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-d3d11va Microsoft Direct3D 11 video acceleration [auto]
 241   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
 242   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
 243   --enable-libnpp  Nvidia CUDA processing
 244   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
 245   --enable-nvenc   Nvidia video encoding
 246   --enable-omx     OpenMAX IL
 247   --enable-omx-rpi OpenMAX IL for Raspberry Pi
 248   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
 249   --enable-vda     Apple Video Decode Acceleration [auto]
 250   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
 251
 252 Toolchain options:
 253   --arch=ARCH              select architecture [$arch]
 254   --cpu=CPU                select the minimum required CPU (affects
 255                            instruction selection, may crash on older CPUs)
 256   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 257   --enable-cross-compile   assume a cross-compiler is used
 258   --sysroot=PATH           root of cross-build tree
 259   --sysinclude=PATH        location of cross-build system headers
 260   --target-os=OS           compiler targets OS [$target_os]
 261   --target-exec=CMD        command to run executables on target
 262   --target-path=DIR        path to view of build directory on target
 263   --target-samples=DIR     path to samples directory on target
 264   --toolchain=NAME         set tool defaults according to NAME
 265   --nm=NM                  use nm tool
 266   --ar=AR                  use archive tool AR [$ar_default]
 267   --as=AS                  use assembler AS [$as_default]
 268   --cc=CC                  use C compiler CC [$cc_default]
 269   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 270   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 271   --ld=LD                  use linker LD
 272   --x86asmexe=X86ASM       use x86 assembler X86ASM
 273   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 274   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 275   --host-cc=HOSTCC         use host C compiler HOSTCC
 276   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 277   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 278   --host-ld=HOSTLD         use host linker HOSTLD
 279   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 280   --host-libs=HLIBS        use libs HLIBS when linking for host
 281   --host-os=OS             compiler host OS [$target_os]
 282   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 283   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 284   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 285   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 286   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 287   --extra-version=STRING   version string suffix []
 288   --optflags=OPTFLAGS      override optimization-related compiler flags
 289   --enable-pic             build position-independent code
 290   --enable-thumb           compile for Thumb instruction set
 291   --enable-lto             use link-time optimization
 292   --env="ENV=override"     override the environment variables
 293
 294 Advanced options (experts only):
 295   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 296   --custom-allocator=NAME  use a supported custom allocator
 297   --disable-symver         disable symbol versioning
 298   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 299   --disable-safe-bitstream-reader
 300                            disable buffer boundary checking in bitreaders
 301                            (faster, but may crash)
 302   --enable-sram            allow use of on-chip SRAM
 303
 304 Optimization options (experts only):
 305   --disable-asm            disable all assembly optimizations
 306   --disable-altivec        disable AltiVec optimizations
 307   --disable-vsx            disable VSX optimizations
 308   --disable-power8         disable POWER8 optimizations
 309   --disable-amd3dnow       disable 3DNow! optimizations
 310   --disable-amd3dnowext    disable 3DNow! extended optimizations
 311   --disable-mmx            disable MMX optimizations
 312   --disable-mmxext         disable MMXEXT optimizations
 313   --disable-sse            disable SSE optimizations
 314   --disable-sse2           disable SSE2 optimizations
 315   --disable-sse3           disable SSE3 optimizations
 316   --disable-ssse3          disable SSSE3 optimizations
 317   --disable-sse4           disable SSE4 optimizations
 318   --disable-sse42          disable SSE4.2 optimizations
 319   --disable-avx            disable AVX optimizations
 320   --disable-xop            disable XOP optimizations
 321   --disable-fma3           disable FMA3 optimizations
 322   --disable-fma4           disable FMA4 optimizations
 323   --disable-avx2           disable AVX2 optimizations
 324   --disable-armv5te        disable armv5te optimizations
 325   --disable-armv6          disable armv6 optimizations
 326   --disable-armv6t2        disable armv6t2 optimizations
 327   --disable-vfp            disable VFP optimizations
 328   --disable-neon           disable NEON optimizations
 329   --disable-inline-asm     disable use of inline assembly
 330   --disable-x86asm         disable use of standalone x86 assembly
 331
 332 Developer options (useful when working on Libav itself):
 333   --disable-debug          disable debugging symbols
 334   --enable-debug=LEVEL     set the debug level [$debuglevel]
 335   --disable-optimizations  disable compiler optimizations
 336   --enable-extra-warnings  enable more compiler warnings
 337   --samples=PATH           location of test samples for FATE, if not set use
 338                            \$LIBAV_SAMPLES at make invocation time.
 339   --enable-neon-clobber-test check NEON registers for clobbering (should be
 340                            used only for debugging purposes)
 341   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 342                            should be used only for debugging purposes)
 343   --enable-random          randomly enable/disable components
 344   --disable-random
 345   --enable-random=LIST     randomly enable/disable specific components or
 346   --disable-random=LIST    component groups. LIST is a comma-separated list
 347                            of NAME[:PROB] entries where NAME is a component
 348                            (group) and PROB the probability associated with
 349                            NAME (default 0.5).
 350   --random-seed=VALUE      seed value for --enable/disable-random
 351   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 352                            (only applies to --disable-optimizations builds)
 353   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 354                            in the name) of tests whose result is ignored
 355
 356 NOTE: Object files are built at the place where configure is launched.
 357 EOF
 358   exit 0
 359 }
 360
 361 quotes='""'
 362
 363 log(){
 364     echo "$@" >> $logfile
 365 }
 366
 367 log_file(){
 368     log BEGIN $1
 369     i=1
 370     while read line; do
 371         printf '%5s   %s\n' "${i}" "${line}"
 372         i=$(($i+1))
 373     done < $1 >> $logfile
 374     log END $1
 375 }
 376
 377 echolog(){
 378     log "$@"
 379     echo "$@"
 380 }
 381
 382 warn(){
 383     log "WARNING: $*"
 384     WARNINGS="${WARNINGS}WARNING: $*\n"
 385 }
 386
 387 die(){
 388     echolog "$@"
 389     cat <<EOF
 390
 391 If you think configure made a mistake, make sure you are using the latest
 392 version from Git.  If the latest version fails, report the problem to the
 393 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 394 EOF
 395     if disabled logging; then
 396         cat <<EOF
 397 Rerun configure with logging enabled (do not use --disable-logging), and
 398 include the log this produces with your report.
 399 EOF
 400     else
 401         cat <<EOF
 402 Include the log file "$logfile" produced by configure as this will help
 403 solving the problem.
 404 EOF
 405     fi
 406     exit 1
 407 }
 408
 409 # Avoid locale weirdness, besides we really just want to translate ASCII.
 410 toupper(){
 411     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 412 }
 413
 414 tolower(){
 415     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 416 }
 417
 418 c_escape(){
 419     echo "$*" | sed 's/["\\]/\\\0/g'
 420 }
 421
 422 sh_quote(){
 423     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 424     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 425     echo "$v"
 426 }
 427
 428 cleanws(){
 429     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 430 }
 431
 432 filter(){
 433     pat=$1
 434     shift
 435     for v; do
 436         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 437     done
 438 }
 439
 440 filter_out(){
 441     pat=$1
 442     shift
 443     for v; do
 444         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 445     done
 446 }
 447
 448 map(){
 449     m=$1
 450     shift
 451     for v; do eval $m; done
 452 }
 453
 454 add_suffix(){
 455     suffix=$1
 456     shift
 457     for v; do echo ${v}${suffix}; done
 458 }
 459
 460 set_all(){
 461     value=$1
 462     shift
 463     for var in $*; do
 464         eval $var=$value
 465     done
 466 }
 467
 468 set_weak(){
 469     value=$1
 470     shift
 471     for var; do
 472         eval : \${$var:=$value}
 473     done
 474 }
 475
 476 sanitize_var_name(){
 477     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 478 }
 479
 480 set_sanitized(){
 481     var=$1
 482     shift
 483     eval $(sanitize_var_name "$var")='$*'
 484 }
 485
 486 get_sanitized(){
 487     eval echo \$$(sanitize_var_name "$1")
 488 }
 489
 490 pushvar(){
 491     for pvar in $*; do
 492         eval level=\${${pvar}_level:=0}
 493         eval ${pvar}_${level}="\$$pvar"
 494         eval ${pvar}_level=$(($level+1))
 495     done
 496 }
 497
 498 popvar(){
 499     for pvar in $*; do
 500         eval level=\${${pvar}_level:-0}
 501         test $level = 0 && continue
 502         eval level=$(($level-1))
 503         eval $pvar="\${${pvar}_${level}}"
 504         eval ${pvar}_level=$level
 505         eval unset ${pvar}_${level}
 506     done
 507 }
 508
 509 enable(){
 510     set_all yes $*
 511 }
 512
 513 disable(){
 514     set_all no $*
 515 }
 516
 517 enable_weak(){
 518     set_weak yes $*
 519 }
 520
 521 disable_weak(){
 522     set_weak no $*
 523 }
 524
 525 enable_sanitized(){
 526     for var; do
 527         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 528     done
 529 }
 530
 531 disable_sanitized(){
 532     for var; do
 533         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 534     done
 535 }
 536
 537 do_enable_deep(){
 538     for var; do
 539         enabled $var && continue
 540         eval sel="\$${var}_select"
 541         eval sgs="\$${var}_suggest"
 542         pushvar var sgs
 543         enable_deep $sel
 544         popvar sgs
 545         enable_deep_weak $sgs
 546         popvar var
 547     done
 548 }
 549
 550 enable_deep(){
 551     do_enable_deep $*
 552     enable $*
 553 }
 554
 555 enable_deep_weak(){
 556     for var; do
 557         disabled $var && continue
 558         pushvar var
 559         do_enable_deep $var
 560         popvar var
 561         enable_weak $var
 562     done
 563 }
 564
 565 enabled(){
 566     test "${1#!}" = "$1" && op== || op=!=
 567     eval test "x\$${1#!}" $op "xyes"
 568 }
 569
 570 disabled(){
 571     test "${1#!}" = "$1" && op== || op=!=
 572     eval test "x\$${1#!}" $op "xno"
 573 }
 574
 575 enabled_all(){
 576     for opt; do
 577         enabled $opt || return 1
 578     done
 579 }
 580
 581 disabled_all(){
 582     for opt; do
 583         disabled $opt || return 1
 584     done
 585 }
 586
 587 enabled_any(){
 588     for opt; do
 589         enabled $opt && return 0
 590     done
 591 }
 592
 593 disabled_any(){
 594     for opt; do
 595         disabled $opt && return 0
 596     done
 597     return 1
 598 }
 599
 600 set_default(){
 601     for opt; do
 602         eval : \${$opt:=\$${opt}_default}
 603     done
 604 }
 605
 606 is_in(){
 607     value=$1
 608     shift
 609     for var in $*; do
 610         [ $var = $value ] && return 0
 611     done
 612     return 1
 613 }
 614
 615 check_deps(){
 616     for cfg; do
 617         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 618         disabled ${cfg}_checking && continue
 619         enable ${cfg}_checking
 620         append allopts $cfg
 621
 622         eval dep_all="\$${cfg}_deps"
 623         eval dep_any="\$${cfg}_deps_any"
 624         eval dep_con="\$${cfg}_conflict"
 625         eval dep_sel="\$${cfg}_select"
 626         eval dep_sgs="\$${cfg}_suggest"
 627         eval dep_ifa="\$${cfg}_if"
 628         eval dep_ifn="\$${cfg}_if_any"
 629
 630         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 631         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 632         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 633
 634         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 635         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 636         enabled_all  $dep_all || disable $cfg
 637         enabled_any  $dep_any || disable $cfg
 638         disabled_all $dep_con || disable $cfg
 639         disabled_any $dep_sel && disable $cfg
 640
 641         if enabled $cfg; then
 642             enable_deep $dep_sel
 643             enable_deep_weak $dep_sgs
 644             for dep in $dep_all $dep_any $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         fi
 650
 651         disable ${cfg}_checking
 652     done
 653 }
 654
 655 print_config(){
 656     pfx=$1
 657     files=$2
 658     shift 2
 659     map 'eval echo "$v \${$v:-no}"' "$@" |
 660     awk "BEGIN { split(\"$files\", files) }
 661         {
 662             c = \"$pfx\" toupper(\$1);
 663             v = \$2;
 664             sub(/yes/, 1, v);
 665             sub(/no/,  0, v);
 666             for (f in files) {
 667                 file = files[f];
 668                 if (file ~ /\\.h\$/) {
 669                     printf(\"#define %s %d\\n\", c, v) >>file;
 670                 } else if (file ~ /\\.asm\$/) {
 671                     printf(\"%%define %s %d\\n\", c, v) >>file;
 672                 } else if (file ~ /\\.mak\$/) {
 673                     n = -v ? \"\" : \"!\";
 674                     printf(\"%s%s=yes\\n\", n, c) >>file;
 675                 }
 676             }
 677         }"
 678 }
 679
 680 print_enabled(){
 681     suf=$1
 682     shift
 683     for v; do
 684         enabled $v && printf "%s\n" ${v%$suf}
 685     done
 686 }
 687
 688 append(){
 689     var=$1
 690     shift
 691     eval "$var=\"\$$var $*\""
 692 }
 693
 694 prepend(){
 695     var=$1
 696     shift
 697     eval "$var=\"$* \$$var\""
 698 }
 699
 700 unique(){
 701     var=$1
 702     uniq_list=""
 703     for tok in $(eval echo \$$var); do
 704         uniq_list="$(filter_out $tok $uniq_list) $tok"
 705     done
 706     eval "$var=\"${uniq_list}\""
 707 }
 708
 709 resolve(){
 710     var=$1
 711     tmpvar=
 712     for entry in $(eval echo \$$var); do
 713         tmpvar="$tmpvar $(eval echo \$${entry})"
 714     done
 715     eval "$var=\"${tmpvar}\""
 716 }
 717
 718 add_cppflags(){
 719     append CPPFLAGS "$@"
 720 }
 721
 722 add_cflags(){
 723     append CFLAGS $($cflags_filter "$@")
 724 }
 725
 726 add_cflags_headers(){
 727     append CFLAGS_HEADERS $($cflags_filter "$@")
 728 }
 729
 730 add_asflags(){
 731     append ASFLAGS $($asflags_filter "$@")
 732 }
 733
 734 add_objcflags(){
 735     append OBJCFLAGS $($objcflags_filter "$@")
 736 }
 737
 738 add_ldflags(){
 739     append LDFLAGS $($ldflags_filter "$@")
 740 }
 741
 742 add_ldexeflags(){
 743     append LDEXEFLAGS $($ldflags_filter "$@")
 744 }
 745
 746 add_stripflags(){
 747     append STRIPFLAGS "$@"
 748 }
 749
 750 add_extralibs(){
 751     prepend extralibs $($ldflags_filter "$@")
 752 }
 753
 754 add_host_cppflags(){
 755     append host_cppflags "$@"
 756 }
 757
 758 add_host_cflags(){
 759     append host_cflags $($host_cflags_filter "$@")
 760 }
 761
 762 add_host_ldflags(){
 763     append host_ldflags $($host_ldflags_filter "$@")
 764 }
 765
 766 add_compat(){
 767     append compat_objs $1
 768     shift
 769     map 'add_cppflags -D$v' "$@"
 770 }
 771
 772 check_cmd(){
 773     log "$@"
 774     "$@" >> $logfile 2>&1
 775 }
 776
 777 cc_o(){
 778     eval printf '%s\\n' $CC_O
 779 }
 780
 781 cc_e(){
 782     eval printf '%s\\n' $CC_E
 783 }
 784
 785 check_cc(){
 786     log check_cc "$@"
 787     cat > $TMPC
 788     log_file $TMPC
 789     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 790 }
 791
 792 check_objcc(){
 793     log check_objcc "$@"
 794     cat > $TMPC
 795     log_file $TMPC
 796     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
 797 }
 798
 799 check_cpp(){
 800     log check_cpp "$@"
 801     cat > $TMPC
 802     log_file $TMPC
 803     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 804 }
 805
 806 as_o(){
 807     eval printf '%s\\n' $AS_O
 808 }
 809
 810 check_as(){
 811     log check_as "$@"
 812     cat > $TMPS
 813     log_file $TMPS
 814     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 815 }
 816
 817 check_inline_asm(){
 818     log check_inline_asm "$@"
 819     name="$1"
 820     code="$2"
 821     shift 2
 822     disable $name
 823     check_cc "$@" <<EOF && enable $name
 824 void foo(void){ __asm__ volatile($code); }
 825 EOF
 826 }
 827
 828 check_insn(){
 829     log check_insn "$@"
 830     check_inline_asm ${1}_inline "\"$2\""
 831     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 832 }
 833
 834 check_x86asm(){
 835     log check_x86asm "$@"
 836     echo "$1" > $TMPS
 837     log_file $TMPS
 838     shift 1
 839     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
 840 }
 841
 842 ld_o(){
 843     eval printf '%s\\n' $LD_O
 844 }
 845
 846 check_ld(){
 847     log check_ld "$@"
 848     flags=$(filter_out '-l*' "$@")
 849     libs=$(filter '-l*' "$@")
 850     check_cc $($cflags_filter $flags) || return
 851     flags=$($ldflags_filter $flags)
 852     libs=$($ldflags_filter $libs)
 853     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 854 }
 855
 856 print_include(){
 857     hdr=$1
 858     test "${hdr%.h}" = "${hdr}" &&
 859         echo "#include $hdr"    ||
 860         echo "#include <$hdr>"
 861 }
 862
 863 check_code(){
 864     log check_code "$@"
 865     check=$1
 866     headers=$2
 867     code=$3
 868     shift 3
 869     {
 870         for hdr in $headers; do
 871             print_include $hdr
 872         done
 873         echo "int main(void) { $code; return 0; }"
 874     } | check_$check "$@"
 875 }
 876
 877 check_cppflags(){
 878     log check_cppflags "$@"
 879     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
 880 #include <stdlib.h>;
 881 EOF
 882 }
 883
 884 test_cflags(){
 885     log test_cflags "$@"
 886     set -- $($cflags_filter "$@")
 887     check_cc "$@" <<EOF
 888 int x;
 889 EOF
 890 }
 891
 892 check_cflags(){
 893     log check_cflags "$@"
 894     test_cflags "$@" && add_cflags "$@"
 895 }
 896
 897 test_objcflags(){
 898     log test_objcflags "$@"
 899     set -- $($objcflags_filter "$@")
 900     check_objcc "$@" <<EOF
 901 int x;
 902 EOF
 903 }
 904
 905 check_objcflags(){
 906     log check_objcflags "$@"
 907     test_objcflags "$@" && add_objcflags "$@"
 908 }
 909
 910 test_ldflags(){
 911     log test_ldflags "$@"
 912     check_ld "$@" <<EOF
 913 int main(void){ return 0; }
 914 EOF
 915 }
 916
 917 check_ldflags(){
 918     log check_ldflags "$@"
 919     test_ldflags "$@" && add_ldflags "$@"
 920 }
 921
 922 test_stripflags(){
 923     log test_stripflags "$@"
 924     # call check_cc to get a fresh TMPO
 925     check_cc <<EOF
 926 int main(void) { return 0; }
 927 EOF
 928     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 929 }
 930
 931 check_stripflags(){
 932     log check_stripflags "$@"
 933     test_stripflags "$@" && add_stripflags "$@"
 934 }
 935
 936 check_header(){
 937     log check_header "$@"
 938     header=$1
 939     shift
 940     disable_sanitized $header
 941     check_cpp "$@" <<EOF && enable_sanitized $header
 942 #include <$header>
 943 int x;
 944 EOF
 945 }
 946
 947 check_func(){
 948     log check_func "$@"
 949     func=$1
 950     shift
 951     disable $func
 952     check_ld "$@" <<EOF && enable $func
 953 extern int $func();
 954 int main(void){ $func(); }
 955 EOF
 956 }
 957
 958 check_mathfunc(){
 959     log check_mathfunc "$@"
 960     func=$1
 961     narg=$2
 962     shift 2
 963     test $narg = 2 && args="f, g" || args="f"
 964     disable $func
 965     check_ld "$@" <<EOF && enable $func
 966 #include <math.h>
 967 float foo(float f, float g) { return $func($args); }
 968 int main(void){ return 0; }
 969 EOF
 970 }
 971
 972 check_func_headers(){
 973     log check_func_headers "$@"
 974     headers=$1
 975     funcs=$2
 976     shift 2
 977     {
 978         for hdr in $headers; do
 979             print_include $hdr
 980         done
 981         for func in $funcs; do
 982             echo "long check_$func(void) { return (long) $func; }"
 983         done
 984         echo "int main(void) { return 0; }"
 985     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
 986 }
 987
 988 check_cpp_condition(){
 989     log check_cpp_condition "$@"
 990     header=$1
 991     condition=$2
 992     shift 2
 993     check_cpp "$@" <<EOF
 994 #include <$header>
 995 #if !($condition)
 996 #error "unsatisfied condition: $condition"
 997 #endif
 998 EOF
 999 }
1000
1001 test_cflags_cpp(){
1002     log test_cflags_cpp "$@"
1003     flags=$1
1004     condition=$2
1005     shift 2
1006     set -- $($cflags_filter "$flags")
1007     check_cpp "$@" <<EOF
1008 #if !($condition)
1009 #error "unsatisfied condition: $condition"
1010 #endif
1011 EOF
1012 }
1013
1014 check_lib(){
1015     log check_lib "$@"
1016     name="$1"
1017     headers="$2"
1018     funcs="$3"
1019     shift 3
1020     disable $name
1021     check_func_headers "$headers" "$funcs" "$@" &&
1022         enable $name && eval ${name}_extralibs="\$@"
1023 }
1024
1025 check_pkg_config(){
1026     log check_pkg_config "$@"
1027     name="$1"
1028     pkg_version="$2"
1029     pkg="${2%% *}"
1030     headers="$3"
1031     funcs="$4"
1032     shift 4
1033     disable $name
1034     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1035     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1036     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1037     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1038         enable $name &&
1039         add_cflags    "$pkg_cflags" &&
1040         eval $(sanitize_var_name ${name}_extralibs)="\$pkg_libs"
1041 }
1042
1043 check_exec(){
1044     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1045 }
1046
1047 check_exec_crash(){
1048     log check_exec_crash "$@"
1049     code=$(cat)
1050
1051     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1052     # are safe but may not be available everywhere.  Thus we use
1053     # raise(SIGTERM) instead.  The check is run in a subshell so we
1054     # can redirect the "Terminated" message from the shell.  SIGBUS
1055     # is not defined by standard C so it is used conditionally.
1056
1057     (check_exec "$@") >> $logfile 2>&1 <<EOF
1058 #include <signal.h>
1059 static void sighandler(int sig){
1060     raise(SIGTERM);
1061 }
1062 int foo(void){
1063     $code
1064 }
1065 int (*func_ptr)(void) = foo;
1066 int main(void){
1067     signal(SIGILL, sighandler);
1068     signal(SIGFPE, sighandler);
1069     signal(SIGSEGV, sighandler);
1070 #ifdef SIGBUS
1071     signal(SIGBUS, sighandler);
1072 #endif
1073     return func_ptr();
1074 }
1075 EOF
1076 }
1077
1078 check_type(){
1079     log check_type "$@"
1080     headers=$1
1081     type=$2
1082     shift 2
1083     disable_sanitized "$type"
1084     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1085 }
1086
1087 check_struct(){
1088     log check_struct "$@"
1089     headers=$1
1090     struct=$2
1091     member=$3
1092     shift 3
1093     disable_sanitized "${struct}_${member}"
1094     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1095         enable_sanitized "${struct}_${member}"
1096 }
1097
1098 check_builtin(){
1099     log check_builtin "$@"
1100     name=$1
1101     headers=$2
1102     builtin=$3
1103     shift 3
1104     disable "$name"
1105     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1106 }
1107
1108 check_compile_assert(){
1109     log check_compile_assert "$@"
1110     name=$1
1111     headers=$2
1112     condition=$3
1113     shift 3
1114     disable "$name"
1115     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1116 }
1117
1118 require(){
1119     log require "$@"
1120     name_version="$1"
1121     name="${1%% *}"
1122     headers="$2"
1123     func="$3"
1124     shift 3
1125     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1126 }
1127
1128 require_header(){
1129     log require "$@"
1130     header="$1"
1131     shift
1132     check_header "$header" "$@" || die "ERROR: $header not found"
1133 }
1134
1135 require_cpp_condition(){
1136     log require "$@"
1137     header="$1"
1138     condition="$2"
1139     shift 2
1140     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1141 }
1142
1143 require_pkg_config(){
1144     log require_pkg_config "$@"
1145     pkg_version="$2"
1146     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1147 }
1148
1149 hostcc_e(){
1150     eval printf '%s\\n' $HOSTCC_E
1151 }
1152
1153 hostcc_o(){
1154     eval printf '%s\\n' $HOSTCC_O
1155 }
1156
1157 check_host_cc(){
1158     log check_host_cc "$@"
1159     cat > $TMPC
1160     log_file $TMPC
1161     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1162 }
1163
1164 check_host_cpp(){
1165     log check_host_cpp "$@"
1166     cat > $TMPC
1167     log_file $TMPC
1168     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1169 }
1170
1171 check_host_cppflags(){
1172     log check_host_cppflags "$@"
1173     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1174 #include <stdlib.h>;
1175 EOF
1176 }
1177
1178 check_host_cflags(){
1179     log check_host_cflags "$@"
1180     set -- $($host_cflags_filter "$@")
1181     check_host_cc "$@" <<EOF && append host_cflags "$@"
1182 int x;
1183 EOF
1184 }
1185
1186 check_host_cpp_condition(){
1187     log check_host_cpp_condition "$@"
1188     header=$1
1189     condition=$2
1190     shift 2
1191     check_host_cpp "$@" <<EOF
1192 #include <$header>
1193 #if !($condition)
1194 #error "unsatisfied condition: $condition"
1195 #endif
1196 EOF
1197 }
1198
1199 apply(){
1200     file=$1
1201     shift
1202     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1203 }
1204
1205 cp_if_changed(){
1206     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1207     mkdir -p "$(dirname $2)"
1208     cp -f "$1" "$2"
1209 }
1210
1211 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1212 # system-dependent things.
1213
1214 AVCODEC_COMPONENTS="
1215     bsfs
1216     decoders
1217     encoders
1218     hwaccels
1219     parsers
1220 "
1221
1222 AVDEVICE_COMPONENTS="
1223     indevs
1224     outdevs
1225 "
1226 AVFILTER_COMPONENTS="
1227     filters
1228 "
1229 AVFORMAT_COMPONENTS="
1230     demuxers
1231     muxers
1232     protocols
1233 "
1234
1235 AVRESAMPLE_COMPONENTS=""
1236 AVUTIL_COMPONENTS=""
1237
1238 COMPONENT_LIST="
1239     $AVCODEC_COMPONENTS
1240     $AVDEVICE_COMPONENTS
1241     $AVFILTER_COMPONENTS
1242     $AVFORMAT_COMPONENTS
1243     $AVRESAMPLE_COMPONENTS
1244     $AVUTIL_COMPONENTS
1245 "
1246
1247 EXAMPLE_LIST="
1248     decode_audio_example
1249     decode_video_example
1250     encode_audio_example
1251     encode_video_example
1252     filter_audio_example
1253     metadata_example
1254     output_example
1255     qsvdec_example
1256     transcode_aac_example
1257 "
1258
1259 # catchall list of things that require external libs to link
1260 EXTRALIBS_LIST="
1261     cpu_init
1262     cws2fws
1263 "
1264
1265 HWACCEL_LIBRARY_NONFREE_LIST="
1266     cuda
1267     libnpp
1268 "
1269 HWACCEL_LIBRARY_LIST="
1270     $HWACCEL_LIBRARY_NONFREE_LIST
1271     d3d11va
1272     dxva2
1273     libmfx
1274     mmal
1275     nvenc
1276     omx
1277     vaapi
1278     vda
1279     vdpau
1280 "
1281
1282 EXTERNAL_LIBRARY_GPL_LIST="
1283     libcdio
1284     libx264
1285     libx265
1286     libxavs
1287     libxvid
1288 "
1289
1290 EXTERNAL_LIBRARY_NONFREE_LIST="
1291     libfaac
1292     libfdk_aac
1293     openssl
1294 "
1295
1296 EXTERNAL_LIBRARY_VERSION3_LIST="
1297     libopencore_amrnb
1298     libopencore_amrwb
1299     libvo_aacenc
1300     libvo_amrwbenc
1301 "
1302
1303 EXTERNAL_LIBRARY_LIST="
1304     $EXTERNAL_LIBRARY_GPL_LIST
1305     $EXTERNAL_LIBRARY_NONFREE_LIST
1306     $EXTERNAL_LIBRARY_VERSION3_LIST
1307     avisynth
1308     avxsynth
1309     frei0r
1310     gnutls
1311     libbs2b
1312     libdc1394
1313     libdcadec
1314     libfontconfig
1315     libfreetype
1316     libgsm
1317     libhdcd
1318     libilbc
1319     libjack
1320     libkvazaar
1321     libmp3lame
1322     libopencv
1323     libopenh264
1324     libopenjpeg
1325     libopus
1326     libpulse
1327     librtmp
1328     libschroedinger
1329     libsnappy
1330     libspeex
1331     libtheora
1332     libtwolame
1333     libvorbis
1334     libvpx
1335     libwavpack
1336     libwebp
1337     libxcb
1338     libxcb_shm
1339     libxcb_xfixes
1340 "
1341
1342 SYSTEM_LIBRARY_LIST="
1343     bzlib
1344     zlib
1345 "
1346
1347 FEATURE_LIST="
1348     gray
1349     hardcoded_tables
1350     omx_rpi
1351     runtime_cpudetect
1352     safe_bitstream_reader
1353     shared
1354     small
1355     sram
1356     static
1357     swscale_alpha
1358 "
1359
1360 LIBRARY_LIST="
1361     avcodec
1362     avdevice
1363     avfilter
1364     avformat
1365     avresample
1366     avutil
1367     swscale
1368 "
1369
1370 LICENSE_LIST="
1371     gpl
1372     nonfree
1373     version3
1374 "
1375
1376 PROGRAM_LIST="
1377     avconv
1378     avplay
1379     avprobe
1380 "
1381
1382 SUBSYSTEM_LIST="
1383     dct
1384     doc
1385     error_resilience
1386     faan
1387     fft
1388     lsp
1389     lzo
1390     mdct
1391     network
1392     rdft
1393 "
1394
1395 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1396 CONFIG_LIST="
1397     $EXAMPLE_LIST
1398     $EXTERNAL_LIBRARY_LIST
1399     $HWACCEL_LIBRARY_LIST
1400     $FEATURE_LIST
1401     $LICENSE_LIST
1402     $LIBRARY_LIST
1403     $PROGRAM_LIST
1404     $SUBSYSTEM_LIST
1405     $SYSTEM_LIBRARY_LIST
1406     neon_clobber_test
1407     pic
1408     pod2man
1409     texi2html
1410     thumb
1411     valgrind_backtrace
1412     xmm_clobber_test
1413     $COMPONENT_LIST
1414 "
1415
1416 THREADS_LIST="
1417     pthreads
1418     w32threads
1419 "
1420
1421 ATOMICS_LIST="
1422     atomics_gcc
1423     atomics_suncc
1424     atomics_win32
1425 "
1426
1427 ARCH_LIST="
1428     aarch64
1429     alpha
1430     arm
1431     avr32
1432     avr32_ap
1433     avr32_uc
1434     bfin
1435     ia64
1436     m68k
1437     mips
1438     mips64
1439     parisc
1440     ppc
1441     ppc64
1442     s390
1443     sh4
1444     sparc
1445     sparc64
1446     tilegx
1447     tilepro
1448     tomi
1449     x86
1450     x86_32
1451     x86_64
1452 "
1453
1454 ARCH_EXT_LIST_ARM="
1455     armv5te
1456     armv6
1457     armv6t2
1458     armv8
1459     neon
1460     vfp
1461     vfpv3
1462 "
1463
1464 ARCH_EXT_LIST_X86_SIMD="
1465     amd3dnow
1466     amd3dnowext
1467     avx
1468     avx2
1469     fma3
1470     fma4
1471     mmx
1472     mmxext
1473     sse
1474     sse2
1475     sse3
1476     sse4
1477     sse42
1478     ssse3
1479     xop
1480 "
1481
1482 ARCH_EXT_LIST_PPC="
1483     altivec
1484     dcbzl
1485     ldbrx
1486     power8
1487     ppc4xx
1488     vsx
1489 "
1490
1491 ARCH_EXT_LIST_X86="
1492     $ARCH_EXT_LIST_X86_SIMD
1493     cpunop
1494     i686
1495 "
1496
1497 ARCH_EXT_LIST_MIPS="
1498     loongson
1499     mips32r1
1500     mips64r1
1501     mips32r2
1502     mips64r2
1503     mips32r6
1504     mips64r6
1505 "
1506
1507 ARCH_EXT_LIST="
1508     $ARCH_EXT_LIST_ARM
1509     $ARCH_EXT_LIST_MIPS
1510     $ARCH_EXT_LIST_PPC
1511     $ARCH_EXT_LIST_X86
1512     vis
1513 "
1514
1515 ARCH_FEATURES="
1516     aligned_stack
1517     fast_64bit
1518     fast_clz
1519     fast_cmov
1520     local_aligned_8
1521     local_aligned_16
1522     local_aligned_32
1523     simd_align_16
1524     simd_align_32
1525 "
1526
1527 BUILTIN_LIST="
1528     atomic_cas_ptr
1529     machine_rw_barrier
1530     MemoryBarrier
1531     mm_empty
1532     rdtsc
1533     sem_timedwait
1534     sync_val_compare_and_swap
1535 "
1536 HAVE_LIST_CMDLINE="
1537     inline_asm
1538     symver
1539     x86asm
1540 "
1541
1542 HAVE_LIST_PUB="
1543     bigendian
1544     fast_unaligned
1545 "
1546
1547 HEADERS_LIST="
1548     AVFoundation_AVFoundation_h
1549     alsa_asoundlib_h
1550     arpa_inet_h
1551     cdio_paranoia_h
1552     cdio_paranoia_paranoia_h
1553     d3d11_h
1554     dispatch_dispatch_h
1555     dev_bktr_ioctl_bt848_h
1556     dev_bktr_ioctl_meteor_h
1557     dev_ic_bt8xx_h
1558     dev_video_bktr_ioctl_bt848_h
1559     dev_video_meteor_ioctl_meteor_h
1560     direct_h
1561     dlfcn_h
1562     dxva_h
1563     gsm_h
1564     io_h
1565     mach_mach_time_h
1566     machine_ioctl_bt848_h
1567     machine_ioctl_meteor_h
1568     malloc_h
1569     poll_h
1570     sndio_h
1571     soundcard_h
1572     stdatomic_h
1573     sys_mman_h
1574     sys_param_h
1575     sys_resource_h
1576     sys_select_h
1577     sys_soundcard_h
1578     sys_time_h
1579     sys_un_h
1580     sys_videoio_h
1581     unistd_h
1582     valgrind_valgrind_h
1583     windows_h
1584     winsock2_h
1585 "
1586
1587 INTRINSICS_LIST="
1588     intrinsics_neon
1589 "
1590
1591 MATH_FUNCS="
1592     atanf
1593     atan2f
1594     cbrtf
1595     cosf
1596     exp2
1597     exp2f
1598     expf
1599     isinf
1600     isnan
1601     ldexpf
1602     llrint
1603     llrintf
1604     log2
1605     log2f
1606     log10f
1607     lrint
1608     lrintf
1609     powf
1610     rint
1611     round
1612     roundf
1613     sinf
1614     trunc
1615     truncf
1616 "
1617
1618 SYSTEM_FUNCS="
1619     aligned_malloc
1620     clock_gettime
1621     closesocket
1622     CommandLineToArgvW
1623     CoTaskMemFree
1624     CryptGenRandom
1625     fcntl
1626     flt_lim
1627     fork
1628     getaddrinfo
1629     gethrtime
1630     getopt
1631     GetProcessAffinityMask
1632     GetProcessMemoryInfo
1633     GetProcessTimes
1634     getrusage
1635     GetSystemTimeAsFileTime
1636     gettimeofday
1637     gmtime_r
1638     inet_aton
1639     isatty
1640     LoadLibrary
1641     localtime_r
1642     mach_absolute_time
1643     MapViewOfFile
1644     memalign
1645     mkstemp
1646     mmap
1647     mprotect
1648     nanosleep
1649     posix_memalign
1650     sched_getaffinity
1651     SetConsoleTextAttribute
1652     setmode
1653     setrlimit
1654     Sleep
1655     strerror_r
1656     sysconf
1657     sysctl
1658     usleep
1659     VirtualAlloc
1660 "
1661
1662 TOOLCHAIN_FEATURES="
1663     as_arch_directive
1664     as_fpu_directive
1665     as_func
1666     as_object_arch
1667     asm_mod_q
1668     attribute_may_alias
1669     attribute_packed
1670     blocks_extension
1671     ebp_available
1672     ebx_available
1673     gnu_as
1674     ibm_asm
1675     inline_asm_labels
1676     pragma_deprecated
1677     symver_asm_label
1678     symver_gnu_asm
1679     vfp_args
1680     xform_asm
1681     xmm_clobbers
1682 "
1683
1684 TYPES_LIST="
1685     CONDITION_VARIABLE_Ptr
1686     socklen_t
1687     struct_addrinfo
1688     struct_group_source_req
1689     struct_ip_mreq_source
1690     struct_ipv6_mreq
1691     struct_pollfd
1692     struct_rusage_ru_maxrss
1693     struct_sockaddr_in6
1694     struct_sockaddr_sa_len
1695     struct_sockaddr_storage
1696     struct_v4l2_frmivalenum_discrete
1697 "
1698
1699 HAVE_LIST="
1700     $ARCH_EXT_LIST
1701     $(add_suffix _external $ARCH_EXT_LIST)
1702     $(add_suffix _inline   $ARCH_EXT_LIST)
1703     $ARCH_FEATURES
1704     $BUILTIN_LIST
1705     $HAVE_LIST_CMDLINE
1706     $HAVE_LIST_PUB
1707     $HEADERS_LIST
1708     $INTRINSICS_LIST
1709     $MATH_FUNCS
1710     $SYSTEM_FUNCS
1711     $THREADS_LIST
1712     $TOOLCHAIN_FEATURES
1713     $TYPES_LIST
1714     dos_paths
1715     libc_msvcrt
1716     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1717     sdl
1718     section_data_rel_ro
1719     threads
1720     vaapi_drm
1721     vaapi_x11
1722     vdpau_x11
1723 "
1724
1725 # options emitted with CONFIG_ prefix but not available on the command line
1726 CONFIG_EXTRA="
1727     aandcttables
1728     ac3dsp
1729     adts_header
1730     audio_frame_queue
1731     audiodsp
1732     blockdsp
1733     bswapdsp
1734     cabac
1735     dirac_parse
1736     dvprofile
1737     faandct
1738     faanidct
1739     fdctdsp
1740     flacdsp
1741     fmtconvert
1742     g722dsp
1743     gmp
1744     golomb
1745     gplv3
1746     h263dsp
1747     h264chroma
1748     h264dsp
1749     h264parse
1750     h264pred
1751     h264qpel
1752     hevc_ps
1753     hpeldsp
1754     huffman
1755     huffyuvdsp
1756     huffyuvencdsp
1757     idctdsp
1758     iirfilter
1759     imdct15
1760     intrax8
1761     iso_media
1762     ividsp
1763     jpegtables
1764     lgplv3
1765     libx262
1766     libxcb_shape
1767     lpc
1768     lzf
1769     me_cmp
1770     mpeg_er
1771     mpegaudio
1772     mpegaudiodsp
1773     mpegaudioheader
1774     mpegvideo
1775     mpegvideoenc
1776     mss34dsp
1777     pixblockdsp
1778     qpeldsp
1779     qsv
1780     qsvdec
1781     qsvenc
1782     rangecoder
1783     riffdec
1784     riffenc
1785     rtpdec
1786     rtpenc_chain
1787     rv34dsp
1788     sinewin
1789     snappy
1790     srtp
1791     startcode
1792     texturedsp
1793     texturedspenc
1794     tpeldsp
1795     vaapi_encode
1796     vc1dsp
1797     videodsp
1798     vp3dsp
1799     vp56dsp
1800     vp8dsp
1801     wma_freqs
1802     wmv2dsp
1803 "
1804
1805 CMDLINE_SELECT="
1806     $ARCH_EXT_LIST
1807     $CONFIG_LIST
1808     $HAVE_LIST_CMDLINE
1809     $THREADS_LIST
1810     asm
1811     cross_compile
1812     debug
1813     extra_warnings
1814     logging
1815     lto
1816     optimizations
1817     rpath
1818 "
1819
1820 PATHS_LIST="
1821     bindir
1822     datadir
1823     docdir
1824     incdir
1825     libdir
1826     mandir
1827     prefix
1828     shlibdir
1829 "
1830
1831 CMDLINE_SET="
1832     $PATHS_LIST
1833     ar
1834     arch
1835     as
1836     cc
1837     objcc
1838     cpu
1839     cross_prefix
1840     custom_allocator
1841     dep_cc
1842     env
1843     extra_version
1844     host_cc
1845     host_cflags
1846     host_extralibs
1847     host_ld
1848     host_ldflags
1849     host_os
1850     ignore_tests
1851     ld
1852     logfile
1853     malloc_prefix
1854     nm
1855     optflags
1856     pkg_config
1857     pkg_config_flags
1858     random_seed
1859     samples
1860     sysinclude
1861     sysroot
1862     target_exec
1863     target_os
1864     target_path
1865     target_samples
1866     toolchain
1867     x86asmexe
1868 "
1869
1870 CMDLINE_APPEND="
1871     extra_cflags
1872     extra_objcflags
1873     host_cppflags
1874 "
1875
1876 # code dependency declarations
1877
1878 # architecture extensions
1879
1880 armv5te_deps="arm"
1881 armv6_deps="arm"
1882 armv6t2_deps="arm"
1883 armv8_deps="aarch64"
1884 neon_deps_any="aarch64 arm"
1885 intrinsics_neon_deps="neon"
1886 vfp_deps_any="aarch64 arm"
1887 vfpv3_deps="vfp"
1888
1889 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1890
1891 altivec_deps="ppc"
1892 dcbzl_deps="ppc"
1893 ldbrx_deps="ppc"
1894 ppc4xx_deps="ppc"
1895 vsx_deps="altivec"
1896 power8_deps="vsx"
1897
1898 loongson_deps="mips"
1899 mips32r1_deps="mips32"
1900 mips32r2_deps="mips32"
1901 mips32r6_deps="mips32"
1902 mips64r1_deps="mips64"
1903 mips64r2_deps="mips64"
1904 mips64r6_deps="mips64"
1905
1906 vis_deps="sparc"
1907
1908 cpunop_deps="i686"
1909 x86_64_select="i686"
1910 x86_64_suggest="fast_cmov"
1911
1912 amd3dnow_deps="mmx"
1913 amd3dnowext_deps="amd3dnow"
1914 i686_deps="x86"
1915 mmx_deps="x86"
1916 mmxext_deps="mmx"
1917 sse_deps="mmxext"
1918 sse2_deps="sse"
1919 sse3_deps="sse2"
1920 ssse3_deps="sse3"
1921 sse4_deps="ssse3"
1922 sse42_deps="sse4"
1923 avx_deps="sse42"
1924 xop_deps="avx"
1925 fma3_deps="avx"
1926 fma4_deps="avx"
1927 avx2_deps="avx"
1928
1929 mmx_external_deps="x86asm"
1930 mmx_inline_deps="inline_asm x86"
1931 mmx_suggest="mmx_external mmx_inline"
1932
1933 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1934     eval dep=\$${ext}_deps
1935     eval ${ext}_external_deps='"${dep}_external"'
1936     eval ${ext}_inline_deps='"${dep}_inline"'
1937     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1938 done
1939
1940 aligned_stack_if_any="aarch64 ppc x86"
1941 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1942 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1943 fast_unaligned_if_any="aarch64 ppc x86"
1944 simd_align_16_if_any="altivec neon sse"
1945 simd_align_32_if_any="avx"
1946
1947 # system capabilities
1948 symver_if_any="symver_asm_label symver_gnu_asm"
1949 valgrind_backtrace_conflict="optimizations"
1950 valgrind_backtrace_deps="valgrind_valgrind_h"
1951
1952 # threading support
1953 atomics_gcc_if="sync_val_compare_and_swap"
1954 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1955 atomics_win32_if="MemoryBarrier"
1956 atomics_native_if_any="$ATOMICS_LIST"
1957 w32threads_deps="atomics_native"
1958 threads_if_any="$THREADS_LIST"
1959
1960 # subsystems
1961 dct_select="rdft"
1962 dirac_parse_select="golomb"
1963 error_resilience_select="me_cmp"
1964 faandct_deps="faan"
1965 faandct_select="fdctdsp"
1966 faanidct_deps="faan"
1967 faanidct_select="idctdsp"
1968 h264dsp_select="startcode"
1969 hevc_ps_select="golomb"
1970 intrax8_select="blockdsp idctdsp"
1971 mdct_select="fft"
1972 rdft_select="fft"
1973 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1974 mpeg_er_select="error_resilience"
1975 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1976 mpegaudiodsp_select="dct"
1977 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1978 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1979 vc1dsp_select="h264chroma qpeldsp startcode"
1980
1981 # decoders / encoders
1982 aac_decoder_select="adts_header imdct15 mdct sinewin"
1983 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1984 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1985 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1986 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1987 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1988 adpcm_g722_decoder_select="g722dsp"
1989 adpcm_g722_encoder_select="g722dsp"
1990 aic_decoder_select="golomb idctdsp"
1991 alac_encoder_select="lpc"
1992 als_decoder_select="bswapdsp"
1993 amrnb_decoder_select="lsp"
1994 amrwb_decoder_select="lsp"
1995 amv_decoder_select="sp5x_decoder"
1996 ape_decoder_select="bswapdsp"
1997 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1998 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1999 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2000 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2001 atrac1_decoder_select="mdct sinewin"
2002 atrac3_decoder_select="mdct"
2003 atrac3p_decoder_select="mdct sinewin"
2004 bink_decoder_select="blockdsp hpeldsp"
2005 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2006 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2007 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2008 clearvideo_decoder_select="idctdsp"
2009 cllc_decoder_select="bswapdsp"
2010 comfortnoise_encoder_select="lpc"
2011 cook_decoder_select="audiodsp mdct sinewin"
2012 cscd_decoder_select="lzo"
2013 cscd_decoder_suggest="zlib"
2014 dca_decoder_select="fmtconvert mdct"
2015 dds_decoder_select="texturedsp"
2016 dnxhd_decoder_select="blockdsp idctdsp"
2017 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2018 dvvideo_decoder_select="dvprofile idctdsp"
2019 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2020 dxa_decoder_deps="zlib"
2021 dxv_decoder_select="lzf texturedsp"
2022 eac3_decoder_select="ac3_decoder"
2023 eac3_encoder_select="ac3_encoder"
2024 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2025 eatgq_decoder_select="aandcttables idctdsp"
2026 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2027 exr_decoder_deps="zlib"
2028 ffv1_decoder_select="rangecoder"
2029 ffv1_encoder_select="rangecoder"
2030 ffvhuff_decoder_select="huffyuv_decoder"
2031 ffvhuff_encoder_select="huffyuv_encoder"
2032 fic_decoder_select="golomb"
2033 flac_decoder_select="flacdsp"
2034 flac_encoder_select="bswapdsp flacdsp lpc"
2035 flashsv_decoder_deps="zlib"
2036 flashsv_encoder_deps="zlib"
2037 flashsv2_decoder_deps="zlib"
2038 flv_decoder_select="h263_decoder"
2039 flv_encoder_select="h263_encoder"
2040 fourxm_decoder_select="blockdsp bswapdsp"
2041 fraps_decoder_select="bswapdsp huffman"
2042 g2m_decoder_deps="zlib"
2043 g2m_decoder_select="blockdsp idctdsp jpegtables"
2044 h261_decoder_select="mpeg_er mpegvideo"
2045 h261_encoder_select="aandcttables mpegvideoenc"
2046 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2047 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2048 h263i_decoder_select="h263_decoder"
2049 h263p_encoder_select="h263_encoder"
2050 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2051 h264_decoder_suggest="error_resilience"
2052 hap_decoder_select="snappy texturedsp"
2053 hap_encoder_deps="libsnappy"
2054 hap_encoder_select="texturedspenc"
2055 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2056 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2057 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2058 iac_decoder_select="imc_decoder"
2059 imc_decoder_select="bswapdsp fft mdct sinewin"
2060 indeo3_decoder_select="hpeldsp"
2061 indeo4_decoder_select="ividsp"
2062 indeo5_decoder_select="ividsp"
2063 interplay_video_decoder_select="hpeldsp"
2064 jpegls_decoder_select="mjpeg_decoder"
2065 jv_decoder_select="blockdsp"
2066 lagarith_decoder_select="huffyuvdsp"
2067 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2068 magicyuv_decoder_select="huffyuvdsp"
2069 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2070 metasound_decoder_select="lsp mdct sinewin"
2071 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2072 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2073 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2074 mjpegb_decoder_select="mjpeg_decoder"
2075 mlp_decoder_select="mlp_parser"
2076 motionpixels_decoder_select="bswapdsp"
2077 mp1_decoder_select="mpegaudio"
2078 mp1float_decoder_select="mpegaudio"
2079 mp2_decoder_select="mpegaudio"
2080 mp2float_decoder_select="mpegaudio"
2081 mp3_decoder_select="mpegaudio"
2082 mp3adu_decoder_select="mpegaudio"
2083 mp3adufloat_decoder_select="mpegaudio"
2084 mp3float_decoder_select="mpegaudio"
2085 mp3on4_decoder_select="mpegaudio"
2086 mp3on4float_decoder_select="mpegaudio"
2087 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2088 mpc8_decoder_select="mpegaudiodsp"
2089 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2090 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2091 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2092 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2093 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2094 mpeg4_encoder_select="h263_encoder"
2095 msa1_decoder_select="mss34dsp"
2096 msmpeg4v1_decoder_select="h263_decoder"
2097 msmpeg4v2_decoder_select="h263_decoder"
2098 msmpeg4v2_encoder_select="h263_encoder"
2099 msmpeg4v3_decoder_select="h263_decoder"
2100 msmpeg4v3_encoder_select="h263_encoder"
2101 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2102 mts2_decoder_select="mss34dsp"
2103 mxpeg_decoder_select="mjpeg_decoder"
2104 nellymoser_decoder_select="mdct sinewin"
2105 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2106 nuv_decoder_select="idctdsp lzo"
2107 on2avc_decoder_select="mdct"
2108 opus_decoder_deps="avresample"
2109 opus_decoder_select="imdct15"
2110 png_decoder_deps="zlib"
2111 png_encoder_deps="zlib"
2112 png_encoder_select="huffyuvencdsp"
2113 prores_decoder_select="idctdsp"
2114 prores_encoder_select="fdctdsp"
2115 qcelp_decoder_select="lsp"
2116 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2117 ra_144_encoder_select="audio_frame_queue lpc"
2118 ralf_decoder_select="golomb"
2119 rscc_decoder_deps="zlib"
2120 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2121 rv10_encoder_select="h263_encoder"
2122 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2123 rv20_encoder_select="h263_encoder"
2124 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2125 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2126 screenpresso_decoder_deps="zlib"
2127 sipr_decoder_select="lsp"
2128 sp5x_decoder_select="mjpeg_decoder"
2129 svq1_decoder_select="hpeldsp"
2130 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2131 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2132 svq3_decoder_suggest="zlib"
2133 tak_decoder_select="audiodsp"
2134 tdsc_decoder_deps="zlib"
2135 tdsc_decoder_select="mjpeg_decoder"
2136 theora_decoder_select="vp3_decoder"
2137 thp_decoder_select="mjpeg_decoder"
2138 tiff_decoder_suggest="zlib"
2139 tiff_encoder_suggest="zlib"
2140 truehd_decoder_select="mlp_decoder"
2141 truemotion2_decoder_select="bswapdsp"
2142 truespeech_decoder_select="bswapdsp"
2143 tscc_decoder_deps="zlib"
2144 txd_decoder_select="texturedsp"
2145 twinvq_decoder_select="mdct lsp sinewin"
2146 utvideo_decoder_select="bswapdsp huffyuvdsp"
2147 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2148 vble_decoder_select="huffyuvdsp"
2149 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2150 vc1image_decoder_select="vc1_decoder"
2151 vorbis_decoder_select="mdct"
2152 vorbis_encoder_select="mdct"
2153 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2154 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2155 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2156 vp6a_decoder_select="vp6_decoder"
2157 vp6f_decoder_select="vp6_decoder"
2158 vp7_decoder_select="h264pred videodsp vp8dsp"
2159 vp8_decoder_select="h264pred videodsp vp8dsp"
2160 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2161 webp_decoder_select="vp8_decoder"
2162 wmapro_decoder_select="mdct sinewin wma_freqs"
2163 wmav1_decoder_select="mdct sinewin wma_freqs"
2164 wmav1_encoder_select="mdct sinewin wma_freqs"
2165 wmav2_decoder_select="mdct sinewin wma_freqs"
2166 wmav2_encoder_select="mdct sinewin wma_freqs"
2167 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2168 wmv1_decoder_select="h263_decoder"
2169 wmv1_encoder_select="h263_encoder"
2170 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2171 wmv2_encoder_select="h263_encoder wmv2dsp"
2172 wmv3_decoder_select="vc1_decoder"
2173 wmv3image_decoder_select="wmv3_decoder"
2174 zerocodec_decoder_deps="zlib"
2175 zlib_decoder_deps="zlib"
2176 zlib_encoder_deps="zlib"
2177 zmbv_decoder_deps="zlib"
2178 zmbv_encoder_deps="zlib"
2179
2180 # hardware accelerators
2181 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2182 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2183 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2184 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2185
2186 h263_vaapi_hwaccel_deps="vaapi"
2187 h263_vaapi_hwaccel_select="h263_decoder"
2188 h264_d3d11va_hwaccel_deps="d3d11va"
2189 h264_d3d11va_hwaccel_select="h264_decoder"
2190 h264_d3d11va2_hwaccel_deps="d3d11va"
2191 h264_d3d11va2_hwaccel_select="h264_decoder"
2192 h264_dxva2_hwaccel_deps="dxva2"
2193 h264_dxva2_hwaccel_select="h264_decoder"
2194 h264_mmal_hwaccel_deps="mmal"
2195 h264_qsv_hwaccel_deps="libmfx"
2196 h264_vaapi_hwaccel_deps="vaapi"
2197 h264_vaapi_hwaccel_select="h264_decoder"
2198 h264_vda_hwaccel_deps="vda"
2199 h264_vda_hwaccel_select="h264_decoder"
2200 h264_vda_old_hwaccel_deps="vda"
2201 h264_vda_old_hwaccel_select="h264_decoder"
2202 h264_vdpau_hwaccel_deps="vdpau"
2203 h264_vdpau_hwaccel_select="h264_decoder"
2204 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2205 hevc_d3d11va_hwaccel_select="hevc_decoder"
2206 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2207 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2208 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2209 hevc_dxva2_hwaccel_select="hevc_decoder"
2210 hevc_qsv_hwaccel_deps="libmfx"
2211 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2212 hevc_vaapi_hwaccel_select="hevc_decoder"
2213 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2214 hevc_vdpau_hwaccel_select="hevc_decoder"
2215 mpeg1_vdpau_hwaccel_deps="vdpau"
2216 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2217 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2218 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2219 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2220 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2221 mpeg2_dxva2_hwaccel_deps="dxva2"
2222 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2223 mpeg2_mmal_hwaccel_deps="mmal"
2224 mpeg2_qsv_hwaccel_deps="libmfx"
2225 mpeg2_vaapi_hwaccel_deps="vaapi"
2226 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2227 mpeg2_vdpau_hwaccel_deps="vdpau"
2228 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2229 mpeg4_vaapi_hwaccel_deps="vaapi"
2230 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2231 mpeg4_vdpau_hwaccel_deps="vdpau"
2232 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2233 vc1_d3d11va_hwaccel_deps="d3d11va"
2234 vc1_d3d11va_hwaccel_select="vc1_decoder"
2235 vc1_d3d11va2_hwaccel_deps="d3d11va"
2236 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2237 vc1_dxva2_hwaccel_deps="dxva2"
2238 vc1_dxva2_hwaccel_select="vc1_decoder"
2239 vc1_mmal_hwaccel_deps="mmal"
2240 vc1_qsv_hwaccel_deps="libmfx"
2241 vc1_vaapi_hwaccel_deps="vaapi"
2242 vc1_vaapi_hwaccel_select="vc1_decoder"
2243 vc1_vdpau_hwaccel_deps="vdpau"
2244 vc1_vdpau_hwaccel_select="vc1_decoder"
2245 vp8_qsv_hwaccel_deps="libmfx"
2246 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2247 vp8_vaapi_hwaccel_select="vp8_decoder"
2248 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2249 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2250 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2251 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2252 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2253
2254 # hardware-accelerated codecs
2255 nvenc_deps_any="libdl LoadLibrary"
2256 omx_deps="libdl pthreads"
2257 omx_rpi_select="omx"
2258 qsv_deps="libmfx"
2259 qsvdec_select="qsv"
2260 qsvenc_select="qsv"
2261 vaapi_encode_deps="vaapi"
2262
2263 hwupload_cuda_filter_deps="cuda"
2264 scale_npp_filter_deps="cuda libnpp"
2265
2266 h264_mmal_decoder_deps="mmal"
2267 h264_nvenc_encoder_deps="nvenc"
2268 h264_omx_encoder_deps="omx"
2269 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2270 h264_qsv_encoder_select="qsvenc"
2271 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2272 h264_vaapi_encoder_select="vaapi_encode golomb"
2273 hevc_nvenc_encoder_deps="nvenc"
2274 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2275 hevc_qsv_encoder_select="hevc_ps qsvenc"
2276 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2277 hevc_vaapi_encoder_select="vaapi_encode golomb"
2278 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2279 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2280 mpeg2_mmal_decoder_deps="mmal"
2281 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2282 mpeg2_qsv_encoder_select="qsvenc"
2283 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2284 mpeg2_vaapi_encoder_select="vaapi_encode"
2285 mpeg4_omx_encoder_deps="omx"
2286 vc1_mmal_decoder_deps="mmal"
2287 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2288 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2289 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2290 vp8_vaapi_encoder_select="vaapi_encode"
2291 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2292 vp9_vaapi_encoder_select="vaapi_encode"
2293
2294 nvenc_h264_encoder_select="h264_nvenc_encoder"
2295 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2296
2297 # parsers
2298 aac_parser_select="adts_header"
2299 h264_parser_select="golomb h264dsp h264parse"
2300 hevc_parser_select="hevc_ps"
2301 mpegaudio_parser_select="mpegaudioheader"
2302 mpegvideo_parser_select="mpegvideo"
2303 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2304 vc1_parser_select="vc1dsp"
2305
2306 # bitstream_filters
2307 aac_adtstoasc_bsf_select="adts_header"
2308 mjpeg2jpeg_bsf_select="jpegtables"
2309
2310 # external libraries
2311 avisynth_deps="LoadLibrary"
2312 avxsynth_deps="libdl"
2313 avisynth_demuxer_deps_any="avisynth avxsynth"
2314 avisynth_demuxer_select="riffdec"
2315 libdcadec_decoder_deps="libdcadec"
2316 libfaac_encoder_deps="libfaac"
2317 libfaac_encoder_select="audio_frame_queue"
2318 libfdk_aac_decoder_deps="libfdk_aac"
2319 libfdk_aac_encoder_deps="libfdk_aac"
2320 libfdk_aac_encoder_select="audio_frame_queue"
2321 libgsm_decoder_deps="libgsm"
2322 libgsm_encoder_deps="libgsm"
2323 libgsm_ms_decoder_deps="libgsm"
2324 libgsm_ms_encoder_deps="libgsm"
2325 libilbc_decoder_deps="libilbc"
2326 libilbc_encoder_deps="libilbc"
2327 libkvazaar_encoder_deps="libkvazaar"
2328 libmp3lame_encoder_deps="libmp3lame"
2329 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2330 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2331 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2332 libopencore_amrnb_encoder_select="audio_frame_queue"
2333 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2334 libopenh264_decoder_deps="libopenh264"
2335 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2336 libopenh264_encoder_deps="libopenh264"
2337 libopenjpeg_decoder_deps="libopenjpeg"
2338 libopenjpeg_encoder_deps="libopenjpeg"
2339 libopus_decoder_deps="libopus"
2340 libopus_encoder_deps="libopus"
2341 libopus_encoder_select="audio_frame_queue"
2342 libschroedinger_decoder_deps="libschroedinger"
2343 libschroedinger_encoder_deps="libschroedinger"
2344 libspeex_decoder_deps="libspeex"
2345 libspeex_encoder_deps="libspeex"
2346 libspeex_encoder_select="audio_frame_queue"
2347 libtheora_encoder_deps="libtheora"
2348 libtwolame_encoder_deps="libtwolame"
2349 libvo_aacenc_encoder_deps="libvo_aacenc"
2350 libvo_aacenc_encoder_select="audio_frame_queue"
2351 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2352 libvorbis_encoder_deps="libvorbis"
2353 libvorbis_encoder_select="audio_frame_queue"
2354 libvpx_vp8_decoder_deps="libvpx"
2355 libvpx_vp8_encoder_deps="libvpx"
2356 libvpx_vp9_decoder_deps="libvpx"
2357 libvpx_vp9_encoder_deps="libvpx"
2358 libwavpack_encoder_deps="libwavpack"
2359 libwavpack_encoder_select="audio_frame_queue"
2360 libwebp_encoder_deps="libwebp"
2361 libx262_encoder_deps="libx262"
2362 libx264_encoder_deps="libx264"
2363 libx265_encoder_deps="libx265"
2364 libxavs_encoder_deps="libxavs"
2365 libxvid_encoder_deps="libxvid mkstemp"
2366
2367 # demuxers / muxers
2368 ac3_demuxer_select="ac3_parser"
2369 asf_demuxer_select="riffdec"
2370 asf_muxer_select="riffenc"
2371 asf_stream_muxer_select="asf_muxer"
2372 avi_demuxer_select="iso_media riffdec"
2373 avi_muxer_select="riffenc"
2374 caf_demuxer_select="iso_media riffdec"
2375 dash_muxer_select="mp4_muxer"
2376 dirac_demuxer_select="dirac_parser"
2377 dv_demuxer_select="dvprofile"
2378 dv_muxer_select="dvprofile"
2379 dxa_demuxer_select="riffdec"
2380 eac3_demuxer_select="ac3_parser"
2381 f4v_muxer_select="mov_muxer"
2382 flac_demuxer_select="flac_parser"
2383 hds_muxer_select="flv_muxer"
2384 hls_muxer_select="mpegts_muxer"
2385 ipod_muxer_select="mov_muxer"
2386 ismv_muxer_select="mov_muxer"
2387 matroska_audio_muxer_select="matroska_muxer"
2388 matroska_demuxer_select="iso_media riffdec"
2389 matroska_demuxer_suggest="bzlib lzo zlib"
2390 matroska_muxer_select="iso_media riffenc"
2391 mmf_muxer_select="riffenc"
2392 mov_demuxer_select="iso_media riffdec"
2393 mov_demuxer_suggest="zlib"
2394 mov_muxer_select="iso_media riffenc rtpenc_chain"
2395 mp3_demuxer_select="mpegaudio_parser"
2396 mp3_muxer_select="mpegaudioheader"
2397 mp4_muxer_select="mov_muxer"
2398 mpegts_demuxer_select="iso_media"
2399 mpegts_muxer_select="adts_muxer latm_muxer"
2400 mpegtsraw_demuxer_select="mpegts_demuxer"
2401 mxf_d10_muxer_select="mxf_muxer"
2402 nut_muxer_select="riffenc"
2403 nuv_demuxer_select="riffdec"
2404 oga_muxer_select="ogg_muxer"
2405 ogg_demuxer_select="dirac_parse"
2406 opus_muxer_select="ogg_muxer"
2407 psp_muxer_select="mov_muxer"
2408 rtp_demuxer_select="sdp_demuxer"
2409 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2410 rtsp_demuxer_select="http_protocol rtpdec"
2411 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2412 sap_demuxer_select="sdp_demuxer"
2413 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2414 sdp_demuxer_select="rtpdec"
2415 smoothstreaming_muxer_select="ismv_muxer"
2416 spdif_demuxer_select="adts_header"
2417 spdif_muxer_select="adts_header"
2418 spx_muxer_select="ogg_muxer"
2419 swf_demuxer_suggest="zlib"
2420 tak_demuxer_select="tak_parser"
2421 tg2_muxer_select="mov_muxer"
2422 tgp_muxer_select="mov_muxer"
2423 w64_demuxer_select="wav_demuxer"
2424 wav_demuxer_select="riffdec"
2425 wav_muxer_select="riffenc"
2426 webm_muxer_select="iso_media riffenc"
2427 wtv_demuxer_select="mpegts_demuxer riffdec"
2428 xmv_demuxer_select="riffdec"
2429 xwma_demuxer_select="riffdec"
2430
2431 # indevs / outdevs
2432 alsa_indev_deps="alsa"
2433 alsa_outdev_deps="alsa"
2434 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2435 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2436 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2437 dv1394_indev_deps="dv1394"
2438 dv1394_indev_select="dv_demuxer"
2439 fbdev_indev_deps="linux_fb_h"
2440 jack_indev_deps="libjack"
2441 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2442 libcdio_indev_deps="libcdio"
2443 libdc1394_indev_deps="libdc1394"
2444 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2445 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2446 pulse_indev_deps="libpulse"
2447 sndio_indev_deps="sndio"
2448 sndio_outdev_deps="sndio"
2449 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2450 vfwcap_indev_deps="vfw32 vfwcap_defines"
2451 xcbgrab_indev_deps="libxcb libxcb_shape"
2452 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2453
2454 # protocols
2455 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2456 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2457 ffrtmpcrypt_protocol_select="tcp_protocol"
2458 ffrtmphttp_protocol_conflict="librtmp_protocol"
2459 ffrtmphttp_protocol_select="http_protocol"
2460 gopher_protocol_select="network"
2461 http_protocol_select="tcp_protocol"
2462 http_protocol_suggest="zlib"
2463 httpproxy_protocol_select="tcp_protocol"
2464 httpproxy_protocol_suggest="zlib"
2465 https_protocol_select="tls_protocol"
2466 https_protocol_suggest="zlib"
2467 icecast_protocol_select="http_protocol"
2468 librtmp_protocol_deps="librtmp"
2469 librtmpe_protocol_deps="librtmp"
2470 librtmps_protocol_deps="librtmp"
2471 librtmpt_protocol_deps="librtmp"
2472 librtmpte_protocol_deps="librtmp"
2473 mmsh_protocol_select="http_protocol"
2474 mmst_protocol_select="network"
2475 rtmp_protocol_conflict="librtmp_protocol"
2476 rtmp_protocol_select="tcp_protocol"
2477 rtmp_protocol_suggest="zlib"
2478 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2479 rtmpe_protocol_suggest="zlib"
2480 rtmps_protocol_conflict="librtmp_protocol"
2481 rtmps_protocol_select="tls_protocol"
2482 rtmps_protocol_suggest="zlib"
2483 rtmpt_protocol_select="ffrtmphttp_protocol"
2484 rtmpt_protocol_suggest="zlib"
2485 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2486 rtmpte_protocol_suggest="zlib"
2487 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2488 rtmpts_protocol_suggest="zlib"
2489 rtp_protocol_select="udp_protocol"
2490 sctp_protocol_deps="struct_sctp_event_subscribe"
2491 sctp_protocol_select="network"
2492 srtp_protocol_select="rtp_protocol srtp"
2493 tcp_protocol_select="network"
2494 tls_protocol_deps_any="gnutls openssl"
2495 tls_protocol_select="tcp_protocol"
2496 udp_protocol_select="network"
2497 unix_protocol_deps="sys_un_h"
2498 unix_protocol_select="network"
2499
2500 # filters
2501 asyncts_filter_deps="avresample"
2502 blackframe_filter_deps="gpl"
2503 boxblur_filter_deps="gpl"
2504 bs2b_filter_deps="libbs2b"
2505 cropdetect_filter_deps="gpl"
2506 deinterlace_qsv_filter_deps="libmfx"
2507 deinterlace_vaapi_filter_deps="vaapi"
2508 delogo_filter_deps="gpl"
2509 drawtext_filter_deps="libfreetype"
2510 drawtext_filter_suggest="libfontconfig"
2511 frei0r_filter_deps="frei0r libdl"
2512 frei0r_src_filter_deps="frei0r libdl"
2513 hdcd_filter_deps="libhdcd"
2514 hqdn3d_filter_deps="gpl"
2515 interlace_filter_deps="gpl"
2516 movie_filter_deps="avcodec avformat"
2517 ocv_filter_deps="libopencv"
2518 resample_filter_deps="avresample"
2519 scale_filter_deps="swscale"
2520 scale_qsv_filter_deps="libmfx"
2521 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2522
2523 # examples
2524 decode_audio_example_deps="avcodec avutil"
2525 decode_video_example_deps="avcodec avutil"
2526 encode_audio_example_deps="avcodec avutil"
2527 encode_video_example_deps="avcodec avutil"
2528 filter_audio_example_deps="avfilter avutil"
2529 metadata_example_deps="avformat avutil"
2530 output_example_deps="avcodec avformat avresample avutil swscale"
2531 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2532 transcode_aac_example_deps="avcodec avformat avresample"
2533
2534 # EXTRALIBS_LIST
2535 cpu_init_extralibs="pthreads_extralibs"
2536 cws2fws_extralibs="zlib_extralibs"
2537
2538 # libraries, in linking order
2539 avcodec_deps="avutil"
2540 avcodec_select="null_bsf"
2541 avdevice_deps="avformat avcodec avutil"
2542 avfilter_deps="avutil"
2543 avformat_deps="avcodec avutil"
2544 avformat_suggest="network"
2545 avresample_deps="avutil"
2546 swscale_deps="avutil"
2547
2548 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2549 avdevice_extralibs="libm_extralibs"
2550 avformat_extralibs="libm_extralibs"
2551 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2552 avresample_extralibs="libm_extralibs"
2553 avutil_extralibs="clock_gettime_extralibs cuda_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2554 swscale_extralibs="libm_extralibs"
2555
2556 # programs
2557 avconv_deps="avcodec avfilter avformat avresample swscale"
2558 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2559                fps_filter null_filter resample_filter scale_filter
2560                trim_filter"
2561 avconv_suggest="psapi shell32"
2562 avplay_deps="avcodec avfilter avformat avresample sdl"
2563 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2564 avplay_suggest="shell32"
2565 avprobe_deps="avcodec avformat"
2566 avprobe_suggest="shell32"
2567
2568 # documentation
2569 pod2man_deps="doc"
2570 texi2html_deps="doc"
2571
2572 # default parameters
2573
2574 logfile="avbuild/config.log"
2575
2576 # installation paths
2577 prefix_default="/usr/local"
2578 bindir_default='${prefix}/bin'
2579 datadir_default='${prefix}/share/avconv'
2580 docdir_default='${prefix}/share/doc/libav'
2581 incdir_default='${prefix}/include'
2582 libdir_default='${prefix}/lib'
2583 mandir_default='${prefix}/share/man'
2584 shlibdir_default="$libdir_default"
2585
2586 # toolchain
2587 ar_default="ar"
2588 cc_default="gcc"
2589 host_cc_default="gcc"
2590 x86asmexe_default="nasm"
2591 ln_s="ln -s -f"
2592 nm_default="nm -g"
2593 pkg_config_default=pkg-config
2594 ranlib="ranlib"
2595 strip="strip"
2596 version_script='--version-script'
2597
2598 # machine
2599 arch_default=$(uname -m)
2600 cpu="generic"
2601 intrinsics="none"
2602
2603 # OS
2604 target_os_default=$(tolower $(uname -s))
2605 host_os=$target_os_default
2606
2607 # configurable options
2608 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2609
2610 enable asm
2611 enable debug
2612 enable doc
2613 enable faan faandct faanidct
2614 enable optimizations
2615 enable safe_bitstream_reader
2616 enable static
2617 enable swscale_alpha
2618 enable valgrind_backtrace
2619
2620 # By default, enable only those hwaccels that have no external dependencies.
2621 enable d3d11va dxva2 vda vdpau
2622
2623 # internal components are enabled by default
2624 enable $EXTRALIBS_LIST
2625
2626 # Avoid external, non-system, libraries getting enabled by dependency resolution
2627 disable $EXTERNAL_LIBRARY_LIST
2628
2629 # build settings
2630 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2631 LIBPREF="lib"
2632 LIBSUF=".a"
2633 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2634 SLIBPREF="lib"
2635 SLIBSUF=".so"
2636 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2637 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2638 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2639 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2640 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2641 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2642 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2643
2644 asflags_filter=echo
2645 cflags_filter=echo
2646 ldflags_filter=echo
2647
2648 AS_C='-c'
2649 AS_O='-o $@'
2650 CC_C='-c'
2651 CC_E='-E -o $@'
2652 CC_O='-o $@'
2653 OBJCC_C='-c'
2654 OBJCC_E='-E -o $@'
2655 OBJCC_O='-o $@'
2656 X86ASM_O='-o $@'
2657 LD_O='-o $@'
2658 LD_LIB='-l%'
2659 LD_PATH='-L'
2660 HOSTCC_C='-c'
2661 HOSTCC_E='-E -o $@'
2662 HOSTCC_O='-o $@'
2663 HOSTLD_O='-o $@'
2664
2665 host_extralibs='-lm'
2666 host_cflags_filter=echo
2667 host_ldflags_filter=echo
2668
2669 target_path='$(CURDIR)'
2670
2671 # since the object filename is not given with the -MM flag, the compiler
2672 # is only able to print the basename, and we must add the path ourselves
2673 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2674 DEPFLAGS='-MM'
2675
2676 mkdir -p avbuild
2677
2678 # find source path
2679 if test -f configure; then
2680     source_path=.
2681 else
2682     source_path=$(cd $(dirname "$0"); pwd)
2683     echo "$source_path" | grep -q '[[:blank:]]' &&
2684         die "Out of tree builds are impossible with whitespace in source path."
2685     test -e "$source_path/config.h" &&
2686         die "Out of tree builds are impossible with config.h in source dir."
2687 fi
2688
2689 for v in "$@"; do
2690     r=${v#*=}
2691     l=${v%"$r"}
2692     r=$(sh_quote "$r")
2693     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2694 done
2695
2696 find_things(){
2697     thing=$1
2698     pattern=$2
2699     file=$source_path/$3
2700     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2701 }
2702
2703 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2704 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2705 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2706 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2707 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2708 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2709 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2710 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2711 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2712
2713 find_things_extern(){
2714     thing=$1
2715     pattern=$2
2716     file=$source_path/$3
2717     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2718 }
2719
2720 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2721 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2722
2723 AVCODEC_COMPONENTS_LIST="
2724     $BSF_LIST
2725     $DECODER_LIST
2726     $ENCODER_LIST
2727     $HWACCEL_LIST
2728     $PARSER_LIST
2729 "
2730
2731 AVDEVICE_COMPONENTS_LIST="
2732     $INDEV_LIST
2733     $OUTDEV_LIST
2734 "
2735
2736 AVFILTER_COMPONENTS_LIST="
2737     $FILTER_LIST
2738 "
2739
2740 AVFORMAT_COMPONENTS_LIST="
2741     $DEMUXER_LIST
2742     $MUXER_LIST
2743     $PROTOCOL_LIST
2744 "
2745
2746 ALL_COMPONENTS="
2747     $AVCODEC_COMPONENTS_LIST
2748     $AVDEVICE_COMPONENTS_LIST
2749     $AVFILTER_COMPONENTS_LIST
2750     $AVFORMAT_COMPONENTS_LIST
2751 "
2752
2753 for n in $COMPONENT_LIST; do
2754     v=$(toupper ${n%s})_LIST
2755     eval enable \$$v
2756     eval ${n}_if_any="\$$v"
2757 done
2758
2759 enable $ARCH_EXT_LIST
2760
2761 die_unknown(){
2762     echo "Unknown option \"$1\"."
2763     echo "See $0 --help for available options."
2764     exit 1
2765 }
2766
2767 print_3_columns() {
2768     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2769 }
2770
2771 show_list() {
2772     suffix=_$1
2773     shift
2774     echo $* | sed s/$suffix//g | print_3_columns
2775     exit 0
2776 }
2777
2778 rand_list(){
2779     IFS=', '
2780     set -- $*
2781     unset IFS
2782     for thing; do
2783         comp=${thing%:*}
2784         prob=${thing#$comp}
2785         prob=${prob#:}
2786         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2787         echo "prob ${prob:-0.5}"
2788         printf '%s\n' $comp
2789     done
2790 }
2791
2792 do_random(){
2793     action=$1
2794     shift
2795     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2796     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2797 }
2798
2799 for opt do
2800     optval="${opt#*=}"
2801     case "$opt" in
2802         --extra-ldflags=*)
2803             add_ldflags $optval
2804         ;;
2805         --extra-ldexeflags=*)
2806             add_ldexeflags $optval
2807         ;;
2808         --extra-libs=*)
2809             add_extralibs $optval
2810         ;;
2811         --disable-devices)
2812             disable $INDEV_LIST $OUTDEV_LIST
2813         ;;
2814         --enable-debug=*)
2815             debuglevel="$optval"
2816         ;;
2817         --disable-programs)
2818             disable $PROGRAM_LIST
2819         ;;
2820         --disable-everything)
2821             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2822         ;;
2823         --disable-all)
2824             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2825             disable $LIBRARY_LIST $PROGRAM_LIST doc
2826         ;;
2827         --enable-random|--disable-random)
2828             action=${opt%%-random}
2829             do_random ${action#--} $COMPONENT_LIST
2830         ;;
2831         --enable-random=*|--disable-random=*)
2832             action=${opt%%-random=*}
2833             do_random ${action#--} $optval
2834         ;;
2835         --enable-*=*|--disable-*=*)
2836             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2837             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2838             eval list=\$$(toupper $thing)_LIST
2839             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2840             $action $(filter "$name" $list)
2841         ;;
2842         --enable-avserver|--disable-avserver*)
2843             warn "avserver has been removed, the ${opt} option is only"\
2844                  "provided for compatibility and will be removed in the future"
2845         ;;
2846         --enable-yasm|--disable-yasm)
2847             warn "The ${opt} option is only provided for compatibility and will be\n"\
2848                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2849             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2850         ;;
2851         --enable-?*|--disable-?*)
2852             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2853             if is_in $option $COMPONENT_LIST; then
2854                 test $action = disable && action=unset
2855                 eval $action \$$(toupper ${option%s})_LIST
2856             elif is_in $option $CMDLINE_SELECT; then
2857                 $action $option
2858             else
2859                 die_unknown $opt
2860             fi
2861         ;;
2862         --list-*)
2863             NAME="${opt#--list-}"
2864             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2865             NAME=${NAME%s}
2866             eval show_list $NAME \$$(toupper $NAME)_LIST
2867         ;;
2868         --help|-h) show_help
2869         ;;
2870         --quiet|-q) quiet=yes
2871         ;;
2872         *)
2873             optname="${opt%%=*}"
2874             optname="${optname#--}"
2875             optname=$(echo "$optname" | sed 's/-/_/g')
2876             if is_in $optname $CMDLINE_SET; then
2877                 eval $optname='$optval'
2878             elif is_in $optname $CMDLINE_APPEND; then
2879                 append $optname "$optval"
2880             else
2881                 die_unknown $opt
2882             fi
2883         ;;
2884     esac
2885 done
2886
2887 for e in $env; do
2888     eval "export $e"
2889 done
2890
2891 disabled logging && logfile=/dev/null
2892
2893 # Die early if licensing-related configure options are incompatible.
2894 die_license_disabled() {
2895     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2896 }
2897
2898 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2899 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2900 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2901
2902 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2903
2904 enabled_all gnutls openssl &&
2905     die "GnuTLS and OpenSSL must not be enabled at the same time."
2906
2907 # Disable all the library-specific components if the library itself
2908 # is disabled, see AVCODEC_LIST and following _LIST variables.
2909
2910 disable_components(){
2911     disabled ${1} && disable $(
2912         eval components="\$$(toupper ${1})_COMPONENTS"
2913         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2914     )
2915 }
2916
2917 map 'disable_components $v' $LIBRARY_LIST
2918
2919 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2920 set >> $logfile
2921
2922 case "$toolchain" in
2923     *-asan)
2924         cc_default="${toolchain%-asan}"
2925         add_cflags  -fsanitize=address
2926         add_ldflags -fsanitize=address
2927     ;;
2928     *-msan)
2929         cc_default="${toolchain%-msan}"
2930         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2931         add_ldflags -fsanitize=memory
2932     ;;
2933     *-tsan)
2934         cc_default="${toolchain%-tsan}"
2935         add_cflags  -fsanitize=thread -fPIE
2936         add_ldflags -fsanitize=thread -pie
2937         case "$toolchain" in
2938             gcc-tsan)
2939                 add_cflags  -fPIC
2940                 add_ldflags -fPIC
2941                 ;;
2942         esac
2943     ;;
2944     *-usan)
2945         cc_default="${toolchain%-usan}"
2946         add_cflags  -fsanitize=undefined
2947         add_ldflags -fsanitize=undefined
2948         case "$toolchain" in
2949             clang-usan)
2950                 add_cflags -O1
2951                 ;;
2952         esac
2953     ;;
2954     valgrind-*)
2955         target_exec_default="valgrind"
2956         case "$toolchain" in
2957             valgrind-massif)
2958                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2959                 ;;
2960             valgrind-memcheck)
2961                 target_exec_args="--track-origins=yes --leak-check=full"
2962                 ;;
2963         esac
2964     ;;
2965     msvc)
2966         # Check whether the current MSVC version needs the C99 converter.
2967         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2968         # support enough of C99 to build libav. Default to the new
2969         # behaviour if the regexp was unable to match anything, since this
2970         # successfully parses the version number of existing supported
2971         # versions that require the converter (MSVC 2010 and 2012).
2972         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2973         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2974             cc_default="cl"
2975         else
2976             cc_default="c99wrap cl"
2977         fi
2978         ld_default="$source_path/compat/windows/mslink"
2979         nm_default="dumpbin -symbols"
2980         ar_default="lib"
2981         case "$arch" in
2982         arm*)
2983             as_default="armasm"
2984             ;;
2985         esac
2986         target_os_default="win32"
2987         # Use a relative path for TMPDIR. This makes sure all the
2988         # ffconf temp files are written with a relative path, avoiding
2989         # issues with msys/win32 path conversion for MSVC parameters
2990         # such as -Fo<file> or -out:<file>.
2991         TMPDIR=.
2992     ;;
2993     icl)
2994         cc_default="icl"
2995         ld_default="xilink"
2996         nm_default="dumpbin -symbols"
2997         ar_default="xilib"
2998         target_os_default="win32"
2999         TMPDIR=.
3000     ;;
3001     gcov)
3002         add_cflags  -fprofile-arcs -ftest-coverage
3003         add_ldflags -fprofile-arcs -ftest-coverage
3004     ;;
3005     llvm-cov)
3006         add_cflags -fprofile-arcs -ftest-coverage
3007         add_ldflags --coverage
3008     ;;
3009     hardened)
3010         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3011         add_cflags   -fno-strict-overflow -fstack-protector-all
3012         add_ldflags  -Wl,-z,relro -Wl,-z,now
3013     ;;
3014     ?*)
3015         die "Unknown toolchain $toolchain"
3016     ;;
3017 esac
3018
3019 test -n "$cross_prefix" && enable cross_compile
3020
3021 if enabled cross_compile; then
3022     test -n "$arch" && test -n "$target_os" ||
3023         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3024 fi
3025
3026 ar_default="${cross_prefix}${ar_default}"
3027 cc_default="${cross_prefix}${cc_default}"
3028 objcc_default="${cross_prefix}${objcc_default}"
3029 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3030 nm_default="${cross_prefix}${nm_default}"
3031 pkg_config_default="${cross_prefix}${pkg_config_default}"
3032 ranlib="${cross_prefix}${ranlib}"
3033 strip="${cross_prefix}${strip}"
3034
3035 sysinclude_default="${sysroot}/usr/include"
3036
3037 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3038 enabled cross_compile || host_cc_default=$cc
3039 set_default host_cc
3040
3041 if ! $pkg_config --version >/dev/null 2>&1; then
3042     warn "$pkg_config not found, library detection may fail."
3043     pkg_config=false
3044 fi
3045
3046 exesuf() {
3047     case $1 in
3048         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3049     esac
3050 }
3051
3052 EXESUF=$(exesuf $target_os)
3053 HOSTEXESUF=$(exesuf $host_os)
3054
3055 # set temporary file name
3056 : ${TMPDIR:=$TEMPDIR}
3057 : ${TMPDIR:=$TMP}
3058 : ${TMPDIR:=/tmp}
3059
3060 if ! check_cmd mktemp -u XXXXXX; then
3061     # simple replacement for missing mktemp
3062     # NOT SAFE FOR GENERAL USE
3063     mktemp(){
3064         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3065         echo "$tmpname"
3066         mkdir "$tmpname"
3067     }
3068 fi
3069
3070 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3071     die "Unable to create temporary directory in $TMPDIR."
3072
3073 tmpfile(){
3074     tmp="${AVTMPDIR}/test"$2
3075     (set -C; exec > $tmp) 2> /dev/null ||
3076         die "Unable to create temporary file in $AVTMPDIR."
3077     eval $1=$tmp
3078 }
3079
3080 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3081 trap 'exit 2' INT
3082
3083 tmpfile TMPASM .asm
3084 tmpfile TMPC   .c
3085 tmpfile TMPE   $EXESUF
3086 tmpfile TMPH   .h
3087 tmpfile TMPO   .o
3088 tmpfile TMPS   .S
3089 tmpfile TMPSH  .sh
3090 tmpfile TMPV   .ver
3091
3092 unset -f mktemp
3093
3094 chmod +x $TMPE
3095
3096 # make sure we can execute files in $TMPDIR
3097 cat > $TMPSH 2>> $logfile <<EOF
3098 #! /bin/sh
3099 EOF
3100 chmod +x $TMPSH >> $logfile 2>&1
3101 if ! $TMPSH >> $logfile 2>&1; then
3102     cat <<EOF
3103 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3104 variable to another directory and make sure that it is not mounted noexec.
3105 EOF
3106     die "Sanity test failed."
3107 fi
3108
3109 armasm_flags(){
3110     for flag; do
3111         case $flag in
3112             # Filter out MSVC cl.exe options from cflags that shouldn't
3113             # be passed to gas-preprocessor
3114             -M[TD]*)                                            ;;
3115             *)                  echo $flag                      ;;
3116         esac
3117    done
3118 }
3119
3120 ccc_flags(){
3121     for flag; do
3122         case $flag in
3123             -std=c99)           echo -c99                       ;;
3124             -mcpu=*)            echo -arch ${flag#*=}           ;;
3125             -mieee)             echo -ieee                      ;;
3126             -O*|-fast)          echo $flag                      ;;
3127             -fno-math-errno)    echo -assume nomath_errno       ;;
3128             -g)                 echo -g3                        ;;
3129             -Wall)              echo -msg_enable level2         ;;
3130             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3131             -Wl,*)              echo $flag                      ;;
3132             -f*|-W*)                                            ;;
3133             *)                  echo $flag                      ;;
3134         esac
3135    done
3136 }
3137
3138 cparser_flags(){
3139     for flag; do
3140         case $flag in
3141             -Wno-switch)             echo -Wno-switch-enum ;;
3142             -Wno-format-zero-length) ;;
3143             -Wdisabled-optimization) ;;
3144             -Wno-pointer-sign)       echo -Wno-other ;;
3145             *)                       echo $flag ;;
3146         esac
3147     done
3148 }
3149
3150 msvc_common_flags(){
3151     for flag; do
3152         case $flag in
3153             # In addition to specifying certain flags under the compiler
3154             # specific filters, they must be specified here as well or else the
3155             # generic catch all at the bottom will print the original flag.
3156             -Wall)                ;;
3157             -Wextra)              ;;
3158             -std=c99)             ;;
3159             # Common flags
3160             -fomit-frame-pointer) ;;
3161             -g)                   echo -Z7 ;;
3162             -fno-math-errno)      ;;
3163             -fno-common)          ;;
3164             -fno-signed-zeros)    ;;
3165             -fPIC)                ;;
3166             -mthumb)              ;;
3167             -march=*)             ;;
3168             -lz)                  echo zlib.lib ;;
3169             -lx264)               echo libx264.lib ;;
3170             -l*)                  echo ${flag#-l}.lib ;;
3171             -L*)                  echo -libpath:${flag#-L} ;;
3172             *)                    echo $flag ;;
3173         esac
3174     done
3175 }
3176
3177 msvc_flags(){
3178     msvc_common_flags "$@"
3179     for flag; do
3180         case $flag in
3181             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3182                                        -wd4554 ;;
3183             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3184                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3185                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3186                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3187         esac
3188     done
3189 }
3190
3191 icl_flags(){
3192     msvc_common_flags "$@"
3193     for flag; do
3194         case $flag in
3195             # Despite what Intel's documentation says -Wall, which is supported
3196             # on Windows, does enable remarks so disable them here.
3197             -Wall)                echo $flag -Qdiag-disable:remark ;;
3198             -std=c99)             echo -Qstd=c99 ;;
3199         esac
3200     done
3201 }
3202
3203 pgi_flags(){
3204     for flag; do
3205         case $flag in
3206             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3207             -fomit-frame-pointer) echo -Mnoframe ;;
3208             -g)                   echo -gopt ;;
3209             *)                    echo $flag ;;
3210         esac
3211     done
3212 }
3213
3214 suncc_flags(){
3215     for flag; do
3216         case $flag in
3217             -march=*|-mcpu=*)
3218                 case "${flag#*=}" in
3219                     native)                   echo -xtarget=native       ;;
3220                     v9|niagara)               echo -xarch=sparc          ;;
3221                     ultrasparc)               echo -xarch=sparcvis       ;;
3222                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3223                     i586|pentium)             echo -xchip=pentium        ;;
3224                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3225                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3226                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3227                     pentium4*)          echo -xtarget=pentium4           ;;
3228                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3229                     *-sse3)             echo -xarch=sse3                 ;;
3230                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3231                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3232                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3233                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3234                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3235                     k8|opteron|athlon64|athlon-fx)
3236                                                echo -xarch=sse2a         ;;
3237                     athlon*)                   echo -xarch=pentium_proa  ;;
3238                 esac
3239                 ;;
3240             -std=c99)             echo -xc99              ;;
3241             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3242             -fPIC)                echo -KPIC -xcode=pic32 ;;
3243             -W*,*)                echo $flag              ;;
3244             -f*-*|-W*|-mimpure-text)                      ;;
3245             -shared)              echo -G                 ;;
3246             *)                    echo $flag              ;;
3247         esac
3248     done
3249 }
3250
3251 tms470_flags(){
3252     for flag; do
3253         case $flag in
3254             -march=*|-mcpu=*)
3255                 case "${flag#*=}" in
3256                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3257                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3258                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3259                     armv6*|arm11*)          echo -mv=6   ;;
3260                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3261                                             echo -mv=5e  ;;
3262                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3263                 esac
3264                 ;;
3265             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3266             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3267             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3268             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3269             -msoft-float)   echo --float_support=vfplib       ;;
3270             -O[0-3]|-mf=*)  echo $flag                        ;;
3271             -g)             echo -g -mn                       ;;
3272             -pds=*)         echo $flag                        ;;
3273             -D*|-I*)        echo $flag                        ;;
3274             --gcc|--abi=*)  echo $flag                        ;;
3275             -me)            echo $flag                        ;;
3276         esac
3277     done
3278 }
3279
3280 probe_cc(){
3281     pfx=$1
3282     _cc=$2
3283
3284     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3285     unset _ld_o _ldflags _ld_lib _ld_path
3286     unset _depflags _DEPCMD _DEPFLAGS
3287     _flags_filter=echo
3288
3289     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3290         _type=llvm_gcc
3291         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3292         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3293         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3294         _cflags_speed='-O3'
3295         _cflags_size='-Os'
3296     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3297         _type=gcc
3298         gcc_version=$($_cc --version | head -n1)
3299         gcc_basever=$($_cc -dumpversion)
3300         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3301         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3302         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3303         if ! $_cc -dumpversion | grep -q '^2\.'; then
3304             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3305         fi
3306         _cflags_speed='-O3'
3307         _cflags_size='-Os'
3308     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3309         _type=icc
3310         _ident=$($_cc --version | head -n1)
3311         _depflags='-MMD'
3312         _cflags_speed='-O3'
3313         _cflags_size='-Os'
3314         _cflags_noopt='-O1'
3315     elif $_cc -v 2>&1 | grep -q xlc; then
3316         _type=xlc
3317         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3318         _cflags_speed='-O5'
3319         _cflags_size='-O5 -qcompact'
3320     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3321         _type=ccc
3322         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3323         _DEPFLAGS='-M'
3324         _cflags_speed='-fast'
3325         _cflags_size='-O1'
3326         _flags_filter=ccc_flags
3327     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3328         test -d "$sysroot" || die "No valid sysroot specified."
3329         _type=armcc
3330         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3331         armcc_conf="$PWD/armcc.conf"
3332         $_cc --arm_linux_configure                 \
3333              --arm_linux_config_file="$armcc_conf" \
3334              --configure_sysroot="$sysroot"        \
3335              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3336              die "Error creating armcc configuration file."
3337         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3338         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3339         as_default="${cross_prefix}gcc"
3340         _depflags='-MMD'
3341         _cflags_speed='-O3'
3342         _cflags_size='-Os'
3343     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3344         _type=tms470
3345         _ident=$($_cc -version | head -n1 | tr -s ' ')
3346         _flags='--gcc --abi=eabi -me'
3347         _cc_e='-ppl -fe=$@'
3348         _cc_o='-fe=$@'
3349         _depflags='-ppa -ppd=$(@:.o=.d)'
3350         _cflags_speed='-O3 -mf=5'
3351         _cflags_size='-O3 -mf=2'
3352         _flags_filter=tms470_flags
3353     elif $_cc -v 2>&1 | grep -q clang; then
3354         _type=clang
3355         _ident=$($_cc --version 2>/dev/null | head -n1)
3356         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3357         _cflags_speed='-O3'
3358         _cflags_size='-Os'
3359     elif $_cc -V 2>&1 | grep -q Sun; then
3360         _type=suncc
3361         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3362         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3363         _DEPFLAGS='-xM1 -xc99'
3364         _ldflags='-std=c99'
3365         _cflags_speed='-O5'
3366         _cflags_size='-O5 -xspace'
3367         _flags_filter=suncc_flags
3368     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3369         _type=pathscale
3370         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3371         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3372         _cflags_speed='-O2'
3373         _cflags_size='-Os'
3374         _flags_filter='filter_out -Wdisabled-optimization'
3375     elif $_cc -v 2>&1 | grep -q Open64; then
3376         _type=open64
3377         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3378         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3379         _cflags_speed='-O2'
3380         _cflags_size='-Os'
3381         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3382     elif $_cc -V 2>&1 | grep -q Portland; then
3383         _type=pgi
3384         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3385         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3386         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3387         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3388         _cflags_noopt="-O1"
3389         _flags_filter=pgi_flags
3390     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3391         _type=armasm
3392         _ident=$($_cc | head -n1)
3393         # 4509: "This form of conditional instruction is deprecated"
3394         _flags="-nologo -ignore 4509"
3395         _flags_filter=armasm_flags
3396     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3397         _type=msvc
3398         _ident=$($_cc 2>&1 | head -n1)
3399         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3400         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3401         _cflags_speed="-O2"
3402         _cflags_size="-O1"
3403         _cflags_noopt="-O1"
3404         if $_cc -nologo- 2>&1 | grep -q Linker; then
3405             _ld_o='-out:$@'
3406         else
3407             _ld_o='-Fe$@'
3408         fi
3409         _cc_o='-Fo$@'
3410         _cc_e='-P -Fi$@'
3411         _flags_filter=msvc_flags
3412         _ld_lib='lib%.a'
3413         _ld_path='-libpath:'
3414         _flags='-nologo'
3415     elif $_cc 2>&1 | grep -q Intel; then
3416         _type=icl
3417         _ident=$($_cc 2>&1 | head -n1)
3418         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3419         # Not only is O3 broken on 13.x+ but it is slower on all previous
3420         # versions (tested) as well.
3421         _cflags_speed="-O2"
3422         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3423         if $_cc 2>&1 | grep -q Linker; then
3424             _ld_o='-out:$@'
3425         else
3426             _ld_o='-Fe$@'
3427         fi
3428         _cc_o='-Fo$@'
3429         _cc_e='-P'
3430         _flags_filter=icl_flags
3431         _ld_lib='lib%.a'
3432         _ld_path='-libpath:'
3433         # -Qdiag-error to make icl error when seeing certain unknown arguments
3434         _flags='-nologo -Qdiag-error:4044,10157'
3435         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3436         # with MSVC which enables it by default.
3437         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3438     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3439         # lld can emulate multiple different linkers; in ms link.exe mode,
3440         # the -? parameter gives the help output which contains an identifyable
3441         # string, while it gives an error in other modes.
3442         _type=lld-link
3443         # The link.exe mode doesn't have a switch for getting the version,
3444         # but we can force it back to gnu mode and get the version from there.
3445         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3446         _ld_o='-out:$@'
3447         _flags_filter=msvc_flags
3448         _ld_lib='lib%.a'
3449         _ld_path='-libpath:'
3450     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3451         _type=cparser
3452         _ident=$($_cc --version | head -n1)
3453         _depflags='-MMD'
3454         _cflags_speed='-O4'
3455         _cflags_size='-O2'
3456         _flags_filter=cparser_flags
3457     fi
3458
3459     eval ${pfx}_type=\$_type
3460     eval ${pfx}_ident=\$_ident
3461 }
3462
3463 set_ccvars(){
3464     eval ${1}_C=\${_cc_c-\${${1}_C}}
3465     eval ${1}_E=\${_cc_e-\${${1}_E}}
3466     eval ${1}_O=\${_cc_o-\${${1}_O}}
3467
3468     if [ -n "$_depflags" ]; then
3469         eval ${1}_DEPFLAGS=\$_depflags
3470     else
3471         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3472         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3473         eval DEP${1}FLAGS=\$_flags
3474     fi
3475 }
3476
3477 probe_cc cc "$cc"
3478 cflags_filter=$_flags_filter
3479 cflags_speed=$_cflags_speed
3480 cflags_size=$_cflags_size
3481 cflags_noopt=$_cflags_noopt
3482 add_cflags $_flags $_cflags
3483 cc_ldflags=$_ldflags
3484 set_ccvars CC
3485
3486 probe_cc hostcc "$host_cc"
3487 host_cflags_filter=$_flags_filter
3488 host_cflags_speed=$_cflags_speed
3489 add_host_cflags  $_flags $_cflags
3490 set_ccvars HOSTCC
3491
3492 test -n "$cc_type" && enable $cc_type ||
3493     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3494
3495 : ${as_default:=$cc}
3496 : ${objcc_default:=$cc}
3497 : ${dep_cc_default:=$cc}
3498 : ${ld_default:=$cc}
3499 : ${host_ld_default:=$host_cc}
3500 set_default ar as objcc dep_cc ld host_ld
3501
3502 probe_cc as "$as"
3503 asflags_filter=$_flags_filter
3504 add_asflags $_flags $_cflags
3505 set_ccvars AS
3506
3507 probe_cc objcc "$objcc"
3508 objcflags_filter=$_flags_filter
3509 add_objcflags $_flags $_cflags
3510 set_ccvars OBJC
3511
3512 probe_cc ld "$ld"
3513 ldflags_filter=$_flags_filter
3514 add_ldflags $_flags $_ldflags
3515 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3516 LD_O=${_ld_o-$LD_O}
3517 LD_LIB=${_ld_lib-$LD_LIB}
3518 LD_PATH=${_ld_path-$LD_PATH}
3519
3520 probe_cc hostld "$host_ld"
3521 host_ldflags_filter=$_flags_filter
3522 add_host_ldflags $_flags $_ldflags
3523 HOSTLD_O=${_ld_o-$HOSTLD_O}
3524
3525 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3526     probe_cc depcc "$dep_cc"
3527     CCDEP=${_DEPCMD:-$DEPCMD}
3528     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3529     DEPCCFLAGS=$_flags
3530 fi
3531
3532 if $ar 2>&1 | grep -q Microsoft; then
3533     arflags="-nologo"
3534     ar_o='-out:$@'
3535 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3536     arflags="rq"
3537     ar_o='$@'
3538 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3539     arflags='-Xany -r -c'
3540     ar_o='$@'
3541 else
3542     arflags="rc"
3543     ar_o='$@'
3544 fi
3545
3546 add_cflags $extra_cflags
3547 add_objcflags $extra_objcflags
3548 add_asflags $extra_cflags
3549
3550 if test -n "$sysroot"; then
3551     case "$cc_type" in
3552         gcc|llvm_gcc|clang)
3553             add_cppflags --sysroot="$sysroot"
3554             add_ldflags --sysroot="$sysroot"
3555         ;;
3556         tms470)
3557             add_cppflags -I"$sysinclude"
3558             add_ldflags  --sysroot="$sysroot"
3559         ;;
3560     esac
3561 fi
3562
3563 if test "$cpu" = host; then
3564     enabled cross_compile &&
3565         die "--cpu=host makes no sense when cross-compiling."
3566
3567     case "$cc_type" in
3568         gcc|llvm_gcc)
3569             check_native(){
3570                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3571                 sed -n "/cc1.*$1=/{
3572                             s/.*$1=\\([^ ]*\\).*/\\1/
3573                             p
3574                             q
3575                         }" $TMPE
3576             }
3577             cpu=$(check_native -march || check_native -mcpu)
3578         ;;
3579     esac
3580
3581     test "${cpu:-host}" = host &&
3582         die "--cpu=host not supported with compiler $cc"
3583 fi
3584
3585 # Deal with common $arch aliases
3586 case "$arch" in
3587     aarch64|arm64)
3588         arch="aarch64"
3589     ;;
3590     arm*)
3591         arch="arm"
3592     ;;
3593     mips*|IP*)
3594         case "$arch" in
3595         *el)
3596             add_cppflags -EL
3597             add_ldflags -EL
3598         ;;
3599         *eb)
3600             add_cppflags -EB
3601             add_ldflags -EB
3602         ;;
3603         esac
3604         arch="mips"
3605     ;;
3606     parisc*|hppa*)
3607         arch="parisc"
3608     ;;
3609     "Power Macintosh"|ppc*|powerpc*)
3610         arch="ppc"
3611     ;;
3612     s390|s390x)
3613         arch="s390"
3614     ;;
3615     sh4|sh)
3616         arch="sh4"
3617     ;;
3618     sun4u|sparc*)
3619         arch="sparc"
3620     ;;
3621     tilegx|tile-gx)
3622         arch="tilegx"
3623     ;;
3624     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3625         arch="x86"
3626     ;;
3627 esac
3628
3629 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3630 enable $arch
3631
3632 # Add processor-specific flags
3633 if enabled aarch64; then
3634
3635     case $cpu in
3636         armv*)
3637             cpuflags="-march=$cpu"
3638         ;;
3639         *)
3640             cpuflags="-mcpu=$cpu"
3641         ;;
3642     esac
3643
3644 elif enabled alpha; then
3645
3646     cpuflags="-mcpu=$cpu"
3647
3648 elif enabled arm; then
3649
3650     check_arm_arch() {
3651         check_cpp_condition stddef.h \
3652             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3653             $cpuflags
3654     }
3655
3656     probe_arm_arch() {
3657         if   check_arm_arch 4;        then echo armv4
3658         elif check_arm_arch 4T;       then echo armv4t
3659         elif check_arm_arch 5;        then echo armv5
3660         elif check_arm_arch 5E;       then echo armv5e
3661         elif check_arm_arch 5T;       then echo armv5t
3662         elif check_arm_arch 5TE;      then echo armv5te
3663         elif check_arm_arch 5TEJ;     then echo armv5te
3664         elif check_arm_arch 6;        then echo armv6
3665         elif check_arm_arch 6J;       then echo armv6j
3666         elif check_arm_arch 6K;       then echo armv6k
3667         elif check_arm_arch 6Z;       then echo armv6z
3668         elif check_arm_arch 6ZK;      then echo armv6zk
3669         elif check_arm_arch 6T2;      then echo armv6t2
3670         elif check_arm_arch 7;        then echo armv7
3671         elif check_arm_arch 7A  7_A;  then echo armv7-a
3672         elif check_arm_arch 7S;       then echo armv7-a
3673         elif check_arm_arch 7R  7_R;  then echo armv7-r
3674         elif check_arm_arch 7M  7_M;  then echo armv7-m
3675         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3676         elif check_arm_arch 8A  8_A;  then echo armv8-a
3677         fi
3678     }
3679
3680     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3681
3682     case $cpu in
3683         armv*)
3684             cpuflags="-march=$cpu"
3685             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3686         ;;
3687         *)
3688             cpuflags="-mcpu=$cpu"
3689             case $cpu in
3690                 cortex-a*)                               subarch=armv7a  ;;
3691                 cortex-r*)                               subarch=armv7r  ;;
3692                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3693                 arm11*)                                  subarch=armv6   ;;
3694                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3695                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3696                 *)                             subarch=$(probe_arm_arch) ;;
3697             esac
3698         ;;
3699     esac
3700
3701     case "$subarch" in
3702         armv5t*)    enable fast_clz                ;;
3703         armv[6-8]*) enable fast_clz fast_unaligned ;;
3704     esac
3705
3706 elif enabled avr32; then
3707
3708     case $cpu in
3709         ap7[02]0[0-2])
3710             subarch="avr32_ap"
3711             cpuflags="-mpart=$cpu"
3712         ;;
3713         ap)
3714             subarch="avr32_ap"
3715             cpuflags="-march=$cpu"
3716         ;;
3717         uc3[ab]*)
3718             subarch="avr32_uc"
3719             cpuflags="-mcpu=$cpu"
3720         ;;
3721         uc)
3722             subarch="avr32_uc"
3723             cpuflags="-march=$cpu"
3724         ;;
3725     esac
3726
3727 elif enabled bfin; then
3728
3729     cpuflags="-mcpu=$cpu"
3730
3731 elif enabled mips; then
3732
3733     cpuflags="-march=$cpu"
3734
3735 elif enabled ppc; then
3736
3737     disable ldbrx
3738
3739     case $(tolower $cpu) in
3740         601|ppc601|powerpc601)
3741             cpuflags="-mcpu=601"
3742             disable altivec
3743         ;;
3744         603*|ppc603*|powerpc603*)
3745             cpuflags="-mcpu=603"
3746             disable altivec
3747         ;;
3748         604*|ppc604*|powerpc604*)
3749             cpuflags="-mcpu=604"
3750             disable altivec
3751         ;;
3752         g3|75*|ppc75*|powerpc75*)
3753             cpuflags="-mcpu=750"
3754             disable altivec
3755         ;;
3756         g4|745*|ppc745*|powerpc745*)
3757             cpuflags="-mcpu=7450"
3758             disable vsx
3759         ;;
3760         74*|ppc74*|powerpc74*)
3761             cpuflags="-mcpu=7400"
3762             disable vsx
3763         ;;
3764         g5|970|ppc970|powerpc970)
3765             cpuflags="-mcpu=970"
3766             disable vsx
3767         ;;
3768         power[3-6]*)
3769             cpuflags="-mcpu=$cpu"
3770             disable vsx
3771         ;;
3772         power[7-8]*)
3773             cpuflags="-mcpu=$cpu"
3774             enable ldbrx
3775         ;;
3776         cell)
3777             cpuflags="-mcpu=cell"
3778             enable ldbrx
3779             disable vsx
3780         ;;
3781         e500mc)
3782             cpuflags="-mcpu=e500mc"
3783             disable altivec
3784         ;;
3785         e500v2)
3786             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3787             disable altivec
3788             disable dcbzl
3789         ;;
3790         e500)
3791             cpuflags="-mcpu=8540 -mhard-float"
3792             disable altivec
3793             disable dcbzl
3794         ;;
3795     esac
3796
3797 elif enabled sparc; then
3798
3799     case $cpu in
3800         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3801             cpuflags="-mcpu=$cpu"
3802         ;;
3803         ultrasparc*|niagara[234])
3804             cpuflags="-mcpu=$cpu"
3805         ;;
3806     esac
3807
3808 elif enabled x86; then
3809
3810     case $cpu in
3811         i[345]86|pentium)
3812             cpuflags="-march=$cpu"
3813             disable i686
3814             disable mmx
3815         ;;
3816         # targets that do NOT support nopl and conditional mov (cmov)
3817         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3818             cpuflags="-march=$cpu"
3819             disable i686
3820         ;;
3821         # targets that do support nopl and conditional mov (cmov)
3822         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3823             cpuflags="-march=$cpu"
3824             enable i686
3825             enable fast_cmov
3826         ;;
3827         # targets that do support conditional mov but on which it's slow
3828         pentium4|pentium4m|prescott|nocona)
3829             cpuflags="-march=$cpu"
3830             enable i686
3831             disable fast_cmov
3832         ;;
3833     esac
3834
3835 fi
3836
3837 if [ "$cpu" != generic ]; then
3838     add_cflags  $cpuflags
3839     add_asflags $cpuflags
3840     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3841 fi
3842
3843 # compiler sanity check
3844 check_exec <<EOF
3845 int main(void){ return 0; }
3846 EOF
3847 if test "$?" != 0; then
3848     echo "$cc is unable to create an executable file."
3849     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3850         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3851         echo "Only do this if you know what cross compiling means."
3852     fi
3853     die "C compiler test failed."
3854 fi
3855
3856 add_cppflags -D_ISOC99_SOURCE
3857
3858 # some compilers silently accept -std=c11, so we also need to check that the
3859 # version macro is defined properly
3860 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3861     add_cflags -std=c11 ||
3862     check_cflags -std=c99
3863
3864 check_cppflags -D_FILE_OFFSET_BITS=64
3865 check_cppflags -D_LARGEFILE_SOURCE
3866
3867 add_host_cppflags -D_ISOC99_SOURCE
3868 check_host_cflags -std=c99
3869 check_host_cflags -Wall
3870 check_host_cflags $host_cflags_speed
3871
3872 check_64bit(){
3873     arch32=$1
3874     arch64=$2
3875     expr=$3
3876     check_code cc "" "int test[2*($expr) - 1]" &&
3877         subarch=$arch64 || subarch=$arch32
3878 }
3879
3880 case "$arch" in
3881     aarch64|alpha|ia64)
3882         spic=$shared
3883     ;;
3884     mips)
3885         check_64bit mips mips64 '_MIPS_SIM > 1'
3886         spic=$shared
3887     ;;
3888     parisc)
3889         check_64bit parisc parisc64 'sizeof(void *) > 4'
3890         spic=$shared
3891     ;;
3892     ppc)
3893         check_64bit ppc ppc64 'sizeof(void *) > 4'
3894         spic=$shared
3895     ;;
3896     s390)
3897         check_64bit s390 s390x 'sizeof(void *) > 4'
3898         spic=$shared
3899     ;;
3900     sparc)
3901         check_64bit sparc sparc64 'sizeof(void *) > 4'
3902         spic=$shared
3903     ;;
3904     x86)
3905         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3906         if test "$subarch" = "x86_64"; then
3907             spic=$shared
3908         fi
3909     ;;
3910 esac
3911
3912 enable $subarch
3913 enabled spic && enable_weak pic
3914
3915 enabled x86_64 && objformat=elf64 || objformat="elf32"
3916
3917 # OS specific
3918 case $target_os in
3919     aix)
3920         SHFLAGS=-shared
3921         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3922         enabled shared && add_ldflags -Wl,-brtl
3923         ;;
3924     android)
3925         disable symver
3926         enable section_data_rel_ro
3927         SLIB_INSTALL_NAME='$(SLIBNAME)'
3928         SLIB_INSTALL_LINKS=
3929         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3930         ;;
3931     haiku)
3932         prefix_default="/boot/common"
3933         network_extralibs="-lnetwork"
3934         host_extralibs=
3935         ;;
3936     sunos)
3937         SHFLAGS='-shared -Wl,-h,$$(@F)'
3938         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3939         network_extralibs="-lsocket -lnsl"
3940         # When using suncc to build, the Solaris linker will mark
3941         # an executable with each instruction set encountered by
3942         # the Solaris assembler.  As our libraries contain their own
3943         # guards for processor-specific code, instead suppress
3944         # generation of the HWCAPS ELF section on Solaris x86 only.
3945         enabled_all suncc x86 &&
3946             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3947             add_ldflags -Wl,-M,mapfile
3948         nm_default='nm -P -g'
3949         version_script='-M'
3950         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3951         ;;
3952     netbsd)
3953         disable symver
3954         oss_indev_extralibs="-lossaudio"
3955         oss_outdev_extralibs="-lossaudio"
3956         ;;
3957     openbsd|bitrig)
3958         disable symver
3959         SHFLAGS='-shared'
3960         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3961         SLIB_INSTALL_LINKS=
3962         oss_indev_extralibs="-lossaudio"
3963         oss_outdev_extralibs="-lossaudio"
3964         ;;
3965     dragonfly)
3966         disable symver
3967         ;;
3968     freebsd)
3969         ;;
3970     bsd/os)
3971         add_extralibs -lpoll -lgnugetopt
3972         ;;
3973     darwin)
3974         enabled ppc && add_asflags -force_cpusubtype_ALL
3975         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3976         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3977         add_ldflags -Wl,-dynamic,-search_paths_first
3978         check_cflags -Werror=partial-availability
3979         SLIBSUF=".dylib"
3980         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3981         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3982         enabled x86_64 && objformat="macho64" || objformat="macho32"
3983         enabled_any pic shared ||
3984             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3985         check_header dispatch/dispatch.h &&
3986             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3987         ;;
3988     msys*)
3989         die "Native MSYS builds are discouraged, please use the MINGW environment."
3990         ;;
3991     mingw32*|mingw64*)
3992         if test $target_os = "mingw32ce"; then
3993             disable network
3994         else
3995             target_os=mingw32
3996         fi
3997         LIBTARGET=i386
3998         if enabled x86_64; then
3999             LIBTARGET="i386:x86-64"
4000         elif enabled arm; then
4001             LIBTARGET=arm-wince
4002         fi
4003         check_ldflags -Wl,--nxcompat
4004         check_ldflags -Wl,--dynamicbase
4005         shlibdir_default="$bindir_default"
4006         SLIBPREF=""
4007         SLIBSUF=".dll"
4008         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4009         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4010         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4011         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4012         SLIB_INSTALL_LINKS=
4013         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4014         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4015         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4016         enabled x86_64 && objformat="win64" || objformat="win32"
4017         dlltool="${cross_prefix}dlltool"
4018         ranlib=:
4019         enable dos_paths
4020         ;;
4021     win32|win64)
4022         disable symver
4023         if enabled shared; then
4024             # Link to the import library instead of the normal static library
4025             # for shared libs.
4026             LD_LIB='%.lib'
4027             # Cannot build both shared and static libs with MSVC or icl.
4028             disable static
4029         fi
4030         shlibdir_default="$bindir_default"
4031         SLIBPREF=""
4032         SLIBSUF=".dll"
4033         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4034         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4035         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4036         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4037         SLIB_INSTALL_LINKS=
4038         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4039         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4040         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4041         enabled x86_64 && objformat="win64" || objformat="win32"
4042         ranlib=:
4043         enable dos_paths
4044         ;;
4045     cygwin*)
4046         target_os=cygwin
4047         shlibdir_default="$bindir_default"
4048         SLIBPREF="cyg"
4049         SLIBSUF=".dll"
4050         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4051         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4052         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4053         SLIB_INSTALL_LINKS=
4054         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4055         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4056         enabled x86_64 && objformat="win64" || objformat="win32"
4057         enable dos_paths
4058         ;;
4059     *-dos|freedos|opendos)
4060         network_extralibs="-lsocket"
4061         objformat="coff"
4062         enable dos_paths
4063         add_cppflags -U__STRICT_ANSI__
4064         ;;
4065     linux)
4066         enable dv1394
4067         enable section_data_rel_ro
4068         ;;
4069     irix*)
4070         target_os=irix
4071         ranlib="echo ignoring ranlib"
4072         ;;
4073     os/2*)
4074         ln_s="cp -f"
4075         objformat="aout"
4076         add_cppflags -D_GNU_SOURCE
4077         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4078         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4079         LIBSUF="_s.a"
4080         SLIBPREF=""
4081         SLIBSUF=".dll"
4082         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4083         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4084         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4085             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4086             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4087             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4088             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4089         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4090             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4091         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4092         enable dos_paths
4093         ;;
4094     gnu/kfreebsd)
4095         add_cppflags -D_BSD_SOURCE
4096         ;;
4097     gnu)
4098         ;;
4099     qnx)
4100         add_cppflags -D_QNX_SOURCE
4101         network_extralibs="-lsocket"
4102         ;;
4103     symbian)
4104         SLIBSUF=".dll"
4105         enable dos_paths
4106         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4107         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4108         add_ldflags -Wl,--target1-abs,--no-undefined \
4109                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4110                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4111         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4112                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4113                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4114         ;;
4115     osf1)
4116         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4117         ;;
4118     minix)
4119         ;;
4120     none)
4121         ;;
4122     *)
4123         die "Unknown OS '$target_os'."
4124         ;;
4125 esac
4126
4127 # determine libc flavour
4128
4129 probe_libc(){
4130     pfx=$1
4131     pfx_no_=${pfx%_}
4132     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4133     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4134         eval ${pfx}libc_type=uclibc
4135         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4136     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4137         eval ${pfx}libc_type=glibc
4138         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4139     # MinGW headers can be installed on Cygwin, so check for newlib first.
4140     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4141         eval ${pfx}libc_type=newlib
4142         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4143     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4144     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4145         eval ${pfx}libc_type=mingw64
4146         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4147         eval test \$${pfx_no_}cc_type = "gcc" &&
4148             add_${pfx}cppflags -D__printf__=__gnu_printf__
4149     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4150          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4151         eval ${pfx}libc_type=mingw32
4152         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4153             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4154             die "ERROR: MinGW32 runtime version must be >= 3.15."
4155         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4156         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4157             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4158         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4159             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4160         eval test \$${pfx_no_}cc_type = "gcc" &&
4161             add_${pfx}cppflags -D__printf__=__gnu_printf__
4162     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4163         eval ${pfx}libc_type=msvcrt
4164         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4165             if [ "$pfx" = host_ ]; then
4166                 add_host_cppflags -Dsnprintf=_snprintf
4167             else
4168                 add_compat strtod.o strtod=avpriv_strtod
4169                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4170                                              _snprintf=avpriv_snprintf  \
4171                                              vsnprintf=avpriv_vsnprintf
4172             fi
4173         fi
4174         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4175         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4176         # 0x601 by default unless something else is set by the user.
4177         # This can easily lead to us detecting functions only present
4178         # in such new versions and producing binaries requiring windows 7.0.
4179         # Therefore explicitly set the default to XP unless the user has
4180         # set something else on the command line.
4181         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4182         # family. For these cases, configure is free to use any functions
4183         # found in the SDK headers by default. (Alternatively, we could force
4184         # _WIN32_WINNT to 0x0602 in that case.)
4185         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4186             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4187 #ifdef WINAPI_FAMILY
4188 #include <winapifamily.h>
4189 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4190 #error not desktop
4191 #endif
4192 #endif
4193 EOF
4194         if [ "$pfx" = "" ]; then
4195             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4196         fi
4197     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4198         eval ${pfx}libc_type=klibc
4199     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4200         eval ${pfx}libc_type=bionic
4201     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4202         eval ${pfx}libc_type=solaris
4203         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4204     else
4205         eval ${pfx}libc_type=default
4206         add_${pfx}cppflags -D_DEFAULT_SOURCE
4207     fi
4208 }
4209
4210 probe_libc
4211 test -n "$libc_type" && enable libc_$libc_type
4212 probe_libc host_
4213 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4214
4215 # hacks for compiler/libc/os combinations
4216
4217 case $libc_type in
4218     bionic)
4219         add_compat strtod.o strtod=avpriv_strtod
4220         ;;
4221     glibc)
4222         if enabled tms470; then
4223             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4224             add_cppflags -D__USER_LABEL_PREFIX__=
4225             add_cppflags -D__builtin_memset=memset
4226             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4227             add_cflags   -pds=48    # incompatible redefinition of macro
4228         elif enabled ccc; then
4229             add_ldflags -Wl,-z,now  # calls to libots crash without this
4230         fi
4231         ;;
4232 esac
4233
4234 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4235     add_cppflags '-I\$(SRC_PATH)/compat/float'
4236
4237 esc(){
4238     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4239 }
4240
4241 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4242
4243 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4244
4245 set_default $PATHS_LIST
4246 set_default nm
4247
4248 # we need to build at least one lib type
4249 if ! enabled_any static shared; then
4250     cat <<EOF
4251 At least one library type must be built.
4252 Specify --enable-static to build the static libraries or --enable-shared to
4253 build the shared libraries as well. To only build the shared libraries specify
4254 --disable-static in addition to --enable-shared.
4255 EOF
4256     exit 1
4257 fi
4258
4259 disabled optimizations || check_cflags -fomit-frame-pointer
4260
4261 enable_weak_pic() {
4262     disabled pic && return
4263     enable pic
4264     add_cppflags -DPIC
4265     case "$target_os" in
4266     mingw*|cygwin*)
4267         ;;
4268     *)
4269         add_cflags -fPIC
4270         ;;
4271     esac
4272     add_asflags  -fPIC
4273 }
4274
4275 enabled pic && enable_weak_pic
4276
4277 check_cc <<EOF || die "Symbol mangling check failed."
4278 int ff_extern;
4279 EOF
4280 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4281 extern_prefix=${sym%%ff_extern*}
4282
4283 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4284
4285 _restrict=
4286 for restrict_keyword in restrict __restrict__ __restrict; do
4287     check_cc <<EOF && _restrict=$restrict_keyword && break
4288 void foo(char * $restrict_keyword p);
4289 EOF
4290 done
4291
4292 check_cc <<EOF && enable pragma_deprecated
4293 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4294 EOF
4295
4296 check_cc <<EOF && enable attribute_packed
4297 struct { int x; } __attribute__((packed)) x;
4298 EOF
4299
4300 check_cc <<EOF && enable attribute_may_alias
4301 union { int x; } __attribute__((may_alias)) x;
4302 EOF
4303
4304 check_cc <<EOF || die "endian test failed"
4305 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4306 EOF
4307 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4308
4309 check_gas() {
4310     log "check_gas using '$as' as AS"
4311     # :vararg is used on aarch64, arm and ppc altivec
4312     check_as <<EOF || return 1
4313 .macro m n, y:vararg=0
4314 \n: .int \y
4315 .endm
4316 m x
4317 EOF
4318     # .altmacro is only used in arm asm
4319     ! enabled arm || check_as <<EOF || return 1
4320 .altmacro
4321 EOF
4322     enable gnu_as
4323     return 0
4324 }
4325
4326 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4327     nogas=:
4328     enabled_any arm aarch64 && nogas=die
4329     enabled_all ppc altivec && nogas=warn
4330     as_noop=-v
4331
4332     case $as_type in
4333         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4334         gcc)  gaspp_as_type=gas ;;
4335         *)    gaspp_as_type=$as_type ;;
4336     esac
4337
4338     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4339
4340     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4341         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4342
4343     if ! check_gas ; then
4344         as=${gas:=$as}
4345         check_gas || \
4346             $nogas "GNU assembler not found, install/update gas-preprocessor"
4347     fi
4348
4349     check_as <<EOF && enable as_func
4350 .func test
4351 .endfunc
4352 EOF
4353 fi
4354
4355 check_inline_asm inline_asm_labels '"1:\n"'
4356
4357 if enabled aarch64; then
4358     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4359     # internal assembler in clang 3.3 does not support this instruction
4360     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4361     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4362
4363     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4364
4365 elif enabled alpha; then
4366
4367     check_cflags -mieee
4368
4369 elif enabled arm; then
4370
4371     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4372     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4373     enabled thumb && check_cflags -mthumb || check_cflags -marm
4374
4375     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4376         enable vfp_args
4377     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4378         enable vfp_args
4379     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4380         case "${cross_prefix:-$cc}" in
4381             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4382             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4383 __asm__ (".eabi_attribute 28, 1");
4384 int main(void) { return 0; }
4385 EOF
4386         esac
4387         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4388     fi
4389
4390     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4391     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4392     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4393     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4394     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4395     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4396
4397     [ $target_os = linux ] || [ $target_os = android ] ||
4398         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4399             $ARCH_EXT_LIST_ARM
4400
4401     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4402
4403     check_as <<EOF && enable as_arch_directive
4404 .arch armv7-a
4405 EOF
4406     check_as <<EOF && enable as_fpu_directive
4407 .fpu neon
4408 EOF
4409
4410     # llvm's integrated assembler supports .object_arch from llvm 3.5
4411     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4412         check_as <<EOF && enable as_object_arch
4413 .object_arch armv4
4414 EOF
4415
4416     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4417
4418 elif enabled mips; then
4419
4420     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4421
4422     # make sure that only an instruction set is enabled
4423     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4424
4425     if enabled mips64; then
4426         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4427             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4428                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4429     else
4430         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4431             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4432                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4433     fi
4434
4435 elif enabled parisc; then
4436
4437     if enabled gcc; then
4438         case $($cc -dumpversion) in
4439             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4440         esac
4441     fi
4442
4443 elif enabled ppc; then
4444
4445     enable local_aligned_8 local_aligned_16 local_aligned_32
4446
4447     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4448     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4449     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4450     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4451
4452     if enabled altivec; then
4453         check_cflags -maltivec -mabi=altivec
4454
4455         # check if our compiler supports Motorola AltiVec C API
4456         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4457                                  vector signed int v2 = (vector signed int) { 1 };
4458                                  v1 = vec_add(v1, v2);" ||
4459             disable altivec
4460
4461         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4462     fi
4463
4464     if enabled vsx; then
4465         check_cflags -mvsx &&
4466         check_code cc altivec.h "int v[4] = { 0 };
4467                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4468             disable vsx
4469     fi
4470
4471     if enabled power8; then
4472         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4473     fi
4474
4475 elif enabled x86; then
4476
4477     check_builtin rdtsc    intrin.h   "__rdtsc()"
4478     check_builtin mm_empty mmintrin.h "_mm_empty()"
4479
4480     enable local_aligned_8 local_aligned_16 local_aligned_32
4481
4482     # check whether EBP is available on x86
4483     # As 'i' is stored on the stack, this program will crash
4484     # if the base pointer is used to access it because the
4485     # base pointer is cleared in the inline assembly code.
4486     check_exec_crash <<EOF && enable ebp_available
4487 volatile int i=0;
4488 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4489 return i;
4490 EOF
4491
4492     # check whether EBX is available on x86
4493     check_inline_asm ebx_available '""::"b"(0)' &&
4494         check_inline_asm ebx_available '"":::"%ebx"'
4495
4496     # check whether xmm clobbers are supported
4497     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4498
4499     # check whether binutils is new enough to compile SSSE3/MMXEXT
4500     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4501     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4502
4503     probe_x86asm(){
4504         x86asmexe_probe=$1
4505         if check_cmd $x86asmexe_probe -v; then
4506             x86asmexe=$x86asmexe_probe
4507             x86asm_type=nasm
4508             x86asm_debug="-g -F dwarf"
4509             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4510         elif check_cmd $x86asmexe_probe --version; then
4511             x86asmexe=$x86asmexe_probe
4512             x86asm_type=yasm
4513             x86asm_debug="-g dwarf2"
4514             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4515         fi
4516         check_x86asm "movbe ecx, [5]" && enable x86asm
4517     }
4518
4519     if ! disabled_any asm mmx x86asm; then
4520         disable x86asm
4521         for program in $x86asmexe nasm yasm; do
4522             probe_x86asm $program && break
4523         done
4524         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4525         X86ASMFLAGS="-f $objformat"
4526         enabled pic               && append X86ASMFLAGS "-DPIC"
4527         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4528         case "$objformat" in
4529             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4530         esac
4531
4532         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4533         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4534         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4535         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4536         check_x86asm "CPU amdnop"                      || disable cpunop
4537     fi
4538
4539     case "$cpu" in
4540         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4541             disable fast_clz
4542         ;;
4543     esac
4544
4545 fi
4546
4547 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4548
4549 check_ldflags -Wl,--as-needed
4550
4551 if ! disabled network; then
4552     check_func getaddrinfo $network_extralibs
4553     check_func inet_aton $network_extralibs
4554
4555     check_type netdb.h "struct addrinfo"
4556     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4557     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4558     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4559     check_type poll.h "struct pollfd"
4560     check_type netinet/sctp.h "struct sctp_event_subscribe"
4561     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4562     check_type netinet/in.h "struct sockaddr_in6"
4563     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4564     check_type "sys/types.h sys/socket.h" socklen_t
4565
4566     # Prefer arpa/inet.h over winsock2
4567     if check_header arpa/inet.h ; then
4568         check_func closesocket
4569     elif check_header winsock2.h ; then
4570         check_func_headers winsock2.h closesocket -lws2 &&
4571             network_extralibs="-lws2" ||
4572         { check_func_headers winsock2.h closesocket -lws2_32 &&
4573             network_extralibs="-lws2_32"; } || disable winsock2_h network
4574         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4575
4576         check_type ws2tcpip.h socklen_t
4577         check_type ws2tcpip.h "struct addrinfo"
4578         check_type ws2tcpip.h "struct group_source_req"
4579         check_type ws2tcpip.h "struct ip_mreq_source"
4580         check_type ws2tcpip.h "struct ipv6_mreq"
4581         check_type winsock2.h "struct pollfd"
4582         check_struct winsock2.h "struct sockaddr" sa_len
4583         check_type ws2tcpip.h "struct sockaddr_in6"
4584         check_type ws2tcpip.h "struct sockaddr_storage"
4585     else
4586         disable network
4587     fi
4588 fi
4589
4590 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4591 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4592 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4593 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4594
4595 case "$custom_allocator" in
4596     jemalloc)
4597         # jemalloc by default does not use a prefix
4598         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4599     ;;
4600     tcmalloc)
4601         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4602         malloc_prefix=tc_
4603     ;;
4604 esac
4605
4606 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4607 check_func  ${malloc_prefix}memalign            && enable memalign
4608 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4609
4610 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4611     { check_lib clock_gettime time.h clock_gettime ||
4612       check_lib clock_gettime time.h clock_gettime -lrt; }
4613
4614 check_func  fcntl
4615 check_func  fork
4616 check_func  gethrtime
4617 check_func  getopt
4618 check_func  getrusage
4619 check_func  gettimeofday
4620 check_func  gmtime_r
4621 check_func  isatty
4622 check_func  localtime_r
4623 check_func  mach_absolute_time
4624 check_func  mkstemp
4625 check_func  mmap
4626 check_func  mprotect
4627 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4628 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4629 check_func  sched_getaffinity
4630 check_func  setrlimit
4631 check_func  strerror_r
4632 check_func  sysconf
4633 check_func  sysctl
4634 check_func  usleep
4635
4636 check_func_headers io.h setmode
4637 check_func_headers stdlib.h getenv
4638
4639 check_func_headers windows.h GetProcessAffinityMask
4640 check_func_headers windows.h GetProcessTimes
4641 check_func_headers windows.h GetSystemTimeAsFileTime
4642 check_func_headers windows.h LoadLibrary
4643 check_func_headers windows.h MapViewOfFile
4644 check_func_headers windows.h SetConsoleTextAttribute
4645 check_func_headers windows.h Sleep
4646 check_func_headers windows.h VirtualAlloc
4647 check_struct windows.h "CONDITION_VARIABLE" Ptr
4648
4649 check_header d3d11.h
4650 check_header direct.h
4651 check_header dlfcn.h
4652 check_header dxva.h
4653 check_header dxva2api.h
4654 check_header io.h
4655 check_header mach/mach_time.h
4656 check_header malloc.h
4657 check_header poll.h
4658 check_header sys/mman.h
4659 check_header sys/param.h
4660 check_header sys/resource.h
4661 check_header sys/select.h
4662 check_header sys/time.h
4663 check_header sys/un.h
4664 check_header unistd.h
4665 check_header valgrind/valgrind.h
4666 check_header VideoDecodeAcceleration/VDADecoder.h
4667 check_header windows.h
4668
4669 # it seems there are versions of clang in some distros that try to use the
4670 # gcc headers, which explodes for stdatomic
4671 # so we also check that atomics actually work here
4672 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4673
4674 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4675 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4676 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4677 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4678
4679 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4680
4681 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4682 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4683 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4684
4685 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4686 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4687 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4688 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4689 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4690 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4691 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4692 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4693 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4694
4695 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4696
4697 if ! disabled w32threads && ! enabled pthreads; then
4698     check_lib w32threads "windows.h process.h" _beginthreadex
4699 fi
4700
4701 # check for some common methods of building with pthread support
4702 # do this before the optional library checks as some of them require pthreads
4703 if ! disabled pthreads && ! enabled w32threads; then
4704     if check_lib pthreads pthread.h pthread_join -pthread; then
4705         add_cflags -pthread
4706     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4707         add_cflags -pthreads
4708     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4709         :
4710     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4711         :
4712     elif check_func pthread_join; then
4713         enable pthreads
4714     fi
4715 fi
4716
4717 enabled pthreads &&
4718     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4719
4720 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4721 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4722
4723 # On some systems dynamic loading requires no extra linker flags
4724 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4725
4726 check_lib libm math.h sin -lm
4727
4728 atan2f_args=2
4729 ldexpf_args=2
4730 powf_args=2
4731
4732 for func in $MATH_FUNCS; do
4733     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4734 done
4735
4736 # these are off by default, so fail if requested and not available
4737 enabled avisynth          && require_header avisynth/avisynth_c.h
4738 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4739 enabled cuda              && require cuda cuda.h cuInit -lcuda
4740 enabled frei0r            && require_header frei0r.h
4741 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4742 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4743 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4744 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4745 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4746 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4747 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4748 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4749 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4750                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4751                                done || die "ERROR: libgsm not found"; }
4752 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4753 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4754 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4755 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4756 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4757 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4758 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4759 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4760 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4761 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4762 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4763                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4764 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4765 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4766 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4767 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4768 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4769 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4770 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4771 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4772 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4773 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4774 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4775 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4776                              { enabled libvpx_vp8_decoder &&
4777                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4778                                enabled libvpx_vp8_encoder &&
4779                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4780                                enabled libvpx_vp9_decoder &&
4781                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4782                                enabled libvpx_vp9_encoder &&
4783                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4784                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4785                                    die "libvpx enabled but no supported decoders/encoders found"
4786                              }
4787 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4788 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4789 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4790                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4791                              { check_cpp_condition x264.h "X264_MPEG2" &&
4792                                enable libx262; }
4793 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4794                              require_cpp_condition x265.h "X265_BUILD >= 57"
4795 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4796 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4797 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4798                                { ! enabled cross_compile &&
4799                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4800                                  add_ldflags -L/opt/vc/lib/ &&
4801                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4802                                die "ERROR: mmal not found" &&
4803                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4804 enabled omx               && require_header OMX_Core.h
4805 enabled omx_rpi           && { check_header OMX_Core.h ||
4806                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4807                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4808 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4809                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4810                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4811                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4812                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4813                                die "ERROR: openssl not found"; }
4814
4815 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4816
4817 if enabled nvenc; then
4818     require_header nvEncodeAPI.h
4819     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4820 fi
4821
4822 # SDL is "special" and adds some CFLAGS that should not pollute anything else.
4823 if enabled avplay; then
4824     CFLAGS_SAVE=$CFLAGS
4825     check_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent &&
4826     sdl_cflags=$pkg_cflags
4827     CFLAGS=$CFLAGS_SAVE
4828 fi
4829
4830 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4831 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4832
4833 check_header linux/fb.h
4834 check_header linux/videodev2.h
4835 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4836
4837 check_header AVFoundation/AVFoundation.h
4838
4839 check_header sys/videoio.h
4840
4841 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4842 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4843 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4844 # w32api 3.12 had it defined wrong
4845 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4846
4847 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4848 { check_header dev/bktr/ioctl_meteor.h &&
4849   check_header dev/bktr/ioctl_bt848.h; } ||
4850 { check_header machine/ioctl_meteor.h &&
4851   check_header machine/ioctl_bt848.h; } ||
4852 { check_header dev/video/meteor/ioctl_meteor.h &&
4853   check_header dev/video/bktr/ioctl_bt848.h; } ||
4854 check_header dev/ic/bt8xx.h
4855
4856 check_header sys/soundcard.h
4857 check_header soundcard.h
4858
4859 enabled_any alsa_indev alsa_outdev &&
4860     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4861
4862 enabled libjack &&
4863     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4864
4865 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4866
4867 if enabled libcdio; then
4868     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4869     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4870     die "ERROR: No usable libcdio/cdparanoia found"
4871 fi
4872
4873 if enabled libxcb; then
4874     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4875     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4876     disabled libxcb_shm ||
4877         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4878     disabled libxcb_xfixes ||
4879         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4880 fi
4881
4882 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4883
4884 enabled vaapi &&
4885     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4886     disable vaapi
4887
4888 enabled vaapi &&
4889     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4890
4891 enabled vaapi &&
4892     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4893
4894 enabled vdpau &&
4895     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4896     disable vdpau
4897
4898 enabled vdpau &&
4899     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4900
4901 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4902
4903 # add some useful compiler flags if supported
4904 check_cflags -Wdeclaration-after-statement
4905 check_cflags -Wall
4906 check_cflags -Wdisabled-optimization
4907 check_cflags -Wpointer-arith
4908 check_cflags -Wredundant-decls
4909 check_cflags -Wwrite-strings
4910 check_cflags -Wtype-limits
4911 check_cflags -Wundef
4912 check_cflags -Wmissing-prototypes
4913 check_cflags -Wstrict-prototypes
4914
4915 if enabled extra_warnings; then
4916     check_cflags -Wcast-qual
4917     check_cflags -Wextra
4918     check_cflags -Wpedantic
4919 fi
4920
4921 check_disable_warning(){
4922     warning_flag=-W${1#-Wno-}
4923     test_cflags $warning_flag && add_cflags $1
4924 }
4925
4926 check_disable_warning -Wno-parentheses
4927 check_disable_warning -Wno-switch
4928 check_disable_warning -Wno-format-zero-length
4929 check_disable_warning -Wno-pointer-sign
4930
4931 check_disable_warning_headers(){
4932     warning_flag=-W${1#-Wno-}
4933     test_cflags $warning_flag && add_cflags_headers $1
4934 }
4935
4936 check_disable_warning_headers -Wno-deprecated-declarations
4937 check_disable_warning_headers -Wno-unused-variable
4938
4939 check_objcflags -fobjc-arc && enable objc_arc
4940
4941 check_cc <<EOF && enable blocks_extension
4942 void (^block)(void);
4943 EOF
4944
4945 # add some linker flags
4946 check_ldflags -Wl,--warn-common
4947 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4948 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4949 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4950
4951 # add some strip flags
4952 # -wN '..@*' is more selective than -x, but not available everywhere.
4953 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4954
4955 enabled neon_clobber_test &&
4956     check_ldflags -Wl,--wrap,avcodec_open2              \
4957                   -Wl,--wrap,avcodec_decode_audio4      \
4958                   -Wl,--wrap,avcodec_decode_video2      \
4959                   -Wl,--wrap,avcodec_decode_subtitle2   \
4960                   -Wl,--wrap,avcodec_encode_audio2      \
4961                   -Wl,--wrap,avcodec_encode_video2      \
4962                   -Wl,--wrap,avcodec_encode_subtitle    \
4963                   -Wl,--wrap,avcodec_send_packet        \
4964                   -Wl,--wrap,avcodec_receive_packet     \
4965                   -Wl,--wrap,avcodec_send_frame         \
4966                   -Wl,--wrap,avcodec_receive_frame      \
4967                   -Wl,--wrap,avresample_convert ||
4968     disable neon_clobber_test
4969
4970 enabled xmm_clobber_test &&
4971     check_ldflags -Wl,--wrap,avcodec_open2              \
4972                   -Wl,--wrap,avcodec_decode_audio4      \
4973                   -Wl,--wrap,avcodec_decode_video2      \
4974                   -Wl,--wrap,avcodec_decode_subtitle2   \
4975                   -Wl,--wrap,avcodec_encode_audio2      \
4976                   -Wl,--wrap,avcodec_encode_video2      \
4977                   -Wl,--wrap,avcodec_encode_subtitle    \
4978                   -Wl,--wrap,avcodec_send_packet        \
4979                   -Wl,--wrap,avcodec_receive_packet     \
4980                   -Wl,--wrap,avcodec_send_frame         \
4981                   -Wl,--wrap,avcodec_receive_frame      \
4982                   -Wl,--wrap,avresample_convert         \
4983                   -Wl,--wrap,sws_scale ||
4984     disable xmm_clobber_test
4985
4986 check_ld <<EOF && enable proper_dce
4987 extern const int array[512];
4988 static inline int func(void) { return array[0]; }
4989 int main(void) { return 0; }
4990 EOF
4991
4992 if enabled proper_dce; then
4993     echo "X { local: *; };" > $TMPV
4994     if test_ldflags -Wl,${version_script},$TMPV; then
4995         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
4996         check_cc <<EOF && enable symver_asm_label
4997 void ff_foo(void) __asm__ ("av_foo@VERSION");
4998 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4999 EOF
5000         check_cc <<EOF && enable symver_gnu_asm
5001 __asm__(".symver ff_foo,av_foo@VERSION");
5002 void ff_foo(void) {}
5003 EOF
5004     fi
5005 fi
5006
5007 if [ -z "$optflags" ]; then
5008     if enabled small; then
5009         optflags=$cflags_size
5010     elif enabled optimizations; then
5011         optflags=$cflags_speed
5012     else
5013         optflags=$cflags_noopt
5014     fi
5015 fi
5016
5017 check_optflags(){
5018     check_cflags "$@"
5019     enabled lto && check_ldflags "$@"
5020 }
5021
5022 check_optflags $optflags
5023 check_optflags -fno-math-errno
5024 check_optflags -fno-signed-zeros
5025
5026 if enabled lto; then
5027     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5028     check_cflags  -flto
5029     check_ldflags -flto $cpuflags
5030 fi
5031
5032 if enabled icc; then
5033     # Just warnings, no remarks
5034     check_cflags -w1
5035     # -wd: Disable following warnings
5036     # 144, 167, 556: -Wno-pointer-sign
5037     # 1292: attribute "foo" ignored
5038     # 1419: external declaration in primary source file
5039     # 10006: ignoring unknown option -fno-signed-zeros
5040     # 10148: ignoring unknown option -Wno-parentheses
5041     # 10156: ignoring option '-W'; no argument required
5042     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
5043     # 11030: Warning unknown option --as-needed
5044     # 10156: ignoring option '-export'; no argument required
5045     check_ldflags -wd10156,11030
5046     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5047     enable ebp_available
5048     if enabled x86_32; then
5049         icc_version=$($cc -dumpversion)
5050         test ${icc_version%%.*} -ge 11 &&
5051             check_cflags -falign-stack=maintain-16-byte ||
5052             disable aligned_stack
5053     fi
5054 elif enabled ccc; then
5055     # disable some annoying warnings
5056     add_cflags -msg_disable bitnotint
5057     add_cflags -msg_disable mixfuncvoid
5058     add_cflags -msg_disable nonstandcast
5059     add_cflags -msg_disable unsupieee
5060 elif enabled gcc; then
5061     check_optflags -fno-tree-vectorize
5062     check_cflags -Werror=implicit-function-declaration
5063     check_cflags -Werror=missing-prototypes
5064     check_cflags -Werror=return-type
5065     check_cflags -Werror=declaration-after-statement
5066     check_cflags -Werror=vla
5067     check_cflags -Werror=format-security
5068     check_cflags -fdiagnostics-color=auto
5069     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5070 elif enabled llvm_gcc; then
5071     check_cflags -mllvm -stack-alignment=16
5072 elif enabled clang; then
5073     check_cflags -mllvm -stack-alignment=16
5074     check_cflags -Qunused-arguments
5075     check_cflags -Werror=implicit-function-declaration
5076     check_cflags -Werror=missing-prototypes
5077     check_cflags -Werror=return-type
5078 elif enabled cparser; then
5079     add_cflags -Wno-missing-variable-declarations
5080     add_cflags -Wno-empty-statement
5081 elif enabled armcc; then
5082     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5083     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5084     # 2523: use of inline assembly is deprecated
5085     add_cflags -W${armcc_opt},--diag_suppress=2523
5086     add_cflags -W${armcc_opt},--diag_suppress=1207
5087     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5088     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5089     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5090     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5091 elif enabled tms470; then
5092     add_cflags -pds=824 -pds=837
5093     disable inline_asm
5094 elif enabled pathscale; then
5095     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5096     disable inline_asm
5097 elif enabled_any msvc icl; then
5098     enabled x86_32 && disable aligned_stack
5099     enabled_all x86_32 debug && add_cflags -Oy-
5100     enabled debug && add_ldflags -debug
5101     enable pragma_deprecated
5102     if enabled icl; then
5103         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5104         # (correctly) on icl 13.x.
5105         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5106             add_cflags -Qansi-alias
5107         # icl will pass the inline asm tests but inline asm is currently
5108         # not supported (build will fail)
5109         disable inline_asm
5110     fi
5111     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5112     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5113     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5114     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5115     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5116     # MSVC 2013 and newer can handle it fine.
5117     # If this declspec fails, force including stdlib.h before the restrict redefinition
5118     # happens in config.h.
5119     if [ $_restrict != restrict ]; then
5120         check_cc <<EOF || add_cflags -FIstdlib.h
5121 __declspec($_restrict) void* foo(int);
5122 EOF
5123     fi
5124 fi
5125
5126 for pfx in "" host_; do
5127     varname=${pfx%_}cc_type
5128     eval "type=\$$varname"
5129     if [ "$type" = "msvc" ]; then
5130         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5131 static inline int foo(int a) { return a; }
5132 EOF
5133     fi
5134 done
5135
5136 case $as_type in
5137     clang)
5138         add_asflags -Qunused-arguments
5139     ;;
5140 esac
5141
5142 case $ld_type in
5143     clang)
5144         check_ldflags -Qunused-arguments
5145     ;;
5146 esac
5147
5148 case $target_os in
5149     osf1)
5150         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5151     ;;
5152 esac
5153
5154 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5155
5156 check_deps $CONFIG_LIST       \
5157            $CONFIG_EXTRA      \
5158            $HAVE_LIST         \
5159            $ALL_COMPONENTS    \
5160
5161 flatten_extralibs(){
5162     unset nested_entries
5163     list_name=$1
5164     eval list=\$${1}
5165     for entry in $list; do
5166         entry_copy=$entry
5167         resolve entry_copy
5168         append nested_entries $(filter '*_extralibs' $entry_copy)
5169         flat_entries=$(filter_out '*_extralibs' $entry_copy)
5170         eval $entry="\$flat_entries"
5171     done
5172     append $list_name "$nested_entries"
5173
5174     resolve nested_entries
5175     if test -n "$(filter '*_extralibs' $nested_entries)"; then
5176         flatten_extralibs $list_name
5177     fi
5178 }
5179
5180 for linkunit in $LIBRARY_LIST; do
5181     unset current_extralibs
5182     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
5183     for comp in ${components}; do
5184         enabled $comp || continue
5185         comp_extralibs="${comp}_extralibs"
5186         append current_extralibs $comp_extralibs
5187     done
5188     eval prepend ${linkunit}_extralibs $current_extralibs
5189 done
5190
5191 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5192     flatten_extralibs ${linkunit}_extralibs
5193     unique  ${linkunit}_extralibs
5194     resolve ${linkunit}_extralibs
5195     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
5196 done
5197
5198 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5199
5200 for thread in $THREADS_LIST; do
5201     if enabled $thread; then
5202         test -n "$thread_type" &&
5203             die "ERROR: Only one thread type must be selected." ||
5204             thread_type="$thread"
5205     fi
5206 done
5207
5208 if disabled stdatomic_h; then
5209     if enabled atomics_gcc; then
5210         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
5211     elif enabled atomics_win32; then
5212         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
5213     elif enabled atomics_suncc; then
5214         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
5215     elif enabled pthreads; then
5216         add_compat atomics/pthread/stdatomic.o
5217         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
5218     else
5219         enabled threads && die "Threading is enabled, but no atomics are available"
5220         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
5221     fi
5222 fi
5223
5224 enabled zlib && add_cppflags -DZLIB_CONST
5225
5226 # conditional library dependencies, in linking order
5227 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5228 enabled_any asyncts_filter resample_filter &&
5229                            prepend avfilter_deps "avresample"
5230 enabled scale_filter    && prepend avfilter_deps "swscale"
5231
5232 enabled opus_decoder    && prepend avcodec_deps "avresample"
5233
5234 expand_deps(){
5235     lib_deps=${1}_deps
5236     eval "deps=\$$lib_deps"
5237     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5238     unique $lib_deps
5239 }
5240
5241 map 'expand_deps $v' $LIBRARY_LIST
5242
5243 if test "$quiet" != "yes"; then
5244
5245 echo "install prefix            $prefix"
5246 echo "source path               $source_path"
5247 echo "C compiler                $cc"
5248 echo "C library                 $libc_type"
5249 if test "$host_cc" != "$cc"; then
5250     echo "host C compiler           $host_cc"
5251     echo "host C library            $host_libc_type"
5252 fi
5253 echo "ARCH                      $arch ($cpu)"
5254 if test "$extra_version" != ""; then
5255     echo "version string suffix     $extra_version"
5256 fi
5257 echo "big-endian                ${bigendian-no}"
5258 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5259 if enabled x86; then
5260     echo "standalone assembly       ${x86asm-no}"
5261     echo "x86 assembler             ${x86asmexe}"
5262     echo "MMX enabled               ${mmx-no}"
5263     echo "MMXEXT enabled            ${mmxext-no}"
5264     echo "3DNow! enabled            ${amd3dnow-no}"
5265     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5266     echo "SSE enabled               ${sse-no}"
5267     echo "SSSE3 enabled             ${ssse3-no}"
5268     echo "AVX enabled               ${avx-no}"
5269     echo "XOP enabled               ${xop-no}"
5270     echo "FMA3 enabled              ${fma3-no}"
5271     echo "FMA4 enabled              ${fma4-no}"
5272     echo "i686 features enabled     ${i686-no}"
5273     echo "CMOV is fast              ${fast_cmov-no}"
5274     echo "EBX available             ${ebx_available-no}"
5275     echo "EBP available             ${ebp_available-no}"
5276 fi
5277 if enabled aarch64; then
5278     echo "NEON enabled              ${neon-no}"
5279     echo "VFP enabled               ${vfp-no}"
5280 fi
5281 if enabled arm; then
5282     echo "ARMv5TE enabled           ${armv5te-no}"
5283     echo "ARMv6 enabled             ${armv6-no}"
5284     echo "ARMv6T2 enabled           ${armv6t2-no}"
5285     echo "VFP enabled               ${vfp-no}"
5286     echo "NEON enabled              ${neon-no}"
5287 fi
5288 if enabled ppc; then
5289     echo "AltiVec enabled           ${altivec-no}"
5290     echo "VSX enabled               ${vsx-no}"
5291     echo "POWER8 enabled            ${power8-no}"
5292     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5293     echo "dcbzl available           ${dcbzl-no}"
5294 fi
5295 echo "debug symbols             ${debug-no}"
5296 echo "optimize for size         ${small-no}"
5297 echo "optimizations             ${optimizations-no}"
5298 echo "static                    ${static-no}"
5299 echo "shared                    ${shared-no}"
5300 echo "network support           ${network-no}"
5301 echo "threading support         ${thread_type-no}"
5302 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5303 test -n "$random_seed" &&
5304     echo "random seed               ${random_seed}"
5305 echo
5306
5307 echo "External libraries:"
5308 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5309 echo
5310 echo "External libraries providing hardware acceleration:"
5311 print_enabled '' $HWACCEL_LIBRARY_LIST | print_3_columns
5312 echo
5313
5314 echo "Libraries:"
5315 print_enabled '' $LIBRARY_LIST | print_3_columns
5316 echo
5317
5318 echo "Programs:"
5319 print_enabled '' $PROGRAM_LIST | print_3_columns
5320 echo
5321
5322 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5323     echo "Enabled ${type}s:"
5324     eval list=\$$(toupper $type)_LIST
5325     print_enabled '_*' $list | print_3_columns
5326     echo
5327 done
5328
5329 if test -n "$ignore_tests"; then
5330     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
5331     echo "Ignored FATE tests:"
5332     echo $ignore_tests | print_3_columns
5333     echo
5334 fi
5335
5336 license="LGPL version 2.1 or later"
5337 if enabled nonfree; then
5338     license="nonfree and unredistributable"
5339 elif enabled gplv3; then
5340     license="GPL version 3 or later"
5341 elif enabled lgplv3; then
5342     license="LGPL version 3 or later"
5343 elif enabled gpl; then
5344     license="GPL version 2 or later"
5345 fi
5346
5347 echo "License: $license"
5348
5349 echo "Creating configuration files ..."
5350
5351 fi # test "$quiet" != "yes"
5352
5353 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5354
5355 config_files="$TMPH avbuild/config.mak"
5356
5357 cat > avbuild/config.mak <<EOF
5358 # Automatically generated by configure - do not modify!
5359 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
5360 prefix=$prefix
5361 LIBDIR=\$(DESTDIR)$libdir
5362 SHLIBDIR=\$(DESTDIR)$shlibdir
5363 INCDIR=\$(DESTDIR)$incdir
5364 BINDIR=\$(DESTDIR)$bindir
5365 DATADIR=\$(DESTDIR)$datadir
5366 DOCDIR=\$(DESTDIR)$docdir
5367 MANDIR=\$(DESTDIR)$mandir
5368 SRC_PATH=$source_path
5369 CC_IDENT=$cc_ident
5370 ARCH=$arch
5371 INTRINSICS=$intrinsics
5372 CC=$cc
5373 AS=$as
5374 OBJCC=$objcc
5375 LD=$ld
5376 DEPCC=$dep_cc
5377 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5378 DEPAS=$as
5379 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5380 X86ASM=$x86asmexe
5381 DEPX86ASM=$x86asmexe
5382 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
5383 AR=$ar
5384 ARFLAGS=$arflags
5385 AR_O=$ar_o
5386 RANLIB=$ranlib
5387 STRIP=$strip
5388 LN_S=$ln_s
5389 CPPFLAGS=$CPPFLAGS
5390 CFLAGS=$CFLAGS
5391 OBJCFLAGS=$OBJCFLAGS
5392 ASFLAGS=$ASFLAGS
5393 AS_C=$AS_C
5394 AS_O=$AS_O
5395 OBJCC_C=$OBJCC_C
5396 OBJCC_E=$OBJCC_E
5397 OBJCC_O=$OBJCC_O
5398 CC_C=$CC_C
5399 CC_E=$CC_E
5400 CC_O=$CC_O
5401 X86ASM_O=$X86ASM_O
5402 LD_O=$LD_O
5403 LD_LIB=$LD_LIB
5404 LD_PATH=$LD_PATH
5405 DLLTOOL=$dlltool
5406 LDFLAGS=$LDFLAGS
5407 LDEXEFLAGS=$LDEXEFLAGS
5408 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5409 STRIPFLAGS=$STRIPFLAGS
5410 X86ASMFLAGS=$X86ASMFLAGS
5411 LIBPREF=$LIBPREF
5412 LIBSUF=$LIBSUF
5413 LIBNAME=$LIBNAME
5414 SLIBPREF=$SLIBPREF
5415 SLIBSUF=$SLIBSUF
5416 EXESUF=$EXESUF
5417 EXTRA_VERSION=$extra_version
5418 CCDEP=$CCDEP
5419 CCDEP_FLAGS=$CCDEP_FLAGS
5420 ASDEP=$ASDEP
5421 ASDEP_FLAGS=$ASDEP_FLAGS
5422 X86ASMDEP=$X86ASMDEP
5423 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
5424 CC_DEPFLAGS=$CC_DEPFLAGS
5425 AS_DEPFLAGS=$AS_DEPFLAGS
5426 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
5427 HOSTCC=$host_cc
5428 HOSTLD=$host_ld
5429 HOSTCFLAGS=$host_cflags
5430 HOSTCPPFLAGS=$host_cppflags
5431 HOSTEXESUF=$HOSTEXESUF
5432 HOSTLDFLAGS=$host_ldflags
5433 HOSTEXTRALIBS=$host_extralibs
5434 DEPHOSTCC=$host_cc
5435 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5436 HOSTCCDEP=$HOSTCCDEP
5437 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5438 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5439 HOSTCC_C=$HOSTCC_C
5440 HOSTCC_O=$HOSTCC_O
5441 HOSTLD_O=$HOSTLD_O
5442 TARGET_EXEC=$target_exec $target_exec_args
5443 TARGET_PATH=$target_path
5444 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5445 CFLAGS-avplay=$sdl_cflags
5446 CFLAGS_HEADERS=$CFLAGS_HEADERS
5447 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5448 EXTRALIBS=$extralibs
5449 COMPAT_OBJS=$compat_objs
5450 INSTALL=install
5451 LIBTARGET=${LIBTARGET}
5452 SLIBNAME=${SLIBNAME}
5453 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5454 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5455 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5456 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5457 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5458 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5459 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5460 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5461 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
5462 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
5463 IGNORE_TESTS=$ignore_tests
5464 EOF
5465
5466 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> avbuild/config.mak' $LIBRARY_LIST
5467
5468 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5469     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> avbuild/config.mak
5470 done
5471
5472 cat > $TMPH <<EOF
5473 /* Automatically generated by configure - do not modify! */
5474 #ifndef LIBAV_CONFIG_H
5475 #define LIBAV_CONFIG_H
5476 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
5477 #define LIBAV_LICENSE "$(c_escape $license)"
5478 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5479 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5480 #define restrict $_restrict
5481 #define EXTERN_PREFIX "${extern_prefix}"
5482 #define EXTERN_ASM ${extern_prefix}
5483 #define SLIBSUF "$SLIBSUF"
5484 EOF
5485
5486 test -n "$malloc_prefix" &&
5487     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5488
5489 if enabled x86asm; then
5490     append config_files $TMPASM
5491     printf '' >$TMPASM
5492 fi
5493
5494 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5495
5496 print_config ARCH_   "$config_files" $ARCH_LIST
5497 print_config HAVE_   "$config_files" $HAVE_LIST
5498 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5499                                      $CONFIG_EXTRA      \
5500                                      $ALL_COMPONENTS    \
5501
5502 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
5503
5504 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5505 cp_if_changed $TMPH config.h
5506 touch avbuild/.config
5507
5508 enabled x86asm && cp_if_changed $TMPASM config.asm
5509
5510 cat > $TMPH <<EOF
5511 /* Generated by ffconf */
5512 #ifndef AVUTIL_AVCONFIG_H
5513 #define AVUTIL_AVCONFIG_H
5514 EOF
5515
5516 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5517
5518 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5519
5520 cp_if_changed $TMPH libavutil/avconfig.h
5521
5522 # generate the lists of enabled components
5523 print_enabled_components(){
5524     file=$1
5525     struct_name=$2
5526     name=$3
5527     shift 3
5528     echo "static const $struct_name * const $name[] = {" > $TMPH
5529     for c in $*; do
5530         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
5531     done
5532     echo "    NULL };" >> $TMPH
5533     cp_if_changed $TMPH $file
5534 }
5535
5536 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
5537 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
5538
5539 test -n "$WARNINGS" && printf "\n$WARNINGS"
5540
5541 # Settings for pkg-config files
5542
5543 cat > avbuild/config.sh <<EOF
5544 # Automatically generated by configure - do not modify!
5545 shared=$shared
5546 prefix=$prefix
5547 libdir=$libdir
5548 incdir=$incdir
5549 source_path=${source_path}
5550 LIBPREF=${LIBPREF}
5551 LIBSUF=${LIBSUF}
5552 extralibs_avutil="$avutil_extralibs"
5553 extralibs_avcodec="$avcodec_extralibs"
5554 extralibs_avformat="$avformat_extralibs"
5555 extralibs_avdevice="$avdevice_extralibs"
5556 extralibs_avfilter="$avfilter_extralibs"
5557 extralibs_avresample="$avresample_extralibs"
5558 extralibs_swscale="$swscale_extralibs"
5559 EOF
5560
5561 for lib in $LIBRARY_LIST; do
5562     lib_deps="$(eval echo \$${lib}_deps)"
5563     echo ${lib}_deps=\"$lib_deps\" >> avbuild/config.sh
5564 done