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

   1 #!/bin/sh
   2 #
   3 # Libav configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken Libav."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --prefix=PREFIX          install in PREFIX [$prefix_default]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
  91
  92 Licensing options:
  93   --enable-gpl             allow use of GPL code, the resulting libs
  94                            and binaries will be under GPL [no]
  95   --enable-version3        upgrade (L)GPL to version 3 [no]
  96   --enable-nonfree         allow use of nonfree code, the resulting libs
  97                            and binaries will be unredistributable [no]
  98
  99 Configuration options:
 100   --disable-static         do not build static libraries [no]
 101   --enable-shared          build shared libraries [no]
 102   --enable-small           optimize for size instead of speed
 103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
 104   --enable-gray            enable full grayscale support (slower color)
 105   --disable-swscale-alpha  disable alpha channel support in swscale
 106   --disable-all            disable building components, libraries and programs
 107
 108 Program options:
 109   --disable-programs       do not build command line programs
 110   --disable-avconv         disable avconv build
 111   --disable-avplay         disable avplay build
 112   --disable-avprobe        disable avprobe build
 113   --disable-avserver       deprecated, does nothing
 114
 115 Component options:
 116   --disable-doc            do not build documentation
 117   --disable-pod2man        do not build manual pages
 118   --disable-texi2html      do not build HTML documentation
 119   --disable-avdevice       disable libavdevice build
 120   --disable-avcodec        disable libavcodec build
 121   --disable-avformat       disable libavformat build
 122   --disable-avutil         disable libavutil build
 123   --disable-swscale        disable libswscale build
 124   --disable-avfilter       disable video filter support [no]
 125   --disable-avresample     disable libavresample build [no]
 126   --disable-pthreads       disable pthreads [auto]
 127   --disable-w32threads     disable Win32 threads [auto]
 128   --disable-network        disable network support [no]
 129   --disable-dct            disable DCT code
 130   --disable-error-resilience disable error resilience code
 131   --disable-lsp            disable LSP code
 132   --disable-lzo            disable LZO decoder code
 133   --disable-mdct           disable MDCT code
 134   --disable-rdft           disable RDFT code
 135   --disable-fft            disable FFT code
 136   --disable-faan           disable floating point AAN (I)DCT code
 137
 138 Individual component options:
 139   --disable-everything     disable all components listed below
 140   --disable-encoder=NAME   disable encoder NAME
 141   --enable-encoder=NAME    enable encoder NAME
 142   --disable-encoders       disable all encoders
 143   --disable-decoder=NAME   disable decoder NAME
 144   --enable-decoder=NAME    enable decoder NAME
 145   --disable-decoders       disable all decoders
 146   --disable-hwaccel=NAME   disable hwaccel NAME
 147   --enable-hwaccel=NAME    enable hwaccel NAME
 148   --disable-hwaccels       disable all hwaccels
 149   --disable-muxer=NAME     disable muxer NAME
 150   --enable-muxer=NAME      enable muxer NAME
 151   --disable-muxers         disable all muxers
 152   --disable-demuxer=NAME   disable demuxer NAME
 153   --enable-demuxer=NAME    enable demuxer NAME
 154   --disable-demuxers       disable all demuxers
 155   --enable-parser=NAME     enable parser NAME
 156   --disable-parser=NAME    disable parser NAME
 157   --disable-parsers        disable all parsers
 158   --enable-bsf=NAME        enable bitstream filter NAME
 159   --disable-bsf=NAME       disable bitstream filter NAME
 160   --disable-bsfs           disable all bitstream filters
 161   --enable-protocol=NAME   enable protocol NAME
 162   --disable-protocol=NAME  disable protocol NAME
 163   --disable-protocols      disable all protocols
 164   --enable-indev=NAME      enable input device NAME
 165   --disable-indev=NAME     disable input device NAME
 166   --disable-indevs         disable input devices
 167   --enable-outdev=NAME     enable output device NAME
 168   --disable-outdev=NAME    disable output device NAME
 169   --disable-outdevs        disable output devices
 170   --disable-devices        disable all devices
 171   --enable-filter=NAME     enable filter NAME
 172   --disable-filter=NAME    disable filter NAME
 173   --disable-filters        disable all filters
 174
 175 External library support:
 176
 177   Using any of the following switches will allow Libav to link to the
 178   corresponding external library. All the components depending on that library
 179   will become enabled, if all their other dependencies are met and they are not
 180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 181   libwavpack and allow the libwavpack encoder to be built, unless it is
 182   specifically disabled with --disable-encoder=libwavpack.
 183
 184   Note that only the system libraries are auto-detected. All the other external
 185   libraries must be explicitly enabled.
 186
 187   Also note that the following help text describes the purpose of the libraries
 188   themselves, not all their features will necessarily be usable by Libav.
 189
 190   --enable-avisynth          video frameserver
 191   --enable-avxsynth          Linux version of AviSynth
 192   --enable-bzlib             bzip2 compression [autodetect]
 193   --enable-frei0r            video filtering plugins
 194   --enable-gnutls            crypto
 195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
 196   --enable-libcdio           audio CD input
 197   --enable-libdc1394         IEEE 1394/Firewire camera input
 198   --enable-libdcadec         DCA audio decoding
 199   --enable-libfaac           AAC audio encoding
 200   --enable-libfdk-aac        AAC audio encoding/decoding
 201   --enable-libfontconfig     font configuration and management
 202   --enable-libfreetype       font rendering
 203   --enable-libgsm            GSM audio encoding/decoding
 204   --enable-libhdcd           HDCD decoding filter
 205   --enable-libilbc           ILBC audio encoding/decoding
 206   --enable-libjack           JACK audio sound server
 207   --enable-libkvazaar        HEVC video encoding
 208   --enable-libmp3lame        MP3 audio encoding
 209   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
 210   --enable-libopencore-amrwb AMR-WB audio decoding
 211   --enable-libopencv         computer vision
 212   --enable-libopenh264       H.264 video encoding/decoding
 213   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
 214   --enable-libopus           Opus audio encoding/decoding
 215   --enable-libpulse          Pulseaudio sound server
 216   --enable-librtmp           RTMP streaming
 217   --enable-libschroedinger   Dirac video encoding/decoding
 218   --enable-libsnappy         snappy compression
 219   --enable-libspeex          Speex audio encoding/decoding
 220   --enable-libtheora         Theora video encoding/decoding
 221   --enable-libtwolame        MP2 audio encoding
 222   --enable-libvo-aacenc      AAC audio encoding
 223   --enable-libvo-amrwbenc    AMR-WB audio encoding
 224   --enable-libvorbis         Vorbis audio encoding/decoding
 225   --enable-libvpx            VP* video encoding/decoding
 226   --enable-libwavpack        Wavpack audio encoding/decoding
 227   --enable-libwebp           WebP image encoding/decoding
 228   --enable-libx264           H.264 video encoding
 229   --enable-libx265           HEVC video encoding
 230   --enable-libxavs           Chinese AVS video encoding
 231   --enable-libxcb            X window system protocol communication
 232   --enable-libxcb-shm        X11 shm communication [auto]
 233   --enable-libxcb-xfixes     X11 mouse rendering [auto]
 234   --enable-libxvid           MPEG-4 ASP video encoding
 235   --enable-openssl           crypto
 236   --enable-zlib              compression [autodetect]
 237
 238   The following libraries provide various hardware acceleration features:
 239   --enable-cuda    Nvidia CUDA (dynamically linked)
 240   --enable-cuvid   Nvidia CUVID video decode acceleration
 241   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
 242   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
 243   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
 244   --enable-libnpp  Nvidia CUDA processing
 245   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
 246   --enable-nvenc   Nvidia video encoding
 247   --enable-omx     OpenMAX IL
 248   --enable-omx-rpi OpenMAX IL for Raspberry Pi
 249   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
 250   --enable-vda     Apple Video Decode Acceleration [auto]
 251   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
 252
 253 Toolchain options:
 254   --arch=ARCH              select architecture [$arch]
 255   --cpu=CPU                select the minimum required CPU (affects
 256                            instruction selection, may crash on older CPUs)
 257   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 258   --enable-cross-compile   assume a cross-compiler is used
 259   --sysroot=PATH           root of cross-build tree
 260   --sysinclude=PATH        location of cross-build system headers
 261   --target-os=OS           compiler targets OS [$target_os]
 262   --target-exec=CMD        command to run executables on target
 263   --target-path=DIR        path to view of build directory on target
 264   --target-samples=DIR     path to samples directory on target
 265   --toolchain=NAME         set tool defaults according to NAME
 266   --nm=NM                  use nm tool
 267   --ar=AR                  use archive tool AR [$ar_default]
 268   --as=AS                  use assembler AS [$as_default]
 269   --cc=CC                  use C compiler CC [$cc_default]
 270   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 271   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 272   --ld=LD                  use linker LD
 273   --x86asmexe=X86ASM       use x86 assembler X86ASM
 274   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 275   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 276   --host-cc=HOSTCC         use host C compiler HOSTCC
 277   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 278   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 279   --host-ld=HOSTLD         use host linker HOSTLD
 280   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 281   --host-libs=HLIBS        use libs HLIBS when linking for host
 282   --host-os=OS             compiler host OS [$target_os]
 283   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 284   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 285   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 286   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 287   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 288   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 289   --extra-version=STRING   version string suffix []
 290   --optflags=OPTFLAGS      override optimization-related compiler flags
 291   --enable-pic             build position-independent code
 292   --enable-thumb           compile for Thumb instruction set
 293   --enable-lto             use link-time optimization
 294   --env="ENV=override"     override the environment variables
 295
 296 Advanced options (experts only):
 297   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 298   --custom-allocator=NAME  use a supported custom allocator
 299   --disable-symver         disable symbol versioning
 300   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 301   --disable-safe-bitstream-reader
 302                            disable buffer boundary checking in bitreaders
 303                            (faster, but may crash)
 304   --enable-sram            allow use of on-chip SRAM
 305
 306 Optimization options (experts only):
 307   --disable-asm            disable all assembly optimizations
 308   --disable-altivec        disable AltiVec optimizations
 309   --disable-vsx            disable VSX optimizations
 310   --disable-power8         disable POWER8 optimizations
 311   --disable-amd3dnow       disable 3DNow! optimizations
 312   --disable-amd3dnowext    disable 3DNow! extended optimizations
 313   --disable-mmx            disable MMX optimizations
 314   --disable-mmxext         disable MMXEXT optimizations
 315   --disable-sse            disable SSE optimizations
 316   --disable-sse2           disable SSE2 optimizations
 317   --disable-sse3           disable SSE3 optimizations
 318   --disable-ssse3          disable SSSE3 optimizations
 319   --disable-sse4           disable SSE4 optimizations
 320   --disable-sse42          disable SSE4.2 optimizations
 321   --disable-avx            disable AVX optimizations
 322   --disable-xop            disable XOP optimizations
 323   --disable-fma3           disable FMA3 optimizations
 324   --disable-fma4           disable FMA4 optimizations
 325   --disable-avx2           disable AVX2 optimizations
 326   --disable-armv5te        disable armv5te optimizations
 327   --disable-armv6          disable armv6 optimizations
 328   --disable-armv6t2        disable armv6t2 optimizations
 329   --disable-vfp            disable VFP optimizations
 330   --disable-neon           disable NEON optimizations
 331   --disable-inline-asm     disable use of inline assembly
 332   --disable-x86asm         disable use of standalone x86 assembly
 333
 334 Developer options (useful when working on Libav itself):
 335   --disable-debug          disable debugging symbols
 336   --enable-debug=LEVEL     set the debug level [$debuglevel]
 337   --disable-optimizations  disable compiler optimizations
 338   --enable-extra-warnings  enable more compiler warnings
 339   --samples=PATH           location of test samples for FATE, if not set use
 340                            \$LIBAV_SAMPLES at make invocation time.
 341   --enable-neon-clobber-test check NEON registers for clobbering (should be
 342                            used only for debugging purposes)
 343   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 344                            should be used only for debugging purposes)
 345   --enable-random          randomly enable/disable components
 346   --disable-random
 347   --enable-random=LIST     randomly enable/disable specific components or
 348   --disable-random=LIST    component groups. LIST is a comma-separated list
 349                            of NAME[:PROB] entries where NAME is a component
 350                            (group) and PROB the probability associated with
 351                            NAME (default 0.5).
 352   --random-seed=VALUE      seed value for --enable/disable-random
 353   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 354                            (only applies to --disable-optimizations builds)
 355   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 356                            in the name) of tests whose result is ignored
 357
 358 NOTE: Object files are built at the place where configure is launched.
 359 EOF
 360   exit 0
 361 }
 362
 363 quotes='""'
 364
 365 log(){
 366     echo "$@" >> $logfile
 367 }
 368
 369 log_file(){
 370     log BEGIN $1
 371     i=1
 372     while read line; do
 373         printf '%5s   %s\n' "${i}" "${line}"
 374         i=$(($i+1))
 375     done < $1 >> $logfile
 376     log END $1
 377 }
 378
 379 echolog(){
 380     log "$@"
 381     echo "$@"
 382 }
 383
 384 warn(){
 385     log "WARNING: $*"
 386     WARNINGS="${WARNINGS}WARNING: $*\n"
 387 }
 388
 389 die(){
 390     echolog "$@"
 391     cat <<EOF
 392
 393 If you think configure made a mistake, make sure you are using the latest
 394 version from Git.  If the latest version fails, report the problem to the
 395 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 396 EOF
 397     if disabled logging; then
 398         cat <<EOF
 399 Rerun configure with logging enabled (do not use --disable-logging), and
 400 include the log this produces with your report.
 401 EOF
 402     else
 403         cat <<EOF
 404 Include the log file "$logfile" produced by configure as this will help
 405 solving the problem.
 406 EOF
 407     fi
 408     exit 1
 409 }
 410
 411 # Avoid locale weirdness, besides we really just want to translate ASCII.
 412 toupper(){
 413     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 414 }
 415
 416 tolower(){
 417     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 418 }
 419
 420 c_escape(){
 421     echo "$*" | sed 's/["\\]/\\\0/g'
 422 }
 423
 424 sh_quote(){
 425     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 426     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 427     echo "$v"
 428 }
 429
 430 cleanws(){
 431     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 432 }
 433
 434 filter(){
 435     pat=$1
 436     shift
 437     for v; do
 438         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 439     done
 440 }
 441
 442 filter_out(){
 443     pat=$1
 444     shift
 445     for v; do
 446         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 447     done
 448 }
 449
 450 map(){
 451     m=$1
 452     shift
 453     for v; do eval $m; done
 454 }
 455
 456 add_suffix(){
 457     suffix=$1
 458     shift
 459     for v; do echo ${v}${suffix}; done
 460 }
 461
 462 set_all(){
 463     value=$1
 464     shift
 465     for var in $*; do
 466         eval $var=$value
 467     done
 468 }
 469
 470 set_weak(){
 471     value=$1
 472     shift
 473     for var; do
 474         eval : \${$var:=$value}
 475     done
 476 }
 477
 478 sanitize_var_name(){
 479     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 480 }
 481
 482 set_sanitized(){
 483     var=$1
 484     shift
 485     eval $(sanitize_var_name "$var")='$*'
 486 }
 487
 488 get_sanitized(){
 489     eval echo \$$(sanitize_var_name "$1")
 490 }
 491
 492 pushvar(){
 493     for pvar in $*; do
 494         eval level=\${${pvar}_level:=0}
 495         eval ${pvar}_${level}="\$$pvar"
 496         eval ${pvar}_level=$(($level+1))
 497     done
 498 }
 499
 500 popvar(){
 501     for pvar in $*; do
 502         eval level=\${${pvar}_level:-0}
 503         test $level = 0 && continue
 504         eval level=$(($level-1))
 505         eval $pvar="\${${pvar}_${level}}"
 506         eval ${pvar}_level=$level
 507         eval unset ${pvar}_${level}
 508     done
 509 }
 510
 511 enable(){
 512     set_all yes $*
 513 }
 514
 515 disable(){
 516     set_all no $*
 517 }
 518
 519 enable_weak(){
 520     set_weak yes $*
 521 }
 522
 523 disable_weak(){
 524     set_weak no $*
 525 }
 526
 527 enable_sanitized(){
 528     for var; do
 529         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 530     done
 531 }
 532
 533 disable_sanitized(){
 534     for var; do
 535         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 536     done
 537 }
 538
 539 do_enable_deep(){
 540     for var; do
 541         enabled $var && continue
 542         eval sel="\$${var}_select"
 543         eval sgs="\$${var}_suggest"
 544         pushvar var sgs
 545         enable_deep $sel
 546         popvar sgs
 547         enable_deep_weak $sgs
 548         popvar var
 549     done
 550 }
 551
 552 enable_deep(){
 553     do_enable_deep $*
 554     enable $*
 555 }
 556
 557 enable_deep_weak(){
 558     for var; do
 559         disabled $var && continue
 560         pushvar var
 561         do_enable_deep $var
 562         popvar var
 563         enable_weak $var
 564     done
 565 }
 566
 567 enabled(){
 568     test "${1#!}" = "$1" && op== || op=!=
 569     eval test "x\$${1#!}" $op "xyes"
 570 }
 571
 572 disabled(){
 573     test "${1#!}" = "$1" && op== || op=!=
 574     eval test "x\$${1#!}" $op "xno"
 575 }
 576
 577 enabled_all(){
 578     for opt; do
 579         enabled $opt || return 1
 580     done
 581 }
 582
 583 disabled_all(){
 584     for opt; do
 585         disabled $opt || return 1
 586     done
 587 }
 588
 589 enabled_any(){
 590     for opt; do
 591         enabled $opt && return 0
 592     done
 593 }
 594
 595 disabled_any(){
 596     for opt; do
 597         disabled $opt && return 0
 598     done
 599     return 1
 600 }
 601
 602 set_default(){
 603     for opt; do
 604         eval : \${$opt:=\$${opt}_default}
 605     done
 606 }
 607
 608 is_in(){
 609     value=$1
 610     shift
 611     for var in $*; do
 612         [ $var = $value ] && return 0
 613     done
 614     return 1
 615 }
 616
 617 check_deps(){
 618     for cfg; do
 619         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 620         disabled ${cfg}_checking && continue
 621         enable ${cfg}_checking
 622
 623         eval dep_all="\$${cfg}_deps"
 624         eval dep_any="\$${cfg}_deps_any"
 625         eval dep_con="\$${cfg}_conflict"
 626         eval dep_sel="\$${cfg}_select"
 627         eval dep_sgs="\$${cfg}_suggest"
 628         eval dep_ifa="\$${cfg}_if"
 629         eval dep_ifn="\$${cfg}_if_any"
 630
 631         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 632         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 633         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 634
 635         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 636         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 637         enabled_all  $dep_all || disable $cfg
 638         enabled_any  $dep_any || disable $cfg
 639         disabled_all $dep_con || disable $cfg
 640         disabled_any $dep_sel && disable $cfg
 641
 642         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 643
 644         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 645             # filter out library deps, these do not belong in extralibs
 646             is_in $dep $LIBRARY_LIST && continue
 647             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 648         done
 649
 650         disable ${cfg}_checking
 651     done
 652 }
 653
 654 print_config(){
 655     pfx=$1
 656     files=$2
 657     shift 2
 658     map 'eval echo "$v \${$v:-no}"' "$@" |
 659     awk "BEGIN { split(\"$files\", files) }
 660         {
 661             c = \"$pfx\" toupper(\$1);
 662             v = \$2;
 663             sub(/yes/, 1, v);
 664             sub(/no/,  0, v);
 665             for (f in files) {
 666                 file = files[f];
 667                 if (file ~ /\\.h\$/) {
 668                     printf(\"#define %s %d\\n\", c, v) >>file;
 669                 } else if (file ~ /\\.asm\$/) {
 670                     printf(\"%%define %s %d\\n\", c, v) >>file;
 671                 } else if (file ~ /\\.mak\$/) {
 672                     n = -v ? \"\" : \"!\";
 673                     printf(\"%s%s=yes\\n\", n, c) >>file;
 674                 }
 675             }
 676         }"
 677 }
 678
 679 print_enabled(){
 680     suf=$1
 681     shift
 682     for v; do
 683         enabled $v && printf "%s\n" ${v%$suf}
 684     done
 685 }
 686
 687 append(){
 688     var=$1
 689     shift
 690     eval "$var=\"\$$var $*\""
 691 }
 692
 693 prepend(){
 694     var=$1
 695     shift
 696     eval "$var=\"$* \$$var\""
 697 }
 698
 699 unique(){
 700     var=$1
 701     uniq_list=""
 702     for tok in $(eval echo \$$var); do
 703         uniq_list="$(filter_out $tok $uniq_list) $tok"
 704     done
 705     eval "$var=\"${uniq_list}\""
 706 }
 707
 708 resolve(){
 709     var=$1
 710     tmpvar=
 711     for entry in $(eval echo \$$var); do
 712         tmpvar="$tmpvar $(eval echo \$${entry})"
 713     done
 714     eval "$var=\"${tmpvar}\""
 715 }
 716
 717 add_cppflags(){
 718     append CPPFLAGS "$@"
 719 }
 720
 721 add_cflags(){
 722     append CFLAGS $($cflags_filter "$@")
 723 }
 724
 725 add_cflags_headers(){
 726     append CFLAGS_HEADERS $($cflags_filter "$@")
 727 }
 728
 729 add_asflags(){
 730     append ASFLAGS $($asflags_filter "$@")
 731 }
 732
 733 add_objcflags(){
 734     append OBJCFLAGS $($objcflags_filter "$@")
 735 }
 736
 737 add_ldflags(){
 738     append LDFLAGS $($ldflags_filter "$@")
 739 }
 740
 741 add_ldexeflags(){
 742     append LDEXEFLAGS $($ldflags_filter "$@")
 743 }
 744
 745 add_ldsoflags(){
 746     append LDSOFLAGS $($ldflags_filter "$@")
 747 }
 748
 749 add_stripflags(){
 750     append STRIPFLAGS "$@"
 751 }
 752
 753 add_extralibs(){
 754     prepend extralibs $($ldflags_filter "$@")
 755 }
 756
 757 add_host_cppflags(){
 758     append host_cppflags "$@"
 759 }
 760
 761 add_host_cflags(){
 762     append host_cflags $($host_cflags_filter "$@")
 763 }
 764
 765 add_host_ldflags(){
 766     append host_ldflags $($host_ldflags_filter "$@")
 767 }
 768
 769 add_compat(){
 770     append compat_objs $1
 771     shift
 772     map 'add_cppflags -D$v' "$@"
 773 }
 774
 775 check_cmd(){
 776     log "$@"
 777     "$@" >> $logfile 2>&1
 778 }
 779
 780 cc_o(){
 781     eval printf '%s\\n' $CC_O
 782 }
 783
 784 cc_e(){
 785     eval printf '%s\\n' $CC_E
 786 }
 787
 788 check_cc(){
 789     log check_cc "$@"
 790     cat > $TMPC
 791     log_file $TMPC
 792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 793 }
 794
 795 check_objcc(){
 796     log check_objcc "$@"
 797     cat > $TMPC
 798     log_file $TMPC
 799     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
 800 }
 801
 802 check_cpp(){
 803     log check_cpp "$@"
 804     cat > $TMPC
 805     log_file $TMPC
 806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 807 }
 808
 809 as_o(){
 810     eval printf '%s\\n' $AS_O
 811 }
 812
 813 check_as(){
 814     log check_as "$@"
 815     cat > $TMPS
 816     log_file $TMPS
 817     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 818 }
 819
 820 check_inline_asm(){
 821     log check_inline_asm "$@"
 822     name="$1"
 823     code="$2"
 824     shift 2
 825     disable $name
 826     check_cc "$@" <<EOF && enable $name
 827 void foo(void){ __asm__ volatile($code); }
 828 EOF
 829 }
 830
 831 check_insn(){
 832     log check_insn "$@"
 833     check_inline_asm ${1}_inline "\"$2\""
 834     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 835 }
 836
 837 check_x86asm(){
 838     log check_x86asm "$@"
 839     echo "$1" > $TMPS
 840     log_file $TMPS
 841     shift 1
 842     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
 843 }
 844
 845 ld_o(){
 846     eval printf '%s\\n' $LD_O
 847 }
 848
 849 check_ld(){
 850     log check_ld "$@"
 851     flags=$(filter_out '-l*' "$@")
 852     libs=$(filter '-l*' "$@")
 853     check_cc $($cflags_filter $flags) || return
 854     flags=$($ldflags_filter $flags)
 855     libs=$($ldflags_filter $libs)
 856     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 857 }
 858
 859 print_include(){
 860     hdr=$1
 861     test "${hdr%.h}" = "${hdr}" &&
 862         echo "#include $hdr"    ||
 863         echo "#include <$hdr>"
 864 }
 865
 866 check_code(){
 867     log check_code "$@"
 868     check=$1
 869     headers=$2
 870     code=$3
 871     shift 3
 872     {
 873         for hdr in $headers; do
 874             print_include $hdr
 875         done
 876         echo "int main(void) { $code; return 0; }"
 877     } | check_$check "$@"
 878 }
 879
 880 check_cppflags(){
 881     log check_cppflags "$@"
 882     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
 883 #include <stdlib.h>;
 884 EOF
 885 }
 886
 887 test_cflags(){
 888     log test_cflags "$@"
 889     set -- $($cflags_filter "$@")
 890     check_cc "$@" <<EOF
 891 int x;
 892 EOF
 893 }
 894
 895 check_cflags(){
 896     log check_cflags "$@"
 897     test_cflags "$@" && add_cflags "$@"
 898 }
 899
 900 test_objcflags(){
 901     log test_objcflags "$@"
 902     set -- $($objcflags_filter "$@")
 903     check_objcc "$@" <<EOF
 904 int x;
 905 EOF
 906 }
 907
 908 check_objcflags(){
 909     log check_objcflags "$@"
 910     test_objcflags "$@" && add_objcflags "$@"
 911 }
 912
 913 test_ldflags(){
 914     log test_ldflags "$@"
 915     check_ld "$@" <<EOF
 916 int main(void){ return 0; }
 917 EOF
 918 }
 919
 920 check_ldflags(){
 921     log check_ldflags "$@"
 922     test_ldflags "$@" && add_ldflags "$@"
 923 }
 924
 925 test_stripflags(){
 926     log test_stripflags "$@"
 927     # call check_cc to get a fresh TMPO
 928     check_cc <<EOF
 929 int main(void) { return 0; }
 930 EOF
 931     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 932 }
 933
 934 check_stripflags(){
 935     log check_stripflags "$@"
 936     test_stripflags "$@" && add_stripflags "$@"
 937 }
 938
 939 check_header(){
 940     log check_header "$@"
 941     header=$1
 942     shift
 943     disable_sanitized $header
 944     check_cpp "$@" <<EOF && enable_sanitized $header
 945 #include <$header>
 946 int x;
 947 EOF
 948 }
 949
 950 check_func(){
 951     log check_func "$@"
 952     func=$1
 953     shift
 954     disable $func
 955     check_ld "$@" <<EOF && enable $func
 956 extern int $func();
 957 int main(void){ $func(); }
 958 EOF
 959 }
 960
 961 check_mathfunc(){
 962     log check_mathfunc "$@"
 963     func=$1
 964     narg=$2
 965     shift 2
 966     test $narg = 2 && args="f, g" || args="f"
 967     disable $func
 968     check_ld "$@" <<EOF && enable $func
 969 #include <math.h>
 970 float foo(float f, float g) { return $func($args); }
 971 int main(void){ return 0; }
 972 EOF
 973 }
 974
 975 check_func_headers(){
 976     log check_func_headers "$@"
 977     headers=$1
 978     funcs=$2
 979     shift 2
 980     {
 981         for hdr in $headers; do
 982             print_include $hdr
 983         done
 984         for func in $funcs; do
 985             echo "long check_$func(void) { return (long) $func; }"
 986         done
 987         echo "int main(void) { return 0; }"
 988     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
 989 }
 990
 991 check_cpp_condition(){
 992     log check_cpp_condition "$@"
 993     header=$1
 994     condition=$2
 995     shift 2
 996     check_cpp "$@" <<EOF
 997 #include <$header>
 998 #if !($condition)
 999 #error "unsatisfied condition: $condition"
1000 #endif
1001 EOF
1002 }
1003
1004 test_cflags_cpp(){
1005     log test_cflags_cpp "$@"
1006     flags=$1
1007     condition=$2
1008     shift 2
1009     set -- $($cflags_filter "$flags")
1010     check_cpp "$@" <<EOF
1011 #if !($condition)
1012 #error "unsatisfied condition: $condition"
1013 #endif
1014 EOF
1015 }
1016
1017 check_lib(){
1018     log check_lib "$@"
1019     name="$1"
1020     headers="$2"
1021     funcs="$3"
1022     shift 3
1023     disable $name
1024     check_func_headers "$headers" "$funcs" "$@" &&
1025         enable $name && eval ${name}_extralibs="\$@"
1026 }
1027
1028 check_pkg_config(){
1029     log check_pkg_config "$@"
1030     name="$1"
1031     pkg_version="$2"
1032     pkg="${2%% *}"
1033     headers="$3"
1034     funcs="$4"
1035     shift 4
1036     disable $name
1037     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1038     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1039     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1040     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1041         enable $name &&
1042         add_cflags    "$pkg_cflags" &&
1043         eval $(sanitize_var_name ${name}_extralibs)="\$pkg_libs"
1044 }
1045
1046 check_exec(){
1047     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1048 }
1049
1050 check_exec_crash(){
1051     log check_exec_crash "$@"
1052     code=$(cat)
1053
1054     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1055     # are safe but may not be available everywhere.  Thus we use
1056     # raise(SIGTERM) instead.  The check is run in a subshell so we
1057     # can redirect the "Terminated" message from the shell.  SIGBUS
1058     # is not defined by standard C so it is used conditionally.
1059
1060     (check_exec "$@") >> $logfile 2>&1 <<EOF
1061 #include <signal.h>
1062 static void sighandler(int sig){
1063     raise(SIGTERM);
1064 }
1065 int foo(void){
1066     $code
1067 }
1068 int (*func_ptr)(void) = foo;
1069 int main(void){
1070     signal(SIGILL, sighandler);
1071     signal(SIGFPE, sighandler);
1072     signal(SIGSEGV, sighandler);
1073 #ifdef SIGBUS
1074     signal(SIGBUS, sighandler);
1075 #endif
1076     return func_ptr();
1077 }
1078 EOF
1079 }
1080
1081 check_type(){
1082     log check_type "$@"
1083     headers=$1
1084     type=$2
1085     shift 2
1086     disable_sanitized "$type"
1087     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1088 }
1089
1090 check_struct(){
1091     log check_struct "$@"
1092     headers=$1
1093     struct=$2
1094     member=$3
1095     shift 3
1096     disable_sanitized "${struct}_${member}"
1097     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1098         enable_sanitized "${struct}_${member}"
1099 }
1100
1101 check_builtin(){
1102     log check_builtin "$@"
1103     name=$1
1104     headers=$2
1105     builtin=$3
1106     shift 3
1107     disable "$name"
1108     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1109 }
1110
1111 check_compile_assert(){
1112     log check_compile_assert "$@"
1113     name=$1
1114     headers=$2
1115     condition=$3
1116     shift 3
1117     disable "$name"
1118     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1119 }
1120
1121 require(){
1122     log require "$@"
1123     name_version="$1"
1124     name="${1%% *}"
1125     headers="$2"
1126     func="$3"
1127     shift 3
1128     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1129 }
1130
1131 require_header(){
1132     log require "$@"
1133     header="$1"
1134     shift
1135     check_header "$header" "$@" || die "ERROR: $header not found"
1136 }
1137
1138 require_cpp_condition(){
1139     log require "$@"
1140     header="$1"
1141     condition="$2"
1142     shift 2
1143     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1144 }
1145
1146 require_pkg_config(){
1147     log require_pkg_config "$@"
1148     pkg_version="$2"
1149     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1150 }
1151
1152 hostcc_e(){
1153     eval printf '%s\\n' $HOSTCC_E
1154 }
1155
1156 hostcc_o(){
1157     eval printf '%s\\n' $HOSTCC_O
1158 }
1159
1160 check_host_cc(){
1161     log check_host_cc "$@"
1162     cat > $TMPC
1163     log_file $TMPC
1164     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1165 }
1166
1167 check_host_cpp(){
1168     log check_host_cpp "$@"
1169     cat > $TMPC
1170     log_file $TMPC
1171     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1172 }
1173
1174 check_host_cppflags(){
1175     log check_host_cppflags "$@"
1176     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1177 #include <stdlib.h>;
1178 EOF
1179 }
1180
1181 check_host_cflags(){
1182     log check_host_cflags "$@"
1183     set -- $($host_cflags_filter "$@")
1184     check_host_cc "$@" <<EOF && append host_cflags "$@"
1185 int x;
1186 EOF
1187 }
1188
1189 check_host_cpp_condition(){
1190     log check_host_cpp_condition "$@"
1191     header=$1
1192     condition=$2
1193     shift 2
1194     check_host_cpp "$@" <<EOF
1195 #include <$header>
1196 #if !($condition)
1197 #error "unsatisfied condition: $condition"
1198 #endif
1199 EOF
1200 }
1201
1202 apply(){
1203     file=$1
1204     shift
1205     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1206 }
1207
1208 cp_if_changed(){
1209     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1210     mkdir -p "$(dirname $2)"
1211     cp -f "$1" "$2"
1212 }
1213
1214 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1215 # system-dependent things.
1216
1217 AVCODEC_COMPONENTS="
1218     bsfs
1219     decoders
1220     encoders
1221     hwaccels
1222     parsers
1223 "
1224
1225 AVDEVICE_COMPONENTS="
1226     indevs
1227     outdevs
1228 "
1229 AVFILTER_COMPONENTS="
1230     filters
1231 "
1232 AVFORMAT_COMPONENTS="
1233     demuxers
1234     muxers
1235     protocols
1236 "
1237
1238 AVRESAMPLE_COMPONENTS=""
1239 AVUTIL_COMPONENTS=""
1240
1241 COMPONENT_LIST="
1242     $AVCODEC_COMPONENTS
1243     $AVDEVICE_COMPONENTS
1244     $AVFILTER_COMPONENTS
1245     $AVFORMAT_COMPONENTS
1246     $AVRESAMPLE_COMPONENTS
1247     $AVUTIL_COMPONENTS
1248 "
1249
1250 EXAMPLE_LIST="
1251     decode_audio_example
1252     decode_video_example
1253     encode_audio_example
1254     encode_video_example
1255     filter_audio_example
1256     metadata_example
1257     output_example
1258     qsvdec_example
1259     transcode_aac_example
1260 "
1261
1262 # catchall list of things that require external libs to link
1263 EXTRALIBS_LIST="
1264     cpu_init
1265     cws2fws
1266 "
1267
1268 HWACCEL_LIBRARY_NONFREE_LIST="
1269     cuda
1270     cuvid
1271     libnpp
1272 "
1273 HWACCEL_LIBRARY_LIST="
1274     $HWACCEL_LIBRARY_NONFREE_LIST
1275     d3d11va
1276     dxva2
1277     libmfx
1278     mmal
1279     nvenc
1280     omx
1281     vaapi
1282     vda
1283     vdpau
1284 "
1285
1286 EXTERNAL_LIBRARY_GPL_LIST="
1287     libcdio
1288     libx264
1289     libx265
1290     libxavs
1291     libxvid
1292 "
1293
1294 EXTERNAL_LIBRARY_NONFREE_LIST="
1295     libfaac
1296     libfdk_aac
1297     openssl
1298 "
1299
1300 EXTERNAL_LIBRARY_VERSION3_LIST="
1301     libopencore_amrnb
1302     libopencore_amrwb
1303     libvo_aacenc
1304     libvo_amrwbenc
1305 "
1306
1307 EXTERNAL_LIBRARY_LIST="
1308     $EXTERNAL_LIBRARY_GPL_LIST
1309     $EXTERNAL_LIBRARY_NONFREE_LIST
1310     $EXTERNAL_LIBRARY_VERSION3_LIST
1311     avisynth
1312     avxsynth
1313     frei0r
1314     gnutls
1315     libbs2b
1316     libdc1394
1317     libdcadec
1318     libfontconfig
1319     libfreetype
1320     libgsm
1321     libhdcd
1322     libilbc
1323     libjack
1324     libkvazaar
1325     libmp3lame
1326     libopencv
1327     libopenh264
1328     libopenjpeg
1329     libopus
1330     libpulse
1331     librtmp
1332     libschroedinger
1333     libsnappy
1334     libspeex
1335     libtheora
1336     libtwolame
1337     libvorbis
1338     libvpx
1339     libwavpack
1340     libwebp
1341     libxcb
1342     libxcb_shm
1343     libxcb_xfixes
1344 "
1345
1346 SYSTEM_LIBRARY_LIST="
1347     bzlib
1348     zlib
1349 "
1350
1351 FEATURE_LIST="
1352     gray
1353     hardcoded_tables
1354     omx_rpi
1355     runtime_cpudetect
1356     safe_bitstream_reader
1357     shared
1358     small
1359     sram
1360     static
1361     swscale_alpha
1362 "
1363
1364 LIBRARY_LIST="
1365     avcodec
1366     avdevice
1367     avfilter
1368     avformat
1369     avresample
1370     avutil
1371     swscale
1372 "
1373
1374 LICENSE_LIST="
1375     gpl
1376     nonfree
1377     version3
1378 "
1379
1380 PROGRAM_LIST="
1381     avconv
1382     avplay
1383     avprobe
1384 "
1385
1386 SUBSYSTEM_LIST="
1387     dct
1388     doc
1389     error_resilience
1390     faan
1391     fft
1392     lsp
1393     lzo
1394     mdct
1395     network
1396     rdft
1397 "
1398
1399 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1400 CONFIG_LIST="
1401     $EXAMPLE_LIST
1402     $EXTERNAL_LIBRARY_LIST
1403     $HWACCEL_LIBRARY_LIST
1404     $FEATURE_LIST
1405     $LICENSE_LIST
1406     $LIBRARY_LIST
1407     $PROGRAM_LIST
1408     $SUBSYSTEM_LIST
1409     $SYSTEM_LIBRARY_LIST
1410     neon_clobber_test
1411     pic
1412     pod2man
1413     texi2html
1414     thumb
1415     valgrind_backtrace
1416     xmm_clobber_test
1417     $COMPONENT_LIST
1418 "
1419
1420 THREADS_LIST="
1421     pthreads
1422     w32threads
1423 "
1424
1425 ATOMICS_LIST="
1426     atomics_gcc
1427     atomics_suncc
1428     atomics_win32
1429 "
1430
1431 ARCH_LIST="
1432     aarch64
1433     alpha
1434     arm
1435     avr32
1436     avr32_ap
1437     avr32_uc
1438     bfin
1439     ia64
1440     m68k
1441     mips
1442     mips64
1443     parisc
1444     ppc
1445     ppc64
1446     s390
1447     sh4
1448     sparc
1449     sparc64
1450     tilegx
1451     tilepro
1452     tomi
1453     x86
1454     x86_32
1455     x86_64
1456 "
1457
1458 ARCH_EXT_LIST_ARM="
1459     armv5te
1460     armv6
1461     armv6t2
1462     armv8
1463     neon
1464     vfp
1465     vfpv3
1466 "
1467
1468 ARCH_EXT_LIST_X86_SIMD="
1469     amd3dnow
1470     amd3dnowext
1471     avx
1472     avx2
1473     fma3
1474     fma4
1475     mmx
1476     mmxext
1477     sse
1478     sse2
1479     sse3
1480     sse4
1481     sse42
1482     ssse3
1483     xop
1484 "
1485
1486 ARCH_EXT_LIST_PPC="
1487     altivec
1488     dcbzl
1489     ldbrx
1490     power8
1491     ppc4xx
1492     vsx
1493 "
1494
1495 ARCH_EXT_LIST_X86="
1496     $ARCH_EXT_LIST_X86_SIMD
1497     cpunop
1498     i686
1499 "
1500
1501 ARCH_EXT_LIST_MIPS="
1502     loongson
1503     mips32r1
1504     mips64r1
1505     mips32r2
1506     mips64r2
1507     mips32r6
1508     mips64r6
1509 "
1510
1511 ARCH_EXT_LIST="
1512     $ARCH_EXT_LIST_ARM
1513     $ARCH_EXT_LIST_MIPS
1514     $ARCH_EXT_LIST_PPC
1515     $ARCH_EXT_LIST_X86
1516     vis
1517 "
1518
1519 ARCH_FEATURES="
1520     aligned_stack
1521     fast_64bit
1522     fast_clz
1523     fast_cmov
1524     local_aligned_8
1525     local_aligned_16
1526     local_aligned_32
1527     simd_align_16
1528     simd_align_32
1529 "
1530
1531 BUILTIN_LIST="
1532     atomic_cas_ptr
1533     machine_rw_barrier
1534     MemoryBarrier
1535     mm_empty
1536     rdtsc
1537     sem_timedwait
1538     sync_val_compare_and_swap
1539 "
1540 HAVE_LIST_CMDLINE="
1541     inline_asm
1542     symver
1543     x86asm
1544 "
1545
1546 HAVE_LIST_PUB="
1547     bigendian
1548     fast_unaligned
1549 "
1550
1551 HEADERS_LIST="
1552     AVFoundation_AVFoundation_h
1553     alsa_asoundlib_h
1554     arpa_inet_h
1555     cdio_paranoia_h
1556     cdio_paranoia_paranoia_h
1557     d3d11_h
1558     dispatch_dispatch_h
1559     dev_bktr_ioctl_bt848_h
1560     dev_bktr_ioctl_meteor_h
1561     dev_ic_bt8xx_h
1562     dev_video_bktr_ioctl_bt848_h
1563     dev_video_meteor_ioctl_meteor_h
1564     direct_h
1565     dlfcn_h
1566     dxgidebug_h
1567     dxva_h
1568     gsm_h
1569     io_h
1570     mach_mach_time_h
1571     machine_ioctl_bt848_h
1572     machine_ioctl_meteor_h
1573     malloc_h
1574     poll_h
1575     sndio_h
1576     soundcard_h
1577     stdatomic_h
1578     sys_mman_h
1579     sys_param_h
1580     sys_resource_h
1581     sys_select_h
1582     sys_soundcard_h
1583     sys_time_h
1584     sys_un_h
1585     sys_videoio_h
1586     unistd_h
1587     valgrind_valgrind_h
1588     windows_h
1589     winsock2_h
1590 "
1591
1592 INTRINSICS_LIST="
1593     intrinsics_neon
1594 "
1595
1596 MATH_FUNCS="
1597     atanf
1598     atan2f
1599     cbrtf
1600     cosf
1601     exp2
1602     exp2f
1603     expf
1604     isinf
1605     isnan
1606     ldexpf
1607     llrint
1608     llrintf
1609     log2
1610     log2f
1611     log10f
1612     lrint
1613     lrintf
1614     powf
1615     rint
1616     round
1617     roundf
1618     sinf
1619     trunc
1620     truncf
1621 "
1622
1623 SYSTEM_FUNCS="
1624     aligned_malloc
1625     clock_gettime
1626     closesocket
1627     CommandLineToArgvW
1628     CoTaskMemFree
1629     CryptGenRandom
1630     fcntl
1631     flt_lim
1632     fork
1633     getaddrinfo
1634     gethrtime
1635     getopt
1636     GetProcessAffinityMask
1637     GetProcessMemoryInfo
1638     GetProcessTimes
1639     getrusage
1640     GetSystemTimeAsFileTime
1641     gettimeofday
1642     gmtime_r
1643     inet_aton
1644     isatty
1645     LoadLibrary
1646     localtime_r
1647     mach_absolute_time
1648     MapViewOfFile
1649     memalign
1650     mkstemp
1651     mmap
1652     mprotect
1653     nanosleep
1654     posix_memalign
1655     sched_getaffinity
1656     SetConsoleTextAttribute
1657     setmode
1658     setrlimit
1659     Sleep
1660     strerror_r
1661     sysconf
1662     sysctl
1663     usleep
1664     VirtualAlloc
1665 "
1666
1667 TOOLCHAIN_FEATURES="
1668     as_arch_directive
1669     as_fpu_directive
1670     as_func
1671     as_object_arch
1672     asm_mod_q
1673     attribute_may_alias
1674     attribute_packed
1675     blocks_extension
1676     ebp_available
1677     ebx_available
1678     gnu_as
1679     ibm_asm
1680     inline_asm_labels
1681     pragma_deprecated
1682     symver_asm_label
1683     symver_gnu_asm
1684     vfp_args
1685     xform_asm
1686     xmm_clobbers
1687 "
1688
1689 TYPES_LIST="
1690     CONDITION_VARIABLE_Ptr
1691     CUVIDDECODECREATEINFO_bitDepthMinus8
1692     socklen_t
1693     struct_addrinfo
1694     struct_group_source_req
1695     struct_ip_mreq_source
1696     struct_ipv6_mreq
1697     struct_pollfd
1698     struct_rusage_ru_maxrss
1699     struct_sockaddr_in6
1700     struct_sockaddr_sa_len
1701     struct_sockaddr_storage
1702     struct_v4l2_frmivalenum_discrete
1703 "
1704
1705 HAVE_LIST="
1706     $ARCH_EXT_LIST
1707     $(add_suffix _external $ARCH_EXT_LIST)
1708     $(add_suffix _inline   $ARCH_EXT_LIST)
1709     $ARCH_FEATURES
1710     $BUILTIN_LIST
1711     $HAVE_LIST_CMDLINE
1712     $HAVE_LIST_PUB
1713     $HEADERS_LIST
1714     $INTRINSICS_LIST
1715     $MATH_FUNCS
1716     $SYSTEM_FUNCS
1717     $THREADS_LIST
1718     $TOOLCHAIN_FEATURES
1719     $TYPES_LIST
1720     dos_paths
1721     libc_msvcrt
1722     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1723     sdl
1724     section_data_rel_ro
1725     threads
1726     uwp
1727     vaapi_drm
1728     vaapi_x11
1729     vdpau_x11
1730 "
1731
1732 # options emitted with CONFIG_ prefix but not available on the command line
1733 CONFIG_EXTRA="
1734     aandcttables
1735     ac3dsp
1736     adts_header
1737     audio_frame_queue
1738     audiodsp
1739     blockdsp
1740     bswapdsp
1741     cabac
1742     dirac_parse
1743     dvprofile
1744     faandct
1745     faanidct
1746     fdctdsp
1747     flacdsp
1748     fmtconvert
1749     g722dsp
1750     gmp
1751     golomb
1752     gplv3
1753     h263dsp
1754     h264chroma
1755     h264dsp
1756     h264parse
1757     h264pred
1758     h264qpel
1759     hevc_ps
1760     hpeldsp
1761     huffman
1762     huffyuvdsp
1763     huffyuvencdsp
1764     idctdsp
1765     iirfilter
1766     imdct15
1767     intrax8
1768     iso_media
1769     ividsp
1770     jpegtables
1771     lgplv3
1772     libx262
1773     libxcb_shape
1774     lpc
1775     lzf
1776     me_cmp
1777     mpeg_er
1778     mpegaudio
1779     mpegaudiodsp
1780     mpegaudioheader
1781     mpegvideo
1782     mpegvideoenc
1783     mss34dsp
1784     pixblockdsp
1785     qpeldsp
1786     qsv
1787     qsvdec
1788     qsvenc
1789     rangecoder
1790     riffdec
1791     riffenc
1792     rtpdec
1793     rtpenc_chain
1794     rv34dsp
1795     sinewin
1796     snappy
1797     srtp
1798     startcode
1799     texturedsp
1800     texturedspenc
1801     tpeldsp
1802     vaapi_encode
1803     vc1dsp
1804     videodsp
1805     vp3dsp
1806     vp56dsp
1807     vp8dsp
1808     wma_freqs
1809     wmv2dsp
1810 "
1811
1812 CMDLINE_SELECT="
1813     $ARCH_EXT_LIST
1814     $CONFIG_LIST
1815     $HAVE_LIST_CMDLINE
1816     $THREADS_LIST
1817     asm
1818     cross_compile
1819     debug
1820     extra_warnings
1821     logging
1822     lto
1823     optimizations
1824     rpath
1825 "
1826
1827 PATHS_LIST="
1828     bindir
1829     datadir
1830     docdir
1831     incdir
1832     libdir
1833     mandir
1834     prefix
1835     shlibdir
1836 "
1837
1838 CMDLINE_SET="
1839     $PATHS_LIST
1840     ar
1841     arch
1842     as
1843     cc
1844     objcc
1845     cpu
1846     cross_prefix
1847     custom_allocator
1848     dep_cc
1849     env
1850     extra_version
1851     host_cc
1852     host_cflags
1853     host_extralibs
1854     host_ld
1855     host_ldflags
1856     host_os
1857     ignore_tests
1858     ld
1859     logfile
1860     malloc_prefix
1861     nm
1862     optflags
1863     pkg_config
1864     pkg_config_flags
1865     random_seed
1866     samples
1867     sysinclude
1868     sysroot
1869     target_exec
1870     target_os
1871     target_path
1872     target_samples
1873     toolchain
1874     x86asmexe
1875 "
1876
1877 CMDLINE_APPEND="
1878     extra_cflags
1879     extra_objcflags
1880     host_cppflags
1881 "
1882
1883 # code dependency declarations
1884
1885 # architecture extensions
1886
1887 armv5te_deps="arm"
1888 armv6_deps="arm"
1889 armv6t2_deps="arm"
1890 armv8_deps="aarch64"
1891 neon_deps_any="aarch64 arm"
1892 intrinsics_neon_deps="neon"
1893 vfp_deps_any="aarch64 arm"
1894 vfpv3_deps="vfp"
1895
1896 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1897
1898 altivec_deps="ppc"
1899 dcbzl_deps="ppc"
1900 ldbrx_deps="ppc"
1901 ppc4xx_deps="ppc"
1902 vsx_deps="altivec"
1903 power8_deps="vsx"
1904
1905 loongson_deps="mips"
1906 mips32r1_deps="mips32"
1907 mips32r2_deps="mips32"
1908 mips32r6_deps="mips32"
1909 mips64r1_deps="mips64"
1910 mips64r2_deps="mips64"
1911 mips64r6_deps="mips64"
1912
1913 vis_deps="sparc"
1914
1915 cpunop_deps="i686"
1916 x86_64_select="i686"
1917 x86_64_suggest="fast_cmov"
1918
1919 amd3dnow_deps="mmx"
1920 amd3dnowext_deps="amd3dnow"
1921 i686_deps="x86"
1922 mmx_deps="x86"
1923 mmxext_deps="mmx"
1924 sse_deps="mmxext"
1925 sse2_deps="sse"
1926 sse3_deps="sse2"
1927 ssse3_deps="sse3"
1928 sse4_deps="ssse3"
1929 sse42_deps="sse4"
1930 avx_deps="sse42"
1931 xop_deps="avx"
1932 fma3_deps="avx"
1933 fma4_deps="avx"
1934 avx2_deps="avx"
1935
1936 mmx_external_deps="x86asm"
1937 mmx_inline_deps="inline_asm x86"
1938 mmx_suggest="mmx_external mmx_inline"
1939
1940 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1941     eval dep=\$${ext}_deps
1942     eval ${ext}_external_deps='"${dep}_external"'
1943     eval ${ext}_inline_deps='"${dep}_inline"'
1944     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1945 done
1946
1947 aligned_stack_if_any="aarch64 ppc x86"
1948 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1949 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1950 fast_unaligned_if_any="aarch64 ppc x86"
1951 simd_align_16_if_any="altivec neon sse"
1952 simd_align_32_if_any="avx"
1953
1954 # system capabilities
1955 symver_if_any="symver_asm_label symver_gnu_asm"
1956 valgrind_backtrace_conflict="optimizations"
1957 valgrind_backtrace_deps="valgrind_valgrind_h"
1958
1959 # threading support
1960 atomics_gcc_if="sync_val_compare_and_swap"
1961 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1962 atomics_win32_if="MemoryBarrier"
1963 atomics_native_if_any="$ATOMICS_LIST"
1964 w32threads_deps="atomics_native"
1965 threads_if_any="$THREADS_LIST"
1966
1967 # subsystems
1968 dct_select="rdft"
1969 dirac_parse_select="golomb"
1970 error_resilience_select="me_cmp"
1971 faandct_deps="faan"
1972 faandct_select="fdctdsp"
1973 faanidct_deps="faan"
1974 faanidct_select="idctdsp"
1975 h264dsp_select="startcode"
1976 hevc_ps_select="golomb"
1977 intrax8_select="blockdsp idctdsp"
1978 mdct_select="fft"
1979 rdft_select="fft"
1980 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1981 mpeg_er_select="error_resilience"
1982 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1983 mpegaudiodsp_select="dct"
1984 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1985 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1986 vc1dsp_select="h264chroma qpeldsp startcode"
1987
1988 # decoders / encoders
1989 aac_decoder_select="adts_header imdct15 mdct sinewin"
1990 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1991 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1992 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1993 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1994 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1995 adpcm_g722_decoder_select="g722dsp"
1996 adpcm_g722_encoder_select="g722dsp"
1997 aic_decoder_select="golomb idctdsp"
1998 alac_encoder_select="lpc"
1999 als_decoder_select="bswapdsp"
2000 amrnb_decoder_select="lsp"
2001 amrwb_decoder_select="lsp"
2002 amv_decoder_select="sp5x_decoder"
2003 ape_decoder_select="bswapdsp"
2004 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2005 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2006 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2007 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2008 atrac1_decoder_select="mdct sinewin"
2009 atrac3_decoder_select="mdct"
2010 atrac3p_decoder_select="mdct sinewin"
2011 bink_decoder_select="blockdsp hpeldsp"
2012 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2013 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2014 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2015 clearvideo_decoder_select="idctdsp"
2016 cllc_decoder_select="bswapdsp"
2017 comfortnoise_encoder_select="lpc"
2018 cook_decoder_select="audiodsp mdct sinewin"
2019 cscd_decoder_select="lzo"
2020 cscd_decoder_suggest="zlib"
2021 dca_decoder_select="fmtconvert mdct"
2022 dds_decoder_select="texturedsp"
2023 dnxhd_decoder_select="blockdsp idctdsp"
2024 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2025 dvvideo_decoder_select="dvprofile idctdsp"
2026 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2027 dxa_decoder_deps="zlib"
2028 dxv_decoder_select="lzf texturedsp"
2029 eac3_decoder_select="ac3_decoder"
2030 eac3_encoder_select="ac3_encoder"
2031 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2032 eatgq_decoder_select="aandcttables idctdsp"
2033 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2034 exr_decoder_deps="zlib"
2035 ffv1_decoder_select="rangecoder"
2036 ffv1_encoder_select="rangecoder"
2037 ffvhuff_decoder_select="huffyuv_decoder"
2038 ffvhuff_encoder_select="huffyuv_encoder"
2039 fic_decoder_select="golomb"
2040 flac_decoder_select="flacdsp"
2041 flac_encoder_select="bswapdsp flacdsp lpc"
2042 flashsv_decoder_deps="zlib"
2043 flashsv_encoder_deps="zlib"
2044 flashsv2_decoder_deps="zlib"
2045 flv_decoder_select="h263_decoder"
2046 flv_encoder_select="h263_encoder"
2047 fourxm_decoder_select="blockdsp bswapdsp"
2048 fraps_decoder_select="bswapdsp huffman"
2049 g2m_decoder_deps="zlib"
2050 g2m_decoder_select="blockdsp idctdsp jpegtables"
2051 h261_decoder_select="mpeg_er mpegvideo"
2052 h261_encoder_select="aandcttables mpegvideoenc"
2053 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2054 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2055 h263i_decoder_select="h263_decoder"
2056 h263p_encoder_select="h263_encoder"
2057 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2058 h264_decoder_suggest="error_resilience"
2059 hap_decoder_select="snappy texturedsp"
2060 hap_encoder_deps="libsnappy"
2061 hap_encoder_select="texturedspenc"
2062 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2063 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2064 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2065 iac_decoder_select="imc_decoder"
2066 imc_decoder_select="bswapdsp fft mdct sinewin"
2067 indeo3_decoder_select="hpeldsp"
2068 indeo4_decoder_select="ividsp"
2069 indeo5_decoder_select="ividsp"
2070 interplay_video_decoder_select="hpeldsp"
2071 jpegls_decoder_select="mjpeg_decoder"
2072 jv_decoder_select="blockdsp"
2073 lagarith_decoder_select="huffyuvdsp"
2074 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2075 magicyuv_decoder_select="huffyuvdsp"
2076 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2077 metasound_decoder_select="lsp mdct sinewin"
2078 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2079 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2080 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2081 mjpegb_decoder_select="mjpeg_decoder"
2082 mlp_decoder_select="mlp_parser"
2083 motionpixels_decoder_select="bswapdsp"
2084 mp1_decoder_select="mpegaudio"
2085 mp1float_decoder_select="mpegaudio"
2086 mp2_decoder_select="mpegaudio"
2087 mp2float_decoder_select="mpegaudio"
2088 mp3_decoder_select="mpegaudio"
2089 mp3adu_decoder_select="mpegaudio"
2090 mp3adufloat_decoder_select="mpegaudio"
2091 mp3float_decoder_select="mpegaudio"
2092 mp3on4_decoder_select="mpegaudio"
2093 mp3on4float_decoder_select="mpegaudio"
2094 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2095 mpc8_decoder_select="mpegaudiodsp"
2096 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2097 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2098 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2099 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2100 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2101 mpeg4_encoder_select="h263_encoder"
2102 msa1_decoder_select="mss34dsp"
2103 msmpeg4v1_decoder_select="h263_decoder"
2104 msmpeg4v2_decoder_select="h263_decoder"
2105 msmpeg4v2_encoder_select="h263_encoder"
2106 msmpeg4v3_decoder_select="h263_decoder"
2107 msmpeg4v3_encoder_select="h263_encoder"
2108 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2109 mts2_decoder_select="mss34dsp"
2110 mxpeg_decoder_select="mjpeg_decoder"
2111 nellymoser_decoder_select="mdct sinewin"
2112 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2113 nuv_decoder_select="idctdsp lzo"
2114 on2avc_decoder_select="mdct"
2115 opus_decoder_deps="avresample"
2116 opus_decoder_select="imdct15"
2117 png_decoder_deps="zlib"
2118 png_encoder_deps="zlib"
2119 png_encoder_select="huffyuvencdsp"
2120 prores_decoder_select="idctdsp"
2121 prores_encoder_select="fdctdsp"
2122 qcelp_decoder_select="lsp"
2123 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2124 ra_144_encoder_select="audio_frame_queue lpc"
2125 ralf_decoder_select="golomb"
2126 rscc_decoder_deps="zlib"
2127 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2128 rv10_encoder_select="h263_encoder"
2129 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2130 rv20_encoder_select="h263_encoder"
2131 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2132 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2133 screenpresso_decoder_deps="zlib"
2134 sipr_decoder_select="lsp"
2135 sp5x_decoder_select="mjpeg_decoder"
2136 svq1_decoder_select="hpeldsp"
2137 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2138 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2139 svq3_decoder_suggest="zlib"
2140 tak_decoder_select="audiodsp"
2141 tdsc_decoder_deps="zlib"
2142 tdsc_decoder_select="mjpeg_decoder"
2143 theora_decoder_select="vp3_decoder"
2144 thp_decoder_select="mjpeg_decoder"
2145 tiff_decoder_suggest="zlib"
2146 tiff_encoder_suggest="zlib"
2147 truehd_decoder_select="mlp_decoder"
2148 truemotion2_decoder_select="bswapdsp"
2149 truespeech_decoder_select="bswapdsp"
2150 tscc_decoder_deps="zlib"
2151 txd_decoder_select="texturedsp"
2152 twinvq_decoder_select="mdct lsp sinewin"
2153 utvideo_decoder_select="bswapdsp huffyuvdsp"
2154 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2155 vble_decoder_select="huffyuvdsp"
2156 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2157 vc1image_decoder_select="vc1_decoder"
2158 vorbis_decoder_select="mdct"
2159 vorbis_encoder_select="mdct"
2160 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2161 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2162 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2163 vp6a_decoder_select="vp6_decoder"
2164 vp6f_decoder_select="vp6_decoder"
2165 vp7_decoder_select="h264pred videodsp vp8dsp"
2166 vp8_decoder_select="h264pred videodsp vp8dsp"
2167 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2168 webp_decoder_select="vp8_decoder"
2169 wmapro_decoder_select="mdct sinewin wma_freqs"
2170 wmav1_decoder_select="mdct sinewin wma_freqs"
2171 wmav1_encoder_select="mdct sinewin wma_freqs"
2172 wmav2_decoder_select="mdct sinewin wma_freqs"
2173 wmav2_encoder_select="mdct sinewin wma_freqs"
2174 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2175 wmv1_decoder_select="h263_decoder"
2176 wmv1_encoder_select="h263_encoder"
2177 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2178 wmv2_encoder_select="h263_encoder wmv2dsp"
2179 wmv3_decoder_select="vc1_decoder"
2180 wmv3image_decoder_select="wmv3_decoder"
2181 zerocodec_decoder_deps="zlib"
2182 zlib_decoder_deps="zlib"
2183 zlib_encoder_deps="zlib"
2184 zmbv_decoder_deps="zlib"
2185 zmbv_encoder_deps="zlib"
2186
2187 # hardware accelerators
2188 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2189 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2190 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2191 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2192
2193 h263_vaapi_hwaccel_deps="vaapi"
2194 h263_vaapi_hwaccel_select="h263_decoder"
2195 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2196 h264_cuvid_hwaccel_select="h264_decoder"
2197 h264_d3d11va_hwaccel_deps="d3d11va"
2198 h264_d3d11va_hwaccel_select="h264_decoder"
2199 h264_d3d11va2_hwaccel_deps="d3d11va"
2200 h264_d3d11va2_hwaccel_select="h264_decoder"
2201 h264_dxva2_hwaccel_deps="dxva2"
2202 h264_dxva2_hwaccel_select="h264_decoder"
2203 h264_mmal_hwaccel_deps="mmal"
2204 h264_qsv_hwaccel_deps="libmfx"
2205 h264_vaapi_hwaccel_deps="vaapi"
2206 h264_vaapi_hwaccel_select="h264_decoder"
2207 h264_vda_hwaccel_deps="vda"
2208 h264_vda_hwaccel_select="h264_decoder"
2209 h264_vda_old_hwaccel_deps="vda"
2210 h264_vda_old_hwaccel_select="h264_decoder"
2211 h264_vdpau_hwaccel_deps="vdpau"
2212 h264_vdpau_hwaccel_select="h264_decoder"
2213 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2214 hevc_cuvid_hwaccel_select="hevc_decoder"
2215 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2216 hevc_d3d11va_hwaccel_select="hevc_decoder"
2217 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2218 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2219 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2220 hevc_dxva2_hwaccel_select="hevc_decoder"
2221 hevc_qsv_hwaccel_deps="libmfx"
2222 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2223 hevc_vaapi_hwaccel_select="hevc_decoder"
2224 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2225 hevc_vdpau_hwaccel_select="hevc_decoder"
2226 mpeg1_vdpau_hwaccel_deps="vdpau"
2227 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2228 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2229 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2230 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2231 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2232 mpeg2_dxva2_hwaccel_deps="dxva2"
2233 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2234 mpeg2_mmal_hwaccel_deps="mmal"
2235 mpeg2_qsv_hwaccel_deps="libmfx"
2236 mpeg2_vaapi_hwaccel_deps="vaapi"
2237 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2238 mpeg2_vdpau_hwaccel_deps="vdpau"
2239 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2240 mpeg4_vaapi_hwaccel_deps="vaapi"
2241 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2242 mpeg4_vdpau_hwaccel_deps="vdpau"
2243 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2244 vc1_d3d11va_hwaccel_deps="d3d11va"
2245 vc1_d3d11va_hwaccel_select="vc1_decoder"
2246 vc1_d3d11va2_hwaccel_deps="d3d11va"
2247 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2248 vc1_dxva2_hwaccel_deps="dxva2"
2249 vc1_dxva2_hwaccel_select="vc1_decoder"
2250 vc1_mmal_hwaccel_deps="mmal"
2251 vc1_qsv_hwaccel_deps="libmfx"
2252 vc1_vaapi_hwaccel_deps="vaapi"
2253 vc1_vaapi_hwaccel_select="vc1_decoder"
2254 vc1_vdpau_hwaccel_deps="vdpau"
2255 vc1_vdpau_hwaccel_select="vc1_decoder"
2256 vp8_qsv_hwaccel_deps="libmfx"
2257 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2258 vp8_vaapi_hwaccel_select="vp8_decoder"
2259 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2260 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2261 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2262 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2263 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2264
2265 # hardware-accelerated codecs
2266 nvenc_deps_any="libdl LoadLibrary"
2267 omx_deps="libdl pthreads"
2268 omx_rpi_select="omx"
2269 qsv_deps="libmfx"
2270 qsvdec_select="qsv"
2271 qsvenc_select="qsv"
2272 vaapi_encode_deps="vaapi"
2273
2274 hwupload_cuda_filter_deps="cuda"
2275 scale_npp_filter_deps="cuda libnpp"
2276
2277 h264_mmal_decoder_deps="mmal"
2278 h264_nvenc_encoder_deps="nvenc"
2279 h264_omx_encoder_deps="omx"
2280 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2281 h264_qsv_encoder_select="qsvenc"
2282 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2283 h264_vaapi_encoder_select="vaapi_encode golomb"
2284 hevc_nvenc_encoder_deps="nvenc"
2285 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2286 hevc_qsv_encoder_select="hevc_ps qsvenc"
2287 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2288 hevc_vaapi_encoder_select="vaapi_encode golomb"
2289 mjpeg_qsv_encoder_deps="libmfx"
2290 mjpeg_qsv_encoder_select="qsvenc"
2291 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2292 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2293 mpeg2_mmal_decoder_deps="mmal"
2294 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2295 mpeg2_qsv_encoder_select="qsvenc"
2296 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2297 mpeg2_vaapi_encoder_select="vaapi_encode"
2298 mpeg4_omx_encoder_deps="omx"
2299 vc1_mmal_decoder_deps="mmal"
2300 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2301 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2302 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2303 vp8_vaapi_encoder_select="vaapi_encode"
2304 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2305 vp9_vaapi_encoder_select="vaapi_encode"
2306
2307 nvenc_h264_encoder_select="h264_nvenc_encoder"
2308 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2309
2310 # parsers
2311 aac_parser_select="adts_header"
2312 h264_parser_select="golomb h264dsp h264parse"
2313 hevc_parser_select="hevc_ps"
2314 mpegaudio_parser_select="mpegaudioheader"
2315 mpegvideo_parser_select="mpegvideo"
2316 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2317 vc1_parser_select="vc1dsp"
2318
2319 # bitstream_filters
2320 aac_adtstoasc_bsf_select="adts_header"
2321 mjpeg2jpeg_bsf_select="jpegtables"
2322
2323 # external libraries
2324 avisynth_deps="LoadLibrary"
2325 avxsynth_deps="libdl"
2326 avisynth_demuxer_deps_any="avisynth avxsynth"
2327 avisynth_demuxer_select="riffdec"
2328 libdcadec_decoder_deps="libdcadec"
2329 libfaac_encoder_deps="libfaac"
2330 libfaac_encoder_select="audio_frame_queue"
2331 libfdk_aac_decoder_deps="libfdk_aac"
2332 libfdk_aac_encoder_deps="libfdk_aac"
2333 libfdk_aac_encoder_select="audio_frame_queue"
2334 libgsm_decoder_deps="libgsm"
2335 libgsm_encoder_deps="libgsm"
2336 libgsm_ms_decoder_deps="libgsm"
2337 libgsm_ms_encoder_deps="libgsm"
2338 libilbc_decoder_deps="libilbc"
2339 libilbc_encoder_deps="libilbc"
2340 libkvazaar_encoder_deps="libkvazaar"
2341 libmp3lame_encoder_deps="libmp3lame"
2342 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2343 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2344 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2345 libopencore_amrnb_encoder_select="audio_frame_queue"
2346 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2347 libopenh264_decoder_deps="libopenh264"
2348 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2349 libopenh264_encoder_deps="libopenh264"
2350 libopenjpeg_decoder_deps="libopenjpeg"
2351 libopenjpeg_encoder_deps="libopenjpeg"
2352 libopus_decoder_deps="libopus"
2353 libopus_encoder_deps="libopus"
2354 libopus_encoder_select="audio_frame_queue"
2355 libschroedinger_decoder_deps="libschroedinger"
2356 libschroedinger_encoder_deps="libschroedinger"
2357 libspeex_decoder_deps="libspeex"
2358 libspeex_encoder_deps="libspeex"
2359 libspeex_encoder_select="audio_frame_queue"
2360 libtheora_encoder_deps="libtheora"
2361 libtwolame_encoder_deps="libtwolame"
2362 libvo_aacenc_encoder_deps="libvo_aacenc"
2363 libvo_aacenc_encoder_select="audio_frame_queue"
2364 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2365 libvorbis_encoder_deps="libvorbis"
2366 libvorbis_encoder_select="audio_frame_queue"
2367 libvpx_vp8_decoder_deps="libvpx"
2368 libvpx_vp8_encoder_deps="libvpx"
2369 libvpx_vp9_decoder_deps="libvpx"
2370 libvpx_vp9_encoder_deps="libvpx"
2371 libwavpack_encoder_deps="libwavpack"
2372 libwavpack_encoder_select="audio_frame_queue"
2373 libwebp_encoder_deps="libwebp"
2374 libx262_encoder_deps="libx262"
2375 libx264_encoder_deps="libx264"
2376 libx265_encoder_deps="libx265"
2377 libxavs_encoder_deps="libxavs"
2378 libxvid_encoder_deps="libxvid mkstemp"
2379
2380 # demuxers / muxers
2381 ac3_demuxer_select="ac3_parser"
2382 asf_demuxer_select="riffdec"
2383 asf_muxer_select="riffenc"
2384 asf_stream_muxer_select="asf_muxer"
2385 avi_demuxer_select="iso_media riffdec"
2386 avi_muxer_select="riffenc"
2387 caf_demuxer_select="iso_media riffdec"
2388 dash_muxer_select="mp4_muxer"
2389 dirac_demuxer_select="dirac_parser"
2390 dv_demuxer_select="dvprofile"
2391 dv_muxer_select="dvprofile"
2392 dxa_demuxer_select="riffdec"
2393 eac3_demuxer_select="ac3_parser"
2394 f4v_muxer_select="mov_muxer"
2395 flac_demuxer_select="flac_parser"
2396 hds_muxer_select="flv_muxer"
2397 hls_muxer_select="mpegts_muxer"
2398 ipod_muxer_select="mov_muxer"
2399 ismv_muxer_select="mov_muxer"
2400 matroska_audio_muxer_select="matroska_muxer"
2401 matroska_demuxer_select="iso_media riffdec"
2402 matroska_demuxer_suggest="bzlib lzo zlib"
2403 matroska_muxer_select="iso_media riffenc"
2404 mmf_muxer_select="riffenc"
2405 mov_demuxer_select="iso_media riffdec"
2406 mov_demuxer_suggest="zlib"
2407 mov_muxer_select="iso_media riffenc rtpenc_chain"
2408 mp3_demuxer_select="mpegaudio_parser"
2409 mp3_muxer_select="mpegaudioheader"
2410 mp4_muxer_select="mov_muxer"
2411 mpegts_demuxer_select="iso_media"
2412 mpegts_muxer_select="adts_muxer latm_muxer"
2413 mpegtsraw_demuxer_select="mpegts_demuxer"
2414 mxf_d10_muxer_select="mxf_muxer"
2415 nut_muxer_select="riffenc"
2416 nuv_demuxer_select="riffdec"
2417 oga_muxer_select="ogg_muxer"
2418 ogg_demuxer_select="dirac_parse"
2419 opus_muxer_select="ogg_muxer"
2420 psp_muxer_select="mov_muxer"
2421 rtp_demuxer_select="sdp_demuxer"
2422 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2423 rtsp_demuxer_select="http_protocol rtpdec"
2424 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2425 sap_demuxer_select="sdp_demuxer"
2426 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2427 sdp_demuxer_select="rtpdec"
2428 smoothstreaming_muxer_select="ismv_muxer"
2429 spdif_demuxer_select="adts_header"
2430 spdif_muxer_select="adts_header"
2431 spx_muxer_select="ogg_muxer"
2432 swf_demuxer_suggest="zlib"
2433 tak_demuxer_select="tak_parser"
2434 tg2_muxer_select="mov_muxer"
2435 tgp_muxer_select="mov_muxer"
2436 w64_demuxer_select="wav_demuxer"
2437 wav_demuxer_select="riffdec"
2438 wav_muxer_select="riffenc"
2439 webm_muxer_select="iso_media riffenc"
2440 wtv_demuxer_select="mpegts_demuxer riffdec"
2441 xmv_demuxer_select="riffdec"
2442 xwma_demuxer_select="riffdec"
2443
2444 # indevs / outdevs
2445 alsa_indev_deps="alsa"
2446 alsa_outdev_deps="alsa"
2447 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2448 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2449 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2450 dv1394_indev_deps="dv1394"
2451 dv1394_indev_select="dv_demuxer"
2452 fbdev_indev_deps="linux_fb_h"
2453 jack_indev_deps="libjack"
2454 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2455 libcdio_indev_deps="libcdio"
2456 libdc1394_indev_deps="libdc1394"
2457 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2458 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2459 pulse_indev_deps="libpulse"
2460 sndio_indev_deps="sndio"
2461 sndio_outdev_deps="sndio"
2462 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2463 vfwcap_indev_deps="vfw32 vfwcap_defines"
2464 xcbgrab_indev_deps="libxcb libxcb_shape"
2465 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2466
2467 # protocols
2468 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2469 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2470 ffrtmpcrypt_protocol_select="tcp_protocol"
2471 ffrtmphttp_protocol_conflict="librtmp_protocol"
2472 ffrtmphttp_protocol_select="http_protocol"
2473 gopher_protocol_select="network"
2474 http_protocol_select="tcp_protocol"
2475 http_protocol_suggest="zlib"
2476 httpproxy_protocol_select="tcp_protocol"
2477 httpproxy_protocol_suggest="zlib"
2478 https_protocol_select="tls_protocol"
2479 https_protocol_suggest="zlib"
2480 icecast_protocol_select="http_protocol"
2481 librtmp_protocol_deps="librtmp"
2482 librtmpe_protocol_deps="librtmp"
2483 librtmps_protocol_deps="librtmp"
2484 librtmpt_protocol_deps="librtmp"
2485 librtmpte_protocol_deps="librtmp"
2486 mmsh_protocol_select="http_protocol"
2487 mmst_protocol_select="network"
2488 rtmp_protocol_conflict="librtmp_protocol"
2489 rtmp_protocol_select="tcp_protocol"
2490 rtmp_protocol_suggest="zlib"
2491 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2492 rtmpe_protocol_suggest="zlib"
2493 rtmps_protocol_conflict="librtmp_protocol"
2494 rtmps_protocol_select="tls_protocol"
2495 rtmps_protocol_suggest="zlib"
2496 rtmpt_protocol_select="ffrtmphttp_protocol"
2497 rtmpt_protocol_suggest="zlib"
2498 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2499 rtmpte_protocol_suggest="zlib"
2500 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2501 rtmpts_protocol_suggest="zlib"
2502 rtp_protocol_select="udp_protocol"
2503 sctp_protocol_deps="struct_sctp_event_subscribe"
2504 sctp_protocol_select="network"
2505 srtp_protocol_select="rtp_protocol srtp"
2506 tcp_protocol_select="network"
2507 tls_protocol_deps_any="gnutls openssl"
2508 tls_protocol_select="tcp_protocol"
2509 udp_protocol_select="network"
2510 unix_protocol_deps="sys_un_h"
2511 unix_protocol_select="network"
2512
2513 # filters
2514 asyncts_filter_deps="avresample"
2515 blackframe_filter_deps="gpl"
2516 boxblur_filter_deps="gpl"
2517 bs2b_filter_deps="libbs2b"
2518 cropdetect_filter_deps="gpl"
2519 deinterlace_qsv_filter_deps="libmfx"
2520 deinterlace_vaapi_filter_deps="vaapi"
2521 delogo_filter_deps="gpl"
2522 drawtext_filter_deps="libfreetype"
2523 drawtext_filter_suggest="libfontconfig"
2524 frei0r_filter_deps="frei0r libdl"
2525 frei0r_src_filter_deps="frei0r libdl"
2526 hdcd_filter_deps="libhdcd"
2527 hqdn3d_filter_deps="gpl"
2528 interlace_filter_deps="gpl"
2529 movie_filter_deps="avcodec avformat"
2530 ocv_filter_deps="libopencv"
2531 resample_filter_deps="avresample"
2532 scale_filter_deps="swscale"
2533 scale_qsv_filter_deps="libmfx"
2534 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2535
2536 # examples
2537 decode_audio_example_deps="avcodec avutil"
2538 decode_video_example_deps="avcodec avutil"
2539 encode_audio_example_deps="avcodec avutil"
2540 encode_video_example_deps="avcodec avutil"
2541 filter_audio_example_deps="avfilter avutil"
2542 metadata_example_deps="avformat avutil"
2543 output_example_deps="avcodec avformat avresample avutil swscale"
2544 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2545 transcode_aac_example_deps="avcodec avformat avresample"
2546
2547 # EXTRALIBS_LIST
2548 cpu_init_extralibs="pthreads_extralibs"
2549 cws2fws_extralibs="zlib_extralibs"
2550
2551 # libraries, in linking order
2552 avcodec_deps="avutil"
2553 avcodec_select="null_bsf"
2554 avdevice_deps="avformat avcodec avutil"
2555 avfilter_deps="avutil"
2556 avformat_deps="avcodec avutil"
2557 avformat_suggest="network"
2558 avresample_deps="avutil"
2559 swscale_deps="avutil"
2560
2561 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2562 avdevice_extralibs="libm_extralibs"
2563 avformat_extralibs="libm_extralibs"
2564 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2565 avresample_extralibs="libm_extralibs"
2566 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"
2567 swscale_extralibs="libm_extralibs"
2568
2569 # programs
2570 avconv_deps="avcodec avfilter avformat avresample swscale"
2571 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2572                fps_filter null_filter resample_filter scale_filter
2573                trim_filter"
2574 avconv_suggest="psapi shell32"
2575 avplay_deps="avcodec avfilter avformat avresample sdl"
2576 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2577 avplay_suggest="shell32"
2578 avprobe_deps="avcodec avformat"
2579 avprobe_suggest="shell32"
2580
2581 # documentation
2582 pod2man_deps="doc"
2583 texi2html_deps="doc"
2584
2585 # default parameters
2586
2587 logfile="avbuild/config.log"
2588
2589 # installation paths
2590 prefix_default="/usr/local"
2591 bindir_default='${prefix}/bin'
2592 datadir_default='${prefix}/share/avconv'
2593 docdir_default='${prefix}/share/doc/libav'
2594 incdir_default='${prefix}/include'
2595 libdir_default='${prefix}/lib'
2596 mandir_default='${prefix}/share/man'
2597 shlibdir_default="$libdir_default"
2598
2599 # toolchain
2600 ar_default="ar"
2601 cc_default="gcc"
2602 host_cc_default="gcc"
2603 x86asmexe_default="nasm"
2604 ln_s="ln -s -f"
2605 nm_default="nm -g"
2606 pkg_config_default=pkg-config
2607 ranlib="ranlib"
2608 strip="strip"
2609 version_script='--version-script'
2610
2611 # machine
2612 arch_default=$(uname -m)
2613 cpu="generic"
2614 intrinsics="none"
2615
2616 # OS
2617 target_os_default=$(tolower $(uname -s))
2618 host_os=$target_os_default
2619
2620 # configurable options
2621 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2622
2623 enable asm
2624 enable debug
2625 enable doc
2626 enable faan faandct faanidct
2627 enable optimizations
2628 enable safe_bitstream_reader
2629 enable static
2630 enable swscale_alpha
2631 enable valgrind_backtrace
2632
2633 # By default, enable only those hwaccels that have no external dependencies.
2634 enable d3d11va dxva2 vda vdpau
2635
2636 # internal components are enabled by default
2637 enable $EXTRALIBS_LIST
2638
2639 # Avoid external, non-system, libraries getting enabled by dependency resolution
2640 disable $EXTERNAL_LIBRARY_LIST
2641
2642 # build settings
2643 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2644 LIBPREF="lib"
2645 LIBSUF=".a"
2646 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2647 SLIBPREF="lib"
2648 SLIBSUF=".so"
2649 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2650 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2651 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2652 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2653 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2654 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2655 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2656
2657 asflags_filter=echo
2658 cflags_filter=echo
2659 ldflags_filter=echo
2660
2661 AS_C='-c'
2662 AS_O='-o $@'
2663 CC_C='-c'
2664 CC_E='-E -o $@'
2665 CC_O='-o $@'
2666 OBJCC_C='-c'
2667 OBJCC_E='-E -o $@'
2668 OBJCC_O='-o $@'
2669 X86ASM_O='-o $@'
2670 LD_O='-o $@'
2671 LD_LIB='-l%'
2672 LD_PATH='-L'
2673 HOSTCC_C='-c'
2674 HOSTCC_E='-E -o $@'
2675 HOSTCC_O='-o $@'
2676 HOSTLD_O='-o $@'
2677
2678 host_extralibs='-lm'
2679 host_cflags_filter=echo
2680 host_ldflags_filter=echo
2681
2682 target_path='$(CURDIR)'
2683
2684 # since the object filename is not given with the -MM flag, the compiler
2685 # is only able to print the basename, and we must add the path ourselves
2686 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2687 DEPFLAGS='-MM'
2688
2689 mkdir -p avbuild
2690
2691 # find source path
2692 if test -f configure; then
2693     source_path=.
2694 else
2695     source_path=$(cd $(dirname "$0"); pwd)
2696     echo "$source_path" | grep -q '[[:blank:]]' &&
2697         die "Out of tree builds are impossible with whitespace in source path."
2698     test -e "$source_path/config.h" &&
2699         die "Out of tree builds are impossible with config.h in source dir."
2700 fi
2701
2702 for v in "$@"; do
2703     r=${v#*=}
2704     l=${v%"$r"}
2705     r=$(sh_quote "$r")
2706     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2707 done
2708
2709 find_things(){
2710     thing=$1
2711     pattern=$2
2712     file=$source_path/$3
2713     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2714 }
2715
2716 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2717 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2718 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2719 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2720 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2721 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2722 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2723 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2724 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2725
2726 find_things_extern(){
2727     thing=$1
2728     pattern=$2
2729     file=$source_path/$3
2730     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2731 }
2732
2733 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2734 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2735
2736 AVCODEC_COMPONENTS_LIST="
2737     $BSF_LIST
2738     $DECODER_LIST
2739     $ENCODER_LIST
2740     $HWACCEL_LIST
2741     $PARSER_LIST
2742 "
2743
2744 AVDEVICE_COMPONENTS_LIST="
2745     $INDEV_LIST
2746     $OUTDEV_LIST
2747 "
2748
2749 AVFILTER_COMPONENTS_LIST="
2750     $FILTER_LIST
2751 "
2752
2753 AVFORMAT_COMPONENTS_LIST="
2754     $DEMUXER_LIST
2755     $MUXER_LIST
2756     $PROTOCOL_LIST
2757 "
2758
2759 ALL_COMPONENTS="
2760     $AVCODEC_COMPONENTS_LIST
2761     $AVDEVICE_COMPONENTS_LIST
2762     $AVFILTER_COMPONENTS_LIST
2763     $AVFORMAT_COMPONENTS_LIST
2764 "
2765
2766 for n in $COMPONENT_LIST; do
2767     v=$(toupper ${n%s})_LIST
2768     eval enable \$$v
2769     eval ${n}_if_any="\$$v"
2770 done
2771
2772 enable $ARCH_EXT_LIST
2773
2774 die_unknown(){
2775     echo "Unknown option \"$1\"."
2776     echo "See $0 --help for available options."
2777     exit 1
2778 }
2779
2780 print_3_columns() {
2781     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2782 }
2783
2784 show_list() {
2785     suffix=_$1
2786     shift
2787     echo $* | sed s/$suffix//g | print_3_columns
2788     exit 0
2789 }
2790
2791 rand_list(){
2792     IFS=', '
2793     set -- $*
2794     unset IFS
2795     for thing; do
2796         comp=${thing%:*}
2797         prob=${thing#$comp}
2798         prob=${prob#:}
2799         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2800         echo "prob ${prob:-0.5}"
2801         printf '%s\n' $comp
2802     done
2803 }
2804
2805 do_random(){
2806     action=$1
2807     shift
2808     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2809     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2810 }
2811
2812 for opt do
2813     optval="${opt#*=}"
2814     case "$opt" in
2815         --extra-ldflags=*)
2816             add_ldflags $optval
2817         ;;
2818         --extra-ldexeflags=*)
2819             add_ldexeflags $optval
2820         ;;
2821         --extra-ldsoflags=*)
2822             add_ldsoflags $optval
2823         ;;
2824         --extra-libs=*)
2825             add_extralibs $optval
2826         ;;
2827         --disable-devices)
2828             disable $INDEV_LIST $OUTDEV_LIST
2829         ;;
2830         --enable-debug=*)
2831             debuglevel="$optval"
2832         ;;
2833         --disable-programs)
2834             disable $PROGRAM_LIST
2835         ;;
2836         --disable-everything)
2837             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2838         ;;
2839         --disable-all)
2840             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2841             disable $LIBRARY_LIST $PROGRAM_LIST doc
2842         ;;
2843         --enable-random|--disable-random)
2844             action=${opt%%-random}
2845             do_random ${action#--} $COMPONENT_LIST
2846         ;;
2847         --enable-random=*|--disable-random=*)
2848             action=${opt%%-random=*}
2849             do_random ${action#--} $optval
2850         ;;
2851         --enable-*=*|--disable-*=*)
2852             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2853             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2854             eval list=\$$(toupper $thing)_LIST
2855             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2856             $action $(filter "$name" $list)
2857         ;;
2858         --enable-avserver|--disable-avserver*)
2859             warn "avserver has been removed, the ${opt} option is only"\
2860                  "provided for compatibility and will be removed in the future"
2861         ;;
2862         --enable-yasm|--disable-yasm)
2863             warn "The ${opt} option is only provided for compatibility and will be\n"\
2864                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2865             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2866         ;;
2867         --enable-?*|--disable-?*)
2868             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2869             if is_in $option $COMPONENT_LIST; then
2870                 test $action = disable && action=unset
2871                 eval $action \$$(toupper ${option%s})_LIST
2872             elif is_in $option $CMDLINE_SELECT; then
2873                 $action $option
2874             else
2875                 die_unknown $opt
2876             fi
2877         ;;
2878         --list-*)
2879             NAME="${opt#--list-}"
2880             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2881             NAME=${NAME%s}
2882             eval show_list $NAME \$$(toupper $NAME)_LIST
2883         ;;
2884         --help|-h) show_help
2885         ;;
2886         --quiet|-q) quiet=yes
2887         ;;
2888         *)
2889             optname="${opt%%=*}"
2890             optname="${optname#--}"
2891             optname=$(echo "$optname" | sed 's/-/_/g')
2892             if is_in $optname $CMDLINE_SET; then
2893                 eval $optname='$optval'
2894             elif is_in $optname $CMDLINE_APPEND; then
2895                 append $optname "$optval"
2896             else
2897                 die_unknown $opt
2898             fi
2899         ;;
2900     esac
2901 done
2902
2903 for e in $env; do
2904     eval "export $e"
2905 done
2906
2907 disabled logging && logfile=/dev/null
2908
2909 # Die early if licensing-related configure options are incompatible.
2910 die_license_disabled() {
2911     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2912 }
2913
2914 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2915 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2916 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2917
2918 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2919
2920 enabled_all gnutls openssl &&
2921     die "GnuTLS and OpenSSL must not be enabled at the same time."
2922
2923 # Disable all the library-specific components if the library itself
2924 # is disabled, see AVCODEC_LIST and following _LIST variables.
2925
2926 disable_components(){
2927     disabled ${1} && disable $(
2928         eval components="\$$(toupper ${1})_COMPONENTS"
2929         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2930     )
2931 }
2932
2933 map 'disable_components $v' $LIBRARY_LIST
2934
2935 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2936 set >> $logfile
2937
2938 case "$toolchain" in
2939     *-asan)
2940         cc_default="${toolchain%-asan}"
2941         add_cflags  -fsanitize=address
2942         add_ldflags -fsanitize=address
2943     ;;
2944     *-msan)
2945         cc_default="${toolchain%-msan}"
2946         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2947         add_ldflags -fsanitize=memory
2948     ;;
2949     *-tsan)
2950         cc_default="${toolchain%-tsan}"
2951         add_cflags  -fsanitize=thread -fPIE
2952         add_ldflags -fsanitize=thread -pie
2953         case "$toolchain" in
2954             gcc-tsan)
2955                 add_cflags  -fPIC
2956                 add_ldflags -fPIC
2957                 ;;
2958         esac
2959     ;;
2960     *-usan)
2961         cc_default="${toolchain%-usan}"
2962         add_cflags  -fsanitize=undefined
2963         add_ldflags -fsanitize=undefined
2964         case "$toolchain" in
2965             clang-usan)
2966                 add_cflags -O1
2967                 ;;
2968         esac
2969     ;;
2970     valgrind-*)
2971         target_exec_default="valgrind"
2972         case "$toolchain" in
2973             valgrind-massif)
2974                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2975                 ;;
2976             valgrind-memcheck)
2977                 target_exec_args="--track-origins=yes --leak-check=full"
2978                 ;;
2979         esac
2980     ;;
2981     msvc)
2982         # Check whether the current MSVC version needs the C99 converter.
2983         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2984         # support enough of C99 to build libav. Default to the new
2985         # behaviour if the regexp was unable to match anything, since this
2986         # successfully parses the version number of existing supported
2987         # versions that require the converter (MSVC 2010 and 2012).
2988         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2989         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2990             cc_default="cl"
2991         else
2992             cc_default="c99wrap cl"
2993         fi
2994         ld_default="$source_path/compat/windows/mslink"
2995         nm_default="dumpbin -symbols"
2996         ar_default="lib"
2997         case "$arch" in
2998         arm*)
2999             as_default="armasm"
3000             ;;
3001         esac
3002         target_os_default="win32"
3003         # Use a relative path for TMPDIR. This makes sure all the
3004         # ffconf temp files are written with a relative path, avoiding
3005         # issues with msys/win32 path conversion for MSVC parameters
3006         # such as -Fo<file> or -out:<file>.
3007         TMPDIR=.
3008     ;;
3009     icl)
3010         cc_default="icl"
3011         ld_default="xilink"
3012         nm_default="dumpbin -symbols"
3013         ar_default="xilib"
3014         target_os_default="win32"
3015         TMPDIR=.
3016     ;;
3017     gcov)
3018         add_cflags  -fprofile-arcs -ftest-coverage
3019         add_ldflags -fprofile-arcs -ftest-coverage
3020     ;;
3021     llvm-cov)
3022         add_cflags -fprofile-arcs -ftest-coverage
3023         add_ldflags --coverage
3024     ;;
3025     hardened)
3026         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3027         add_cflags   -fno-strict-overflow -fstack-protector-all
3028         add_ldflags  -Wl,-z,relro -Wl,-z,now
3029     ;;
3030     ?*)
3031         die "Unknown toolchain $toolchain"
3032     ;;
3033 esac
3034
3035 test -n "$cross_prefix" && enable cross_compile
3036
3037 if enabled cross_compile; then
3038     test -n "$arch" && test -n "$target_os" ||
3039         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3040 fi
3041
3042 ar_default="${cross_prefix}${ar_default}"
3043 cc_default="${cross_prefix}${cc_default}"
3044 objcc_default="${cross_prefix}${objcc_default}"
3045 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3046 nm_default="${cross_prefix}${nm_default}"
3047 pkg_config_default="${cross_prefix}${pkg_config_default}"
3048 ranlib="${cross_prefix}${ranlib}"
3049 strip="${cross_prefix}${strip}"
3050
3051 sysinclude_default="${sysroot}/usr/include"
3052
3053 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3054 enabled cross_compile || host_cc_default=$cc
3055 set_default host_cc
3056
3057 if ! $pkg_config --version >/dev/null 2>&1; then
3058     warn "$pkg_config not found, library detection may fail."
3059     pkg_config=false
3060 fi
3061
3062 exesuf() {
3063     case $1 in
3064         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3065     esac
3066 }
3067
3068 EXESUF=$(exesuf $target_os)
3069 HOSTEXESUF=$(exesuf $host_os)
3070
3071 # set temporary file name
3072 : ${TMPDIR:=$TEMPDIR}
3073 : ${TMPDIR:=$TMP}
3074 : ${TMPDIR:=/tmp}
3075
3076 if ! check_cmd mktemp -u XXXXXX; then
3077     # simple replacement for missing mktemp
3078     # NOT SAFE FOR GENERAL USE
3079     mktemp(){
3080         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3081         echo "$tmpname"
3082         mkdir "$tmpname"
3083     }
3084 fi
3085
3086 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3087     die "Unable to create temporary directory in $TMPDIR."
3088
3089 tmpfile(){
3090     tmp="${AVTMPDIR}/test"$2
3091     (set -C; exec > $tmp) 2> /dev/null ||
3092         die "Unable to create temporary file in $AVTMPDIR."
3093     eval $1=$tmp
3094 }
3095
3096 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3097 trap 'exit 2' INT
3098
3099 tmpfile TMPASM .asm
3100 tmpfile TMPC   .c
3101 tmpfile TMPE   $EXESUF
3102 tmpfile TMPH   .h
3103 tmpfile TMPO   .o
3104 tmpfile TMPS   .S
3105 tmpfile TMPSH  .sh
3106 tmpfile TMPV   .ver
3107
3108 unset -f mktemp
3109
3110 chmod +x $TMPE
3111
3112 # make sure we can execute files in $TMPDIR
3113 cat > $TMPSH 2>> $logfile <<EOF
3114 #! /bin/sh
3115 EOF
3116 chmod +x $TMPSH >> $logfile 2>&1
3117 if ! $TMPSH >> $logfile 2>&1; then
3118     cat <<EOF
3119 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3120 variable to another directory and make sure that it is not mounted noexec.
3121 EOF
3122     die "Sanity test failed."
3123 fi
3124
3125 armasm_flags(){
3126     for flag; do
3127         case $flag in
3128             # Filter out MSVC cl.exe options from cflags that shouldn't
3129             # be passed to gas-preprocessor
3130             -M[TD]*)                                            ;;
3131             *)                  echo $flag                      ;;
3132         esac
3133    done
3134 }
3135
3136 ccc_flags(){
3137     for flag; do
3138         case $flag in
3139             -std=c99)           echo -c99                       ;;
3140             -mcpu=*)            echo -arch ${flag#*=}           ;;
3141             -mieee)             echo -ieee                      ;;
3142             -O*|-fast)          echo $flag                      ;;
3143             -fno-math-errno)    echo -assume nomath_errno       ;;
3144             -g)                 echo -g3                        ;;
3145             -Wall)              echo -msg_enable level2         ;;
3146             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3147             -Wl,*)              echo $flag                      ;;
3148             -f*|-W*)                                            ;;
3149             *)                  echo $flag                      ;;
3150         esac
3151    done
3152 }
3153
3154 cparser_flags(){
3155     for flag; do
3156         case $flag in
3157             -Wno-switch)             echo -Wno-switch-enum ;;
3158             -Wno-format-zero-length) ;;
3159             -Wdisabled-optimization) ;;
3160             -Wno-pointer-sign)       echo -Wno-other ;;
3161             *)                       echo $flag ;;
3162         esac
3163     done
3164 }
3165
3166 msvc_common_flags(){
3167     for flag; do
3168         case $flag in
3169             # In addition to specifying certain flags under the compiler
3170             # specific filters, they must be specified here as well or else the
3171             # generic catch all at the bottom will print the original flag.
3172             -Wall)                ;;
3173             -Wextra)              ;;
3174             -std=c99)             ;;
3175             # Common flags
3176             -fomit-frame-pointer) ;;
3177             -g)                   echo -Z7 ;;
3178             -fno-math-errno)      ;;
3179             -fno-common)          ;;
3180             -fno-signed-zeros)    ;;
3181             -fPIC)                ;;
3182             -mthumb)              ;;
3183             -march=*)             ;;
3184             -lz)                  echo zlib.lib ;;
3185             -lx264)               echo libx264.lib ;;
3186             -l*)                  echo ${flag#-l}.lib ;;
3187             -L*)                  echo -libpath:${flag#-L} ;;
3188             *)                    echo $flag ;;
3189         esac
3190     done
3191 }
3192
3193 msvc_flags(){
3194     msvc_common_flags "$@"
3195     for flag; do
3196         case $flag in
3197             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3198                                        -wd4554 ;;
3199             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3200                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3201                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3202                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3203         esac
3204     done
3205 }
3206
3207 icl_flags(){
3208     msvc_common_flags "$@"
3209     for flag; do
3210         case $flag in
3211             # Despite what Intel's documentation says -Wall, which is supported
3212             # on Windows, does enable remarks so disable them here.
3213             -Wall)                echo $flag -Qdiag-disable:remark ;;
3214             -std=c99)             echo -Qstd=c99 ;;
3215         esac
3216     done
3217 }
3218
3219 pgi_flags(){
3220     for flag; do
3221         case $flag in
3222             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3223             -fomit-frame-pointer) echo -Mnoframe ;;
3224             -g)                   echo -gopt ;;
3225             *)                    echo $flag ;;
3226         esac
3227     done
3228 }
3229
3230 suncc_flags(){
3231     for flag; do
3232         case $flag in
3233             -march=*|-mcpu=*)
3234                 case "${flag#*=}" in
3235                     native)                   echo -xtarget=native       ;;
3236                     v9|niagara)               echo -xarch=sparc          ;;
3237                     ultrasparc)               echo -xarch=sparcvis       ;;
3238                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3239                     i586|pentium)             echo -xchip=pentium        ;;
3240                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3241                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3242                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3243                     pentium4*)          echo -xtarget=pentium4           ;;
3244                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3245                     *-sse3)             echo -xarch=sse3                 ;;
3246                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3247                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3248                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3249                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3250                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3251                     k8|opteron|athlon64|athlon-fx)
3252                                                echo -xarch=sse2a         ;;
3253                     athlon*)                   echo -xarch=pentium_proa  ;;
3254                 esac
3255                 ;;
3256             -std=c99)             echo -xc99              ;;
3257             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3258             -fPIC)                echo -KPIC -xcode=pic32 ;;
3259             -W*,*)                echo $flag              ;;
3260             -f*-*|-W*|-mimpure-text)                      ;;
3261             -shared)              echo -G                 ;;
3262             *)                    echo $flag              ;;
3263         esac
3264     done
3265 }
3266
3267 tms470_flags(){
3268     for flag; do
3269         case $flag in
3270             -march=*|-mcpu=*)
3271                 case "${flag#*=}" in
3272                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3273                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3274                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3275                     armv6*|arm11*)          echo -mv=6   ;;
3276                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3277                                             echo -mv=5e  ;;
3278                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3279                 esac
3280                 ;;
3281             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3282             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3283             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3284             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3285             -msoft-float)   echo --float_support=vfplib       ;;
3286             -O[0-3]|-mf=*)  echo $flag                        ;;
3287             -g)             echo -g -mn                       ;;
3288             -pds=*)         echo $flag                        ;;
3289             -D*|-I*)        echo $flag                        ;;
3290             --gcc|--abi=*)  echo $flag                        ;;
3291             -me)            echo $flag                        ;;
3292         esac
3293     done
3294 }
3295
3296 probe_cc(){
3297     pfx=$1
3298     _cc=$2
3299
3300     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3301     unset _ld_o _ldflags _ld_lib _ld_path
3302     unset _depflags _DEPCMD _DEPFLAGS
3303     _flags_filter=echo
3304
3305     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3306         _type=llvm_gcc
3307         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3308         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3309         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3310         _cflags_speed='-O3'
3311         _cflags_size='-Os'
3312     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3313         _type=gcc
3314         gcc_version=$($_cc --version | head -n1)
3315         gcc_basever=$($_cc -dumpversion)
3316         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3317         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3318         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3319         if ! $_cc -dumpversion | grep -q '^2\.'; then
3320             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3321         fi
3322         _cflags_speed='-O3'
3323         _cflags_size='-Os'
3324     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3325         _type=icc
3326         _ident=$($_cc --version | head -n1)
3327         _depflags='-MMD'
3328         _cflags_speed='-O3'
3329         _cflags_size='-Os'
3330         _cflags_noopt='-O1'
3331     elif $_cc -v 2>&1 | grep -q xlc; then
3332         _type=xlc
3333         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3334         _cflags_speed='-O5'
3335         _cflags_size='-O5 -qcompact'
3336     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3337         _type=ccc
3338         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3339         _DEPFLAGS='-M'
3340         _cflags_speed='-fast'
3341         _cflags_size='-O1'
3342         _flags_filter=ccc_flags
3343     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3344         test -d "$sysroot" || die "No valid sysroot specified."
3345         _type=armcc
3346         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3347         armcc_conf="$PWD/armcc.conf"
3348         $_cc --arm_linux_configure                 \
3349              --arm_linux_config_file="$armcc_conf" \
3350              --configure_sysroot="$sysroot"        \
3351              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3352              die "Error creating armcc configuration file."
3353         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3354         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3355         as_default="${cross_prefix}gcc"
3356         _depflags='-MMD'
3357         _cflags_speed='-O3'
3358         _cflags_size='-Os'
3359     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3360         _type=tms470
3361         _ident=$($_cc -version | head -n1 | tr -s ' ')
3362         _flags='--gcc --abi=eabi -me'
3363         _cc_e='-ppl -fe=$@'
3364         _cc_o='-fe=$@'
3365         _depflags='-ppa -ppd=$(@:.o=.d)'
3366         _cflags_speed='-O3 -mf=5'
3367         _cflags_size='-O3 -mf=2'
3368         _flags_filter=tms470_flags
3369     elif $_cc -v 2>&1 | grep -q clang; then
3370         _type=clang
3371         _ident=$($_cc --version 2>/dev/null | head -n1)
3372         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3373         _cflags_speed='-O3'
3374         _cflags_size='-Os'
3375     elif $_cc -V 2>&1 | grep -q Sun; then
3376         _type=suncc
3377         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3378         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3379         _DEPFLAGS='-xM1 -xc99'
3380         _ldflags='-std=c99'
3381         _cflags_speed='-O5'
3382         _cflags_size='-O5 -xspace'
3383         _flags_filter=suncc_flags
3384     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3385         _type=pathscale
3386         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3387         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3388         _cflags_speed='-O2'
3389         _cflags_size='-Os'
3390         _flags_filter='filter_out -Wdisabled-optimization'
3391     elif $_cc -v 2>&1 | grep -q Open64; then
3392         _type=open64
3393         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3394         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3395         _cflags_speed='-O2'
3396         _cflags_size='-Os'
3397         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3398     elif $_cc -V 2>&1 | grep -q Portland; then
3399         _type=pgi
3400         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3401         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3402         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3403         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3404         _cflags_noopt="-O1"
3405         _flags_filter=pgi_flags
3406     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3407         _type=armasm
3408         _ident=$($_cc | head -n1)
3409         # 4509: "This form of conditional instruction is deprecated"
3410         _flags="-nologo -ignore 4509"
3411         _flags_filter=armasm_flags
3412     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3413         _type=msvc
3414         _ident=$($_cc 2>&1 | head -n1)
3415         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3416         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3417         _cflags_speed="-O2"
3418         _cflags_size="-O1"
3419         _cflags_noopt="-O1"
3420         if $_cc -nologo- 2>&1 | grep -q Linker; then
3421             _ld_o='-out:$@'
3422         else
3423             _ld_o='-Fe$@'
3424         fi
3425         _cc_o='-Fo$@'
3426         _cc_e='-P -Fi$@'
3427         _flags_filter=msvc_flags
3428         _ld_lib='lib%.a'
3429         _ld_path='-libpath:'
3430         _flags='-nologo'
3431     elif $_cc 2>&1 | grep -q Intel; then
3432         _type=icl
3433         _ident=$($_cc 2>&1 | head -n1)
3434         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3435         # Not only is O3 broken on 13.x+ but it is slower on all previous
3436         # versions (tested) as well.
3437         _cflags_speed="-O2"
3438         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3439         if $_cc 2>&1 | grep -q Linker; then
3440             _ld_o='-out:$@'
3441         else
3442             _ld_o='-Fe$@'
3443         fi
3444         _cc_o='-Fo$@'
3445         _cc_e='-P'
3446         _flags_filter=icl_flags
3447         _ld_lib='lib%.a'
3448         _ld_path='-libpath:'
3449         # -Qdiag-error to make icl error when seeing certain unknown arguments
3450         _flags='-nologo -Qdiag-error:4044,10157'
3451         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3452         # with MSVC which enables it by default.
3453         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3454     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3455         # lld can emulate multiple different linkers; in ms link.exe mode,
3456         # the -? parameter gives the help output which contains an identifyable
3457         # string, while it gives an error in other modes.
3458         _type=lld-link
3459         # The link.exe mode doesn't have a switch for getting the version,
3460         # but we can force it back to gnu mode and get the version from there.
3461         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3462         _ld_o='-out:$@'
3463         _flags_filter=msvc_flags
3464         _ld_lib='lib%.a'
3465         _ld_path='-libpath:'
3466     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3467         _type=cparser
3468         _ident=$($_cc --version | head -n1)
3469         _depflags='-MMD'
3470         _cflags_speed='-O4'
3471         _cflags_size='-O2'
3472         _flags_filter=cparser_flags
3473     fi
3474
3475     eval ${pfx}_type=\$_type
3476     eval ${pfx}_ident=\$_ident
3477 }
3478
3479 set_ccvars(){
3480     eval ${1}_C=\${_cc_c-\${${1}_C}}
3481     eval ${1}_E=\${_cc_e-\${${1}_E}}
3482     eval ${1}_O=\${_cc_o-\${${1}_O}}
3483
3484     if [ -n "$_depflags" ]; then
3485         eval ${1}_DEPFLAGS=\$_depflags
3486     else
3487         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3488         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3489         eval DEP${1}FLAGS=\$_flags
3490     fi
3491 }
3492
3493 probe_cc cc "$cc"
3494 cflags_filter=$_flags_filter
3495 cflags_speed=$_cflags_speed
3496 cflags_size=$_cflags_size
3497 cflags_noopt=$_cflags_noopt
3498 add_cflags $_flags $_cflags
3499 cc_ldflags=$_ldflags
3500 set_ccvars CC
3501
3502 probe_cc hostcc "$host_cc"
3503 host_cflags_filter=$_flags_filter
3504 host_cflags_speed=$_cflags_speed
3505 add_host_cflags  $_flags $_cflags
3506 set_ccvars HOSTCC
3507
3508 test -n "$cc_type" && enable $cc_type ||
3509     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3510
3511 : ${as_default:=$cc}
3512 : ${objcc_default:=$cc}
3513 : ${dep_cc_default:=$cc}
3514 : ${ld_default:=$cc}
3515 : ${host_ld_default:=$host_cc}
3516 set_default ar as objcc dep_cc ld host_ld
3517
3518 probe_cc as "$as"
3519 asflags_filter=$_flags_filter
3520 add_asflags $_flags $_cflags
3521 set_ccvars AS
3522
3523 probe_cc objcc "$objcc"
3524 objcflags_filter=$_flags_filter
3525 add_objcflags $_flags $_cflags
3526 set_ccvars OBJC
3527
3528 probe_cc ld "$ld"
3529 ldflags_filter=$_flags_filter
3530 add_ldflags $_flags $_ldflags
3531 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3532 LD_O=${_ld_o-$LD_O}
3533 LD_LIB=${_ld_lib-$LD_LIB}
3534 LD_PATH=${_ld_path-$LD_PATH}
3535
3536 probe_cc hostld "$host_ld"
3537 host_ldflags_filter=$_flags_filter
3538 add_host_ldflags $_flags $_ldflags
3539 HOSTLD_O=${_ld_o-$HOSTLD_O}
3540
3541 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3542     probe_cc depcc "$dep_cc"
3543     CCDEP=${_DEPCMD:-$DEPCMD}
3544     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3545     DEPCCFLAGS=$_flags
3546 fi
3547
3548 if $ar 2>&1 | grep -q Microsoft; then
3549     arflags="-nologo"
3550     ar_o='-out:$@'
3551 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3552     arflags="rq"
3553     ar_o='$@'
3554 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3555     arflags='-Xany -r -c'
3556     ar_o='$@'
3557 else
3558     arflags="rc"
3559     ar_o='$@'
3560 fi
3561
3562 add_cflags $extra_cflags
3563 add_objcflags $extra_objcflags
3564 add_asflags $extra_cflags
3565
3566 if test -n "$sysroot"; then
3567     case "$cc_type" in
3568         gcc|llvm_gcc|clang)
3569             add_cppflags --sysroot="$sysroot"
3570             add_ldflags --sysroot="$sysroot"
3571         ;;
3572         tms470)
3573             add_cppflags -I"$sysinclude"
3574             add_ldflags  --sysroot="$sysroot"
3575         ;;
3576     esac
3577 fi
3578
3579 if test "$cpu" = host; then
3580     enabled cross_compile &&
3581         die "--cpu=host makes no sense when cross-compiling."
3582
3583     case "$cc_type" in
3584         gcc|llvm_gcc)
3585             check_native(){
3586                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3587                 sed -n "/cc1.*$1=/{
3588                             s/.*$1=\\([^ ]*\\).*/\\1/
3589                             p
3590                             q
3591                         }" $TMPE
3592             }
3593             cpu=$(check_native -march || check_native -mcpu)
3594         ;;
3595     esac
3596
3597     test "${cpu:-host}" = host &&
3598         die "--cpu=host not supported with compiler $cc"
3599 fi
3600
3601 # Deal with common $arch aliases
3602 case "$arch" in
3603     aarch64|arm64)
3604         arch="aarch64"
3605     ;;
3606     arm*)
3607         arch="arm"
3608     ;;
3609     mips*|IP*)
3610         case "$arch" in
3611         *el)
3612             add_cppflags -EL
3613             add_ldflags -EL
3614         ;;
3615         *eb)
3616             add_cppflags -EB
3617             add_ldflags -EB
3618         ;;
3619         esac
3620         arch="mips"
3621     ;;
3622     parisc*|hppa*)
3623         arch="parisc"
3624     ;;
3625     "Power Macintosh"|ppc*|powerpc*)
3626         arch="ppc"
3627     ;;
3628     s390|s390x)
3629         arch="s390"
3630     ;;
3631     sh4|sh)
3632         arch="sh4"
3633     ;;
3634     sun4u|sparc*)
3635         arch="sparc"
3636     ;;
3637     tilegx|tile-gx)
3638         arch="tilegx"
3639     ;;
3640     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3641         arch="x86"
3642     ;;
3643 esac
3644
3645 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3646 enable $arch
3647
3648 # Add processor-specific flags
3649 if enabled aarch64; then
3650
3651     case $cpu in
3652         armv*)
3653             cpuflags="-march=$cpu"
3654         ;;
3655         *)
3656             cpuflags="-mcpu=$cpu"
3657         ;;
3658     esac
3659
3660 elif enabled alpha; then
3661
3662     cpuflags="-mcpu=$cpu"
3663
3664 elif enabled arm; then
3665
3666     check_arm_arch() {
3667         check_cpp_condition stddef.h \
3668             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3669             $cpuflags
3670     }
3671
3672     probe_arm_arch() {
3673         if   check_arm_arch 4;        then echo armv4
3674         elif check_arm_arch 4T;       then echo armv4t
3675         elif check_arm_arch 5;        then echo armv5
3676         elif check_arm_arch 5E;       then echo armv5e
3677         elif check_arm_arch 5T;       then echo armv5t
3678         elif check_arm_arch 5TE;      then echo armv5te
3679         elif check_arm_arch 5TEJ;     then echo armv5te
3680         elif check_arm_arch 6;        then echo armv6
3681         elif check_arm_arch 6J;       then echo armv6j
3682         elif check_arm_arch 6K;       then echo armv6k
3683         elif check_arm_arch 6Z;       then echo armv6z
3684         elif check_arm_arch 6ZK;      then echo armv6zk
3685         elif check_arm_arch 6T2;      then echo armv6t2
3686         elif check_arm_arch 7;        then echo armv7
3687         elif check_arm_arch 7A  7_A;  then echo armv7-a
3688         elif check_arm_arch 7S;       then echo armv7-a
3689         elif check_arm_arch 7R  7_R;  then echo armv7-r
3690         elif check_arm_arch 7M  7_M;  then echo armv7-m
3691         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3692         elif check_arm_arch 8A  8_A;  then echo armv8-a
3693         fi
3694     }
3695
3696     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3697
3698     case $cpu in
3699         armv*)
3700             cpuflags="-march=$cpu"
3701             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3702         ;;
3703         *)
3704             cpuflags="-mcpu=$cpu"
3705             case $cpu in
3706                 cortex-a*)                               subarch=armv7a  ;;
3707                 cortex-r*)                               subarch=armv7r  ;;
3708                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3709                 arm11*)                                  subarch=armv6   ;;
3710                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3711                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3712                 *)                             subarch=$(probe_arm_arch) ;;
3713             esac
3714         ;;
3715     esac
3716
3717     case "$subarch" in
3718         armv5t*)    enable fast_clz                ;;
3719         armv[6-8]*) enable fast_clz fast_unaligned ;;
3720     esac
3721
3722 elif enabled avr32; then
3723
3724     case $cpu in
3725         ap7[02]0[0-2])
3726             subarch="avr32_ap"
3727             cpuflags="-mpart=$cpu"
3728         ;;
3729         ap)
3730             subarch="avr32_ap"
3731             cpuflags="-march=$cpu"
3732         ;;
3733         uc3[ab]*)
3734             subarch="avr32_uc"
3735             cpuflags="-mcpu=$cpu"
3736         ;;
3737         uc)
3738             subarch="avr32_uc"
3739             cpuflags="-march=$cpu"
3740         ;;
3741     esac
3742
3743 elif enabled bfin; then
3744
3745     cpuflags="-mcpu=$cpu"
3746
3747 elif enabled mips; then
3748
3749     cpuflags="-march=$cpu"
3750
3751 elif enabled ppc; then
3752
3753     disable ldbrx
3754
3755     case $(tolower $cpu) in
3756         601|ppc601|powerpc601)
3757             cpuflags="-mcpu=601"
3758             disable altivec
3759         ;;
3760         603*|ppc603*|powerpc603*)
3761             cpuflags="-mcpu=603"
3762             disable altivec
3763         ;;
3764         604*|ppc604*|powerpc604*)
3765             cpuflags="-mcpu=604"
3766             disable altivec
3767         ;;
3768         g3|75*|ppc75*|powerpc75*)
3769             cpuflags="-mcpu=750"
3770             disable altivec
3771         ;;
3772         g4|745*|ppc745*|powerpc745*)
3773             cpuflags="-mcpu=7450"
3774             disable vsx
3775         ;;
3776         74*|ppc74*|powerpc74*)
3777             cpuflags="-mcpu=7400"
3778             disable vsx
3779         ;;
3780         g5|970|ppc970|powerpc970)
3781             cpuflags="-mcpu=970"
3782             disable vsx
3783         ;;
3784         power[3-6]*)
3785             cpuflags="-mcpu=$cpu"
3786             disable vsx
3787         ;;
3788         power[7-8]*)
3789             cpuflags="-mcpu=$cpu"
3790             enable ldbrx
3791         ;;
3792         cell)
3793             cpuflags="-mcpu=cell"
3794             enable ldbrx
3795             disable vsx
3796         ;;
3797         e500mc)
3798             cpuflags="-mcpu=e500mc"
3799             disable altivec
3800         ;;
3801         e500v2)
3802             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3803             disable altivec
3804             disable dcbzl
3805         ;;
3806         e500)
3807             cpuflags="-mcpu=8540 -mhard-float"
3808             disable altivec
3809             disable dcbzl
3810         ;;
3811     esac
3812
3813 elif enabled sparc; then
3814
3815     case $cpu in
3816         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3817             cpuflags="-mcpu=$cpu"
3818         ;;
3819         ultrasparc*|niagara[234])
3820             cpuflags="-mcpu=$cpu"
3821         ;;
3822     esac
3823
3824 elif enabled x86; then
3825
3826     case $cpu in
3827         i[345]86|pentium)
3828             cpuflags="-march=$cpu"
3829             disable i686
3830             disable mmx
3831         ;;
3832         # targets that do NOT support nopl and conditional mov (cmov)
3833         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3834             cpuflags="-march=$cpu"
3835             disable i686
3836         ;;
3837         # targets that do support nopl and conditional mov (cmov)
3838         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3839             cpuflags="-march=$cpu"
3840             enable i686
3841             enable fast_cmov
3842         ;;
3843         # targets that do support conditional mov but on which it's slow
3844         pentium4|pentium4m|prescott|nocona)
3845             cpuflags="-march=$cpu"
3846             enable i686
3847             disable fast_cmov
3848         ;;
3849     esac
3850
3851 fi
3852
3853 if [ "$cpu" != generic ]; then
3854     add_cflags  $cpuflags
3855     add_asflags $cpuflags
3856     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3857 fi
3858
3859 # compiler sanity check
3860 check_exec <<EOF
3861 int main(void){ return 0; }
3862 EOF
3863 if test "$?" != 0; then
3864     echo "$cc is unable to create an executable file."
3865     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3866         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3867         echo "Only do this if you know what cross compiling means."
3868     fi
3869     die "C compiler test failed."
3870 fi
3871
3872 add_cppflags -D_ISOC99_SOURCE
3873
3874 # some compilers silently accept -std=c11, so we also need to check that the
3875 # version macro is defined properly
3876 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3877     add_cflags -std=c11 ||
3878     check_cflags -std=c99
3879
3880 check_cppflags -D_FILE_OFFSET_BITS=64
3881 check_cppflags -D_LARGEFILE_SOURCE
3882
3883 add_host_cppflags -D_ISOC99_SOURCE
3884 check_host_cflags -std=c99
3885 check_host_cflags -Wall
3886 check_host_cflags $host_cflags_speed
3887
3888 check_64bit(){
3889     arch32=$1
3890     arch64=$2
3891     expr=$3
3892     check_code cc "" "int test[2*($expr) - 1]" &&
3893         subarch=$arch64 || subarch=$arch32
3894 }
3895
3896 case "$arch" in
3897     aarch64|alpha|ia64)
3898         spic=$shared
3899     ;;
3900     mips)
3901         check_64bit mips mips64 '_MIPS_SIM > 1'
3902         spic=$shared
3903     ;;
3904     parisc)
3905         check_64bit parisc parisc64 'sizeof(void *) > 4'
3906         spic=$shared
3907     ;;
3908     ppc)
3909         check_64bit ppc ppc64 'sizeof(void *) > 4'
3910         spic=$shared
3911     ;;
3912     s390)
3913         check_64bit s390 s390x 'sizeof(void *) > 4'
3914         spic=$shared
3915     ;;
3916     sparc)
3917         check_64bit sparc sparc64 'sizeof(void *) > 4'
3918         spic=$shared
3919     ;;
3920     x86)
3921         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3922         if test "$subarch" = "x86_64"; then
3923             spic=$shared
3924         fi
3925     ;;
3926 esac
3927
3928 enable $subarch
3929 enabled spic && enable_weak pic
3930
3931 enabled x86_64 && objformat=elf64 || objformat="elf32"
3932
3933 # OS specific
3934 case $target_os in
3935     aix)
3936         SHFLAGS=-shared
3937         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3938         enabled shared && add_ldflags -Wl,-brtl
3939         ;;
3940     android)
3941         disable symver
3942         enable section_data_rel_ro
3943         SLIB_INSTALL_NAME='$(SLIBNAME)'
3944         SLIB_INSTALL_LINKS=
3945         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3946         ;;
3947     haiku)
3948         prefix_default="/boot/common"
3949         network_extralibs="-lnetwork"
3950         host_extralibs=
3951         ;;
3952     sunos)
3953         SHFLAGS='-shared -Wl,-h,$$(@F)'
3954         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3955         network_extralibs="-lsocket -lnsl"
3956         # When using suncc to build, the Solaris linker will mark
3957         # an executable with each instruction set encountered by
3958         # the Solaris assembler.  As our libraries contain their own
3959         # guards for processor-specific code, instead suppress
3960         # generation of the HWCAPS ELF section on Solaris x86 only.
3961         enabled_all suncc x86 &&
3962             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3963             add_ldflags -Wl,-M,mapfile
3964         nm_default='nm -P -g'
3965         version_script='-M'
3966         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3967         ;;
3968     netbsd)
3969         disable symver
3970         oss_indev_extralibs="-lossaudio"
3971         oss_outdev_extralibs="-lossaudio"
3972         ;;
3973     openbsd|bitrig)
3974         disable symver
3975         SHFLAGS='-shared'
3976         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3977         SLIB_INSTALL_LINKS=
3978         oss_indev_extralibs="-lossaudio"
3979         oss_outdev_extralibs="-lossaudio"
3980         ;;
3981     dragonfly)
3982         disable symver
3983         ;;
3984     freebsd)
3985         ;;
3986     bsd/os)
3987         add_extralibs -lpoll -lgnugetopt
3988         ;;
3989     darwin)
3990         enabled ppc && add_asflags -force_cpusubtype_ALL
3991         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3992         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3993         add_ldflags -Wl,-dynamic,-search_paths_first
3994         check_cflags -Werror=partial-availability
3995         SLIBSUF=".dylib"
3996         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3997         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3998         enabled x86_64 && objformat="macho64" || objformat="macho32"
3999         enabled_any pic shared ||
4000             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4001         check_header dispatch/dispatch.h &&
4002             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4003         if test -n "$sysroot"; then
4004             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4005             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4006         fi
4007         ;;
4008     msys*)
4009         die "Native MSYS builds are discouraged, please use the MINGW environment."
4010         ;;
4011     mingw32*|mingw64*)
4012         if test $target_os = "mingw32ce"; then
4013             disable network
4014         else
4015             target_os=mingw32
4016         fi
4017         LIBTARGET=i386
4018         if enabled x86_64; then
4019             LIBTARGET="i386:x86-64"
4020         elif enabled arm; then
4021             LIBTARGET=arm-wince
4022         fi
4023         check_ldflags -Wl,--nxcompat
4024         check_ldflags -Wl,--dynamicbase
4025         shlibdir_default="$bindir_default"
4026         SLIBPREF=""
4027         SLIBSUF=".dll"
4028         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4029         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4030         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4031         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4032         SLIB_INSTALL_LINKS=
4033         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4034         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4035         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4036         enabled x86_64 && objformat="win64" || objformat="win32"
4037         dlltool="${cross_prefix}dlltool"
4038         ranlib=:
4039         enable dos_paths
4040         ;;
4041     win32|win64)
4042         disable symver
4043         if enabled shared; then
4044             # Link to the import library instead of the normal static library
4045             # for shared libs.
4046             LD_LIB='%.lib'
4047             # Cannot build both shared and static libs with MSVC or icl.
4048             disable static
4049         fi
4050         shlibdir_default="$bindir_default"
4051         SLIBPREF=""
4052         SLIBSUF=".dll"
4053         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4054         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4055         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4056         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4057         SLIB_INSTALL_LINKS=
4058         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4059         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4060         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4061         enabled x86_64 && objformat="win64" || objformat="win32"
4062         ranlib=:
4063         enable dos_paths
4064         ;;
4065     cygwin*)
4066         target_os=cygwin
4067         shlibdir_default="$bindir_default"
4068         SLIBPREF="cyg"
4069         SLIBSUF=".dll"
4070         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4071         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4072         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4073         SLIB_INSTALL_LINKS=
4074         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4075         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4076         enabled x86_64 && objformat="win64" || objformat="win32"
4077         enable dos_paths
4078         ;;
4079     *-dos|freedos|opendos)
4080         network_extralibs="-lsocket"
4081         objformat="coff"
4082         enable dos_paths
4083         add_cppflags -U__STRICT_ANSI__
4084         ;;
4085     linux)
4086         enable dv1394
4087         enable section_data_rel_ro
4088         ;;
4089     irix*)
4090         target_os=irix
4091         ranlib="echo ignoring ranlib"
4092         ;;
4093     os/2*)
4094         ln_s="cp -f"
4095         objformat="aout"
4096         add_cppflags -D_GNU_SOURCE
4097         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4098         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4099         LIBSUF="_s.a"
4100         SLIBPREF=""
4101         SLIBSUF=".dll"
4102         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4103         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4104         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4105             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4106             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4107             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4108             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4109         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4110             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4111         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4112         enable dos_paths
4113         ;;
4114     gnu/kfreebsd)
4115         add_cppflags -D_BSD_SOURCE
4116         ;;
4117     gnu)
4118         ;;
4119     qnx)
4120         add_cppflags -D_QNX_SOURCE
4121         network_extralibs="-lsocket"
4122         ;;
4123     symbian)
4124         SLIBSUF=".dll"
4125         enable dos_paths
4126         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4127         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4128         add_ldflags -Wl,--target1-abs,--no-undefined \
4129                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4130                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4131         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4132                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4133                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4134         ;;
4135     osf1)
4136         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4137         ;;
4138     minix)
4139         ;;
4140     none)
4141         ;;
4142     *)
4143         die "Unknown OS '$target_os'."
4144         ;;
4145 esac
4146
4147 # determine libc flavour
4148
4149 probe_libc(){
4150     pfx=$1
4151     pfx_no_=${pfx%_}
4152     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4153     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4154         eval ${pfx}libc_type=uclibc
4155         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4156     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4157         eval ${pfx}libc_type=glibc
4158         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4159     # MinGW headers can be installed on Cygwin, so check for newlib first.
4160     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4161         eval ${pfx}libc_type=newlib
4162         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4163     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4164     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4165         eval ${pfx}libc_type=mingw64
4166         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4167         eval test \$${pfx_no_}cc_type = "gcc" &&
4168             add_${pfx}cppflags -D__printf__=__gnu_printf__
4169     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4170          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4171         eval ${pfx}libc_type=mingw32
4172         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4173             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4174             die "ERROR: MinGW32 runtime version must be >= 3.15."
4175         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4176         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4177             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4178         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4179             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4180         eval test \$${pfx_no_}cc_type = "gcc" &&
4181             add_${pfx}cppflags -D__printf__=__gnu_printf__
4182     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4183         eval ${pfx}libc_type=msvcrt
4184         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4185             if [ "$pfx" = host_ ]; then
4186                 add_host_cppflags -Dsnprintf=_snprintf
4187             else
4188                 add_compat strtod.o strtod=avpriv_strtod
4189                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4190                                              _snprintf=avpriv_snprintf  \
4191                                              vsnprintf=avpriv_vsnprintf
4192             fi
4193         fi
4194         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4195         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4196         # 0x601 by default unless something else is set by the user.
4197         # This can easily lead to us detecting functions only present
4198         # in such new versions and producing binaries requiring windows 7.0.
4199         # Therefore explicitly set the default to XP unless the user has
4200         # set something else on the command line.
4201         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4202         # family. For these cases, configure is free to use any functions
4203         # found in the SDK headers by default. (Alternatively, we could force
4204         # _WIN32_WINNT to 0x0602 in that case.)
4205         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4206             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4207 #ifdef WINAPI_FAMILY
4208 #include <winapifamily.h>
4209 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4210 #error not desktop
4211 #endif
4212 #endif
4213 EOF
4214         if [ "$pfx" = "" ]; then
4215             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4216         fi
4217     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4218         eval ${pfx}libc_type=klibc
4219     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4220         eval ${pfx}libc_type=bionic
4221     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4222         eval ${pfx}libc_type=solaris
4223         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4224     else
4225         eval ${pfx}libc_type=default
4226         add_${pfx}cppflags -D_DEFAULT_SOURCE
4227     fi
4228 }
4229
4230 probe_libc
4231 test -n "$libc_type" && enable libc_$libc_type
4232 probe_libc host_
4233 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4234
4235 # hacks for compiler/libc/os combinations
4236
4237 case $libc_type in
4238     bionic)
4239         add_compat strtod.o strtod=avpriv_strtod
4240         ;;
4241     glibc)
4242         if enabled tms470; then
4243             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4244             add_cppflags -D__USER_LABEL_PREFIX__=
4245             add_cppflags -D__builtin_memset=memset
4246             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4247             add_cflags   -pds=48    # incompatible redefinition of macro
4248         elif enabled ccc; then
4249             add_ldflags -Wl,-z,now  # calls to libots crash without this
4250         fi
4251         ;;
4252 esac
4253
4254 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4255     add_cppflags '-I\$(SRC_PATH)/compat/float'
4256
4257 esc(){
4258     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4259 }
4260
4261 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4262
4263 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4264
4265 set_default $PATHS_LIST
4266 set_default nm
4267
4268 # we need to build at least one lib type
4269 if ! enabled_any static shared; then
4270     cat <<EOF
4271 At least one library type must be built.
4272 Specify --enable-static to build the static libraries or --enable-shared to
4273 build the shared libraries as well. To only build the shared libraries specify
4274 --disable-static in addition to --enable-shared.
4275 EOF
4276     exit 1
4277 fi
4278
4279 disabled optimizations || check_cflags -fomit-frame-pointer
4280
4281 enable_weak_pic() {
4282     disabled pic && return
4283     enable pic
4284     add_cppflags -DPIC
4285     case "$target_os" in
4286     mingw*|cygwin*)
4287         ;;
4288     *)
4289         add_cflags -fPIC
4290         ;;
4291     esac
4292     add_asflags  -fPIC
4293 }
4294
4295 enabled pic && enable_weak_pic
4296
4297 check_cc <<EOF || die "Symbol mangling check failed."
4298 int ff_extern;
4299 EOF
4300 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4301 extern_prefix=${sym%%ff_extern*}
4302
4303 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4304
4305 _restrict=
4306 for restrict_keyword in restrict __restrict__ __restrict; do
4307     check_cc <<EOF && _restrict=$restrict_keyword && break
4308 void foo(char * $restrict_keyword p);
4309 EOF
4310 done
4311
4312 check_cc <<EOF && enable pragma_deprecated
4313 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4314 EOF
4315
4316 check_cc <<EOF && enable attribute_packed
4317 struct { int x; } __attribute__((packed)) x;
4318 EOF
4319
4320 check_cc <<EOF && enable attribute_may_alias
4321 union { int x; } __attribute__((may_alias)) x;
4322 EOF
4323
4324 check_cc <<EOF || die "endian test failed"
4325 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4326 EOF
4327 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4328
4329 check_gas() {
4330     log "check_gas using '$as' as AS"
4331     # :vararg is used on aarch64, arm and ppc altivec
4332     check_as <<EOF || return 1
4333 .macro m n, y:vararg=0
4334 \n: .int \y
4335 .endm
4336 m x
4337 EOF
4338     # .altmacro is only used in arm asm
4339     ! enabled arm || check_as <<EOF || return 1
4340 .altmacro
4341 EOF
4342     enable gnu_as
4343     return 0
4344 }
4345
4346 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4347     nogas=:
4348     enabled_any arm aarch64 && nogas=die
4349     enabled_all ppc altivec && nogas=warn
4350     as_noop=-v
4351
4352     case $as_type in
4353         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4354         gcc)  gaspp_as_type=gas ;;
4355         *)    gaspp_as_type=$as_type ;;
4356     esac
4357
4358     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4359
4360     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4361         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4362
4363     if ! check_gas ; then
4364         as=${gas:=$as}
4365         check_gas || \
4366             $nogas "GNU assembler not found, install/update gas-preprocessor"
4367     fi
4368
4369     check_as <<EOF && enable as_func
4370 .func test
4371 .endfunc
4372 EOF
4373 fi
4374
4375 check_inline_asm inline_asm_labels '"1:\n"'
4376
4377 if enabled aarch64; then
4378     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4379     # internal assembler in clang 3.3 does not support this instruction
4380     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4381     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4382
4383     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4384
4385 elif enabled alpha; then
4386
4387     check_cflags -mieee
4388
4389 elif enabled arm; then
4390
4391     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4392     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4393     enabled thumb && check_cflags -mthumb || check_cflags -marm
4394
4395     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4396         enable vfp_args
4397     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4398         enable vfp_args
4399     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4400         case "${cross_prefix:-$cc}" in
4401             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4402             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4403 __asm__ (".eabi_attribute 28, 1");
4404 int main(void) { return 0; }
4405 EOF
4406         esac
4407         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4408     fi
4409
4410     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4411     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4412     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4413     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4414     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4415     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4416
4417     [ $target_os = linux ] || [ $target_os = android ] ||
4418         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4419             $ARCH_EXT_LIST_ARM
4420
4421     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4422
4423     check_as <<EOF && enable as_arch_directive
4424 .arch armv7-a
4425 EOF
4426     check_as <<EOF && enable as_fpu_directive
4427 .fpu neon
4428 EOF
4429
4430     # llvm's integrated assembler supports .object_arch from llvm 3.5
4431     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4432         check_as <<EOF && enable as_object_arch
4433 .object_arch armv4
4434 EOF
4435
4436     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4437
4438 elif enabled mips; then
4439
4440     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4441
4442     # make sure that only an instruction set is enabled
4443     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4444
4445     if enabled mips64; then
4446         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4447             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4448                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4449     else
4450         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4451             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4452                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4453     fi
4454
4455 elif enabled parisc; then
4456
4457     if enabled gcc; then
4458         case $($cc -dumpversion) in
4459             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4460         esac
4461     fi
4462
4463 elif enabled ppc; then
4464
4465     enable local_aligned_8 local_aligned_16 local_aligned_32
4466
4467     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4468     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4469     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4470     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4471
4472     if enabled altivec; then
4473         check_cflags -maltivec -mabi=altivec
4474
4475         # check if our compiler supports Motorola AltiVec C API
4476         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4477                                  vector signed int v2 = (vector signed int) { 1 };
4478                                  v1 = vec_add(v1, v2);" ||
4479             disable altivec
4480
4481         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4482     fi
4483
4484     if enabled vsx; then
4485         check_cflags -mvsx &&
4486         check_code cc altivec.h "int v[4] = { 0 };
4487                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4488             disable vsx
4489     fi
4490
4491     if enabled power8; then
4492         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4493     fi
4494
4495 elif enabled x86; then
4496
4497     check_builtin rdtsc    intrin.h   "__rdtsc()"
4498     check_builtin mm_empty mmintrin.h "_mm_empty()"
4499
4500     enable local_aligned_8 local_aligned_16 local_aligned_32
4501
4502     # check whether EBP is available on x86
4503     # As 'i' is stored on the stack, this program will crash
4504     # if the base pointer is used to access it because the
4505     # base pointer is cleared in the inline assembly code.
4506     check_exec_crash <<EOF && enable ebp_available
4507 volatile int i=0;
4508 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4509 return i;
4510 EOF
4511
4512     # check whether EBX is available on x86
4513     check_inline_asm ebx_available '""::"b"(0)' &&
4514         check_inline_asm ebx_available '"":::"%ebx"'
4515
4516     # check whether xmm clobbers are supported
4517     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4518
4519     # check whether binutils is new enough to compile SSSE3/MMXEXT
4520     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4521     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4522
4523     probe_x86asm(){
4524         x86asmexe_probe=$1
4525         if check_cmd $x86asmexe_probe -v; then
4526             x86asmexe=$x86asmexe_probe
4527             x86asm_type=nasm
4528             x86asm_debug="-g -F dwarf"
4529             X86ASMDEP=
4530             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4531         elif check_cmd $x86asmexe_probe --version; then
4532             x86asmexe=$x86asmexe_probe
4533             x86asm_type=yasm
4534             x86asm_debug="-g dwarf2"
4535             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4536             X86ASM_DEPFLAGS=
4537         fi
4538         check_x86asm "movbe ecx, [5]" && enable x86asm
4539     }
4540
4541     if ! disabled_any asm mmx x86asm; then
4542         disable x86asm
4543         for program in $x86asmexe nasm yasm; do
4544             probe_x86asm $program && break
4545         done
4546         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4547         X86ASMFLAGS="-f $objformat"
4548         enabled pic               && append X86ASMFLAGS "-DPIC"
4549         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4550         case "$objformat" in
4551             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4552         esac
4553
4554         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4555         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4556         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4557         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4558         check_x86asm "CPU amdnop"                      || disable cpunop
4559     fi
4560
4561     case "$cpu" in
4562         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4563             disable fast_clz
4564         ;;
4565     esac
4566
4567 fi
4568
4569 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4570
4571 check_ldflags -Wl,--as-needed
4572
4573 if ! disabled network; then
4574     check_func getaddrinfo $network_extralibs
4575     check_func inet_aton $network_extralibs
4576
4577     check_type netdb.h "struct addrinfo"
4578     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4579     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4580     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4581     check_type poll.h "struct pollfd"
4582     check_type netinet/sctp.h "struct sctp_event_subscribe"
4583     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4584     check_type netinet/in.h "struct sockaddr_in6"
4585     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4586     check_type "sys/types.h sys/socket.h" socklen_t
4587
4588     # Prefer arpa/inet.h over winsock2
4589     if check_header arpa/inet.h ; then
4590         check_func closesocket
4591     elif check_header winsock2.h ; then
4592         check_func_headers winsock2.h closesocket -lws2 &&
4593             network_extralibs="-lws2" ||
4594         { check_func_headers winsock2.h closesocket -lws2_32 &&
4595             network_extralibs="-lws2_32"; } || disable winsock2_h network
4596         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4597
4598         check_type ws2tcpip.h socklen_t
4599         check_type ws2tcpip.h "struct addrinfo"
4600         check_type ws2tcpip.h "struct group_source_req"
4601         check_type ws2tcpip.h "struct ip_mreq_source"
4602         check_type ws2tcpip.h "struct ipv6_mreq"
4603         check_type winsock2.h "struct pollfd"
4604         check_struct winsock2.h "struct sockaddr" sa_len
4605         check_type ws2tcpip.h "struct sockaddr_in6"
4606         check_type ws2tcpip.h "struct sockaddr_storage"
4607     else
4608         disable network
4609     fi
4610 fi
4611
4612 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4613 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4614 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4615 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4616
4617 case "$custom_allocator" in
4618     jemalloc)
4619         # jemalloc by default does not use a prefix
4620         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4621     ;;
4622     tcmalloc)
4623         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4624         malloc_prefix=tc_
4625     ;;
4626 esac
4627
4628 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4629 check_func  ${malloc_prefix}memalign            && enable memalign
4630 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4631
4632 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4633     { check_lib clock_gettime time.h clock_gettime ||
4634       check_lib clock_gettime time.h clock_gettime -lrt; }
4635
4636 check_func  fcntl
4637 check_func  fork
4638 check_func  gethrtime
4639 check_func  getopt
4640 check_func  getrusage
4641 check_func  gettimeofday
4642 check_func  gmtime_r
4643 check_func  isatty
4644 check_func  localtime_r
4645 check_func  mach_absolute_time
4646 check_func  mkstemp
4647 check_func  mmap
4648 check_func  mprotect
4649 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4650 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4651 check_func  sched_getaffinity
4652 check_func  setrlimit
4653 check_func  strerror_r
4654 check_func  sysconf
4655 check_func  sysctl
4656 check_func  usleep
4657
4658 check_func_headers io.h setmode
4659 check_func_headers stdlib.h getenv
4660
4661 check_func_headers windows.h GetProcessAffinityMask
4662 check_func_headers windows.h GetProcessTimes
4663 check_func_headers windows.h GetSystemTimeAsFileTime
4664 check_func_headers windows.h LoadLibrary
4665 check_func_headers windows.h MapViewOfFile
4666 check_func_headers windows.h SetConsoleTextAttribute
4667 check_func_headers windows.h Sleep
4668 check_func_headers windows.h VirtualAlloc
4669 check_struct windows.h "CONDITION_VARIABLE" Ptr
4670
4671 check_header d3d11.h
4672 check_header direct.h
4673 check_header dlfcn.h
4674 check_header dxgidebug.h
4675 check_header dxva.h
4676 check_header dxva2api.h
4677 check_header io.h
4678 check_header mach/mach_time.h
4679 check_header malloc.h
4680 check_header poll.h
4681 check_header sys/mman.h
4682 check_header sys/param.h
4683 check_header sys/resource.h
4684 check_header sys/select.h
4685 check_header sys/time.h
4686 check_header sys/un.h
4687 check_header unistd.h
4688 check_header valgrind/valgrind.h
4689 check_header VideoDecodeAcceleration/VDADecoder.h
4690 check_header windows.h
4691
4692 # it seems there are versions of clang in some distros that try to use the
4693 # gcc headers, which explodes for stdatomic
4694 # so we also check that atomics actually work here
4695 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4696
4697 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4698 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4699 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4700 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4701
4702 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4703
4704 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4705 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4706 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4707
4708 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4709 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4710 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4711
4712 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4713 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4714 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4715 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4716 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4717 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4718 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4719 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4720 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4721
4722 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4723
4724 if ! disabled w32threads && ! enabled pthreads; then
4725     check_lib w32threads "windows.h process.h" _beginthreadex
4726 fi
4727
4728 # check for some common methods of building with pthread support
4729 # do this before the optional library checks as some of them require pthreads
4730 if ! disabled pthreads && ! enabled w32threads; then
4731     if check_lib pthreads pthread.h pthread_join -pthread; then
4732         add_cflags -pthread
4733     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4734         add_cflags -pthreads
4735     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4736         :
4737     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4738         :
4739     elif check_func pthread_join; then
4740         enable pthreads
4741     fi
4742 fi
4743
4744 enabled pthreads &&
4745     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4746
4747 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4748 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4749
4750 # On some systems dynamic loading requires no extra linker flags
4751 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4752
4753 check_lib libm math.h sin -lm
4754
4755 atan2f_args=2
4756 ldexpf_args=2
4757 powf_args=2
4758
4759 for func in $MATH_FUNCS; do
4760     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4761 done
4762
4763 # these are off by default, so fail if requested and not available
4764 enabled avisynth          && require_header avisynth/avisynth_c.h
4765 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4766 enabled cuda              && require cuda cuda.h cuInit -lcuda
4767 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4768 enabled frei0r            && require_header frei0r.h
4769 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4770 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4771 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4772 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4773 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4774 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4775 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4776 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4777 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4778                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4779                                done || die "ERROR: libgsm not found"; }
4780 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4781 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4782 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4783 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4784 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4785 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4786 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4787 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4788 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4789 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4790 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4791                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4792 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4793 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4794 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4795 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4796 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4797 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4798 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4799 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4800 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4801 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4802 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4803 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4804                              { enabled libvpx_vp8_decoder &&
4805                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4806                                enabled libvpx_vp8_encoder &&
4807                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4808                                enabled libvpx_vp9_decoder &&
4809                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4810                                enabled libvpx_vp9_encoder &&
4811                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4812                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4813                                    die "libvpx enabled but no supported decoders/encoders found"
4814                              }
4815 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4816 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4817 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4818                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4819                              { check_cpp_condition x264.h "X264_MPEG2" &&
4820                                enable libx262; }
4821 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4822                              require_cpp_condition x265.h "X265_BUILD >= 57"
4823 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4824 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4825 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4826                                { ! enabled cross_compile &&
4827                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4828                                  add_ldflags -L/opt/vc/lib/ &&
4829                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4830                                die "ERROR: mmal not found" &&
4831                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4832 enabled omx               && require_header OMX_Core.h
4833 enabled omx_rpi           && { check_header OMX_Core.h ||
4834                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4835                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4836 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4837                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4838                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4839                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4840                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4841                                die "ERROR: openssl not found"; }
4842
4843 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4844
4845 if enabled nvenc; then
4846     require_header nvEncodeAPI.h
4847     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4848 fi
4849
4850 # SDL is "special" and adds some CFLAGS that should not pollute anything else.
4851 if enabled avplay; then
4852     CFLAGS_SAVE=$CFLAGS
4853     check_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent &&
4854     sdl_cflags=$pkg_cflags
4855     CFLAGS=$CFLAGS_SAVE
4856 fi
4857
4858 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4859 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4860
4861 check_header linux/fb.h
4862 check_header linux/videodev2.h
4863 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4864
4865 check_header AVFoundation/AVFoundation.h
4866
4867 check_header sys/videoio.h
4868
4869 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4870 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4871 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4872 # w32api 3.12 had it defined wrong
4873 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4874
4875 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4876 { check_header dev/bktr/ioctl_meteor.h &&
4877   check_header dev/bktr/ioctl_bt848.h; } ||
4878 { check_header machine/ioctl_meteor.h &&
4879   check_header machine/ioctl_bt848.h; } ||
4880 { check_header dev/video/meteor/ioctl_meteor.h &&
4881   check_header dev/video/bktr/ioctl_bt848.h; } ||
4882 check_header dev/ic/bt8xx.h
4883
4884 check_header sys/soundcard.h
4885 check_header soundcard.h
4886
4887 enabled_any alsa_indev alsa_outdev &&
4888     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4889
4890 enabled libjack &&
4891     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4892
4893 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4894
4895 if enabled libcdio; then
4896     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4897     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4898     die "ERROR: No usable libcdio/cdparanoia found"
4899 fi
4900
4901 if enabled libxcb; then
4902     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4903     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4904     disabled libxcb_shm ||
4905         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4906     disabled libxcb_xfixes ||
4907         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4908 fi
4909
4910 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4911 # the desktop api partition
4912 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4913 #ifdef WINAPI_FAMILY
4914 #include <winapifamily.h>
4915 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4916 #error desktop, not uwp
4917 #else
4918 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4919 #endif
4920 #else
4921 #error no family set
4922 #endif
4923 EOF
4924
4925 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4926
4927 enabled vaapi &&
4928     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4929     disable vaapi
4930
4931 enabled vaapi &&
4932     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4933
4934 enabled vaapi &&
4935     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4936
4937 enabled vdpau &&
4938     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4939     disable vdpau
4940
4941 enabled vdpau &&
4942     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4943
4944 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4945
4946 # add some useful compiler flags if supported
4947 check_cflags -Wdeclaration-after-statement
4948 check_cflags -Wall
4949 check_cflags -Wdisabled-optimization
4950 check_cflags -Wpointer-arith
4951 check_cflags -Wredundant-decls
4952 check_cflags -Wwrite-strings
4953 check_cflags -Wtype-limits
4954 check_cflags -Wundef
4955 check_cflags -Wmissing-prototypes
4956 check_cflags -Wstrict-prototypes
4957
4958 if enabled extra_warnings; then
4959     check_cflags -Wcast-qual
4960     check_cflags -Wextra
4961     check_cflags -Wpedantic
4962 fi
4963
4964 check_disable_warning(){
4965     warning_flag=-W${1#-Wno-}
4966     test_cflags $warning_flag && add_cflags $1
4967 }
4968
4969 check_disable_warning -Wno-parentheses
4970 check_disable_warning -Wno-switch
4971 check_disable_warning -Wno-format-zero-length
4972 check_disable_warning -Wno-pointer-sign
4973
4974 check_disable_warning_headers(){
4975     warning_flag=-W${1#-Wno-}
4976     test_cflags $warning_flag && add_cflags_headers $1
4977 }
4978
4979 check_disable_warning_headers -Wno-deprecated-declarations
4980 check_disable_warning_headers -Wno-unused-variable
4981
4982 check_objcflags -fobjc-arc && enable objc_arc
4983
4984 check_cc <<EOF && enable blocks_extension
4985 void (^block)(void);
4986 EOF
4987
4988 # add some linker flags
4989 check_ldflags -Wl,--warn-common
4990 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4991 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
4992 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4993
4994 # add some strip flags
4995 # -wN '..@*' is more selective than -x, but not available everywhere.
4996 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4997
4998 enabled neon_clobber_test &&
4999     check_ldflags -Wl,--wrap,avcodec_open2              \
5000                   -Wl,--wrap,avcodec_decode_audio4      \
5001                   -Wl,--wrap,avcodec_decode_video2      \
5002                   -Wl,--wrap,avcodec_decode_subtitle2   \
5003                   -Wl,--wrap,avcodec_encode_audio2      \
5004                   -Wl,--wrap,avcodec_encode_video2      \
5005                   -Wl,--wrap,avcodec_encode_subtitle    \
5006                   -Wl,--wrap,avcodec_send_packet        \
5007                   -Wl,--wrap,avcodec_receive_packet     \
5008                   -Wl,--wrap,avcodec_send_frame         \
5009                   -Wl,--wrap,avcodec_receive_frame      \
5010                   -Wl,--wrap,avresample_convert ||
5011     disable neon_clobber_test
5012
5013 enabled xmm_clobber_test &&
5014     check_ldflags -Wl,--wrap,avcodec_open2              \
5015                   -Wl,--wrap,avcodec_decode_audio4      \
5016                   -Wl,--wrap,avcodec_decode_video2      \
5017                   -Wl,--wrap,avcodec_decode_subtitle2   \
5018                   -Wl,--wrap,avcodec_encode_audio2      \
5019                   -Wl,--wrap,avcodec_encode_video2      \
5020                   -Wl,--wrap,avcodec_encode_subtitle    \
5021                   -Wl,--wrap,avcodec_send_packet        \
5022                   -Wl,--wrap,avcodec_receive_packet     \
5023                   -Wl,--wrap,avcodec_send_frame         \
5024                   -Wl,--wrap,avcodec_receive_frame      \
5025                   -Wl,--wrap,avresample_convert         \
5026                   -Wl,--wrap,sws_scale ||
5027     disable xmm_clobber_test
5028
5029 check_ld <<EOF && enable proper_dce
5030 extern const int array[512];
5031 static inline int func(void) { return array[0]; }
5032 int main(void) { return 0; }
5033 EOF
5034
5035 if enabled proper_dce; then
5036     echo "X { local: *; };" > $TMPV
5037     if test_ldflags -Wl,${version_script},$TMPV; then
5038         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
5039         check_cc <<EOF && enable symver_asm_label
5040 void ff_foo(void) __asm__ ("av_foo@VERSION");
5041 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5042 EOF
5043         check_cc <<EOF && enable symver_gnu_asm
5044 __asm__(".symver ff_foo,av_foo@VERSION");
5045 void ff_foo(void) {}
5046 EOF
5047     fi
5048 fi
5049
5050 if [ -z "$optflags" ]; then
5051     if enabled small; then
5052         optflags=$cflags_size
5053     elif enabled optimizations; then
5054         optflags=$cflags_speed
5055     else
5056         optflags=$cflags_noopt
5057     fi
5058 fi
5059
5060 check_optflags(){
5061     check_cflags "$@"
5062     enabled lto && check_ldflags "$@"
5063 }
5064
5065 check_optflags $optflags
5066 check_optflags -fno-math-errno
5067 check_optflags -fno-signed-zeros
5068
5069 if enabled lto; then
5070     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5071     check_cflags  -flto
5072     check_ldflags -flto $cpuflags
5073 fi
5074
5075 if enabled icc; then
5076     # Just warnings, no remarks
5077     check_cflags -w1
5078     # -wd: Disable following warnings
5079     # 144, 167, 556: -Wno-pointer-sign
5080     # 1292: attribute "foo" ignored
5081     # 1419: external declaration in primary source file
5082     # 10006: ignoring unknown option -fno-signed-zeros
5083     # 10148: ignoring unknown option -Wno-parentheses
5084     # 10156: ignoring option '-W'; no argument required
5085     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
5086     # 11030: Warning unknown option --as-needed
5087     # 10156: ignoring option '-export'; no argument required
5088     check_ldflags -wd10156,11030
5089     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5090     enable ebp_available
5091     if enabled x86_32; then
5092         icc_version=$($cc -dumpversion)
5093         test ${icc_version%%.*} -ge 11 &&
5094             check_cflags -falign-stack=maintain-16-byte ||
5095             disable aligned_stack
5096     fi
5097 elif enabled ccc; then
5098     # disable some annoying warnings
5099     add_cflags -msg_disable bitnotint
5100     add_cflags -msg_disable mixfuncvoid
5101     add_cflags -msg_disable nonstandcast
5102     add_cflags -msg_disable unsupieee
5103 elif enabled gcc; then
5104     check_optflags -fno-tree-vectorize
5105     check_cflags -Werror=implicit-function-declaration
5106     check_cflags -Werror=missing-prototypes
5107     check_cflags -Werror=return-type
5108     check_cflags -Werror=declaration-after-statement
5109     check_cflags -Werror=vla
5110     check_cflags -Werror=format-security
5111     check_cflags -fdiagnostics-color=auto
5112     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5113 elif enabled llvm_gcc; then
5114     check_cflags -mllvm -stack-alignment=16
5115 elif enabled clang; then
5116     check_cflags -mllvm -stack-alignment=16
5117     check_cflags -Qunused-arguments
5118     check_cflags -Werror=implicit-function-declaration
5119     check_cflags -Werror=missing-prototypes
5120     check_cflags -Werror=return-type
5121 elif enabled cparser; then
5122     add_cflags -Wno-missing-variable-declarations
5123     add_cflags -Wno-empty-statement
5124 elif enabled armcc; then
5125     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5126     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5127     # 2523: use of inline assembly is deprecated
5128     add_cflags -W${armcc_opt},--diag_suppress=2523
5129     add_cflags -W${armcc_opt},--diag_suppress=1207
5130     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5131     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5132     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5133     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5134 elif enabled tms470; then
5135     add_cflags -pds=824 -pds=837
5136     disable inline_asm
5137 elif enabled pathscale; then
5138     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5139     disable inline_asm
5140 elif enabled_any msvc icl; then
5141     enabled x86_32 && disable aligned_stack
5142     enabled_all x86_32 debug && add_cflags -Oy-
5143     enabled debug && add_ldflags -debug
5144     enable pragma_deprecated
5145     if enabled icl; then
5146         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5147         # (correctly) on icl 13.x.
5148         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5149             add_cflags -Qansi-alias
5150         # icl will pass the inline asm tests but inline asm is currently
5151         # not supported (build will fail)
5152         disable inline_asm
5153     fi
5154     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5155     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5156     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5157     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5158     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5159     # MSVC 2013 and newer can handle it fine.
5160     # If this declspec fails, force including stdlib.h before the restrict redefinition
5161     # happens in config.h.
5162     if [ $_restrict != restrict ]; then
5163         check_cc <<EOF || add_cflags -FIstdlib.h
5164 __declspec($_restrict) void* foo(int);
5165 EOF
5166     fi
5167 fi
5168
5169 for pfx in "" host_; do
5170     varname=${pfx%_}cc_type
5171     eval "type=\$$varname"
5172     if [ "$type" = "msvc" ]; then
5173         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5174 static inline int foo(int a) { return a; }
5175 EOF
5176     fi
5177 done
5178
5179 case $as_type in
5180     clang)
5181         add_asflags -Qunused-arguments
5182     ;;
5183 esac
5184
5185 case $ld_type in
5186     clang)
5187         check_ldflags -Qunused-arguments
5188     ;;
5189 esac
5190
5191 case $target_os in
5192     osf1)
5193         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5194     ;;
5195 esac
5196
5197 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5198
5199 check_deps $CONFIG_LIST       \
5200            $CONFIG_EXTRA      \
5201            $HAVE_LIST         \
5202            $ALL_COMPONENTS    \
5203
5204 flatten_extralibs(){
5205     unset nested_entries
5206     list_name=$1
5207     eval list=\$${1}
5208     for entry in $list; do
5209         entry_copy=$entry
5210         resolve entry_copy
5211         append nested_entries $(filter '*_extralibs' $entry_copy)
5212         flat_entries=$(filter_out '*_extralibs' $entry_copy)
5213         eval $entry="\$flat_entries"
5214     done
5215     append $list_name "$nested_entries"
5216
5217     resolve nested_entries
5218     if test -n "$(filter '*_extralibs' $nested_entries)"; then
5219         flatten_extralibs $list_name
5220     fi
5221 }
5222
5223 for linkunit in $LIBRARY_LIST; do
5224     unset current_extralibs
5225     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
5226     for comp in ${components}; do
5227         enabled $comp || continue
5228         comp_extralibs="${comp}_extralibs"
5229         append current_extralibs $comp_extralibs
5230     done
5231     eval prepend ${linkunit}_extralibs $current_extralibs
5232 done
5233
5234 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5235     flatten_extralibs ${linkunit}_extralibs
5236     unique  ${linkunit}_extralibs
5237     resolve ${linkunit}_extralibs
5238     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
5239 done
5240
5241 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5242
5243 for thread in $THREADS_LIST; do
5244     if enabled $thread; then
5245         test -n "$thread_type" &&
5246             die "ERROR: Only one thread type must be selected." ||
5247             thread_type="$thread"
5248     fi
5249 done
5250
5251 if disabled stdatomic_h; then
5252     if enabled atomics_gcc; then
5253         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
5254     elif enabled atomics_win32; then
5255         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
5256     elif enabled atomics_suncc; then
5257         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
5258     elif enabled pthreads; then
5259         add_compat atomics/pthread/stdatomic.o
5260         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
5261     else
5262         enabled threads && die "Threading is enabled, but no atomics are available"
5263         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
5264     fi
5265 fi
5266
5267 enabled zlib && add_cppflags -DZLIB_CONST
5268
5269 # conditional library dependencies, in linking order
5270 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5271 enabled_any asyncts_filter resample_filter &&
5272                            prepend avfilter_deps "avresample"
5273 enabled scale_filter    && prepend avfilter_deps "swscale"
5274
5275 enabled opus_decoder    && prepend avcodec_deps "avresample"
5276
5277 expand_deps(){
5278     lib_deps=${1}_deps
5279     eval "deps=\$$lib_deps"
5280     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5281     unique $lib_deps
5282 }
5283
5284 map 'expand_deps $v' $LIBRARY_LIST
5285
5286 if test "$quiet" != "yes"; then
5287
5288 echo "install prefix            $prefix"
5289 echo "source path               $source_path"
5290 echo "C compiler                $cc"
5291 echo "C library                 $libc_type"
5292 if test "$host_cc" != "$cc"; then
5293     echo "host C compiler           $host_cc"
5294     echo "host C library            $host_libc_type"
5295 fi
5296 echo "ARCH                      $arch ($cpu)"
5297 if test "$extra_version" != ""; then
5298     echo "version string suffix     $extra_version"
5299 fi
5300 echo "big-endian                ${bigendian-no}"
5301 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5302 if enabled x86; then
5303     echo "standalone assembly       ${x86asm-no}"
5304     echo "x86 assembler             ${x86asmexe}"
5305     echo "MMX enabled               ${mmx-no}"
5306     echo "MMXEXT enabled            ${mmxext-no}"
5307     echo "3DNow! enabled            ${amd3dnow-no}"
5308     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5309     echo "SSE enabled               ${sse-no}"
5310     echo "SSSE3 enabled             ${ssse3-no}"
5311     echo "AVX enabled               ${avx-no}"
5312     echo "XOP enabled               ${xop-no}"
5313     echo "FMA3 enabled              ${fma3-no}"
5314     echo "FMA4 enabled              ${fma4-no}"
5315     echo "i686 features enabled     ${i686-no}"
5316     echo "CMOV is fast              ${fast_cmov-no}"
5317     echo "EBX available             ${ebx_available-no}"
5318     echo "EBP available             ${ebp_available-no}"
5319 fi
5320 if enabled aarch64; then
5321     echo "NEON enabled              ${neon-no}"
5322     echo "VFP enabled               ${vfp-no}"
5323 fi
5324 if enabled arm; then
5325     echo "ARMv5TE enabled           ${armv5te-no}"
5326     echo "ARMv6 enabled             ${armv6-no}"
5327     echo "ARMv6T2 enabled           ${armv6t2-no}"
5328     echo "VFP enabled               ${vfp-no}"
5329     echo "NEON enabled              ${neon-no}"
5330 fi
5331 if enabled ppc; then
5332     echo "AltiVec enabled           ${altivec-no}"
5333     echo "VSX enabled               ${vsx-no}"
5334     echo "POWER8 enabled            ${power8-no}"
5335     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5336     echo "dcbzl available           ${dcbzl-no}"
5337 fi
5338 echo "debug symbols             ${debug-no}"
5339 echo "optimize for size         ${small-no}"
5340 echo "optimizations             ${optimizations-no}"
5341 echo "static                    ${static-no}"
5342 echo "shared                    ${shared-no}"
5343 echo "network support           ${network-no}"
5344 echo "threading support         ${thread_type-no}"
5345 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5346 test -n "$random_seed" &&
5347     echo "random seed               ${random_seed}"
5348 echo
5349
5350 echo "External libraries:"
5351 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5352 echo
5353 echo "External libraries providing hardware acceleration:"
5354 print_enabled '' $HWACCEL_LIBRARY_LIST | print_3_columns
5355 echo
5356
5357 echo "Libraries:"
5358 print_enabled '' $LIBRARY_LIST | print_3_columns
5359 echo
5360
5361 echo "Programs:"
5362 print_enabled '' $PROGRAM_LIST | print_3_columns
5363 echo
5364
5365 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5366     echo "Enabled ${type}s:"
5367     eval list=\$$(toupper $type)_LIST
5368     print_enabled '_*' $list | print_3_columns
5369     echo
5370 done
5371
5372 if test -n "$ignore_tests"; then
5373     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
5374     echo "Ignored FATE tests:"
5375     echo $ignore_tests | print_3_columns
5376     echo
5377 fi
5378
5379 license="LGPL version 2.1 or later"
5380 if enabled nonfree; then
5381     license="nonfree and unredistributable"
5382 elif enabled gplv3; then
5383     license="GPL version 3 or later"
5384 elif enabled lgplv3; then
5385     license="LGPL version 3 or later"
5386 elif enabled gpl; then
5387     license="GPL version 2 or later"
5388 fi
5389
5390 echo "License: $license"
5391
5392 echo "Creating configuration files ..."
5393
5394 fi # test "$quiet" != "yes"
5395
5396 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5397
5398 config_files="$TMPH avbuild/config.mak"
5399
5400 cat > avbuild/config.mak <<EOF
5401 # Automatically generated by configure - do not modify!
5402 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
5403 prefix=$prefix
5404 LIBDIR=\$(DESTDIR)$libdir
5405 SHLIBDIR=\$(DESTDIR)$shlibdir
5406 INCDIR=\$(DESTDIR)$incdir
5407 BINDIR=\$(DESTDIR)$bindir
5408 DATADIR=\$(DESTDIR)$datadir
5409 DOCDIR=\$(DESTDIR)$docdir
5410 MANDIR=\$(DESTDIR)$mandir
5411 SRC_PATH=$source_path
5412 CC_IDENT=$cc_ident
5413 ARCH=$arch
5414 INTRINSICS=$intrinsics
5415 CC=$cc
5416 AS=$as
5417 OBJCC=$objcc
5418 LD=$ld
5419 DEPCC=$dep_cc
5420 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5421 DEPAS=$as
5422 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5423 X86ASM=$x86asmexe
5424 DEPX86ASM=$x86asmexe
5425 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
5426 AR=$ar
5427 ARFLAGS=$arflags
5428 AR_O=$ar_o
5429 RANLIB=$ranlib
5430 STRIP=$strip
5431 LN_S=$ln_s
5432 CPPFLAGS=$CPPFLAGS
5433 CFLAGS=$CFLAGS
5434 OBJCFLAGS=$OBJCFLAGS
5435 ASFLAGS=$ASFLAGS
5436 AS_C=$AS_C
5437 AS_O=$AS_O
5438 OBJCC_C=$OBJCC_C
5439 OBJCC_E=$OBJCC_E
5440 OBJCC_O=$OBJCC_O
5441 CC_C=$CC_C
5442 CC_E=$CC_E
5443 CC_O=$CC_O
5444 X86ASM_O=$X86ASM_O
5445 LD_O=$LD_O
5446 LD_LIB=$LD_LIB
5447 LD_PATH=$LD_PATH
5448 DLLTOOL=$dlltool
5449 LDFLAGS=$LDFLAGS
5450 LDEXEFLAGS=$LDEXEFLAGS
5451 LDSOFLAGS=$LDSOFLAGS
5452 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5453 STRIPFLAGS=$STRIPFLAGS
5454 X86ASMFLAGS=$X86ASMFLAGS
5455 LIBPREF=$LIBPREF
5456 LIBSUF=$LIBSUF
5457 LIBNAME=$LIBNAME
5458 SLIBPREF=$SLIBPREF
5459 SLIBSUF=$SLIBSUF
5460 EXESUF=$EXESUF
5461 EXTRA_VERSION=$extra_version
5462 CCDEP=$CCDEP
5463 CCDEP_FLAGS=$CCDEP_FLAGS
5464 ASDEP=$ASDEP
5465 ASDEP_FLAGS=$ASDEP_FLAGS
5466 X86ASMDEP=$X86ASMDEP
5467 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
5468 CC_DEPFLAGS=$CC_DEPFLAGS
5469 AS_DEPFLAGS=$AS_DEPFLAGS
5470 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
5471 HOSTCC=$host_cc
5472 HOSTLD=$host_ld
5473 HOSTCFLAGS=$host_cflags
5474 HOSTCPPFLAGS=$host_cppflags
5475 HOSTEXESUF=$HOSTEXESUF
5476 HOSTLDFLAGS=$host_ldflags
5477 HOSTEXTRALIBS=$host_extralibs
5478 DEPHOSTCC=$host_cc
5479 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5480 HOSTCCDEP=$HOSTCCDEP
5481 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5482 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5483 HOSTCC_C=$HOSTCC_C
5484 HOSTCC_O=$HOSTCC_O
5485 HOSTLD_O=$HOSTLD_O
5486 TARGET_EXEC=$target_exec $target_exec_args
5487 TARGET_PATH=$target_path
5488 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5489 CFLAGS-avplay=$sdl_cflags
5490 CFLAGS_HEADERS=$CFLAGS_HEADERS
5491 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5492 EXTRALIBS=$extralibs
5493 COMPAT_OBJS=$compat_objs
5494 INSTALL=install
5495 LIBTARGET=${LIBTARGET}
5496 SLIBNAME=${SLIBNAME}
5497 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5498 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5499 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5500 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5501 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5502 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5503 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5504 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5505 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
5506 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
5507 IGNORE_TESTS=$ignore_tests
5508 EOF
5509
5510 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> avbuild/config.mak' $LIBRARY_LIST
5511
5512 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5513     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> avbuild/config.mak
5514 done
5515
5516 cat > $TMPH <<EOF
5517 /* Automatically generated by configure - do not modify! */
5518 #ifndef LIBAV_CONFIG_H
5519 #define LIBAV_CONFIG_H
5520 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
5521 #define LIBAV_LICENSE "$(c_escape $license)"
5522 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5523 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5524 #define restrict $_restrict
5525 #define EXTERN_PREFIX "${extern_prefix}"
5526 #define EXTERN_ASM ${extern_prefix}
5527 #define SLIBSUF "$SLIBSUF"
5528 EOF
5529
5530 test -n "$malloc_prefix" &&
5531     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5532
5533 if enabled x86asm; then
5534     append config_files $TMPASM
5535     printf '' >$TMPASM
5536 fi
5537
5538 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5539
5540 print_config ARCH_   "$config_files" $ARCH_LIST
5541 print_config HAVE_   "$config_files" $HAVE_LIST
5542 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5543                                      $CONFIG_EXTRA      \
5544                                      $ALL_COMPONENTS    \
5545
5546 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
5547
5548 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5549 cp_if_changed $TMPH config.h
5550 touch avbuild/.config
5551
5552 enabled x86asm && cp_if_changed $TMPASM config.asm
5553
5554 cat > $TMPH <<EOF
5555 /* Generated by ffconf */
5556 #ifndef AVUTIL_AVCONFIG_H
5557 #define AVUTIL_AVCONFIG_H
5558 EOF
5559
5560 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5561
5562 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5563
5564 cp_if_changed $TMPH libavutil/avconfig.h
5565
5566 # generate the lists of enabled components
5567 print_enabled_components(){
5568     file=$1
5569     struct_name=$2
5570     name=$3
5571     shift 3
5572     echo "static const $struct_name * const $name[] = {" > $TMPH
5573     for c in $*; do
5574         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
5575     done
5576     echo "    NULL };" >> $TMPH
5577     cp_if_changed $TMPH $file
5578 }
5579
5580 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
5581 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
5582
5583 test -n "$WARNINGS" && printf "\n$WARNINGS"
5584
5585 # Settings for pkg-config files
5586
5587 cat > avbuild/config.sh <<EOF
5588 # Automatically generated by configure - do not modify!
5589 shared=$shared
5590 prefix=$prefix
5591 libdir=$libdir
5592 incdir=$incdir
5593 source_path=${source_path}
5594 LIBPREF=${LIBPREF}
5595 LIBSUF=${LIBSUF}
5596 extralibs_avutil="$avutil_extralibs"
5597 extralibs_avcodec="$avcodec_extralibs"
5598 extralibs_avformat="$avformat_extralibs"
5599 extralibs_avdevice="$avdevice_extralibs"
5600 extralibs_avfilter="$avfilter_extralibs"
5601 extralibs_avresample="$avresample_extralibs"
5602 extralibs_swscale="$swscale_extralibs"
5603 EOF
5604
5605 for lib in $LIBRARY_LIST; do
5606     lib_deps="$(eval echo \$${lib}_deps)"
5607     echo ${lib}_deps=\"$lib_deps\" >> avbuild/config.sh
5608 done