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
 114 Component options:
 115   --disable-doc            do not build documentation
 116   --disable-pod2man        do not build manual pages
 117   --disable-texi2html      do not build HTML documentation
 118   --disable-avdevice       disable libavdevice build
 119   --disable-avcodec        disable libavcodec build
 120   --disable-avformat       disable libavformat build
 121   --disable-avutil         disable libavutil build
 122   --disable-swscale        disable libswscale build
 123   --disable-avfilter       disable video filter support [no]
 124   --disable-avresample     disable libavresample build [no]
 125   --disable-pthreads       disable pthreads [auto]
 126   --disable-w32threads     disable Win32 threads [auto]
 127   --disable-network        disable network support [no]
 128   --disable-dct            disable DCT code
 129   --disable-error-resilience disable error resilience code
 130   --disable-lsp            disable LSP code
 131   --disable-lzo            disable LZO decoder code
 132   --disable-mdct           disable MDCT code
 133   --disable-rdft           disable RDFT code
 134   --disable-fft            disable FFT code
 135   --disable-faan           disable floating point AAN (I)DCT code
 136
 137 Individual component options:
 138   --disable-everything     disable all components listed below
 139   --disable-encoder=NAME   disable encoder NAME
 140   --enable-encoder=NAME    enable encoder NAME
 141   --disable-encoders       disable all encoders
 142   --disable-decoder=NAME   disable decoder NAME
 143   --enable-decoder=NAME    enable decoder NAME
 144   --disable-decoders       disable all decoders
 145   --disable-hwaccel=NAME   disable hwaccel NAME
 146   --enable-hwaccel=NAME    enable hwaccel NAME
 147   --disable-hwaccels       disable all hwaccels
 148   --disable-muxer=NAME     disable muxer NAME
 149   --enable-muxer=NAME      enable muxer NAME
 150   --disable-muxers         disable all muxers
 151   --disable-demuxer=NAME   disable demuxer NAME
 152   --enable-demuxer=NAME    enable demuxer NAME
 153   --disable-demuxers       disable all demuxers
 154   --enable-parser=NAME     enable parser NAME
 155   --disable-parser=NAME    disable parser NAME
 156   --disable-parsers        disable all parsers
 157   --enable-bsf=NAME        enable bitstream filter NAME
 158   --disable-bsf=NAME       disable bitstream filter NAME
 159   --disable-bsfs           disable all bitstream filters
 160   --enable-protocol=NAME   enable protocol NAME
 161   --disable-protocol=NAME  disable protocol NAME
 162   --disable-protocols      disable all protocols
 163   --enable-indev=NAME      enable input device NAME
 164   --disable-indev=NAME     disable input device NAME
 165   --disable-indevs         disable input devices
 166   --enable-outdev=NAME     enable output device NAME
 167   --disable-outdev=NAME    disable output device NAME
 168   --disable-outdevs        disable output devices
 169   --disable-devices        disable all devices
 170   --enable-filter=NAME     enable filter NAME
 171   --disable-filter=NAME    disable filter NAME
 172   --disable-filters        disable all filters
 173
 174 External library support:
 175
 176   Using any of the following switches will allow Libav to link to the
 177   corresponding external library. All the components depending on that library
 178   will become enabled, if all their other dependencies are met and they are not
 179   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 180   libwavpack and allow the libwavpack encoder to be built, unless it is
 181   specifically disabled with --disable-encoder=libwavpack.
 182
 183   Note that only the system libraries are auto-detected. All the other external
 184   libraries must be explicitly enabled.
 185
 186   Also note that the following help text describes the purpose of the libraries
 187   themselves, not all their features will necessarily be usable by Libav.
 188
 189   --enable-avisynth          video frameserver
 190   --enable-avxsynth          Linux version of AviSynth
 191   --enable-bzlib             bzip2 compression [autodetect]
 192   --enable-frei0r            video filtering plugins
 193   --enable-gnutls            crypto
 194   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
 195   --enable-libcdio           audio CD input
 196   --enable-libdc1394         IEEE 1394/Firewire camera input
 197   --enable-libdcadec         DCA audio decoding
 198   --enable-libfaac           AAC audio encoding
 199   --enable-libfdk-aac        AAC audio encoding/decoding
 200   --enable-libfontconfig     font configuration and management
 201   --enable-libfreetype       font rendering
 202   --enable-libgsm            GSM audio encoding/decoding
 203   --enable-libhdcd           HDCD decoding filter
 204   --enable-libilbc           ILBC audio encoding/decoding
 205   --enable-libjack           JACK audio sound server
 206   --enable-libkvazaar        HEVC video encoding
 207   --enable-libmp3lame        MP3 audio encoding
 208   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
 209   --enable-libopencore-amrwb AMR-WB audio decoding
 210   --enable-libopencv         computer vision
 211   --enable-libopenh264       H.264 video encoding/decoding
 212   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
 213   --enable-libopus           Opus audio encoding/decoding
 214   --enable-libpulse          Pulseaudio sound server
 215   --enable-librtmp           RTMP streaming
 216   --enable-libschroedinger   Dirac video encoding/decoding
 217   --enable-libsnappy         snappy compression
 218   --enable-libspeex          Speex audio encoding/decoding
 219   --enable-libtheora         Theora video encoding/decoding
 220   --enable-libtwolame        MP2 audio encoding
 221   --enable-libvo-aacenc      AAC audio encoding
 222   --enable-libvo-amrwbenc    AMR-WB audio encoding
 223   --enable-libvorbis         Vorbis audio encoding/decoding
 224   --enable-libvpx            VP* video encoding/decoding
 225   --enable-libwavpack        Wavpack audio encoding/decoding
 226   --enable-libwebp           WebP image encoding/decoding
 227   --enable-libx264           H.264 video encoding
 228   --enable-libx265           HEVC video encoding
 229   --enable-libxavs           Chinese AVS video encoding
 230   --enable-libxcb            X window system protocol communication
 231   --enable-libxcb-shm        X11 shm communication [auto]
 232   --enable-libxcb-xfixes     X11 mouse rendering [auto]
 233   --enable-libxvid           MPEG-4 ASP video encoding
 234   --enable-openssl           crypto
 235   --enable-zlib              compression [autodetect]
 236
 237   The following libraries provide various hardware acceleration features:
 238   --enable-cuda    Nvidia CUDA (dynamically linked)
 239   --enable-cuvid   Nvidia CUVID video decode acceleration
 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-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 287   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 288   --extra-version=STRING   version string suffix []
 289   --optflags=OPTFLAGS      override optimization-related compiler flags
 290   --enable-pic             build position-independent code
 291   --enable-thumb           compile for Thumb instruction set
 292   --enable-lto             use link-time optimization
 293   --env="ENV=override"     override the environment variables
 294
 295 Advanced options (experts only):
 296   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 297   --custom-allocator=NAME  use a supported custom allocator
 298   --disable-symver         disable symbol versioning
 299   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 300   --disable-safe-bitstream-reader
 301                            disable buffer boundary checking in bitreaders
 302                            (faster, but may crash)
 303   --enable-sram            allow use of on-chip SRAM
 304
 305 Optimization options (experts only):
 306   --disable-asm            disable all assembly optimizations
 307   --disable-altivec        disable AltiVec optimizations
 308   --disable-vsx            disable VSX optimizations
 309   --disable-power8         disable POWER8 optimizations
 310   --disable-amd3dnow       disable 3DNow! optimizations
 311   --disable-amd3dnowext    disable 3DNow! extended optimizations
 312   --disable-mmx            disable MMX optimizations
 313   --disable-mmxext         disable MMXEXT optimizations
 314   --disable-sse            disable SSE optimizations
 315   --disable-sse2           disable SSE2 optimizations
 316   --disable-sse3           disable SSE3 optimizations
 317   --disable-ssse3          disable SSSE3 optimizations
 318   --disable-sse4           disable SSE4 optimizations
 319   --disable-sse42          disable SSE4.2 optimizations
 320   --disable-avx            disable AVX optimizations
 321   --disable-xop            disable XOP optimizations
 322   --disable-fma3           disable FMA3 optimizations
 323   --disable-fma4           disable FMA4 optimizations
 324   --disable-avx2           disable AVX2 optimizations
 325   --disable-armv5te        disable armv5te optimizations
 326   --disable-armv6          disable armv6 optimizations
 327   --disable-armv6t2        disable armv6t2 optimizations
 328   --disable-vfp            disable VFP optimizations
 329   --disable-neon           disable NEON optimizations
 330   --disable-inline-asm     disable use of inline assembly
 331   --disable-x86asm         disable use of standalone x86 assembly
 332
 333 Developer options (useful when working on Libav itself):
 334   --disable-debug          disable debugging symbols
 335   --enable-debug=LEVEL     set the debug level [$debuglevel]
 336   --disable-optimizations  disable compiler optimizations
 337   --enable-extra-warnings  enable more compiler warnings
 338   --samples=PATH           location of test samples for FATE, if not set use
 339                            \$LIBAV_SAMPLES at make invocation time.
 340   --enable-neon-clobber-test check NEON registers for clobbering (should be
 341                            used only for debugging purposes)
 342   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 343                            should be used only for debugging purposes)
 344   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 345                            (only applies to --disable-optimizations builds)
 346   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 347                            in the name) of tests whose result is ignored
 348
 349 NOTE: Object files are built at the place where configure is launched.
 350 EOF
 351   exit 0
 352 }
 353
 354 quotes='""'
 355
 356 log(){
 357     echo "$@" >> $logfile
 358 }
 359
 360 log_file(){
 361     log BEGIN $1
 362     i=1
 363     while read line; do
 364         printf '%5s   %s\n' "${i}" "${line}"
 365         i=$(($i+1))
 366     done < $1 >> $logfile
 367     log END $1
 368 }
 369
 370 echolog(){
 371     log "$@"
 372     echo "$@"
 373 }
 374
 375 warn(){
 376     log "WARNING: $*"
 377     WARNINGS="${WARNINGS}WARNING: $*\n"
 378 }
 379
 380 die(){
 381     echolog "$@"
 382     cat <<EOF
 383
 384 If you think configure made a mistake, make sure you are using the latest
 385 version from Git.  If the latest version fails, report the problem to the
 386 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 387 EOF
 388     if disabled logging; then
 389         cat <<EOF
 390 Rerun configure with logging enabled (do not use --disable-logging), and
 391 include the log this produces with your report.
 392 EOF
 393     else
 394         cat <<EOF
 395 Include the log file "$logfile" produced by configure as this will help
 396 solving the problem.
 397 EOF
 398     fi
 399     exit 1
 400 }
 401
 402 # Avoid locale weirdness, besides we really just want to translate ASCII.
 403 toupper(){
 404     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 405 }
 406
 407 tolower(){
 408     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 409 }
 410
 411 c_escape(){
 412     echo "$*" | sed 's/["\\]/\\\0/g'
 413 }
 414
 415 sh_quote(){
 416     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 417     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 418     echo "$v"
 419 }
 420
 421 cleanws(){
 422     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 423 }
 424
 425 filter(){
 426     pat=$1
 427     shift
 428     for v; do
 429         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 430     done
 431 }
 432
 433 filter_out(){
 434     pat=$1
 435     shift
 436     for v; do
 437         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 438     done
 439 }
 440
 441 map(){
 442     m=$1
 443     shift
 444     for v; do eval $m; done
 445 }
 446
 447 add_suffix(){
 448     suffix=$1
 449     shift
 450     for v; do echo ${v}${suffix}; done
 451 }
 452
 453 set_all(){
 454     value=$1
 455     shift
 456     for var in $*; do
 457         eval $var=$value
 458     done
 459 }
 460
 461 set_weak(){
 462     value=$1
 463     shift
 464     for var; do
 465         eval : \${$var:=$value}
 466     done
 467 }
 468
 469 sanitize_var_name(){
 470     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 471 }
 472
 473 set_sanitized(){
 474     var=$1
 475     shift
 476     eval $(sanitize_var_name "$var")='$*'
 477 }
 478
 479 get_sanitized(){
 480     eval echo \$$(sanitize_var_name "$1")
 481 }
 482
 483 pushvar(){
 484     for pvar in $*; do
 485         eval level=\${${pvar}_level:=0}
 486         eval ${pvar}_${level}="\$$pvar"
 487         eval ${pvar}_level=$(($level+1))
 488     done
 489 }
 490
 491 popvar(){
 492     for pvar in $*; do
 493         eval level=\${${pvar}_level:-0}
 494         test $level = 0 && continue
 495         eval level=$(($level-1))
 496         eval $pvar="\${${pvar}_${level}}"
 497         eval ${pvar}_level=$level
 498         eval unset ${pvar}_${level}
 499     done
 500 }
 501
 502 enable(){
 503     set_all yes $*
 504 }
 505
 506 disable(){
 507     set_all no $*
 508 }
 509
 510 enable_weak(){
 511     set_weak yes $*
 512 }
 513
 514 disable_weak(){
 515     set_weak no $*
 516 }
 517
 518 enable_sanitized(){
 519     for var; do
 520         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 521     done
 522 }
 523
 524 disable_sanitized(){
 525     for var; do
 526         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 527     done
 528 }
 529
 530 do_enable_deep(){
 531     for var; do
 532         enabled $var && continue
 533         eval sel="\$${var}_select"
 534         eval sgs="\$${var}_suggest"
 535         pushvar var sgs
 536         enable_deep $sel
 537         popvar sgs
 538         enable_deep_weak $sgs
 539         popvar var
 540     done
 541 }
 542
 543 enable_deep(){
 544     do_enable_deep $*
 545     enable $*
 546 }
 547
 548 enable_deep_weak(){
 549     for var; do
 550         disabled $var && continue
 551         pushvar var
 552         do_enable_deep $var
 553         popvar var
 554         enable_weak $var
 555     done
 556 }
 557
 558 enabled(){
 559     test "${1#!}" = "$1" && op== || op=!=
 560     eval test "x\$${1#!}" $op "xyes"
 561 }
 562
 563 disabled(){
 564     test "${1#!}" = "$1" && op== || op=!=
 565     eval test "x\$${1#!}" $op "xno"
 566 }
 567
 568 enabled_all(){
 569     for opt; do
 570         enabled $opt || return 1
 571     done
 572 }
 573
 574 disabled_all(){
 575     for opt; do
 576         disabled $opt || return 1
 577     done
 578 }
 579
 580 enabled_any(){
 581     for opt; do
 582         enabled $opt && return 0
 583     done
 584 }
 585
 586 disabled_any(){
 587     for opt; do
 588         disabled $opt && return 0
 589     done
 590     return 1
 591 }
 592
 593 set_default(){
 594     for opt; do
 595         eval : \${$opt:=\$${opt}_default}
 596     done
 597 }
 598
 599 is_in(){
 600     value=$1
 601     shift
 602     for var in $*; do
 603         [ $var = $value ] && return 0
 604     done
 605     return 1
 606 }
 607
 608 check_deps(){
 609     for cfg; do
 610         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 611         disabled ${cfg}_checking && continue
 612         enable ${cfg}_checking
 613
 614         eval dep_all="\$${cfg}_deps"
 615         eval dep_any="\$${cfg}_deps_any"
 616         eval dep_con="\$${cfg}_conflict"
 617         eval dep_sel="\$${cfg}_select"
 618         eval dep_sgs="\$${cfg}_suggest"
 619         eval dep_ifa="\$${cfg}_if"
 620         eval dep_ifn="\$${cfg}_if_any"
 621
 622         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 623         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 624         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 625
 626         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 627         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 628         enabled_all  $dep_all || disable $cfg
 629         enabled_any  $dep_any || disable $cfg
 630         disabled_all $dep_con || disable $cfg
 631         disabled_any $dep_sel && disable $cfg
 632
 633         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 634
 635         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 636             # filter out library deps, these do not belong in extralibs
 637             is_in $dep $LIBRARY_LIST && continue
 638             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 639         done
 640
 641         disable ${cfg}_checking
 642     done
 643 }
 644
 645 print_config(){
 646     pfx=$1
 647     files=$2
 648     shift 2
 649     map 'eval echo "$v \${$v:-no}"' "$@" |
 650     awk "BEGIN { split(\"$files\", files) }
 651         {
 652             c = \"$pfx\" toupper(\$1);
 653             v = \$2;
 654             sub(/yes/, 1, v);
 655             sub(/no/,  0, v);
 656             for (f in files) {
 657                 file = files[f];
 658                 if (file ~ /\\.h\$/) {
 659                     printf(\"#define %s %d\\n\", c, v) >>file;
 660                 } else if (file ~ /\\.asm\$/) {
 661                     printf(\"%%define %s %d\\n\", c, v) >>file;
 662                 } else if (file ~ /\\.mak\$/) {
 663                     n = -v ? \"\" : \"!\";
 664                     printf(\"%s%s=yes\\n\", n, c) >>file;
 665                 }
 666             }
 667         }"
 668 }
 669
 670 print_enabled(){
 671     suf=$1
 672     shift
 673     for v; do
 674         enabled $v && printf "%s\n" ${v%$suf}
 675     done
 676 }
 677
 678 append(){
 679     var=$1
 680     shift
 681     eval "$var=\"\$$var $*\""
 682 }
 683
 684 prepend(){
 685     var=$1
 686     shift
 687     eval "$var=\"$* \$$var\""
 688 }
 689
 690 unique(){
 691     var=$1
 692     uniq_list=""
 693     for tok in $(eval echo \$$var); do
 694         uniq_list="$(filter_out $tok $uniq_list) $tok"
 695     done
 696     eval "$var=\"${uniq_list}\""
 697 }
 698
 699 resolve(){
 700     var=$1
 701     tmpvar=
 702     for entry in $(eval echo \$$var); do
 703         tmpvar="$tmpvar $(eval echo \$${entry})"
 704     done
 705     eval "$var=\"${tmpvar}\""
 706 }
 707
 708 add_cppflags(){
 709     append CPPFLAGS "$@"
 710 }
 711
 712 add_cflags(){
 713     append CFLAGS $($cflags_filter "$@")
 714 }
 715
 716 add_cflags_headers(){
 717     append CFLAGS_HEADERS $($cflags_filter "$@")
 718 }
 719
 720 add_asflags(){
 721     append ASFLAGS $($asflags_filter "$@")
 722 }
 723
 724 add_objcflags(){
 725     append OBJCFLAGS $($objcflags_filter "$@")
 726 }
 727
 728 add_ldflags(){
 729     append LDFLAGS $($ldflags_filter "$@")
 730 }
 731
 732 add_ldexeflags(){
 733     append LDEXEFLAGS $($ldflags_filter "$@")
 734 }
 735
 736 add_ldsoflags(){
 737     append LDSOFLAGS $($ldflags_filter "$@")
 738 }
 739
 740 add_stripflags(){
 741     append STRIPFLAGS "$@"
 742 }
 743
 744 add_extralibs(){
 745     prepend extralibs $($ldflags_filter "$@")
 746 }
 747
 748 add_host_cppflags(){
 749     append host_cppflags "$@"
 750 }
 751
 752 add_host_cflags(){
 753     append host_cflags $($host_cflags_filter "$@")
 754 }
 755
 756 add_host_ldflags(){
 757     append host_ldflags $($host_ldflags_filter "$@")
 758 }
 759
 760 add_compat(){
 761     append compat_objs $1
 762     shift
 763     map 'add_cppflags -D$v' "$@"
 764 }
 765
 766 check_cmd(){
 767     log "$@"
 768     "$@" >> $logfile 2>&1
 769 }
 770
 771 cc_o(){
 772     eval printf '%s\\n' $CC_O
 773 }
 774
 775 cc_e(){
 776     eval printf '%s\\n' $CC_E
 777 }
 778
 779 check_cc(){
 780     log check_cc "$@"
 781     cat > $TMPC
 782     log_file $TMPC
 783     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 784 }
 785
 786 check_objcc(){
 787     log check_objcc "$@"
 788     cat > $TMPC
 789     log_file $TMPC
 790     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
 791 }
 792
 793 check_cpp(){
 794     log check_cpp "$@"
 795     cat > $TMPC
 796     log_file $TMPC
 797     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 798 }
 799
 800 as_o(){
 801     eval printf '%s\\n' $AS_O
 802 }
 803
 804 check_as(){
 805     log check_as "$@"
 806     cat > $TMPS
 807     log_file $TMPS
 808     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 809 }
 810
 811 check_inline_asm(){
 812     log check_inline_asm "$@"
 813     name="$1"
 814     code="$2"
 815     shift 2
 816     disable $name
 817     check_cc "$@" <<EOF && enable $name
 818 void foo(void){ __asm__ volatile($code); }
 819 EOF
 820 }
 821
 822 check_insn(){
 823     log check_insn "$@"
 824     check_inline_asm ${1}_inline "\"$2\""
 825     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 826 }
 827
 828 check_x86asm(){
 829     log check_x86asm "$@"
 830     echo "$1" > $TMPS
 831     log_file $TMPS
 832     shift 1
 833     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
 834 }
 835
 836 ld_o(){
 837     eval printf '%s\\n' $LD_O
 838 }
 839
 840 check_ld(){
 841     log check_ld "$@"
 842     flags=$(filter_out '-l*' "$@")
 843     libs=$(filter '-l*' "$@")
 844     check_cc $($cflags_filter $flags) || return
 845     flags=$($ldflags_filter $flags)
 846     libs=$($ldflags_filter $libs)
 847     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 848 }
 849
 850 print_include(){
 851     hdr=$1
 852     test "${hdr%.h}" = "${hdr}" &&
 853         echo "#include $hdr"    ||
 854         echo "#include <$hdr>"
 855 }
 856
 857 check_code(){
 858     log check_code "$@"
 859     check=$1
 860     headers=$2
 861     code=$3
 862     shift 3
 863     {
 864         for hdr in $headers; do
 865             print_include $hdr
 866         done
 867         echo "int main(void) { $code; return 0; }"
 868     } | check_$check "$@"
 869 }
 870
 871 check_cppflags(){
 872     log check_cppflags "$@"
 873     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
 874 #include <stdlib.h>;
 875 EOF
 876 }
 877
 878 test_cflags(){
 879     log test_cflags "$@"
 880     set -- $($cflags_filter "$@")
 881     check_cc "$@" <<EOF
 882 int x;
 883 EOF
 884 }
 885
 886 check_cflags(){
 887     log check_cflags "$@"
 888     test_cflags "$@" && add_cflags "$@"
 889 }
 890
 891 test_objcflags(){
 892     log test_objcflags "$@"
 893     set -- $($objcflags_filter "$@")
 894     check_objcc "$@" <<EOF
 895 int x;
 896 EOF
 897 }
 898
 899 check_objcflags(){
 900     log check_objcflags "$@"
 901     test_objcflags "$@" && add_objcflags "$@"
 902 }
 903
 904 test_ldflags(){
 905     log test_ldflags "$@"
 906     check_ld "$@" <<EOF
 907 int main(void){ return 0; }
 908 EOF
 909 }
 910
 911 check_ldflags(){
 912     log check_ldflags "$@"
 913     test_ldflags "$@" && add_ldflags "$@"
 914 }
 915
 916 test_stripflags(){
 917     log test_stripflags "$@"
 918     # call check_cc to get a fresh TMPO
 919     check_cc <<EOF
 920 int main(void) { return 0; }
 921 EOF
 922     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 923 }
 924
 925 check_stripflags(){
 926     log check_stripflags "$@"
 927     test_stripflags "$@" && add_stripflags "$@"
 928 }
 929
 930 check_header(){
 931     log check_header "$@"
 932     header=$1
 933     shift
 934     disable_sanitized $header
 935     check_cpp "$@" <<EOF && enable_sanitized $header
 936 #include <$header>
 937 int x;
 938 EOF
 939 }
 940
 941 check_func(){
 942     log check_func "$@"
 943     func=$1
 944     shift
 945     disable $func
 946     check_ld "$@" <<EOF && enable $func
 947 extern int $func();
 948 int main(void){ $func(); }
 949 EOF
 950 }
 951
 952 check_mathfunc(){
 953     log check_mathfunc "$@"
 954     func=$1
 955     narg=$2
 956     shift 2
 957     test $narg = 2 && args="f, g" || args="f"
 958     disable $func
 959     check_ld "$@" <<EOF && enable $func
 960 #include <math.h>
 961 float foo(float f, float g) { return $func($args); }
 962 int main(void){ return 0; }
 963 EOF
 964 }
 965
 966 check_func_headers(){
 967     log check_func_headers "$@"
 968     headers=$1
 969     funcs=$2
 970     shift 2
 971     {
 972         for hdr in $headers; do
 973             print_include $hdr
 974         done
 975         for func in $funcs; do
 976             echo "long check_$func(void) { return (long) $func; }"
 977         done
 978         echo "int main(void) { return 0; }"
 979     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
 980 }
 981
 982 check_cpp_condition(){
 983     log check_cpp_condition "$@"
 984     header=$1
 985     condition=$2
 986     shift 2
 987     check_cpp "$@" <<EOF
 988 #include <$header>
 989 #if !($condition)
 990 #error "unsatisfied condition: $condition"
 991 #endif
 992 EOF
 993 }
 994
 995 test_cflags_cpp(){
 996     log test_cflags_cpp "$@"
 997     flags=$1
 998     condition=$2
 999     shift 2
1000     set -- $($cflags_filter "$flags")
1001     check_cpp "$@" <<EOF
1002 #if !($condition)
1003 #error "unsatisfied condition: $condition"
1004 #endif
1005 EOF
1006 }
1007
1008 check_lib(){
1009     log check_lib "$@"
1010     name="$1"
1011     headers="$2"
1012     funcs="$3"
1013     shift 3
1014     disable $name
1015     check_func_headers "$headers" "$funcs" "$@" &&
1016         enable $name && eval ${name}_extralibs="\$@"
1017 }
1018
1019 test_pkg_config(){
1020     log test_pkg_config "$@"
1021     name="$1"
1022     pkg_version="$2"
1023     pkg="${2%% *}"
1024     headers="$3"
1025     funcs="$4"
1026     shift 4
1027     disable $name
1028     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1029     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1030     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1031     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1032         enable $name &&
1033         set_sanitized "${name}_cflags"    $pkg_cflags &&
1034         set_sanitized "${name}_extralibs" $pkg_libs
1035 }
1036
1037 check_pkg_config(){
1038     log check_pkg_config "$@"
1039     name="$1"
1040     test_pkg_config "$@" &&
1041         eval add_cflags \$${name}_cflags
1042 }
1043
1044 check_exec(){
1045     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1046 }
1047
1048 check_exec_crash(){
1049     log check_exec_crash "$@"
1050     code=$(cat)
1051
1052     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1053     # are safe but may not be available everywhere.  Thus we use
1054     # raise(SIGTERM) instead.  The check is run in a subshell so we
1055     # can redirect the "Terminated" message from the shell.  SIGBUS
1056     # is not defined by standard C so it is used conditionally.
1057
1058     (check_exec "$@") >> $logfile 2>&1 <<EOF
1059 #include <signal.h>
1060 static void sighandler(int sig){
1061     raise(SIGTERM);
1062 }
1063 int foo(void){
1064     $code
1065 }
1066 int (*func_ptr)(void) = foo;
1067 int main(void){
1068     signal(SIGILL, sighandler);
1069     signal(SIGFPE, sighandler);
1070     signal(SIGSEGV, sighandler);
1071 #ifdef SIGBUS
1072     signal(SIGBUS, sighandler);
1073 #endif
1074     return func_ptr();
1075 }
1076 EOF
1077 }
1078
1079 check_type(){
1080     log check_type "$@"
1081     headers=$1
1082     type=$2
1083     shift 2
1084     disable_sanitized "$type"
1085     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1086 }
1087
1088 check_struct(){
1089     log check_struct "$@"
1090     headers=$1
1091     struct=$2
1092     member=$3
1093     shift 3
1094     disable_sanitized "${struct}_${member}"
1095     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1096         enable_sanitized "${struct}_${member}"
1097 }
1098
1099 check_builtin(){
1100     log check_builtin "$@"
1101     name=$1
1102     headers=$2
1103     builtin=$3
1104     shift 3
1105     disable "$name"
1106     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1107 }
1108
1109 check_compile_assert(){
1110     log check_compile_assert "$@"
1111     name=$1
1112     headers=$2
1113     condition=$3
1114     shift 3
1115     disable "$name"
1116     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1117 }
1118
1119 require(){
1120     log require "$@"
1121     name_version="$1"
1122     name="${1%% *}"
1123     headers="$2"
1124     func="$3"
1125     shift 3
1126     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1127 }
1128
1129 require_header(){
1130     log require "$@"
1131     header="$1"
1132     shift
1133     check_header "$header" "$@" || die "ERROR: $header not found"
1134 }
1135
1136 require_cpp_condition(){
1137     log require "$@"
1138     header="$1"
1139     condition="$2"
1140     shift 2
1141     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1142 }
1143
1144 require_pkg_config(){
1145     log require_pkg_config "$@"
1146     pkg_version="$2"
1147     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1148 }
1149
1150 hostcc_e(){
1151     eval printf '%s\\n' $HOSTCC_E
1152 }
1153
1154 hostcc_o(){
1155     eval printf '%s\\n' $HOSTCC_O
1156 }
1157
1158 check_host_cc(){
1159     log check_host_cc "$@"
1160     cat > $TMPC
1161     log_file $TMPC
1162     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1163 }
1164
1165 check_host_cpp(){
1166     log check_host_cpp "$@"
1167     cat > $TMPC
1168     log_file $TMPC
1169     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1170 }
1171
1172 check_host_cppflags(){
1173     log check_host_cppflags "$@"
1174     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1175 #include <stdlib.h>;
1176 EOF
1177 }
1178
1179 check_host_cflags(){
1180     log check_host_cflags "$@"
1181     set -- $($host_cflags_filter "$@")
1182     check_host_cc "$@" <<EOF && append host_cflags "$@"
1183 int x;
1184 EOF
1185 }
1186
1187 check_host_cpp_condition(){
1188     log check_host_cpp_condition "$@"
1189     header=$1
1190     condition=$2
1191     shift 2
1192     check_host_cpp "$@" <<EOF
1193 #include <$header>
1194 #if !($condition)
1195 #error "unsatisfied condition: $condition"
1196 #endif
1197 EOF
1198 }
1199
1200 apply(){
1201     file=$1
1202     shift
1203     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1204 }
1205
1206 cp_if_changed(){
1207     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1208     mkdir -p "$(dirname $2)"
1209     cp -f "$1" "$2"
1210 }
1211
1212 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1213 # system-dependent things.
1214
1215 AVCODEC_COMPONENTS="
1216     bsfs
1217     decoders
1218     encoders
1219     hwaccels
1220     parsers
1221 "
1222
1223 AVDEVICE_COMPONENTS="
1224     indevs
1225     outdevs
1226 "
1227 AVFILTER_COMPONENTS="
1228     filters
1229 "
1230 AVFORMAT_COMPONENTS="
1231     demuxers
1232     muxers
1233     protocols
1234 "
1235
1236 COMPONENT_LIST="
1237     $AVCODEC_COMPONENTS
1238     $AVDEVICE_COMPONENTS
1239     $AVFILTER_COMPONENTS
1240     $AVFORMAT_COMPONENTS
1241 "
1242
1243 EXAMPLE_LIST="
1244     decode_audio_example
1245     decode_video_example
1246     encode_audio_example
1247     encode_video_example
1248     filter_audio_example
1249     metadata_example
1250     output_example
1251     qsvdec_example
1252     transcode_aac_example
1253 "
1254
1255 # catchall list of things that require external libs to link
1256 EXTRALIBS_LIST="
1257     cpu_init
1258     cws2fws
1259 "
1260
1261 HWACCEL_LIBRARY_NONFREE_LIST="
1262     cuda
1263     cuvid
1264     libnpp
1265 "
1266 HWACCEL_LIBRARY_LIST="
1267     $HWACCEL_LIBRARY_NONFREE_LIST
1268     d3d11va
1269     dxva2
1270     libmfx
1271     mmal
1272     nvenc
1273     omx
1274     vaapi
1275     vda
1276     vdpau
1277 "
1278
1279 EXTERNAL_LIBRARY_GPL_LIST="
1280     libcdio
1281     libx264
1282     libx265
1283     libxavs
1284     libxvid
1285 "
1286
1287 EXTERNAL_LIBRARY_NONFREE_LIST="
1288     libfaac
1289     libfdk_aac
1290     openssl
1291 "
1292
1293 EXTERNAL_LIBRARY_VERSION3_LIST="
1294     libopencore_amrnb
1295     libopencore_amrwb
1296     libvo_aacenc
1297     libvo_amrwbenc
1298 "
1299
1300 EXTERNAL_LIBRARY_LIST="
1301     $EXTERNAL_LIBRARY_GPL_LIST
1302     $EXTERNAL_LIBRARY_NONFREE_LIST
1303     $EXTERNAL_LIBRARY_VERSION3_LIST
1304     avisynth
1305     avxsynth
1306     frei0r
1307     gnutls
1308     libbs2b
1309     libdc1394
1310     libdcadec
1311     libfontconfig
1312     libfreetype
1313     libgsm
1314     libhdcd
1315     libilbc
1316     libjack
1317     libkvazaar
1318     libmp3lame
1319     libopencv
1320     libopenh264
1321     libopenjpeg
1322     libopus
1323     libpulse
1324     librtmp
1325     libschroedinger
1326     libsnappy
1327     libspeex
1328     libtheora
1329     libtwolame
1330     libvorbis
1331     libvpx
1332     libwavpack
1333     libwebp
1334     libxcb
1335     libxcb_shm
1336     libxcb_xfixes
1337 "
1338
1339 SYSTEM_LIBRARY_LIST="
1340     bzlib
1341     zlib
1342 "
1343
1344 FEATURE_LIST="
1345     gray
1346     hardcoded_tables
1347     omx_rpi
1348     runtime_cpudetect
1349     safe_bitstream_reader
1350     shared
1351     small
1352     sram
1353     static
1354     swscale_alpha
1355 "
1356
1357 LIBRARY_LIST="
1358     avcodec
1359     avdevice
1360     avfilter
1361     avformat
1362     avresample
1363     avutil
1364     swscale
1365 "
1366
1367 LICENSE_LIST="
1368     gpl
1369     nonfree
1370     version3
1371 "
1372
1373 PROGRAM_LIST="
1374     avconv
1375     avplay
1376     avprobe
1377 "
1378
1379 SUBSYSTEM_LIST="
1380     dct
1381     doc
1382     error_resilience
1383     faan
1384     fft
1385     lsp
1386     lzo
1387     mdct
1388     network
1389     rdft
1390 "
1391
1392 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1393 CONFIG_LIST="
1394     $EXAMPLE_LIST
1395     $EXTERNAL_LIBRARY_LIST
1396     $HWACCEL_LIBRARY_LIST
1397     $FEATURE_LIST
1398     $LICENSE_LIST
1399     $LIBRARY_LIST
1400     $PROGRAM_LIST
1401     $SUBSYSTEM_LIST
1402     $SYSTEM_LIBRARY_LIST
1403     neon_clobber_test
1404     pic
1405     pod2man
1406     texi2html
1407     thumb
1408     valgrind_backtrace
1409     xmm_clobber_test
1410     $COMPONENT_LIST
1411 "
1412
1413 THREADS_LIST="
1414     pthreads
1415     w32threads
1416 "
1417
1418 ATOMICS_LIST="
1419     atomics_gcc
1420     atomics_suncc
1421     atomics_win32
1422 "
1423
1424 ARCH_LIST="
1425     aarch64
1426     alpha
1427     arm
1428     avr32
1429     avr32_ap
1430     avr32_uc
1431     bfin
1432     ia64
1433     m68k
1434     mips
1435     mips64
1436     parisc
1437     ppc
1438     ppc64
1439     s390
1440     sh4
1441     sparc
1442     sparc64
1443     tilegx
1444     tilepro
1445     tomi
1446     x86
1447     x86_32
1448     x86_64
1449 "
1450
1451 ARCH_EXT_LIST_ARM="
1452     armv5te
1453     armv6
1454     armv6t2
1455     armv8
1456     neon
1457     vfp
1458     vfpv3
1459 "
1460
1461 ARCH_EXT_LIST_X86_SIMD="
1462     amd3dnow
1463     amd3dnowext
1464     avx
1465     avx2
1466     fma3
1467     fma4
1468     mmx
1469     mmxext
1470     sse
1471     sse2
1472     sse3
1473     sse4
1474     sse42
1475     ssse3
1476     xop
1477 "
1478
1479 ARCH_EXT_LIST_PPC="
1480     altivec
1481     dcbzl
1482     ldbrx
1483     power8
1484     ppc4xx
1485     vsx
1486 "
1487
1488 ARCH_EXT_LIST_X86="
1489     $ARCH_EXT_LIST_X86_SIMD
1490     cpunop
1491     i686
1492 "
1493
1494 ARCH_EXT_LIST_MIPS="
1495     loongson
1496     mips32r1
1497     mips64r1
1498     mips32r2
1499     mips64r2
1500     mips32r6
1501     mips64r6
1502 "
1503
1504 ARCH_EXT_LIST="
1505     $ARCH_EXT_LIST_ARM
1506     $ARCH_EXT_LIST_MIPS
1507     $ARCH_EXT_LIST_PPC
1508     $ARCH_EXT_LIST_X86
1509     vis
1510 "
1511
1512 ARCH_FEATURES="
1513     aligned_stack
1514     fast_64bit
1515     fast_clz
1516     fast_cmov
1517     local_aligned_8
1518     local_aligned_16
1519     local_aligned_32
1520     simd_align_16
1521     simd_align_32
1522 "
1523
1524 BUILTIN_LIST="
1525     atomic_cas_ptr
1526     machine_rw_barrier
1527     MemoryBarrier
1528     mm_empty
1529     rdtsc
1530     sem_timedwait
1531     sync_val_compare_and_swap
1532 "
1533 HAVE_LIST_CMDLINE="
1534     inline_asm
1535     symver
1536     x86asm
1537 "
1538
1539 HAVE_LIST_PUB="
1540     bigendian
1541     fast_unaligned
1542 "
1543
1544 HEADERS_LIST="
1545     AVFoundation_AVFoundation_h
1546     arpa_inet_h
1547     cdio_paranoia_h
1548     cdio_paranoia_paranoia_h
1549     dispatch_dispatch_h
1550     dev_bktr_ioctl_bt848_h
1551     dev_bktr_ioctl_meteor_h
1552     dev_ic_bt8xx_h
1553     dev_video_bktr_ioctl_bt848_h
1554     dev_video_meteor_ioctl_meteor_h
1555     direct_h
1556     dxgidebug_h
1557     dxva_h
1558     io_h
1559     mach_mach_time_h
1560     machine_ioctl_bt848_h
1561     machine_ioctl_meteor_h
1562     malloc_h
1563     poll_h
1564     stdatomic_h
1565     sys_param_h
1566     sys_resource_h
1567     sys_select_h
1568     sys_soundcard_h
1569     sys_time_h
1570     sys_un_h
1571     sys_videoio_h
1572     unistd_h
1573     valgrind_valgrind_h
1574     windows_h
1575     winsock2_h
1576 "
1577
1578 INTRINSICS_LIST="
1579     intrinsics_neon
1580 "
1581
1582 MATH_FUNCS="
1583     atanf
1584     atan2f
1585     cbrtf
1586     cosf
1587     exp2
1588     exp2f
1589     expf
1590     isinf
1591     isnan
1592     ldexpf
1593     llrint
1594     llrintf
1595     log2
1596     log2f
1597     log10f
1598     lrint
1599     lrintf
1600     powf
1601     rint
1602     round
1603     roundf
1604     sinf
1605     trunc
1606     truncf
1607 "
1608
1609 SYSTEM_FUNCS="
1610     aligned_malloc
1611     clock_gettime
1612     closesocket
1613     CommandLineToArgvW
1614     CryptGenRandom
1615     fcntl
1616     getaddrinfo
1617     gethrtime
1618     getopt
1619     GetProcessAffinityMask
1620     GetProcessMemoryInfo
1621     GetProcessTimes
1622     getrusage
1623     GetSystemTimeAsFileTime
1624     gettimeofday
1625     gmtime_r
1626     inet_aton
1627     isatty
1628     localtime_r
1629     mach_absolute_time
1630     MapViewOfFile
1631     memalign
1632     mmap
1633     mprotect
1634     nanosleep
1635     posix_memalign
1636     sched_getaffinity
1637     SetConsoleTextAttribute
1638     setmode
1639     setrlimit
1640     Sleep
1641     strerror_r
1642     sysconf
1643     sysctl
1644     usleep
1645     VirtualAlloc
1646 "
1647
1648 TOOLCHAIN_FEATURES="
1649     as_arch_directive
1650     as_fpu_directive
1651     as_func
1652     as_object_arch
1653     asm_mod_q
1654     blocks_extension
1655     ebp_available
1656     ebx_available
1657     gnu_as
1658     ibm_asm
1659     inline_asm_labels
1660     pragma_deprecated
1661     symver_asm_label
1662     symver_gnu_asm
1663     vfp_args
1664     xform_asm
1665     xmm_clobbers
1666 "
1667
1668 TYPES_LIST="
1669     CONDITION_VARIABLE_Ptr
1670     CUVIDDECODECREATEINFO_bitDepthMinus8
1671     socklen_t
1672     struct_addrinfo
1673     struct_group_source_req
1674     struct_ip_mreq_source
1675     struct_ipv6_mreq
1676     struct_pollfd
1677     struct_rusage_ru_maxrss
1678     struct_sockaddr_in6
1679     struct_sockaddr_sa_len
1680     struct_sockaddr_storage
1681     struct_v4l2_frmivalenum_discrete
1682 "
1683
1684 HAVE_LIST="
1685     $ARCH_EXT_LIST
1686     $(add_suffix _external $ARCH_EXT_LIST)
1687     $(add_suffix _inline   $ARCH_EXT_LIST)
1688     $ARCH_FEATURES
1689     $BUILTIN_LIST
1690     $HAVE_LIST_CMDLINE
1691     $HAVE_LIST_PUB
1692     $HEADERS_LIST
1693     $INTRINSICS_LIST
1694     $MATH_FUNCS
1695     $SYSTEM_FUNCS
1696     $THREADS_LIST
1697     $TOOLCHAIN_FEATURES
1698     $TYPES_LIST
1699     dos_paths
1700     libc_msvcrt
1701     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1702     sdl
1703     section_data_rel_ro
1704     threads
1705     uwp
1706     vaapi_drm
1707     vaapi_x11
1708     vdpau_x11
1709 "
1710
1711 # options emitted with CONFIG_ prefix but not available on the command line
1712 CONFIG_EXTRA="
1713     aandcttables
1714     ac3dsp
1715     adts_header
1716     audio_frame_queue
1717     audiodsp
1718     blockdsp
1719     bswapdsp
1720     cabac
1721     cbs
1722     cbs_h264
1723     cbs_h265
1724     cbs_mpeg2
1725     dirac_parse
1726     dvprofile
1727     faandct
1728     faanidct
1729     fdctdsp
1730     flacdsp
1731     fmtconvert
1732     g722dsp
1733     gmp
1734     golomb
1735     gplv3
1736     h263dsp
1737     h264chroma
1738     h264dsp
1739     h264parse
1740     h264pred
1741     h264qpel
1742     hevcparse
1743     hpeldsp
1744     huffman
1745     huffyuvdsp
1746     huffyuvencdsp
1747     idctdsp
1748     iirfilter
1749     imdct15
1750     intrax8
1751     iso_media
1752     ividsp
1753     jpegtables
1754     lgplv3
1755     libx262
1756     libxcb_shape
1757     lpc
1758     lzf
1759     me_cmp
1760     mpeg_er
1761     mpegaudio
1762     mpegaudiodsp
1763     mpegaudioheader
1764     mpegvideo
1765     mpegvideoenc
1766     mss34dsp
1767     pixblockdsp
1768     qpeldsp
1769     qsv
1770     qsvdec
1771     qsvenc
1772     qsvvpp
1773     rangecoder
1774     riffdec
1775     riffenc
1776     rtpdec
1777     rtpenc_chain
1778     rv34dsp
1779     sinewin
1780     snappy
1781     srtp
1782     startcode
1783     texturedsp
1784     texturedspenc
1785     tpeldsp
1786     vaapi_encode
1787     vc1dsp
1788     videodsp
1789     vp3dsp
1790     vp56dsp
1791     vp8dsp
1792     wma_freqs
1793     wmv2dsp
1794 "
1795
1796 CMDLINE_SELECT="
1797     $ARCH_EXT_LIST
1798     $CONFIG_LIST
1799     $HAVE_LIST_CMDLINE
1800     $THREADS_LIST
1801     asm
1802     cross_compile
1803     debug
1804     extra_warnings
1805     logging
1806     lto
1807     optimizations
1808     rpath
1809 "
1810
1811 PATHS_LIST="
1812     bindir
1813     datadir
1814     docdir
1815     incdir
1816     libdir
1817     mandir
1818     prefix
1819     shlibdir
1820 "
1821
1822 CMDLINE_SET="
1823     $PATHS_LIST
1824     ar
1825     arch
1826     as
1827     cc
1828     objcc
1829     cpu
1830     cross_prefix
1831     custom_allocator
1832     dep_cc
1833     env
1834     extra_version
1835     host_cc
1836     host_cflags
1837     host_extralibs
1838     host_ld
1839     host_ldflags
1840     host_os
1841     ignore_tests
1842     ld
1843     logfile
1844     malloc_prefix
1845     nm
1846     optflags
1847     pkg_config
1848     pkg_config_flags
1849     samples
1850     sysinclude
1851     sysroot
1852     target_exec
1853     target_os
1854     target_path
1855     target_samples
1856     toolchain
1857     x86asmexe
1858 "
1859
1860 CMDLINE_APPEND="
1861     extra_cflags
1862     extra_objcflags
1863     host_cppflags
1864 "
1865
1866 # code dependency declarations
1867
1868 # architecture extensions
1869
1870 armv5te_deps="arm"
1871 armv6_deps="arm"
1872 armv6t2_deps="arm"
1873 armv8_deps="aarch64"
1874 neon_deps_any="aarch64 arm"
1875 intrinsics_neon_deps="neon"
1876 vfp_deps_any="aarch64 arm"
1877 vfpv3_deps="vfp"
1878
1879 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1880
1881 altivec_deps="ppc"
1882 dcbzl_deps="ppc"
1883 ldbrx_deps="ppc"
1884 ppc4xx_deps="ppc"
1885 vsx_deps="altivec"
1886 power8_deps="vsx"
1887
1888 loongson_deps="mips"
1889 mips32r1_deps="mips32"
1890 mips32r2_deps="mips32"
1891 mips32r6_deps="mips32"
1892 mips64r1_deps="mips64"
1893 mips64r2_deps="mips64"
1894 mips64r6_deps="mips64"
1895
1896 vis_deps="sparc"
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 x86"
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 cbs_h264_select="cbs golomb"
1952 cbs_h265_select="cbs golomb"
1953 cbs_mpeg2_select="cbs"
1954 dct_select="rdft"
1955 dirac_parse_select="golomb"
1956 error_resilience_select="me_cmp"
1957 faandct_deps="faan"
1958 faandct_select="fdctdsp"
1959 faanidct_deps="faan"
1960 faanidct_select="idctdsp"
1961 h264dsp_select="startcode"
1962 hevcparse_select="golomb"
1963 intrax8_select="blockdsp idctdsp"
1964 mdct_select="fft"
1965 rdft_select="fft"
1966 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1967 mpeg_er_select="error_resilience"
1968 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1969 mpegaudiodsp_select="dct"
1970 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1971 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1972 vc1dsp_select="h264chroma qpeldsp startcode"
1973
1974 # decoders / encoders
1975 aac_decoder_select="adts_header imdct15 mdct sinewin"
1976 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1977 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1978 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1979 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1980 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1981 adpcm_g722_decoder_select="g722dsp"
1982 adpcm_g722_encoder_select="g722dsp"
1983 aic_decoder_select="golomb idctdsp"
1984 alac_encoder_select="lpc"
1985 als_decoder_select="bswapdsp"
1986 amrnb_decoder_select="lsp"
1987 amrwb_decoder_select="lsp"
1988 amv_decoder_select="sp5x_decoder"
1989 ape_decoder_select="bswapdsp"
1990 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1991 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1992 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1993 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1994 atrac1_decoder_select="mdct sinewin"
1995 atrac3_decoder_select="mdct"
1996 atrac3p_decoder_select="mdct sinewin"
1997 bink_decoder_select="blockdsp hpeldsp"
1998 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1999 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2000 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2001 clearvideo_decoder_select="idctdsp"
2002 cllc_decoder_select="bswapdsp"
2003 comfortnoise_encoder_select="lpc"
2004 cook_decoder_select="audiodsp mdct sinewin"
2005 cscd_decoder_select="lzo"
2006 cscd_decoder_suggest="zlib"
2007 dca_decoder_select="fmtconvert mdct"
2008 dds_decoder_select="texturedsp"
2009 dnxhd_decoder_select="blockdsp idctdsp"
2010 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2011 dvvideo_decoder_select="dvprofile idctdsp"
2012 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2013 dxa_decoder_deps="zlib"
2014 dxv_decoder_select="lzf texturedsp"
2015 eac3_decoder_select="ac3_decoder"
2016 eac3_encoder_select="ac3_encoder"
2017 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2018 eatgq_decoder_select="aandcttables idctdsp"
2019 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2020 exr_decoder_deps="zlib"
2021 ffv1_decoder_select="rangecoder"
2022 ffv1_encoder_select="rangecoder"
2023 ffvhuff_decoder_select="huffyuv_decoder"
2024 ffvhuff_encoder_select="huffyuv_encoder"
2025 fic_decoder_select="golomb"
2026 flac_decoder_select="flacdsp"
2027 flac_encoder_select="bswapdsp flacdsp lpc"
2028 flashsv_decoder_deps="zlib"
2029 flashsv_encoder_deps="zlib"
2030 flashsv2_decoder_deps="zlib"
2031 flv_decoder_select="h263_decoder"
2032 flv_encoder_select="h263_encoder"
2033 fourxm_decoder_select="blockdsp bswapdsp"
2034 fraps_decoder_select="bswapdsp huffman"
2035 g2m_decoder_deps="zlib"
2036 g2m_decoder_select="blockdsp idctdsp jpegtables"
2037 h261_decoder_select="mpeg_er mpegvideo"
2038 h261_encoder_select="aandcttables mpegvideoenc"
2039 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2040 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2041 h263i_decoder_select="h263_decoder"
2042 h263p_encoder_select="h263_encoder"
2043 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2044 h264_decoder_suggest="error_resilience"
2045 hap_decoder_select="snappy texturedsp"
2046 hap_encoder_deps="libsnappy"
2047 hap_encoder_select="texturedspenc"
2048 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2049 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2050 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2051 iac_decoder_select="imc_decoder"
2052 imc_decoder_select="bswapdsp fft mdct sinewin"
2053 indeo3_decoder_select="hpeldsp"
2054 indeo4_decoder_select="ividsp"
2055 indeo5_decoder_select="ividsp"
2056 interplay_video_decoder_select="hpeldsp"
2057 jpegls_decoder_select="mjpeg_decoder"
2058 jv_decoder_select="blockdsp"
2059 lagarith_decoder_select="huffyuvdsp"
2060 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2061 magicyuv_decoder_select="huffyuvdsp"
2062 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2063 metasound_decoder_select="lsp mdct sinewin"
2064 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2065 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2066 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2067 mjpegb_decoder_select="mjpeg_decoder"
2068 mlp_decoder_select="mlp_parser"
2069 motionpixels_decoder_select="bswapdsp"
2070 mp1_decoder_select="mpegaudio"
2071 mp1float_decoder_select="mpegaudio"
2072 mp2_decoder_select="mpegaudio"
2073 mp2float_decoder_select="mpegaudio"
2074 mp3_decoder_select="mpegaudio"
2075 mp3adu_decoder_select="mpegaudio"
2076 mp3adufloat_decoder_select="mpegaudio"
2077 mp3float_decoder_select="mpegaudio"
2078 mp3on4_decoder_select="mpegaudio"
2079 mp3on4float_decoder_select="mpegaudio"
2080 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2081 mpc8_decoder_select="mpegaudiodsp"
2082 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2083 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2084 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2085 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2086 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2087 mpeg4_encoder_select="h263_encoder"
2088 msa1_decoder_select="mss34dsp"
2089 msmpeg4v1_decoder_select="h263_decoder"
2090 msmpeg4v2_decoder_select="h263_decoder"
2091 msmpeg4v2_encoder_select="h263_encoder"
2092 msmpeg4v3_decoder_select="h263_decoder"
2093 msmpeg4v3_encoder_select="h263_encoder"
2094 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2095 mts2_decoder_select="mss34dsp"
2096 mxpeg_decoder_select="mjpeg_decoder"
2097 nellymoser_decoder_select="mdct sinewin"
2098 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2099 nuv_decoder_select="idctdsp lzo"
2100 on2avc_decoder_select="mdct"
2101 opus_decoder_deps="avresample"
2102 opus_decoder_select="imdct15"
2103 png_decoder_deps="zlib"
2104 png_encoder_deps="zlib"
2105 png_encoder_select="huffyuvencdsp"
2106 prores_decoder_select="idctdsp"
2107 prores_encoder_select="fdctdsp"
2108 qcelp_decoder_select="lsp"
2109 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2110 ra_144_encoder_select="audio_frame_queue lpc"
2111 ralf_decoder_select="golomb"
2112 rscc_decoder_deps="zlib"
2113 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2114 rv10_encoder_select="h263_encoder"
2115 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2116 rv20_encoder_select="h263_encoder"
2117 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2118 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2119 screenpresso_decoder_deps="zlib"
2120 sipr_decoder_select="lsp"
2121 sp5x_decoder_select="mjpeg_decoder"
2122 svq1_decoder_select="hpeldsp"
2123 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2124 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2125 svq3_decoder_suggest="zlib"
2126 tak_decoder_select="audiodsp"
2127 tdsc_decoder_deps="zlib"
2128 tdsc_decoder_select="mjpeg_decoder"
2129 theora_decoder_select="vp3_decoder"
2130 thp_decoder_select="mjpeg_decoder"
2131 tiff_decoder_suggest="zlib"
2132 tiff_encoder_suggest="zlib"
2133 truehd_decoder_select="mlp_decoder"
2134 truemotion2_decoder_select="bswapdsp"
2135 truespeech_decoder_select="bswapdsp"
2136 tscc_decoder_deps="zlib"
2137 txd_decoder_select="texturedsp"
2138 twinvq_decoder_select="mdct lsp sinewin"
2139 utvideo_decoder_select="bswapdsp huffyuvdsp"
2140 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2141 vble_decoder_select="huffyuvdsp"
2142 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2143 vc1image_decoder_select="vc1_decoder"
2144 vorbis_decoder_select="mdct"
2145 vorbis_encoder_select="mdct"
2146 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2147 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2148 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2149 vp6a_decoder_select="vp6_decoder"
2150 vp6f_decoder_select="vp6_decoder"
2151 vp7_decoder_select="h264pred videodsp vp8dsp"
2152 vp8_decoder_select="h264pred videodsp vp8dsp"
2153 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2154 webp_decoder_select="vp8_decoder"
2155 wmapro_decoder_select="mdct sinewin wma_freqs"
2156 wmav1_decoder_select="mdct sinewin wma_freqs"
2157 wmav1_encoder_select="mdct sinewin wma_freqs"
2158 wmav2_decoder_select="mdct sinewin wma_freqs"
2159 wmav2_encoder_select="mdct sinewin wma_freqs"
2160 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2161 wmv1_decoder_select="h263_decoder"
2162 wmv1_encoder_select="h263_encoder"
2163 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2164 wmv2_encoder_select="h263_encoder wmv2dsp"
2165 wmv3_decoder_select="vc1_decoder"
2166 wmv3image_decoder_select="wmv3_decoder"
2167 zerocodec_decoder_deps="zlib"
2168 zlib_decoder_deps="zlib"
2169 zlib_encoder_deps="zlib"
2170 zmbv_decoder_deps="zlib"
2171 zmbv_encoder_deps="zlib"
2172
2173 # hardware accelerators
2174 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2175 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2176 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2177 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2178
2179 h263_vaapi_hwaccel_deps="vaapi"
2180 h263_vaapi_hwaccel_select="h263_decoder"
2181 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2182 h264_cuvid_hwaccel_select="h264_decoder"
2183 h264_d3d11va_hwaccel_deps="d3d11va"
2184 h264_d3d11va_hwaccel_select="h264_decoder"
2185 h264_d3d11va2_hwaccel_deps="d3d11va"
2186 h264_d3d11va2_hwaccel_select="h264_decoder"
2187 h264_dxva2_hwaccel_deps="dxva2"
2188 h264_dxva2_hwaccel_select="h264_decoder"
2189 h264_mmal_hwaccel_deps="mmal"
2190 h264_qsv_hwaccel_deps="libmfx"
2191 h264_vaapi_hwaccel_deps="vaapi"
2192 h264_vaapi_hwaccel_select="h264_decoder"
2193 h264_vda_hwaccel_deps="vda"
2194 h264_vda_hwaccel_select="h264_decoder"
2195 h264_vda_old_hwaccel_deps="vda"
2196 h264_vda_old_hwaccel_select="h264_decoder"
2197 h264_vdpau_hwaccel_deps="vdpau"
2198 h264_vdpau_hwaccel_select="h264_decoder"
2199 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2200 hevc_cuvid_hwaccel_select="hevc_decoder"
2201 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2202 hevc_d3d11va_hwaccel_select="hevc_decoder"
2203 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2204 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2205 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2206 hevc_dxva2_hwaccel_select="hevc_decoder"
2207 hevc_qsv_hwaccel_deps="libmfx"
2208 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2209 hevc_vaapi_hwaccel_select="hevc_decoder"
2210 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2211 hevc_vdpau_hwaccel_select="hevc_decoder"
2212 mpeg1_vdpau_hwaccel_deps="vdpau"
2213 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2214 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2215 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2216 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2217 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2218 mpeg2_dxva2_hwaccel_deps="dxva2"
2219 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2220 mpeg2_mmal_hwaccel_deps="mmal"
2221 mpeg2_qsv_hwaccel_deps="libmfx"
2222 mpeg2_vaapi_hwaccel_deps="vaapi"
2223 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2224 mpeg2_vdpau_hwaccel_deps="vdpau"
2225 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2226 mpeg4_vaapi_hwaccel_deps="vaapi"
2227 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2228 mpeg4_vdpau_hwaccel_deps="vdpau"
2229 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2230 vc1_d3d11va_hwaccel_deps="d3d11va"
2231 vc1_d3d11va_hwaccel_select="vc1_decoder"
2232 vc1_d3d11va2_hwaccel_deps="d3d11va"
2233 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2234 vc1_dxva2_hwaccel_deps="dxva2"
2235 vc1_dxva2_hwaccel_select="vc1_decoder"
2236 vc1_mmal_hwaccel_deps="mmal"
2237 vc1_qsv_hwaccel_deps="libmfx"
2238 vc1_vaapi_hwaccel_deps="vaapi"
2239 vc1_vaapi_hwaccel_select="vc1_decoder"
2240 vc1_vdpau_hwaccel_deps="vdpau"
2241 vc1_vdpau_hwaccel_select="vc1_decoder"
2242 vp8_qsv_hwaccel_deps="libmfx"
2243 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2244 vp8_vaapi_hwaccel_select="vp8_decoder"
2245 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2246 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2247 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2248 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2249 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2250
2251 # hardware-accelerated codecs
2252 nvenc_deps_any="libdl LoadLibrary"
2253 omx_deps="libdl pthreads"
2254 omx_rpi_select="omx"
2255 qsv_deps="libmfx"
2256 qsvdec_select="qsv"
2257 qsvenc_select="qsv"
2258 qsvvpp_select="qsv"
2259 vaapi_encode_deps="vaapi"
2260
2261 hwupload_cuda_filter_deps="cuda"
2262 scale_npp_filter_deps="cuda libnpp"
2263
2264 h264_mmal_decoder_deps="mmal"
2265 h264_nvenc_encoder_deps="nvenc"
2266 h264_omx_encoder_deps="omx"
2267 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2268 h264_qsv_encoder_select="qsvenc"
2269 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2270 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2271 hevc_nvenc_encoder_deps="nvenc"
2272 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2273 hevc_qsv_encoder_select="hevcparse qsvenc"
2274 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2275 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2276 mjpeg_qsv_encoder_deps="libmfx"
2277 mjpeg_qsv_encoder_select="qsvenc"
2278 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2279 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2280 mpeg2_mmal_decoder_deps="mmal"
2281 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2282 mpeg2_qsv_encoder_select="qsvenc"
2283 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2284 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2285 mpeg4_omx_encoder_deps="omx"
2286 vc1_mmal_decoder_deps="mmal"
2287 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2288 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2289 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2290 vp8_vaapi_encoder_select="vaapi_encode"
2291 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2292 vp9_vaapi_encoder_select="vaapi_encode"
2293
2294 nvenc_h264_encoder_select="h264_nvenc_encoder"
2295 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2296
2297 # parsers
2298 aac_parser_select="adts_header"
2299 h264_parser_select="golomb h264dsp h264parse"
2300 hevc_parser_select="hevcparse"
2301 mpegaudio_parser_select="mpegaudioheader"
2302 mpegvideo_parser_select="mpegvideo"
2303 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2304 vc1_parser_select="vc1dsp"
2305
2306 # bitstream_filters
2307 aac_adtstoasc_bsf_select="adts_header"
2308 h264_metadata_bsf_select="cbs_h264"
2309 h264_redundant_pps_bsf_select="cbs_h264"
2310 hevc_metadata_bsf_select="cbs_h265"
2311 mjpeg2jpeg_bsf_select="jpegtables"
2312 mpeg2_metadata_bsf_select="cbs_mpeg2"
2313 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2314
2315 # external libraries
2316 avisynth_deps="LoadLibrary"
2317 avxsynth_deps="libdl"
2318 avisynth_demuxer_deps_any="avisynth avxsynth"
2319 avisynth_demuxer_select="riffdec"
2320 libdcadec_decoder_deps="libdcadec"
2321 libfaac_encoder_deps="libfaac"
2322 libfaac_encoder_select="audio_frame_queue"
2323 libfdk_aac_decoder_deps="libfdk_aac"
2324 libfdk_aac_encoder_deps="libfdk_aac"
2325 libfdk_aac_encoder_select="audio_frame_queue"
2326 libgsm_decoder_deps="libgsm"
2327 libgsm_encoder_deps="libgsm"
2328 libgsm_ms_decoder_deps="libgsm"
2329 libgsm_ms_encoder_deps="libgsm"
2330 libilbc_decoder_deps="libilbc"
2331 libilbc_encoder_deps="libilbc"
2332 libkvazaar_encoder_deps="libkvazaar"
2333 libmp3lame_encoder_deps="libmp3lame"
2334 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2335 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2336 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2337 libopencore_amrnb_encoder_select="audio_frame_queue"
2338 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2339 libopenh264_decoder_deps="libopenh264"
2340 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2341 libopenh264_encoder_deps="libopenh264"
2342 libopenjpeg_decoder_deps="libopenjpeg"
2343 libopenjpeg_encoder_deps="libopenjpeg"
2344 libopus_decoder_deps="libopus"
2345 libopus_encoder_deps="libopus"
2346 libopus_encoder_select="audio_frame_queue"
2347 libschroedinger_decoder_deps="libschroedinger"
2348 libschroedinger_encoder_deps="libschroedinger"
2349 libspeex_decoder_deps="libspeex"
2350 libspeex_encoder_deps="libspeex"
2351 libspeex_encoder_select="audio_frame_queue"
2352 libtheora_encoder_deps="libtheora"
2353 libtwolame_encoder_deps="libtwolame"
2354 libvo_aacenc_encoder_deps="libvo_aacenc"
2355 libvo_aacenc_encoder_select="audio_frame_queue"
2356 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2357 libvorbis_encoder_deps="libvorbis"
2358 libvorbis_encoder_select="audio_frame_queue"
2359 libvpx_vp8_decoder_deps="libvpx"
2360 libvpx_vp8_encoder_deps="libvpx"
2361 libvpx_vp9_decoder_deps="libvpx"
2362 libvpx_vp9_encoder_deps="libvpx"
2363 libwavpack_encoder_deps="libwavpack"
2364 libwavpack_encoder_select="audio_frame_queue"
2365 libwebp_encoder_deps="libwebp"
2366 libx262_encoder_deps="libx262"
2367 libx264_encoder_deps="libx264"
2368 libx265_encoder_deps="libx265"
2369 libxavs_encoder_deps="libxavs"
2370 libxvid_encoder_deps="libxvid mkstemp"
2371
2372 # demuxers / muxers
2373 ac3_demuxer_select="ac3_parser"
2374 asf_demuxer_select="riffdec"
2375 asf_muxer_select="riffenc"
2376 asf_stream_muxer_select="asf_muxer"
2377 avi_demuxer_select="iso_media riffdec"
2378 avi_muxer_select="riffenc"
2379 caf_demuxer_select="iso_media riffdec"
2380 dash_muxer_select="mp4_muxer"
2381 dirac_demuxer_select="dirac_parser"
2382 dv_demuxer_select="dvprofile"
2383 dv_muxer_select="dvprofile"
2384 dxa_demuxer_select="riffdec"
2385 eac3_demuxer_select="ac3_parser"
2386 f4v_muxer_select="mov_muxer"
2387 flac_demuxer_select="flac_parser"
2388 hds_muxer_select="flv_muxer"
2389 hls_muxer_select="mpegts_muxer"
2390 ipod_muxer_select="mov_muxer"
2391 ismv_muxer_select="mov_muxer"
2392 matroska_audio_muxer_select="matroska_muxer"
2393 matroska_demuxer_select="iso_media riffdec"
2394 matroska_demuxer_suggest="bzlib lzo zlib"
2395 matroska_muxer_select="iso_media riffenc"
2396 mmf_muxer_select="riffenc"
2397 mov_demuxer_select="iso_media riffdec"
2398 mov_demuxer_suggest="zlib"
2399 mov_muxer_select="iso_media riffenc rtpenc_chain"
2400 mp3_demuxer_select="mpegaudio_parser"
2401 mp3_muxer_select="mpegaudioheader"
2402 mp4_muxer_select="mov_muxer"
2403 mpegts_demuxer_select="iso_media"
2404 mpegts_muxer_select="adts_muxer latm_muxer"
2405 mpegtsraw_demuxer_select="mpegts_demuxer"
2406 mxf_d10_muxer_select="mxf_muxer"
2407 nut_muxer_select="riffenc"
2408 nuv_demuxer_select="riffdec"
2409 oga_muxer_select="ogg_muxer"
2410 ogg_demuxer_select="dirac_parse"
2411 opus_muxer_select="ogg_muxer"
2412 psp_muxer_select="mov_muxer"
2413 rtp_demuxer_select="sdp_demuxer"
2414 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2415 rtsp_demuxer_select="http_protocol rtpdec"
2416 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2417 sap_demuxer_select="sdp_demuxer"
2418 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2419 sdp_demuxer_select="rtpdec"
2420 smoothstreaming_muxer_select="ismv_muxer"
2421 spdif_demuxer_select="adts_header"
2422 spdif_muxer_select="adts_header"
2423 spx_muxer_select="ogg_muxer"
2424 swf_demuxer_suggest="zlib"
2425 tak_demuxer_select="tak_parser"
2426 tg2_muxer_select="mov_muxer"
2427 tgp_muxer_select="mov_muxer"
2428 w64_demuxer_select="wav_demuxer"
2429 wav_demuxer_select="riffdec"
2430 wav_muxer_select="riffenc"
2431 webm_muxer_select="iso_media riffenc"
2432 wtv_demuxer_select="mpegts_demuxer riffdec"
2433 xmv_demuxer_select="riffdec"
2434 xwma_demuxer_select="riffdec"
2435
2436 # indevs / outdevs
2437 alsa_indev_deps="alsa"
2438 alsa_outdev_deps="alsa"
2439 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2440 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2441 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2442 dv1394_indev_deps="dv1394"
2443 dv1394_indev_select="dv_demuxer"
2444 fbdev_indev_deps="linux_fb_h"
2445 jack_indev_deps="libjack"
2446 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2447 libcdio_indev_deps="libcdio"
2448 libdc1394_indev_deps="libdc1394"
2449 oss_indev_deps_any="sys_soundcard_h"
2450 oss_outdev_deps_any="sys_soundcard_h"
2451 pulse_indev_deps="libpulse"
2452 sndio_indev_deps="sndio"
2453 sndio_outdev_deps="sndio"
2454 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2455 vfwcap_indev_deps="vfw32 vfwcap_defines"
2456 xcbgrab_indev_deps="libxcb libxcb_shape"
2457 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2458
2459 # protocols
2460 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2461 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2462 ffrtmpcrypt_protocol_select="tcp_protocol"
2463 ffrtmphttp_protocol_conflict="librtmp_protocol"
2464 ffrtmphttp_protocol_select="http_protocol"
2465 gopher_protocol_select="network"
2466 http_protocol_select="tcp_protocol"
2467 http_protocol_suggest="zlib"
2468 httpproxy_protocol_select="tcp_protocol"
2469 httpproxy_protocol_suggest="zlib"
2470 https_protocol_select="tls_protocol"
2471 https_protocol_suggest="zlib"
2472 icecast_protocol_select="http_protocol"
2473 librtmp_protocol_deps="librtmp"
2474 librtmpe_protocol_deps="librtmp"
2475 librtmps_protocol_deps="librtmp"
2476 librtmpt_protocol_deps="librtmp"
2477 librtmpte_protocol_deps="librtmp"
2478 mmsh_protocol_select="http_protocol"
2479 mmst_protocol_select="network"
2480 rtmp_protocol_conflict="librtmp_protocol"
2481 rtmp_protocol_select="tcp_protocol"
2482 rtmp_protocol_suggest="zlib"
2483 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2484 rtmpe_protocol_suggest="zlib"
2485 rtmps_protocol_conflict="librtmp_protocol"
2486 rtmps_protocol_select="tls_protocol"
2487 rtmps_protocol_suggest="zlib"
2488 rtmpt_protocol_select="ffrtmphttp_protocol"
2489 rtmpt_protocol_suggest="zlib"
2490 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2491 rtmpte_protocol_suggest="zlib"
2492 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2493 rtmpts_protocol_suggest="zlib"
2494 rtp_protocol_select="udp_protocol"
2495 sctp_protocol_deps="struct_sctp_event_subscribe"
2496 sctp_protocol_select="network"
2497 srtp_protocol_select="rtp_protocol srtp"
2498 tcp_protocol_select="network"
2499 tls_protocol_deps_any="gnutls openssl"
2500 tls_protocol_select="tcp_protocol"
2501 udp_protocol_select="network"
2502 unix_protocol_deps="sys_un_h"
2503 unix_protocol_select="network"
2504
2505 # filters
2506 asyncts_filter_deps="avresample"
2507 blackframe_filter_deps="gpl"
2508 boxblur_filter_deps="gpl"
2509 bs2b_filter_deps="libbs2b"
2510 cropdetect_filter_deps="gpl"
2511 deinterlace_qsv_filter_deps="libmfx"
2512 deinterlace_vaapi_filter_deps="vaapi"
2513 delogo_filter_deps="gpl"
2514 drawtext_filter_deps="libfreetype"
2515 drawtext_filter_suggest="libfontconfig"
2516 frei0r_filter_deps="frei0r libdl"
2517 frei0r_src_filter_deps="frei0r libdl"
2518 hdcd_filter_deps="libhdcd"
2519 hqdn3d_filter_deps="gpl"
2520 interlace_filter_deps="gpl"
2521 movie_filter_deps="avcodec avformat"
2522 ocv_filter_deps="libopencv"
2523 overlay_qsv_filter_deps="libmfx"
2524 overlay_qsv_filter_select="qsvvpp"
2525 resample_filter_deps="avresample"
2526 scale_filter_deps="swscale"
2527 scale_qsv_filter_deps="libmfx"
2528 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2529 vpp_qsv_filter_deps="libmfx"
2530 vpp_qsv_filter_select="qsvvpp"
2531
2532 # examples
2533 decode_audio_example_deps="avcodec avutil"
2534 decode_video_example_deps="avcodec avutil"
2535 encode_audio_example_deps="avcodec avutil"
2536 encode_video_example_deps="avcodec avutil"
2537 filter_audio_example_deps="avfilter avutil"
2538 metadata_example_deps="avformat avutil"
2539 output_example_deps="avcodec avformat avresample avutil swscale"
2540 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2541 transcode_aac_example_deps="avcodec avformat avresample"
2542
2543 # EXTRALIBS_LIST
2544 cpu_init_extralibs="pthreads_extralibs"
2545 cws2fws_extralibs="zlib_extralibs"
2546
2547 # libraries, in linking order
2548 avcodec_deps="avutil"
2549 avcodec_select="null_bsf"
2550 avdevice_deps="avformat avcodec avutil"
2551 avfilter_deps="avutil"
2552 avformat_deps="avcodec avutil"
2553 avformat_suggest="network"
2554 avresample_deps="avutil"
2555 swscale_deps="avutil"
2556
2557 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2558 avdevice_extralibs="libm_extralibs"
2559 avformat_extralibs="libm_extralibs"
2560 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2561 avresample_extralibs="libm_extralibs"
2562 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2563 swscale_extralibs="libm_extralibs"
2564
2565 # programs
2566 avconv_deps="avcodec avfilter avformat avresample swscale"
2567 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2568                fps_filter null_filter resample_filter scale_filter
2569                trim_filter"
2570 avconv_suggest="psapi shell32"
2571 avplay_deps="avcodec avfilter avformat avresample sdl"
2572 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2573 avplay_suggest="shell32"
2574 avprobe_deps="avcodec avformat"
2575 avprobe_suggest="shell32"
2576
2577 # documentation
2578 pod2man_deps="doc"
2579 texi2html_deps="doc"
2580
2581 # default parameters
2582
2583 logfile="avbuild/config.log"
2584
2585 # installation paths
2586 prefix_default="/usr/local"
2587 bindir_default='${prefix}/bin'
2588 datadir_default='${prefix}/share/avconv'
2589 docdir_default='${prefix}/share/doc/libav'
2590 incdir_default='${prefix}/include'
2591 libdir_default='${prefix}/lib'
2592 mandir_default='${prefix}/share/man'
2593 shlibdir_default="$libdir_default"
2594
2595 # toolchain
2596 ar_default="ar"
2597 cc_default="gcc"
2598 host_cc_default="gcc"
2599 x86asmexe_default="nasm"
2600 ln_s="ln -s -f"
2601 nm_default="nm -g"
2602 pkg_config_default=pkg-config
2603 ranlib="ranlib"
2604 strip="strip"
2605 version_script='--version-script'
2606
2607 # machine
2608 arch_default=$(uname -m)
2609 cpu="generic"
2610 intrinsics="none"
2611
2612 # OS
2613 target_os_default=$(tolower $(uname -s))
2614 host_os=$target_os_default
2615
2616 # configurable options
2617 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2618
2619 enable asm
2620 enable debug
2621 enable doc
2622 enable faan faandct faanidct
2623 enable optimizations
2624 enable safe_bitstream_reader
2625 enable static
2626 enable swscale_alpha
2627 enable valgrind_backtrace
2628
2629 # By default, enable only those hwaccels that have no external dependencies.
2630 enable d3d11va dxva2 vda vdpau
2631
2632 # internal components are enabled by default
2633 enable $EXTRALIBS_LIST
2634
2635 # Avoid external, non-system, libraries getting enabled by dependency resolution
2636 disable $EXTERNAL_LIBRARY_LIST
2637
2638 # build settings
2639 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2640 LIBPREF="lib"
2641 LIBSUF=".a"
2642 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2643 SLIBPREF="lib"
2644 SLIBSUF=".so"
2645 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2646 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2647 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2648 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2649 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2650 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2651 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2652
2653 asflags_filter=echo
2654 cflags_filter=echo
2655 ldflags_filter=echo
2656
2657 AS_C='-c'
2658 AS_O='-o $@'
2659 CC_C='-c'
2660 CC_E='-E -o $@'
2661 CC_O='-o $@'
2662 OBJCC_C='-c'
2663 OBJCC_E='-E -o $@'
2664 OBJCC_O='-o $@'
2665 X86ASM_O='-o $@'
2666 LD_O='-o $@'
2667 LD_LIB='-l%'
2668 LD_PATH='-L'
2669 HOSTCC_C='-c'
2670 HOSTCC_E='-E -o $@'
2671 HOSTCC_O='-o $@'
2672 HOSTLD_O='-o $@'
2673
2674 host_extralibs='-lm'
2675 host_cflags_filter=echo
2676 host_ldflags_filter=echo
2677
2678 target_path='$(CURDIR)'
2679
2680 # since the object filename is not given with the -MM flag, the compiler
2681 # is only able to print the basename, and we must add the path ourselves
2682 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2683 DEPFLAGS='-MM'
2684
2685 mkdir -p avbuild
2686
2687 # find source path
2688 if test -f configure; then
2689     source_path=.
2690 else
2691     source_path=$(cd $(dirname "$0"); pwd)
2692     echo "$source_path" | grep -q '[[:blank:]]' &&
2693         die "Out of tree builds are impossible with whitespace in source path."
2694     test -e "$source_path/config.h" &&
2695         die "Out of tree builds are impossible with config.h in source dir."
2696 fi
2697
2698 for v in "$@"; do
2699     r=${v#*=}
2700     l=${v%"$r"}
2701     r=$(sh_quote "$r")
2702     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2703 done
2704
2705 find_things(){
2706     thing=$1
2707     pattern=$2
2708     file=$source_path/$3
2709     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2710 }
2711
2712 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2713 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2714 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2715 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2716 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2717 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2718 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2719 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2720 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2721
2722 find_things_extern(){
2723     thing=$1
2724     pattern=$2
2725     file=$source_path/$3
2726     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2727 }
2728
2729 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2730 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2731
2732 AVCODEC_COMPONENTS_LIST="
2733     $BSF_LIST
2734     $DECODER_LIST
2735     $ENCODER_LIST
2736     $HWACCEL_LIST
2737     $PARSER_LIST
2738 "
2739
2740 AVDEVICE_COMPONENTS_LIST="
2741     $INDEV_LIST
2742     $OUTDEV_LIST
2743 "
2744
2745 AVFILTER_COMPONENTS_LIST="
2746     $FILTER_LIST
2747 "
2748
2749 AVFORMAT_COMPONENTS_LIST="
2750     $DEMUXER_LIST
2751     $MUXER_LIST
2752     $PROTOCOL_LIST
2753 "
2754
2755 ALL_COMPONENTS="
2756     $AVCODEC_COMPONENTS_LIST
2757     $AVDEVICE_COMPONENTS_LIST
2758     $AVFILTER_COMPONENTS_LIST
2759     $AVFORMAT_COMPONENTS_LIST
2760 "
2761
2762 for n in $COMPONENT_LIST; do
2763     v=$(toupper ${n%s})_LIST
2764     eval enable \$$v
2765     eval ${n}_if_any="\$$v"
2766 done
2767
2768 enable $ARCH_EXT_LIST
2769
2770 die_unknown(){
2771     echo "Unknown option \"$1\"."
2772     echo "See $0 --help for available options."
2773     exit 1
2774 }
2775
2776 print_3_columns() {
2777     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2778 }
2779
2780 show_list() {
2781     suffix=_$1
2782     shift
2783     echo $* | sed s/$suffix//g | print_3_columns
2784     exit 0
2785 }
2786
2787 for opt do
2788     optval="${opt#*=}"
2789     case "$opt" in
2790         --extra-ldflags=*)
2791             add_ldflags $optval
2792         ;;
2793         --extra-ldexeflags=*)
2794             add_ldexeflags $optval
2795         ;;
2796         --extra-ldsoflags=*)
2797             add_ldsoflags $optval
2798         ;;
2799         --extra-libs=*)
2800             add_extralibs $optval
2801         ;;
2802         --disable-devices)
2803             disable $INDEV_LIST $OUTDEV_LIST
2804         ;;
2805         --enable-debug=*)
2806             debuglevel="$optval"
2807         ;;
2808         --disable-programs)
2809             disable $PROGRAM_LIST
2810         ;;
2811         --disable-everything)
2812             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2813         ;;
2814         --disable-all)
2815             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2816             disable $LIBRARY_LIST $PROGRAM_LIST doc
2817         ;;
2818         --enable-*=*|--disable-*=*)
2819             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2820             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2821             eval list=\$$(toupper $thing)_LIST
2822             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2823             $action $(filter "$name" $list)
2824         ;;
2825         --enable-yasm|--disable-yasm)
2826             warn "The ${opt} option is only provided for compatibility and will be\n"\
2827                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2828             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2829         ;;
2830         --enable-?*|--disable-?*)
2831             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2832             if is_in $option $COMPONENT_LIST; then
2833                 test $action = disable && action=unset
2834                 eval $action \$$(toupper ${option%s})_LIST
2835             elif is_in $option $CMDLINE_SELECT; then
2836                 $action $option
2837             else
2838                 die_unknown $opt
2839             fi
2840         ;;
2841         --list-*)
2842             NAME="${opt#--list-}"
2843             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2844             NAME=${NAME%s}
2845             eval show_list $NAME \$$(toupper $NAME)_LIST
2846         ;;
2847         --help|-h) show_help
2848         ;;
2849         --quiet|-q) quiet=yes
2850         ;;
2851         *)
2852             optname="${opt%%=*}"
2853             optname="${optname#--}"
2854             optname=$(echo "$optname" | sed 's/-/_/g')
2855             if is_in $optname $CMDLINE_SET; then
2856                 eval $optname='$optval'
2857             elif is_in $optname $CMDLINE_APPEND; then
2858                 append $optname "$optval"
2859             else
2860                 die_unknown $opt
2861             fi
2862         ;;
2863     esac
2864 done
2865
2866 for e in $env; do
2867     eval "export $e"
2868 done
2869
2870 disabled logging && logfile=/dev/null
2871
2872 # Die early if licensing-related configure options are incompatible.
2873 die_license_disabled() {
2874     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2875 }
2876
2877 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2878 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2879 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2880
2881 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2882
2883 enabled_all gnutls openssl &&
2884     die "GnuTLS and OpenSSL must not be enabled at the same time."
2885
2886 # Disable all the library-specific components if the library itself
2887 # is disabled, see AVCODEC_LIST and following _LIST variables.
2888
2889 disable_components(){
2890     disabled ${1} && disable $(
2891         eval components="\$$(toupper ${1})_COMPONENTS"
2892         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2893     )
2894 }
2895
2896 map 'disable_components $v' $LIBRARY_LIST
2897
2898 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2899 set >> $logfile
2900
2901 case "$toolchain" in
2902     *-asan)
2903         cc_default="${toolchain%-asan}"
2904         add_cflags  -fsanitize=address
2905         add_ldflags -fsanitize=address
2906     ;;
2907     *-msan)
2908         cc_default="${toolchain%-msan}"
2909         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2910         add_ldflags -fsanitize=memory
2911     ;;
2912     *-tsan)
2913         cc_default="${toolchain%-tsan}"
2914         add_cflags  -fsanitize=thread -fPIE
2915         add_ldflags -fsanitize=thread -pie
2916         case "$toolchain" in
2917             gcc-tsan)
2918                 add_cflags  -fPIC
2919                 add_ldflags -fPIC
2920                 ;;
2921         esac
2922     ;;
2923     *-usan)
2924         cc_default="${toolchain%-usan}"
2925         add_cflags  -fsanitize=undefined
2926         add_ldflags -fsanitize=undefined
2927         case "$toolchain" in
2928             clang-usan)
2929                 add_cflags -O1
2930                 ;;
2931         esac
2932     ;;
2933     valgrind-*)
2934         target_exec_default="valgrind"
2935         case "$toolchain" in
2936             valgrind-massif)
2937                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2938                 ;;
2939             valgrind-memcheck)
2940                 target_exec_args="--track-origins=yes --leak-check=full"
2941                 ;;
2942         esac
2943     ;;
2944     msvc)
2945         # Check whether the current MSVC version needs the C99 converter.
2946         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2947         # support enough of C99 to build libav. Default to the new
2948         # behaviour if the regexp was unable to match anything, since this
2949         # successfully parses the version number of existing supported
2950         # versions that require the converter (MSVC 2010 and 2012).
2951         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2952         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2953             cc_default="cl"
2954         else
2955             cc_default="c99wrap cl"
2956         fi
2957         ld_default="$source_path/compat/windows/mslink"
2958         nm_default="dumpbin -symbols"
2959         ar_default="lib"
2960         case "$arch" in
2961         arm*)
2962             as_default="armasm"
2963             ;;
2964         esac
2965         target_os_default="win32"
2966         # Use a relative path for TMPDIR. This makes sure all the
2967         # ffconf temp files are written with a relative path, avoiding
2968         # issues with msys/win32 path conversion for MSVC parameters
2969         # such as -Fo<file> or -out:<file>.
2970         TMPDIR=.
2971     ;;
2972     icl)
2973         cc_default="icl"
2974         ld_default="xilink"
2975         nm_default="dumpbin -symbols"
2976         ar_default="xilib"
2977         target_os_default="win32"
2978         TMPDIR=.
2979     ;;
2980     gcov)
2981         add_cflags  -fprofile-arcs -ftest-coverage
2982         add_ldflags -fprofile-arcs -ftest-coverage
2983     ;;
2984     llvm-cov)
2985         add_cflags -fprofile-arcs -ftest-coverage
2986         add_ldflags --coverage
2987     ;;
2988     hardened)
2989         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2990         add_cflags   -fno-strict-overflow -fstack-protector-all
2991         add_ldflags  -Wl,-z,relro -Wl,-z,now
2992     ;;
2993     ?*)
2994         die "Unknown toolchain $toolchain"
2995     ;;
2996 esac
2997
2998 test -n "$cross_prefix" && enable cross_compile
2999
3000 if enabled cross_compile; then
3001     test -n "$arch" && test -n "$target_os" ||
3002         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3003 fi
3004
3005 ar_default="${cross_prefix}${ar_default}"
3006 cc_default="${cross_prefix}${cc_default}"
3007 objcc_default="${cross_prefix}${objcc_default}"
3008 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3009 nm_default="${cross_prefix}${nm_default}"
3010 pkg_config_default="${cross_prefix}${pkg_config_default}"
3011 ranlib="${cross_prefix}${ranlib}"
3012 strip="${cross_prefix}${strip}"
3013
3014 sysinclude_default="${sysroot}/usr/include"
3015
3016 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3017 enabled cross_compile || host_cc_default=$cc
3018 set_default host_cc
3019
3020 if ! $pkg_config --version >/dev/null 2>&1; then
3021     warn "$pkg_config not found, library detection may fail."
3022     pkg_config=false
3023 fi
3024
3025 exesuf() {
3026     case $1 in
3027         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3028     esac
3029 }
3030
3031 EXESUF=$(exesuf $target_os)
3032 HOSTEXESUF=$(exesuf $host_os)
3033
3034 # set temporary file name
3035 : ${TMPDIR:=$TEMPDIR}
3036 : ${TMPDIR:=$TMP}
3037 : ${TMPDIR:=/tmp}
3038
3039 if ! check_cmd mktemp -u XXXXXX; then
3040     # simple replacement for missing mktemp
3041     # NOT SAFE FOR GENERAL USE
3042     mktemp(){
3043         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3044         echo "$tmpname"
3045         mkdir "$tmpname"
3046     }
3047 fi
3048
3049 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3050     die "Unable to create temporary directory in $TMPDIR."
3051
3052 tmpfile(){
3053     tmp="${AVTMPDIR}/test"$2
3054     (set -C; exec > $tmp) 2> /dev/null ||
3055         die "Unable to create temporary file in $AVTMPDIR."
3056     eval $1=$tmp
3057 }
3058
3059 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3060 trap 'exit 2' INT
3061
3062 tmpfile TMPASM .asm
3063 tmpfile TMPC   .c
3064 tmpfile TMPE   $EXESUF
3065 tmpfile TMPH   .h
3066 tmpfile TMPO   .o
3067 tmpfile TMPS   .S
3068 tmpfile TMPSH  .sh
3069 tmpfile TMPV   .ver
3070
3071 unset -f mktemp
3072
3073 chmod +x $TMPE
3074
3075 # make sure we can execute files in $TMPDIR
3076 cat > $TMPSH 2>> $logfile <<EOF
3077 #! /bin/sh
3078 EOF
3079 chmod +x $TMPSH >> $logfile 2>&1
3080 if ! $TMPSH >> $logfile 2>&1; then
3081     cat <<EOF
3082 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3083 variable to another directory and make sure that it is not mounted noexec.
3084 EOF
3085     die "Sanity test failed."
3086 fi
3087
3088 armasm_flags(){
3089     for flag; do
3090         case $flag in
3091             # Filter out MSVC cl.exe options from cflags that shouldn't
3092             # be passed to gas-preprocessor
3093             -M[TD]*)                                            ;;
3094             *)                  echo $flag                      ;;
3095         esac
3096    done
3097 }
3098
3099 cparser_flags(){
3100     for flag; do
3101         case $flag in
3102             -Wno-switch)             echo -Wno-switch-enum ;;
3103             -Wno-format-zero-length) ;;
3104             -Wdisabled-optimization) ;;
3105             -Wno-pointer-sign)       echo -Wno-other ;;
3106             *)                       echo $flag ;;
3107         esac
3108     done
3109 }
3110
3111 msvc_common_flags(){
3112     for flag; do
3113         case $flag in
3114             # In addition to specifying certain flags under the compiler
3115             # specific filters, they must be specified here as well or else the
3116             # generic catch all at the bottom will print the original flag.
3117             -Wall)                ;;
3118             -Wextra)              ;;
3119             -std=c99)             ;;
3120             # Common flags
3121             -fomit-frame-pointer) ;;
3122             -g)                   echo -Z7 ;;
3123             -fno-math-errno)      ;;
3124             -fno-common)          ;;
3125             -fno-signed-zeros)    ;;
3126             -fPIC)                ;;
3127             -mthumb)              ;;
3128             -march=*)             ;;
3129             -lz)                  echo zlib.lib ;;
3130             -lx264)               echo libx264.lib ;;
3131             -l*)                  echo ${flag#-l}.lib ;;
3132             -L*)                  echo -libpath:${flag#-L} ;;
3133             *)                    echo $flag ;;
3134         esac
3135     done
3136 }
3137
3138 msvc_flags(){
3139     msvc_common_flags "$@"
3140     for flag; do
3141         case $flag in
3142             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3143                                        -wd4554 ;;
3144             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3145                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3146                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3147                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3148         esac
3149     done
3150 }
3151
3152 icl_flags(){
3153     msvc_common_flags "$@"
3154     for flag; do
3155         case $flag in
3156             # Despite what Intel's documentation says -Wall, which is supported
3157             # on Windows, does enable remarks so disable them here.
3158             -Wall)                echo $flag -Qdiag-disable:remark ;;
3159             -std=c99)             echo -Qstd=c99 ;;
3160         esac
3161     done
3162 }
3163
3164 pgi_flags(){
3165     for flag; do
3166         case $flag in
3167             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3168             -fomit-frame-pointer) echo -Mnoframe ;;
3169             -g)                   echo -gopt ;;
3170             *)                    echo $flag ;;
3171         esac
3172     done
3173 }
3174
3175 suncc_flags(){
3176     for flag; do
3177         case $flag in
3178             -march=*|-mcpu=*)
3179                 case "${flag#*=}" in
3180                     native)                   echo -xtarget=native       ;;
3181                     v9|niagara)               echo -xarch=sparc          ;;
3182                     ultrasparc)               echo -xarch=sparcvis       ;;
3183                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3184                     i586|pentium)             echo -xchip=pentium        ;;
3185                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3186                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3187                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3188                     pentium4*)          echo -xtarget=pentium4           ;;
3189                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3190                     *-sse3)             echo -xarch=sse3                 ;;
3191                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3192                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3193                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3194                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3195                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3196                     k8|opteron|athlon64|athlon-fx)
3197                                                echo -xarch=sse2a         ;;
3198                     athlon*)                   echo -xarch=pentium_proa  ;;
3199                 esac
3200                 ;;
3201             -std=c99)             echo -xc99              ;;
3202             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3203             -fPIC)                echo -KPIC -xcode=pic32 ;;
3204             -W*,*)                echo $flag              ;;
3205             -f*-*|-W*|-mimpure-text)                      ;;
3206             -shared)              echo -G                 ;;
3207             *)                    echo $flag              ;;
3208         esac
3209     done
3210 }
3211
3212 tms470_flags(){
3213     for flag; do
3214         case $flag in
3215             -march=*|-mcpu=*)
3216                 case "${flag#*=}" in
3217                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3218                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3219                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3220                     armv6*|arm11*)          echo -mv=6   ;;
3221                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3222                                             echo -mv=5e  ;;
3223                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3224                 esac
3225                 ;;
3226             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3227             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3228             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3229             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3230             -msoft-float)   echo --float_support=vfplib       ;;
3231             -O[0-3]|-mf=*)  echo $flag                        ;;
3232             -g)             echo -g -mn                       ;;
3233             -pds=*)         echo $flag                        ;;
3234             -D*|-I*)        echo $flag                        ;;
3235             --gcc|--abi=*)  echo $flag                        ;;
3236             -me)            echo $flag                        ;;
3237         esac
3238     done
3239 }
3240
3241 probe_cc(){
3242     pfx=$1
3243     _cc=$2
3244
3245     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3246     unset _ld_o _ldflags _ld_lib _ld_path
3247     unset _depflags _DEPCMD _DEPFLAGS
3248     _flags_filter=echo
3249
3250     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3251         _type=llvm_gcc
3252         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3253         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3254         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3255         _cflags_speed='-O3'
3256         _cflags_size='-Os'
3257     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3258         _type=gcc
3259         gcc_version=$($_cc --version | head -n1)
3260         gcc_basever=$($_cc -dumpversion)
3261         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3262         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3263         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3264         if ! $_cc -dumpversion | grep -q '^2\.'; then
3265             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3266         fi
3267         _cflags_speed='-O3'
3268         _cflags_size='-Os'
3269     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3270         _type=icc
3271         _ident=$($_cc --version | head -n1)
3272         _depflags='-MMD'
3273         _cflags_speed='-O3'
3274         _cflags_size='-Os'
3275         _cflags_noopt='-O1'
3276     elif $_cc -v 2>&1 | grep -q xlc; then
3277         _type=xlc
3278         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3279         _cflags_speed='-O5'
3280         _cflags_size='-O5 -qcompact'
3281     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3282         test -d "$sysroot" || die "No valid sysroot specified."
3283         _type=armcc
3284         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3285         armcc_conf="$PWD/armcc.conf"
3286         $_cc --arm_linux_configure                 \
3287              --arm_linux_config_file="$armcc_conf" \
3288              --configure_sysroot="$sysroot"        \
3289              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3290              die "Error creating armcc configuration file."
3291         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3292         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3293         as_default="${cross_prefix}gcc"
3294         _depflags='-MMD'
3295         _cflags_speed='-O3'
3296         _cflags_size='-Os'
3297     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3298         _type=tms470
3299         _ident=$($_cc -version | head -n1 | tr -s ' ')
3300         _flags='--gcc --abi=eabi -me'
3301         _cc_e='-ppl -fe=$@'
3302         _cc_o='-fe=$@'
3303         _depflags='-ppa -ppd=$(@:.o=.d)'
3304         _cflags_speed='-O3 -mf=5'
3305         _cflags_size='-O3 -mf=2'
3306         _flags_filter=tms470_flags
3307     elif $_cc -v 2>&1 | grep -q clang; then
3308         _type=clang
3309         _ident=$($_cc --version 2>/dev/null | head -n1)
3310         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3311         _cflags_speed='-O3'
3312         _cflags_size='-Os'
3313     elif $_cc -V 2>&1 | grep -q Sun; then
3314         _type=suncc
3315         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3316         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3317         _DEPFLAGS='-xM1 -xc99'
3318         _ldflags='-std=c99'
3319         _cflags_speed='-O5'
3320         _cflags_size='-O5 -xspace'
3321         _flags_filter=suncc_flags
3322     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3323         _type=pathscale
3324         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3325         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3326         _cflags_speed='-O2'
3327         _cflags_size='-Os'
3328         _flags_filter='filter_out -Wdisabled-optimization'
3329     elif $_cc -v 2>&1 | grep -q Open64; then
3330         _type=open64
3331         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3332         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3333         _cflags_speed='-O2'
3334         _cflags_size='-Os'
3335         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3336     elif $_cc -V 2>&1 | grep -q Portland; then
3337         _type=pgi
3338         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3339         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3340         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3341         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3342         _cflags_noopt="-O1"
3343         _flags_filter=pgi_flags
3344     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3345         _type=armasm
3346         _ident=$($_cc | head -n1)
3347         # 4509: "This form of conditional instruction is deprecated"
3348         _flags="-nologo -ignore 4509"
3349         _flags_filter=armasm_flags
3350     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3351         _type=msvc
3352         _ident=$($_cc 2>&1 | head -n1)
3353         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3354         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3355         _cflags_speed="-O2"
3356         _cflags_size="-O1"
3357         _cflags_noopt="-O1"
3358         if $_cc -nologo- 2>&1 | grep -q Linker; then
3359             _ld_o='-out:$@'
3360         else
3361             _ld_o='-Fe$@'
3362         fi
3363         _cc_o='-Fo$@'
3364         _cc_e='-P -Fi$@'
3365         _flags_filter=msvc_flags
3366         _ld_lib='lib%.a'
3367         _ld_path='-libpath:'
3368         _flags='-nologo'
3369     elif $_cc 2>&1 | grep -q Intel; then
3370         _type=icl
3371         _ident=$($_cc 2>&1 | head -n1)
3372         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3373         # Not only is O3 broken on 13.x+ but it is slower on all previous
3374         # versions (tested) as well.
3375         _cflags_speed="-O2"
3376         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3377         if $_cc 2>&1 | grep -q Linker; then
3378             _ld_o='-out:$@'
3379         else
3380             _ld_o='-Fe$@'
3381         fi
3382         _cc_o='-Fo$@'
3383         _cc_e='-P'
3384         _flags_filter=icl_flags
3385         _ld_lib='lib%.a'
3386         _ld_path='-libpath:'
3387         # -Qdiag-error to make icl error when seeing certain unknown arguments
3388         _flags='-nologo -Qdiag-error:4044,10157'
3389         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3390         # with MSVC which enables it by default.
3391         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3392     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3393         # lld can emulate multiple different linkers; in ms link.exe mode,
3394         # the -? parameter gives the help output which contains an identifyable
3395         # string, while it gives an error in other modes.
3396         _type=lld-link
3397         # The link.exe mode doesn't have a switch for getting the version,
3398         # but we can force it back to gnu mode and get the version from there.
3399         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3400         _ld_o='-out:$@'
3401         _flags_filter=msvc_flags
3402         _ld_lib='lib%.a'
3403         _ld_path='-libpath:'
3404     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3405         _type=cparser
3406         _ident=$($_cc --version | head -n1)
3407         _depflags='-MMD'
3408         _cflags_speed='-O4'
3409         _cflags_size='-O2'
3410         _flags_filter=cparser_flags
3411     fi
3412
3413     eval ${pfx}_type=\$_type
3414     eval ${pfx}_ident=\$_ident
3415 }
3416
3417 set_ccvars(){
3418     eval ${1}_C=\${_cc_c-\${${1}_C}}
3419     eval ${1}_E=\${_cc_e-\${${1}_E}}
3420     eval ${1}_O=\${_cc_o-\${${1}_O}}
3421
3422     if [ -n "$_depflags" ]; then
3423         eval ${1}_DEPFLAGS=\$_depflags
3424     else
3425         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3426         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3427         eval DEP${1}FLAGS=\$_flags
3428     fi
3429 }
3430
3431 probe_cc cc "$cc"
3432 cflags_filter=$_flags_filter
3433 cflags_speed=$_cflags_speed
3434 cflags_size=$_cflags_size
3435 cflags_noopt=$_cflags_noopt
3436 add_cflags $_flags $_cflags
3437 cc_ldflags=$_ldflags
3438 set_ccvars CC
3439
3440 probe_cc hostcc "$host_cc"
3441 host_cflags_filter=$_flags_filter
3442 host_cflags_speed=$_cflags_speed
3443 add_host_cflags  $_flags $_cflags
3444 set_ccvars HOSTCC
3445
3446 test -n "$cc_type" && enable $cc_type ||
3447     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3448
3449 : ${as_default:=$cc}
3450 : ${objcc_default:=$cc}
3451 : ${dep_cc_default:=$cc}
3452 : ${ld_default:=$cc}
3453 : ${host_ld_default:=$host_cc}
3454 set_default ar as objcc dep_cc ld host_ld
3455
3456 probe_cc as "$as"
3457 asflags_filter=$_flags_filter
3458 add_asflags $_flags $_cflags
3459 set_ccvars AS
3460
3461 probe_cc objcc "$objcc"
3462 objcflags_filter=$_flags_filter
3463 add_objcflags $_flags $_cflags
3464 set_ccvars OBJC
3465
3466 probe_cc ld "$ld"
3467 ldflags_filter=$_flags_filter
3468 add_ldflags $_flags $_ldflags
3469 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3470 LD_O=${_ld_o-$LD_O}
3471 LD_LIB=${_ld_lib-$LD_LIB}
3472 LD_PATH=${_ld_path-$LD_PATH}
3473
3474 probe_cc hostld "$host_ld"
3475 host_ldflags_filter=$_flags_filter
3476 add_host_ldflags $_flags $_ldflags
3477 HOSTLD_O=${_ld_o-$HOSTLD_O}
3478
3479 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3480     probe_cc depcc "$dep_cc"
3481     CCDEP=${_DEPCMD:-$DEPCMD}
3482     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3483     DEPCCFLAGS=$_flags
3484 fi
3485
3486 if $ar 2>&1 | grep -q Microsoft; then
3487     arflags="-nologo"
3488     ar_o='-out:$@'
3489 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3490     arflags="rq"
3491     ar_o='$@'
3492 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3493     arflags='-Xany -r -c'
3494     ar_o='$@'
3495 else
3496     arflags="rc"
3497     ar_o='$@'
3498 fi
3499
3500 add_cflags $extra_cflags
3501 add_objcflags $extra_objcflags
3502 add_asflags $extra_cflags
3503
3504 if test -n "$sysroot"; then
3505     case "$cc_type" in
3506         gcc|llvm_gcc|clang)
3507             add_cppflags --sysroot="$sysroot"
3508             add_ldflags --sysroot="$sysroot"
3509         ;;
3510         tms470)
3511             add_cppflags -I"$sysinclude"
3512             add_ldflags  --sysroot="$sysroot"
3513         ;;
3514     esac
3515 fi
3516
3517 if test "$cpu" = host; then
3518     enabled cross_compile &&
3519         die "--cpu=host makes no sense when cross-compiling."
3520
3521     case "$cc_type" in
3522         gcc|llvm_gcc)
3523             check_native(){
3524                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3525                 sed -n "/cc1.*$1=/{
3526                             s/.*$1=\\([^ ]*\\).*/\\1/
3527                             p
3528                             q
3529                         }" $TMPE
3530             }
3531             cpu=$(check_native -march || check_native -mcpu)
3532         ;;
3533     esac
3534
3535     test "${cpu:-host}" = host &&
3536         die "--cpu=host not supported with compiler $cc"
3537 fi
3538
3539 # Deal with common $arch aliases
3540 case "$arch" in
3541     aarch64|arm64)
3542         arch="aarch64"
3543     ;;
3544     arm*)
3545         arch="arm"
3546     ;;
3547     mips*|IP*)
3548         case "$arch" in
3549         *el)
3550             add_cppflags -EL
3551             add_ldflags -EL
3552         ;;
3553         *eb)
3554             add_cppflags -EB
3555             add_ldflags -EB
3556         ;;
3557         esac
3558         arch="mips"
3559     ;;
3560     parisc*|hppa*)
3561         arch="parisc"
3562     ;;
3563     "Power Macintosh"|ppc*|powerpc*)
3564         arch="ppc"
3565     ;;
3566     s390|s390x)
3567         arch="s390"
3568     ;;
3569     sh4|sh)
3570         arch="sh4"
3571     ;;
3572     sun4u|sparc*)
3573         arch="sparc"
3574     ;;
3575     tilegx|tile-gx)
3576         arch="tilegx"
3577     ;;
3578     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3579         arch="x86"
3580     ;;
3581 esac
3582
3583 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3584 enable $arch
3585
3586 # Add processor-specific flags
3587 if enabled aarch64; then
3588
3589     case $cpu in
3590         armv*)
3591             cpuflags="-march=$cpu"
3592         ;;
3593         *)
3594             cpuflags="-mcpu=$cpu"
3595         ;;
3596     esac
3597
3598 elif enabled alpha; then
3599
3600     cpuflags="-mcpu=$cpu"
3601
3602 elif enabled arm; then
3603
3604     check_arm_arch() {
3605         check_cpp_condition stddef.h \
3606             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3607             $cpuflags
3608     }
3609
3610     probe_arm_arch() {
3611         if   check_arm_arch 4;        then echo armv4
3612         elif check_arm_arch 4T;       then echo armv4t
3613         elif check_arm_arch 5;        then echo armv5
3614         elif check_arm_arch 5E;       then echo armv5e
3615         elif check_arm_arch 5T;       then echo armv5t
3616         elif check_arm_arch 5TE;      then echo armv5te
3617         elif check_arm_arch 5TEJ;     then echo armv5te
3618         elif check_arm_arch 6;        then echo armv6
3619         elif check_arm_arch 6J;       then echo armv6j
3620         elif check_arm_arch 6K;       then echo armv6k
3621         elif check_arm_arch 6Z;       then echo armv6z
3622         elif check_arm_arch 6ZK;      then echo armv6zk
3623         elif check_arm_arch 6T2;      then echo armv6t2
3624         elif check_arm_arch 7;        then echo armv7
3625         elif check_arm_arch 7A  7_A;  then echo armv7-a
3626         elif check_arm_arch 7S;       then echo armv7-a
3627         elif check_arm_arch 7R  7_R;  then echo armv7-r
3628         elif check_arm_arch 7M  7_M;  then echo armv7-m
3629         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3630         elif check_arm_arch 8A  8_A;  then echo armv8-a
3631         fi
3632     }
3633
3634     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3635
3636     case $cpu in
3637         armv*)
3638             cpuflags="-march=$cpu"
3639             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3640         ;;
3641         *)
3642             cpuflags="-mcpu=$cpu"
3643             case $cpu in
3644                 cortex-a*)                               subarch=armv7a  ;;
3645                 cortex-r*)                               subarch=armv7r  ;;
3646                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3647                 arm11*)                                  subarch=armv6   ;;
3648                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3649                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3650                 *)                             subarch=$(probe_arm_arch) ;;
3651             esac
3652         ;;
3653     esac
3654
3655     case "$subarch" in
3656         armv5t*)    enable fast_clz                ;;
3657         armv[6-8]*) enable fast_clz fast_unaligned ;;
3658     esac
3659
3660 elif enabled avr32; then
3661
3662     case $cpu in
3663         ap7[02]0[0-2])
3664             subarch="avr32_ap"
3665             cpuflags="-mpart=$cpu"
3666         ;;
3667         ap)
3668             subarch="avr32_ap"
3669             cpuflags="-march=$cpu"
3670         ;;
3671         uc3[ab]*)
3672             subarch="avr32_uc"
3673             cpuflags="-mcpu=$cpu"
3674         ;;
3675         uc)
3676             subarch="avr32_uc"
3677             cpuflags="-march=$cpu"
3678         ;;
3679     esac
3680
3681 elif enabled bfin; then
3682
3683     cpuflags="-mcpu=$cpu"
3684
3685 elif enabled mips; then
3686
3687     cpuflags="-march=$cpu"
3688
3689 elif enabled ppc; then
3690
3691     disable ldbrx
3692
3693     case $(tolower $cpu) in
3694         601|ppc601|powerpc601)
3695             cpuflags="-mcpu=601"
3696             disable altivec
3697         ;;
3698         603*|ppc603*|powerpc603*)
3699             cpuflags="-mcpu=603"
3700             disable altivec
3701         ;;
3702         604*|ppc604*|powerpc604*)
3703             cpuflags="-mcpu=604"
3704             disable altivec
3705         ;;
3706         g3|75*|ppc75*|powerpc75*)
3707             cpuflags="-mcpu=750"
3708             disable altivec
3709         ;;
3710         g4|745*|ppc745*|powerpc745*)
3711             cpuflags="-mcpu=7450"
3712             disable vsx
3713         ;;
3714         74*|ppc74*|powerpc74*)
3715             cpuflags="-mcpu=7400"
3716             disable vsx
3717         ;;
3718         g5|970|ppc970|powerpc970)
3719             cpuflags="-mcpu=970"
3720             disable vsx
3721         ;;
3722         power[3-6]*)
3723             cpuflags="-mcpu=$cpu"
3724             disable vsx
3725         ;;
3726         power[7-8]*)
3727             cpuflags="-mcpu=$cpu"
3728             enable ldbrx
3729         ;;
3730         cell)
3731             cpuflags="-mcpu=cell"
3732             enable ldbrx
3733             disable vsx
3734         ;;
3735         e500mc)
3736             cpuflags="-mcpu=e500mc"
3737             disable altivec
3738         ;;
3739         e500v2)
3740             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3741             disable altivec
3742             disable dcbzl
3743         ;;
3744         e500)
3745             cpuflags="-mcpu=8540 -mhard-float"
3746             disable altivec
3747             disable dcbzl
3748         ;;
3749     esac
3750
3751 elif enabled sparc; then
3752
3753     case $cpu in
3754         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3755             cpuflags="-mcpu=$cpu"
3756         ;;
3757         ultrasparc*|niagara[234])
3758             cpuflags="-mcpu=$cpu"
3759         ;;
3760     esac
3761
3762 elif enabled x86; then
3763
3764     case $cpu in
3765         i[345]86|pentium)
3766             cpuflags="-march=$cpu"
3767             disable i686
3768             disable mmx
3769         ;;
3770         # targets that do NOT support nopl and conditional mov (cmov)
3771         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3772             cpuflags="-march=$cpu"
3773             disable i686
3774         ;;
3775         # targets that do support nopl and conditional mov (cmov)
3776         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3777             cpuflags="-march=$cpu"
3778             enable i686
3779             enable fast_cmov
3780         ;;
3781         # targets that do support conditional mov but on which it's slow
3782         pentium4|pentium4m|prescott|nocona)
3783             cpuflags="-march=$cpu"
3784             enable i686
3785             disable fast_cmov
3786         ;;
3787     esac
3788
3789 fi
3790
3791 if [ "$cpu" != generic ]; then
3792     add_cflags  $cpuflags
3793     add_asflags $cpuflags
3794     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3795 fi
3796
3797 # compiler sanity check
3798 check_exec <<EOF
3799 int main(void){ return 0; }
3800 EOF
3801 if test "$?" != 0; then
3802     echo "$cc is unable to create an executable file."
3803     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3804         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3805         echo "Only do this if you know what cross compiling means."
3806     fi
3807     die "C compiler test failed."
3808 fi
3809
3810 add_cppflags -D_ISOC99_SOURCE
3811
3812 # some compilers silently accept -std=c11, so we also need to check that the
3813 # version macro is defined properly
3814 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3815     add_cflags -std=c11 ||
3816     check_cflags -std=c99
3817
3818 check_cppflags -D_FILE_OFFSET_BITS=64
3819 check_cppflags -D_LARGEFILE_SOURCE
3820
3821 add_host_cppflags -D_ISOC99_SOURCE
3822 check_host_cflags -std=c99
3823 check_host_cflags -Wall
3824 check_host_cflags $host_cflags_speed
3825
3826 check_64bit(){
3827     arch32=$1
3828     arch64=$2
3829     expr=$3
3830     check_code cc "" "int test[2*($expr) - 1]" &&
3831         subarch=$arch64 || subarch=$arch32
3832 }
3833
3834 case "$arch" in
3835     aarch64|alpha|ia64)
3836         spic=$shared
3837     ;;
3838     mips)
3839         check_64bit mips mips64 '_MIPS_SIM > 1'
3840         spic=$shared
3841     ;;
3842     parisc)
3843         check_64bit parisc parisc64 'sizeof(void *) > 4'
3844         spic=$shared
3845     ;;
3846     ppc)
3847         check_64bit ppc ppc64 'sizeof(void *) > 4'
3848         spic=$shared
3849     ;;
3850     s390)
3851         check_64bit s390 s390x 'sizeof(void *) > 4'
3852         spic=$shared
3853     ;;
3854     sparc)
3855         check_64bit sparc sparc64 'sizeof(void *) > 4'
3856         spic=$shared
3857     ;;
3858     x86)
3859         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3860         if test "$subarch" = "x86_64"; then
3861             spic=$shared
3862         fi
3863     ;;
3864 esac
3865
3866 enable $subarch
3867 enabled spic && enable_weak pic
3868
3869 enabled x86_64 && objformat=elf64 || objformat="elf32"
3870
3871 # OS specific
3872 case $target_os in
3873     aix)
3874         SHFLAGS=-shared
3875         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3876         enabled shared && add_ldflags -Wl,-brtl
3877         ;;
3878     android)
3879         disable symver
3880         enable section_data_rel_ro
3881         SLIB_INSTALL_NAME='$(SLIBNAME)'
3882         SLIB_INSTALL_LINKS=
3883         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3884         ;;
3885     haiku)
3886         prefix_default="/boot/common"
3887         network_extralibs="-lnetwork"
3888         host_extralibs=
3889         ;;
3890     sunos)
3891         SHFLAGS='-shared -Wl,-h,$$(@F)'
3892         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3893         network_extralibs="-lsocket -lnsl"
3894         # When using suncc to build, the Solaris linker will mark
3895         # an executable with each instruction set encountered by
3896         # the Solaris assembler.  As our libraries contain their own
3897         # guards for processor-specific code, instead suppress
3898         # generation of the HWCAPS ELF section on Solaris x86 only.
3899         enabled_all suncc x86 &&
3900             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3901             add_ldflags -Wl,-M,mapfile
3902         nm_default='nm -P -g'
3903         version_script='-M'
3904         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3905         ;;
3906     netbsd)
3907         disable symver
3908         oss_indev_extralibs="-lossaudio"
3909         oss_outdev_extralibs="-lossaudio"
3910         ;;
3911     openbsd|bitrig)
3912         disable symver
3913         SHFLAGS='-shared'
3914         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3915         SLIB_INSTALL_LINKS=
3916         oss_indev_extralibs="-lossaudio"
3917         oss_outdev_extralibs="-lossaudio"
3918         ;;
3919     dragonfly)
3920         disable symver
3921         ;;
3922     freebsd)
3923         ;;
3924     bsd/os)
3925         add_extralibs -lpoll -lgnugetopt
3926         ;;
3927     darwin)
3928         enabled ppc && add_asflags -force_cpusubtype_ALL
3929         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3930         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3931         add_ldflags -Wl,-dynamic,-search_paths_first
3932         check_cflags -Werror=partial-availability
3933         SLIBSUF=".dylib"
3934         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3935         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3936         enabled x86_64 && objformat="macho64" || objformat="macho32"
3937         enabled_any pic shared ||
3938             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3939         check_header dispatch/dispatch.h &&
3940             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3941         if test -n "$sysroot"; then
3942             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3943             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3944         fi
3945         ;;
3946     msys*)
3947         die "Native MSYS builds are discouraged, please use the MINGW environment."
3948         ;;
3949     mingw32*|mingw64*)
3950         target_os=mingw32
3951         LIBTARGET=i386
3952         if enabled x86_64; then
3953             LIBTARGET="i386:x86-64"
3954         fi
3955         if enabled shared; then
3956             # Cannot build both shared and static libs when using dllexport.
3957             disable static
3958         fi
3959         check_ldflags -Wl,--nxcompat
3960         check_ldflags -Wl,--dynamicbase
3961         shlibdir_default="$bindir_default"
3962         SLIBPREF=""
3963         SLIBSUF=".dll"
3964         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3965         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3966         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3967         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3968         SLIB_INSTALL_LINKS=
3969         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3970         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3971         SLIB_CREATE_DEF_CMD='ARCH="$(ARCH)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3972         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3973         enabled x86_64 && objformat="win64" || objformat="win32"
3974         dlltool="${cross_prefix}dlltool"
3975         ranlib=:
3976         enable dos_paths
3977         ;;
3978     win32|win64)
3979         disable symver
3980         if enabled shared; then
3981             # Link to the import library instead of the normal static library
3982             # for shared libs.
3983             LD_LIB='%.lib'
3984             # Cannot build both shared and static libs with MSVC or icl.
3985             disable static
3986         fi
3987         shlibdir_default="$bindir_default"
3988         SLIBPREF=""
3989         SLIBSUF=".dll"
3990         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3991         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3992         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3993         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3994         SLIB_INSTALL_LINKS=
3995         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3996         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3997         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3998         enabled x86_64 && objformat="win64" || objformat="win32"
3999         ranlib=:
4000         enable dos_paths
4001         ;;
4002     cygwin*)
4003         target_os=cygwin
4004         shlibdir_default="$bindir_default"
4005         SLIBPREF="cyg"
4006         SLIBSUF=".dll"
4007         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4008         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4009         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4010         SLIB_INSTALL_LINKS=
4011         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4012         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4013         enabled x86_64 && objformat="win64" || objformat="win32"
4014         enable dos_paths
4015         ;;
4016     *-dos|freedos|opendos)
4017         network_extralibs="-lsocket"
4018         objformat="coff"
4019         enable dos_paths
4020         add_cppflags -U__STRICT_ANSI__
4021         ;;
4022     linux)
4023         enable dv1394
4024         enable section_data_rel_ro
4025         ;;
4026     irix*)
4027         target_os=irix
4028         ranlib="echo ignoring ranlib"
4029         ;;
4030     os/2*)
4031         ln_s="cp -f"
4032         objformat="aout"
4033         add_cppflags -D_GNU_SOURCE
4034         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4035         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4036         LIBSUF="_s.a"
4037         SLIBPREF=""
4038         SLIBSUF=".dll"
4039         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4040         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4041         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4042             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4043             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4044             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4045             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4046         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4047             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4048         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4049         enable dos_paths
4050         ;;
4051     gnu/kfreebsd)
4052         add_cppflags -D_BSD_SOURCE
4053         ;;
4054     gnu)
4055         ;;
4056     qnx)
4057         add_cppflags -D_QNX_SOURCE
4058         network_extralibs="-lsocket"
4059         ;;
4060     symbian)
4061         SLIBSUF=".dll"
4062         enable dos_paths
4063         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4064         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4065         add_ldflags -Wl,--target1-abs,--no-undefined \
4066                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4067                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4068         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4069                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4070                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4071         ;;
4072     minix)
4073         ;;
4074     none)
4075         ;;
4076     *)
4077         die "Unknown OS '$target_os'."
4078         ;;
4079 esac
4080
4081 # determine libc flavour
4082
4083 probe_libc(){
4084     pfx=$1
4085     pfx_no_=${pfx%_}
4086     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4087     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4088         eval ${pfx}libc_type=uclibc
4089         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4090     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4091         eval ${pfx}libc_type=glibc
4092         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4093     # MinGW headers can be installed on Cygwin, so check for newlib first.
4094     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4095         eval ${pfx}libc_type=newlib
4096         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4097     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4098     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4099         eval ${pfx}libc_type=mingw64
4100         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4101         eval test \$${pfx_no_}cc_type = "gcc" &&
4102             add_${pfx}cppflags -D__printf__=__gnu_printf__
4103     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4104          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4105         eval ${pfx}libc_type=mingw32
4106         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4107             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4108             die "ERROR: MinGW32 runtime version must be >= 3.15."
4109         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4110         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4111             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4112         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4113             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4114         eval test \$${pfx_no_}cc_type = "gcc" &&
4115             add_${pfx}cppflags -D__printf__=__gnu_printf__
4116     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4117         eval ${pfx}libc_type=msvcrt
4118         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4119             if [ "$pfx" = host_ ]; then
4120                 add_host_cppflags -Dsnprintf=_snprintf
4121             else
4122                 add_compat strtod.o strtod=avpriv_strtod
4123                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4124                                              _snprintf=avpriv_snprintf  \
4125                                              vsnprintf=avpriv_vsnprintf
4126             fi
4127         fi
4128         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4129         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4130         # 0x601 by default unless something else is set by the user.
4131         # This can easily lead to us detecting functions only present
4132         # in such new versions and producing binaries requiring windows 7.0.
4133         # Therefore explicitly set the default to XP unless the user has
4134         # set something else on the command line.
4135         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4136         # family. For these cases, configure is free to use any functions
4137         # found in the SDK headers by default. (Alternatively, we could force
4138         # _WIN32_WINNT to 0x0602 in that case.)
4139         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4140             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4141 #ifdef WINAPI_FAMILY
4142 #include <winapifamily.h>
4143 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4144 #error not desktop
4145 #endif
4146 #endif
4147 EOF
4148         if [ "$pfx" = "" ]; then
4149             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4150         fi
4151     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4152         eval ${pfx}libc_type=klibc
4153     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4154         eval ${pfx}libc_type=bionic
4155     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4156         eval ${pfx}libc_type=solaris
4157         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4158     else
4159         eval ${pfx}libc_type=default
4160         add_${pfx}cppflags -D_DEFAULT_SOURCE
4161     fi
4162 }
4163
4164 probe_libc
4165 test -n "$libc_type" && enable libc_$libc_type
4166 probe_libc host_
4167 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4168
4169 # hacks for compiler/libc/os combinations
4170
4171 case $libc_type in
4172     bionic)
4173         add_compat strtod.o strtod=avpriv_strtod
4174         ;;
4175     glibc)
4176         if enabled tms470; then
4177             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4178             add_cppflags -D__USER_LABEL_PREFIX__=
4179             add_cppflags -D__builtin_memset=memset
4180             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4181             add_cflags   -pds=48    # incompatible redefinition of macro
4182         fi
4183         ;;
4184 esac
4185
4186 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4187     add_cppflags '-I\$(SRC_PATH)/compat/float'
4188
4189 esc(){
4190     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4191 }
4192
4193 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4194
4195 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4196
4197 set_default $PATHS_LIST
4198 set_default nm
4199
4200 # we need to build at least one lib type
4201 if ! enabled_any static shared; then
4202     cat <<EOF
4203 At least one library type must be built.
4204 Specify --enable-static to build the static libraries or --enable-shared to
4205 build the shared libraries as well. To only build the shared libraries specify
4206 --disable-static in addition to --enable-shared.
4207 EOF
4208     exit 1
4209 fi
4210
4211 disabled optimizations || check_cflags -fomit-frame-pointer
4212
4213 enable_weak_pic() {
4214     disabled pic && return
4215     enable pic
4216     add_cppflags -DPIC
4217     case "$target_os" in
4218     mingw*|cygwin*)
4219         ;;
4220     *)
4221         add_cflags -fPIC
4222         ;;
4223     esac
4224     add_asflags  -fPIC
4225 }
4226
4227 enabled pic && enable_weak_pic
4228
4229 check_cc <<EOF || die "Symbol mangling check failed."
4230 int ff_extern;
4231 EOF
4232 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4233 extern_prefix=${sym%%ff_extern*}
4234
4235 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4236
4237 _restrict=
4238 for restrict_keyword in restrict __restrict__ __restrict; do
4239     check_cc <<EOF && _restrict=$restrict_keyword && break
4240 void foo(char * $restrict_keyword p);
4241 EOF
4242 done
4243
4244 check_cc <<EOF && enable pragma_deprecated
4245 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4246 EOF
4247
4248 check_cc <<EOF || die "endian test failed"
4249 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4250 EOF
4251 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4252
4253 check_gas() {
4254     log "check_gas using '$as' as AS"
4255     # :vararg is used on aarch64, arm and ppc altivec
4256     check_as <<EOF || return 1
4257 .macro m n, y:vararg=0
4258 \n: .int \y
4259 .endm
4260 m x
4261 EOF
4262     # .altmacro is only used in arm asm
4263     ! enabled arm || check_as <<EOF || return 1
4264 .altmacro
4265 EOF
4266     enable gnu_as
4267     return 0
4268 }
4269
4270 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4271     nogas=:
4272     enabled_any arm aarch64 && nogas=die
4273     enabled_all ppc altivec && nogas=warn
4274     as_noop=-v
4275
4276     case $as_type in
4277         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4278         gcc)  gaspp_as_type=gas ;;
4279         *)    gaspp_as_type=$as_type ;;
4280     esac
4281
4282     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4283
4284     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4285         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4286
4287     if ! check_gas ; then
4288         as=${gas:=$as}
4289         check_gas || \
4290             $nogas "GNU assembler not found, install/update gas-preprocessor"
4291     fi
4292
4293     check_as <<EOF && enable as_func
4294 .func test
4295 .endfunc
4296 EOF
4297 fi
4298
4299 check_inline_asm inline_asm_labels '"1:\n"'
4300
4301 if enabled aarch64; then
4302     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4303     # internal assembler in clang 3.3 does not support this instruction
4304     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4305     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4306
4307     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4308
4309 elif enabled alpha; then
4310
4311     check_cflags -mieee
4312
4313 elif enabled arm; then
4314
4315     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4316     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4317     enabled thumb && check_cflags -mthumb || check_cflags -marm
4318
4319     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4320         enable vfp_args
4321     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4322         enable vfp_args
4323     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4324         case "${cross_prefix:-$cc}" in
4325             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4326             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4327 __asm__ (".eabi_attribute 28, 1");
4328 int main(void) { return 0; }
4329 EOF
4330         esac
4331         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4332     fi
4333
4334     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4335     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4336     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4337     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4338     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4339     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4340
4341     [ $target_os = linux ] || [ $target_os = android ] ||
4342         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4343             $ARCH_EXT_LIST_ARM
4344
4345     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4346
4347     check_as <<EOF && enable as_arch_directive
4348 .arch armv7-a
4349 EOF
4350     check_as <<EOF && enable as_fpu_directive
4351 .fpu neon
4352 EOF
4353
4354     # llvm's integrated assembler supports .object_arch from llvm 3.5
4355     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4356         check_as <<EOF && enable as_object_arch
4357 .object_arch armv4
4358 EOF
4359
4360     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4361
4362 elif enabled mips; then
4363
4364     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4365
4366     # make sure that only an instruction set is enabled
4367     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4368
4369     if enabled mips64; then
4370         check_inline_asm mips64r6 '"dlsa $0