configure

   1 #!/bin/sh
   2 #
   3 # Libav configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken Libav."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --prefix=PREFIX          install in PREFIX [$prefix_default]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
  91
  92 Licensing options:
  93   --enable-gpl             allow use of GPL code, the resulting libs
  94                            and binaries will be under GPL [no]
  95   --enable-version3        upgrade (L)GPL to version 3 [no]
  96   --enable-nonfree         allow use of nonfree code, the resulting libs
  97                            and binaries will be unredistributable [no]
  98
  99 Configuration options:
 100   --disable-static         do not build static libraries [no]
 101   --enable-shared          build shared libraries [no]
 102   --enable-small           optimize for size instead of speed
 103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
 104   --enable-gray            enable full grayscale support (slower color)
 105   --disable-swscale-alpha  disable alpha channel support in swscale
 106   --disable-all            disable building components, libraries and programs
 107
 108 Program options:
 109   --disable-programs       do not build command line programs
 110   --disable-avconv         disable avconv build
 111   --disable-avplay         disable avplay build
 112   --disable-avprobe        disable avprobe build
 113   --disable-avserver       deprecated, does nothing
 114
 115 Component options:
 116   --disable-doc            do not build documentation
 117   --disable-pod2man        do not build manual pages
 118   --disable-texi2html      do not build HTML documentation
 119   --disable-avdevice       disable libavdevice build
 120   --disable-avcodec        disable libavcodec build
 121   --disable-avformat       disable libavformat build
 122   --disable-avutil         disable libavutil build
 123   --disable-swscale        disable libswscale build
 124   --disable-avfilter       disable video filter support [no]
 125   --disable-avresample     disable libavresample build [no]
 126   --disable-pthreads       disable pthreads [auto]
 127   --disable-w32threads     disable Win32 threads [auto]
 128   --disable-network        disable network support [no]
 129   --disable-dct            disable DCT code
 130   --disable-error-resilience disable error resilience code
 131   --disable-lsp            disable LSP code
 132   --disable-lzo            disable LZO decoder code
 133   --disable-mdct           disable MDCT code
 134   --disable-rdft           disable RDFT code
 135   --disable-fft            disable FFT code
 136   --disable-faan           disable floating point AAN (I)DCT code
 137
 138 Individual component options:
 139   --disable-everything     disable all components listed below
 140   --disable-encoder=NAME   disable encoder NAME
 141   --enable-encoder=NAME    enable encoder NAME
 142   --disable-encoders       disable all encoders
 143   --disable-decoder=NAME   disable decoder NAME
 144   --enable-decoder=NAME    enable decoder NAME
 145   --disable-decoders       disable all decoders
 146   --disable-hwaccel=NAME   disable hwaccel NAME
 147   --enable-hwaccel=NAME    enable hwaccel NAME
 148   --disable-hwaccels       disable all hwaccels
 149   --disable-muxer=NAME     disable muxer NAME
 150   --enable-muxer=NAME      enable muxer NAME
 151   --disable-muxers         disable all muxers
 152   --disable-demuxer=NAME   disable demuxer NAME
 153   --enable-demuxer=NAME    enable demuxer NAME
 154   --disable-demuxers       disable all demuxers
 155   --enable-parser=NAME     enable parser NAME
 156   --disable-parser=NAME    disable parser NAME
 157   --disable-parsers        disable all parsers
 158   --enable-bsf=NAME        enable bitstream filter NAME
 159   --disable-bsf=NAME       disable bitstream filter NAME
 160   --disable-bsfs           disable all bitstream filters
 161   --enable-protocol=NAME   enable protocol NAME
 162   --disable-protocol=NAME  disable protocol NAME
 163   --disable-protocols      disable all protocols
 164   --enable-indev=NAME      enable input device NAME
 165   --disable-indev=NAME     disable input device NAME
 166   --disable-indevs         disable input devices
 167   --enable-outdev=NAME     enable output device NAME
 168   --disable-outdev=NAME    disable output device NAME
 169   --disable-outdevs        disable output devices
 170   --disable-devices        disable all devices
 171   --enable-filter=NAME     enable filter NAME
 172   --disable-filter=NAME    disable filter NAME
 173   --disable-filters        disable all filters
 174
 175 External library support:
 176
 177   Using any of the following switches will allow Libav to link to the
 178   corresponding external library. All the components depending on that library
 179   will become enabled, if all their other dependencies are met and they are not
 180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 181   libwavpack and allow the libwavpack encoder to be built, unless it is
 182   specifically disabled with --disable-encoder=libwavpack.
 183
 184   Note that only the system libraries are auto-detected. All the other external
 185   libraries must be explicitly enabled.
 186
 187   Also note that the following help text describes the purpose of the libraries
 188   themselves, not all their features will necessarily be usable by Libav.
 189
 190   --enable-avisynth          video frameserver
 191   --enable-avxsynth          Linux version of AviSynth
 192   --enable-bzlib             bzip2 compression [autodetect]
 193   --enable-frei0r            video filtering plugins
 194   --enable-gnutls            crypto
 195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
 196   --enable-libcdio           audio CD input
 197   --enable-libdc1394         IEEE 1394/Firewire camera input
 198   --enable-libdcadec         DCA audio decoding
 199   --enable-libfaac           AAC audio encoding
 200   --enable-libfdk-aac        AAC audio encoding/decoding
 201   --enable-libfontconfig     font configuration and management
 202   --enable-libfreetype       font rendering
 203   --enable-libgsm            GSM audio encoding/decoding
 204   --enable-libhdcd           HDCD decoding filter
 205   --enable-libilbc           ILBC audio encoding/decoding
 206   --enable-libjack           JACK audio sound server
 207   --enable-libkvazaar        HEVC video encoding
 208   --enable-libmp3lame        MP3 audio encoding
 209   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
 210   --enable-libopencore-amrwb AMR-WB audio decoding
 211   --enable-libopencv         computer vision
 212   --enable-libopenh264       H.264 video encoding/decoding
 213   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
 214   --enable-libopus           Opus audio encoding/decoding
 215   --enable-libpulse          Pulseaudio sound server
 216   --enable-librtmp           RTMP streaming
 217   --enable-libschroedinger   Dirac video encoding/decoding
 218   --enable-libsnappy         snappy compression
 219   --enable-libspeex          Speex audio encoding/decoding
 220   --enable-libtheora         Theora video encoding/decoding
 221   --enable-libtwolame        MP2 audio encoding
 222   --enable-libvo-aacenc      AAC audio encoding
 223   --enable-libvo-amrwbenc    AMR-WB audio encoding
 224   --enable-libvorbis         Vorbis audio encoding/decoding
 225   --enable-libvpx            VP* video encoding/decoding
 226   --enable-libwavpack        Wavpack audio encoding/decoding
 227   --enable-libwebp           WebP image encoding/decoding
 228   --enable-libx264           H.264 video encoding
 229   --enable-libx265           HEVC video encoding
 230   --enable-libxavs           Chinese AVS video encoding
 231   --enable-libxcb            X window system protocol communication
 232   --enable-libxcb-shm        X11 shm communication [auto]
 233   --enable-libxcb-xfixes     X11 mouse rendering [auto]
 234   --enable-libxvid           MPEG-4 ASP video encoding
 235   --enable-openssl           crypto
 236   --enable-zlib              compression [autodetect]
 237
 238   The following libraries provide various hardware acceleration features:
 239   --enable-cuda    Nvidia CUDA (dynamically linked)
 240   --enable-cuvid   Nvidia CUVID video decode acceleration
 241   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
 242   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
 243   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
 244   --enable-libnpp  Nvidia CUDA processing
 245   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
 246   --enable-nvenc   Nvidia video encoding
 247   --enable-omx     OpenMAX IL
 248   --enable-omx-rpi OpenMAX IL for Raspberry Pi
 249   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
 250   --enable-vda     Apple Video Decode Acceleration [auto]
 251   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
 252
 253 Toolchain options:
 254   --arch=ARCH              select architecture [$arch]
 255   --cpu=CPU                select the minimum required CPU (affects
 256                            instruction selection, may crash on older CPUs)
 257   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 258   --enable-cross-compile   assume a cross-compiler is used
 259   --sysroot=PATH           root of cross-build tree
 260   --sysinclude=PATH        location of cross-build system headers
 261   --target-os=OS           compiler targets OS [$target_os]
 262   --target-exec=CMD        command to run executables on target
 263   --target-path=DIR        path to view of build directory on target
 264   --target-samples=DIR     path to samples directory on target
 265   --toolchain=NAME         set tool defaults according to NAME
 266   --nm=NM                  use nm tool
 267   --ar=AR                  use archive tool AR [$ar_default]
 268   --as=AS                  use assembler AS [$as_default]
 269   --cc=CC                  use C compiler CC [$cc_default]
 270   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 271   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 272   --ld=LD                  use linker LD
 273   --x86asmexe=X86ASM       use x86 assembler X86ASM
 274   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 275   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 276   --host-cc=HOSTCC         use host C compiler HOSTCC
 277   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 278   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 279   --host-ld=HOSTLD         use host linker HOSTLD
 280   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 281   --host-libs=HLIBS        use libs HLIBS when linking for host
 282   --host-os=OS             compiler host OS [$target_os]
 283   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 284   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 285   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 286   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 287   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 288   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 289   --extra-version=STRING   version string suffix []
 290   --optflags=OPTFLAGS      override optimization-related compiler flags
 291   --enable-pic             build position-independent code
 292   --enable-thumb           compile for Thumb instruction set
 293   --enable-lto             use link-time optimization
 294   --env="ENV=override"     override the environment variables
 295
 296 Advanced options (experts only):
 297   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 298   --custom-allocator=NAME  use a supported custom allocator
 299   --disable-symver         disable symbol versioning
 300   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 301   --disable-safe-bitstream-reader
 302                            disable buffer boundary checking in bitreaders
 303                            (faster, but may crash)
 304   --enable-sram            allow use of on-chip SRAM
 305
 306 Optimization options (experts only):
 307   --disable-asm            disable all assembly optimizations
 308   --disable-altivec        disable AltiVec optimizations
 309   --disable-vsx            disable VSX optimizations
 310   --disable-power8         disable POWER8 optimizations
 311   --disable-amd3dnow       disable 3DNow! optimizations
 312   --disable-amd3dnowext    disable 3DNow! extended optimizations
 313   --disable-mmx            disable MMX optimizations
 314   --disable-mmxext         disable MMXEXT optimizations
 315   --disable-sse            disable SSE optimizations
 316   --disable-sse2           disable SSE2 optimizations
 317   --disable-sse3           disable SSE3 optimizations
 318   --disable-ssse3          disable SSSE3 optimizations
 319   --disable-sse4           disable SSE4 optimizations
 320   --disable-sse42          disable SSE4.2 optimizations
 321   --disable-avx            disable AVX optimizations
 322   --disable-xop            disable XOP optimizations
 323   --disable-fma3           disable FMA3 optimizations
 324   --disable-fma4           disable FMA4 optimizations
 325   --disable-avx2           disable AVX2 optimizations
 326   --disable-armv5te        disable armv5te optimizations
 327   --disable-armv6          disable armv6 optimizations
 328   --disable-armv6t2        disable armv6t2 optimizations
 329   --disable-vfp            disable VFP optimizations
 330   --disable-neon           disable NEON optimizations
 331   --disable-inline-asm     disable use of inline assembly
 332   --disable-x86asm         disable use of standalone x86 assembly
 333
 334 Developer options (useful when working on Libav itself):
 335   --disable-debug          disable debugging symbols
 336   --enable-debug=LEVEL     set the debug level [$debuglevel]
 337   --disable-optimizations  disable compiler optimizations
 338   --enable-extra-warnings  enable more compiler warnings
 339   --samples=PATH           location of test samples for FATE, if not set use
 340                            \$LIBAV_SAMPLES at make invocation time.
 341   --enable-neon-clobber-test check NEON registers for clobbering (should be
 342                            used only for debugging purposes)
 343   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 344                            should be used only for debugging purposes)
 345   --enable-random          randomly enable/disable components
 346   --disable-random
 347   --enable-random=LIST     randomly enable/disable specific components or
 348   --disable-random=LIST    component groups. LIST is a comma-separated list
 349                            of NAME[:PROB] entries where NAME is a component
 350                            (group) and PROB the probability associated with
 351                            NAME (default 0.5).
 352   --random-seed=VALUE      seed value for --enable/disable-random
 353   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 354                            (only applies to --disable-optimizations builds)
 355   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 356                            in the name) of tests whose result is ignored
 357
 358 NOTE: Object files are built at the place where configure is launched.
 359 EOF
 360   exit 0
 361 }
 362
 363 quotes='""'
 364
 365 log(){
 366     echo "$@" >> $logfile
 367 }
 368
 369 log_file(){
 370     log BEGIN $1
 371     i=1
 372     while read line; do
 373         printf '%5s   %s\n' "${i}" "${line}"
 374         i=$(($i+1))
 375     done < $1 >> $logfile
 376     log END $1
 377 }
 378
 379 echolog(){
 380     log "$@"
 381     echo "$@"
 382 }
 383
 384 warn(){
 385     log "WARNING: $*"
 386     WARNINGS="${WARNINGS}WARNING: $*\n"
 387 }
 388
 389 die(){
 390     echolog "$@"
 391     cat <<EOF
 392
 393 If you think configure made a mistake, make sure you are using the latest
 394 version from Git.  If the latest version fails, report the problem to the
 395 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 396 EOF
 397     if disabled logging; then
 398         cat <<EOF
 399 Rerun configure with logging enabled (do not use --disable-logging), and
 400 include the log this produces with your report.
 401 EOF
 402     else
 403         cat <<EOF
 404 Include the log file "$logfile" produced by configure as this will help
 405 solving the problem.
 406 EOF
 407     fi
 408     exit 1
 409 }
 410
 411 # Avoid locale weirdness, besides we really just want to translate ASCII.
 412 toupper(){
 413     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 414 }
 415
 416 tolower(){
 417     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 418 }
 419
 420 c_escape(){
 421     echo "$*" | sed 's/["\\]/\\\0/g'
 422 }
 423
 424 sh_quote(){
 425     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 426     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 427     echo "$v"
 428 }
 429
 430 cleanws(){
 431     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 432 }
 433
 434 filter(){
 435     pat=$1
 436     shift
 437     for v; do
 438         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 439     done
 440 }
 441
 442 filter_out(){
 443     pat=$1
 444     shift
 445     for v; do
 446         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 447     done
 448 }
 449
 450 map(){
 451     m=$1
 452     shift
 453     for v; do eval $m; done
 454 }
 455
 456 add_suffix(){
 457     suffix=$1
 458     shift
 459     for v; do echo ${v}${suffix}; done
 460 }
 461
 462 set_all(){
 463     value=$1
 464     shift
 465     for var in $*; do
 466         eval $var=$value
 467     done
 468 }
 469
 470 set_weak(){
 471     value=$1
 472     shift
 473     for var; do
 474         eval : \${$var:=$value}
 475     done
 476 }
 477
 478 sanitize_var_name(){
 479     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 480 }
 481
 482 set_sanitized(){
 483     var=$1
 484     shift
 485     eval $(sanitize_var_name "$var")='$*'
 486 }
 487
 488 get_sanitized(){
 489     eval echo \$$(sanitize_var_name "$1")
 490 }
 491
 492 pushvar(){
 493     for pvar in $*; do
 494         eval level=\${${pvar}_level:=0}
 495         eval ${pvar}_${level}="\$$pvar"
 496         eval ${pvar}_level=$(($level+1))
 497     done
 498 }
 499
 500 popvar(){
 501     for pvar in $*; do
 502         eval level=\${${pvar}_level:-0}
 503         test $level = 0 && continue
 504         eval level=$(($level-1))
 505         eval $pvar="\${${pvar}_${level}}"
 506         eval ${pvar}_level=$level
 507         eval unset ${pvar}_${level}
 508     done
 509 }
 510
 511 enable(){
 512     set_all yes $*
 513 }
 514
 515 disable(){
 516     set_all no $*
 517 }
 518
 519 enable_weak(){
 520     set_weak yes $*
 521 }
 522
 523 disable_weak(){
 524     set_weak no $*
 525 }
 526
 527 enable_sanitized(){
 528     for var; do
 529         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 530     done
 531 }
 532
 533 disable_sanitized(){
 534     for var; do
 535         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 536     done
 537 }
 538
 539 do_enable_deep(){
 540     for var; do
 541         enabled $var && continue
 542         eval sel="\$${var}_select"
 543         eval sgs="\$${var}_suggest"
 544         pushvar var sgs
 545         enable_deep $sel
 546         popvar sgs
 547         enable_deep_weak $sgs
 548         popvar var
 549     done
 550 }
 551
 552 enable_deep(){
 553     do_enable_deep $*
 554     enable $*
 555 }
 556
 557 enable_deep_weak(){
 558     for var; do
 559         disabled $var && continue
 560         pushvar var
 561         do_enable_deep $var
 562         popvar var
 563         enable_weak $var
 564     done
 565 }
 566
 567 enabled(){
 568     test "${1#!}" = "$1" && op== || op=!=
 569     eval test "x\$${1#!}" $op "xyes"
 570 }
 571
 572 disabled(){
 573     test "${1#!}" = "$1" && op== || op=!=
 574     eval test "x\$${1#!}" $op "xno"
 575 }
 576
 577 enabled_all(){
 578     for opt; do
 579         enabled $opt || return 1
 580     done
 581 }
 582
 583 disabled_all(){
 584     for opt; do
 585         disabled $opt || return 1
 586     done
 587 }
 588
 589 enabled_any(){
 590     for opt; do
 591         enabled $opt && return 0
 592     done
 593 }
 594
 595 disabled_any(){
 596     for opt; do
 597         disabled $opt && return 0
 598     done
 599     return 1
 600 }
 601
 602 set_default(){
 603     for opt; do
 604         eval : \${$opt:=\$${opt}_default}
 605     done
 606 }
 607
 608 is_in(){
 609     value=$1
 610     shift
 611     for var in $*; do
 612         [ $var = $value ] && return 0
 613     done
 614     return 1
 615 }
 616
 617 check_deps(){
 618     for cfg; do
 619         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 620         disabled ${cfg}_checking && continue
 621         enable ${cfg}_checking
 622
 623         eval dep_all="\$${cfg}_deps"
 624         eval dep_any="\$${cfg}_deps_any"
 625         eval dep_con="\$${cfg}_conflict"
 626         eval dep_sel="\$${cfg}_select"
 627         eval dep_sgs="\$${cfg}_suggest"
 628         eval dep_ifa="\$${cfg}_if"
 629         eval dep_ifn="\$${cfg}_if_any"
 630
 631         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 632         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 633         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 634
 635         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 636         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 637         enabled_all  $dep_all || disable $cfg
 638         enabled_any  $dep_any || disable $cfg
 639         disabled_all $dep_con || disable $cfg
 640         disabled_any $dep_sel && disable $cfg
 641
 642         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 643
 644         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 645             # filter out library deps, these do not belong in extralibs
 646             is_in $dep $LIBRARY_LIST && continue
 647             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 648         done
 649
 650         disable ${cfg}_checking
 651     done
 652 }
 653
 654 print_config(){
 655     pfx=$1
 656     files=$2
 657     shift 2
 658     map 'eval echo "$v \${$v:-no}"' "$@" |
 659     awk "BEGIN { split(\"$files\", files) }
 660         {
 661             c = \"$pfx\" toupper(\$1);
 662             v = \$2;
 663             sub(/yes/, 1, v);
 664             sub(/no/,  0, v);
 665             for (f in files) {
 666                 file = files[f];
 667                 if (file ~ /\\.h\$/) {
 668                     printf(\"#define %s %d\\n\", c, v) >>file;
 669                 } else if (file ~ /\\.asm\$/) {
 670                     printf(\"%%define %s %d\\n\", c, v) >>file;
 671                 } else if (file ~ /\\.mak\$/) {
 672                     n = -v ? \"\" : \"!\";
 673                     printf(\"%s%s=yes\\n\", n, c) >>file;
 674                 }
 675             }
 676         }"
 677 }
 678
 679 print_enabled(){
 680     suf=$1
 681     shift
 682     for v; do
 683         enabled $v && printf "%s\n" ${v%$suf}
 684     done
 685 }
 686
 687 append(){
 688     var=$1
 689     shift
 690     eval "$var=\"\$$var $*\""
 691 }
 692
 693 prepend(){
 694     var=$1
 695     shift
 696     eval "$var=\"$* \$$var\""
 697 }
 698
 699 unique(){
 700     var=$1
 701     uniq_list=""
 702     for tok in $(eval echo \$$var); do
 703         uniq_list="$(filter_out $tok $uniq_list) $tok"
 704     done
 705     eval "$var=\"${uniq_list}\""
 706 }
 707
 708 resolve(){
 709     var=$1
 710     tmpvar=
 711     for entry in $(eval echo \$$var); do
 712         tmpvar="$tmpvar $(eval echo \$${entry})"
 713     done
 714     eval "$var=\"${tmpvar}\""
 715 }
 716
 717 add_cppflags(){
 718     append CPPFLAGS "$@"
 719 }
 720
 721 add_cflags(){
 722     append CFLAGS $($cflags_filter "$@")
 723 }
 724
 725 add_cflags_headers(){
 726     append CFLAGS_HEADERS $($cflags_filter "$@")
 727 }
 728
 729 add_asflags(){
 730     append ASFLAGS $($asflags_filter "$@")
 731 }
 732
 733 add_objcflags(){
 734     append OBJCFLAGS $($objcflags_filter "$@")
 735 }
 736
 737 add_ldflags(){
 738     append LDFLAGS $($ldflags_filter "$@")
 739 }
 740
 741 add_ldexeflags(){
 742     append LDEXEFLAGS $($ldflags_filter "$@")
 743 }
 744
 745 add_ldsoflags(){
 746     append LDSOFLAGS $($ldflags_filter "$@")
 747 }
 748
 749 add_stripflags(){
 750     append STRIPFLAGS "$@"
 751 }
 752
 753 add_extralibs(){
 754     prepend extralibs $($ldflags_filter "$@")
 755 }
 756
 757 add_host_cppflags(){
 758     append host_cppflags "$@"
 759 }
 760
 761 add_host_cflags(){
 762     append host_cflags $($host_cflags_filter "$@")
 763 }
 764
 765 add_host_ldflags(){
 766     append host_ldflags $($host_ldflags_filter "$@")
 767 }
 768
 769 add_compat(){
 770     append compat_objs $1
 771     shift
 772     map 'add_cppflags -D$v' "$@"
 773 }
 774
 775 check_cmd(){
 776     log "$@"
 777     "$@" >> $logfile 2>&1
 778 }
 779
 780 cc_o(){
 781     eval printf '%s\\n' $CC_O
 782 }
 783
 784 cc_e(){
 785     eval printf '%s\\n' $CC_E
 786 }
 787
 788 check_cc(){
 789     log check_cc "$@"
 790     cat > $TMPC
 791     log_file $TMPC
 792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 793 }
 794
 795 check_objcc(){
 796     log check_objcc "$@"
 797     cat > $TMPC
 798     log_file $TMPC
 799     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
 800 }
 801
 802 check_cpp(){
 803     log check_cpp "$@"
 804     cat > $TMPC
 805     log_file $TMPC
 806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 807 }
 808
 809 as_o(){
 810     eval printf '%s\\n' $AS_O
 811 }
 812
 813 check_as(){
 814     log check_as "$@"
 815     cat > $TMPS
 816     log_file $TMPS
 817     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 818 }
 819
 820 check_inline_asm(){
 821     log check_inline_asm "$@"
 822     name="$1"
 823     code="$2"
 824     shift 2
 825     disable $name
 826     check_cc "$@" <<EOF && enable $name
 827 void foo(void){ __asm__ volatile($code); }
 828 EOF
 829 }
 830
 831 check_insn(){
 832     log check_insn "$@"
 833     check_inline_asm ${1}_inline "\"$2\""
 834     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 835 }
 836
 837 check_x86asm(){
 838     log check_x86asm "$@"
 839     echo "$1" > $TMPS
 840     log_file $TMPS
 841     shift 1
 842     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
 843 }
 844
 845 ld_o(){
 846     eval printf '%s\\n' $LD_O
 847 }
 848
 849 check_ld(){
 850     log check_ld "$@"
 851     flags=$(filter_out '-l*' "$@")
 852     libs=$(filter '-l*' "$@")
 853     check_cc $($cflags_filter $flags) || return
 854     flags=$($ldflags_filter $flags)
 855     libs=$($ldflags_filter $libs)
 856     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 857 }
 858
 859 print_include(){
 860     hdr=$1
 861     test "${hdr%.h}" = "${hdr}" &&
 862         echo "#include $hdr"    ||
 863         echo "#include <$hdr>"
 864 }
 865
 866 check_code(){
 867     log check_code "$@"
 868     check=$1
 869     headers=$2
 870     code=$3
 871     shift 3
 872     {
 873         for hdr in $headers; do
 874             print_include $hdr
 875         done
 876         echo "int main(void) { $code; return 0; }"
 877     } | check_$check "$@"
 878 }
 879
 880 check_cppflags(){
 881     log check_cppflags "$@"
 882     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
 883 #include <stdlib.h>;
 884 EOF
 885 }
 886
 887 test_cflags(){
 888     log test_cflags "$@"
 889     set -- $($cflags_filter "$@")
 890     check_cc "$@" <<EOF
 891 int x;
 892 EOF
 893 }
 894
 895 check_cflags(){
 896     log check_cflags "$@"
 897     test_cflags "$@" && add_cflags "$@"
 898 }
 899
 900 test_objcflags(){
 901     log test_objcflags "$@"
 902     set -- $($objcflags_filter "$@")
 903     check_objcc "$@" <<EOF
 904 int x;
 905 EOF
 906 }
 907
 908 check_objcflags(){
 909     log check_objcflags "$@"
 910     test_objcflags "$@" && add_objcflags "$@"
 911 }
 912
 913 test_ldflags(){
 914     log test_ldflags "$@"
 915     check_ld "$@" <<EOF
 916 int main(void){ return 0; }
 917 EOF
 918 }
 919
 920 check_ldflags(){
 921     log check_ldflags "$@"
 922     test_ldflags "$@" && add_ldflags "$@"
 923 }
 924
 925 test_stripflags(){
 926     log test_stripflags "$@"
 927     # call check_cc to get a fresh TMPO
 928     check_cc <<EOF
 929 int main(void) { return 0; }
 930 EOF
 931     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 932 }
 933
 934 check_stripflags(){
 935     log check_stripflags "$@"
 936     test_stripflags "$@" && add_stripflags "$@"
 937 }
 938
 939 check_header(){
 940     log check_header "$@"
 941     header=$1
 942     shift
 943     disable_sanitized $header
 944     check_cpp "$@" <<EOF && enable_sanitized $header
 945 #include <$header>
 946 int x;
 947 EOF
 948 }
 949
 950 check_func(){
 951     log check_func "$@"
 952     func=$1
 953     shift
 954     disable $func
 955     check_ld "$@" <<EOF && enable $func
 956 extern int $func();
 957 int main(void){ $func(); }
 958 EOF
 959 }
 960
 961 check_mathfunc(){
 962     log check_mathfunc "$@"
 963     func=$1
 964     narg=$2
 965     shift 2
 966     test $narg = 2 && args="f, g" || args="f"
 967     disable $func
 968     check_ld "$@" <<EOF && enable $func
 969 #include <math.h>
 970 float foo(float f, float g) { return $func($args); }
 971 int main(void){ return 0; }
 972 EOF
 973 }
 974
 975 check_func_headers(){
 976     log check_func_headers "$@"
 977     headers=$1
 978     funcs=$2
 979     shift 2
 980     {
 981         for hdr in $headers; do
 982             print_include $hdr
 983         done
 984         for func in $funcs; do
 985             echo "long check_$func(void) { return (long) $func; }"
 986         done
 987         echo "int main(void) { return 0; }"
 988     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
 989 }
 990
 991 check_cpp_condition(){
 992     log check_cpp_condition "$@"
 993     header=$1
 994     condition=$2
 995     shift 2
 996     check_cpp "$@" <<EOF
 997 #include <$header>
 998 #if !($condition)
 999 #error "unsatisfied condition: $condition"
1000 #endif
1001 EOF
1002 }
1003
1004 test_cflags_cpp(){
1005     log test_cflags_cpp "$@"
1006     flags=$1
1007     condition=$2
1008     shift 2
1009     set -- $($cflags_filter "$flags")
1010     check_cpp "$@" <<EOF
1011 #if !($condition)
1012 #error "unsatisfied condition: $condition"
1013 #endif
1014 EOF
1015 }
1016
1017 check_lib(){
1018     log check_lib "$@"
1019     name="$1"
1020     headers="$2"
1021     funcs="$3"
1022     shift 3
1023     disable $name
1024     check_func_headers "$headers" "$funcs" "$@" &&
1025         enable $name && eval ${name}_extralibs="\$@"
1026 }
1027
1028 check_pkg_config(){
1029     log check_pkg_config "$@"
1030     name="$1"
1031     pkg_version="$2"
1032     pkg="${2%% *}"
1033     headers="$3"
1034     funcs="$4"
1035     shift 4
1036     disable $name
1037     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1038     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1039     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1040     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1041         enable $name &&
1042         add_cflags    "$pkg_cflags" &&
1043         eval $(sanitize_var_name ${name}_extralibs)="\$pkg_libs"
1044 }
1045
1046 check_exec(){
1047     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1048 }
1049
1050 check_exec_crash(){
1051     log check_exec_crash "$@"
1052     code=$(cat)
1053
1054     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1055     # are safe but may not be available everywhere.  Thus we use
1056     # raise(SIGTERM) instead.  The check is run in a subshell so we
1057     # can redirect the "Terminated" message from the shell.  SIGBUS
1058     # is not defined by standard C so it is used conditionally.
1059
1060     (check_exec "$@") >> $logfile 2>&1 <<EOF
1061 #include <signal.h>
1062 static void sighandler(int sig){
1063     raise(SIGTERM);
1064 }
1065 int foo(void){
1066     $code
1067 }
1068 int (*func_ptr)(void) = foo;
1069 int main(void){
1070     signal(SIGILL, sighandler);
1071     signal(SIGFPE, sighandler);
1072     signal(SIGSEGV, sighandler);
1073 #ifdef SIGBUS
1074     signal(SIGBUS, sighandler);
1075 #endif
1076     return func_ptr();
1077 }
1078 EOF
1079 }
1080
1081 check_type(){
1082     log check_type "$@"
1083     headers=$1
1084     type=$2
1085     shift 2
1086     disable_sanitized "$type"
1087     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1088 }
1089
1090 check_struct(){
1091     log check_struct "$@"
1092     headers=$1
1093     struct=$2
1094     member=$3
1095     shift 3
1096     disable_sanitized "${struct}_${member}"
1097     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1098         enable_sanitized "${struct}_${member}"
1099 }
1100
1101 check_builtin(){
1102     log check_builtin "$@"
1103     name=$1
1104     headers=$2
1105     builtin=$3
1106     shift 3
1107     disable "$name"
1108     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1109 }
1110
1111 check_compile_assert(){
1112     log check_compile_assert "$@"
1113     name=$1
1114     headers=$2
1115     condition=$3
1116     shift 3
1117     disable "$name"
1118     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1119 }
1120
1121 require(){
1122     log require "$@"
1123     name_version="$1"
1124     name="${1%% *}"
1125     headers="$2"
1126     func="$3"
1127     shift 3
1128     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1129 }
1130
1131 require_header(){
1132     log require "$@"
1133     header="$1"
1134     shift
1135     check_header "$header" "$@" || die "ERROR: $header not found"
1136 }
1137
1138 require_cpp_condition(){
1139     log require "$@"
1140     header="$1"
1141     condition="$2"
1142     shift 2
1143     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1144 }
1145
1146 require_pkg_config(){
1147     log require_pkg_config "$@"
1148     pkg_version="$2"
1149     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1150 }
1151
1152 hostcc_e(){
1153     eval printf '%s\\n' $HOSTCC_E
1154 }
1155
1156 hostcc_o(){
1157     eval printf '%s\\n' $HOSTCC_O
1158 }
1159
1160 check_host_cc(){
1161     log check_host_cc "$@"
1162     cat > $TMPC
1163     log_file $TMPC
1164     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1165 }
1166
1167 check_host_cpp(){
1168     log check_host_cpp "$@"
1169     cat > $TMPC
1170     log_file $TMPC
1171     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1172 }
1173
1174 check_host_cppflags(){
1175     log check_host_cppflags "$@"
1176     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1177 #include <stdlib.h>;
1178 EOF
1179 }
1180
1181 check_host_cflags(){
1182     log check_host_cflags "$@"
1183     set -- $($host_cflags_filter "$@")
1184     check_host_cc "$@" <<EOF && append host_cflags "$@"
1185 int x;
1186 EOF
1187 }
1188
1189 check_host_cpp_condition(){
1190     log check_host_cpp_condition "$@"
1191     header=$1
1192     condition=$2
1193     shift 2
1194     check_host_cpp "$@" <<EOF
1195 #include <$header>
1196 #if !($condition)
1197 #error "unsatisfied condition: $condition"
1198 #endif
1199 EOF
1200 }
1201
1202 apply(){
1203     file=$1
1204     shift
1205     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1206 }
1207
1208 cp_if_changed(){
1209     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1210     mkdir -p "$(dirname $2)"
1211     cp -f "$1" "$2"
1212 }
1213
1214 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1215 # system-dependent things.
1216
1217 AVCODEC_COMPONENTS="
1218     bsfs
1219     decoders
1220     encoders
1221     hwaccels
1222     parsers
1223 "
1224
1225 AVDEVICE_COMPONENTS="
1226     indevs
1227     outdevs
1228 "
1229 AVFILTER_COMPONENTS="
1230     filters
1231 "
1232 AVFORMAT_COMPONENTS="
1233     demuxers
1234     muxers
1235     protocols
1236 "
1237
1238 AVRESAMPLE_COMPONENTS=""
1239 AVUTIL_COMPONENTS=""
1240
1241 COMPONENT_LIST="
1242     $AVCODEC_COMPONENTS
1243     $AVDEVICE_COMPONENTS
1244     $AVFILTER_COMPONENTS
1245     $AVFORMAT_COMPONENTS
1246     $AVRESAMPLE_COMPONENTS
1247     $AVUTIL_COMPONENTS
1248 "
1249
1250 EXAMPLE_LIST="
1251     decode_audio_example
1252     decode_video_example
1253     encode_audio_example
1254     encode_video_example
1255     filter_audio_example
1256     metadata_example
1257     output_example
1258     qsvdec_example
1259     transcode_aac_example
1260 "
1261
1262 # catchall list of things that require external libs to link
1263 EXTRALIBS_LIST="
1264     cpu_init
1265     cws2fws
1266 "
1267
1268 HWACCEL_LIBRARY_NONFREE_LIST="
1269     cuda
1270     cuvid
1271     libnpp
1272 "
1273 HWACCEL_LIBRARY_LIST="
1274     $HWACCEL_LIBRARY_NONFREE_LIST
1275     d3d11va
1276     dxva2
1277     libmfx
1278     mmal
1279     nvenc
1280     omx
1281     vaapi
1282     vda
1283     vdpau
1284 "
1285
1286 EXTERNAL_LIBRARY_GPL_LIST="
1287     libcdio
1288     libx264
1289     libx265
1290     libxavs
1291     libxvid
1292 "
1293
1294 EXTERNAL_LIBRARY_NONFREE_LIST="
1295     libfaac
1296     libfdk_aac
1297     openssl
1298 "
1299
1300 EXTERNAL_LIBRARY_VERSION3_LIST="
1301     libopencore_amrnb
1302     libopencore_amrwb
1303     libvo_aacenc
1304     libvo_amrwbenc
1305 "
1306
1307 EXTERNAL_LIBRARY_LIST="
1308     $EXTERNAL_LIBRARY_GPL_LIST
1309     $EXTERNAL_LIBRARY_NONFREE_LIST
1310     $EXTERNAL_LIBRARY_VERSION3_LIST
1311     avisynth
1312     avxsynth
1313     frei0r
1314     gnutls
1315     libbs2b
1316     libdc1394
1317     libdcadec
1318     libfontconfig
1319     libfreetype
1320     libgsm
1321     libhdcd
1322     libilbc
1323     libjack
1324     libkvazaar
1325     libmp3lame
1326     libopencv
1327     libopenh264
1328     libopenjpeg
1329     libopus
1330     libpulse
1331     librtmp
1332     libschroedinger
1333     libsnappy
1334     libspeex
1335     libtheora
1336     libtwolame
1337     libvorbis
1338     libvpx
1339     libwavpack
1340     libwebp
1341     libxcb
1342     libxcb_shm
1343     libxcb_xfixes
1344 "
1345
1346 SYSTEM_LIBRARY_LIST="
1347     bzlib
1348     zlib
1349 "
1350
1351 FEATURE_LIST="
1352     gray
1353     hardcoded_tables
1354     omx_rpi
1355     runtime_cpudetect
1356     safe_bitstream_reader
1357     shared
1358     small
1359     sram
1360     static
1361     swscale_alpha
1362 "
1363
1364 LIBRARY_LIST="
1365     avcodec
1366     avdevice
1367     avfilter
1368     avformat
1369     avresample
1370     avutil
1371     swscale
1372 "
1373
1374 LICENSE_LIST="
1375     gpl
1376     nonfree
1377     version3
1378 "
1379
1380 PROGRAM_LIST="
1381     avconv
1382     avplay
1383     avprobe
1384 "
1385
1386 SUBSYSTEM_LIST="
1387     dct
1388     doc
1389     error_resilience
1390     faan
1391     fft
1392     lsp
1393     lzo
1394     mdct
1395     network
1396     rdft
1397 "
1398
1399 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1400 CONFIG_LIST="
1401     $EXAMPLE_LIST
1402     $EXTERNAL_LIBRARY_LIST
1403     $HWACCEL_LIBRARY_LIST
1404     $FEATURE_LIST
1405     $LICENSE_LIST
1406     $LIBRARY_LIST
1407     $PROGRAM_LIST
1408     $SUBSYSTEM_LIST
1409     $SYSTEM_LIBRARY_LIST
1410     neon_clobber_test
1411     pic
1412     pod2man
1413     texi2html
1414     thumb
1415     valgrind_backtrace
1416     xmm_clobber_test
1417     $COMPONENT_LIST
1418 "
1419
1420 THREADS_LIST="
1421     pthreads
1422     w32threads
1423 "
1424
1425 ATOMICS_LIST="
1426     atomics_gcc
1427     atomics_suncc
1428     atomics_win32
1429 "
1430
1431 ARCH_LIST="
1432     aarch64
1433     alpha
1434     arm
1435     avr32
1436     avr32_ap
1437     avr32_uc
1438     bfin
1439     ia64
1440     m68k
1441     mips
1442     mips64
1443     parisc
1444     ppc
1445     ppc64
1446     s390
1447     sh4
1448     sparc
1449     sparc64
1450     tilegx
1451     tilepro
1452     tomi
1453     x86
1454     x86_32
1455     x86_64
1456 "
1457
1458 ARCH_EXT_LIST_ARM="
1459     armv5te
1460     armv6
1461     armv6t2
1462     armv8
1463     neon
1464     vfp
1465     vfpv3
1466 "
1467
1468 ARCH_EXT_LIST_X86_SIMD="
1469     amd3dnow
1470     amd3dnowext
1471     avx
1472     avx2
1473     fma3
1474     fma4
1475     mmx
1476     mmxext
1477     sse
1478     sse2
1479     sse3
1480     sse4
1481     sse42
1482     ssse3
1483     xop
1484 "
1485
1486 ARCH_EXT_LIST_PPC="
1487     altivec
1488     dcbzl
1489     ldbrx
1490     power8
1491     ppc4xx
1492     vsx
1493 "
1494
1495 ARCH_EXT_LIST_X86="
1496     $ARCH_EXT_LIST_X86_SIMD
1497     cpunop
1498     i686
1499 "
1500
1501 ARCH_EXT_LIST_MIPS="
1502     loongson
1503     mips32r1
1504     mips64r1
1505     mips32r2
1506     mips64r2
1507     mips32r6
1508     mips64r6
1509 "
1510
1511 ARCH_EXT_LIST="
1512     $ARCH_EXT_LIST_ARM
1513     $ARCH_EXT_LIST_MIPS
1514     $ARCH_EXT_LIST_PPC
1515     $ARCH_EXT_LIST_X86
1516     vis
1517 "
1518
1519 ARCH_FEATURES="
1520     aligned_stack
1521     fast_64bit
1522     fast_clz
1523     fast_cmov
1524     local_aligned_8
1525     local_aligned_16
1526     local_aligned_32
1527     simd_align_16
1528     simd_align_32
1529 "
1530
1531 BUILTIN_LIST="
1532     atomic_cas_ptr
1533     machine_rw_barrier
1534     MemoryBarrier
1535     mm_empty
1536     rdtsc
1537     sem_timedwait
1538     sync_val_compare_and_swap
1539 "
1540 HAVE_LIST_CMDLINE="
1541     inline_asm
1542     symver
1543     x86asm
1544 "
1545
1546 HAVE_LIST_PUB="
1547     bigendian
1548     fast_unaligned
1549 "
1550
1551 HEADERS_LIST="
1552     AVFoundation_AVFoundation_h
1553     alsa_asoundlib_h
1554     arpa_inet_h
1555     cdio_paranoia_h
1556     cdio_paranoia_paranoia_h
1557     d3d11_h
1558     dispatch_dispatch_h
1559     dev_bktr_ioctl_bt848_h
1560     dev_bktr_ioctl_meteor_h
1561     dev_ic_bt8xx_h
1562     dev_video_bktr_ioctl_bt848_h
1563     dev_video_meteor_ioctl_meteor_h
1564     direct_h
1565     dlfcn_h
1566     dxgidebug_h
1567     dxva_h
1568     gsm_h
1569     io_h
1570     mach_mach_time_h
1571     machine_ioctl_bt848_h
1572     machine_ioctl_meteor_h
1573     malloc_h
1574     poll_h
1575     sndio_h
1576     soundcard_h
1577     stdatomic_h
1578     sys_mman_h
1579     sys_param_h
1580     sys_resource_h
1581     sys_select_h
1582     sys_soundcard_h
1583     sys_time_h
1584     sys_un_h
1585     sys_videoio_h
1586     unistd_h
1587     valgrind_valgrind_h
1588     windows_h
1589     winsock2_h
1590 "
1591
1592 INTRINSICS_LIST="
1593     intrinsics_neon
1594 "
1595
1596 MATH_FUNCS="
1597     atanf
1598     atan2f
1599     cbrtf
1600     cosf
1601     exp2
1602     exp2f
1603     expf
1604     isinf
1605     isnan
1606     ldexpf
1607     llrint
1608     llrintf
1609     log2
1610     log2f
1611     log10f
1612     lrint
1613     lrintf
1614     powf
1615     rint
1616     round
1617     roundf
1618     sinf
1619     trunc
1620     truncf
1621 "
1622
1623 SYSTEM_FUNCS="
1624     aligned_malloc
1625     clock_gettime
1626     closesocket
1627     CommandLineToArgvW
1628     CoTaskMemFree
1629     CryptGenRandom
1630     fcntl
1631     flt_lim
1632     fork
1633     getaddrinfo
1634     gethrtime
1635     getopt
1636     GetProcessAffinityMask
1637     GetProcessMemoryInfo
1638     GetProcessTimes
1639     getrusage
1640     GetSystemTimeAsFileTime
1641     gettimeofday
1642     gmtime_r
1643     inet_aton
1644     isatty
1645     LoadLibrary
1646     localtime_r
1647     mach_absolute_time
1648     MapViewOfFile
1649     memalign
1650     mkstemp
1651     mmap
1652     mprotect
1653     nanosleep
1654     posix_memalign
1655     sched_getaffinity
1656     SetConsoleTextAttribute
1657     setmode
1658     setrlimit
1659     Sleep
1660     strerror_r
1661     sysconf
1662     sysctl
1663     usleep
1664     VirtualAlloc
1665 "
1666
1667 TOOLCHAIN_FEATURES="
1668     as_arch_directive
1669     as_fpu_directive
1670     as_func
1671     as_object_arch
1672     asm_mod_q
1673     attribute_may_alias
1674     attribute_packed
1675     blocks_extension
1676     ebp_available
1677     ebx_available
1678     gnu_as
1679     ibm_asm
1680     inline_asm_labels
1681     pragma_deprecated
1682     symver_asm_label
1683     symver_gnu_asm
1684     vfp_args
1685     xform_asm
1686     xmm_clobbers
1687 "
1688
1689 TYPES_LIST="
1690     CONDITION_VARIABLE_Ptr
1691     CUVIDDECODECREATEINFO_bitDepthMinus8
1692     socklen_t
1693     struct_addrinfo
1694     struct_group_source_req
1695     struct_ip_mreq_source
1696     struct_ipv6_mreq
1697     struct_pollfd
1698     struct_rusage_ru_maxrss
1699     struct_sockaddr_in6
1700     struct_sockaddr_sa_len
1701     struct_sockaddr_storage
1702     struct_v4l2_frmivalenum_discrete
1703 "
1704
1705 HAVE_LIST="
1706     $ARCH_EXT_LIST
1707     $(add_suffix _external $ARCH_EXT_LIST)
1708     $(add_suffix _inline   $ARCH_EXT_LIST)
1709     $ARCH_FEATURES
1710     $BUILTIN_LIST
1711     $HAVE_LIST_CMDLINE
1712     $HAVE_LIST_PUB
1713     $HEADERS_LIST
1714     $INTRINSICS_LIST
1715     $MATH_FUNCS
1716     $SYSTEM_FUNCS
1717     $THREADS_LIST
1718     $TOOLCHAIN_FEATURES
1719     $TYPES_LIST
1720     dos_paths
1721     libc_msvcrt
1722     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1723     sdl
1724     section_data_rel_ro
1725     threads
1726     uwp
1727     vaapi_drm
1728     vaapi_x11
1729     vdpau_x11
1730 "
1731
1732 # options emitted with CONFIG_ prefix but not available on the command line
1733 CONFIG_EXTRA="
1734     aandcttables
1735     ac3dsp
1736     adts_header
1737     audio_frame_queue
1738     audiodsp
1739     blockdsp
1740     bswapdsp
1741     cabac
1742     cbs
1743     cbs_h264
1744     cbs_h265
1745     dirac_parse
1746     dvprofile
1747     faandct
1748     faanidct
1749     fdctdsp
1750     flacdsp
1751     fmtconvert
1752     g722dsp
1753     gmp
1754     golomb
1755     gplv3
1756     h263dsp
1757     h264chroma
1758     h264dsp
1759     h264parse
1760     h264pred
1761     h264qpel
1762     hevc_ps
1763     hpeldsp
1764     huffman
1765     huffyuvdsp
1766     huffyuvencdsp
1767     idctdsp
1768     iirfilter
1769     imdct15
1770     intrax8
1771     iso_media
1772     ividsp
1773     jpegtables
1774     lgplv3
1775     libx262
1776     libxcb_shape
1777     lpc
1778     lzf
1779     me_cmp
1780     mpeg_er
1781     mpegaudio
1782     mpegaudiodsp
1783     mpegaudioheader
1784     mpegvideo
1785     mpegvideoenc
1786     mss34dsp
1787     pixblockdsp
1788     qpeldsp
1789     qsv
1790     qsvdec
1791     qsvenc
1792     rangecoder
1793     riffdec
1794     riffenc
1795     rtpdec
1796     rtpenc_chain
1797     rv34dsp
1798     sinewin
1799     snappy
1800     srtp
1801     startcode
1802     texturedsp
1803     texturedspenc
1804     tpeldsp
1805     vaapi_encode
1806     vc1dsp
1807     videodsp
1808     vp3dsp
1809     vp56dsp
1810     vp8dsp
1811     wma_freqs
1812     wmv2dsp
1813 "
1814
1815 CMDLINE_SELECT="
1816     $ARCH_EXT_LIST
1817     $CONFIG_LIST
1818     $HAVE_LIST_CMDLINE
1819     $THREADS_LIST
1820     asm
1821     cross_compile
1822     debug
1823     extra_warnings
1824     logging
1825     lto
1826     optimizations
1827     rpath
1828 "
1829
1830 PATHS_LIST="
1831     bindir
1832     datadir
1833     docdir
1834     incdir
1835     libdir
1836     mandir
1837     prefix
1838     shlibdir
1839 "
1840
1841 CMDLINE_SET="
1842     $PATHS_LIST
1843     ar
1844     arch
1845     as
1846     cc
1847     objcc
1848     cpu
1849     cross_prefix
1850     custom_allocator
1851     dep_cc
1852     env
1853     extra_version
1854     host_cc
1855     host_cflags
1856     host_extralibs
1857     host_ld
1858     host_ldflags
1859     host_os
1860     ignore_tests
1861     ld
1862     logfile
1863     malloc_prefix
1864     nm
1865     optflags
1866     pkg_config
1867     pkg_config_flags
1868     random_seed
1869     samples
1870     sysinclude
1871     sysroot
1872     target_exec
1873     target_os
1874     target_path
1875     target_samples
1876     toolchain
1877     x86asmexe
1878 "
1879
1880 CMDLINE_APPEND="
1881     extra_cflags
1882     extra_objcflags
1883     host_cppflags
1884 "
1885
1886 # code dependency declarations
1887
1888 # architecture extensions
1889
1890 armv5te_deps="arm"
1891 armv6_deps="arm"
1892 armv6t2_deps="arm"
1893 armv8_deps="aarch64"
1894 neon_deps_any="aarch64 arm"
1895 intrinsics_neon_deps="neon"
1896 vfp_deps_any="aarch64 arm"
1897 vfpv3_deps="vfp"
1898
1899 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1900
1901 altivec_deps="ppc"
1902 dcbzl_deps="ppc"
1903 ldbrx_deps="ppc"
1904 ppc4xx_deps="ppc"
1905 vsx_deps="altivec"
1906 power8_deps="vsx"
1907
1908 loongson_deps="mips"
1909 mips32r1_deps="mips32"
1910 mips32r2_deps="mips32"
1911 mips32r6_deps="mips32"
1912 mips64r1_deps="mips64"
1913 mips64r2_deps="mips64"
1914 mips64r6_deps="mips64"
1915
1916 vis_deps="sparc"
1917
1918 cpunop_deps="i686"
1919 x86_64_select="i686"
1920 x86_64_suggest="fast_cmov"
1921
1922 amd3dnow_deps="mmx"
1923 amd3dnowext_deps="amd3dnow"
1924 i686_deps="x86"
1925 mmx_deps="x86"
1926 mmxext_deps="mmx"
1927 sse_deps="mmxext"
1928 sse2_deps="sse"
1929 sse3_deps="sse2"
1930 ssse3_deps="sse3"
1931 sse4_deps="ssse3"
1932 sse42_deps="sse4"
1933 avx_deps="sse42"
1934 xop_deps="avx"
1935 fma3_deps="avx"
1936 fma4_deps="avx"
1937 avx2_deps="avx"
1938
1939 mmx_external_deps="x86asm"
1940 mmx_inline_deps="inline_asm x86"
1941 mmx_suggest="mmx_external mmx_inline"
1942
1943 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1944     eval dep=\$${ext}_deps
1945     eval ${ext}_external_deps='"${dep}_external"'
1946     eval ${ext}_inline_deps='"${dep}_inline"'
1947     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1948 done
1949
1950 aligned_stack_if_any="aarch64 ppc x86"
1951 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1952 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1953 fast_unaligned_if_any="aarch64 ppc x86"
1954 simd_align_16_if_any="altivec neon sse"
1955 simd_align_32_if_any="avx"
1956
1957 # system capabilities
1958 symver_if_any="symver_asm_label symver_gnu_asm"
1959 valgrind_backtrace_conflict="optimizations"
1960 valgrind_backtrace_deps="valgrind_valgrind_h"
1961
1962 # threading support
1963 atomics_gcc_if="sync_val_compare_and_swap"
1964 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1965 atomics_win32_if="MemoryBarrier"
1966 atomics_native_if_any="$ATOMICS_LIST"
1967 w32threads_deps="atomics_native"
1968 threads_if_any="$THREADS_LIST"
1969
1970 # subsystems
1971 cbs_h264_select="cbs golomb"
1972 cbs_h265_select="cbs golomb"
1973 dct_select="rdft"
1974 dirac_parse_select="golomb"
1975 error_resilience_select="me_cmp"
1976 faandct_deps="faan"
1977 faandct_select="fdctdsp"
1978 faanidct_deps="faan"
1979 faanidct_select="idctdsp"
1980 h264dsp_select="startcode"
1981 hevc_ps_select="golomb"
1982 intrax8_select="blockdsp idctdsp"
1983 mdct_select="fft"
1984 rdft_select="fft"
1985 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1986 mpeg_er_select="error_resilience"
1987 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1988 mpegaudiodsp_select="dct"
1989 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1990 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1991 vc1dsp_select="h264chroma qpeldsp startcode"
1992
1993 # decoders / encoders
1994 aac_decoder_select="adts_header imdct15 mdct sinewin"
1995 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1996 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1997 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1998 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1999 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2000 adpcm_g722_decoder_select="g722dsp"
2001 adpcm_g722_encoder_select="g722dsp"
2002 aic_decoder_select="golomb idctdsp"
2003 alac_encoder_select="lpc"
2004 als_decoder_select="bswapdsp"
2005 amrnb_decoder_select="lsp"
2006 amrwb_decoder_select="lsp"
2007 amv_decoder_select="sp5x_decoder"
2008 ape_decoder_select="bswapdsp"
2009 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2010 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2011 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2012 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2013 atrac1_decoder_select="mdct sinewin"
2014 atrac3_decoder_select="mdct"
2015 atrac3p_decoder_select="mdct sinewin"
2016 bink_decoder_select="blockdsp hpeldsp"
2017 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2018 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2019 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2020 clearvideo_decoder_select="idctdsp"
2021 cllc_decoder_select="bswapdsp"
2022 comfortnoise_encoder_select="lpc"
2023 cook_decoder_select="audiodsp mdct sinewin"
2024 cscd_decoder_select="lzo"
2025 cscd_decoder_suggest="zlib"
2026 dca_decoder_select="fmtconvert mdct"
2027 dds_decoder_select="texturedsp"
2028 dnxhd_decoder_select="blockdsp idctdsp"
2029 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2030 dvvideo_decoder_select="dvprofile idctdsp"
2031 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2032 dxa_decoder_deps="zlib"
2033 dxv_decoder_select="lzf texturedsp"
2034 eac3_decoder_select="ac3_decoder"
2035 eac3_encoder_select="ac3_encoder"
2036 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2037 eatgq_decoder_select="aandcttables idctdsp"
2038 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2039 exr_decoder_deps="zlib"
2040 ffv1_decoder_select="rangecoder"
2041 ffv1_encoder_select="rangecoder"
2042 ffvhuff_decoder_select="huffyuv_decoder"
2043 ffvhuff_encoder_select="huffyuv_encoder"
2044 fic_decoder_select="golomb"
2045 flac_decoder_select="flacdsp"
2046 flac_encoder_select="bswapdsp flacdsp lpc"
2047 flashsv_decoder_deps="zlib"
2048 flashsv_encoder_deps="zlib"
2049 flashsv2_decoder_deps="zlib"
2050 flv_decoder_select="h263_decoder"
2051 flv_encoder_select="h263_encoder"
2052 fourxm_decoder_select="blockdsp bswapdsp"
2053 fraps_decoder_select="bswapdsp huffman"
2054 g2m_decoder_deps="zlib"
2055 g2m_decoder_select="blockdsp idctdsp jpegtables"
2056 h261_decoder_select="mpeg_er mpegvideo"
2057 h261_encoder_select="aandcttables mpegvideoenc"
2058 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2059 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2060 h263i_decoder_select="h263_decoder"
2061 h263p_encoder_select="h263_encoder"
2062 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2063 h264_decoder_suggest="error_resilience"
2064 hap_decoder_select="snappy texturedsp"
2065 hap_encoder_deps="libsnappy"
2066 hap_encoder_select="texturedspenc"
2067 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2068 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2069 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2070 iac_decoder_select="imc_decoder"
2071 imc_decoder_select="bswapdsp fft mdct sinewin"
2072 indeo3_decoder_select="hpeldsp"
2073 indeo4_decoder_select="ividsp"
2074 indeo5_decoder_select="ividsp"
2075 interplay_video_decoder_select="hpeldsp"
2076 jpegls_decoder_select="mjpeg_decoder"
2077 jv_decoder_select="blockdsp"
2078 lagarith_decoder_select="huffyuvdsp"
2079 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2080 magicyuv_decoder_select="huffyuvdsp"
2081 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2082 metasound_decoder_select="lsp mdct sinewin"
2083 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2084 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2085 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2086 mjpegb_decoder_select="mjpeg_decoder"
2087 mlp_decoder_select="mlp_parser"
2088 motionpixels_decoder_select="bswapdsp"
2089 mp1_decoder_select="mpegaudio"
2090 mp1float_decoder_select="mpegaudio"
2091 mp2_decoder_select="mpegaudio"
2092 mp2float_decoder_select="mpegaudio"
2093 mp3_decoder_select="mpegaudio"
2094 mp3adu_decoder_select="mpegaudio"
2095 mp3adufloat_decoder_select="mpegaudio"
2096 mp3float_decoder_select="mpegaudio"
2097 mp3on4_decoder_select="mpegaudio"
2098 mp3on4float_decoder_select="mpegaudio"
2099 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2100 mpc8_decoder_select="mpegaudiodsp"
2101 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2102 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2103 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2104 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2105 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2106 mpeg4_encoder_select="h263_encoder"
2107 msa1_decoder_select="mss34dsp"
2108 msmpeg4v1_decoder_select="h263_decoder"
2109 msmpeg4v2_decoder_select="h263_decoder"
2110 msmpeg4v2_encoder_select="h263_encoder"
2111 msmpeg4v3_decoder_select="h263_decoder"
2112 msmpeg4v3_encoder_select="h263_encoder"
2113 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2114 mts2_decoder_select="mss34dsp"
2115 mxpeg_decoder_select="mjpeg_decoder"
2116 nellymoser_decoder_select="mdct sinewin"
2117 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2118 nuv_decoder_select="idctdsp lzo"
2119 on2avc_decoder_select="mdct"
2120 opus_decoder_deps="avresample"
2121 opus_decoder_select="imdct15"
2122 png_decoder_deps="zlib"
2123 png_encoder_deps="zlib"
2124 png_encoder_select="huffyuvencdsp"
2125 prores_decoder_select="idctdsp"
2126 prores_encoder_select="fdctdsp"
2127 qcelp_decoder_select="lsp"
2128 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2129 ra_144_encoder_select="audio_frame_queue lpc"
2130 ralf_decoder_select="golomb"
2131 rscc_decoder_deps="zlib"
2132 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2133 rv10_encoder_select="h263_encoder"
2134 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2135 rv20_encoder_select="h263_encoder"
2136 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2137 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2138 screenpresso_decoder_deps="zlib"
2139 sipr_decoder_select="lsp"
2140 sp5x_decoder_select="mjpeg_decoder"
2141 svq1_decoder_select="hpeldsp"
2142 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2143 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2144 svq3_decoder_suggest="zlib"
2145 tak_decoder_select="audiodsp"
2146 tdsc_decoder_deps="zlib"
2147 tdsc_decoder_select="mjpeg_decoder"
2148 theora_decoder_select="vp3_decoder"
2149 thp_decoder_select="mjpeg_decoder"
2150 tiff_decoder_suggest="zlib"
2151 tiff_encoder_suggest="zlib"
2152 truehd_decoder_select="mlp_decoder"
2153 truemotion2_decoder_select="bswapdsp"
2154 truespeech_decoder_select="bswapdsp"
2155 tscc_decoder_deps="zlib"
2156 txd_decoder_select="texturedsp"
2157 twinvq_decoder_select="mdct lsp sinewin"
2158 utvideo_decoder_select="bswapdsp huffyuvdsp"
2159 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2160 vble_decoder_select="huffyuvdsp"
2161 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2162 vc1image_decoder_select="vc1_decoder"
2163 vorbis_decoder_select="mdct"
2164 vorbis_encoder_select="mdct"
2165 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2166 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2167 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2168 vp6a_decoder_select="vp6_decoder"
2169 vp6f_decoder_select="vp6_decoder"
2170 vp7_decoder_select="h264pred videodsp vp8dsp"
2171 vp8_decoder_select="h264pred videodsp vp8dsp"
2172 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2173 webp_decoder_select="vp8_decoder"
2174 wmapro_decoder_select="mdct sinewin wma_freqs"
2175 wmav1_decoder_select="mdct sinewin wma_freqs"
2176 wmav1_encoder_select="mdct sinewin wma_freqs"
2177 wmav2_decoder_select="mdct sinewin wma_freqs"
2178 wmav2_encoder_select="mdct sinewin wma_freqs"
2179 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2180 wmv1_decoder_select="h263_decoder"
2181 wmv1_encoder_select="h263_encoder"
2182 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2183 wmv2_encoder_select="h263_encoder wmv2dsp"
2184 wmv3_decoder_select="vc1_decoder"
2185 wmv3image_decoder_select="wmv3_decoder"
2186 zerocodec_decoder_deps="zlib"
2187 zlib_decoder_deps="zlib"
2188 zlib_encoder_deps="zlib"
2189 zmbv_decoder_deps="zlib"
2190 zmbv_encoder_deps="zlib"
2191
2192 # hardware accelerators
2193 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2194 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2195 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2196 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2197
2198 h263_vaapi_hwaccel_deps="vaapi"
2199 h263_vaapi_hwaccel_select="h263_decoder"
2200 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2201 h264_cuvid_hwaccel_select="h264_decoder"
2202 h264_d3d11va_hwaccel_deps="d3d11va"
2203 h264_d3d11va_hwaccel_select="h264_decoder"
2204 h264_d3d11va2_hwaccel_deps="d3d11va"
2205 h264_d3d11va2_hwaccel_select="h264_decoder"
2206 h264_dxva2_hwaccel_deps="dxva2"
2207 h264_dxva2_hwaccel_select="h264_decoder"
2208 h264_mmal_hwaccel_deps="mmal"
2209 h264_qsv_hwaccel_deps="libmfx"
2210 h264_vaapi_hwaccel_deps="vaapi"
2211 h264_vaapi_hwaccel_select="h264_decoder"
2212 h264_vda_hwaccel_deps="vda"
2213 h264_vda_hwaccel_select="h264_decoder"
2214 h264_vda_old_hwaccel_deps="vda"
2215 h264_vda_old_hwaccel_select="h264_decoder"
2216 h264_vdpau_hwaccel_deps="vdpau"
2217 h264_vdpau_hwaccel_select="h264_decoder"
2218 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2219 hevc_cuvid_hwaccel_select="hevc_decoder"
2220 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2221 hevc_d3d11va_hwaccel_select="hevc_decoder"
2222 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2223 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2224 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2225 hevc_dxva2_hwaccel_select="hevc_decoder"
2226 hevc_qsv_hwaccel_deps="libmfx"
2227 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2228 hevc_vaapi_hwaccel_select="hevc_decoder"
2229 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2230 hevc_vdpau_hwaccel_select="hevc_decoder"
2231 mpeg1_vdpau_hwaccel_deps="vdpau"
2232 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2233 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2234 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2235 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2236 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2237 mpeg2_dxva2_hwaccel_deps="dxva2"
2238 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2239 mpeg2_mmal_hwaccel_deps="mmal"
2240 mpeg2_qsv_hwaccel_deps="libmfx"
2241 mpeg2_vaapi_hwaccel_deps="vaapi"
2242 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2243 mpeg2_vdpau_hwaccel_deps="vdpau"
2244 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2245 mpeg4_vaapi_hwaccel_deps="vaapi"
2246 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2247 mpeg4_vdpau_hwaccel_deps="vdpau"
2248 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2249 vc1_d3d11va_hwaccel_deps="d3d11va"
2250 vc1_d3d11va_hwaccel_select="vc1_decoder"
2251 vc1_d3d11va2_hwaccel_deps="d3d11va"
2252 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2253 vc1_dxva2_hwaccel_deps="dxva2"
2254 vc1_dxva2_hwaccel_select="vc1_decoder"
2255 vc1_mmal_hwaccel_deps="mmal"
2256 vc1_qsv_hwaccel_deps="libmfx"
2257 vc1_vaapi_hwaccel_deps="vaapi"
2258 vc1_vaapi_hwaccel_select="vc1_decoder"
2259 vc1_vdpau_hwaccel_deps="vdpau"
2260 vc1_vdpau_hwaccel_select="vc1_decoder"
2261 vp8_qsv_hwaccel_deps="libmfx"
2262 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2263 vp8_vaapi_hwaccel_select="vp8_decoder"
2264 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2265 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2266 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2267 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2268 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2269
2270 # hardware-accelerated codecs
2271 nvenc_deps_any="libdl LoadLibrary"
2272 omx_deps="libdl pthreads"
2273 omx_rpi_select="omx"
2274 qsv_deps="libmfx"
2275 qsvdec_select="qsv"
2276 qsvenc_select="qsv"
2277 vaapi_encode_deps="vaapi"
2278
2279 hwupload_cuda_filter_deps="cuda"
2280 scale_npp_filter_deps="cuda libnpp"
2281
2282 h264_mmal_decoder_deps="mmal"
2283 h264_nvenc_encoder_deps="nvenc"
2284 h264_omx_encoder_deps="omx"
2285 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2286 h264_qsv_encoder_select="qsvenc"
2287 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2288 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2289 hevc_nvenc_encoder_deps="nvenc"
2290 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2291 hevc_qsv_encoder_select="hevc_ps qsvenc"
2292 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2293 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2294 mjpeg_qsv_encoder_deps="libmfx"
2295 mjpeg_qsv_encoder_select="qsvenc"
2296 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2297 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2298 mpeg2_mmal_decoder_deps="mmal"
2299 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2300 mpeg2_qsv_encoder_select="qsvenc"
2301 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2302 mpeg2_vaapi_encoder_select="vaapi_encode"
2303 mpeg4_omx_encoder_deps="omx"
2304 vc1_mmal_decoder_deps="mmal"
2305 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2306 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2307 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2308 vp8_vaapi_encoder_select="vaapi_encode"
2309 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2310 vp9_vaapi_encoder_select="vaapi_encode"
2311
2312 nvenc_h264_encoder_select="h264_nvenc_encoder"
2313 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2314
2315 # parsers
2316 aac_parser_select="adts_header"
2317 h264_parser_select="golomb h264dsp h264parse"
2318 hevc_parser_select="hevc_ps"
2319 mpegaudio_parser_select="mpegaudioheader"
2320 mpegvideo_parser_select="mpegvideo"
2321 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2322 vc1_parser_select="vc1dsp"
2323
2324 # bitstream_filters
2325 aac_adtstoasc_bsf_select="adts_header"
2326 h264_metadata_bsf_select="cbs_h264"
2327 h264_redundant_pps_bsf_select="cbs_h264"
2328 hevc_metadata_bsf_select="cbs_h265"
2329 mjpeg2jpeg_bsf_select="jpegtables"
2330 trace_headers_bsf_select="cbs_h264 cbs_h265"
2331
2332 # external libraries
2333 avisynth_deps="LoadLibrary"
2334 avxsynth_deps="libdl"
2335 avisynth_demuxer_deps_any="avisynth avxsynth"
2336 avisynth_demuxer_select="riffdec"
2337 libdcadec_decoder_deps="libdcadec"
2338 libfaac_encoder_deps="libfaac"
2339 libfaac_encoder_select="audio_frame_queue"
2340 libfdk_aac_decoder_deps="libfdk_aac"
2341 libfdk_aac_encoder_deps="libfdk_aac"
2342 libfdk_aac_encoder_select="audio_frame_queue"
2343 libgsm_decoder_deps="libgsm"
2344 libgsm_encoder_deps="libgsm"
2345 libgsm_ms_decoder_deps="libgsm"
2346 libgsm_ms_encoder_deps="libgsm"
2347 libilbc_decoder_deps="libilbc"
2348 libilbc_encoder_deps="libilbc"
2349 libkvazaar_encoder_deps="libkvazaar"
2350 libmp3lame_encoder_deps="libmp3lame"
2351 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2352 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2353 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2354 libopencore_amrnb_encoder_select="audio_frame_queue"
2355 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2356 libopenh264_decoder_deps="libopenh264"
2357 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2358 libopenh264_encoder_deps="libopenh264"
2359 libopenjpeg_decoder_deps="libopenjpeg"
2360 libopenjpeg_encoder_deps="libopenjpeg"
2361 libopus_decoder_deps="libopus"
2362 libopus_encoder_deps="libopus"
2363 libopus_encoder_select="audio_frame_queue"
2364 libschroedinger_decoder_deps="libschroedinger"
2365 libschroedinger_encoder_deps="libschroedinger"
2366 libspeex_decoder_deps="libspeex"
2367 libspeex_encoder_deps="libspeex"
2368 libspeex_encoder_select="audio_frame_queue"
2369 libtheora_encoder_deps="libtheora"
2370 libtwolame_encoder_deps="libtwolame"
2371 libvo_aacenc_encoder_deps="libvo_aacenc"
2372 libvo_aacenc_encoder_select="audio_frame_queue"
2373 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2374 libvorbis_encoder_deps="libvorbis"
2375 libvorbis_encoder_select="audio_frame_queue"
2376 libvpx_vp8_decoder_deps="libvpx"
2377 libvpx_vp8_encoder_deps="libvpx"
2378 libvpx_vp9_decoder_deps="libvpx"
2379 libvpx_vp9_encoder_deps="libvpx"
2380 libwavpack_encoder_deps="libwavpack"
2381 libwavpack_encoder_select="audio_frame_queue"
2382 libwebp_encoder_deps="libwebp"
2383 libx262_encoder_deps="libx262"
2384 libx264_encoder_deps="libx264"
2385 libx265_encoder_deps="libx265"
2386 libxavs_encoder_deps="libxavs"
2387 libxvid_encoder_deps="libxvid mkstemp"
2388
2389 # demuxers / muxers
2390 ac3_demuxer_select="ac3_parser"
2391 asf_demuxer_select="riffdec"
2392 asf_muxer_select="riffenc"
2393 asf_stream_muxer_select="asf_muxer"
2394 avi_demuxer_select="iso_media riffdec"
2395 avi_muxer_select="riffenc"
2396 caf_demuxer_select="iso_media riffdec"
2397 dash_muxer_select="mp4_muxer"
2398 dirac_demuxer_select="dirac_parser"
2399 dv_demuxer_select="dvprofile"
2400 dv_muxer_select="dvprofile"
2401 dxa_demuxer_select="riffdec"
2402 eac3_demuxer_select="ac3_parser"
2403 f4v_muxer_select="mov_muxer"
2404 flac_demuxer_select="flac_parser"
2405 hds_muxer_select="flv_muxer"
2406 hls_muxer_select="mpegts_muxer"
2407 ipod_muxer_select="mov_muxer"
2408 ismv_muxer_select="mov_muxer"
2409 matroska_audio_muxer_select="matroska_muxer"
2410 matroska_demuxer_select="iso_media riffdec"
2411 matroska_demuxer_suggest="bzlib lzo zlib"
2412 matroska_muxer_select="iso_media riffenc"
2413 mmf_muxer_select="riffenc"
2414 mov_demuxer_select="iso_media riffdec"
2415 mov_demuxer_suggest="zlib"
2416 mov_muxer_select="iso_media riffenc rtpenc_chain"
2417 mp3_demuxer_select="mpegaudio_parser"
2418 mp3_muxer_select="mpegaudioheader"
2419 mp4_muxer_select="mov_muxer"
2420 mpegts_demuxer_select="iso_media"
2421 mpegts_muxer_select="adts_muxer latm_muxer"
2422 mpegtsraw_demuxer_select="mpegts_demuxer"
2423 mxf_d10_muxer_select="mxf_muxer"
2424 nut_muxer_select="riffenc"
2425 nuv_demuxer_select="riffdec"
2426 oga_muxer_select="ogg_muxer"
2427 ogg_demuxer_select="dirac_parse"
2428 opus_muxer_select="ogg_muxer"
2429 psp_muxer_select="mov_muxer"
2430 rtp_demuxer_select="sdp_demuxer"
2431 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2432 rtsp_demuxer_select="http_protocol rtpdec"
2433 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2434 sap_demuxer_select="sdp_demuxer"
2435 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2436 sdp_demuxer_select="rtpdec"
2437 smoothstreaming_muxer_select="ismv_muxer"
2438 spdif_demuxer_select="adts_header"
2439 spdif_muxer_select="adts_header"
2440 spx_muxer_select="ogg_muxer"
2441 swf_demuxer_suggest="zlib"
2442 tak_demuxer_select="tak_parser"
2443 tg2_muxer_select="mov_muxer"
2444 tgp_muxer_select="mov_muxer"
2445 w64_demuxer_select="wav_demuxer"
2446 wav_demuxer_select="riffdec"
2447 wav_muxer_select="riffenc"
2448 webm_muxer_select="iso_media riffenc"
2449 wtv_demuxer_select="mpegts_demuxer riffdec"
2450 xmv_demuxer_select="riffdec"
2451 xwma_demuxer_select="riffdec"
2452
2453 # indevs / outdevs
2454 alsa_indev_deps="alsa"
2455 alsa_outdev_deps="alsa"
2456 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2457 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2458 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2459 dv1394_indev_deps="dv1394"
2460 dv1394_indev_select="dv_demuxer"
2461 fbdev_indev_deps="linux_fb_h"
2462 jack_indev_deps="libjack"
2463 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2464 libcdio_indev_deps="libcdio"
2465 libdc1394_indev_deps="libdc1394"
2466 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2467 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2468 pulse_indev_deps="libpulse"
2469 sndio_indev_deps="sndio"
2470 sndio_outdev_deps="sndio"
2471 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2472 vfwcap_indev_deps="vfw32 vfwcap_defines"
2473 xcbgrab_indev_deps="libxcb libxcb_shape"
2474 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2475
2476 # protocols
2477 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2478 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2479 ffrtmpcrypt_protocol_select="tcp_protocol"
2480 ffrtmphttp_protocol_conflict="librtmp_protocol"
2481 ffrtmphttp_protocol_select="http_protocol"
2482 gopher_protocol_select="network"
2483 http_protocol_select="tcp_protocol"
2484 http_protocol_suggest="zlib"
2485 httpproxy_protocol_select="tcp_protocol"
2486 httpproxy_protocol_suggest="zlib"
2487 https_protocol_select="tls_protocol"
2488 https_protocol_suggest="zlib"
2489 icecast_protocol_select="http_protocol"
2490 librtmp_protocol_deps="librtmp"
2491 librtmpe_protocol_deps="librtmp"
2492 librtmps_protocol_deps="librtmp"
2493 librtmpt_protocol_deps="librtmp"
2494 librtmpte_protocol_deps="librtmp"
2495 mmsh_protocol_select="http_protocol"
2496 mmst_protocol_select="network"
2497 rtmp_protocol_conflict="librtmp_protocol"
2498 rtmp_protocol_select="tcp_protocol"
2499 rtmp_protocol_suggest="zlib"
2500 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2501 rtmpe_protocol_suggest="zlib"
2502 rtmps_protocol_conflict="librtmp_protocol"
2503 rtmps_protocol_select="tls_protocol"
2504 rtmps_protocol_suggest="zlib"
2505 rtmpt_protocol_select="ffrtmphttp_protocol"
2506 rtmpt_protocol_suggest="zlib"
2507 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2508 rtmpte_protocol_suggest="zlib"
2509 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2510 rtmpts_protocol_suggest="zlib"
2511 rtp_protocol_select="udp_protocol"
2512 sctp_protocol_deps="struct_sctp_event_subscribe"
2513 sctp_protocol_select="network"
2514 srtp_protocol_select="rtp_protocol srtp"
2515 tcp_protocol_select="network"
2516 tls_protocol_deps_any="gnutls openssl"
2517 tls_protocol_select="tcp_protocol"
2518 udp_protocol_select="network"
2519 unix_protocol_deps="sys_un_h"
2520 unix_protocol_select="network"
2521
2522 # filters
2523 asyncts_filter_deps="avresample"
2524 blackframe_filter_deps="gpl"
2525 boxblur_filter_deps="gpl"
2526 bs2b_filter_deps="libbs2b"
2527 cropdetect_filter_deps="gpl"
2528 deinterlace_qsv_filter_deps="libmfx"
2529 deinterlace_vaapi_filter_deps="vaapi"
2530 delogo_filter_deps="gpl"
2531 drawtext_filter_deps="libfreetype"
2532 drawtext_filter_suggest="libfontconfig"
2533 frei0r_filter_deps="frei0r libdl"
2534 frei0r_src_filter_deps="frei0r libdl"
2535 hdcd_filter_deps="libhdcd"
2536 hqdn3d_filter_deps="gpl"
2537 interlace_filter_deps="gpl"
2538 movie_filter_deps="avcodec avformat"
2539 ocv_filter_deps="libopencv"
2540 resample_filter_deps="avresample"
2541 scale_filter_deps="swscale"
2542 scale_qsv_filter_deps="libmfx"
2543 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2544
2545 # examples
2546 decode_audio_example_deps="avcodec avutil"
2547 decode_video_example_deps="avcodec avutil"
2548 encode_audio_example_deps="avcodec avutil"
2549 encode_video_example_deps="avcodec avutil"
2550 filter_audio_example_deps="avfilter avutil"
2551 metadata_example_deps="avformat avutil"
2552 output_example_deps="avcodec avformat avresample avutil swscale"
2553 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2554 transcode_aac_example_deps="avcodec avformat avresample"
2555
2556 # EXTRALIBS_LIST
2557 cpu_init_extralibs="pthreads_extralibs"
2558 cws2fws_extralibs="zlib_extralibs"
2559
2560 # libraries, in linking order
2561 avcodec_deps="avutil"
2562 avcodec_select="null_bsf"
2563 avdevice_deps="avformat avcodec avutil"
2564 avfilter_deps="avutil"
2565 avformat_deps="avcodec avutil"
2566 avformat_suggest="network"
2567 avresample_deps="avutil"
2568 swscale_deps="avutil"
2569
2570 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2571 avdevice_extralibs="libm_extralibs"
2572 avformat_extralibs="libm_extralibs"
2573 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2574 avresample_extralibs="libm_extralibs"
2575 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2576 swscale_extralibs="libm_extralibs"
2577
2578 # programs
2579 avconv_deps="avcodec avfilter avformat avresample swscale"
2580 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2581                fps_filter null_filter resample_filter scale_filter
2582                trim_filter"
2583 avconv_suggest="psapi shell32"
2584 avplay_deps="avcodec avfilter avformat avresample sdl"
2585 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2586 avplay_suggest="shell32"
2587 avprobe_deps="avcodec avformat"
2588 avprobe_suggest="shell32"
2589
2590 # documentation
2591 pod2man_deps="doc"
2592 texi2html_deps="doc"
2593
2594 # default parameters
2595
2596 logfile="avbuild/config.log"
2597
2598 # installation paths
2599 prefix_default="/usr/local"
2600 bindir_default='${prefix}/bin'
2601 datadir_default='${prefix}/share/avconv'
2602 docdir_default='${prefix}/share/doc/libav'
2603 incdir_default='${prefix}/include'
2604 libdir_default='${prefix}/lib'
2605 mandir_default='${prefix}/share/man'
2606 shlibdir_default="$libdir_default"
2607
2608 # toolchain
2609 ar_default="ar"
2610 cc_default="gcc"
2611 host_cc_default="gcc"
2612 x86asmexe_default="nasm"
2613 ln_s="ln -s -f"
2614 nm_default="nm -g"
2615 pkg_config_default=pkg-config
2616 ranlib="ranlib"
2617 strip="strip"
2618 version_script='--version-script'
2619
2620 # machine
2621 arch_default=$(uname -m)
2622 cpu="generic"
2623 intrinsics="none"
2624
2625 # OS
2626 target_os_default=$(tolower $(uname -s))
2627 host_os=$target_os_default
2628
2629 # configurable options
2630 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2631
2632 enable asm
2633 enable debug
2634 enable doc
2635 enable faan faandct faanidct
2636 enable optimizations
2637 enable safe_bitstream_reader
2638 enable static
2639 enable swscale_alpha
2640 enable valgrind_backtrace
2641
2642 # By default, enable only those hwaccels that have no external dependencies.
2643 enable d3d11va dxva2 vda vdpau
2644
2645 # internal components are enabled by default
2646 enable $EXTRALIBS_LIST
2647
2648 # Avoid external, non-system, libraries getting enabled by dependency resolution
2649 disable $EXTERNAL_LIBRARY_LIST
2650
2651 # build settings
2652 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2653 LIBPREF="lib"
2654 LIBSUF=".a"
2655 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2656 SLIBPREF="lib"
2657 SLIBSUF=".so"
2658 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2659 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2660 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2661 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2662 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2663 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2664 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2665
2666 asflags_filter=echo
2667 cflags_filter=echo
2668 ldflags_filter=echo
2669
2670 AS_C='-c'
2671 AS_O='-o $@'
2672 CC_C='-c'
2673 CC_E='-E -o $@'
2674 CC_O='-o $@'
2675 OBJCC_C='-c'
2676 OBJCC_E='-E -o $@'
2677 OBJCC_O='-o $@'
2678 X86ASM_O='-o $@'
2679 LD_O='-o $@'
2680 LD_LIB='-l%'
2681 LD_PATH='-L'
2682 HOSTCC_C='-c'
2683 HOSTCC_E='-E -o $@'
2684 HOSTCC_O='-o $@'
2685 HOSTLD_O='-o $@'
2686
2687 host_extralibs='-lm'
2688 host_cflags_filter=echo
2689 host_ldflags_filter=echo
2690
2691 target_path='$(CURDIR)'
2692
2693 # since the object filename is not given with the -MM flag, the compiler
2694 # is only able to print the basename, and we must add the path ourselves
2695 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2696 DEPFLAGS='-MM'
2697
2698 mkdir -p avbuild
2699
2700 # find source path
2701 if test -f configure; then
2702     source_path=.
2703 else
2704     source_path=$(cd $(dirname "$0"); pwd)
2705     echo "$source_path" | grep -q '[[:blank:]]' &&
2706         die "Out of tree builds are impossible with whitespace in source path."
2707     test -e "$source_path/config.h" &&
2708         die "Out of tree builds are impossible with config.h in source dir."
2709 fi
2710
2711 for v in "$@"; do
2712     r=${v#*=}
2713     l=${v%"$r"}
2714     r=$(sh_quote "$r")
2715     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2716 done
2717
2718 find_things(){
2719     thing=$1
2720     pattern=$2
2721     file=$source_path/$3
2722     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2723 }
2724
2725 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2726 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2727 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2728 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2729 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2730 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2731 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2732 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2733 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2734
2735 find_things_extern(){
2736     thing=$1
2737     pattern=$2
2738     file=$source_path/$3
2739     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2740 }
2741
2742 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2743 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2744
2745 AVCODEC_COMPONENTS_LIST="
2746     $BSF_LIST
2747     $DECODER_LIST
2748     $ENCODER_LIST
2749     $HWACCEL_LIST
2750     $PARSER_LIST
2751 "
2752
2753 AVDEVICE_COMPONENTS_LIST="
2754     $INDEV_LIST
2755     $OUTDEV_LIST
2756 "
2757
2758 AVFILTER_COMPONENTS_LIST="
2759     $FILTER_LIST
2760 "
2761
2762 AVFORMAT_COMPONENTS_LIST="
2763     $DEMUXER_LIST
2764     $MUXER_LIST
2765     $PROTOCOL_LIST
2766 "
2767
2768 ALL_COMPONENTS="
2769     $AVCODEC_COMPONENTS_LIST
2770     $AVDEVICE_COMPONENTS_LIST
2771     $AVFILTER_COMPONENTS_LIST
2772     $AVFORMAT_COMPONENTS_LIST
2773 "
2774
2775 for n in $COMPONENT_LIST; do
2776     v=$(toupper ${n%s})_LIST
2777     eval enable \$$v
2778     eval ${n}_if_any="\$$v"
2779 done
2780
2781 enable $ARCH_EXT_LIST
2782
2783 die_unknown(){
2784     echo "Unknown option \"$1\"."
2785     echo "See $0 --help for available options."
2786     exit 1
2787 }
2788
2789 print_3_columns() {
2790     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2791 }
2792
2793 show_list() {
2794     suffix=_$1
2795     shift
2796     echo $* | sed s/$suffix//g | print_3_columns
2797     exit 0
2798 }
2799
2800 rand_list(){
2801     IFS=', '
2802     set -- $*
2803     unset IFS
2804     for thing; do
2805         comp=${thing%:*}
2806         prob=${thing#$comp}
2807         prob=${prob#:}
2808         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2809         echo "prob ${prob:-0.5}"
2810         printf '%s\n' $comp
2811     done
2812 }
2813
2814 do_random(){
2815     action=$1
2816     shift
2817     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2818     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2819 }
2820
2821 for opt do
2822     optval="${opt#*=}"
2823     case "$opt" in
2824         --extra-ldflags=*)
2825             add_ldflags $optval
2826         ;;
2827         --extra-ldexeflags=*)
2828             add_ldexeflags $optval
2829         ;;
2830         --extra-ldsoflags=*)
2831             add_ldsoflags $optval
2832         ;;
2833         --extra-libs=*)
2834             add_extralibs $optval
2835         ;;
2836         --disable-devices)
2837             disable $INDEV_LIST $OUTDEV_LIST
2838         ;;
2839         --enable-debug=*)
2840             debuglevel="$optval"
2841         ;;
2842         --disable-programs)
2843             disable $PROGRAM_LIST
2844         ;;
2845         --disable-everything)
2846             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2847         ;;
2848         --disable-all)
2849             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2850             disable $LIBRARY_LIST $PROGRAM_LIST doc
2851         ;;
2852         --enable-random|--disable-random)
2853             action=${opt%%-random}
2854             do_random ${action#--} $COMPONENT_LIST
2855         ;;
2856         --enable-random=*|--disable-random=*)
2857             action=${opt%%-random=*}
2858             do_random ${action#--} $optval
2859         ;;
2860         --enable-*=*|--disable-*=*)
2861             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2862             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2863             eval list=\$$(toupper $thing)_LIST
2864             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2865             $action $(filter "$name" $list)
2866         ;;
2867         --enable-avserver|--disable-avserver*)
2868             warn "avserver has been removed, the ${opt} option is only"\
2869                  "provided for compatibility and will be removed in the future"
2870         ;;
2871         --enable-yasm|--disable-yasm)
2872             warn "The ${opt} option is only provided for compatibility and will be\n"\
2873                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2874             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2875         ;;
2876         --enable-?*|--disable-?*)
2877             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2878             if is_in $option $COMPONENT_LIST; then
2879                 test $action = disable && action=unset
2880                 eval $action \$$(toupper ${option%s})_LIST
2881             elif is_in $option $CMDLINE_SELECT; then
2882                 $action $option
2883             else
2884                 die_unknown $opt
2885             fi
2886         ;;
2887         --list-*)
2888             NAME="${opt#--list-}"
2889             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2890             NAME=${NAME%s}
2891             eval show_list $NAME \$$(toupper $NAME)_LIST
2892         ;;
2893         --help|-h) show_help
2894         ;;
2895         --quiet|-q) quiet=yes
2896         ;;
2897         *)
2898             optname="${opt%%=*}"
2899             optname="${optname#--}"
2900             optname=$(echo "$optname" | sed 's/-/_/g')
2901             if is_in $optname $CMDLINE_SET; then
2902                 eval $optname='$optval'
2903             elif is_in $optname $CMDLINE_APPEND; then
2904                 append $optname "$optval"
2905             else
2906                 die_unknown $opt
2907             fi
2908         ;;
2909     esac
2910 done
2911
2912 for e in $env; do
2913     eval "export $e"
2914 done
2915
2916 disabled logging && logfile=/dev/null
2917
2918 # Die early if licensing-related configure options are incompatible.
2919 die_license_disabled() {
2920     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2921 }
2922
2923 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2924 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2925 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2926
2927 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2928
2929 enabled_all gnutls openssl &&
2930     die "GnuTLS and OpenSSL must not be enabled at the same time."
2931
2932 # Disable all the library-specific components if the library itself
2933 # is disabled, see AVCODEC_LIST and following _LIST variables.
2934
2935 disable_components(){
2936     disabled ${1} && disable $(
2937         eval components="\$$(toupper ${1})_COMPONENTS"
2938         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2939     )
2940 }
2941
2942 map 'disable_components $v' $LIBRARY_LIST
2943
2944 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2945 set >> $logfile
2946
2947 case "$toolchain" in
2948     *-asan)
2949         cc_default="${toolchain%-asan}"
2950         add_cflags  -fsanitize=address
2951         add_ldflags -fsanitize=address
2952     ;;
2953     *-msan)
2954         cc_default="${toolchain%-msan}"
2955         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2956         add_ldflags -fsanitize=memory
2957     ;;
2958     *-tsan)
2959         cc_default="${toolchain%-tsan}"
2960         add_cflags  -fsanitize=thread -fPIE
2961         add_ldflags -fsanitize=thread -pie
2962         case "$toolchain" in
2963             gcc-tsan)
2964                 add_cflags  -fPIC
2965                 add_ldflags -fPIC
2966                 ;;
2967         esac
2968     ;;
2969     *-usan)
2970         cc_default="${toolchain%-usan}"
2971         add_cflags  -fsanitize=undefined
2972         add_ldflags -fsanitize=undefined
2973         case "$toolchain" in
2974             clang-usan)
2975                 add_cflags -O1
2976                 ;;
2977         esac
2978     ;;
2979     valgrind-*)
2980         target_exec_default="valgrind"
2981         case "$toolchain" in
2982             valgrind-massif)
2983                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2984                 ;;
2985             valgrind-memcheck)
2986                 target_exec_args="--track-origins=yes --leak-check=full"
2987                 ;;
2988         esac
2989     ;;
2990     msvc)
2991         # Check whether the current MSVC version needs the C99 converter.
2992         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2993         # support enough of C99 to build libav. Default to the new
2994         # behaviour if the regexp was unable to match anything, since this
2995         # successfully parses the version number of existing supported
2996         # versions that require the converter (MSVC 2010 and 2012).
2997         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2998         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2999             cc_default="cl"
3000         else
3001             cc_default="c99wrap cl"
3002         fi
3003         ld_default="$source_path/compat/windows/mslink"
3004         nm_default="dumpbin -symbols"
3005         ar_default="lib"
3006         case "$arch" in
3007         arm*)
3008             as_default="armasm"
3009             ;;
3010         esac
3011         target_os_default="win32"
3012         # Use a relative path for TMPDIR. This makes sure all the
3013         # ffconf temp files are written with a relative path, avoiding
3014         # issues with msys/win32 path conversion for MSVC parameters
3015         # such as -Fo<file> or -out:<file>.
3016         TMPDIR=.
3017     ;;
3018     icl)
3019         cc_default="icl"
3020         ld_default="xilink"
3021         nm_default="dumpbin -symbols"
3022         ar_default="xilib"
3023         target_os_default="win32"
3024         TMPDIR=.
3025     ;;
3026     gcov)
3027         add_cflags  -fprofile-arcs -ftest-coverage
3028         add_ldflags -fprofile-arcs -ftest-coverage
3029     ;;
3030     llvm-cov)
3031         add_cflags -fprofile-arcs -ftest-coverage
3032         add_ldflags --coverage
3033     ;;
3034     hardened)
3035         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3036         add_cflags   -fno-strict-overflow -fstack-protector-all
3037         add_ldflags  -Wl,-z,relro -Wl,-z,now
3038     ;;
3039     ?*)
3040         die "Unknown toolchain $toolchain"
3041     ;;
3042 esac
3043
3044 test -n "$cross_prefix" && enable cross_compile
3045
3046 if enabled cross_compile; then
3047     test -n "$arch" && test -n "$target_os" ||
3048         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3049 fi
3050
3051 ar_default="${cross_prefix}${ar_default}"
3052 cc_default="${cross_prefix}${cc_default}"
3053 objcc_default="${cross_prefix}${objcc_default}"
3054 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3055 nm_default="${cross_prefix}${nm_default}"
3056 pkg_config_default="${cross_prefix}${pkg_config_default}"
3057 ranlib="${cross_prefix}${ranlib}"
3058 strip="${cross_prefix}${strip}"
3059
3060 sysinclude_default="${sysroot}/usr/include"
3061
3062 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3063 enabled cross_compile || host_cc_default=$cc
3064 set_default host_cc
3065
3066 if ! $pkg_config --version >/dev/null 2>&1; then
3067     warn "$pkg_config not found, library detection may fail."
3068     pkg_config=false
3069 fi
3070
3071 exesuf() {
3072     case $1 in
3073         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3074     esac
3075 }
3076
3077 EXESUF=$(exesuf $target_os)
3078 HOSTEXESUF=$(exesuf $host_os)
3079
3080 # set temporary file name
3081 : ${TMPDIR:=$TEMPDIR}
3082 : ${TMPDIR:=$TMP}
3083 : ${TMPDIR:=/tmp}
3084
3085 if ! check_cmd mktemp -u XXXXXX; then
3086     # simple replacement for missing mktemp
3087     # NOT SAFE FOR GENERAL USE
3088     mktemp(){
3089         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3090         echo "$tmpname"
3091         mkdir "$tmpname"
3092     }
3093 fi
3094
3095 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3096     die "Unable to create temporary directory in $TMPDIR."
3097
3098 tmpfile(){
3099     tmp="${AVTMPDIR}/test"$2
3100     (set -C; exec > $tmp) 2> /dev/null ||
3101         die "Unable to create temporary file in $AVTMPDIR."
3102     eval $1=$tmp
3103 }
3104
3105 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3106 trap 'exit 2' INT
3107
3108 tmpfile TMPASM .asm
3109 tmpfile TMPC   .c
3110 tmpfile TMPE   $EXESUF
3111 tmpfile TMPH   .h
3112 tmpfile TMPO   .o
3113 tmpfile TMPS   .S
3114 tmpfile TMPSH  .sh
3115 tmpfile TMPV   .ver
3116
3117 unset -f mktemp
3118
3119 chmod +x $TMPE
3120
3121 # make sure we can execute files in $TMPDIR
3122 cat > $TMPSH 2>> $logfile <<EOF
3123 #! /bin/sh
3124 EOF
3125 chmod +x $TMPSH >> $logfile 2>&1
3126 if ! $TMPSH >> $logfile 2>&1; then
3127     cat <<EOF
3128 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3129 variable to another directory and make sure that it is not mounted noexec.
3130 EOF
3131     die "Sanity test failed."
3132 fi
3133
3134 armasm_flags(){
3135     for flag; do
3136         case $flag in
3137             # Filter out MSVC cl.exe options from cflags that shouldn't
3138             # be passed to gas-preprocessor
3139             -M[TD]*)                                            ;;
3140             *)                  echo $flag                      ;;
3141         esac
3142    done
3143 }
3144
3145 ccc_flags(){
3146     for flag; do
3147         case $flag in
3148             -std=c99)           echo -c99                       ;;
3149             -mcpu=*)            echo -arch ${flag#*=}           ;;
3150             -mieee)             echo -ieee                      ;;
3151             -O*|-fast)          echo $flag                      ;;
3152             -fno-math-errno)    echo -assume nomath_errno       ;;
3153             -g)                 echo -g3                        ;;
3154             -Wall)              echo -msg_enable level2         ;;
3155             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3156             -Wl,*)              echo $flag                      ;;
3157             -f*|-W*)                                            ;;
3158             *)                  echo $flag                      ;;
3159         esac
3160    done
3161 }
3162
3163 cparser_flags(){
3164     for flag; do
3165         case $flag in
3166             -Wno-switch)             echo -Wno-switch-enum ;;
3167             -Wno-format-zero-length) ;;
3168             -Wdisabled-optimization) ;;
3169             -Wno-pointer-sign)       echo -Wno-other ;;
3170             *)                       echo $flag ;;
3171         esac
3172     done
3173 }
3174
3175 msvc_common_flags(){
3176     for flag; do
3177         case $flag in
3178             # In addition to specifying certain flags under the compiler
3179             # specific filters, they must be specified here as well or else the
3180             # generic catch all at the bottom will print the original flag.
3181             -Wall)                ;;
3182             -Wextra)              ;;
3183             -std=c99)             ;;
3184             # Common flags
3185             -fomit-frame-pointer) ;;
3186             -g)                   echo -Z7 ;;
3187             -fno-math-errno)      ;;
3188             -fno-common)          ;;
3189             -fno-signed-zeros)    ;;
3190             -fPIC)                ;;
3191             -mthumb)              ;;
3192             -march=*)             ;;
3193             -lz)                  echo zlib.lib ;;
3194             -lx264)               echo libx264.lib ;;
3195             -l*)                  echo ${flag#-l}.lib ;;
3196             -L*)                  echo -libpath:${flag#-L} ;;
3197             *)                    echo $flag ;;
3198         esac
3199     done
3200 }
3201
3202 msvc_flags(){
3203     msvc_common_flags "$@"
3204     for flag; do
3205         case $flag in
3206             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3207                                        -wd4554 ;;
3208             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3209                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3210                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3211                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3212         esac
3213     done
3214 }
3215
3216 icl_flags(){
3217     msvc_common_flags "$@"
3218     for flag; do
3219         case $flag in
3220             # Despite what Intel's documentation says -Wall, which is supported
3221             # on Windows, does enable remarks so disable them here.
3222             -Wall)                echo $flag -Qdiag-disable:remark ;;
3223             -std=c99)             echo -Qstd=c99 ;;
3224         esac
3225     done
3226 }
3227
3228 pgi_flags(){
3229     for flag; do
3230         case $flag in
3231             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3232             -fomit-frame-pointer) echo -Mnoframe ;;
3233             -g)                   echo -gopt ;;
3234             *)                    echo $flag ;;
3235         esac
3236     done
3237 }
3238
3239 suncc_flags(){
3240     for flag; do
3241         case $flag in
3242             -march=*|-mcpu=*)
3243                 case "${flag#*=}" in
3244                     native)                   echo -xtarget=native       ;;
3245                     v9|niagara)               echo -xarch=sparc          ;;
3246                     ultrasparc)               echo -xarch=sparcvis       ;;
3247                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3248                     i586|pentium)             echo -xchip=pentium        ;;
3249                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3250                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3251                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3252                     pentium4*)          echo -xtarget=pentium4           ;;
3253                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3254                     *-sse3)             echo -xarch=sse3                 ;;
3255                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3256                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3257                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3258                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3259                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3260                     k8|opteron|athlon64|athlon-fx)
3261                                                echo -xarch=sse2a         ;;
3262                     athlon*)                   echo -xarch=pentium_proa  ;;
3263                 esac
3264                 ;;
3265             -std=c99)             echo -xc99              ;;
3266             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3267             -fPIC)                echo -KPIC -xcode=pic32 ;;
3268             -W*,*)                echo $flag              ;;
3269             -f*-*|-W*|-mimpure-text)                      ;;
3270             -shared)              echo -G                 ;;
3271             *)                    echo $flag              ;;
3272         esac
3273     done
3274 }
3275
3276 tms470_flags(){
3277     for flag; do
3278         case $flag in
3279             -march=*|-mcpu=*)
3280                 case "${flag#*=}" in
3281                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3282                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3283                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3284                     armv6*|arm11*)          echo -mv=6   ;;
3285                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3286                                             echo -mv=5e  ;;
3287                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3288                 esac
3289                 ;;
3290             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3291             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3292             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3293             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3294             -msoft-float)   echo --float_support=vfplib       ;;
3295             -O[0-3]|-mf=*)  echo $flag                        ;;
3296             -g)             echo -g -mn                       ;;
3297             -pds=*)         echo $flag                        ;;
3298             -D*|-I*)        echo $flag                        ;;
3299             --gcc|--abi=*)  echo $flag                        ;;
3300             -me)            echo $flag                        ;;
3301         esac
3302     done
3303 }
3304
3305 probe_cc(){
3306     pfx=$1
3307     _cc=$2
3308
3309     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3310     unset _ld_o _ldflags _ld_lib _ld_path
3311     unset _depflags _DEPCMD _DEPFLAGS
3312     _flags_filter=echo
3313
3314     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3315         _type=llvm_gcc
3316         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3317         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3318         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3319         _cflags_speed='-O3'
3320         _cflags_size='-Os'
3321     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3322         _type=gcc
3323         gcc_version=$($_cc --version | head -n1)
3324         gcc_basever=$($_cc -dumpversion)
3325         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3326         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3327         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3328         if ! $_cc -dumpversion | grep -q '^2\.'; then
3329             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3330         fi
3331         _cflags_speed='-O3'
3332         _cflags_size='-Os'
3333     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3334         _type=icc
3335         _ident=$($_cc --version | head -n1)
3336         _depflags='-MMD'
3337         _cflags_speed='-O3'
3338         _cflags_size='-Os'
3339         _cflags_noopt='-O1'
3340     elif $_cc -v 2>&1 | grep -q xlc; then
3341         _type=xlc
3342         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3343         _cflags_speed='-O5'
3344         _cflags_size='-O5 -qcompact'
3345     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3346         _type=ccc
3347         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3348         _DEPFLAGS='-M'
3349         _cflags_speed='-fast'
3350         _cflags_size='-O1'
3351         _flags_filter=ccc_flags
3352     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3353         test -d "$sysroot" || die "No valid sysroot specified."
3354         _type=armcc
3355         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3356         armcc_conf="$PWD/armcc.conf"
3357         $_cc --arm_linux_configure                 \
3358              --arm_linux_config_file="$armcc_conf" \
3359              --configure_sysroot="$sysroot"        \
3360              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3361              die "Error creating armcc configuration file."
3362         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3363         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3364         as_default="${cross_prefix}gcc"
3365         _depflags='-MMD'
3366         _cflags_speed='-O3'
3367         _cflags_size='-Os'
3368     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3369         _type=tms470
3370         _ident=$($_cc -version | head -n1 | tr -s ' ')
3371         _flags='--gcc --abi=eabi -me'
3372         _cc_e='-ppl -fe=$@'
3373         _cc_o='-fe=$@'
3374         _depflags='-ppa -ppd=$(@:.o=.d)'
3375         _cflags_speed='-O3 -mf=5'
3376         _cflags_size='-O3 -mf=2'
3377         _flags_filter=tms470_flags
3378     elif $_cc -v 2>&1 | grep -q clang; then
3379         _type=clang
3380         _ident=$($_cc --version 2>/dev/null | head -n1)
3381         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3382         _cflags_speed='-O3'
3383         _cflags_size='-Os'
3384     elif $_cc -V 2>&1 | grep -q Sun; then
3385         _type=suncc
3386         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3387         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3388         _DEPFLAGS='-xM1 -xc99'
3389         _ldflags='-std=c99'
3390         _cflags_speed='-O5'
3391         _cflags_size='-O5 -xspace'
3392         _flags_filter=suncc_flags
3393     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3394         _type=pathscale
3395         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3396         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3397         _cflags_speed='-O2'
3398         _cflags_size='-Os'
3399         _flags_filter='filter_out -Wdisabled-optimization'
3400     elif $_cc -v 2>&1 | grep -q Open64; then
3401         _type=open64
3402         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3403         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3404         _cflags_speed='-O2'
3405         _cflags_size='-Os'
3406         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3407     elif $_cc -V 2>&1 | grep -q Portland; then
3408         _type=pgi
3409         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3410         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3411         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3412         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3413         _cflags_noopt="-O1"
3414         _flags_filter=pgi_flags
3415     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3416         _type=armasm
3417         _ident=$($_cc | head -n1)
3418         # 4509: "This form of conditional instruction is deprecated"
3419         _flags="-nologo -ignore 4509"
3420         _flags_filter=armasm_flags
3421     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3422         _type=msvc
3423         _ident=$($_cc 2>&1 | head -n1)
3424         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3425         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3426         _cflags_speed="-O2"
3427         _cflags_size="-O1"
3428         _cflags_noopt="-O1"
3429         if $_cc -nologo- 2>&1 | grep -q Linker; then
3430             _ld_o='-out:$@'
3431         else
3432             _ld_o='-Fe$@'
3433         fi
3434         _cc_o='-Fo$@'
3435         _cc_e='-P -Fi$@'
3436         _flags_filter=msvc_flags
3437         _ld_lib='lib%.a'
3438         _ld_path='-libpath:'
3439         _flags='-nologo'
3440     elif $_cc 2>&1 | grep -q Intel; then
3441         _type=icl
3442         _ident=$($_cc 2>&1 | head -n1)
3443         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3444         # Not only is O3 broken on 13.x+ but it is slower on all previous
3445         # versions (tested) as well.
3446         _cflags_speed="-O2"
3447         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3448         if $_cc 2>&1 | grep -q Linker; then
3449             _ld_o='-out:$@'
3450         else
3451             _ld_o='-Fe$@'
3452         fi
3453         _cc_o='-Fo$@'
3454         _cc_e='-P'
3455         _flags_filter=icl_flags
3456         _ld_lib='lib%.a'
3457         _ld_path='-libpath:'
3458         # -Qdiag-error to make icl error when seeing certain unknown arguments
3459         _flags='-nologo -Qdiag-error:4044,10157'
3460         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3461         # with MSVC which enables it by default.
3462         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3463     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3464         # lld can emulate multiple different linkers; in ms link.exe mode,
3465         # the -? parameter gives the help output which contains an identifyable
3466         # string, while it gives an error in other modes.
3467         _type=lld-link
3468         # The link.exe mode doesn't have a switch for getting the version,
3469         # but we can force it back to gnu mode and get the version from there.
3470         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3471         _ld_o='-out:$@'
3472         _flags_filter=msvc_flags
3473         _ld_lib='lib%.a'
3474         _ld_path='-libpath:'
3475     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3476         _type=cparser
3477         _ident=$($_cc --version | head -n1)
3478         _depflags='-MMD'
3479         _cflags_speed='-O4'
3480         _cflags_size='-O2'
3481         _flags_filter=cparser_flags
3482     fi
3483
3484     eval ${pfx}_type=\$_type
3485     eval ${pfx}_ident=\$_ident
3486 }
3487
3488 set_ccvars(){
3489     eval ${1}_C=\${_cc_c-\${${1}_C}}
3490     eval ${1}_E=\${_cc_e-\${${1}_E}}
3491     eval ${1}_O=\${_cc_o-\${${1}_O}}
3492
3493     if [ -n "$_depflags" ]; then
3494         eval ${1}_DEPFLAGS=\$_depflags
3495     else
3496         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3497         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3498         eval DEP${1}FLAGS=\$_flags
3499     fi
3500 }
3501
3502 probe_cc cc "$cc"
3503 cflags_filter=$_flags_filter
3504 cflags_speed=$_cflags_speed
3505 cflags_size=$_cflags_size
3506 cflags_noopt=$_cflags_noopt
3507 add_cflags $_flags $_cflags
3508 cc_ldflags=$_ldflags
3509 set_ccvars CC
3510
3511 probe_cc hostcc "$host_cc"
3512 host_cflags_filter=$_flags_filter
3513 host_cflags_speed=$_cflags_speed
3514 add_host_cflags  $_flags $_cflags
3515 set_ccvars HOSTCC
3516
3517 test -n "$cc_type" && enable $cc_type ||
3518     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3519
3520 : ${as_default:=$cc}
3521 : ${objcc_default:=$cc}
3522 : ${dep_cc_default:=$cc}
3523 : ${ld_default:=$cc}
3524 : ${host_ld_default:=$host_cc}
3525 set_default ar as objcc dep_cc ld host_ld
3526
3527 probe_cc as "$as"
3528 asflags_filter=$_flags_filter
3529 add_asflags $_flags $_cflags
3530 set_ccvars AS
3531
3532 probe_cc objcc "$objcc"
3533 objcflags_filter=$_flags_filter
3534 add_objcflags $_flags $_cflags
3535 set_ccvars OBJC
3536
3537 probe_cc ld "$ld"
3538 ldflags_filter=$_flags_filter
3539 add_ldflags $_flags $_ldflags
3540 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3541 LD_O=${_ld_o-$LD_O}
3542 LD_LIB=${_ld_lib-$LD_LIB}
3543 LD_PATH=${_ld_path-$LD_PATH}
3544
3545 probe_cc hostld "$host_ld"
3546 host_ldflags_filter=$_flags_filter
3547 add_host_ldflags $_flags $_ldflags
3548 HOSTLD_O=${_ld_o-$HOSTLD_O}
3549
3550 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3551     probe_cc depcc "$dep_cc"
3552     CCDEP=${_DEPCMD:-$DEPCMD}
3553     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3554     DEPCCFLAGS=$_flags
3555 fi
3556
3557 if $ar 2>&1 | grep -q Microsoft; then
3558     arflags="-nologo"
3559     ar_o='-out:$@'
3560 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3561     arflags="rq"
3562     ar_o='$@'
3563 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3564     arflags='-Xany -r -c'
3565     ar_o='$@'
3566 else
3567     arflags="rc"
3568     ar_o='$@'
3569 fi
3570
3571 add_cflags $extra_cflags
3572 add_objcflags $extra_objcflags
3573 add_asflags $extra_cflags
3574
3575 if test -n "$sysroot"; then
3576     case "$cc_type" in
3577         gcc|llvm_gcc|clang)
3578             add_cppflags --sysroot="$sysroot"
3579             add_ldflags --sysroot="$sysroot"
3580         ;;
3581         tms470)
3582             add_cppflags -I"$sysinclude"
3583             add_ldflags  --sysroot="$sysroot"
3584         ;;
3585     esac
3586 fi
3587
3588 if test "$cpu" = host; then
3589     enabled cross_compile &&
3590         die "--cpu=host makes no sense when cross-compiling."
3591
3592     case "$cc_type" in
3593         gcc|llvm_gcc)
3594             check_native(){
3595                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3596                 sed -n "/cc1.*$1=/{
3597                             s/.*$1=\\([^ ]*\\).*/\\1/
3598                             p
3599                             q
3600                         }" $TMPE
3601             }
3602             cpu=$(check_native -march || check_native -mcpu)
3603         ;;
3604     esac
3605
3606     test "${cpu:-host}" = host &&
3607         die "--cpu=host not supported with compiler $cc"
3608 fi
3609
3610 # Deal with common $arch aliases
3611 case "$arch" in
3612     aarch64|arm64)
3613         arch="aarch64"
3614     ;;
3615     arm*)
3616         arch="arm"
3617     ;;
3618     mips*|IP*)
3619         case "$arch" in
3620         *el)
3621             add_cppflags -EL
3622             add_ldflags -EL
3623         ;;
3624         *eb)
3625             add_cppflags -EB
3626             add_ldflags -EB
3627         ;;
3628         esac
3629         arch="mips"
3630     ;;
3631     parisc*|hppa*)
3632         arch="parisc"
3633     ;;
3634     "Power Macintosh"|ppc*|powerpc*)
3635         arch="ppc"
3636     ;;
3637     s390|s390x)
3638         arch="s390"
3639     ;;
3640     sh4|sh)
3641         arch="sh4"
3642     ;;
3643     sun4u|sparc*)
3644         arch="sparc"
3645     ;;
3646     tilegx|tile-gx)
3647         arch="tilegx"
3648     ;;
3649     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3650         arch="x86"
3651     ;;
3652 esac
3653
3654 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3655 enable $arch
3656
3657 # Add processor-specific flags
3658 if enabled aarch64; then
3659
3660     case $cpu in
3661         armv*)
3662             cpuflags="-march=$cpu"
3663         ;;
3664         *)
3665             cpuflags="-mcpu=$cpu"
3666         ;;
3667     esac
3668
3669 elif enabled alpha; then
3670
3671     cpuflags="-mcpu=$cpu"
3672
3673 elif enabled arm; then
3674
3675     check_arm_arch() {
3676         check_cpp_condition stddef.h \
3677             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3678             $cpuflags
3679     }
3680
3681     probe_arm_arch() {
3682         if   check_arm_arch 4;        then echo armv4
3683         elif check_arm_arch 4T;       then echo armv4t
3684         elif check_arm_arch 5;        then echo armv5
3685         elif check_arm_arch 5E;       then echo armv5e
3686         elif check_arm_arch 5T;       then echo armv5t
3687         elif check_arm_arch 5TE;      then echo armv5te
3688         elif check_arm_arch 5TEJ;     then echo armv5te
3689         elif check_arm_arch 6;        then echo armv6
3690         elif check_arm_arch 6J;       then echo armv6j
3691         elif check_arm_arch 6K;       then echo armv6k
3692         elif check_arm_arch 6Z;       then echo armv6z
3693         elif check_arm_arch 6ZK;      then echo armv6zk
3694         elif check_arm_arch 6T2;      then echo armv6t2
3695         elif check_arm_arch 7;        then echo armv7
3696         elif check_arm_arch 7A  7_A;  then echo armv7-a
3697         elif check_arm_arch 7S;       then echo armv7-a
3698         elif check_arm_arch 7R  7_R;  then echo armv7-r
3699         elif check_arm_arch 7M  7_M;  then echo armv7-m
3700         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3701         elif check_arm_arch 8A  8_A;  then echo armv8-a
3702         fi
3703     }
3704
3705     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3706
3707     case $cpu in
3708         armv*)
3709             cpuflags="-march=$cpu"
3710             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3711         ;;