media riffenc rtpenc_chain"
2429 mp3_demuxer_select="mpegaudio_parser"
2430 mp3_muxer_select="mpegaudioheader"
2431 mp4_muxer_select="mov_muxer"
2432 mpegts_demuxer_select="iso_media"
2433 mpegts_muxer_select="adts_muxer latm_muxer"
2434 mpegtsraw_demuxer_select="mpegts_demuxer"
2435 mxf_d10_muxer_select="mxf_muxer"
2436 nut_muxer_select="riffenc"
2437 nuv_demuxer_select="riffdec"
2438 oga_muxer_select="ogg_muxer"
2439 ogg_demuxer_select="dirac_parse"
2440 opus_muxer_select="ogg_muxer"
2441 psp_muxer_select="mov_muxer"
2442 rtp_demuxer_select="sdp_demuxer"
2443 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2444 rtsp_demuxer_select="http_protocol rtpdec"
2445 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2446 sap_demuxer_select="sdp_demuxer"
2447 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2448 sdp_demuxer_select="rtpdec"
2449 smoothstreaming_muxer_select="ismv_muxer"
2450 spdif_demuxer_select="adts_header"
2451 spdif_muxer_select="adts_header"
2452 spx_muxer_select="ogg_muxer"
2453 swf_demuxer_suggest="zlib"
2454 tak_demuxer_select="tak_parser"
2455 tg2_muxer_select="mov_muxer"
2456 tgp_muxer_select="mov_muxer"
2457 w64_demuxer_select="wav_demuxer"
2458 wav_demuxer_select="riffdec"
2459 wav_muxer_select="riffenc"
2460 webm_muxer_select="iso_media riffenc"
2461 wtv_demuxer_select="mpegts_demuxer riffdec"
2462 xmv_demuxer_select="riffdec"
2463 xwma_demuxer_select="riffdec"
2464
2465 # indevs / outdevs
2466 alsa_indev_deps="alsa"
2467 alsa_outdev_deps="alsa"
2468 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2469 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2470 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2471 dv1394_indev_deps="dv1394"
2472 dv1394_indev_select="dv_demuxer"
2473 fbdev_indev_deps="linux_fb_h"
2474 jack_indev_deps="libjack"
2475 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2476 libcdio_indev_deps="libcdio"
2477 libdc1394_indev_deps="libdc1394"
2478 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2479 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2480 pulse_indev_deps="libpulse"
2481 sndio_indev_deps="sndio"
2482 sndio_outdev_deps="sndio"
2483 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2484 vfwcap_indev_deps="vfw32 vfwcap_defines"
2485 xcbgrab_indev_deps="libxcb libxcb_shape"
2486 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2487
2488 # protocols
2489 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2490 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2491 ffrtmpcrypt_protocol_select="tcp_protocol"
2492 ffrtmphttp_protocol_conflict="librtmp_protocol"
2493 ffrtmphttp_protocol_select="http_protocol"
2494 gopher_protocol_select="network"
2495 http_protocol_select="tcp_protocol"
2496 http_protocol_suggest="zlib"
2497 httpproxy_protocol_select="tcp_protocol"
2498 httpproxy_protocol_suggest="zlib"
2499 https_protocol_select="tls_protocol"
2500 https_protocol_suggest="zlib"
2501 icecast_protocol_select="http_protocol"
2502 librtmp_protocol_deps="librtmp"
2503 librtmpe_protocol_deps="librtmp"
2504 librtmps_protocol_deps="librtmp"
2505 librtmpt_protocol_deps="librtmp"
2506 librtmpte_protocol_deps="librtmp"
2507 mmsh_protocol_select="http_protocol"
2508 mmst_protocol_select="network"
2509 rtmp_protocol_conflict="librtmp_protocol"
2510 rtmp_protocol_select="tcp_protocol"
2511 rtmp_protocol_suggest="zlib"
2512 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2513 rtmpe_protocol_suggest="zlib"
2514 rtmps_protocol_conflict="librtmp_protocol"
2515 rtmps_protocol_select="tls_protocol"
2516 rtmps_protocol_suggest="zlib"
2517 rtmpt_protocol_select="ffrtmphttp_protocol"
2518 rtmpt_protocol_suggest="zlib"
2519 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2520 rtmpte_protocol_suggest="zlib"
2521 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2522 rtmpts_protocol_suggest="zlib"
2523 rtp_protocol_select="udp_protocol"
2524 sctp_protocol_deps="struct_sctp_event_subscribe"
2525 sctp_protocol_select="network"
2526 srtp_protocol_select="rtp_protocol srtp"
2527 tcp_protocol_select="network"
2528 tls_protocol_deps_any="gnutls openssl"
2529 tls_protocol_select="tcp_protocol"
2530 udp_protocol_select="network"
2531 unix_protocol_deps="sys_un_h"
2532 unix_protocol_select="network"
2533
2534 # filters
2535 asyncts_filter_deps="avresample"
2536 blackframe_filter_deps="gpl"
2537 boxblur_filter_deps="gpl"
2538 bs2b_filter_deps="libbs2b"
2539 cropdetect_filter_deps="gpl"
2540 deinterlace_qsv_filter_deps="libmfx"
2541 deinterlace_vaapi_filter_deps="vaapi"
2542 delogo_filter_deps="gpl"
2543 drawtext_filter_deps="libfreetype"
2544 drawtext_filter_suggest="libfontconfig"
2545 frei0r_filter_deps="frei0r libdl"
2546 frei0r_src_filter_deps="frei0r libdl"
2547 hdcd_filter_deps="libhdcd"
2548 hqdn3d_filter_deps="gpl"
2549 interlace_filter_deps="gpl"
2550 movie_filter_deps="avcodec avformat"
2551 ocv_filter_deps="libopencv"
2552 overlay_qsv_filter_deps="libmfx"
2553 overlay_qsv_filter_select="qsvvpp"
2554 resample_filter_deps="avresample"
2555 scale_filter_deps="swscale"
2556 scale_qsv_filter_deps="libmfx"
2557 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2558 vpp_qsv_filter_deps="libmfx"
2559 vpp_qsv_filter_select="qsvvpp"
2560
2561 # examples
2562 decode_audio_example_deps="avcodec avutil"
2563 decode_video_example_deps="avcodec avutil"
2564 encode_audio_example_deps="avcodec avutil"
2565 encode_video_example_deps="avcodec avutil"
2566 filter_audio_example_deps="avfilter avutil"
2567 metadata_example_deps="avformat avutil"
2568 output_example_deps="avcodec avformat avresample avutil swscale"
2569 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2570 transcode_aac_example_deps="avcodec avformat avresample"
2571
2572 # EXTRALIBS_LIST
2573 cpu_init_extralibs="pthreads_extralibs"
2574 cws2fws_extralibs="zlib_extralibs"
2575
2576 # libraries, in linking order
2577 avcodec_deps="avutil"
2578 avcodec_select="null_bsf"
2579 avdevice_deps="avformat avcodec avutil"
2580 avfilter_deps="avutil"
2581 avformat_deps="avcodec avutil"
2582 avformat_suggest="network"
2583 avresample_deps="avutil"
2584 swscale_deps="avutil"
2585
2586 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2587 avdevice_extralibs="libm_extralibs"
2588 avformat_extralibs="libm_extralibs"
2589 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2590 avresample_extralibs="libm_extralibs"
2591 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2592 swscale_extralibs="libm_extralibs"
2593
2594 # programs
2595 avconv_deps="avcodec avfilter avformat avresample swscale"
2596 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2597                fps_filter null_filter resample_filter scale_filter
2598                trim_filter"
2599 avconv_suggest="psapi shell32"
2600 avplay_deps="avcodec avfilter avformat avresample sdl"
2601 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2602 avplay_suggest="shell32"
2603 avprobe_deps="avcodec avformat"
2604 avprobe_suggest="shell32"
2605
2606 # documentation
2607 pod2man_deps="doc"
2608 texi2html_deps="doc"
2609
2610 # default parameters
2611
2612 logfile="avbuild/config.log"
2613
2614 # installation paths
2615 prefix_default="/usr/local"
2616 bindir_default='${prefix}/bin'
2617 datadir_default='${prefix}/share/avconv'
2618 docdir_default='${prefix}/share/doc/libav'
2619 incdir_default='${prefix}/include'
2620 libdir_default='${prefix}/lib'
2621 mandir_default='${prefix}/share/man'
2622 shlibdir_default="$libdir_default"
2623
2624 # toolchain
2625 ar_default="ar"
2626 cc_default="gcc"
2627 host_cc_default="gcc"
2628 x86asmexe_default="nasm"
2629 ln_s="ln -s -f"
2630 nm_default="nm -g"
2631 pkg_config_default=pkg-config
2632 ranlib="ranlib"
2633 strip="strip"
2634 version_script='--version-script'
2635
2636 # machine
2637 arch_default=$(uname -m)
2638 cpu="generic"
2639 intrinsics="none"
2640
2641 # OS
2642 target_os_default=$(tolower $(uname -s))
2643 host_os=$target_os_default
2644
2645 # configurable options
2646 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2647
2648 enable asm
2649 enable debug
2650 enable doc
2651 enable faan faandct faanidct
2652 enable optimizations
2653 enable safe_bitstream_reader
2654 enable static
2655 enable swscale_alpha
2656 enable valgrind_backtrace
2657
2658 # By default, enable only those hwaccels that have no external dependencies.
2659 enable d3d11va dxva2 vda vdpau
2660
2661 # internal components are enabled by default
2662 enable $EXTRALIBS_LIST
2663
2664 # Avoid external, non-system, libraries getting enabled by dependency resolution
2665 disable $EXTERNAL_LIBRARY_LIST
2666
2667 # build settings
2668 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2669 LIBPREF="lib"
2670 LIBSUF=".a"
2671 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2672 SLIBPREF="lib"
2673 SLIBSUF=".so"
2674 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2675 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2676 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2677 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2678 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2679 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2680 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2681
2682 asflags_filter=echo
2683 cflags_filter=echo
2684 ldflags_filter=echo
2685
2686 AS_C='-c'
2687 AS_O='-o $@'
2688 CC_C='-c'
2689 CC_E='-E -o $@'
2690 CC_O='-o $@'
2691 OBJCC_C='-c'
2692 OBJCC_E='-E -o $@'
2693 OBJCC_O='-o $@'
2694 X86ASM_O='-o $@'
2695 LD_O='-o $@'
2696 LD_LIB='-l%'
2697 LD_PATH='-L'
2698 HOSTCC_C='-c'
2699 HOSTCC_E='-E -o $@'
2700 HOSTCC_O='-o $@'
2701 HOSTLD_O='-o $@'
2702
2703 host_extralibs='-lm'
2704 host_cflags_filter=echo
2705 host_ldflags_filter=echo
2706
2707 target_path='$(CURDIR)'
2708
2709 # since the object filename is not given with the -MM flag, the compiler
2710 # is only able to print the basename, and we must add the path ourselves
2711 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2712 DEPFLAGS='-MM'
2713
2714 mkdir -p avbuild
2715
2716 # find source path
2717 if test -f configure; then
2718     source_path=.
2719 else
2720     source_path=$(cd $(dirname "$0"); pwd)
2721     echo "$source_path" | grep -q '[[:blank:]]' &&
2722         die "Out of tree builds are impossible with whitespace in source path."
2723     test -e "$source_path/config.h" &&
2724         die "Out of tree builds are impossible with config.h in source dir."
2725 fi
2726
2727 for v in "$@"; do
2728     r=${v#*=}
2729     l=${v%"$r"}
2730     r=$(sh_quote "$r")
2731     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2732 done
2733
2734 find_things(){
2735     thing=$1
2736     pattern=$2
2737     file=$source_path/$3
2738     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2739 }
2740
2741 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2742 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2743 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2744 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2745 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2746 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2747 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2748 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2749 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2750
2751 find_things_extern(){
2752     thing=$1
2753     pattern=$2
2754     file=$source_path/$3
2755     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2756 }
2757
2758 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2759 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2760
2761 AVCODEC_COMPONENTS_LIST="
2762     $BSF_LIST
2763     $DECODER_LIST
2764     $ENCODER_LIST
2765     $HWACCEL_LIST
2766     $PARSER_LIST
2767 "
2768
2769 AVDEVICE_COMPONENTS_LIST="
2770     $INDEV_LIST
2771     $OUTDEV_LIST
2772 "
2773
2774 AVFILTER_COMPONENTS_LIST="
2775     $FILTER_LIST
2776 "
2777
2778 AVFORMAT_COMPONENTS_LIST="
2779     $DEMUXER_LIST
2780     $MUXER_LIST
2781     $PROTOCOL_LIST
2782 "
2783
2784 ALL_COMPONENTS="
2785     $AVCODEC_COMPONENTS_LIST
2786     $AVDEVICE_COMPONENTS_LIST
2787     $AVFILTER_COMPONENTS_LIST
2788     $AVFORMAT_COMPONENTS_LIST
2789 "
2790
2791 for n in $COMPONENT_LIST; do
2792     v=$(toupper ${n%s})_LIST
2793     eval enable \$$v
2794     eval ${n}_if_any="\$$v"
2795 done
2796
2797 enable $ARCH_EXT_LIST
2798
2799 die_unknown(){
2800     echo "Unknown option \"$1\"."
2801     echo "See $0 --help for available options."
2802     exit 1
2803 }
2804
2805 print_3_columns() {
2806     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2807 }
2808
2809 show_list() {
2810     suffix=_$1
2811     shift
2812     echo $* | sed s/$suffix//g | print_3_columns
2813     exit 0
2814 }
2815
2816 rand_list(){
2817     IFS=', '
2818     set -- $*
2819     unset IFS
2820     for thing; do
2821         comp=${thing%:*}
2822         prob=${thing#$comp}
2823         prob=${prob#:}
2824         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2825         echo "prob ${prob:-0.5}"
2826         printf '%s\n' $comp
2827     done
2828 }
2829
2830 do_random(){
2831     action=$1
2832     shift
2833     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2834     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2835 }
2836
2837 for opt do
2838     optval="${opt#*=}"
2839     case "$opt" in
2840         --extra-ldflags=*)
2841             add_ldflags $optval
2842         ;;
2843         --extra-ldexeflags=*)
2844             add_ldexeflags $optval
2845         ;;
2846         --extra-ldsoflags=*)
2847             add_ldsoflags $optval
2848         ;;
2849         --extra-libs=*)
2850             add_extralibs $optval
2851         ;;
2852         --disable-devices)
2853             disable $INDEV_LIST $OUTDEV_LIST
2854         ;;
2855         --enable-debug=*)
2856             debuglevel="$optval"
2857         ;;
2858         --disable-programs)
2859             disable $PROGRAM_LIST
2860         ;;
2861         --disable-everything)
2862             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2863         ;;
2864         --disable-all)
2865             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2866             disable $LIBRARY_LIST $PROGRAM_LIST doc
2867         ;;
2868         --enable-random|--disable-random)
2869             action=${opt%%-random}
2870             do_random ${action#--} $COMPONENT_LIST
2871         ;;
2872         --enable-random=*|--disable-random=*)
2873             action=${opt%%-random=*}
2874             do_random ${action#--} $optval
2875         ;;
2876         --enable-*=*|--disable-*=*)
2877             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2878             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2879             eval list=\$$(toupper $thing)_LIST
2880             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2881             $action $(filter "$name" $list)
2882         ;;
2883         --enable-avserver|--disable-avserver*)
2884             warn "avserver has been removed, the ${opt} option is only"\
2885                  "provided for compatibility and will be removed in the future"
2886         ;;
2887         --enable-yasm|--disable-yasm)
2888             warn "The ${opt} option is only provided for compatibility and will be\n"\
2889                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2890             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2891         ;;
2892         --enable-?*|--disable-?*)
2893             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2894             if is_in $option $COMPONENT_LIST; then
2895                 test $action = disable && action=unset
2896                 eval $action \$$(toupper ${option%s})_LIST
2897             elif is_in $option $CMDLINE_SELECT; then
2898                 $action $option
2899             else
2900                 die_unknown $opt
2901             fi
2902         ;;
2903         --list-*)
2904             NAME="${opt#--list-}"
2905             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2906             NAME=${NAME%s}
2907             eval show_list $NAME \$$(toupper $NAME)_LIST
2908         ;;
2909         --help|-h) show_help
2910         ;;
2911         --quiet|-q) quiet=yes
2912         ;;
2913         *)
2914             optname="${opt%%=*}"
2915             optname="${optname#--}"
2916             optname=$(echo "$optname" | sed 's/-/_/g')
2917             if is_in $optname $CMDLINE_SET; then
2918                 eval $optname='$optval'
2919             elif is_in $optname $CMDLINE_APPEND; then
2920                 append $optname "$optval"
2921             else
2922                 die_unknown $opt
2923             fi
2924         ;;
2925     esac
2926 done
2927
2928 for e in $env; do
2929     eval "export $e"
2930 done
2931
2932 disabled logging && logfile=/dev/null
2933
2934 # Die early if licensing-related configure options are incompatible.
2935 die_license_disabled() {
2936     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2937 }
2938
2939 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2940 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2941 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2942
2943 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2944
2945 enabled_all gnutls openssl &&
2946     die "GnuTLS and OpenSSL must not be enabled at the same time."
2947
2948 # Disable all the library-specific components if the library itself
2949 # is disabled, see AVCODEC_LIST and following _LIST variables.
2950
2951 disable_components(){
2952     disabled ${1} && disable $(
2953         eval components="\$$(toupper ${1})_COMPONENTS"
2954         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2955     )
2956 }
2957
2958 map 'disable_components $v' $LIBRARY_LIST
2959
2960 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2961 set >> $logfile
2962
2963 case "$toolchain" in
2964     *-asan)
2965         cc_default="${toolchain%-asan}"
2966         add_cflags  -fsanitize=address
2967         add_ldflags -fsanitize=address
2968     ;;
2969     *-msan)
2970         cc_default="${toolchain%-msan}"
2971         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2972         add_ldflags -fsanitize=memory
2973     ;;
2974     *-tsan)
2975         cc_default="${toolchain%-tsan}"
2976         add_cflags  -fsanitize=thread -fPIE
2977         add_ldflags -fsanitize=thread -pie
2978         case "$toolchain" in
2979             gcc-tsan)
2980                 add_cflags  -fPIC
2981                 add_ldflags -fPIC
2982                 ;;
2983         esac
2984     ;;
2985     *-usan)
2986         cc_default="${toolchain%-usan}"
2987         add_cflags  -fsanitize=undefined
2988         add_ldflags -fsanitize=undefined
2989         case "$toolchain" in
2990             clang-usan)
2991                 add_cflags -O1
2992                 ;;
2993         esac
2994     ;;
2995     valgrind-*)
2996         target_exec_default="valgrind"
2997         case "$toolchain" in
2998             valgrind-massif)
2999                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
3000                 ;;
3001             valgrind-memcheck)
3002                 target_exec_args="--track-origins=yes --leak-check=full"
3003                 ;;
3004         esac
3005     ;;
3006     msvc)
3007         # Check whether the current MSVC version needs the C99 converter.
3008         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3009         # support enough of C99 to build libav. Default to the new
3010         # behaviour if the regexp was unable to match anything, since this
3011         # successfully parses the version number of existing supported
3012         # versions that require the converter (MSVC 2010 and 2012).
3013         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3014         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3015             cc_default="cl"
3016         else
3017             cc_default="c99wrap cl"
3018         fi
3019         ld_default="$source_path/compat/windows/mslink"
3020         nm_default="dumpbin -symbols"
3021         ar_default="lib"
3022         case "$arch" in
3023         arm*)
3024             as_default="armasm"
3025             ;;
3026         esac
3027         target_os_default="win32"
3028         # Use a relative path for TMPDIR. This makes sure all the
3029         # ffconf temp files are written with a relative path, avoiding
3030         # issues with msys/win32 path conversion for MSVC parameters
3031         # such as -Fo<file> or -out:<file>.
3032         TMPDIR=.
3033     ;;
3034     icl)
3035         cc_default="icl"
3036         ld_default="xilink"
3037         nm_default="dumpbin -symbols"
3038         ar_default="xilib"
3039         target_os_default="win32"
3040         TMPDIR=.
3041     ;;
3042     gcov)
3043         add_cflags  -fprofile-arcs -ftest-coverage
3044         add_ldflags -fprofile-arcs -ftest-coverage
3045     ;;
3046     llvm-cov)
3047         add_cflags -fprofile-arcs -ftest-coverage
3048         add_ldflags --coverage
3049     ;;
3050     hardened)
3051         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3052         add_cflags   -fno-strict-overflow -fstack-protector-all
3053         add_ldflags  -Wl,-z,relro -Wl,-z,now
3054     ;;
3055     ?*)
3056         die "Unknown toolchain $toolchain"
3057     ;;
3058 esac
3059
3060 test -n "$cross_prefix" && enable cross_compile
3061
3062 if enabled cross_compile; then
3063     test -n "$arch" && test -n "$target_os" ||
3064         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3065 fi
3066
3067 ar_default="${cross_prefix}${ar_default}"
3068 cc_default="${cross_prefix}${cc_default}"
3069 objcc_default="${cross_prefix}${objcc_default}"
3070 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3071 nm_default="${cross_prefix}${nm_default}"
3072 pkg_config_default="${cross_prefix}${pkg_config_default}"
3073 ranlib="${cross_prefix}${ranlib}"
3074 strip="${cross_prefix}${strip}"
3075
3076 sysinclude_default="${sysroot}/usr/include"
3077
3078 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3079 enabled cross_compile || host_cc_default=$cc
3080 set_default host_cc
3081
3082 if ! $pkg_config --version >/dev/null 2>&1; then
3083     warn "$pkg_config not found, library detection may fail."
3084     pkg_config=false
3085 fi
3086
3087 exesuf() {
3088     case $1 in
3089         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3090     esac
3091 }
3092
3093 EXESUF=$(exesuf $target_os)
3094 HOSTEXESUF=$(exesuf $host_os)
3095
3096 # set temporary file name
3097 : ${TMPDIR:=$TEMPDIR}
3098 : ${TMPDIR:=$TMP}
3099 : ${TMPDIR:=/tmp}
3100
3101 if ! check_cmd mktemp -u XXXXXX; then
3102     # simple replacement for missing mktemp
3103     # NOT SAFE FOR GENERAL USE
3104     mktemp(){
3105         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3106         echo "$tmpname"
3107         mkdir "$tmpname"
3108     }
3109 fi
3110
3111 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3112     die "Unable to create temporary directory in $TMPDIR."
3113
3114 tmpfile(){
3115     tmp="${AVTMPDIR}/test"$2
3116     (set -C; exec > $tmp) 2> /dev/null ||
3117         die "Unable to create temporary file in $AVTMPDIR."
3118     eval $1=$tmp
3119 }
3120
3121 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3122 trap 'exit 2' INT
3123
3124 tmpfile TMPASM .asm
3125 tmpfile TMPC   .c
3126 tmpfile TMPE   $EXESUF
3127 tmpfile TMPH   .h
3128 tmpfile TMPO   .o
3129 tmpfile TMPS   .S
3130 tmpfile TMPSH  .sh
3131 tmpfile TMPV   .ver
3132
3133 unset -f mktemp
3134
3135 chmod +x $TMPE
3136
3137 # make sure we can execute files in $TMPDIR
3138 cat > $TMPSH 2>> $logfile <<EOF
3139 #! /bin/sh
3140 EOF
3141 chmod +x $TMPSH >> $logfile 2>&1
3142 if ! $TMPSH >> $logfile 2>&1; then
3143     cat <<EOF
3144 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3145 variable to another directory and make sure that it is not mounted noexec.
3146 EOF
3147     die "Sanity test failed."
3148 fi
3149
3150 armasm_flags(){
3151     for flag; do
3152         case $flag in
3153             # Filter out MSVC cl.exe options from cflags that shouldn't
3154             # be passed to gas-preprocessor
3155             -M[TD]*)                                            ;;
3156             *)                  echo $flag                      ;;
3157         esac
3158    done
3159 }
3160
3161 ccc_flags(){
3162     for flag; do
3163         case $flag in
3164             -std=c99)           echo -c99                       ;;
3165             -mcpu=*)            echo -arch ${flag#*=}           ;;
3166             -mieee)             echo -ieee                      ;;
3167             -O*|-fast)          echo $flag                      ;;
3168             -fno-math-errno)    echo -assume nomath_errno       ;;
3169             -g)                 echo -g3                        ;;
3170             -Wall)              echo -msg_enable level2         ;;
3171             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3172             -Wl,*)              echo $flag                      ;;
3173             -f*|-W*)                                            ;;
3174             *)                  echo $flag                      ;;
3175         esac
3176    done
3177 }
3178
3179 cparser_flags(){
3180     for flag; do
3181         case $flag in
3182             -Wno-switch)             echo -Wno-switch-enum ;;
3183             -Wno-format-zero-length) ;;
3184             -Wdisabled-optimization) ;;
3185             -Wno-pointer-sign)       echo -Wno-other ;;
3186             *)                       echo $flag ;;
3187         esac
3188     done
3189 }
3190
3191 msvc_common_flags(){
3192     for flag; do
3193         case $flag in
3194             # In addition to specifying certain flags under the compiler
3195             # specific filters, they must be specified here as well or else the
3196             # generic catch all at the bottom will print the original flag.
3197             -Wall)                ;;
3198             -Wextra)              ;;
3199             -std=c99)             ;;
3200             # Common flags
3201             -fomit-frame-pointer) ;;
3202             -g)                   echo -Z7 ;;
3203             -fno-math-errno)      ;;
3204             -fno-common)          ;;
3205             -fno-signed-zeros)    ;;
3206             -fPIC)                ;;
3207             -mthumb)              ;;
3208             -march=*)             ;;
3209             -lz)                  echo zlib.lib ;;
3210             -lx264)               echo libx264.lib ;;
3211             -l*)                  echo ${flag#-l}.lib ;;
3212             -L*)                  echo -libpath:${flag#-L} ;;
3213             *)                    echo $flag ;;
3214         esac
3215     done
3216 }
3217
3218 msvc_flags(){
3219     msvc_common_flags "$@"
3220     for flag; do
3221         case $flag in
3222             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3223                                        -wd4554 ;;
3224             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3225                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3226                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3227                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3228         esac
3229     done
3230 }
3231
3232 icl_flags(){
3233     msvc_common_flags "$@"
3234     for flag; do
3235         case $flag in
3236             # Despite what Intel's documentation says -Wall, which is supported
3237             # on Windows, does enable remarks so disable them here.
3238             -Wall)                echo $flag -Qdiag-disable:remark ;;
3239             -std=c99)             echo -Qstd=c99 ;;
3240         esac
3241     done
3242 }
3243
3244 pgi_flags(){
3245     for flag; do
3246         case $flag in
3247             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3248             -fomit-frame-pointer) echo -Mnoframe ;;
3249             -g)                   echo -gopt ;;
3250             *)                    echo $flag ;;
3251         esac
3252     done
3253 }
3254
3255 suncc_flags(){
3256     for flag; do
3257         case $flag in
3258             -march=*|-mcpu=*)
3259                 case "${flag#*=}" in
3260                     native)                   echo -xtarget=native       ;;
3261                     v9|niagara)               echo -xarch=sparc          ;;
3262                     ultrasparc)               echo -xarch=sparcvis       ;;
3263                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3264                     i586|pentium)             echo -xchip=pentium        ;;
3265                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3266                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3267                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3268                     pentium4*)          echo -xtarget=pentium4           ;;
3269                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3270                     *-sse3)             echo -xarch=sse3                 ;;
3271                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3272                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3273                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3274                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3275                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3276                     k8|opteron|athlon64|athlon-fx)
3277                                                echo -xarch=sse2a         ;;
3278                     athlon*)                   echo -xarch=pentium_proa  ;;
3279                 esac
3280                 ;;
3281             -std=c99)             echo -xc99              ;;
3282             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3283             -fPIC)                echo -KPIC -xcode=pic32 ;;
3284             -W*,*)                echo $flag              ;;
3285             -f*-*|-W*|-mimpure-text)                      ;;
3286             -shared)              echo -G                 ;;
3287             *)                    echo $flag              ;;
3288         esac
3289     done
3290 }
3291
3292 tms470_flags(){
3293     for flag; do
3294         case $flag in
3295             -march=*|-mcpu=*)
3296                 case "${flag#*=}" in
3297                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3298                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3299                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3300                     armv6*|arm11*)          echo -mv=6   ;;
3301                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3302                                             echo -mv=5e  ;;
3303                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3304                 esac
3305                 ;;
3306             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3307             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3308             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3309             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3310             -msoft-float)   echo --float_support=vfplib       ;;
3311             -O[0-3]|-mf=*)  echo $flag                        ;;
3312             -g)             echo -g -mn                       ;;
3313             -pds=*)         echo $flag                        ;;
3314             -D*|-I*)        echo $flag                        ;;
3315             --gcc|--abi=*)  echo $flag                        ;;
3316             -me)            echo $flag                        ;;
3317         esac
3318     done
3319 }
3320
3321 probe_cc(){
3322     pfx=$1
3323     _cc=$2
3324
3325     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3326     unset _ld_o _ldflags _ld_lib _ld_path
3327     unset _depflags _DEPCMD _DEPFLAGS
3328     _flags_filter=echo
3329
3330     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3331         _type=llvm_gcc
3332         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3333         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3334         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3335         _cflags_speed='-O3'
3336         _cflags_size='-Os'
3337     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3338         _type=gcc
3339         gcc_version=$($_cc --version | head -n1)
3340         gcc_basever=$($_cc -dumpversion)
3341         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3342         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3343         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3344         if ! $_cc -dumpversion | grep -q '^2\.'; then
3345             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3346         fi
3347         _cflags_speed='-O3'
3348         _cflags_size='-Os'
3349     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3350         _type=icc
3351         _ident=$($_cc --version | head -n1)
3352         _depflags='-MMD'
3353         _cflags_speed='-O3'
3354         _cflags_size='-Os'
3355         _cflags_noopt='-O1'
3356     elif $_cc -v 2>&1 | grep -q xlc; then
3357         _type=xlc
3358         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3359         _cflags_speed='-O5'
3360         _cflags_size='-O5 -qcompact'
3361     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3362         _type=ccc
3363         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3364         _DEPFLAGS='-M'
3365         _cflags_speed='-fast'
3366         _cflags_size='-O1'
3367         _flags_filter=ccc_flags
3368     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3369         test -d "$sysroot" || die "No valid sysroot specified."
3370         _type=armcc
3371         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3372         armcc_conf="$PWD/armcc.conf"
3373         $_cc --arm_linux_configure                 \
3374              --arm_linux_config_file="$armcc_conf" \
3375              --configure_sysroot="$sysroot"        \
3376              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3377              die "Error creating armcc configuration file."
3378         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3379         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3380         as_default="${cross_prefix}gcc"
3381         _depflags='-MMD'
3382         _cflags_speed='-O3'
3383         _cflags_size='-Os'
3384     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3385         _type=tms470
3386         _ident=$($_cc -version | head -n1 | tr -s ' ')
3387         _flags='--gcc --abi=eabi -me'
3388         _cc_e='-ppl -fe=$@'
3389         _cc_o='-fe=$@'
3390         _depflags='-ppa -ppd=$(@:.o=.d)'
3391         _cflags_speed='-O3 -mf=5'
3392         _cflags_size='-O3 -mf=2'
3393         _flags_filter=tms470_flags
3394     elif $_cc -v 2>&1 | grep -q clang; then
3395         _type=clang
3396         _ident=$($_cc --version 2>/dev/null | head -n1)
3397         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3398         _cflags_speed='-O3'
3399         _cflags_size='-Os'
3400     elif $_cc -V 2>&1 | grep -q Sun; then
3401         _type=suncc
3402         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3403         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3404         _DEPFLAGS='-xM1 -xc99'
3405         _ldflags='-std=c99'
3406         _cflags_speed='-O5'
3407         _cflags_size='-O5 -xspace'
3408         _flags_filter=suncc_flags
3409     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3410         _type=pathscale
3411         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3412         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3413         _cflags_speed='-O2'
3414         _cflags_size='-Os'
3415         _flags_filter='filter_out -Wdisabled-optimization'
3416     elif $_cc -v 2>&1 | grep -q Open64; then
3417         _type=open64
3418         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3419         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3420         _cflags_speed='-O2'
3421         _cflags_size='-Os'
3422         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3423     elif $_cc -V 2>&1 | grep -q Portland; then
3424         _type=pgi
3425         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3426         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3427         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3428         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3429         _cflags_noopt="-O1"
3430         _flags_filter=pgi_flags
3431     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3432         _type=armasm
3433         _ident=$($_cc | head -n1)
3434         # 4509: "This form of conditional instruction is deprecated"
3435         _flags="-nologo -ignore 4509"
3436         _flags_filter=armasm_flags
3437     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3438         _type=msvc
3439         _ident=$($_cc 2>&1 | head -n1)
3440         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3441         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3442         _cflags_speed="-O2"
3443         _cflags_size="-O1"
3444         _cflags_noopt="-O1"
3445         if $_cc -nologo- 2>&1 | grep -q Linker; then
3446             _ld_o='-out:$@'
3447         else
3448             _ld_o='-Fe$@'
3449         fi
3450         _cc_o='-Fo$@'
3451         _cc_e='-P -Fi$@'
3452         _flags_filter=msvc_flags
3453         _ld_lib='lib%.a'
3454         _ld_path='-libpath:'
3455         _flags='-nologo'
3456     elif $_cc 2>&1 | grep -q Intel; then
3457         _type=icl
3458         _ident=$($_cc 2>&1 | head -n1)
3459         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3460         # Not only is O3 broken on 13.x+ but it is slower on all previous
3461         # versions (tested) as well.
3462         _cflags_speed="-O2"
3463         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3464         if $_cc 2>&1 | grep -q Linker; then
3465             _ld_o='-out:$@'
3466         else
3467             _ld_o='-Fe$@'
3468         fi
3469         _cc_o='-Fo$@'
3470         _cc_e='-P'
3471         _flags_filter=icl_flags
3472         _ld_lib='lib%.a'
3473         _ld_path='-libpath:'
3474         # -Qdiag-error to make icl error when seeing certain unknown arguments
3475         _flags='-nologo -Qdiag-error:4044,10157'
3476         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3477         # with MSVC which enables it by default.
3478         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3479     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3480         # lld can emulate multiple different linkers; in ms link.exe mode,
3481         # the -? parameter gives the help output which contains an identifyable
3482         # string, while it gives an error in other modes.
3483         _type=lld-link
3484         # The link.exe mode doesn't have a switch for getting the version,
3485         # but we can force it back to gnu mode and get the version from there.
3486         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3487         _ld_o='-out:$@'
3488         _flags_filter=msvc_flags
3489         _ld_lib='lib%.a'
3490         _ld_path='-libpath:'
3491     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3492         _type=cparser
3493         _ident=$($_cc --version | head -n1)
3494         _depflags='-MMD'
3495         _cflags_speed='-O4'
3496         _cflags_size='-O2'
3497         _flags_filter=cparser_flags
3498     fi
3499
3500     eval ${pfx}_type=\$_type
3501     eval ${pfx}_ident=\$_ident
3502 }
3503
3504 set_ccvars(){
3505     eval ${1}_C=\${_cc_c-\${${1}_C}}
3506     eval ${1}_E=\${_cc_e-\${${1}_E}}
3507     eval ${1}_O=\${_cc_o-\${${1}_O}}
3508
3509     if [ -n "$_depflags" ]; then
3510         eval ${1}_DEPFLAGS=\$_depflags
3511     else
3512         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3513         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3514         eval DEP${1}FLAGS=\$_flags
3515     fi
3516 }
3517
3518 probe_cc cc "$cc"
3519 cflags_filter=$_flags_filter
3520 cflags_speed=$_cflags_speed
3521 cflags_size=$_cflags_size
3522 cflags_noopt=$_cflags_noopt
3523 add_cflags $_flags $_cflags
3524 cc_ldflags=$_ldflags
3525 set_ccvars CC
3526
3527 probe_cc hostcc "$host_cc"
3528 host_cflags_filter=$_flags_filter
3529 host_cflags_speed=$_cflags_speed
3530 add_host_cflags  $_flags $_cflags
3531 set_ccvars HOSTCC
3532
3533 test -n "$cc_type" && enable $cc_type ||
3534     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3535
3536 : ${as_default:=$cc}
3537 : ${objcc_default:=$cc}
3538 : ${dep_cc_default:=$cc}
3539 : ${ld_default:=$cc}
3540 : ${host_ld_default:=$host_cc}
3541 set_default ar as objcc dep_cc ld host_ld
3542
3543 probe_cc as "$as"
3544 asflags_filter=$_flags_filter
3545 add_asflags $_flags $_cflags
3546 set_ccvars AS
3547
3548 probe_cc objcc "$objcc"
3549 objcflags_filter=$_flags_filter
3550 add_objcflags $_flags $_cflags
3551 set_ccvars OBJC
3552
3553 probe_cc ld "$ld"
3554 ldflags_filter=$_flags_filter
3555 add_ldflags $_flags $_ldflags
3556 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3557 LD_O=${_ld_o-$LD_O}
3558 LD_LIB=${_ld_lib-$LD_LIB}
3559 LD_PATH=${_ld_path-$LD_PATH}
3560
3561 probe_cc hostld "$host_ld"
3562 host_ldflags_filter=$_flags_filter
3563 add_host_ldflags $_flags $_ldflags
3564 HOSTLD_O=${_ld_o-$HOSTLD_O}
3565
3566 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3567     probe_cc depcc "$dep_cc"
3568     CCDEP=${_DEPCMD:-$DEPCMD}
3569     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3570     DEPCCFLAGS=$_flags
3571 fi
3572
3573 if $ar 2>&1 | grep -q Microsoft; then
3574     arflags="-nologo"
3575     ar_o='-out:$@'
3576 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3577     arflags="rq"
3578     ar_o='$@'
3579 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3580     arflags='-Xany -r -c'
3581     ar_o='$@'
3582 else
3583     arflags="rc"
3584     ar_o='$@'
3585 fi
3586
3587 add_cflags $extra_cflags
3588 add_objcflags $extra_objcflags
3589 add_asflags $extra_cflags
3590
3591 if test -n "$sysroot"; then
3592     case "$cc_type" in
3593         gcc|llvm_gcc|clang)
3594             add_cppflags --sysroot="$sysroot"
3595             add_ldflags --sysroot="$sysroot"
3596         ;;
3597         tms470)
3598             add_cppflags -I"$sysinclude"
3599             add_ldflags  --sysroot="$sysroot"
3600         ;;
3601     esac
3602 fi
3603
3604 if test "$cpu" = host; then
3605     enabled cross_compile &&
3606         die "--cpu=host makes no sense when cross-compiling."
3607
3608     case "$cc_type" in
3609         gcc|llvm_gcc)
3610             check_native(){
3611                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3612                 sed -n "/cc1.*$1=/{
3613                             s/.*$1=\\([^ ]*\\).*/\\1/
3614                             p
3615                             q
3616                         }" $TMPE
3617             }
3618             cpu=$(check_native -march || check_native -mcpu)
3619         ;;
3620     esac
3621
3622     test "${cpu:-host}" = host &&
3623         die "--cpu=host not supported with compiler $cc"
3624 fi
3625
3626 # Deal with common $arch aliases
3627 case "$arch" in
3628     aarch64|arm64)
3629         arch="aarch64"
3630     ;;
3631     arm*)
3632         arch="arm"
3633     ;;
3634     mips*|IP*)
3635         case "$arch" in
3636         *el)
3637             add_cppflags -EL
3638             add_ldflags -EL
3639         ;;
3640         *eb)
3641             add_cppflags -EB
3642             add_ldflags -EB
3643         ;;
3644         esac
3645         arch="mips"
3646     ;;
3647     parisc*|hppa*)
3648         arch="parisc"
3649     ;;
3650     "Power Macintosh"|ppc*|powerpc*)
3651         arch="ppc"
3652     ;;
3653     s390|s390x)
3654         arch="s390"
3655     ;;
3656     sh4|sh)
3657         arch="sh4"
3658     ;;
3659     sun4u|sparc*)
3660         arch="sparc"
3661     ;;
3662     tilegx|tile-gx)
3663         arch="tilegx"
3664     ;;
3665     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3666         arch="x86"
3667     ;;
3668 esac
3669
3670 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3671 enable $arch
3672
3673 # Add processor-specific flags
3674 if enabled aarch64; then
3675
3676     case $cpu in
3677         armv*)
3678             cpuflags="-march=$cpu"
3679         ;;
3680         *)
3681             cpuflags="-mcpu=$cpu"
3682         ;;
3683     esac
3684
3685 elif enabled alpha; then
3686
3687     cpuflags="-mcpu=$cpu"
3688
3689 elif enabled arm; then
3690
3691     check_arm_arch() {
3692         check_cpp_condition stddef.h \
3693             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3694             $cpuflags
3695     }
3696
3697     probe_arm_arch() {
3698         if   check_arm_arch 4;        then echo armv4
3699         elif check_arm_arch 4T;       then echo armv4t
3700         elif check_arm_arch 5;        then echo armv5
3701         elif check_arm_arch 5E;       then echo armv5e
3702         elif check_arm_arch 5T;       then echo armv5t
3703         elif check_arm_arch 5TE;      then echo armv5te
3704         elif check_arm_arch 5TEJ;     then echo armv5te
3705         elif check_arm_arch 6;        then echo armv6
3706         elif check_arm_arch 6J;       then echo armv6j
3707         elif check_arm_arch 6K;       then echo armv6k
3708         elif check_arm_arch 6Z;       then echo armv6z
3709         elif check_arm_arch 6ZK;      then echo armv6zk
3710         elif check_arm_arch 6T2;      then echo armv6t2
3711         elif check_arm_arch 7;        then echo armv7
3712         elif check_arm_arch 7A  7_A;  then echo armv7-a
3713         elif check_arm_arch 7S;       then echo armv7-a
3714         elif check_arm_arch 7R  7_R;  then echo armv7-r
3715         elif check_arm_arch 7M  7_M;  then echo armv7-m
3716         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3717         elif check_arm_arch 8A  8_A;  then echo armv8-a
3718         fi
3719     }
3720
3721     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3722
3723     case $cpu in
3724         armv*)
3725             cpuflags="-march=$cpu"
3726             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3727         ;;
3728         *)
3729             cpuflags="-mcpu=$cpu"
3730             case $cpu in
3731                 cortex-a*)                               subarch=armv7a  ;;
3732                 cortex-r*)                               subarch=armv7r  ;;
3733                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3734                 arm11*)                                  subarch=armv6   ;;
3735                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3736                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3737                 *)                             subarch=$(probe_arm_arch) ;;
3738             esac
3739         ;;
3740     esac
3741
3742     case "$subarch" in
3743         armv5t*)    enable fast_clz                ;;
3744         armv[6-8]*) enable fast_clz fast_unaligned ;;
3745     esac
3746
3747 elif enabled avr32; then
3748
3749     case $cpu in
3750         ap7[02]0[0-2])
3751             subarch="avr32_ap"
3752             cpuflags="-mpart=$cpu"
3753         ;;
3754         ap)
3755             subarch="avr32_ap"
3756             cpuflags="-march=$cpu"
3757         ;;
3758         uc3[ab]*)
3759             subarch="avr32_uc"
3760             cpuflags="-mcpu=$cpu"
3761         ;;
3762         uc)
3763             subarch="avr32_uc"
3764             cpuflags="-march=$cpu"
3765         ;;
3766     esac
3767
3768 elif enabled bfin; then
3769
3770     cpuflags="-mcpu=$cpu"
3771
3772 elif enabled mips; then
3773
3774     cpuflags="-march=$cpu"
3775
3776 elif enabled ppc; then
3777
3778     disable ldbrx
3779
3780     case $(tolower $cpu) in
3781         601|ppc601|powerpc601)
3782             cpuflags="-mcpu=601"
3783             disable altivec
3784         ;;
3785         603*|ppc603*|powerpc603*)
3786             cpuflags="-mcpu=603"
3787             disable altivec
3788         ;;
3789         604*|ppc604*|powerpc604*)
3790             cpuflags="-mcpu=604"
3791             disable altivec
3792         ;;
3793         g3|75*|ppc75*|powerpc75*)
3794             cpuflags="-mcpu=750"
3795             disable altivec
3796         ;;
3797         g4|745*|ppc745*|powerpc745*)
3798             cpuflags="-mcpu=7450"
3799             disable vsx
3800         ;;
3801         74*|ppc74*|powerpc74*)
3802             cpuflags="-mcpu=7400"
3803             disable vsx
3804         ;;
3805         g5|970|ppc970|powerpc970)
3806             cpuflags="-mcpu=970"
3807             disable vsx
3808         ;;
3809         power[3-6]*)
3810             cpuflags="-mcpu=$cpu"
3811             disable vsx
3812         ;;
3813         power[7-8]*)
3814             cpuflags="-mcpu=$cpu"
3815             enable ldbrx
3816         ;;
3817         cell)
3818             cpuflags="-mcpu=cell"
3819             enable ldbrx
3820             disable vsx
3821         ;;
3822         e500mc)
3823             cpuflags="-mcpu=e500mc"
3824             disable altivec
3825         ;;
3826         e500v2)
3827             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3828             disable altivec
3829             disable dcbzl
3830         ;;
3831         e500)
3832             cpuflags="-mcpu=8540 -mhard-float"
3833             disable altivec
3834             disable dcbzl
3835         ;;
3836     esac
3837
3838 elif enabled sparc; then
3839
3840     case $cpu in
3841         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3842             cpuflags="-mcpu=$cpu"
3843         ;;
3844         ultrasparc*|niagara[234])
3845             cpuflags="-mcpu=$cpu"
3846         ;;
3847     esac
3848
3849 elif enabled x86; then
3850
3851     case $cpu in
3852         i[345]86|pentium)
3853             cpuflags="-march=$cpu"
3854             disable i686
3855             disable mmx
3856         ;;
3857         # targets that do NOT support nopl and conditional mov (cmov)
3858         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3859             cpuflags="-march=$cpu"
3860             disable i686
3861         ;;
3862         # targets that do support nopl and conditional mov (cmov)
3863         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3864             cpuflags="-march=$cpu"
3865             enable i686
3866             enable fast_cmov
3867         ;;
3868         # targets that do support conditional mov but on which it's slow
3869         pentium4|pentium4m|prescott|nocona)
3870             cpuflags="-march=$cpu"
3871             enable i686
3872             disable fast_cmov
3873         ;;
3874     esac
3875
3876 fi
3877
3878 if [ "$cpu" != generic ]; then
3879     add_cflags  $cpuflags
3880     add_asflags $cpuflags
3881     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3882 fi
3883
3884 # compiler sanity check
3885 check_exec <<EOF
3886 int main(void){ return 0; }
3887 EOF
3888 if test "$?" != 0; then
3889     echo "$cc is unable to create an executable file."
3890     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3891         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3892         echo "Only do this if you know what cross compiling means."
3893     fi
3894     die "C compiler test failed."
3895 fi
3896
3897 add_cppflags -D_ISOC99_SOURCE
3898
3899 # some compilers silently accept -std=c11, so we also need to check that the
3900 # version macro is defined properly
3901 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3902     add_cflags -std=c11 ||
3903     check_cflags -std=c99
3904
3905 check_cppflags -D_FILE_OFFSET_BITS=64
3906 check_cppflags -D_LARGEFILE_SOURCE
3907
3908 add_host_cppflags -D_ISOC99_SOURCE
3909 check_host_cflags -std=c99
3910 check_host_cflags -Wall
3911 check_host_cflags $host_cflags_speed
3912
3913 check_64bit(){
3914     arch32=$1
3915     arch64=$2
3916     expr=$3
3917     check_code cc "" "int test[2*($expr) - 1]" &&
3918         subarch=$arch64 || subarch=$arch32
3919 }
3920
3921 case "$arch" in
3922     aarch64|alpha|ia64)
3923         spic=$shared
3924     ;;
3925     mips)
3926         check_64bit mips mips64 '_MIPS_SIM > 1'
3927         spic=$shared
3928     ;;
3929     parisc)
3930         check_64bit parisc parisc64 'sizeof(void *) > 4'
3931         spic=$shared
3932     ;;
3933     ppc)
3934         check_64bit ppc ppc64 'sizeof(void *) > 4'
3935         spic=$shared
3936     ;;
3937     s390)
3938         check_64bit s390 s390x 'sizeof(void *) > 4'
3939         spic=$shared
3940     ;;
3941     sparc)
3942         check_64bit sparc sparc64 'sizeof(void *) > 4'
3943         spic=$shared
3944     ;;
3945     x86)
3946         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3947         if test "$subarch" = "x86_64"; then
3948             spic=$shared
3949         fi
3950     ;;
3951 esac
3952
3953 enable $subarch
3954 enabled spic && enable_weak pic
3955
3956 enabled x86_64 && objformat=elf64 || objformat="elf32"
3957
3958 # OS specific
3959 case $target_os in
3960     aix)
3961         SHFLAGS=-shared
3962         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3963         enabled shared && add_ldflags -Wl,-brtl
3964         ;;
3965     android)
3966         disable symver
3967         enable section_data_rel_ro
3968         SLIB_INSTALL_NAME='$(SLIBNAME)'
3969         SLIB_INSTALL_LINKS=
3970         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3971         ;;
3972     haiku)
3973         prefix_default="/boot/common"
3974         network_extralibs="-lnetwork"
3975         host_extralibs=
3976         ;;
3977     sunos)
3978         SHFLAGS='-shared -Wl,-h,$$(@F)'
3979         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3980         network_extralibs="-lsocket -lnsl"
3981         # When using suncc to build, the Solaris linker will mark
3982         # an executable with each instruction set encountered by
3983         # the Solaris assembler.  As our libraries contain their own
3984         # guards for processor-specific code, instead suppress
3985         # generation of the HWCAPS ELF section on Solaris x86 only.
3986         enabled_all suncc x86 &&
3987             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3988             add_ldflags -Wl,-M,mapfile
3989         nm_default='nm -P -g'
3990         version_script='-M'
3991         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3992         ;;
3993     netbsd)
3994         disable symver
3995         oss_indev_extralibs="-lossaudio"
3996         oss_outdev_extralibs="-lossaudio"
3997         ;;
3998     openbsd|bitrig)
3999         disable symver
4000         SHFLAGS='-shared'
4001         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4002         SLIB_INSTALL_LINKS=
4003         oss_indev_extralibs="-lossaudio"
4004         oss_outdev_extralibs="-lossaudio"
4005         ;;
4006     dragonfly)
4007         disable symver
4008         ;;
4009     freebsd)
4010         ;;
4011     bsd/os)
4012         add_extralibs -lpoll -lgnugetopt
4013         ;;
4014     darwin)
4015         enabled ppc && add_asflags -force_cpusubtype_ALL
4016         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4017         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4018         add_ldflags -Wl,-dynamic,-search_paths_first
4019         check_cflags -Werror=partial-availability
4020         SLIBSUF=".dylib"
4021         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
4022         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
4023         enabled x86_64 && objformat="macho64" || objformat="macho32"
4024         enabled_any pic shared ||
4025             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4026         check_header dispatch/dispatch.h &&
4027             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4028         if test -n "$sysroot"; then
4029             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4030             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4031         fi
4032         ;;
4033     msys*)
4034         die "Native MSYS builds are discouraged, please use the MINGW environment."
4035         ;;
4036     mingw32*|mingw64*)
4037         target_os=mingw32
4038         LIBTARGET=i386
4039         if enabled x86_64; then
4040             LIBTARGET="i386:x86-64"
4041         fi
4042         if enabled shared; then
4043             # Cannot build both shared and static libs when using dllexport.
4044             disable static
4045         fi
4046         check_ldflags -Wl,--nxcompat
4047         check_ldflags -Wl,--dynamicbase
4048         shlibdir_default="$bindir_default"
4049         SLIBPREF=""
4050         SLIBSUF=".dll"
4051         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4052         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4053         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4054         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4055         SLIB_INSTALL_LINKS=
4056         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4057         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4058         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4059         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
4060         enabled x86_64 && objformat="win64" || objformat="win32"
4061         dlltool="${cross_prefix}dlltool"
4062         ranlib=:
4063         enable dos_paths
4064         ;;
4065     win32|win64)
4066         disable symver
4067         if enabled shared; then
4068             # Link to the import library instead of the normal static library
4069             # for shared libs.
4070             LD_LIB='%.lib'
4071             # Cannot build both shared and static libs with MSVC or icl.
4072             disable static
4073         fi
4074         shlibdir_default="$bindir_default"
4075         SLIBPREF=""
4076         SLIBSUF=".dll"
4077         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4078         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4079         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4080         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4081         SLIB_INSTALL_LINKS=
4082         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4083         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4084         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4085         enabled x86_64 && objformat="win64" || objformat="win32"
4086         ranlib=:
4087         enable dos_paths
4088         ;;
4089     cygwin*)
4090         target_os=cygwin
4091         shlibdir_default="$bindir_default"
4092         SLIBPREF="cyg"
4093         SLIBSUF=".dll"
4094         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4095         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4096         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4097         SLIB_INSTALL_LINKS=
4098         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4099         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4100         enabled x86_64 && objformat="win64" || objformat="win32"
4101         enable dos_paths
4102         ;;
4103     *-dos|freedos|opendos)
4104         network_extralibs="-lsocket"
4105         objformat="coff"
4106         enable dos_paths
4107         add_cppflags -U__STRICT_ANSI__
4108         ;;
4109     linux)
4110         enable dv1394
4111         enable section_data_rel_ro
4112         ;;
4113     irix*)
4114         target_os=irix
4115         ranlib="echo ignoring ranlib"
4116         ;;
4117     os/2*)
4118         ln_s="cp -f"
4119         objformat="aout"
4120         add_cppflags -D_GNU_SOURCE
4121         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4122         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4123         LIBSUF="_s.a"
4124         SLIBPREF=""
4125         SLIBSUF=".dll"
4126         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4127         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4128         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4129             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4130             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4131             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4132             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4133         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4134             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4135         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4136         enable dos_paths
4137         ;;
4138     gnu/kfreebsd)
4139         add_cppflags -D_BSD_SOURCE
4140         ;;
4141     gnu)
4142         ;;
4143     qnx)
4144         add_cppflags -D_QNX_SOURCE
4145         network_extralibs="-lsocket"
4146         ;;
4147     symbian)
4148         SLIBSUF=".dll"
4149         enable dos_paths
4150         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4151         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4152         add_ldflags -Wl,--target1-abs,--no-undefined \
4153                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4154                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4155         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4156                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4157                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4158         ;;
4159     osf1)
4160         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4161         ;;
4162     minix)
4163         ;;
4164     none)
4165         ;;
4166     *)
4167         die "Unknown OS '$target_os'."
4168         ;;
4169 esac
4170
4171 # determine libc flavour
4172
4173 probe_libc(){
4174     pfx=$1
4175     pfx_no_=${pfx%_}
4176     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4177     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4178         eval ${pfx}libc_type=uclibc
4179         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4180     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4181         eval ${pfx}libc_type=glibc
4182         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4183     # MinGW headers can be installed on Cygwin, so check for newlib first.
4184     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4185         eval ${pfx}libc_type=newlib
4186         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4187     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4188     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4189         eval ${pfx}libc_type=mingw64
4190         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4191         eval test \$${pfx_no_}cc_type = "gcc" &&
4192             add_${pfx}cppflags -D__printf__=__gnu_printf__
4193     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4194          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4195         eval ${pfx}libc_type=mingw32
4196         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4197             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4198             die "ERROR: MinGW32 runtime version must be >= 3.15."
4199         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4200         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4201             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4202         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4203             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4204         eval test \$${pfx_no_}cc_type = "gcc" &&
4205             add_${pfx}cppflags -D__printf__=__gnu_printf__
4206     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4207         eval ${pfx}libc_type=msvcrt
4208         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4209             if [ "$pfx" = host_ ]; then
4210                 add_host_cppflags -Dsnprintf=_snprintf
4211             else
4212                 add_compat strtod.o strtod=avpriv_strtod
4213                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4214                                              _snprintf=avpriv_snprintf  \
4215                                              vsnprintf=avpriv_vsnprintf
4216             fi
4217         fi
4218         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4219         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4220         # 0x601 by default unless something else is set by the user.
4221         # This can easily lead to us detecting functions only present
4222         # in such new versions and producing binaries requiring windows 7.0.
4223         # Therefore explicitly set the default to XP unless the user has
4224         # set something else on the command line.
4225         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4226         # family. For these cases, configure is free to use any functions
4227         # found in the SDK headers by default. (Alternatively, we could force
4228         # _WIN32_WINNT to 0x0602 in that case.)
4229         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4230             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4231 #ifdef WINAPI_FAMILY
4232 #include <winapifamily.h>
4233 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4234 #error not desktop
4235 #endif
4236 #endif
4237 EOF
4238         if [ "$pfx" = "" ]; then
4239             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4240         fi
4241     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4242         eval ${pfx}libc_type=klibc
4243     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4244         eval ${pfx}libc_type=bionic
4245     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4246         eval ${pfx}libc_type=solaris
4247         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4248     else
4249         eval ${pfx}libc_type=default
4250         add_${pfx}cppflags -D_DEFAULT_SOURCE
4251     fi
4252 }
4253
4254 probe_libc
4255 test -n "$libc_type" && enable libc_$libc_type
4256 probe_libc host_
4257 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4258
4259 # hacks for compiler/libc/os combinations
4260
4261 case $libc_type in
4262     bionic)
4263         add_compat strtod.o strtod=avpriv_strtod
4264         ;;
4265     glibc)
4266         if enabled tms470; then
4267             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4268             add_cppflags -D__USER_LABEL_PREFIX__=
4269             add_cppflags -D__builtin_memset=memset
4270             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4271             add_cflags   -pds=48    # incompatible redefinition of macro
4272         elif enabled ccc; then
4273             add_ldflags -Wl,-z,now  # calls to libots crash without this
4274         fi
4275         ;;
4276 esac
4277
4278 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4279     add_cppflags '-I\$(SRC_PATH)/compat/float'
4280
4281 esc(){
4282     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4283 }
4284
4285 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4286
4287 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4288
4289 set_default $PATHS_LIST
4290 set_default nm
4291
4292 # we need to build at least one lib type
4293 if ! enabled_any static shared; then
4294     cat <<EOF
4295 At least one library type must be built.
4296 Specify --enable-static to build the static libraries or --enable-shared to
4297 build the shared libraries as well. To only build the shared libraries specify
4298 --disable-static in addition to --enable-shared.
4299 EOF
4300     exit 1
4301 fi
4302
4303 disabled optimizations || check_cflags -fomit-frame-pointer
4304
4305 enable_weak_pic() {
4306     disabled pic && return
4307     enable pic
4308     add_cppflags -DPIC
4309     case "$target_os" in
4310     mingw*|cygwin*)
4311         ;;
4312     *)
4313         add_cflags -fPIC
4314         ;;
4315     esac
4316     add_asflags  -fPIC
4317 }
4318
4319 enabled pic && enable_weak_pic
4320
4321 check_cc <<EOF || die "Symbol mangling check failed."
4322 int ff_extern;
4323 EOF
4324 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4325 extern_prefix=${sym%%ff_extern*}
4326
4327 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4328
4329 _restrict=
4330 for restrict_keyword in restrict __restrict__ __restrict; do
4331     check_cc <<EOF && _restrict=$restrict_keyword && break
4332 void foo(char * $restrict_keyword p);
4333 EOF
4334 done
4335
4336 check_cc <<EOF && enable pragma_deprecated
4337 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4338 EOF
4339
4340 check_cc <<EOF && enable attribute_packed
4341 struct { int x; } __attribute__((packed)) x;
4342 EOF
4343
4344 check_cc <<EOF && enable attribute_may_alias
4345 union { int x; } __attribute__((may_alias)) x;
4346 EOF
4347
4348 check_cc <<EOF || die "endian test failed"
4349 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4350 EOF
4351 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4352
4353 check_gas() {
4354     log "check_gas using '$as' as AS"
4355     # :vararg is used on aarch64, arm and ppc altivec
4356     check_as <<EOF || return 1
4357 .macro m n, y:vararg=0
4358 \n: .int \y
4359 .endm
4360 m x
4361 EOF
4362     # .altmacro is only used in arm asm
4363     ! enabled arm || check_as <<EOF || return 1
4364 .altmacro
4365 EOF
4366     enable gnu_as
4367     return 0
4368 }
4369
4370 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4371     nogas=:
4372     enabled_any arm aarch64 && nogas=die
4373     enabled_all ppc altivec && nogas=warn
4374     as_noop=-v
4375
4376     case $as_type in
4377         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4378         gcc)  gaspp_as_type=gas ;;
4379         *)    gaspp_as_type=$as_type ;;
4380     esac
4381
4382     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4383
4384     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4385         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4386
4387     if ! check_gas ; then
4388         as=${gas:=$as}
4389         check_gas || \
4390             $nogas "GNU assembler not found, install/update gas-preprocessor"
4391     fi
4392
4393     check_as <<EOF && enable as_func
4394 .func test
4395 .endfunc
4396 EOF
4397 fi
4398
4399 check_inline_asm inline_asm_labels '"1:\n"'
4400
4401 if enabled aarch64; then
4402     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4403     # internal assembler in clang 3.3 does not support this instruction
4404     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4405     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4406
4407     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4408
4409 elif enabled alpha; then
4410
4411     check_cflags -mieee
4412
4413 elif enabled arm; then
4414
4415     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4416     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4417     enabled thumb && check_cflags -mthumb || check_cflags -marm
4418
4419     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4420         enable vfp_args
4421     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4422         enable vfp_args
4423     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4424         case "${cross_prefix:-$cc}" in
4425             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4426             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4427 __asm__ (".eabi_attribute 28, 1");
4428 int main(void) { return 0; }
4429 EOF
4430         esac
4431         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4432     fi
4433
4434     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4435     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4436     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4437     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4438     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4439     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4440
4441     [ $target_os = linux ] || [ $target_os = android ] ||
4442         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4443             $ARCH_EXT_LIST_ARM
4444
4445     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4446
4447     check_as <<EOF && enable as_arch_directive
4448 .arch armv7-a
4449 EOF
4450     check_as <<EOF && enable as_fpu_directive
4451 .fpu neon
4452 EOF
4453
4454     # llvm's integrated assembler supports .object_arch from llvm 3.5
4455     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4456         check_as <<EOF && enable as_object_arch
4457 .object_arch armv4
4458 EOF
4459
4460     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4461
4462 elif enabled mips; then
4463
4464     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4465
4466     # make sure that only an instruction set is enabled
4467     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4468
4469     if enabled mips64; then
4470         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4471             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4472                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4473     else
4474         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4475             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4476                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4477     fi
4478
4479 elif enabled parisc; then
4480
4481     if enabled gcc; then
4482         case $($cc -dumpversion) in
4483             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4484         esac
4485     fi
4486
4487 elif enabled ppc; then
4488
4489     enable local_aligned_8 local_aligned_16 local_aligned_32
4490
4491     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4492     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4493     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4494     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4495
4496     if enabled altivec; then
4497         check_cflags -maltivec -mabi=altivec
4498
4499         # check if our compiler supports Motorola AltiVec C API
4500         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4501                                  vector signed int v2 = (vector signed int) { 1 };
4502                                  v1 = vec_add(v1, v2);" ||
4503             disable altivec
4504
4505         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4506     fi
4507
4508     if enabled vsx; then
4509         check_cflags -mvsx &&
4510         check_code cc altivec.h "int v[4] = { 0 };
4511                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4512             disable vsx
4513     fi
4514
4515     if enabled power8; then
4516         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4517     fi
4518
4519 elif enabled x86; then
4520
4521     check_builtin rdtsc    intrin.h   "__rdtsc()"
4522     check_builtin mm_empty mmintrin.h "_mm_empty()"
4523
4524     enable local_aligned_8 local_aligned_16 local_aligned_32
4525
4526     # check whether EBP is available on x86
4527     # As 'i' is stored on the stack, this program will crash
4528     # if the base pointer is used to access it because the
4529     # base pointer is cleared in the inline assembly code.
4530     check_exec_crash <<EOF && enable ebp_available
4531 volatile int i=0;
4532 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4533 return i;
4534 EOF
4535
4536     # check whether EBX is available on x86
4537     check_inline_asm ebx_available '""::"b"(0)' &&
4538         check_inline_asm ebx_available '"":::"%ebx"'
4539
4540     # check whether xmm clobbers are supported
4541     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4542
4543     # check whether binutils is new enough to compile SSSE3/MMXEXT
4544     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4545     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4546
4547     probe_x86asm(){
4548         x86asmexe_probe=$1
4549         if check_cmd $x86asmexe_probe -v; then
4550             x86asmexe=$x86asmexe_probe
4551             x86asm_type=nasm
4552             x86asm_debug="-g -F dwarf"
4553             X86ASMDEP=
4554             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4555         elif check_cmd $x86asmexe_probe --version; then
4556             x86asmexe=$x86asmexe_probe
4557             x86asm_type=yasm
4558             x86asm_debug="-g dwarf2"
4559             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4560             X86ASM_DEPFLAGS=
4561         fi
4562         check_x86asm "movbe ecx, [5]" && enable x86asm
4563     }
4564
4565     if ! disabled_any asm mmx x86asm; then
4566         disable x86asm
4567         for program in $x86asmexe nasm yasm; do
4568             probe_x86asm $program && break
4569         done
4570         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4571         X86ASMFLAGS="-f $objformat"
4572         enabled pic               && append X86ASMFLAGS "-DPIC"
4573         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4574         case "$objformat" in
4575             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4576         esac
4577
4578         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4579         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4580         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4581         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4582         check_x86asm "CPU amdnop"                      || disable cpunop
4583     fi
4584
4585     case "$cpu" in
4586         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4587             disable fast_clz
4588         ;;
4589     esac
4590
4591 fi
4592
4593 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4594
4595 check_ldflags -Wl,--as-needed
4596
4597 if ! disabled network; then
4598     check_func getaddrinfo $network_extralibs
4599     check_func inet_aton $network_extralibs
4600
4601     check_type netdb.h "struct addrinfo"
4602     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4603     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4604     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4605     check_type poll.h "struct pollfd"
4606     check_type netinet/sctp.h "struct sctp_event_subscribe"
4607     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4608     check_type netinet/in.h "struct sockaddr_in6"
4609     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4610     check_type "sys/types.h sys/socket.h" socklen_t
4611
4612     # Prefer arpa/inet.h over winsock2
4613     if check_header arpa/inet.h ; then
4614         check_func closesocket
4615     elif check_header winsock2.h ; then
4616         check_func_headers winsock2.h closesocket -lws2 &&
4617             network_extralibs="-lws2" ||
4618         { check_func_headers winsock2.h closesocket -lws2_32 &&
4619             network_extralibs="-lws2_32"; } || disable winsock2_h network
4620         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4621
4622         check_type ws2tcpip.h socklen_t
4623         check_type ws2tcpip.h "struct addrinfo"
4624         check_type ws2tcpip.h "struct group_source_req"
4625         check_type ws2tcpip.h "struct ip_mreq_source"
4626         check_type ws2tcpip.h "struct ipv6_mreq"
4627         check_type winsock2.h "struct pollfd"
4628         check_struct winsock2.h "struct sockaddr" sa_len
4629         check_type ws2tcpip.h "struct sockaddr_in6"
4630         check_type ws2tcpip.h "struct sockaddr_storage"
4631     else
4632         disable network
4633     fi
4634 fi
4635
4636 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4637 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4638 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4639 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4640
4641 case "$custom_allocator" in
4642     jemalloc)
4643         # jemalloc by default does not use a prefix
4644         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4645     ;;
4646     tcmalloc)
4647         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4648         malloc_prefix=tc_
4649     ;;
4650 esac
4651
4652 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4653 check_func  ${malloc_prefix}memalign            && enable memalign
4654 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4655
4656 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4657     { check_lib clock_gettime time.h clock_gettime ||
4658       check_lib clock_gettime time.h clock_gettime -lrt; }
4659
4660 check_func  fcntl
4661 check_func  fork
4662 check_func  gethrtime
4663 check_func  getopt
4664 check_func  getrusage
4665 check_func  gettimeofday
4666 check_func  gmtime_r
4667 check_func  isatty
4668 check_func  localtime_r
4669 check_func  mach_absolute_time
4670 check_func  mkstemp
4671 check_func  mmap
4672 check_func  mprotect
4673 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4674 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4675 check_func  sched_getaffinity
4676 check_func  setrlimit
4677 check_func  strerror_r
4678 check_func  sysconf
4679 check_func  sysctl
4680 check_func  usleep
4681
4682 check_func_headers io.h setmode
4683 check_func_headers stdlib.h getenv
4684
4685 check_func_headers windows.h GetProcessAffinityMask
4686 check_func_headers windows.h GetProcessTimes
4687 check_func_headers windows.h GetSystemTimeAsFileTime
4688 check_func_headers windows.h LoadLibrary
4689 check_func_headers windows.h MapViewOfFile
4690 check_func_headers windows.h SetConsoleTextAttribute
4691 check_func_headers windows.h Sleep
4692 check_func_headers windows.h VirtualAlloc
4693 check_struct windows.h "CONDITION_VARIABLE" Ptr
4694
4695 check_header d3d11.h
4696 check_header direct.h
4697 check_header dlfcn.h
4698 check_header dxgidebug.h
4699 check_header dxva.h
4700 check_header dxva2api.h
4701 check_header io.h
4702 check_header mach/mach_time.h
4703 check_header malloc.h
4704 check_header poll.h
4705 check_header sys/mman.h
4706 check_header sys/param.h
4707 check_header sys/resource.h
4708 check_header sys/select.h
4709 check_header sys/time.h
4710 check_header sys/un.h
4711 check_header unistd.h
4712 check_header valgrind/valgrind.h
4713 check_header VideoDecodeAcceleration/VDADecoder.h
4714 check_header windows.h
4715
4716 # it seems there are versions of clang in some distros that try to use the
4717 # gcc headers, which explodes for stdatomic
4718 # so we also check that atomics actually work here
4719 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4720
4721 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4722 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4723 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4724 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4725
4726 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4727
4728 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4729 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4730 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4731
4732 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4733 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4734 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4735
4736 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4737 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4738 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4739 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4740 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4741 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4742 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4743 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4744 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4745
4746 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4747
4748 if ! disabled w32threads && ! enabled pthreads; then
4749     check_lib w32threads "windows.h process.h" _beginthreadex
4750 fi
4751
4752 # check for some common methods of building with pthread support
4753 # do this before the optional library checks as some of them require pthreads
4754 if ! disabled pthreads && ! enabled w32threads; then
4755     if check_lib pthreads pthread.h pthread_join -pthread; then
4756         add_cflags -pthread
4757     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4758         add_cflags -pthreads
4759     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4760         :
4761     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4762         :
4763     elif check_func pthread_join; then
4764         enable pthreads
4765     fi
4766 fi
4767
4768 enabled pthreads &&
4769     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4770
4771 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4772 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4773
4774 # On some systems dynamic loading requires no extra linker flags
4775 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4776
4777 check_lib libm math.h sin -lm
4778
4779 atan2f_args=2
4780 ldexpf_args=2
4781 powf_args=2
4782
4783 for func in $MATH_FUNCS; do
4784     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4785 done
4786
4787 # these are off by default, so fail if requested and not available
4788 enabled avisynth          && require_header avisynth/avisynth_c.h
4789 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4790 enabled cuda              && require cuda cuda.h cuInit -lcuda
4791 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4792 enabled frei0r            && require_header frei0r.h
4793 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4794 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4795 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4796 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4797 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4798 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4799 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4800 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4801 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4802                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4803                                done || die "ERROR: libgsm not found"; }
4804 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4805 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4806 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4807 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4808 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4809 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4810 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4811 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4812 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4813 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4814 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4815                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4816 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4817 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4818 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4819 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4820 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4821 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4822 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4823 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4824 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4825 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4826 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4827 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4828                              { enabled libvpx_vp8_decoder &&
4829                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4830                                enabled libvpx_vp8_encoder &&
4831                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4832                                enabled libvpx_vp9_decoder &&
4833                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4834                                enabled libvpx_vp9_encoder &&
4835                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4836                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4837                                    die "libvpx enabled but no supported decoders/encoders found"
4838                              }
4839 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4840 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4841 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4842                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4843                              { check_cpp_condition x264.h "X264_MPEG2" &&
4844                                enable libx262; }
4845 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4846                              require_cpp_condition x265.h "X265_BUILD >= 57"
4847 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4848 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4849 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4850                                { ! enabled cross_compile &&
4851                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4852                                  add_ldflags -L/opt/vc/lib/ &&
4853                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4854                                die "ERROR: mmal not found" &&
4855                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4856 enabled omx               && require_header OMX_Core.h
4857 enabled omx_rpi           && { check_header OMX_Core.h ||
4858                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4859                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4860 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4861                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4862                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4863                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4864                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4865                                die "ERROR: openssl not found"; }
4866
4867 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4868
4869 if enabled nvenc; then
4870     require_header nvEncodeAPI.h
4871     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4872 fi
4873
4874 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4875 enabled avplay &&
4876     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4877
4878 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4879 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4880
4881 check_header linux/fb.h
4882 check_header linux/videodev2.h
4883 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4884
4885 check_header AVFoundation/AVFoundation.h
4886
4887 check_header sys/videoio.h
4888
4889 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4890 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4891 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4892 # w32api 3.12 had it defined wrong
4893 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4894
4895 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4896 { check_header dev/bktr/ioctl_meteor.h &&
4897   check_header dev/bktr/ioctl_bt848.h; } ||
4898 { check_header machine/ioctl_meteor.h &&
4899   check_header machine/ioctl_bt848.h; } ||
4900 { check_header dev/video/meteor/ioctl_meteor.h &&
4901   check_header dev/video/bktr/ioctl_bt848.h; } ||
4902 check_header dev/ic/bt8xx.h
4903
4904 check_header sys/soundcard.h
4905 check_header soundcard.h
4906
4907 enabled_any alsa_indev alsa_outdev &&
4908     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4909
4910 enabled libjack &&
4911     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4912
4913 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4914
4915 if enabled libcdio; then
4916     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4917     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4918     die "ERROR: No usable libcdio/cdparanoia found"
4919 fi
4920
4921 if enabled libxcb; then
4922     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4923     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4924     disabled libxcb_shm ||
4925         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4926     disabled libxcb_xfixes ||
4927         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4928 fi
4929
4930 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4931 # the desktop api partition
4932 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4933 #ifdef WINAPI_FAMILY
4934 #include <winapifamily.h>
4935 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4936 #error desktop, not uwp
4937 #else
4938 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4939 #endif
4940 #else
4941 #error no family set
4942 #endif
4943 EOF
4944
4945 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4946
4947 enabled vaapi &&
4948     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4949     disable vaapi
4950
4951 enabled vaapi &&
4952     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4953
4954 enabled vaapi &&
4955     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4956
4957 enabled vdpau &&
4958     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4959     disable vdpau
4960
4961 enabled vdpau &&
4962     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4963
4964 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4965
4966 # add some useful compiler flags if supported
4967 check_cflags -Wdeclaration-after-statement
4968 check_cflags -Wall
4969 check_cflags -Wdisabled-optimization
4970 check_cflags -Wpointer-arith
4971 check_cflags -Wredundant-decls
4972 check_cflags -Wwrite-strings
4973 check_cflags -Wtype-limits
4974 check_cflags -Wundef
4975 check_cflags -Wmissing-prototypes
4976 check_cflags -Wstrict-prototypes
4977
4978 if enabled extra_warnings; then
4979     check_cflags -Wcast-qual
4980     check_cflags -Wextra
4981     check_cflags -Wpedantic
4982 fi
4983
4984 check_disable_warning(){
4985     warning_flag=-W${1#-Wno-}
4986     test_cflags $warning_flag && add_cflags $1
4987 }
4988
4989 check_disable_warning -Wno-parentheses
4990 check_disable_warning -Wno-switch
4991 check_disable_warning -Wno-format-zero-length
4992 check_disable_warning -Wno-pointer-sign
4993
4994 check_disable_warning_headers(){
4995     warning_flag=-W${1#-Wno-}
4996     test_cflags $warning_flag && add_cflags_headers $1
4997 }
4998
4999 check_disable_warning_headers -Wno-deprecated-declarations
5000 check_disable_warning_headers -Wno-unused-variable
5001
5002 check_objcflags -fobjc-arc && enable objc_arc
5003
5004 check_cc <<EOF && enable blocks_extension
5005 void (^block)(void);
5006 EOF
5007
5008 # add some linker flags
5009 check_ldflags -Wl,--warn-common
5010 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
5011 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
5012 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
5013
5014 # add some strip flags
5015 # -wN '..@*' is more selective than -x, but not available everywhere.
5016 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
5017
5018 enabled neon_clobber_test &&
5019     check_ldflags -Wl,--wrap,avcodec_open2              \
5020                   -Wl,--wrap,avcodec_decode_audio4      \
5021                   -Wl,--wrap,avcodec_decode_video2      \
5022                   -Wl,--wrap,avcodec_decode_subtitle2   \
5023                   -Wl,--wrap,avcodec_encode_audio2      \
5024                   -Wl,--wrap,avcodec_encode_video2      \
5025                   -Wl,--wrap,avcodec_encode_subtitle    \
5026                   -Wl,--wrap,avcodec_send_packet        \
5027                   -Wl,--wrap,avcodec_receive_packet     \
5028                   -Wl,--wrap,avcodec_send_frame         \
5029                   -Wl,--wrap,avcodec_receive_frame      \
5030                   -Wl,--wrap,avresample_convert ||
5031     disable neon_clobber_test
5032
5033 enabled xmm_clobber_test &&
5034     check_ldflags -Wl,--wrap,avcodec_open2              \
5035                   -Wl,--wrap,avcodec_decode_audio4      \
5036                   -Wl,--wrap,avcodec_decode_video2      \
5037                   -Wl,--wrap,avcodec_decode_subtitle2   \
5038                   -Wl,--wrap,avcodec_encode_audio2      \
5039                   -Wl,--wrap,avcodec_encode_video2      \
5040                   -Wl,--wrap,avcodec_encode_subtitle    \
5041                   -Wl,--wrap,avcodec_send_packet        \
5042                   -Wl,--wrap,avcodec_receive_packet     \
5043                   -Wl,--wrap,avcodec_send_frame         \
5044                   -Wl,--wrap,avcodec_receive_frame      \
5045                   -Wl,--wrap,avresample_convert         \
5046                   -Wl,--wrap,sws_scale ||
5047     disable xmm_clobber_test
5048
5049 check_ld <<EOF && enable proper_dce
5050 extern const int array[512];
5051 static inline int func(void) { return array[0]; }
5052 int main(void) { return 0; }
5053 EOF
5054
5055 if enabled proper_dce; then
5056     echo "X { local: *; };" > $TMPV
5057     if test_ldflags -Wl,${version_script},$TMPV; then
5058         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
5059         check_cc <<EOF && enable symver_asm_label
5060 void ff_foo(void) __asm__ ("av_foo@VERSION");
5061 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5062 EOF
5063         check_cc <<EOF && enable symver_gnu_asm
5064 __asm__(".symver ff_foo,av_foo@VERSION");
5065 void ff_foo(void) {}
5066 EOF
5067     fi
5068 fi
5069
5070 if [ -z "$optflags" ]; then
5071     if enabled small; then
5072         optflags=$cflags_size
5073     elif enabled optimizations; then
5074         optflags=$cflags_speed
5075     else
5076         optflags=$cflags_noopt
5077     fi
5078 fi
5079
5080 check_optflags(){
5081     check_cflags "$@"
5082     enabled lto && check_ldflags "$@"
5083 }
5084
5085 check_optflags $optflags
5086 check_optflags -fno-math-errno
5087 check_optflags -fno-signed-zeros
5088
5089 if enabled lto; then
5090     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5091     check_cflags  -flto
5092     check_ldflags -flto $cpuflags
5093 fi
5094
5095 if enabled icc; then
5096     # Just warnings, no remarks
5097     check_cflags -w1
5098     # -wd: Disable following warnings
5099     # 144, 167, 556: -Wno-pointer-sign
5100     # 1292: attribute "foo" ignored
5101     # 1419: external declaration in primary source file
5102     # 10006: ignoring unknown option -fno-signed-zeros
5103     # 10148: ignoring unknown option -Wno-parentheses
5104     # 10156: ignoring option '-W'; no argument required
5105     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
5106     # 11030: Warning unknown option --as-needed
5107     # 10156: ignoring option '-export'; no argument required
5108     check_ldflags -wd10156,11030
5109     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5110     enable ebp_available
5111     if enabled x86_32; then
5112         icc_version=$($cc -dumpversion)
5113         test ${icc_version%%.*} -ge 11 &&
5114             check_cflags -falign-stack=maintain-16-byte ||
5115             disable aligned_stack
5116     fi
5117 elif enabled ccc; then
5118     # disable some annoying warnings
5119     add_cflags -msg_disable bitnotint
5120     add_cflags -msg_disable mixfuncvoid
5121     add_cflags -msg_disable nonstandcast
5122     add_cflags -msg_disable unsupieee
5123 elif enabled gcc; then
5124     check_optflags -fno-tree-vectorize
5125     check_cflags -Werror=implicit-function-declaration
5126     check_cflags -Werror=missing-prototypes
5127     check_cflags -Werror=return-type
5128     check_cflags -Werror=declaration-after-statement
5129     check_cflags -Werror=vla
5130     check_cflags -Werror=format-security
5131     check_cflags -fdiagnostics-color=auto
5132     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5133 elif enabled llvm_gcc; then
5134     check_cflags -mllvm -stack-alignment=16
5135 elif enabled clang; then
5136     check_cflags -mllvm -stack-alignment=16
5137     check_cflags -Qunused-arguments
5138     check_cflags -Werror=implicit-function-declaration
5139     check_cflags -Werror=missing-prototypes
5140     check_cflags -Werror=return-type
5141 elif enabled cparser; then
5142     add_cflags -Wno-missing-variable-declarations
5143     add_cflags -Wno-empty-statement
5144 elif enabled armcc; then
5145     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5146     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5147     # 2523: use of inline assembly is deprecated
5148     add_cflags -W${armcc_opt},--diag_suppress=2523
5149     add_cflags -W${armcc_opt},--diag_suppress=1207
5150     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5151     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5152     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5153     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5154 elif enabled tms470; then
5155     add_cflags -pds=824 -pds=837
5156     disable inline_asm
5157 elif enabled pathscale; then
5158     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5159     disable inline_asm
5160 elif enabled_any msvc icl; then
5161     enabled x86_32 && disable aligned_stack
5162     enabled_all x86_32 debug && add_cflags -Oy-
5163     enabled debug && add_ldflags -debug
5164     enable pragma_deprecated
5165     if enabled icl; then
5166         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5167         # (correctly) on icl 13.x.
5168         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5169             add_cflags -Qansi-alias
5170         # icl will pass the inline asm tests but inline asm is currently
5171         # not supported (build will fail)
5172         disable inline_asm
5173     fi
5174     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5175     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5176     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5177     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5178     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5179     # MSVC 2013 and newer can handle it fine.
5180     # If this declspec fails, force including stdlib.h before the restrict redefinition
5181     # happens in config.h.
5182     if [ $_restrict != restrict ]; then
5183         check_cc <<EOF || add_cflags -FIstdlib.h
5184 __declspec($_restrict) void* foo(int);
5185 EOF
5186     fi
5187 fi
5188
5189 for pfx in "" host_; do
5190     varname=${pfx%_}cc_type
5191     eval "type=\$$varname"
5192     if [ "$type" = "msvc" ]; then
5193         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5194 static inline int foo(int a) { return a; }
5195 EOF
5196     fi
5197 done
5198
5199 case $as_type in
5200     clang)
5201         add_asflags -Qunused-arguments
5202     ;;
5203 esac
5204
5205 case $ld_type in
5206     clang)
5207         check_ldflags -Qunused-arguments
5208     ;;
5209 esac
5210
5211 case $target_os in
5212     osf1)
5213         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5214     ;;
5215 esac
5216
5217 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5218
5219 check_deps $CONFIG_LIST       \
5220            $CONFIG_EXTRA      \
5221            $HAVE_LIST         \
5222            $ALL_COMPONENTS    \
5223
5224 flatten_extralibs(){
5225     unset nested_entries
5226     list_name=$1
5227     eval list=\$${1}
5228     for entry in $list; do
5229         entry_copy=$entry
5230         resolve entry_copy
5231         append nested_entries $(filter '*_extralibs' $entry_copy)
5232         flat_entries=$(filter_out '*_extralibs' $entry_copy)
5233         eval $entry="\$flat_entries"
5234     done
5235     append $list_name "$nested_entries"
5236
5237     resolve nested_entries
5238     if test -n "$(filter '*_extralibs' $nested_entries)"; then
5239         flatten_extralibs $list_name
5240     fi
5241 }
5242
5243 for linkunit in $LIBRARY_LIST; do
5244     unset current_extralibs
5245     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
5246     for comp in ${components}; do
5247         enabled $comp || continue
5248         comp_extralibs="${comp}_extralibs"
5249         append current_extralibs $comp_extralibs
5250     done
5251     eval prepend ${linkunit}_extralibs $current_extralibs
5252 done
5253
5254 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5255     flatten_extralibs ${linkunit}_extralibs
5256     unique  ${linkunit}_extralibs
5257     resolve ${linkunit}_extralibs
5258     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
5259 done
5260
5261 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5262
5263 for thread in $THREADS_LIST; do
5264     if enabled $thread; then
5265         test -n "$thread_type" &&
5266             die "ERROR: Only one thread type must be selected." ||
5267             thread_type="$thread"
5268     fi
5269 done
5270
5271 if disabled stdatomic_h; then
5272     if enabled atomics_gcc; then
5273         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
5274     elif enabled atomics_win32; then
5275         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
5276     elif enabled atomics_suncc; then
5277         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
5278     elif enabled pthreads; then
5279         add_compat atomics/pthread/stdatomic.o
5280         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
5281     else
5282         enabled threads && die "Threading is enabled, but no atomics are available"
5283         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
5284     fi
5285 fi
5286
5287 enabled zlib && add_cppflags -DZLIB_CONST
5288
5289 # conditional library dependencies, in linking order
5290 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5291 enabled_any asyncts_filter resample_filter &&
5292                            prepend avfilter_deps "avresample"
5293 enabled scale_filter    && prepend avfilter_deps "swscale"
5294
5295 enabled opus_decoder    && prepend avcodec_deps "avresample"
5296
5297 expand_deps(){
5298     lib_deps=${1}_deps
5299     eval "deps=\$$lib_deps"
5300     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5301     unique $lib_deps
5302 }
5303
5304 map 'expand_deps $v' $LIBRARY_LIST
5305
5306 if test "$quiet" != "yes"; then
5307
5308 echo "install prefix            $prefix"
5309 echo "source path               $source_path"
5310 echo "C compiler                $cc"
5311 echo "C library                 $libc_type"
5312 if test "$host_cc" != "$cc"; then
5313     echo "host C compiler           $host_cc"
5314     echo "host C library            $host_libc_type"
5315 fi
5316 echo "ARCH                      $arch ($cpu)"
5317 if test "$extra_version" != ""; then
5318     echo "version string suffix     $extra_version"
5319 fi
5320 echo "big-endian                ${bigendian-no}"
5321 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5322 if enabled x86; then
5323     echo "standalone assembly       ${x86asm-no}"
5324     echo "x86 assembler             ${x86asmexe}"
5325     echo "MMX enabled               ${mmx-no}"
5326     echo "MMXEXT enabled            ${mmxext-no}"
5327     echo "3DNow! enabled            ${amd3dnow-no}"
5328     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5329     echo "SSE enabled               ${sse-no}"
5330     echo "SSSE3 enabled             ${ssse3-no}"
5331     echo "AVX enabled               ${avx-no}"
5332     echo "XOP enabled               ${xop-no}"
5333     echo "FMA3 enabled              ${fma3-no}"
5334     echo "FMA4 enabled              ${fma4-no}"
5335     echo "i686 features enabled     ${i686-no}"
5336     echo "CMOV is fast              ${fast_cmov-no}"
5337     echo "EBX available             ${ebx_available-no}"
5338     echo "EBP available             ${ebp_available-no}"
5339 fi
5340 if enabled aarch64; then
5341     echo "NEON enabled              ${neon-no}"
5342     echo "VFP enabled               ${vfp-no}"
5343 fi
5344 if enabled arm; then
5345     echo "ARMv5TE enabled           ${armv5te-no}"
5346     echo "ARMv6 enabled             ${armv6-no}"
5347     echo "ARMv6T2 enabled           ${armv6t2-no}"
5348     echo "VFP enabled               ${vfp-no}"
5349     echo "NEON enabled              ${neon-no}"
5350 fi
5351 if enabled ppc; then
5352     echo "AltiVec enabled           ${altivec-no}"
5353     echo "VSX enabled               ${vsx-no}"
5354     echo "POWER8 enabled            ${power8-no}"
5355     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5356     echo "dcbzl available           ${dcbzl-no}"
5357 fi
5358 echo "debug symbols             ${debug-no}"
5359 echo "optimize for size         ${small-no}"
5360 echo "optimizations             ${optimizations-no}"
5361 echo "static                    ${static-no}"
5362 echo "shared                    ${shared-no}"
5363 echo "network support           ${network-no}"
5364 echo "threading support         ${thread_type-no}"
5365 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5366 test -n "$random_seed" &&
5367     echo "random seed               ${random_seed}"
5368 echo
5369
5370 echo "External libraries:"
5371 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5372 echo
5373 echo "External libraries providing hardware acceleration:"
5374 print_enabled '' $HWACCEL_LIBRARY_LIST | print_3_columns
5375 echo
5376
5377 echo "Libraries:"
5378 print_enabled '' $LIBRARY_LIST | print_3_columns
5379 echo
5380
5381 echo "Programs:"
5382 print_enabled '' $PROGRAM_LIST | print_3_columns
5383 echo
5384
5385 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5386     echo "Enabled ${type}s:"
5387     eval list=\$$(toupper $type)_LIST
5388     print_enabled '_*' $list | print_3_columns
5389     echo
5390 done
5391
5392 if test -n "$ignore_tests"; then
5393     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
5394     echo "Ignored FATE tests:"
5395     echo $ignore_tests | print_3_columns
5396     echo
5397 fi
5398
5399 license="LGPL version 2.1 or later"
5400 if enabled nonfree; then
5401     license="nonfree and unredistributable"
5402 elif enabled gplv3; then
5403     license="GPL version 3 or later"
5404 elif enabled lgplv3; then
5405     license="LGPL version 3 or later"
5406 elif enabled gpl; then
5407     license="GPL version 2 or later"
5408 fi
5409
5410 echo "License: $license"
5411
5412 echo "Creating configuration files ..."
5413
5414 fi # test "$quiet" != "yes"
5415
5416 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5417
5418 config_files="$TMPH avbuild/config.mak"
5419
5420 cat > avbuild/config.mak <<EOF
5421 # Automatically generated by configure - do not modify!
5422 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
5423 prefix=$prefix
5424 LIBDIR=\$(DESTDIR)$libdir
5425 SHLIBDIR=\$(DESTDIR)$shlibdir
5426 INCDIR=\$(DESTDIR)$incdir
5427 BINDIR=\$(DESTDIR)$bindir
5428 DATADIR=\$(DESTDIR)$datadir
5429 DOCDIR=\$(DESTDIR)$docdir
5430 MANDIR=\$(DESTDIR)$mandir
5431 SRC_PATH=$source_path
5432 CC_IDENT=$cc_ident
5433 ARCH=$arch
5434 INTRINSICS=$intrinsics
5435 CC=$cc
5436 AS=$as
5437 OBJCC=$objcc
5438 LD=$ld
5439 DEPCC=$dep_cc
5440 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5441 DEPAS=$as
5442 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5443 X86ASM=$x86asmexe
5444 DEPX86ASM=$x86asmexe
5445 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
5446 AR=$ar
5447 ARFLAGS=$arflags
5448 AR_O=$ar_o
5449 AR_CMD=$ar
5450 NM_CMD=$nm
5451 RANLIB=$ranlib
5452 STRIP=$strip
5453 LN_S=$ln_s
5454 CPPFLAGS=$CPPFLAGS
5455 CFLAGS=$CFLAGS
5456 OBJCFLAGS=$OBJCFLAGS
5457 ASFLAGS=$ASFLAGS
5458 AS_C=$AS_C
5459 AS_O=$AS_O
5460 OBJCC_C=$OBJCC_C
5461 OBJCC_E=$OBJCC_E
5462 OBJCC_O=$OBJCC_O
5463 CC_C=$CC_C
5464 CC_E=$CC_E
5465 CC_O=$CC_O
5466 X86ASM_O=$X86ASM_O
5467 LD_O=$LD_O
5468 LD_LIB=$LD_LIB
5469 LD_PATH=$LD_PATH
5470 DLLTOOL=$dlltool
5471 LDFLAGS=$LDFLAGS
5472 LDEXEFLAGS=$LDEXEFLAGS
5473 LDSOFLAGS=$LDSOFLAGS
5474 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5475 STRIPFLAGS=$STRIPFLAGS
5476 X86ASMFLAGS=$X86ASMFLAGS
5477 LIBPREF=$LIBPREF
5478 LIBSUF=$LIBSUF
5479 LIBNAME=$LIBNAME
5480 SLIBPREF=$SLIBPREF
5481 SLIBSUF=$SLIBSUF
5482 EXESUF=$EXESUF
5483 EXTRA_VERSION=$extra_version
5484 CCDEP=$CCDEP
5485 CCDEP_FLAGS=$CCDEP_FLAGS
5486 ASDEP=$ASDEP
5487 ASDEP_FLAGS=$ASDEP_FLAGS
5488 X86ASMDEP=$X86ASMDEP
5489 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
5490 CC_DEPFLAGS=$CC_DEPFLAGS
5491 AS_DEPFLAGS=$AS_DEPFLAGS
5492 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
5493 HOSTCC=$host_cc
5494 HOSTLD=$host_ld
5495 HOSTCFLAGS=$host_cflags
5496 HOSTCPPFLAGS=$host_cppflags
5497 HOSTEXESUF=$HOSTEXESUF
5498 HOSTLDFLAGS=$host_ldflags
5499 HOSTEXTRALIBS=$host_extralibs
5500 DEPHOSTCC=$host_cc
5501 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5502 HOSTCCDEP=$HOSTCCDEP
5503 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5504 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5505 HOSTCC_C=$HOSTCC_C
5506 HOSTCC_O=$HOSTCC_O
5507 HOSTLD_O=$HOSTLD_O
5508 TARGET_EXEC=$target_exec $target_exec_args
5509 TARGET_PATH=$target_path
5510 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5511 CFLAGS-avplay=$sdl_cflags
5512 CFLAGS_HEADERS=$CFLAGS_HEADERS
5513 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5514 EXTRALIBS=$extralibs
5515 COMPAT_OBJS=$compat_objs
5516 INSTALL=install
5517 LIBTARGET=${LIBTARGET}
5518 SLIBNAME=${SLIBNAME}
5519 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5520 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5521 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5522 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5523 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5524 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5525 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5526 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5527 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
5528 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
5529 IGNORE_TESTS=$ignore_tests
5530 EOF
5531
5532 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> avbuild/config.mak' $LIBRARY_LIST
5533
5534 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5535     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> avbuild/config.mak
5536 done
5537
5538 cat > $TMPH <<EOF
5539 /* Automatically generated by configure - do not modify! */
5540 #ifndef LIBAV_CONFIG_H
5541 #define LIBAV_CONFIG_H
5542 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
5543 #define LIBAV_LICENSE "$(c_escape $license)"
5544 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5545 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5546 #define restrict $_restrict
5547 #define EXTERN_PREFIX "${extern_prefix}"
5548 #define EXTERN_ASM ${extern_prefix}
5549 #define SLIBSUF "$SLIBSUF"
5550 EOF
5551
5552 test -n "$malloc_prefix" &&
5553     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5554
5555 if enabled x86asm; then
5556     append config_files $TMPASM
5557     printf '' >$TMPASM
5558 fi
5559
5560 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5561
5562 print_config ARCH_   "$config_files" $ARCH_LIST
5563 print_config HAVE_   "$config_files" $HAVE_LIST
5564 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5565                                      $CONFIG_EXTRA      \
5566                                      $ALL_COMPONENTS    \
5567
5568 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
5569
5570 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5571 cp_if_changed $TMPH config.h
5572 touch avbuild/.config
5573
5574 enabled x86asm && cp_if_changed $TMPASM config.asm
5575
5576 cat > $TMPH <<EOF
5577 /* Generated by ffconf */
5578 #ifndef AVUTIL_AVCONFIG_H
5579 #define AVUTIL_AVCONFIG_H
5580 EOF
5581
5582 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5583
5584 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5585
5586 cp_if_changed $TMPH libavutil/avconfig.h
5587
5588 # generate the lists of enabled components
5589 print_enabled_components(){
5590     file=$1
5591     struct_name=$2
5592     name=$3
5593     shift 3
5594     echo "static const $struct_name * const $name[] = {" > $TMPH
5595     for c in $*; do
5596         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
5597     done
5598     echo "    NULL };" >> $TMPH
5599     cp_if_changed $TMPH $file
5600 }
5601
5602 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
5603 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
5604
5605 test -n "$WARNINGS" && printf "\n$WARNINGS"
5606
5607 # Settings for pkg-config files
5608
5609 cat > avbuild/config.sh <<EOF
5610 # Automatically generated by configure - do not modify!
5611 shared=$shared
5612 prefix=$prefix
5613 libdir=$libdir
5614 incdir=$incdir
5615 source_path=${source_path}
5616 LIBPREF=${LIBPREF}
5617 LIBSUF=${LIBSUF}
5618 extralibs_avutil="$avutil_extralibs"
5619 extralibs_avcodec="$avcodec_extralibs"
5620 extralibs_avformat="$avformat_extralibs"
5621 extralibs_avdevice="$avdevice_extralibs"
5622 extralibs_avfilter="$avfilter_extralibs"
5623 extralibs_avresample="$avresample_extralibs"
5624 extralibs_swscale="$swscale_extralibs"
5625 EOF
5626
5627 for lib in $LIBRARY_LIST; do
5628     lib_deps="$(eval echo \$${lib}_deps)"
5629     echo ${lib}_deps=\"$lib_deps\" >> avbuild/config.sh
5630 done