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     altivec_h
1551     arpa_inet_h
1552     cdio_paranoia_h
1553     cdio_paranoia_paranoia_h
1554     d3d11_h
1555     dispatch_dispatch_h
1556     dev_bktr_ioctl_bt848_h
1557     dev_bktr_ioctl_meteor_h
1558     dev_ic_bt8xx_h
1559     dev_video_bktr_ioctl_bt848_h
1560     dev_video_meteor_ioctl_meteor_h
1561     direct_h
1562     dlfcn_h
1563     dxva_h
1564     gsm_h
1565     io_h
1566     mach_mach_time_h
1567     machine_ioctl_bt848_h
1568     machine_ioctl_meteor_h
1569     malloc_h
1570     poll_h
1571     sndio_h
1572     soundcard_h
1573     stdatomic_h
1574     sys_mman_h
1575     sys_param_h
1576     sys_resource_h
1577     sys_select_h
1578     sys_soundcard_h
1579     sys_time_h
1580     sys_un_h
1581     sys_videoio_h
1582     unistd_h
1583     valgrind_valgrind_h
1584     windows_h
1585     winsock2_h
1586 "
1587
1588 INTRINSICS_LIST="
1589     intrinsics_neon
1590 "
1591
1592 MATH_FUNCS="
1593     atanf
1594     atan2f
1595     cbrtf
1596     cosf
1597     exp2
1598     exp2f
1599     expf
1600     isinf
1601     isnan
1602     ldexpf
1603     llrint
1604     llrintf
1605     log2
1606     log2f
1607     log10f
1608     lrint
1609     lrintf
1610     powf
1611     rint
1612     round
1613     roundf
1614     sinf
1615     trunc
1616     truncf
1617 "
1618
1619 SYSTEM_FUNCS="
1620     aligned_malloc
1621     clock_gettime
1622     closesocket
1623     CommandLineToArgvW
1624     CoTaskMemFree
1625     CryptGenRandom
1626     fcntl
1627     flt_lim
1628     fork
1629     getaddrinfo
1630     gethrtime
1631     getopt
1632     GetProcessAffinityMask
1633     GetProcessMemoryInfo
1634     GetProcessTimes
1635     getrusage
1636     GetSystemTimeAsFileTime
1637     gettimeofday
1638     gmtime_r
1639     inet_aton
1640     isatty
1641     LoadLibrary
1642     localtime_r
1643     mach_absolute_time
1644     MapViewOfFile
1645     memalign
1646     mkstemp
1647     mmap
1648     mprotect
1649     nanosleep
1650     posix_memalign
1651     sched_getaffinity
1652     SetConsoleTextAttribute
1653     setmode
1654     setrlimit
1655     Sleep
1656     strerror_r
1657     sysconf
1658     sysctl
1659     usleep
1660     VirtualAlloc
1661 "
1662
1663 TOOLCHAIN_FEATURES="
1664     as_arch_directive
1665     as_fpu_directive
1666     as_func
1667     as_object_arch
1668     asm_mod_q
1669     attribute_may_alias
1670     attribute_packed
1671     blocks_extension
1672     ebp_available
1673     ebx_available
1674     gnu_as
1675     ibm_asm
1676     inline_asm_labels
1677     pragma_deprecated
1678     symver_asm_label
1679     symver_gnu_asm
1680     vfp_args
1681     xform_asm
1682     xmm_clobbers
1683 "
1684
1685 TYPES_LIST="
1686     CONDITION_VARIABLE_Ptr
1687     socklen_t
1688     struct_addrinfo
1689     struct_group_source_req
1690     struct_ip_mreq_source
1691     struct_ipv6_mreq
1692     struct_pollfd
1693     struct_rusage_ru_maxrss
1694     struct_sockaddr_in6
1695     struct_sockaddr_sa_len
1696     struct_sockaddr_storage
1697     struct_v4l2_frmivalenum_discrete
1698 "
1699
1700 HAVE_LIST="
1701     $ARCH_EXT_LIST
1702     $(add_suffix _external $ARCH_EXT_LIST)
1703     $(add_suffix _inline   $ARCH_EXT_LIST)
1704     $ARCH_FEATURES
1705     $BUILTIN_LIST
1706     $HAVE_LIST_CMDLINE
1707     $HAVE_LIST_PUB
1708     $HEADERS_LIST
1709     $INTRINSICS_LIST
1710     $MATH_FUNCS
1711     $SYSTEM_FUNCS
1712     $THREADS_LIST
1713     $TOOLCHAIN_FEATURES
1714     $TYPES_LIST
1715     dos_paths
1716     dxva2_lib
1717     libc_msvcrt
1718     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1719     sdl
1720     section_data_rel_ro
1721     threads
1722     vaapi_drm
1723     vaapi_x11
1724     vdpau_x11
1725 "
1726
1727 # options emitted with CONFIG_ prefix but not available on the command line
1728 CONFIG_EXTRA="
1729     aandcttables
1730     ac3dsp
1731     adts_header
1732     audio_frame_queue
1733     audiodsp
1734     blockdsp
1735     bswapdsp
1736     cabac
1737     dirac_parse
1738     dvprofile
1739     faandct
1740     faanidct
1741     fdctdsp
1742     flacdsp
1743     fmtconvert
1744     g722dsp
1745     gmp
1746     golomb
1747     gplv3
1748     h263dsp
1749     h264chroma
1750     h264dsp
1751     h264parse
1752     h264pred
1753     h264qpel
1754     hevc_ps
1755     hpeldsp
1756     huffman
1757     huffyuvdsp
1758     huffyuvencdsp
1759     idctdsp
1760     iirfilter
1761     imdct15
1762     intrax8
1763     iso_media
1764     ividsp
1765     jpegtables
1766     lgplv3
1767     libx262
1768     libxcb_shape
1769     lpc
1770     lzf
1771     me_cmp
1772     mpeg_er
1773     mpegaudio
1774     mpegaudiodsp
1775     mpegaudioheader
1776     mpegvideo
1777     mpegvideoenc
1778     mss34dsp
1779     pixblockdsp
1780     qpeldsp
1781     qsv
1782     qsvdec
1783     qsvenc
1784     rangecoder
1785     riffdec
1786     riffenc
1787     rtpdec
1788     rtpenc_chain
1789     rv34dsp
1790     sinewin
1791     snappy
1792     srtp
1793     startcode
1794     texturedsp
1795     texturedspenc
1796     tpeldsp
1797     vaapi_encode
1798     vc1dsp
1799     videodsp
1800     vp3dsp
1801     vp56dsp
1802     vp8dsp
1803     wma_freqs
1804     wmv2dsp
1805 "
1806
1807 CMDLINE_SELECT="
1808     $ARCH_EXT_LIST
1809     $CONFIG_LIST
1810     $HAVE_LIST_CMDLINE
1811     $THREADS_LIST
1812     asm
1813     cross_compile
1814     debug
1815     extra_warnings
1816     logging
1817     lto
1818     optimizations
1819     rpath
1820 "
1821
1822 PATHS_LIST="
1823     bindir
1824     datadir
1825     docdir
1826     incdir
1827     libdir
1828     mandir
1829     prefix
1830     shlibdir
1831 "
1832
1833 CMDLINE_SET="
1834     $PATHS_LIST
1835     ar
1836     arch
1837     as
1838     cc
1839     objcc
1840     cpu
1841     cross_prefix
1842     custom_allocator
1843     dep_cc
1844     env
1845     extra_version
1846     host_cc
1847     host_cflags
1848     host_extralibs
1849     host_ld
1850     host_ldflags
1851     host_os
1852     ignore_tests
1853     ld
1854     logfile
1855     malloc_prefix
1856     nm
1857     optflags
1858     pkg_config
1859     pkg_config_flags
1860     random_seed
1861     samples
1862     sysinclude
1863     sysroot
1864     target_exec
1865     target_os
1866     target_path
1867     target_samples
1868     toolchain
1869     x86asmexe
1870 "
1871
1872 CMDLINE_APPEND="
1873     extra_cflags
1874     extra_objcflags
1875     host_cppflags
1876 "
1877
1878 # code dependency declarations
1879
1880 # architecture extensions
1881
1882 armv5te_deps="arm"
1883 armv6_deps="arm"
1884 armv6t2_deps="arm"
1885 armv8_deps="aarch64"
1886 neon_deps_any="aarch64 arm"
1887 intrinsics_neon_deps="neon"
1888 vfp_deps_any="aarch64 arm"
1889 vfpv3_deps="vfp"
1890
1891 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1892
1893 altivec_deps="ppc"
1894 ppc4xx_deps="ppc"
1895 vsx_deps="altivec"
1896 power8_deps="vsx"
1897
1898 cpunop_deps="i686"
1899 x86_64_select="i686"
1900 x86_64_suggest="fast_cmov"
1901
1902 amd3dnow_deps="mmx"
1903 amd3dnowext_deps="amd3dnow"
1904 i686_deps="x86"
1905 mmx_deps="x86"
1906 mmxext_deps="mmx"
1907 sse_deps="mmxext"
1908 sse2_deps="sse"
1909 sse3_deps="sse2"
1910 ssse3_deps="sse3"
1911 sse4_deps="ssse3"
1912 sse42_deps="sse4"
1913 avx_deps="sse42"
1914 xop_deps="avx"
1915 fma3_deps="avx"
1916 fma4_deps="avx"
1917 avx2_deps="avx"
1918
1919 mmx_external_deps="x86asm"
1920 mmx_inline_deps="inline_asm"
1921 mmx_suggest="mmx_external mmx_inline"
1922
1923 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1924     eval dep=\$${ext}_deps
1925     eval ${ext}_external_deps='"${dep}_external"'
1926     eval ${ext}_inline_deps='"${dep}_inline"'
1927     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1928 done
1929
1930 aligned_stack_if_any="aarch64 ppc x86"
1931 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1932 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1933 fast_unaligned_if_any="aarch64 ppc x86"
1934 simd_align_16_if_any="altivec neon sse"
1935 simd_align_32_if_any="avx"
1936
1937 # system capabilities
1938 symver_if_any="symver_asm_label symver_gnu_asm"
1939 valgrind_backtrace_conflict="optimizations"
1940 valgrind_backtrace_deps="valgrind_valgrind_h"
1941
1942 # threading support
1943 atomics_gcc_if="sync_val_compare_and_swap"
1944 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1945 atomics_win32_if="MemoryBarrier"
1946 atomics_native_if_any="$ATOMICS_LIST"
1947 w32threads_deps="atomics_native"
1948 threads_if_any="$THREADS_LIST"
1949
1950 # subsystems
1951 dct_select="rdft"
1952 dirac_parse_select="golomb"
1953 error_resilience_select="me_cmp"
1954 faandct_deps="faan fdctdsp"
1955 faanidct_deps="faan idctdsp"
1956 h264dsp_select="startcode"
1957 hevc_ps_select="golomb"
1958 intrax8_select="blockdsp idctdsp"
1959 mdct_select="fft"
1960 rdft_select="fft"
1961 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1962 mpeg_er_select="error_resilience"
1963 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1964 mpegaudiodsp_select="dct"
1965 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1966 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1967 vc1dsp_select="h264chroma qpeldsp startcode"
1968
1969 # decoders / encoders
1970 aac_decoder_select="adts_header imdct15 mdct sinewin"
1971 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1972 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1973 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1974 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1975 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1976 adpcm_g722_decoder_select="g722dsp"
1977 adpcm_g722_encoder_select="g722dsp"
1978 aic_decoder_select="golomb idctdsp"
1979 alac_encoder_select="lpc"
1980 als_decoder_select="bswapdsp"
1981 amrnb_decoder_select="lsp"
1982 amrwb_decoder_select="lsp"
1983 amv_decoder_select="sp5x_decoder"
1984 ape_decoder_select="bswapdsp"
1985 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1986 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1987 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1988 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1989 atrac1_decoder_select="mdct sinewin"
1990 atrac3_decoder_select="mdct"
1991 atrac3p_decoder_select="mdct sinewin"
1992 bink_decoder_select="blockdsp hpeldsp"
1993 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1994 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1995 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1996 cllc_decoder_select="bswapdsp"
1997 comfortnoise_encoder_select="lpc"
1998 cook_decoder_select="audiodsp mdct sinewin"
1999 cscd_decoder_select="lzo"
2000 cscd_decoder_suggest="zlib"
2001 dca_decoder_select="fmtconvert mdct"
2002 dds_decoder_select="texturedsp"
2003 dnxhd_decoder_select="blockdsp idctdsp"
2004 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2005 dvvideo_decoder_select="dvprofile idctdsp"
2006 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2007 dxa_decoder_deps="zlib"
2008 dxv_decoder_select="lzf texturedsp"
2009 eac3_decoder_select="ac3_decoder"
2010 eac3_encoder_select="ac3_encoder"
2011 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2012 eatgq_decoder_select="aandcttables idctdsp"
2013 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2014 exr_decoder_deps="zlib"
2015 ffv1_decoder_select="rangecoder"
2016 ffv1_encoder_select="rangecoder"
2017 ffvhuff_decoder_select="huffyuv_decoder"
2018 ffvhuff_encoder_select="huffyuv_encoder"
2019 fic_decoder_select="golomb"
2020 flac_decoder_select="flacdsp"
2021 flac_encoder_select="bswapdsp flacdsp lpc"
2022 flashsv_decoder_deps="zlib"
2023 flashsv_encoder_deps="zlib"
2024 flashsv2_decoder_deps="zlib"
2025 flv_decoder_select="h263_decoder"
2026 flv_encoder_select="h263_encoder"
2027 fourxm_decoder_select="blockdsp bswapdsp"
2028 fraps_decoder_select="bswapdsp huffman"
2029 g2m_decoder_deps="zlib"
2030 g2m_decoder_select="blockdsp idctdsp jpegtables"
2031 h261_decoder_select="mpeg_er mpegvideo"
2032 h261_encoder_select="aandcttables mpegvideoenc"
2033 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2034 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2035 h263i_decoder_select="h263_decoder"
2036 h263p_encoder_select="h263_encoder"
2037 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2038 h264_decoder_suggest="error_resilience"
2039 hap_decoder_select="snappy texturedsp"
2040 hap_encoder_deps="libsnappy"
2041 hap_encoder_select="texturedspenc"
2042 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2043 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2044 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2045 iac_decoder_select="imc_decoder"
2046 imc_decoder_select="bswapdsp fft mdct sinewin"
2047 indeo3_decoder_select="hpeldsp"
2048 indeo4_decoder_select="ividsp"
2049 indeo5_decoder_select="ividsp"
2050 interplay_video_decoder_select="hpeldsp"
2051 jpegls_decoder_select="mjpeg_decoder"
2052 jv_decoder_select="blockdsp"
2053 lagarith_decoder_select="huffyuvdsp"
2054 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2055 magicyuv_decoder_select="huffyuvdsp"
2056 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2057 metasound_decoder_select="lsp mdct sinewin"
2058 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2059 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2060 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2061 mjpegb_decoder_select="mjpeg_decoder"
2062 mlp_decoder_select="mlp_parser"
2063 motionpixels_decoder_select="bswapdsp"
2064 mp1_decoder_select="mpegaudio"
2065 mp1float_decoder_select="mpegaudio"
2066 mp2_decoder_select="mpegaudio"
2067 mp2float_decoder_select="mpegaudio"
2068 mp3_decoder_select="mpegaudio"
2069 mp3adu_decoder_select="mpegaudio"
2070 mp3adufloat_decoder_select="mpegaudio"
2071 mp3float_decoder_select="mpegaudio"
2072 mp3on4_decoder_select="mpegaudio"
2073 mp3on4float_decoder_select="mpegaudio"
2074 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2075 mpc8_decoder_select="mpegaudiodsp"
2076 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2077 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2078 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2079 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2080 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2081 mpeg4_encoder_select="h263_encoder"
2082 msa1_decoder_select="mss34dsp"
2083 msmpeg4v1_decoder_select="h263_decoder"
2084 msmpeg4v2_decoder_select="h263_decoder"
2085 msmpeg4v2_encoder_select="h263_encoder"
2086 msmpeg4v3_decoder_select="h263_decoder"
2087 msmpeg4v3_encoder_select="h263_encoder"
2088 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2089 mts2_decoder_select="mss34dsp"
2090 mxpeg_decoder_select="mjpeg_decoder"
2091 nellymoser_decoder_select="mdct sinewin"
2092 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2093 nuv_decoder_select="idctdsp lzo"
2094 on2avc_decoder_select="mdct"
2095 opus_decoder_deps="avresample"
2096 opus_decoder_select="imdct15"
2097 png_decoder_deps="zlib"
2098 png_encoder_deps="zlib"
2099 png_encoder_select="huffyuvencdsp"
2100 prores_decoder_select="idctdsp"
2101 prores_encoder_select="fdctdsp"
2102 qcelp_decoder_select="lsp"
2103 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2104 ra_144_encoder_select="audio_frame_queue lpc"
2105 ralf_decoder_select="golomb"
2106 rscc_decoder_deps="zlib"
2107 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2108 rv10_encoder_select="h263_encoder"
2109 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2110 rv20_encoder_select="h263_encoder"
2111 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2112 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2113 screenpresso_decoder_deps="zlib"
2114 sipr_decoder_select="lsp"
2115 sp5x_decoder_select="mjpeg_decoder"
2116 svq1_decoder_select="hpeldsp"
2117 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2118 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2119 svq3_decoder_suggest="zlib"
2120 tak_decoder_select="audiodsp"
2121 tdsc_decoder_deps="zlib"
2122 tdsc_decoder_select="mjpeg_decoder"
2123 theora_decoder_select="vp3_decoder"
2124 thp_decoder_select="mjpeg_decoder"
2125 tiff_decoder_suggest="zlib"
2126 tiff_encoder_suggest="zlib"
2127 truehd_decoder_select="mlp_decoder"
2128 truemotion2_decoder_select="bswapdsp"
2129 truespeech_decoder_select="bswapdsp"
2130 tscc_decoder_deps="zlib"
2131 txd_decoder_select="texturedsp"
2132 twinvq_decoder_select="mdct lsp sinewin"
2133 utvideo_decoder_select="bswapdsp huffyuvdsp"
2134 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2135 vble_decoder_select="huffyuvdsp"
2136 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2137 vc1image_decoder_select="vc1_decoder"
2138 vorbis_decoder_select="mdct"
2139 vorbis_encoder_select="mdct"
2140 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2141 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2142 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2143 vp6a_decoder_select="vp6_decoder"
2144 vp6f_decoder_select="vp6_decoder"
2145 vp7_decoder_select="h264pred videodsp vp8dsp"
2146 vp8_decoder_select="h264pred videodsp vp8dsp"
2147 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2148 webp_decoder_select="vp8_decoder"
2149 wmapro_decoder_select="mdct sinewin wma_freqs"
2150 wmav1_decoder_select="mdct sinewin wma_freqs"
2151 wmav1_encoder_select="mdct sinewin wma_freqs"
2152 wmav2_decoder_select="mdct sinewin wma_freqs"
2153 wmav2_encoder_select="mdct sinewin wma_freqs"
2154 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2155 wmv1_decoder_select="h263_decoder"
2156 wmv1_encoder_select="h263_encoder"
2157 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2158 wmv2_encoder_select="h263_encoder wmv2dsp"
2159 wmv3_decoder_select="vc1_decoder"
2160 wmv3image_decoder_select="wmv3_decoder"
2161 zerocodec_decoder_deps="zlib"
2162 zlib_decoder_deps="zlib"
2163 zlib_encoder_deps="zlib"
2164 zmbv_decoder_deps="zlib"
2165 zmbv_encoder_deps="zlib"
2166
2167 # hardware accelerators
2168 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2169 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2170 dxva2_lib_deps="dxva2"
2171 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2172 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2173
2174 h263_vaapi_hwaccel_deps="vaapi"
2175 h263_vaapi_hwaccel_select="h263_decoder"
2176 h264_d3d11va_hwaccel_deps="d3d11va"
2177 h264_d3d11va_hwaccel_select="h264_decoder"
2178 h264_dxva2_hwaccel_deps="dxva2"
2179 h264_dxva2_hwaccel_select="h264_decoder"
2180 h264_mmal_hwaccel_deps="mmal"
2181 h264_qsv_hwaccel_deps="libmfx"
2182 h264_vaapi_hwaccel_deps="vaapi"
2183 h264_vaapi_hwaccel_select="h264_decoder"
2184 h264_vda_hwaccel_deps="vda"
2185 h264_vda_hwaccel_select="h264_decoder"
2186 h264_vda_old_hwaccel_deps="vda"
2187 h264_vda_old_hwaccel_select="h264_decoder"
2188 h264_vdpau_hwaccel_deps="vdpau"
2189 h264_vdpau_hwaccel_select="h264_decoder"
2190 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2191 hevc_d3d11va_hwaccel_select="hevc_decoder"
2192 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2193 hevc_dxva2_hwaccel_select="hevc_decoder"
2194 hevc_qsv_hwaccel_deps="libmfx"
2195 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2196 hevc_vaapi_hwaccel_select="hevc_decoder"
2197 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2198 hevc_vdpau_hwaccel_select="hevc_decoder"
2199 mpeg1_vdpau_hwaccel_deps="vdpau"
2200 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2201 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2202 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2203 mpeg2_dxva2_hwaccel_deps="dxva2"
2204 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2205 mpeg2_mmal_hwaccel_deps="mmal"
2206 mpeg2_qsv_hwaccel_deps="libmfx"
2207 mpeg2_vaapi_hwaccel_deps="vaapi"
2208 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2209 mpeg2_vdpau_hwaccel_deps="vdpau"
2210 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2211 mpeg4_vaapi_hwaccel_deps="vaapi"
2212 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2213 mpeg4_vdpau_hwaccel_deps="vdpau"
2214 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2215 vc1_d3d11va_hwaccel_deps="d3d11va"
2216 vc1_d3d11va_hwaccel_select="vc1_decoder"
2217 vc1_dxva2_hwaccel_deps="dxva2"
2218 vc1_dxva2_hwaccel_select="vc1_decoder"
2219 vc1_mmal_hwaccel_deps="mmal"
2220 vc1_qsv_hwaccel_deps="libmfx"
2221 vc1_vaapi_hwaccel_deps="vaapi"
2222 vc1_vaapi_hwaccel_select="vc1_decoder"
2223 vc1_vdpau_hwaccel_deps="vdpau"
2224 vc1_vdpau_hwaccel_select="vc1_decoder"
2225 vp8_qsv_hwaccel_deps="libmfx"
2226 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2227 vp8_vaapi_hwaccel_select="vp8_decoder"
2228 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2229 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2230 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2231 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2232
2233 # hardware-accelerated codecs
2234 nvenc_deps_any="libdl LoadLibrary"
2235 omx_deps="libdl pthreads"
2236 omx_rpi_select="omx"
2237 qsvdec_select="qsv"
2238 qsvenc_select="qsv"
2239 vaapi_encode_deps="vaapi"
2240
2241 hwupload_cuda_filter_deps="cuda"
2242 scale_npp_filter_deps="cuda libnpp"
2243
2244 h264_mmal_decoder_deps="mmal"
2245 h264_nvenc_encoder_deps="nvenc"
2246 h264_omx_encoder_deps="omx"
2247 h264_qsv_decoder_deps="libmfx"
2248 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2249 h264_qsv_encoder_deps="libmfx"
2250 h264_qsv_encoder_select="qsvenc"
2251 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2252 h264_vaapi_encoder_select="vaapi_encode golomb"
2253 hevc_nvenc_encoder_deps="nvenc"
2254 hevc_qsv_decoder_deps="libmfx"
2255 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2256 hevc_qsv_encoder_deps="libmfx"
2257 hevc_qsv_encoder_select="hevc_ps qsvenc"
2258 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2259 hevc_vaapi_encoder_select="vaapi_encode golomb"
2260 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2261 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2262 mpeg2_mmal_decoder_deps="mmal"
2263 mpeg2_qsv_decoder_deps="libmfx"
2264 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2265 mpeg2_qsv_encoder_deps="libmfx"
2266 mpeg2_qsv_encoder_select="qsvenc"
2267 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2268 mpeg2_vaapi_encoder_select="vaapi_encode"
2269 mpeg4_omx_encoder_deps="omx"
2270 vc1_mmal_decoder_deps="mmal"
2271 vc1_qsv_decoder_deps="libmfx"
2272 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2273 vp8_qsv_decoder_deps="libmfx"
2274 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2275 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2276 vp8_vaapi_encoder_select="vaapi_encode"
2277 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2278 vp9_vaapi_encoder_select="vaapi_encode"
2279
2280 nvenc_h264_encoder_select="h264_nvenc_encoder"
2281 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2282
2283 # parsers
2284 aac_parser_select="adts_header"
2285 h264_parser_select="golomb h264dsp h264parse"
2286 hevc_parser_select="hevc_ps"
2287 mpegaudio_parser_select="mpegaudioheader"
2288 mpegvideo_parser_select="mpegvideo"
2289 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2290 vc1_parser_select="vc1dsp"
2291
2292 # bitstream_filters
2293 aac_adtstoasc_bsf_select="adts_header"
2294 mjpeg2jpeg_bsf_select="jpegtables"
2295
2296 # external libraries
2297 avisynth_deps="LoadLibrary"
2298 avxsynth_deps="libdl"
2299 avisynth_demuxer_deps_any="avisynth avxsynth"
2300 avisynth_demuxer_select="riffdec"
2301 libdcadec_decoder_deps="libdcadec"
2302 libfaac_encoder_deps="libfaac"
2303 libfaac_encoder_select="audio_frame_queue"
2304 libfdk_aac_decoder_deps="libfdk_aac"
2305 libfdk_aac_encoder_deps="libfdk_aac"
2306 libfdk_aac_encoder_select="audio_frame_queue"
2307 libgsm_decoder_deps="libgsm"
2308 libgsm_encoder_deps="libgsm"
2309 libgsm_ms_decoder_deps="libgsm"
2310 libgsm_ms_encoder_deps="libgsm"
2311 libilbc_decoder_deps="libilbc"
2312 libilbc_encoder_deps="libilbc"
2313 libkvazaar_encoder_deps="libkvazaar"
2314 libmp3lame_encoder_deps="libmp3lame"
2315 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2316 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2317 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2318 libopencore_amrnb_encoder_select="audio_frame_queue"
2319 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2320 libopenh264_decoder_deps="libopenh264"
2321 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2322 libopenh264_encoder_deps="libopenh264"
2323 libopenjpeg_decoder_deps="libopenjpeg"
2324 libopenjpeg_encoder_deps="libopenjpeg"
2325 libopus_decoder_deps="libopus"
2326 libopus_encoder_deps="libopus"
2327 libopus_encoder_select="audio_frame_queue"
2328 libschroedinger_decoder_deps="libschroedinger"
2329 libschroedinger_encoder_deps="libschroedinger"
2330 libspeex_decoder_deps="libspeex"
2331 libspeex_encoder_deps="libspeex"
2332 libspeex_encoder_select="audio_frame_queue"
2333 libtheora_encoder_deps="libtheora"
2334 libtwolame_encoder_deps="libtwolame"
2335 libvo_aacenc_encoder_deps="libvo_aacenc"
2336 libvo_aacenc_encoder_select="audio_frame_queue"
2337 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2338 libvorbis_encoder_deps="libvorbis"
2339 libvorbis_encoder_select="audio_frame_queue"
2340 libvpx_vp8_decoder_deps="libvpx"
2341 libvpx_vp8_encoder_deps="libvpx"
2342 libvpx_vp9_decoder_deps="libvpx"
2343 libvpx_vp9_encoder_deps="libvpx"
2344 libwavpack_encoder_deps="libwavpack"
2345 libwavpack_encoder_select="audio_frame_queue"
2346 libwebp_encoder_deps="libwebp"
2347 libx262_encoder_deps="libx262"
2348 libx264_encoder_deps="libx264"
2349 libx265_encoder_deps="libx265"
2350 libxavs_encoder_deps="libxavs"
2351 libxvid_encoder_deps="libxvid mkstemp"
2352
2353 # demuxers / muxers
2354 ac3_demuxer_select="ac3_parser"
2355 asf_demuxer_select="riffdec"
2356 asf_muxer_select="riffenc"
2357 asf_stream_muxer_select="asf_muxer"
2358 avi_demuxer_select="iso_media riffdec"
2359 avi_muxer_select="riffenc"
2360 caf_demuxer_select="iso_media riffdec"
2361 dash_muxer_select="mp4_muxer"
2362 dirac_demuxer_select="dirac_parser"
2363 dv_demuxer_select="dvprofile"
2364 dv_muxer_select="dvprofile"
2365 dxa_demuxer_select="riffdec"
2366 eac3_demuxer_select="ac3_parser"
2367 f4v_muxer_select="mov_muxer"
2368 flac_demuxer_select="flac_parser"
2369 hds_muxer_select="flv_muxer"
2370 hls_muxer_select="mpegts_muxer"
2371 ipod_muxer_select="mov_muxer"
2372 ismv_muxer_select="mov_muxer"
2373 matroska_audio_muxer_select="matroska_muxer"
2374 matroska_demuxer_select="iso_media riffdec"
2375 matroska_demuxer_suggest="bzlib lzo zlib"
2376 matroska_muxer_select="iso_media riffenc"
2377 mmf_muxer_select="riffenc"
2378 mov_demuxer_select="iso_media riffdec"
2379 mov_demuxer_suggest="zlib"
2380 mov_muxer_select="iso_media riffenc rtpenc_chain"
2381 mp3_demuxer_select="mpegaudio_parser"
2382 mp3_muxer_select="mpegaudioheader"
2383 mp4_muxer_select="mov_muxer"
2384 mpegts_demuxer_select="iso_media"
2385 mpegts_muxer_select="adts_muxer latm_muxer"
2386 mpegtsraw_demuxer_select="mpegts_demuxer"
2387 mxf_d10_muxer_select="mxf_muxer"
2388 nut_muxer_select="riffenc"
2389 nuv_demuxer_select="riffdec"
2390 oga_muxer_select="ogg_muxer"
2391 ogg_demuxer_select="dirac_parse"
2392 opus_muxer_select="ogg_muxer"
2393 psp_muxer_select="mov_muxer"
2394 rtp_demuxer_select="sdp_demuxer"
2395 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2396 rtsp_demuxer_select="http_protocol rtpdec"
2397 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2398 sap_demuxer_select="sdp_demuxer"
2399 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2400 sdp_demuxer_select="rtpdec"
2401 smoothstreaming_muxer_select="ismv_muxer"
2402 spdif_demuxer_select="adts_header"
2403 spdif_muxer_select="adts_header"
2404 spx_muxer_select="ogg_muxer"
2405 swf_demuxer_suggest="zlib"
2406 tak_demuxer_select="tak_parser"
2407 tg2_muxer_select="mov_muxer"
2408 tgp_muxer_select="mov_muxer"
2409 w64_demuxer_select="wav_demuxer"
2410 wav_demuxer_select="riffdec"
2411 wav_muxer_select="riffenc"
2412 webm_muxer_select="iso_media riffenc"
2413 wtv_demuxer_select="mpegts_demuxer riffdec"
2414 xmv_demuxer_select="riffdec"
2415 xwma_demuxer_select="riffdec"
2416
2417 # indevs / outdevs
2418 alsa_indev_deps="alsa"
2419 alsa_outdev_deps="alsa"
2420 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2421 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2422 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2423 dv1394_indev_deps="dv1394"
2424 dv1394_indev_select="dv_demuxer"
2425 fbdev_indev_deps="linux_fb_h"
2426 jack_indev_deps="libjack"
2427 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2428 libcdio_indev_deps="libcdio"
2429 libdc1394_indev_deps="libdc1394"
2430 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2431 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2432 pulse_indev_deps="libpulse"
2433 sndio_indev_deps="sndio"
2434 sndio_outdev_deps="sndio"
2435 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2436 vfwcap_indev_deps="vfw32 vfwcap_defines"
2437 xcbgrab_indev_deps="libxcb libxcb_shape"
2438 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2439
2440 # protocols
2441 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2442 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2443 ffrtmpcrypt_protocol_select="tcp_protocol"
2444 ffrtmphttp_protocol_conflict="librtmp_protocol"
2445 ffrtmphttp_protocol_select="http_protocol"
2446 gopher_protocol_select="network"
2447 http_protocol_select="tcp_protocol"
2448 httpproxy_protocol_select="tcp_protocol"
2449 https_protocol_select="tls_protocol"
2450 icecast_protocol_select="http_protocol"
2451 librtmp_protocol_deps="librtmp"
2452 librtmpe_protocol_deps="librtmp"
2453 librtmps_protocol_deps="librtmp"
2454 librtmpt_protocol_deps="librtmp"
2455 librtmpte_protocol_deps="librtmp"
2456 mmsh_protocol_select="http_protocol"
2457 mmst_protocol_select="network"
2458 rtmp_protocol_conflict="librtmp_protocol"
2459 rtmp_protocol_select="tcp_protocol"
2460 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2461 rtmps_protocol_conflict="librtmp_protocol"
2462 rtmps_protocol_select="tls_protocol"
2463 rtmpt_protocol_select="ffrtmphttp_protocol"
2464 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2465 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2466 rtp_protocol_select="udp_protocol"
2467 sctp_protocol_deps="struct_sctp_event_subscribe"
2468 sctp_protocol_select="network"
2469 srtp_protocol_select="rtp_protocol srtp"
2470 tcp_protocol_select="network"
2471 tls_gnutls_protocol_deps="gnutls"
2472 tls_gnutls_protocol_select="tcp_protocol"
2473 tls_openssl_protocol_conflict="tls_gnutls_protocol"
2474 tls_openssl_protocol_deps="openssl"
2475 tls_openssl_protocol_select="tcp_protocol"
2476 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2477 udp_protocol_select="network"
2478 unix_protocol_deps="sys_un_h"
2479 unix_protocol_select="network"
2480
2481 # filters
2482 asyncts_filter_deps="avresample"
2483 blackframe_filter_deps="gpl"
2484 boxblur_filter_deps="gpl"
2485 bs2b_filter_deps="libbs2b"
2486 cropdetect_filter_deps="gpl"
2487 deinterlace_qsv_filter_deps="libmfx"
2488 deinterlace_vaapi_filter_deps="vaapi"
2489 delogo_filter_deps="gpl"
2490 drawtext_filter_deps="libfreetype"
2491 drawtext_filter_suggest="libfontconfig"
2492 frei0r_filter_deps="frei0r libdl"
2493 frei0r_src_filter_deps="frei0r libdl"
2494 hdcd_filter_deps="libhdcd"
2495 hqdn3d_filter_deps="gpl"
2496 interlace_filter_deps="gpl"
2497 movie_filter_deps="avcodec avformat"
2498 ocv_filter_deps="libopencv"
2499 resample_filter_deps="avresample"
2500 scale_filter_deps="swscale"
2501 scale_qsv_filter_deps="libmfx"
2502 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2503
2504 # examples
2505 decode_audio_example_deps="avcodec avutil"
2506 decode_video_example_deps="avcodec avutil"
2507 encode_audio_example_deps="avcodec avutil"
2508 encode_video_example_deps="avcodec avutil"
2509 filter_audio_example_deps="avfilter avutil"
2510 metadata_example_deps="avformat avutil"
2511 output_example_deps="avcodec avformat avresample avutil swscale"
2512 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2513 transcode_aac_example_deps="avcodec avformat avresample"
2514
2515 # EXTRALIBS_LIST
2516 cpu_init_extralibs="pthreads_extralibs"
2517 cws2fws_extralibs="zlib_extralibs"
2518
2519 # libraries, in linking order
2520 avcodec_deps="avutil"
2521 avcodec_select="null_bsf"
2522 avdevice_deps="avformat avcodec avutil"
2523 avfilter_deps="avutil"
2524 avformat_deps="avcodec avutil"
2525 avformat_suggest="network"
2526 avresample_deps="avutil"
2527 swscale_deps="avutil"
2528
2529 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2530 avdevice_extralibs="libm_extralibs"
2531 avformat_extralibs="libm_extralibs"
2532 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2533 avresample_extralibs="libm_extralibs"
2534 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"
2535 swscale_extralibs="libm_extralibs"
2536
2537 # programs
2538 avconv_deps="avcodec avfilter avformat avresample swscale"
2539 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2540                fps_filter null_filter resample_filter scale_filter
2541                trim_filter"
2542 avconv_suggest="dxva2_lib ole32 psapi shell32"
2543 avplay_deps="avcodec avfilter avformat avresample sdl"
2544 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2545 avplay_suggest="shell32"
2546 avprobe_deps="avcodec avformat"
2547 avprobe_suggest="shell32"
2548
2549 # documentation
2550 pod2man_deps="doc"
2551 texi2html_deps="doc"
2552
2553 # default parameters
2554
2555 logfile="avbuild/config.log"
2556
2557 # installation paths
2558 prefix_default="/usr/local"
2559 bindir_default='${prefix}/bin'
2560 datadir_default='${prefix}/share/avconv'
2561 docdir_default='${prefix}/share/doc/libav'
2562 incdir_default='${prefix}/include'
2563 libdir_default='${prefix}/lib'
2564 mandir_default='${prefix}/share/man'
2565 shlibdir_default="$libdir_default"
2566
2567 # toolchain
2568 ar_default="ar"
2569 cc_default="gcc"
2570 host_cc_default="gcc"
2571 x86asmexe_default="nasm"
2572 ln_s="ln -s -f"
2573 nm_default="nm -g"
2574 pkg_config_default=pkg-config
2575 ranlib="ranlib"
2576 strip="strip"
2577 version_script='--version-script'
2578
2579 # machine
2580 arch_default=$(uname -m)
2581 cpu="generic"
2582 intrinsics="none"
2583
2584 # OS
2585 target_os_default=$(tolower $(uname -s))
2586 host_os=$target_os_default
2587
2588 # configurable options
2589 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2590
2591 enable asm
2592 enable debug
2593 enable doc
2594 enable faan faandct faanidct
2595 enable optimizations
2596 enable safe_bitstream_reader
2597 enable static
2598 enable swscale_alpha
2599 enable valgrind_backtrace
2600
2601 # By default, enable only those hwaccels that have no external dependencies.
2602 enable d3d11va dxva2 vda vdpau
2603
2604 # internal components are enabled by default
2605 enable $EXTRALIBS_LIST
2606
2607 # Avoid external, non-system, libraries getting enabled by dependency resolution
2608 disable $EXTERNAL_LIBRARY_LIST
2609
2610 # build settings
2611 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2612 LIBPREF="lib"
2613 LIBSUF=".a"
2614 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2615 SLIBPREF="lib"
2616 SLIBSUF=".so"
2617 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2618 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2619 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2620 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2621 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2622 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2623 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2624
2625 asflags_filter=echo
2626 cflags_filter=echo
2627 ldflags_filter=echo
2628
2629 AS_C='-c'
2630 AS_O='-o $@'
2631 CC_C='-c'
2632 CC_E='-E -o $@'
2633 CC_O='-o $@'
2634 OBJCC_C='-c'
2635 OBJCC_E='-E -o $@'
2636 OBJCC_O='-o $@'
2637 X86ASM_O='-o $@'
2638 LD_O='-o $@'
2639 LD_LIB='-l%'
2640 LD_PATH='-L'
2641 HOSTCC_C='-c'
2642 HOSTCC_E='-E -o $@'
2643 HOSTCC_O='-o $@'
2644 HOSTLD_O='-o $@'
2645
2646 host_extralibs='-lm'
2647 host_cflags_filter=echo
2648 host_ldflags_filter=echo
2649
2650 target_path='$(CURDIR)'
2651
2652 # since the object filename is not given with the -MM flag, the compiler
2653 # is only able to print the basename, and we must add the path ourselves
2654 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2655 DEPFLAGS='-MM'
2656
2657 mkdir -p avbuild
2658
2659 # find source path
2660 if test -f configure; then
2661     source_path=.
2662 else
2663     source_path=$(cd $(dirname "$0"); pwd)
2664     echo "$source_path" | grep -q '[[:blank:]]' &&
2665         die "Out of tree builds are impossible with whitespace in source path."
2666     test -e "$source_path/config.h" &&
2667         die "Out of tree builds are impossible with config.h in source dir."
2668 fi
2669
2670 for v in "$@"; do
2671     r=${v#*=}
2672     l=${v%"$r"}
2673     r=$(sh_quote "$r")
2674     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2675 done
2676
2677 find_things(){
2678     thing=$1
2679     pattern=$2
2680     file=$source_path/$3
2681     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2682 }
2683
2684 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2685 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2686 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2687 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2688 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2689 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2690 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2691 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2692 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2693
2694 find_things_extern(){
2695     thing=$1
2696     pattern=$2
2697     file=$source_path/$3
2698     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2699 }
2700
2701 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2702 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2703
2704 AVCODEC_COMPONENTS_LIST="
2705     $BSF_LIST
2706     $DECODER_LIST
2707     $ENCODER_LIST
2708     $HWACCEL_LIST
2709     $PARSER_LIST
2710 "
2711
2712 AVDEVICE_COMPONENTS_LIST="
2713     $INDEV_LIST
2714     $OUTDEV_LIST
2715 "
2716
2717 AVFILTER_COMPONENTS_LIST="
2718     $FILTER_LIST
2719 "
2720
2721 AVFORMAT_COMPONENTS_LIST="
2722     $DEMUXER_LIST
2723     $MUXER_LIST
2724     $PROTOCOL_LIST
2725 "
2726
2727 ALL_COMPONENTS="
2728     $AVCODEC_COMPONENTS_LIST
2729     $AVDEVICE_COMPONENTS_LIST
2730     $AVFILTER_COMPONENTS_LIST
2731     $AVFORMAT_COMPONENTS_LIST
2732 "
2733
2734 for n in $COMPONENT_LIST; do
2735     v=$(toupper ${n%s})_LIST
2736     eval enable \$$v
2737     eval ${n}_if_any="\$$v"
2738 done
2739
2740 enable $ARCH_EXT_LIST
2741
2742 die_unknown(){
2743     echo "Unknown option \"$1\"."
2744     echo "See $0 --help for available options."
2745     exit 1
2746 }
2747
2748 print_3_columns() {
2749     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2750 }
2751
2752 show_list() {
2753     suffix=_$1
2754     shift
2755     echo $* | sed s/$suffix//g | print_3_columns
2756     exit 0
2757 }
2758
2759 rand_list(){
2760     IFS=', '
2761     set -- $*
2762     unset IFS
2763     for thing; do
2764         comp=${thing%:*}
2765         prob=${thing#$comp}
2766         prob=${prob#:}
2767         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2768         echo "prob ${prob:-0.5}"
2769         printf '%s\n' $comp
2770     done
2771 }
2772
2773 do_random(){
2774     action=$1
2775     shift
2776     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2777     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2778 }
2779
2780 for opt do
2781     optval="${opt#*=}"
2782     case "$opt" in
2783         --extra-ldflags=*)
2784             add_ldflags $optval
2785         ;;
2786         --extra-ldexeflags=*)
2787             add_ldexeflags $optval
2788         ;;
2789         --extra-libs=*)
2790             add_extralibs $optval
2791         ;;
2792         --disable-devices)
2793             disable $INDEV_LIST $OUTDEV_LIST
2794         ;;
2795         --enable-debug=*)
2796             debuglevel="$optval"
2797         ;;
2798         --disable-programs)
2799             disable $PROGRAM_LIST
2800         ;;
2801         --disable-everything)
2802             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2803         ;;
2804         --disable-all)
2805             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2806             disable $LIBRARY_LIST $PROGRAM_LIST doc
2807         ;;
2808         --enable-random|--disable-random)
2809             action=${opt%%-random}
2810             do_random ${action#--} $COMPONENT_LIST
2811         ;;
2812         --enable-random=*|--disable-random=*)
2813             action=${opt%%-random=*}
2814             do_random ${action#--} $optval
2815         ;;
2816         --enable-*=*|--disable-*=*)
2817             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2818             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2819             eval list=\$$(toupper $thing)_LIST
2820             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2821             $action $(filter "$name" $list)
2822         ;;
2823         --enable-avserver|--disable-avserver*)
2824             warn "avserver has been removed, the ${opt} option is only"\
2825                  "provided for compatibility and will be removed in the future"
2826         ;;
2827         --enable-yasm|--disable-yasm)
2828             warn "The ${opt} option is only provided for compatibility and will be\n"\
2829                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2830             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2831         ;;
2832         --enable-?*|--disable-?*)
2833             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2834             if is_in $option $COMPONENT_LIST; then
2835                 test $action = disable && action=unset
2836                 eval $action \$$(toupper ${option%s})_LIST
2837             elif is_in $option $CMDLINE_SELECT; then
2838                 $action $option
2839             else
2840                 die_unknown $opt
2841             fi
2842         ;;
2843         --list-*)
2844             NAME="${opt#--list-}"
2845             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2846             NAME=${NAME%s}
2847             eval show_list $NAME \$$(toupper $NAME)_LIST
2848         ;;
2849         --help|-h) show_help
2850         ;;
2851         --quiet|-q) quiet=yes
2852         ;;
2853         *)
2854             optname="${opt%%=*}"
2855             optname="${optname#--}"
2856             optname=$(echo "$optname" | sed 's/-/_/g')
2857             if is_in $optname $CMDLINE_SET; then
2858                 eval $optname='$optval'
2859             elif is_in $optname $CMDLINE_APPEND; then
2860                 append $optname "$optval"
2861             else
2862                 die_unknown $opt
2863             fi
2864         ;;
2865     esac
2866 done
2867
2868 for e in $env; do
2869     eval "export $e"
2870 done
2871
2872 disabled logging && logfile=/dev/null
2873
2874 # Die early if licensing-related configure options are incompatible.
2875 die_license_disabled() {
2876     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2877 }
2878
2879 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2880 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2881 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2882
2883 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2884
2885 # Disable all the library-specific components if the library itself
2886 # is disabled, see AVCODEC_LIST and following _LIST variables.
2887
2888 disable_components(){
2889     disabled ${1} && disable $(
2890         eval components="\$$(toupper ${1})_COMPONENTS"
2891         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2892     )
2893 }
2894
2895 map 'disable_components $v' $LIBRARY_LIST
2896
2897 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2898 set >> $logfile
2899
2900 case "$toolchain" in
2901     *-asan)
2902         cc_default="${toolchain%-asan}"
2903         add_cflags  -fsanitize=address
2904         add_ldflags -fsanitize=address
2905     ;;
2906     *-msan)
2907         cc_default="${toolchain%-msan}"
2908         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2909         add_ldflags -fsanitize=memory
2910     ;;
2911     *-tsan)
2912         cc_default="${toolchain%-tsan}"
2913         add_cflags  -fsanitize=thread -fPIE
2914         add_ldflags -fsanitize=thread -pie
2915         case "$toolchain" in
2916             gcc-tsan)
2917                 add_cflags  -fPIC
2918                 add_ldflags -fPIC
2919                 ;;
2920         esac
2921     ;;
2922     *-usan)
2923         cc_default="${toolchain%-usan}"
2924         add_cflags  -fsanitize=undefined
2925         add_ldflags -fsanitize=undefined
2926         case "$toolchain" in
2927             clang-usan)
2928                 add_cflags -O1
2929                 ;;
2930         esac
2931     ;;
2932     valgrind-*)
2933         target_exec_default="valgrind"
2934         case "$toolchain" in
2935             valgrind-massif)
2936                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2937                 ;;
2938             valgrind-memcheck)
2939                 target_exec_args="--track-origins=yes --leak-check=full"
2940                 ;;
2941         esac
2942     ;;
2943     msvc)
2944         # Check whether the current MSVC version needs the C99 converter.
2945         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2946         # support enough of C99 to build libav. Default to the new
2947         # behaviour if the regexp was unable to match anything, since this
2948         # successfully parses the version number of existing supported
2949         # versions that require the converter (MSVC 2010 and 2012).
2950         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2951         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2952             cc_default="cl"
2953         else
2954             cc_default="c99wrap cl"
2955         fi
2956         ld_default="$source_path/compat/windows/mslink"
2957         nm_default="dumpbin -symbols"
2958         ar_default="lib"
2959         case "$arch" in
2960         arm*)
2961             as_default="armasm"
2962             ;;
2963         esac
2964         target_os_default="win32"
2965         # Use a relative path for TMPDIR. This makes sure all the
2966         # ffconf temp files are written with a relative path, avoiding
2967         # issues with msys/win32 path conversion for MSVC parameters
2968         # such as -Fo<file> or -out:<file>.
2969         TMPDIR=.
2970     ;;
2971     icl)
2972         cc_default="icl"
2973         ld_default="xilink"
2974         nm_default="dumpbin -symbols"
2975         ar_default="xilib"
2976         target_os_default="win32"
2977         TMPDIR=.
2978     ;;
2979     gcov)
2980         add_cflags  -fprofile-arcs -ftest-coverage
2981         add_ldflags -fprofile-arcs -ftest-coverage
2982     ;;
2983     llvm-cov)
2984         add_cflags -fprofile-arcs -ftest-coverage
2985         add_ldflags --coverage
2986     ;;
2987     hardened)
2988         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2989         add_cflags   -fno-strict-overflow -fstack-protector-all
2990         add_ldflags  -Wl,-z,relro -Wl,-z,now
2991     ;;
2992     ?*)
2993         die "Unknown toolchain $toolchain"
2994     ;;
2995 esac
2996
2997 test -n "$cross_prefix" && enable cross_compile
2998
2999 if enabled cross_compile; then
3000     test -n "$arch" && test -n "$target_os" ||
3001         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3002 fi
3003
3004 ar_default="${cross_prefix}${ar_default}"
3005 cc_default="${cross_prefix}${cc_default}"
3006 objcc_default="${cross_prefix}${objcc_default}"
3007 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3008 nm_default="${cross_prefix}${nm_default}"
3009 pkg_config_default="${cross_prefix}${pkg_config_default}"
3010 ranlib="${cross_prefix}${ranlib}"
3011 strip="${cross_prefix}${strip}"
3012
3013 sysinclude_default="${sysroot}/usr/include"
3014
3015 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3016 enabled cross_compile || host_cc_default=$cc
3017 set_default host_cc
3018
3019 if ! $pkg_config --version >/dev/null 2>&1; then
3020     warn "$pkg_config not found, library detection may fail."
3021     pkg_config=false
3022 fi
3023
3024 exesuf() {
3025     case $1 in
3026         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3027     esac
3028 }
3029
3030 EXESUF=$(exesuf $target_os)
3031 HOSTEXESUF=$(exesuf $host_os)
3032
3033 # set temporary file name
3034 : ${TMPDIR:=$TEMPDIR}
3035 : ${TMPDIR:=$TMP}
3036 : ${TMPDIR:=/tmp}
3037
3038 if ! check_cmd mktemp -u XXXXXX; then
3039     # simple replacement for missing mktemp
3040     # NOT SAFE FOR GENERAL USE
3041     mktemp(){
3042         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3043         echo "$tmpname"
3044         mkdir "$tmpname"
3045     }
3046 fi
3047
3048 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3049     die "Unable to create temporary directory in $TMPDIR."
3050
3051 tmpfile(){
3052     tmp="${AVTMPDIR}/test"$2
3053     (set -C; exec > $tmp) 2> /dev/null ||
3054         die "Unable to create temporary file in $AVTMPDIR."
3055     eval $1=$tmp
3056 }
3057
3058 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3059 trap 'exit 2' INT
3060
3061 tmpfile TMPASM .asm
3062 tmpfile TMPC   .c
3063 tmpfile TMPE   $EXESUF
3064 tmpfile TMPH   .h
3065 tmpfile TMPO   .o
3066 tmpfile TMPS   .S
3067 tmpfile TMPSH  .sh
3068 tmpfile TMPV   .ver
3069
3070 unset -f mktemp
3071
3072 chmod +x $TMPE
3073
3074 # make sure we can execute files in $TMPDIR
3075 cat > $TMPSH 2>> $logfile <<EOF
3076 #! /bin/sh
3077 EOF
3078 chmod +x $TMPSH >> $logfile 2>&1
3079 if ! $TMPSH >> $logfile 2>&1; then
3080     cat <<EOF
3081 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3082 variable to another directory and make sure that it is not mounted noexec.
3083 EOF
3084     die "Sanity test failed."
3085 fi
3086
3087 armasm_flags(){
3088     for flag; do
3089         case $flag in
3090             # Filter out MSVC cl.exe options from cflags that shouldn't
3091             # be passed to gas-preprocessor
3092             -M[TD]*)                                            ;;
3093             *)                  echo $flag                      ;;
3094         esac
3095    done
3096 }
3097
3098 ccc_flags(){
3099     for flag; do
3100         case $flag in
3101             -std=c99)           echo -c99                       ;;
3102             -mcpu=*)            echo -arch ${flag#*=}           ;;
3103             -mieee)             echo -ieee                      ;;
3104             -O*|-fast)          echo $flag                      ;;
3105             -fno-math-errno)    echo -assume nomath_errno       ;;
3106             -g)                 echo -g3                        ;;
3107             -Wall)              echo -msg_enable level2         ;;
3108             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3109             -Wl,*)              echo $flag                      ;;
3110             -f*|-W*)                                            ;;
3111             *)                  echo $flag                      ;;
3112         esac
3113    done
3114 }
3115
3116 cparser_flags(){
3117     for flag; do
3118         case $flag in
3119             -Wno-switch)             echo -Wno-switch-enum ;;
3120             -Wno-format-zero-length) ;;
3121             -Wdisabled-optimization) ;;
3122             -Wno-pointer-sign)       echo -Wno-other ;;
3123             *)                       echo $flag ;;
3124         esac
3125     done
3126 }
3127
3128 msvc_common_flags(){
3129     for flag; do
3130         case $flag in
3131             # In addition to specifying certain flags under the compiler
3132             # specific filters, they must be specified here as well or else the
3133             # generic catch all at the bottom will print the original flag.
3134             -Wall)                ;;
3135             -Wextra)              ;;
3136             -std=c99)             ;;
3137             # Common flags
3138             -fomit-frame-pointer) ;;
3139             -g)                   echo -Z7 ;;
3140             -fno-math-errno)      ;;
3141             -fno-common)          ;;
3142             -fno-signed-zeros)    ;;
3143             -fPIC)                ;;
3144             -mthumb)              ;;
3145             -march=*)             ;;
3146             -lz)                  echo zlib.lib ;;
3147             -lx264)               echo libx264.lib ;;
3148             -l*)                  echo ${flag#-l}.lib ;;
3149             -L*)                  echo -libpath:${flag#-L} ;;
3150             *)                    echo $flag ;;
3151         esac
3152     done
3153 }
3154
3155 msvc_flags(){
3156     msvc_common_flags "$@"
3157     for flag; do
3158         case $flag in
3159             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3160                                        -wd4554 ;;
3161             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3162                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3163                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3164                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3165         esac
3166     done
3167 }
3168
3169 icl_flags(){
3170     msvc_common_flags "$@"
3171     for flag; do
3172         case $flag in
3173             # Despite what Intel's documentation says -Wall, which is supported
3174             # on Windows, does enable remarks so disable them here.
3175             -Wall)                echo $flag -Qdiag-disable:remark ;;
3176             -std=c99)             echo -Qstd=c99 ;;
3177         esac
3178     done
3179 }
3180
3181 pgi_flags(){
3182     for flag; do
3183         case $flag in
3184             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3185             -fomit-frame-pointer) echo -Mnoframe ;;
3186             -g)                   echo -gopt ;;
3187             *)                    echo $flag ;;
3188         esac
3189     done
3190 }
3191
3192 suncc_flags(){
3193     for flag; do
3194         case $flag in
3195             -march=*|-mcpu=*)
3196                 case "${flag#*=}" in
3197                     native)                   echo -xtarget=native       ;;
3198                     v9|niagara)               echo -xarch=sparc          ;;
3199                     ultrasparc)               echo -xarch=sparcvis       ;;
3200                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3201                     i586|pentium)             echo -xchip=pentium        ;;
3202                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3203                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3204                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3205                     pentium4*)          echo -xtarget=pentium4           ;;
3206                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3207                     *-sse3)             echo -xarch=sse3                 ;;
3208                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3209                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3210                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3211                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3212                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3213                     k8|opteron|athlon64|athlon-fx)
3214                                                echo -xarch=sse2a         ;;
3215                     athlon*)                   echo -xarch=pentium_proa  ;;
3216                 esac
3217                 ;;
3218             -std=c99)             echo -xc99              ;;
3219             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3220             -fPIC)                echo -KPIC -xcode=pic32 ;;
3221             -W*,*)                echo $flag              ;;
3222             -f*-*|-W*|-mimpure-text)                      ;;
3223             -shared)              echo -G                 ;;
3224             *)                    echo $flag              ;;
3225         esac
3226     done
3227 }
3228
3229 tms470_flags(){
3230     for flag; do
3231         case $flag in
3232             -march=*|-mcpu=*)
3233                 case "${flag#*=}" in
3234                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3235                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3236                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3237                     armv6*|arm11*)          echo -mv=6   ;;
3238                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3239                                             echo -mv=5e  ;;
3240                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3241                 esac
3242                 ;;
3243             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3244             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3245             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3246             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3247             -msoft-float)   echo --float_support=vfplib       ;;
3248             -O[0-3]|-mf=*)  echo $flag                        ;;
3249             -g)             echo -g -mn                       ;;
3250             -pds=*)         echo $flag                        ;;
3251             -D*|-I*)        echo $flag                        ;;
3252             --gcc|--abi=*)  echo $flag                        ;;
3253             -me)            echo $flag                        ;;
3254         esac
3255     done
3256 }
3257
3258 probe_cc(){
3259     pfx=$1
3260     _cc=$2
3261
3262     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3263     unset _ld_o _ldflags _ld_lib _ld_path
3264     unset _depflags _DEPCMD _DEPFLAGS
3265     _flags_filter=echo
3266
3267     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3268         _type=llvm_gcc
3269         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3270         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3271         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3272         _cflags_speed='-O3'
3273         _cflags_size='-Os'
3274     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3275         _type=gcc
3276         gcc_version=$($_cc --version | head -n1)
3277         gcc_basever=$($_cc -dumpversion)
3278         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3279         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3280         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3281         if ! $_cc -dumpversion | grep -q '^2\.'; then
3282             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3283         fi
3284         _cflags_speed='-O3'
3285         _cflags_size='-Os'
3286     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3287         _type=icc
3288         _ident=$($_cc --version | head -n1)
3289         _depflags='-MMD'
3290         _cflags_speed='-O3'
3291         _cflags_size='-Os'
3292         _cflags_noopt='-O1'
3293     elif $_cc -v 2>&1 | grep -q xlc; then
3294         _type=xlc
3295         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3296         _cflags_speed='-O5'
3297         _cflags_size='-O5 -qcompact'
3298     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3299         _type=ccc
3300         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3301         _DEPFLAGS='-M'
3302         _cflags_speed='-fast'
3303         _cflags_size='-O1'
3304         _flags_filter=ccc_flags
3305     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3306         test -d "$sysroot" || die "No valid sysroot specified."
3307         _type=armcc
3308         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3309         armcc_conf="$PWD/armcc.conf"
3310         $_cc --arm_linux_configure                 \
3311              --arm_linux_config_file="$armcc_conf" \
3312              --configure_sysroot="$sysroot"        \
3313              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3314              die "Error creating armcc configuration file."
3315         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3316         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3317         as_default="${cross_prefix}gcc"
3318         _depflags='-MMD'
3319         _cflags_speed='-O3'
3320         _cflags_size='-Os'
3321     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3322         _type=tms470
3323         _ident=$($_cc -version | head -n1 | tr -s ' ')
3324         _flags='--gcc --abi=eabi -me'
3325         _cc_e='-ppl -fe=$@'
3326         _cc_o='-fe=$@'
3327         _depflags='-ppa -ppd=$(@:.o=.d)'
3328         _cflags_speed='-O3 -mf=5'
3329         _cflags_size='-O3 -mf=2'
3330         _flags_filter=tms470_flags
3331     elif $_cc -v 2>&1 | grep -q clang; then
3332         _type=clang
3333         _ident=$($_cc --version 2>/dev/null | head -n1)
3334         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3335         _cflags_speed='-O3'
3336         _cflags_size='-Os'
3337     elif $_cc -V 2>&1 | grep -q Sun; then
3338         _type=suncc
3339         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3340         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3341         _DEPFLAGS='-xM1 -xc99'
3342         _ldflags='-std=c99'
3343         _cflags_speed='-O5'
3344         _cflags_size='-O5 -xspace'
3345         _flags_filter=suncc_flags
3346     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3347         _type=pathscale
3348         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3349         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3350         _cflags_speed='-O2'
3351         _cflags_size='-Os'
3352         _flags_filter='filter_out -Wdisabled-optimization'
3353     elif $_cc -v 2>&1 | grep -q Open64; then
3354         _type=open64
3355         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3356         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3357         _cflags_speed='-O2'
3358         _cflags_size='-Os'
3359         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3360     elif $_cc -V 2>&1 | grep -q Portland; then
3361         _type=pgi
3362         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3363         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3364         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3365         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3366         _cflags_noopt="-O1"
3367         _flags_filter=pgi_flags
3368     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3369         _type=armasm
3370         _ident=$($_cc | head -n1)
3371         # 4509: "This form of conditional instruction is deprecated"
3372         _flags="-nologo -ignore 4509"
3373         _flags_filter=armasm_flags
3374     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3375         _type=msvc
3376         _ident=$($_cc 2>&1 | head -n1)
3377         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3378         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3379         _cflags_speed="-O2"
3380         _cflags_size="-O1"
3381         _cflags_noopt="-O1"
3382         if $_cc -nologo- 2>&1 | grep -q Linker; then
3383             _ld_o='-out:$@'
3384         else
3385             _ld_o='-Fe$@'
3386         fi
3387         _cc_o='-Fo$@'
3388         _cc_e='-P -Fi$@'
3389         _flags_filter=msvc_flags
3390         _ld_lib='lib%.a'
3391         _ld_path='-libpath:'
3392         _flags='-nologo'
3393     elif $_cc 2>&1 | grep -q Intel; then
3394         _type=icl
3395         _ident=$($_cc 2>&1 | head -n1)
3396         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3397         # Not only is O3 broken on 13.x+ but it is slower on all previous
3398         # versions (tested) as well.
3399         _cflags_speed="-O2"
3400         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3401         if $_cc 2>&1 | grep -q Linker; then
3402             _ld_o='-out:$@'
3403         else
3404             _ld_o='-Fe$@'
3405         fi
3406         _cc_o='-Fo$@'
3407         _cc_e='-P'
3408         _flags_filter=icl_flags
3409         _ld_lib='lib%.a'
3410         _ld_path='-libpath:'
3411         # -Qdiag-error to make icl error when seeing certain unknown arguments
3412         _flags='-nologo -Qdiag-error:4044,10157'
3413         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3414         # with MSVC which enables it by default.
3415         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3416     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3417         # lld can emulate multiple different linkers; in ms link.exe mode,
3418         # the -? parameter gives the help output which contains an identifyable
3419         # string, while it gives an error in other modes.
3420         _type=lld-link
3421         # The link.exe mode doesn't have a switch for getting the version,
3422         # but we can force it back to gnu mode and get the version from there.
3423         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3424         _ld_o='-out:$@'
3425         _flags_filter=msvc_flags
3426         _ld_lib='lib%.a'
3427         _ld_path='-libpath:'
3428     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3429         _type=cparser
3430         _ident=$($_cc --version | head -n1)
3431         _depflags='-MMD'
3432         _cflags_speed='-O4'
3433         _cflags_size='-O2'
3434         _flags_filter=cparser_flags
3435     fi
3436
3437     eval ${pfx}_type=\$_type
3438     eval ${pfx}_ident=\$_ident
3439 }
3440
3441 set_ccvars(){
3442     eval ${1}_C=\${_cc_c-\${${1}_C}}
3443     eval ${1}_E=\${_cc_e-\${${1}_E}}
3444     eval ${1}_O=\${_cc_o-\${${1}_O}}
3445
3446     if [ -n "$_depflags" ]; then
3447         eval ${1}_DEPFLAGS=\$_depflags
3448     else
3449         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3450         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3451         eval DEP${1}FLAGS=\$_flags
3452     fi
3453 }
3454
3455 probe_cc cc "$cc"
3456 cflags_filter=$_flags_filter
3457 cflags_speed=$_cflags_speed
3458 cflags_size=$_cflags_size
3459 cflags_noopt=$_cflags_noopt
3460 add_cflags $_flags $_cflags
3461 cc_ldflags=$_ldflags
3462 set_ccvars CC
3463
3464 probe_cc hostcc "$host_cc"
3465 host_cflags_filter=$_flags_filter
3466 host_cflags_speed=$_cflags_speed
3467 add_host_cflags  $_flags $_cflags
3468 set_ccvars HOSTCC
3469
3470 test -n "$cc_type" && enable $cc_type ||
3471     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3472
3473 : ${as_default:=$cc}
3474 : ${objcc_default:=$cc}
3475 : ${dep_cc_default:=$cc}
3476 : ${ld_default:=$cc}
3477 : ${host_ld_default:=$host_cc}
3478 set_default ar as objcc dep_cc ld host_ld
3479
3480 probe_cc as "$as"
3481 asflags_filter=$_flags_filter
3482 add_asflags $_flags $_cflags
3483 set_ccvars AS
3484
3485 probe_cc objcc "$objcc"
3486 objcflags_filter=$_flags_filter
3487 add_objcflags $_flags $_cflags
3488 set_ccvars OBJC
3489
3490 probe_cc ld "$ld"
3491 ldflags_filter=$_flags_filter
3492 add_ldflags $_flags $_ldflags
3493 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3494 LD_O=${_ld_o-$LD_O}
3495 LD_LIB=${_ld_lib-$LD_LIB}
3496 LD_PATH=${_ld_path-$LD_PATH}
3497
3498 probe_cc hostld "$host_ld"
3499 host_ldflags_filter=$_flags_filter
3500 add_host_ldflags $_flags $_ldflags
3501 HOSTLD_O=${_ld_o-$HOSTLD_O}
3502
3503 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3504     probe_cc depcc "$dep_cc"
3505     CCDEP=${_DEPCMD:-$DEPCMD}
3506     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3507     DEPCCFLAGS=$_flags
3508 fi
3509
3510 if $ar 2>&1 | grep -q Microsoft; then
3511     arflags="-nologo"
3512     ar_o='-out:$@'
3513 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3514     arflags="rq"
3515     ar_o='$@'
3516 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3517     arflags='-Xany -r -c'
3518     ar_o='$@'
3519 else
3520     arflags="rc"
3521     ar_o='$@'
3522 fi
3523
3524 add_cflags $extra_cflags
3525 add_objcflags $extra_objcflags
3526 add_asflags $extra_cflags
3527
3528 if test -n "$sysroot"; then
3529     case "$cc_type" in
3530         gcc|llvm_gcc|clang)
3531             add_cppflags --sysroot="$sysroot"
3532             add_ldflags --sysroot="$sysroot"
3533         ;;
3534         tms470)
3535             add_cppflags -I"$sysinclude"
3536             add_ldflags  --sysroot="$sysroot"
3537         ;;
3538     esac
3539 fi
3540
3541 if test "$cpu" = host; then
3542     enabled cross_compile &&
3543         die "--cpu=host makes no sense when cross-compiling."
3544
3545     case "$cc_type" in
3546         gcc|llvm_gcc)
3547             check_native(){
3548                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3549                 sed -n "/cc1.*$1=/{
3550                             s/.*$1=\\([^ ]*\\).*/\\1/
3551                             p
3552                             q
3553                         }" $TMPE
3554             }
3555             cpu=$(check_native -march || check_native -mcpu)
3556         ;;
3557     esac
3558
3559     test "${cpu:-host}" = host &&
3560         die "--cpu=host not supported with compiler $cc"
3561 fi
3562
3563 # Deal with common $arch aliases
3564 case "$arch" in
3565     aarch64|arm64)
3566         arch="aarch64"
3567     ;;
3568     arm*)
3569         arch="arm"
3570     ;;
3571     mips*|IP*)
3572         case "$arch" in
3573         *el)
3574             add_cppflags -EL
3575             add_ldflags -EL
3576         ;;
3577         *eb)
3578             add_cppflags -EB
3579             add_ldflags -EB
3580         ;;
3581         esac
3582         arch="mips"
3583     ;;
3584     parisc*|hppa*)
3585         arch="parisc"
3586     ;;
3587     "Power Macintosh"|ppc*|powerpc*)
3588         arch="ppc"
3589     ;;
3590     s390|s390x)
3591         arch="s390"
3592     ;;
3593     sh4|sh)
3594         arch="sh4"
3595     ;;
3596     sun4u|sparc*)
3597         arch="sparc"
3598     ;;
3599     tilegx|tile-gx)
3600         arch="tilegx"
3601     ;;
3602     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3603         arch="x86"
3604     ;;
3605 esac
3606
3607 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3608 enable $arch
3609
3610 # Add processor-specific flags
3611 if enabled aarch64; then
3612
3613     case $cpu in
3614         armv*)
3615             cpuflags="-march=$cpu"
3616         ;;
3617         *)
3618             cpuflags="-mcpu=$cpu"
3619         ;;
3620     esac
3621
3622 elif enabled alpha; then
3623
3624     cpuflags="-mcpu=$cpu"
3625
3626 elif enabled arm; then
3627
3628     check_arm_arch() {
3629         check_cpp_condition stddef.h \
3630             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3631             $cpuflags
3632     }
3633
3634     probe_arm_arch() {
3635         if   check_arm_arch 4;        then echo armv4
3636         elif check_arm_arch 4T;       then echo armv4t
3637         elif check_arm_arch 5;        then echo armv5
3638         elif check_arm_arch 5E;       then echo armv5e
3639         elif check_arm_arch 5T;       then echo armv5t
3640         elif check_arm_arch 5TE;      then echo armv5te
3641         elif check_arm_arch 5TEJ;     then echo armv5te
3642         elif check_arm_arch 6;        then echo armv6
3643         elif check_arm_arch 6J;       then echo armv6j
3644         elif check_arm_arch 6K;       then echo armv6k
3645         elif check_arm_arch 6Z;       then echo armv6z
3646         elif check_arm_arch 6ZK;      then echo armv6zk
3647         elif check_arm_arch 6T2;      then echo armv6t2
3648         elif check_arm_arch 7;        then echo armv7
3649         elif check_arm_arch 7A  7_A;  then echo armv7-a
3650         elif check_arm_arch 7S;       then echo armv7-a
3651         elif check_arm_arch 7R  7_R;  then echo armv7-r
3652         elif check_arm_arch 7M  7_M;  then echo armv7-m
3653         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3654         elif check_arm_arch 8A  8_A;  then echo armv8-a
3655         fi
3656     }
3657
3658     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3659
3660     case $cpu in
3661         armv*)
3662             cpuflags="-march=$cpu"
3663             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3664         ;;
3665         *)
3666             cpuflags="-mcpu=$cpu"
3667             case $cpu in
3668                 cortex-a*)                               subarch=armv7a  ;;
3669                 cortex-r*)                               subarch=armv7r  ;;
3670                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3671                 arm11*)                                  subarch=armv6   ;;
3672                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3673                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3674                 *)                             subarch=$(probe_arm_arch) ;;
3675             esac
3676         ;;
3677     esac
3678
3679     case "$subarch" in
3680         armv5t*)    enable fast_clz                ;;
3681         armv[6-8]*) enable fast_clz fast_unaligned ;;
3682     esac
3683
3684 elif enabled avr32; then
3685
3686     case $cpu in
3687         ap7[02]0[0-2])
3688             subarch="avr32_ap"
3689             cpuflags="-mpart=$cpu"
3690         ;;
3691         ap)
3692             subarch="avr32_ap"
3693             cpuflags="-march=$cpu"
3694         ;;
3695         uc3[ab]*)
3696             subarch="avr32_uc"
3697             cpuflags="-mcpu=$cpu"
3698         ;;
3699         uc)
3700             subarch="avr32_uc"
3701             cpuflags="-march=$cpu"
3702         ;;
3703     esac
3704
3705 elif enabled bfin; then
3706
3707     cpuflags="-mcpu=$cpu"
3708
3709 elif enabled mips; then
3710
3711     cpuflags="-march=$cpu"
3712
3713 elif enabled ppc; then
3714
3715     disable ldbrx
3716
3717     case $(tolower $cpu) in
3718         601|ppc601|powerpc601)
3719             cpuflags="-mcpu=601"
3720             disable altivec
3721         ;;
3722         603*|ppc603*|powerpc603*)
3723             cpuflags="-mcpu=603"
3724             disable altivec
3725         ;;
3726         604*|ppc604*|powerpc604*)
3727             cpuflags="-mcpu=604"
3728             disable altivec
3729         ;;
3730         g3|75*|ppc75*|powerpc75*)
3731             cpuflags="-mcpu=750"
3732             disable altivec
3733         ;;
3734         g4|745*|ppc745*|powerpc745*)
3735             cpuflags="-mcpu=7450"
3736             disable vsx
3737         ;;
3738         74*|ppc74*|powerpc74*)
3739             cpuflags="-mcpu=7400"
3740             disable vsx
3741         ;;
3742         g5|970|ppc970|powerpc970)
3743             cpuflags="-mcpu=970"
3744             disable vsx
3745         ;;
3746         power[3-6]*)
3747             cpuflags="-mcpu=$cpu"
3748             disable vsx
3749         ;;
3750         power[7-8]*)
3751             cpuflags="-mcpu=$cpu"
3752             enable ldbrx
3753         ;;
3754         cell)
3755             cpuflags="-mcpu=cell"
3756             enable ldbrx
3757             disable vsx
3758         ;;
3759         e500mc)
3760             cpuflags="-mcpu=e500mc"
3761             disable altivec
3762         ;;
3763         e500v2)
3764             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3765             disable altivec
3766             disable dcbzl
3767         ;;
3768         e500)
3769             cpuflags="-mcpu=8540 -mhard-float"
3770             disable altivec
3771             disable dcbzl
3772         ;;
3773     esac
3774
3775 elif enabled sparc; then
3776
3777     case $cpu in
3778         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3779             cpuflags="-mcpu=$cpu"
3780         ;;
3781         ultrasparc*|niagara[234])
3782             cpuflags="-mcpu=$cpu"
3783         ;;
3784     esac
3785
3786 elif enabled x86; then
3787
3788     case $cpu in
3789         i[345]86|pentium)
3790             cpuflags="-march=$cpu"
3791             disable i686
3792             disable mmx
3793         ;;
3794         # targets that do NOT support nopl and conditional mov (cmov)
3795         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3796             cpuflags="-march=$cpu"
3797             disable i686
3798         ;;
3799         # targets that do support nopl and conditional mov (cmov)
3800         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3801             cpuflags="-march=$cpu"
3802             enable i686
3803             enable fast_cmov
3804         ;;
3805         # targets that do support conditional mov but on which it's slow
3806         pentium4|pentium4m|prescott|nocona)
3807             cpuflags="-march=$cpu"
3808             enable i686
3809             disable fast_cmov
3810         ;;
3811     esac
3812
3813 fi
3814
3815 if [ "$cpu" != generic ]; then
3816     add_cflags  $cpuflags
3817     add_asflags $cpuflags
3818     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3819 fi
3820
3821 # compiler sanity check
3822 check_exec <<EOF
3823 int main(void){ return 0; }
3824 EOF
3825 if test "$?" != 0; then
3826     echo "$cc is unable to create an executable file."
3827     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3828         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3829         echo "Only do this if you know what cross compiling means."
3830     fi
3831     die "C compiler test failed."
3832 fi
3833
3834 add_cppflags -D_ISOC99_SOURCE
3835
3836 # some compilers silently accept -std=c11, so we also need to check that the
3837 # version macro is defined properly
3838 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3839     add_cflags -std=c11 ||
3840     check_cflags -std=c99
3841
3842 check_cppflags -D_FILE_OFFSET_BITS=64
3843 check_cppflags -D_LARGEFILE_SOURCE
3844
3845 add_host_cppflags -D_ISOC99_SOURCE
3846 check_host_cflags -std=c99
3847 check_host_cflags -Wall
3848 check_host_cflags $host_cflags_speed
3849
3850 check_64bit(){
3851     arch32=$1
3852     arch64=$2
3853     expr=$3
3854     check_code cc "" "int test[2*($expr) - 1]" &&
3855         subarch=$arch64 || subarch=$arch32
3856 }
3857
3858 case "$arch" in
3859     aarch64|alpha|ia64)
3860         spic=$shared
3861     ;;
3862     mips)
3863         check_64bit mips mips64 '_MIPS_SIM > 1'
3864         spic=$shared
3865     ;;
3866     parisc)
3867         check_64bit parisc parisc64 'sizeof(void *) > 4'
3868         spic=$shared
3869     ;;
3870     ppc)
3871         check_64bit ppc ppc64 'sizeof(void *) > 4'
3872         spic=$shared
3873     ;;
3874     s390)
3875         check_64bit s390 s390x 'sizeof(void *) > 4'
3876         spic=$shared
3877     ;;
3878     sparc)
3879         check_64bit sparc sparc64 'sizeof(void *) > 4'
3880         spic=$shared
3881     ;;
3882     x86)
3883         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3884         if test "$subarch" = "x86_64"; then
3885             spic=$shared
3886         fi
3887     ;;
3888 esac
3889
3890 enable $subarch
3891 enabled spic && enable_weak pic
3892
3893 enabled x86_64 && objformat=elf64 || objformat="elf32"
3894
3895 # OS specific
3896 case $target_os in
3897     aix)
3898         SHFLAGS=-shared
3899         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3900         enabled shared && add_ldflags -Wl,-brtl
3901         ;;
3902     android)
3903         disable symver
3904         enable section_data_rel_ro
3905         SLIB_INSTALL_NAME='$(SLIBNAME)'
3906         SLIB_INSTALL_LINKS=
3907         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3908         ;;
3909     haiku)
3910         prefix_default="/boot/common"
3911         network_extralibs="-lnetwork"
3912         host_extralibs=
3913         ;;
3914     sunos)
3915         SHFLAGS='-shared -Wl,-h,$$(@F)'
3916         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3917         network_extralibs="-lsocket -lnsl"
3918         # When using suncc to build, the Solaris linker will mark
3919         # an executable with each instruction set encountered by
3920         # the Solaris assembler.  As our libraries contain their own
3921         # guards for processor-specific code, instead suppress
3922         # generation of the HWCAPS ELF section on Solaris x86 only.
3923         enabled_all suncc x86 &&
3924             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3925             add_ldflags -Wl,-M,mapfile
3926         nm_default='nm -P -g'
3927         version_script='-M'
3928         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3929         ;;
3930     netbsd)
3931         disable symver
3932         oss_indev_extralibs="-lossaudio"
3933         oss_outdev_extralibs="-lossaudio"
3934         ;;
3935     openbsd|bitrig)
3936         disable symver
3937         SHFLAGS='-shared'
3938         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3939         SLIB_INSTALL_LINKS=
3940         oss_indev_extralibs="-lossaudio"
3941         oss_outdev_extralibs="-lossaudio"
3942         ;;
3943     dragonfly)
3944         disable symver
3945         ;;
3946     freebsd)
3947         ;;
3948     bsd/os)
3949         add_extralibs -lpoll -lgnugetopt
3950         ;;
3951     darwin)
3952         enabled ppc && add_asflags -force_cpusubtype_ALL
3953         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3954         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3955         add_ldflags -Wl,-dynamic,-search_paths_first
3956         check_cflags -Werror=partial-availability
3957         SLIBSUF=".dylib"
3958         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3959         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3960         enabled x86_64 && objformat="macho64" || objformat="macho32"
3961         enabled_any pic shared ||
3962             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3963         check_header dispatch/dispatch.h &&
3964             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3965         ;;
3966     msys*)
3967         die "Native MSYS builds are discouraged, please use the MINGW environment."
3968         ;;
3969     mingw32*|mingw64*)
3970         if test $target_os = "mingw32ce"; then
3971             disable network
3972         else
3973             target_os=mingw32
3974         fi
3975         LIBTARGET=i386
3976         if enabled x86_64; then
3977             LIBTARGET="i386:x86-64"
3978         elif enabled arm; then
3979             LIBTARGET=arm-wince
3980         fi
3981         check_ldflags -Wl,--nxcompat
3982         check_ldflags -Wl,--dynamicbase
3983         shlibdir_default="$bindir_default"
3984         SLIBPREF=""
3985         SLIBSUF=".dll"
3986         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3987         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3988         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3989         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3990         SLIB_INSTALL_LINKS=
3991         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3992         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3993         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3994         enabled x86_64 && objformat="win64" || objformat="win32"
3995         dlltool="${cross_prefix}dlltool"
3996         ranlib=:
3997         enable dos_paths
3998         ;;
3999     win32|win64)
4000         disable symver
4001         if enabled shared; then
4002             # Link to the import library instead of the normal static library
4003             # for shared libs.
4004             LD_LIB='%.lib'
4005             # Cannot build both shared and static libs with MSVC or icl.
4006             disable static
4007         fi
4008         shlibdir_default="$bindir_default"
4009         SLIBPREF=""
4010         SLIBSUF=".dll"
4011         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4012         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4013         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4014         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4015         SLIB_INSTALL_LINKS=
4016         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4017         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4018         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4019         enabled x86_64 && objformat="win64" || objformat="win32"
4020         ranlib=:
4021         enable dos_paths
4022         ;;
4023     cygwin*)
4024         target_os=cygwin
4025         shlibdir_default="$bindir_default"
4026         SLIBPREF="cyg"
4027         SLIBSUF=".dll"
4028         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4029         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4030         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4031         SLIB_INSTALL_LINKS=
4032         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4033         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4034         enabled x86_64 && objformat="win64" || objformat="win32"
4035         enable dos_paths
4036         ;;
4037     *-dos|freedos|opendos)
4038         network_extralibs="-lsocket"
4039         objformat="coff"
4040         enable dos_paths
4041         add_cppflags -U__STRICT_ANSI__
4042         ;;
4043     linux)
4044         enable dv1394
4045         enable section_data_rel_ro
4046         ;;
4047     irix*)
4048         target_os=irix
4049         ranlib="echo ignoring ranlib"
4050         ;;
4051     os/2*)
4052         ln_s="cp -f"
4053         objformat="aout"
4054         add_cppflags -D_GNU_SOURCE
4055         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4056         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4057         LIBSUF="_s.a"
4058         SLIBPREF=""
4059         SLIBSUF=".dll"
4060         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4061         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4062         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4063             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4064             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4065             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4066             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4067         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4068             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4069         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4070         enable dos_paths
4071         ;;
4072     gnu/kfreebsd)
4073         add_cppflags -D_BSD_SOURCE
4074         ;;
4075     gnu)
4076         ;;
4077     qnx)
4078         add_cppflags -D_QNX_SOURCE
4079         network_extralibs="-lsocket"
4080         ;;
4081     symbian)
4082         SLIBSUF=".dll"
4083         enable dos_paths
4084         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4085         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4086         add_ldflags -Wl,--target1-abs,--no-undefined \
4087                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4088                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4089         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4090                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4091                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4092         ;;
4093     osf1)
4094         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4095         ;;
4096     minix)
4097         ;;
4098     none)
4099         ;;
4100     *)
4101         die "Unknown OS '$target_os'."
4102         ;;
4103 esac
4104
4105 # determine libc flavour
4106
4107 probe_libc(){
4108     pfx=$1
4109     pfx_no_=${pfx%_}
4110     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4111     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4112         eval ${pfx}libc_type=uclibc
4113         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4114     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4115         eval ${pfx}libc_type=glibc
4116         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4117     # MinGW headers can be installed on Cygwin, so check for newlib first.
4118     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4119         eval ${pfx}libc_type=newlib
4120         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4121     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4122     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4123         eval ${pfx}libc_type=mingw64
4124         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4125         eval test \$${pfx_no_}cc_type = "gcc" &&
4126             add_${pfx}cppflags -D__printf__=__gnu_printf__
4127     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4128          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4129         eval ${pfx}libc_type=mingw32
4130         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4131             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4132             die "ERROR: MinGW32 runtime version must be >= 3.15."
4133         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4134         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4135             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4136         eval test \$${pfx_no_}cc_type = "gcc" &&
4137             add_${pfx}cppflags -D__printf__=__gnu_printf__
4138     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4139         eval ${pfx}libc_type=msvcrt
4140         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4141             if [ "$pfx" = host_ ]; then
4142                 add_host_cppflags -Dsnprintf=_snprintf
4143             else
4144                 add_compat strtod.o strtod=avpriv_strtod
4145                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4146                                              _snprintf=avpriv_snprintf  \
4147                                              vsnprintf=avpriv_vsnprintf
4148             fi
4149         fi
4150         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4151         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4152         # 0x601 by default unless something else is set by the user.
4153         # This can easily lead to us detecting functions only present
4154         # in such new versions and producing binaries requiring windows 7.0.
4155         # Therefore explicitly set the default to XP unless the user has
4156         # set something else on the command line.
4157         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4158         # family. For these cases, configure is free to use any functions
4159         # found in the SDK headers by default. (Alternatively, we could force
4160         # _WIN32_WINNT to 0x0602 in that case.)
4161         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4162             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4163 #ifdef WINAPI_FAMILY
4164 #include <winapifamily.h>
4165 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4166 #error not desktop
4167 #endif
4168 #endif
4169 EOF
4170         if [ "$pfx" = "" ]; then
4171             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4172         fi
4173     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4174         eval ${pfx}libc_type=klibc
4175     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4176         eval ${pfx}libc_type=bionic
4177     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4178         eval ${pfx}libc_type=solaris
4179         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4180     else
4181         eval ${pfx}libc_type=default
4182         add_${pfx}cppflags -D_DEFAULT_SOURCE
4183     fi
4184 }
4185
4186 probe_libc
4187 test -n "$libc_type" && enable libc_$libc_type
4188 probe_libc host_
4189 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4190
4191 # hacks for compiler/libc/os combinations
4192
4193 case $libc_type in
4194     bionic)
4195         add_compat strtod.o strtod=avpriv_strtod
4196         ;;
4197     glibc)
4198         if enabled tms470; then
4199             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4200             add_cppflags -D__USER_LABEL_PREFIX__=
4201             add_cppflags -D__builtin_memset=memset
4202             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4203             add_cflags   -pds=48    # incompatible redefinition of macro
4204         elif enabled ccc; then
4205             add_ldflags -Wl,-z,now  # calls to libots crash without this
4206         fi
4207         ;;
4208 esac
4209
4210 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4211     add_cppflags '-I\$(SRC_PATH)/compat/float'
4212
4213 esc(){
4214     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4215 }
4216
4217 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4218
4219 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4220
4221 set_default $PATHS_LIST
4222 set_default nm
4223
4224 # we need to build at least one lib type
4225 if ! enabled_any static shared; then
4226     cat <<EOF
4227 At least one library type must be built.
4228 Specify --enable-static to build the static libraries or --enable-shared to
4229 build the shared libraries as well. To only build the shared libraries specify
4230 --disable-static in addition to --enable-shared.
4231 EOF
4232     exit 1
4233 fi
4234
4235 disabled optimizations || check_cflags -fomit-frame-pointer
4236
4237 enable_weak_pic() {
4238     disabled pic && return
4239     enable pic
4240     add_cppflags -DPIC
4241     case "$target_os" in
4242     mingw*|cygwin*)
4243         ;;
4244     *)
4245         add_cflags -fPIC
4246         ;;
4247     esac
4248     add_asflags  -fPIC
4249 }
4250
4251 enabled pic && enable_weak_pic
4252
4253 check_cc <<EOF || die "Symbol mangling check failed."
4254 int ff_extern;
4255 EOF
4256 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4257 extern_prefix=${sym%%ff_extern*}
4258
4259 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4260
4261 _restrict=
4262 for restrict_keyword in restrict __restrict__ __restrict; do
4263     check_cc <<EOF && _restrict=$restrict_keyword && break
4264 void foo(char * $restrict_keyword p);
4265 EOF
4266 done
4267
4268 check_cc <<EOF && enable pragma_deprecated
4269 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4270 EOF
4271
4272 check_cc <<EOF && enable attribute_packed
4273 struct { int x; } __attribute__((packed)) x;
4274 EOF
4275
4276 check_cc <<EOF && enable attribute_may_alias
4277 union { int x; } __attribute__((may_alias)) x;
4278 EOF
4279
4280 check_cc <<EOF || die "endian test failed"
4281 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4282 EOF
4283 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4284
4285 check_gas() {
4286     log "check_gas using '$as' as AS"
4287     # :vararg is used on aarch64, arm and ppc altivec
4288     check_as <<EOF || return 1
4289 .macro m n, y:vararg=0
4290 \n: .int \y
4291 .endm
4292 m x
4293 EOF
4294     # .altmacro is only used in arm asm
4295     ! enabled arm || check_as <<EOF || return 1
4296 .altmacro
4297 EOF
4298     enable gnu_as
4299     return 0
4300 }
4301
4302 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4303     nogas=:
4304     enabled_any arm aarch64 && nogas=die
4305     enabled_all ppc altivec && nogas=warn
4306     as_noop=-v
4307
4308     case $as_type in
4309         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4310         gcc)  gaspp_as_type=gas ;;
4311         *)    gaspp_as_type=$as_type ;;
4312     esac
4313
4314     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4315
4316     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4317         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4318
4319     if ! check_gas ; then
4320         as=${gas:=$as}
4321         check_gas || \
4322             $nogas "GNU assembler not found, install/update gas-preprocessor"
4323     fi
4324
4325     check_as <<EOF && enable as_func
4326 .func test
4327 .endfunc
4328 EOF
4329 fi
4330
4331 check_inline_asm inline_asm_labels '"1:\n"'
4332
4333 if enabled aarch64; then
4334     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4335     # internal assembler in clang 3.3 does not support this instruction
4336     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4337     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4338
4339     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4340
4341 elif enabled alpha; then
4342
4343     check_cflags -mieee
4344
4345 elif enabled arm; then
4346
4347     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4348     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4349     enabled thumb && check_cflags -mthumb || check_cflags -marm
4350
4351     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4352         enable vfp_args
4353     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4354         enable vfp_args
4355     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4356         case "${cross_prefix:-$cc}" in
4357             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4358             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4359 __asm__ (".eabi_attribute 28, 1");
4360 int main(void) { return 0; }
4361 EOF
4362         esac
4363         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4364     fi
4365
4366     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4367     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4368     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4369     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4370     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4371     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4372
4373     [ $target_os = linux ] || [ $target_os = android ] ||
4374         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4375             $ARCH_EXT_LIST_ARM
4376
4377     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4378
4379     check_as <<EOF && enable as_arch_directive
4380 .arch armv7-a
4381 EOF
4382     check_as <<EOF && enable as_fpu_directive
4383 .fpu neon
4384 EOF
4385
4386     # llvm's integrated assembler supports .object_arch from llvm 3.5
4387     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4388         check_as <<EOF && enable as_object_arch
4389 .object_arch armv4
4390 EOF
4391
4392     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4393
4394 elif enabled mips; then
4395
4396     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4397
4398     # make sure that only an instruction set is enabled
4399     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4400
4401     if enabled mips64; then
4402         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4403             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4404                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4405     else
4406         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4407             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4408                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4409     fi
4410
4411 elif enabled parisc; then
4412
4413     if enabled gcc; then
4414         case $($cc -dumpversion) in
4415             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4416         esac
4417     fi
4418
4419 elif enabled ppc; then
4420
4421     enable local_aligned_8 local_aligned_16 local_aligned_32
4422
4423     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4424     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4425     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4426     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4427
4428     # AltiVec flags: The FSF version of GCC differs from the Apple version
4429     if enabled altivec; then
4430         check_cflags -maltivec -mabi=altivec &&
4431         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4432         check_cflags -faltivec
4433
4434         # check if our compiler supports Motorola AltiVec C API
4435         check_cc <<EOF || disable altivec
4436 $inc_altivec_h
4437 int main(void) {
4438     vector signed int v1 = (vector signed int) { 0 };
4439     vector signed int v2 = (vector signed int) { 1 };
4440     v1 = vec_add(v1, v2);
4441     return 0;
4442 }
4443 EOF
4444
4445         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4446     fi
4447
4448     if enabled vsx; then
4449         check_cflags -mvsx &&
4450         check_cc <<EOF || disable vsx
4451 $inc_altivec_h
4452 int main(void) {
4453     int v[4] = { 0 };
4454     vector signed int v1 = vec_vsx_ld(0, v);
4455     return 0;
4456 }
4457 EOF
4458     fi
4459
4460     if enabled power8; then
4461         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4462     fi
4463
4464 elif enabled x86; then
4465
4466     check_builtin rdtsc    intrin.h   "__rdtsc()"
4467     check_builtin mm_empty mmintrin.h "_mm_empty()"
4468
4469     enable local_aligned_8 local_aligned_16 local_aligned_32
4470
4471     # check whether EBP is available on x86
4472     # As 'i' is stored on the stack, this program will crash
4473     # if the base pointer is used to access it because the
4474     # base pointer is cleared in the inline assembly code.
4475     check_exec_crash <<EOF && enable ebp_available
4476 volatile int i=0;
4477 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4478 return i;
4479 EOF
4480
4481     # check whether EBX is available on x86
4482     check_inline_asm ebx_available '""::"b"(0)' &&
4483         check_inline_asm ebx_available '"":::"%ebx"'
4484
4485     # check whether xmm clobbers are supported
4486     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4487
4488     # check whether binutils is new enough to compile SSSE3/MMXEXT
4489     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4490     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4491
4492     probe_x86asm(){
4493         x86asmexe_probe=$1
4494         if check_cmd $x86asmexe_probe -v; then
4495             x86asmexe=$x86asmexe_probe
4496             x86asm_type=nasm
4497             x86asm_debug="-g -F dwarf"
4498             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4499         elif check_cmd $x86asmexe_probe --version; then
4500             x86asmexe=$x86asmexe_probe
4501             x86asm_type=yasm
4502             x86asm_debug="-g dwarf2"
4503             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4504         fi
4505     }
4506
4507     if ! disabled_any asm mmx x86asm; then
4508         for program in $x86asmexe nasm yasm; do
4509             probe_x86asm $program
4510             test -n "$x86asm_type" && break
4511         done
4512         X86ASMFLAGS="-f $objformat"
4513         enabled pic               && append X86ASMFLAGS "-DPIC"
4514         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4515         case "$objformat" in
4516             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4517         esac
4518
4519         check_x86asm "movbe ecx, [5]" && enable x86asm ||
4520             die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4521         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4522         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4523         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4524         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4525         check_x86asm "CPU amdnop"                      || disable cpunop
4526     fi
4527
4528     case "$cpu" in
4529         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4530             disable fast_clz
4531         ;;
4532     esac
4533
4534 fi
4535
4536 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4537
4538 check_ldflags -Wl,--as-needed
4539
4540 if ! disabled network; then
4541     check_func getaddrinfo $network_extralibs
4542     check_func inet_aton $network_extralibs
4543
4544     check_type netdb.h "struct addrinfo"
4545     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4546     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4547     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4548     check_type poll.h "struct pollfd"
4549     check_type netinet/sctp.h "struct sctp_event_subscribe"
4550     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4551     check_type netinet/in.h "struct sockaddr_in6"
4552     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4553     check_type "sys/types.h sys/socket.h" socklen_t
4554
4555     # Prefer arpa/inet.h over winsock2
4556     if check_header arpa/inet.h ; then
4557         check_func closesocket
4558     elif check_header winsock2.h ; then
4559         check_func_headers winsock2.h closesocket -lws2 &&
4560             network_extralibs="-lws2" ||
4561         { check_func_headers winsock2.h closesocket -lws2_32 &&
4562             network_extralibs="-lws2_32"; } || disable winsock2_h network
4563         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4564
4565         check_type ws2tcpip.h socklen_t
4566         check_type ws2tcpip.h "struct addrinfo"
4567         check_type ws2tcpip.h "struct group_source_req"
4568         check_type ws2tcpip.h "struct ip_mreq_source"
4569         check_type ws2tcpip.h "struct ipv6_mreq"
4570         check_type winsock2.h "struct pollfd"
4571         check_struct winsock2.h "struct sockaddr" sa_len
4572         check_type ws2tcpip.h "struct sockaddr_in6"
4573         check_type ws2tcpip.h "struct sockaddr_storage"
4574     else
4575         disable network
4576     fi
4577 fi
4578
4579 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4580 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4581 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4582 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4583
4584 case "$custom_allocator" in
4585     jemalloc)
4586         # jemalloc by default does not use a prefix
4587         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4588     ;;
4589     tcmalloc)
4590         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4591         malloc_prefix=tc_
4592     ;;
4593 esac
4594
4595 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4596 check_func  ${malloc_prefix}memalign            && enable memalign
4597 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4598
4599 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4600     { check_lib clock_gettime time.h clock_gettime ||
4601       check_lib clock_gettime time.h clock_gettime -lrt; }
4602
4603 check_func  fcntl
4604 check_func  fork
4605 check_func  gethrtime
4606 check_func  getopt
4607 check_func  getrusage
4608 check_func  gettimeofday
4609 check_func  gmtime_r
4610 check_func  isatty
4611 check_func  localtime_r
4612 check_func  mach_absolute_time
4613 check_func  mkstemp
4614 check_func  mmap
4615 check_func  mprotect
4616 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4617 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4618 check_func  sched_getaffinity
4619 check_func  setrlimit
4620 check_func  strerror_r
4621 check_func  sysconf
4622 check_func  sysctl
4623 check_func  usleep
4624
4625 check_func_headers io.h setmode
4626 check_func_headers stdlib.h getenv
4627
4628 check_func_headers windows.h GetProcessAffinityMask
4629 check_func_headers windows.h GetProcessTimes
4630 check_func_headers windows.h GetSystemTimeAsFileTime
4631 check_func_headers windows.h LoadLibrary
4632 check_func_headers windows.h MapViewOfFile
4633 check_func_headers windows.h SetConsoleTextAttribute
4634 check_func_headers windows.h Sleep
4635 check_func_headers windows.h VirtualAlloc
4636 check_struct windows.h "CONDITION_VARIABLE" Ptr
4637
4638 check_header d3d11.h
4639 check_header direct.h
4640 check_header dlfcn.h
4641 check_header dxva.h
4642 check_header dxva2api.h
4643 check_header io.h
4644 check_header mach/mach_time.h
4645 check_header malloc.h
4646 check_header poll.h
4647 check_header sys/mman.h
4648 check_header sys/param.h
4649 check_header sys/resource.h
4650 check_header sys/select.h
4651 check_header sys/time.h
4652 check_header sys/un.h
4653 check_header unistd.h
4654 check_header valgrind/valgrind.h
4655 check_header VideoDecodeAcceleration/VDADecoder.h
4656 check_header windows.h
4657
4658 # it seems there are versions of clang in some distros that try to use the
4659 # gcc headers, which explodes for stdatomic
4660 # so we also check that atomics actually work here
4661 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4662
4663 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4664 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4665 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4666
4667 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4668
4669 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4670 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4671 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4672
4673 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4674 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4675 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4676 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4677 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4678 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4679 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4680 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4681 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4682
4683 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4684
4685 if ! disabled w32threads && ! enabled pthreads; then
4686     check_lib w32threads "windows.h process.h" _beginthreadex
4687 fi
4688
4689 # check for some common methods of building with pthread support
4690 # do this before the optional library checks as some of them require pthreads
4691 if ! disabled pthreads && ! enabled w32threads; then
4692     if check_lib pthreads pthread.h pthread_join -pthread; then
4693         add_cflags -pthread
4694     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4695         add_cflags -pthreads
4696     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4697         :
4698     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4699         :
4700     elif check_func pthread_join; then
4701         enable pthreads
4702     fi
4703 fi
4704
4705 enabled pthreads &&
4706     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4707
4708 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4709 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4710
4711 # On some systems dynamic loading requires no extra linker flags
4712 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4713
4714 check_lib libm math.h sin -lm
4715
4716 atan2f_args=2
4717 ldexpf_args=2
4718 powf_args=2
4719
4720 for func in $MATH_FUNCS; do
4721     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4722 done
4723
4724 # these are off by default, so fail if requested and not available
4725 enabled avisynth          && require_header avisynth/avisynth_c.h
4726 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4727 enabled cuda              && require cuda cuda.h cuInit -lcuda
4728 enabled frei0r            && require_header frei0r.h
4729 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4730 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4731 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4732 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4733 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4734 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4735 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4736 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4737 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4738                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4739                                done || die "ERROR: libgsm not found"; }
4740 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4741 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4742 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4743 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4744 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4745 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4746 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4747 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4748 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4749 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4750 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4751                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4752 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4753 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4754 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4755 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4756 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4757 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4758 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4759 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4760 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4761 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4762 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4763 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4764                              { enabled libvpx_vp8_decoder &&
4765                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4766                                enabled libvpx_vp8_encoder &&
4767                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4768                                enabled libvpx_vp9_decoder &&
4769                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4770                                enabled libvpx_vp9_encoder &&
4771                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4772                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4773                                    die "libvpx enabled but no supported decoders/encoders found"
4774                              }
4775 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4776 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4777 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4778                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4779                              { check_cpp_condition x264.h "X264_MPEG2" &&
4780                                enable libx262; }
4781 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4782                              require_cpp_condition x265.h "X265_BUILD >= 57"
4783 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4784 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4785 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4786                                { ! enabled cross_compile &&
4787                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4788                                  add_ldflags -L/opt/vc/lib/ &&
4789                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4790                                die "ERROR: mmal not found" &&
4791                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4792 enabled omx               && require_header OMX_Core.h
4793 enabled omx_rpi           && { check_header OMX_Core.h ||
4794                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4795                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4796 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4797                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4798                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4799                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4800                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4801                                die "ERROR: openssl not found"; }
4802
4803 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4804
4805 if enabled nvenc; then
4806     require_header nvEncodeAPI.h
4807     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4808 fi
4809
4810 # SDL is "special" and adds some CFLAGS that should not pollute anything else.
4811 if enabled avplay; then
4812     CFLAGS_SAVE=$CFLAGS
4813     check_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent &&
4814     sdl_cflags=$pkg_cflags
4815     CFLAGS=$CFLAGS_SAVE
4816 fi
4817
4818 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4819 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4820
4821 check_header linux/fb.h
4822 check_header linux/videodev2.h
4823 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4824
4825 check_header AVFoundation/AVFoundation.h
4826
4827 check_header sys/videoio.h
4828
4829 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4830 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4831 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4832 # w32api 3.12 had it defined wrong
4833 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4834
4835 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4836 { check_header dev/bktr/ioctl_meteor.h &&
4837   check_header dev/bktr/ioctl_bt848.h; } ||
4838 { check_header machine/ioctl_meteor.h &&
4839   check_header machine/ioctl_bt848.h; } ||
4840 { check_header dev/video/meteor/ioctl_meteor.h &&
4841   check_header dev/video/bktr/ioctl_bt848.h; } ||
4842 check_header dev/ic/bt8xx.h
4843
4844 check_header sys/soundcard.h
4845 check_header soundcard.h
4846
4847 enabled_any alsa_indev alsa_outdev &&
4848     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4849
4850 enabled libjack &&
4851     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4852
4853 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4854
4855 if enabled libcdio; then
4856     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4857     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4858     die "ERROR: No usable libcdio/cdparanoia found"
4859 fi
4860
4861 if enabled libxcb; then
4862     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4863     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4864     disabled libxcb_shm ||
4865         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4866     disabled libxcb_xfixes ||
4867         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4868 fi
4869
4870 enabled dxva2 &&
4871     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
4872
4873 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4874
4875 enabled vaapi &&
4876     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4877     disable vaapi
4878
4879 enabled vaapi &&
4880     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4881
4882 enabled vaapi &&
4883     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4884
4885 enabled vdpau &&
4886     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4887     disable vdpau
4888
4889 enabled vdpau &&
4890     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4891
4892 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4893
4894 # add some useful compiler flags if supported
4895 check_cflags -Wdeclaration-after-statement
4896 check_cflags -Wall
4897 check_cflags -Wdisabled-optimization
4898 check_cflags -Wpointer-arith
4899 check_cflags -Wredundant-decls
4900 check_cflags -Wwrite-strings
4901 check_cflags -Wtype-limits
4902 check_cflags -Wundef
4903 check_cflags -Wmissing-prototypes
4904 check_cflags -Wstrict-prototypes
4905
4906 if enabled extra_warnings; then
4907     check_cflags -Wcast-qual
4908     check_cflags -Wextra
4909     check_cflags -Wpedantic
4910 fi
4911
4912 check_disable_warning(){
4913     warning_flag=-W${1#-Wno-}
4914     test_cflags $warning_flag && add_cflags $1
4915 }
4916
4917 check_disable_warning -Wno-parentheses
4918 check_disable_warning -Wno-switch
4919 check_disable_warning -Wno-format-zero-length
4920 check_disable_warning -Wno-pointer-sign
4921
4922 check_disable_warning_headers(){
4923     warning_flag=-W${1#-Wno-}
4924     test_cflags $warning_flag && add_cflags_headers $1
4925 }
4926
4927 check_disable_warning_headers -Wno-deprecated-declarations
4928 check_disable_warning_headers -Wno-unused-variable
4929
4930 check_objcflags -fobjc-arc && enable objc_arc
4931
4932 check_cc <<EOF && enable blocks_extension
4933 void (^block)(void);
4934 EOF
4935
4936 # add some linker flags
4937 check_ldflags -Wl,--warn-common
4938 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4939 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4940 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4941
4942 # add some strip flags
4943 # -wN '..@*' is more selective than -x, but not available everywhere.
4944 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4945
4946 enabled neon_clobber_test &&
4947     check_ldflags -Wl,--wrap,avcodec_open2              \
4948                   -Wl,--wrap,avcodec_decode_audio4      \
4949                   -Wl,--wrap,avcodec_decode_video2      \
4950                   -Wl,--wrap,avcodec_decode_subtitle2   \
4951                   -Wl,--wrap,avcodec_encode_audio2      \
4952                   -Wl,--wrap,avcodec_encode_video2      \
4953                   -Wl,--wrap,avcodec_encode_subtitle    \
4954                   -Wl,--wrap,avcodec_send_packet        \
4955                   -Wl,--wrap,avcodec_receive_packet     \
4956                   -Wl,--wrap,avcodec_send_frame         \
4957                   -Wl,--wrap,avcodec_receive_frame      \
4958                   -Wl,--wrap,avresample_convert ||
4959     disable neon_clobber_test
4960
4961 enabled xmm_clobber_test &&
4962     check_ldflags -Wl,--wrap,avcodec_open2              \
4963                   -Wl,--wrap,avcodec_decode_audio4      \
4964                   -Wl,--wrap,avcodec_decode_video2      \
4965                   -Wl,--wrap,avcodec_decode_subtitle2   \
4966                   -Wl,--wrap,avcodec_encode_audio2      \
4967                   -Wl,--wrap,avcodec_encode_video2      \
4968                   -Wl,--wrap,avcodec_encode_subtitle    \
4969                   -Wl,--wrap,avcodec_send_packet        \
4970                   -Wl,--wrap,avcodec_receive_packet     \
4971                   -Wl,--wrap,avcodec_send_frame         \
4972                   -Wl,--wrap,avcodec_receive_frame      \
4973                   -Wl,--wrap,avresample_convert         \
4974                   -Wl,--wrap,sws_scale ||
4975     disable xmm_clobber_test
4976
4977 check_ld <<EOF && enable proper_dce
4978 extern const int array[512];
4979 static inline int func(void) { return array[0]; }
4980 int main(void) { return 0; }
4981 EOF
4982
4983 if enabled proper_dce; then
4984     echo "X { local: *; };" > $TMPV
4985     if test_ldflags -Wl,${version_script},$TMPV; then
4986         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
4987         check_cc <<EOF && enable symver_asm_label
4988 void ff_foo(void) __asm__ ("av_foo@VERSION");
4989 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4990 EOF
4991         check_cc <<EOF && enable symver_gnu_asm
4992 __asm__(".symver ff_foo,av_foo@VERSION");
4993 void ff_foo(void) {}
4994 EOF
4995     fi
4996 fi
4997
4998 if [ -z "$optflags" ]; then
4999     if enabled small; then
5000         optflags=$cflags_size
5001     elif enabled optimizations; then
5002         optflags=$cflags_speed
5003     else
5004         optflags=$cflags_noopt
5005     fi
5006 fi
5007
5008 check_optflags(){
5009     check_cflags "$@"
5010     enabled lto && check_ldflags "$@"
5011 }
5012
5013 check_optflags $optflags
5014 check_optflags -fno-math-errno
5015 check_optflags -fno-signed-zeros
5016
5017 if enabled lto; then
5018     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5019     check_cflags  -flto
5020     check_ldflags -flto $cpuflags
5021 fi
5022
5023 if enabled icc; then
5024     # Just warnings, no remarks
5025     check_cflags -w1
5026     # -wd: Disable following warnings
5027     # 144, 167, 556: -Wno-pointer-sign
5028     # 1292: attribute "foo" ignored
5029     # 1419: external declaration in primary source file
5030     # 10006: ignoring unknown option -fno-signed-zeros
5031     # 10148: ignoring unknown option -Wno-parentheses
5032     # 10156: ignoring option '-W'; no argument required
5033     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
5034     # 11030: Warning unknown option --as-needed
5035     # 10156: ignoring option '-export'; no argument required
5036     check_ldflags -wd10156,11030
5037     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5038     enable ebp_available
5039     if enabled x86_32; then
5040         icc_version=$($cc -dumpversion)
5041         test ${icc_version%%.*} -ge 11 &&
5042             check_cflags -falign-stack=maintain-16-byte ||
5043             disable aligned_stack
5044     fi
5045 elif enabled ccc; then
5046     # disable some annoying warnings
5047     add_cflags -msg_disable bitnotint
5048     add_cflags -msg_disable mixfuncvoid
5049     add_cflags -msg_disable nonstandcast
5050     add_cflags -msg_disable unsupieee
5051 elif enabled gcc; then
5052     check_optflags -fno-tree-vectorize
5053     check_cflags -Werror=implicit-function-declaration
5054     check_cflags -Werror=missing-prototypes
5055     check_cflags -Werror=return-type
5056     check_cflags -Werror=declaration-after-statement
5057     check_cflags -Werror=vla
5058     check_cflags -Werror=format-security
5059     check_cflags -fdiagnostics-color=auto
5060     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5061 elif enabled llvm_gcc; then
5062     check_cflags -mllvm -stack-alignment=16
5063 elif enabled clang; then
5064     check_cflags -mllvm -stack-alignment=16
5065     check_cflags -Qunused-arguments
5066     check_cflags -Werror=implicit-function-declaration
5067     check_cflags -Werror=missing-prototypes
5068     check_cflags -Werror=return-type
5069 elif enabled cparser; then
5070     add_cflags -Wno-missing-variable-declarations
5071     add_cflags -Wno-empty-statement
5072 elif enabled armcc; then
5073     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5074     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5075     # 2523: use of inline assembly is deprecated
5076     add_cflags -W${armcc_opt},--diag_suppress=2523
5077     add_cflags -W${armcc_opt},--diag_suppress=1207
5078     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5079     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5080     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5081     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5082 elif enabled tms470; then
5083     add_cflags -pds=824 -pds=837
5084     disable inline_asm
5085 elif enabled pathscale; then
5086     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5087     disable inline_asm
5088 elif enabled_any msvc icl; then
5089     enabled x86_32 && disable aligned_stack
5090     enabled_all x86_32 debug && add_cflags -Oy-
5091     enabled debug && add_ldflags -debug
5092     enable pragma_deprecated
5093     if enabled icl; then
5094         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5095         # (correctly) on icl 13.x.
5096         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5097             add_cflags -Qansi-alias
5098         # icl will pass the inline asm tests but inline asm is currently
5099         # not supported (build will fail)
5100         disable inline_asm
5101     fi
5102     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5103     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5104     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5105     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5106     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5107     # MSVC 2013 and newer can handle it fine.
5108     # If this declspec fails, force including stdlib.h before the restrict redefinition
5109     # happens in config.h.
5110     if [ $_restrict != restrict ]; then
5111         check_cc <<EOF || add_cflags -FIstdlib.h
5112 __declspec($_restrict) void* foo(int);
5113 EOF
5114     fi
5115 fi
5116
5117 for pfx in "" host_; do
5118     varname=${pfx%_}cc_type
5119     eval "type=\$$varname"
5120     if [ "$type" = "msvc" ]; then
5121         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5122 static inline int foo(int a) { return a; }
5123 EOF
5124     fi
5125 done
5126
5127 case $as_type in
5128     clang)
5129         add_asflags -Qunused-arguments
5130     ;;
5131 esac
5132
5133 case $ld_type in
5134     clang)
5135         check_ldflags -Qunused-arguments
5136     ;;
5137 esac
5138
5139 case $target_os in
5140     osf1)
5141         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5142     ;;
5143 esac
5144
5145 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5146
5147 check_deps $CONFIG_LIST       \
5148            $CONFIG_EXTRA      \
5149            $HAVE_LIST         \
5150            $ALL_COMPONENTS    \
5151
5152 flatten_extralibs(){
5153     unset nested_entries
5154     list_name=$1
5155     eval list=\$${1}
5156     for entry in $list; do
5157         entry_copy=$entry
5158         resolve entry_copy
5159         append nested_entries $(filter '*_extralibs' $entry_copy)
5160         flat_entries=$(filter_out '*_extralibs' $entry_copy)
5161         eval $entry="\$flat_entries"
5162     done
5163     append $list_name "$nested_entries"
5164
5165     resolve nested_entries
5166     if test -n "$(filter '*_extralibs' $nested_entries)"; then
5167         flatten_extralibs $list_name
5168     fi
5169 }
5170
5171 for linkunit in $LIBRARY_LIST; do
5172     unset current_extralibs
5173     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
5174     for comp in ${components}; do
5175         enabled $comp || continue
5176         comp_extralibs="${comp}_extralibs"
5177         append current_extralibs $comp_extralibs
5178     done
5179     eval prepend ${linkunit}_extralibs $current_extralibs
5180 done
5181
5182 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5183     flatten_extralibs ${linkunit}_extralibs
5184     unique  ${linkunit}_extralibs
5185     resolve ${linkunit}_extralibs
5186     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
5187 done
5188
5189 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5190
5191 for thread in $THREADS_LIST; do
5192     if enabled $thread; then
5193         test -n "$thread_type" &&
5194             die "ERROR: Only one thread type must be selected." ||
5195             thread_type="$thread"
5196     fi
5197 done
5198
5199 if disabled stdatomic_h; then
5200     if enabled atomics_gcc; then
5201         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
5202     elif enabled atomics_win32; then
5203         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
5204     elif enabled atomics_suncc; then
5205         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
5206     elif enabled pthreads; then
5207         add_compat atomics/pthread/stdatomic.o
5208         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
5209     else
5210         enabled threads && die "Threading is enabled, but no atomics are available"
5211         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
5212     fi
5213 fi
5214
5215 enabled zlib && add_cppflags -DZLIB_CONST
5216
5217 # conditional library dependencies, in linking order
5218 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5219 enabled_any asyncts_filter resample_filter &&
5220                            prepend avfilter_deps "avresample"
5221 enabled scale_filter    && prepend avfilter_deps "swscale"
5222
5223 enabled opus_decoder    && prepend avcodec_deps "avresample"
5224
5225 expand_deps(){
5226     lib_deps=${1}_deps
5227     eval "deps=\$$lib_deps"
5228     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5229     unique $lib_deps
5230 }
5231
5232 map 'expand_deps $v' $LIBRARY_LIST
5233
5234 if test "$quiet" != "yes"; then
5235
5236 echo "install prefix            $prefix"
5237 echo "source path               $source_path"
5238 echo "C compiler                $cc"
5239 echo "C library                 $libc_type"
5240 if test "$host_cc" != "$cc"; then
5241     echo "host C compiler           $host_cc"
5242     echo "host C library            $host_libc_type"
5243 fi
5244 echo "ARCH                      $arch ($cpu)"
5245 if test "$extra_version" != ""; then
5246     echo "version string suffix     $extra_version"
5247 fi
5248 echo "big-endian                ${bigendian-no}"
5249 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5250 if enabled x86; then
5251     echo "standalone assembly       ${x86asm-no}"
5252     echo "x86 assembler             ${x86asmexe}"
5253     echo "MMX enabled               ${mmx-no}"
5254     echo "MMXEXT enabled            ${mmxext-no}"
5255     echo "3DNow! enabled            ${amd3dnow-no}"
5256     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5257     echo "SSE enabled               ${sse-no}"
5258     echo "SSSE3 enabled             ${ssse3-no}"
5259     echo "AVX enabled               ${avx-no}"
5260     echo "XOP enabled               ${xop-no}"
5261     echo "FMA3 enabled              ${fma3-no}"
5262     echo "FMA4 enabled              ${fma4-no}"
5263     echo "i686 features enabled     ${i686-no}"
5264     echo "CMOV is fast              ${fast_cmov-no}"
5265     echo "EBX available             ${ebx_available-no}"
5266     echo "EBP available             ${ebp_available-no}"
5267 fi
5268 if enabled aarch64; then
5269     echo "NEON enabled              ${neon-no}"
5270     echo "VFP enabled               ${vfp-no}"
5271 fi
5272 if enabled arm; then
5273     echo "ARMv5TE enabled           ${armv5te-no}"
5274     echo "ARMv6 enabled             ${armv6-no}"
5275     echo "ARMv6T2 enabled           ${armv6t2-no}"
5276     echo "VFP enabled               ${vfp-no}"
5277     echo "NEON enabled              ${neon-no}"
5278 fi
5279 if enabled ppc; then
5280     echo "AltiVec enabled           ${altivec-no}"
5281     echo "VSX enabled               ${vsx-no}"
5282     echo "POWER8 enabled            ${power8-no}"
5283     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5284     echo "dcbzl available           ${dcbzl-no}"
5285 fi
5286 echo "debug symbols             ${debug-no}"
5287 echo "optimize for size         ${small-no}"
5288 echo "optimizations             ${optimizations-no}"
5289 echo "static                    ${static-no}"
5290 echo "shared                    ${shared-no}"
5291 echo "network support           ${network-no}"
5292 echo "threading support         ${thread_type-no}"
5293 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5294 test -n "$random_seed" &&
5295     echo "random seed               ${random_seed}"
5296 echo
5297
5298 echo "External libraries:"
5299 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5300 echo
5301 echo "External libraries providing hardware acceleration:"
5302 print_enabled '' $HWACCEL_LIBRARY_LIST | print_3_columns
5303 echo
5304
5305 echo "Libraries:"
5306 print_enabled '' $LIBRARY_LIST | print_3_columns
5307 echo
5308
5309 echo "Programs:"
5310 print_enabled '' $PROGRAM_LIST | print_3_columns
5311 echo
5312
5313 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5314     echo "Enabled ${type}s:"
5315     eval list=\$$(toupper $type)_LIST
5316     print_enabled '_*' $list | print_3_columns
5317     echo
5318 done
5319
5320 if test -n "$ignore_tests"; then
5321     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
5322     echo "Ignored FATE tests:"
5323     echo $ignore_tests | print_3_columns
5324     echo
5325 fi
5326
5327 license="LGPL version 2.1 or later"
5328 if enabled nonfree; then
5329     license="nonfree and unredistributable"
5330 elif enabled gplv3; then
5331     license="GPL version 3 or later"
5332 elif enabled lgplv3; then
5333     license="LGPL version 3 or later"
5334 elif enabled gpl; then
5335     license="GPL version 2 or later"
5336 fi
5337
5338 echo "License: $license"
5339
5340 echo "Creating configuration files ..."
5341
5342 fi # test "$quiet" != "yes"
5343
5344 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5345
5346 config_files="$TMPH avbuild/config.mak"
5347
5348 cat > avbuild/config.mak <<EOF
5349 # Automatically generated by configure - do not modify!
5350 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
5351 prefix=$prefix
5352 LIBDIR=\$(DESTDIR)$libdir
5353 SHLIBDIR=\$(DESTDIR)$shlibdir
5354 INCDIR=\$(DESTDIR)$incdir
5355 BINDIR=\$(DESTDIR)$bindir
5356 DATADIR=\$(DESTDIR)$datadir
5357 DOCDIR=\$(DESTDIR)$docdir
5358 MANDIR=\$(DESTDIR)$mandir
5359 SRC_PATH=$source_path
5360 CC_IDENT=$cc_ident
5361 ARCH=$arch
5362 INTRINSICS=$intrinsics
5363 CC=$cc
5364 AS=$as
5365 OBJCC=$objcc
5366 LD=$ld
5367 DEPCC=$dep_cc
5368 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5369 DEPAS=$as
5370 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5371 X86ASM=$x86asmexe
5372 DEPX86ASM=$x86asmexe
5373 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
5374 AR=$ar
5375 ARFLAGS=$arflags
5376 AR_O=$ar_o
5377 RANLIB=$ranlib
5378 STRIP=$strip
5379 LN_S=$ln_s
5380 CPPFLAGS=$CPPFLAGS
5381 CFLAGS=$CFLAGS
5382 OBJCFLAGS=$OBJCFLAGS
5383 ASFLAGS=$ASFLAGS
5384 AS_C=$AS_C
5385 AS_O=$AS_O
5386 OBJCC_C=$OBJCC_C
5387 OBJCC_E=$OBJCC_E
5388 OBJCC_O=$OBJCC_O
5389 CC_C=$CC_C
5390 CC_E=$CC_E
5391 CC_O=$CC_O
5392 X86ASM_O=$X86ASM_O
5393 LD_O=$LD_O
5394 LD_LIB=$LD_LIB
5395 LD_PATH=$LD_PATH
5396 DLLTOOL=$dlltool
5397 LDFLAGS=$LDFLAGS
5398 LDEXEFLAGS=$LDEXEFLAGS
5399 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5400 STRIPFLAGS=$STRIPFLAGS
5401 X86ASMFLAGS=$X86ASMFLAGS
5402 LIBPREF=$LIBPREF
5403 LIBSUF=$LIBSUF
5404 LIBNAME=$LIBNAME
5405 SLIBPREF=$SLIBPREF
5406 SLIBSUF=$SLIBSUF
5407 EXESUF=$EXESUF
5408 EXTRA_VERSION=$extra_version
5409 CCDEP=$CCDEP
5410 CCDEP_FLAGS=$CCDEP_FLAGS
5411 ASDEP=$ASDEP
5412 ASDEP_FLAGS=$ASDEP_FLAGS
5413 X86ASMDEP=$X86ASMDEP
5414 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
5415 CC_DEPFLAGS=$CC_DEPFLAGS
5416 AS_DEPFLAGS=$AS_DEPFLAGS
5417 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
5418 HOSTCC=$host_cc
5419 HOSTLD=$host_ld
5420 HOSTCFLAGS=$host_cflags
5421 HOSTCPPFLAGS=$host_cppflags
5422 HOSTEXESUF=$HOSTEXESUF
5423 HOSTLDFLAGS=$host_ldflags
5424 HOSTEXTRALIBS=$host_extralibs
5425 DEPHOSTCC=$host_cc
5426 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5427 HOSTCCDEP=$HOSTCCDEP
5428 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5429 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5430 HOSTCC_C=$HOSTCC_C
5431 HOSTCC_O=$HOSTCC_O
5432 HOSTLD_O=$HOSTLD_O
5433 TARGET_EXEC=$target_exec $target_exec_args
5434 TARGET_PATH=$target_path
5435 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5436 CFLAGS-avplay=$sdl_cflags
5437 CFLAGS_HEADERS=$CFLAGS_HEADERS
5438 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5439 EXTRALIBS=$extralibs
5440 COMPAT_OBJS=$compat_objs
5441 INSTALL=install
5442 LIBTARGET=${LIBTARGET}
5443 SLIBNAME=${SLIBNAME}
5444 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5445 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5446 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5447 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5448 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5449 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5450 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5451 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5452 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
5453 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
5454 IGNORE_TESTS=$ignore_tests
5455 EOF
5456
5457 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> avbuild/config.mak' $LIBRARY_LIST
5458
5459 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5460     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> avbuild/config.mak
5461 done
5462
5463 cat > $TMPH <<EOF
5464 /* Automatically generated by configure - do not modify! */
5465 #ifndef LIBAV_CONFIG_H
5466 #define LIBAV_CONFIG_H
5467 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
5468 #define LIBAV_LICENSE "$(c_escape $license)"
5469 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5470 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5471 #define restrict $_restrict
5472 #define EXTERN_PREFIX "${extern_prefix}"
5473 #define EXTERN_ASM ${extern_prefix}
5474 #define SLIBSUF "$SLIBSUF"
5475 EOF
5476
5477 test -n "$malloc_prefix" &&
5478     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5479
5480 if enabled x86asm; then
5481     append config_files $TMPASM
5482     printf '' >$TMPASM
5483 fi
5484
5485 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5486
5487 print_config ARCH_   "$config_files" $ARCH_LIST
5488 print_config HAVE_   "$config_files" $HAVE_LIST
5489 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5490                                      $CONFIG_EXTRA      \
5491                                      $ALL_COMPONENTS    \
5492
5493 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
5494
5495 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5496 cp_if_changed $TMPH config.h
5497 touch avbuild/.config
5498
5499 enabled x86asm && cp_if_changed $TMPASM config.asm
5500
5501 cat > $TMPH <<EOF
5502 /* Generated by ffconf */
5503 #ifndef AVUTIL_AVCONFIG_H
5504 #define AVUTIL_AVCONFIG_H
5505 EOF
5506
5507 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5508
5509 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5510
5511 cp_if_changed $TMPH libavutil/avconfig.h
5512
5513 # generate the lists of enabled components
5514 print_enabled_components(){
5515     file=$1
5516     struct_name=$2
5517     name=$3
5518     shift 3
5519     echo "static const $struct_name * const $name[] = {" > $TMPH
5520     for c in $*; do
5521         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
5522     done
5523     echo "    NULL };" >> $TMPH
5524     cp_if_changed $TMPH $file
5525 }
5526
5527 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
5528 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
5529
5530 test -n "$WARNINGS" && printf "\n$WARNINGS"
5531
5532 # Settings for pkg-config files
5533
5534 cat > avbuild/config.sh <<EOF
5535 # Automatically generated by configure - do not modify!
5536 shared=$shared
5537 prefix=$prefix
5538 libdir=$libdir
5539 incdir=$incdir
5540 source_path=${source_path}
5541 LIBPREF=${LIBPREF}
5542 LIBSUF=${LIBSUF}
5543 extralibs_avutil="$avutil_extralibs"
5544 extralibs_avcodec="$avcodec_extralibs"
5545 extralibs_avformat="$avformat_extralibs"
5546 extralibs_avdevice="$avdevice_extralibs"
5547 extralibs_avfilter="$avfilter_extralibs"
5548 extralibs_avresample="$avresample_extralibs"
5549 extralibs_swscale="$swscale_extralibs"
5550 EOF
5551
5552 for lib in $LIBRARY_LIST; do
5553     lib_deps="$(eval echo \$${lib}_deps)"
5554     echo ${lib}_deps=\"$lib_deps\" >> avbuild/config.sh
5555 done