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

   1 #!/bin/sh
   2 #
   3 # Libav configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken Libav."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --prefix=PREFIX          install in PREFIX [$prefix_default]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
  91
  92 Licensing options:
  93   --enable-gpl             allow use of GPL code, the resulting libs
  94                            and binaries will be under GPL [no]
  95   --enable-version3        upgrade (L)GPL to version 3 [no]
  96   --enable-nonfree         allow use of nonfree code, the resulting libs
  97                            and binaries will be unredistributable [no]
  98
  99 Configuration options:
 100   --disable-static         do not build static libraries [no]
 101   --enable-shared          build shared libraries [no]
 102   --enable-small           optimize for size instead of speed
 103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
 104   --enable-gray            enable full grayscale support (slower color)
 105   --disable-swscale-alpha  disable alpha channel support in swscale
 106   --disable-all            disable building components, libraries and programs
 107
 108 Program options:
 109   --disable-programs       do not build command line programs
 110   --disable-avconv         disable avconv build
 111   --disable-avplay         disable avplay build
 112   --disable-avprobe        disable avprobe build
 113   --disable-avserver       deprecated, does nothing
 114
 115 Component options:
 116   --disable-doc            do not build documentation
 117   --disable-pod2man        do not build manual pages
 118   --disable-texi2html      do not build HTML documentation
 119   --disable-avdevice       disable libavdevice build
 120   --disable-avcodec        disable libavcodec build
 121   --disable-avformat       disable libavformat build
 122   --disable-avutil         disable libavutil build
 123   --disable-swscale        disable libswscale build
 124   --disable-avfilter       disable video filter support [no]
 125   --disable-avresample     disable libavresample build [no]
 126   --disable-pthreads       disable pthreads [auto]
 127   --disable-w32threads     disable Win32 threads [auto]
 128   --disable-network        disable network support [no]
 129   --disable-dct            disable DCT code
 130   --disable-error-resilience disable error resilience code
 131   --disable-lsp            disable LSP code
 132   --disable-lzo            disable LZO decoder code
 133   --disable-mdct           disable MDCT code
 134   --disable-rdft           disable RDFT code
 135   --disable-fft            disable FFT code
 136   --disable-faan           disable floating point AAN (I)DCT code
 137
 138 Individual component options:
 139   --disable-everything     disable all components listed below
 140   --disable-encoder=NAME   disable encoder NAME
 141   --enable-encoder=NAME    enable encoder NAME
 142   --disable-encoders       disable all encoders
 143   --disable-decoder=NAME   disable decoder NAME
 144   --enable-decoder=NAME    enable decoder NAME
 145   --disable-decoders       disable all decoders
 146   --disable-hwaccel=NAME   disable hwaccel NAME
 147   --enable-hwaccel=NAME    enable hwaccel NAME
 148   --disable-hwaccels       disable all hwaccels
 149   --disable-muxer=NAME     disable muxer NAME
 150   --enable-muxer=NAME      enable muxer NAME
 151   --disable-muxers         disable all muxers
 152   --disable-demuxer=NAME   disable demuxer NAME
 153   --enable-demuxer=NAME    enable demuxer NAME
 154   --disable-demuxers       disable all demuxers
 155   --enable-parser=NAME     enable parser NAME
 156   --disable-parser=NAME    disable parser NAME
 157   --disable-parsers        disable all parsers
 158   --enable-bsf=NAME        enable bitstream filter NAME
 159   --disable-bsf=NAME       disable bitstream filter NAME
 160   --disable-bsfs           disable all bitstream filters
 161   --enable-protocol=NAME   enable protocol NAME
 162   --disable-protocol=NAME  disable protocol NAME
 163   --disable-protocols      disable all protocols
 164   --enable-indev=NAME      enable input device NAME
 165   --disable-indev=NAME     disable input device NAME
 166   --disable-indevs         disable input devices
 167   --enable-outdev=NAME     enable output device NAME
 168   --disable-outdev=NAME    disable output device NAME
 169   --disable-outdevs        disable output devices
 170   --disable-devices        disable all devices
 171   --enable-filter=NAME     enable filter NAME
 172   --disable-filter=NAME    disable filter NAME
 173   --disable-filters        disable all filters
 174
 175 External library support:
 176
 177   Using any of the following switches will allow Libav to link to the
 178   corresponding external library. All the components depending on that library
 179   will become enabled, if all their other dependencies are met and they are not
 180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 181   libwavpack and allow the libwavpack encoder to be built, unless it is
 182   specifically disabled with --disable-encoder=libwavpack.
 183
 184   Note that only the system libraries are auto-detected. All the other external
 185   libraries must be explicitly enabled.
 186
 187   Also note that the following help text describes the purpose of the libraries
 188   themselves, not all their features will necessarily be usable by Libav.
 189
 190   --enable-avisynth          video frameserver
 191   --enable-avxsynth          Linux version of AviSynth
 192   --enable-bzlib             bzip2 compression [autodetect]
 193   --enable-frei0r            video filtering plugins
 194   --enable-gnutls            crypto
 195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
 196   --enable-libcdio           audio CD input
 197   --enable-libdc1394         IEEE 1394/Firewire camera input
 198   --enable-libdcadec         DCA audio decoding
 199   --enable-libfaac           AAC audio encoding
 200   --enable-libfdk-aac        AAC audio encoding/decoding
 201   --enable-libfontconfig     font configuration and management
 202   --enable-libfreetype       font rendering
 203   --enable-libgsm            GSM audio encoding/decoding
 204   --enable-libhdcd           HDCD decoding filter
 205   --enable-libilbc           ILBC audio encoding/decoding
 206   --enable-libjack           JACK audio sound server
 207   --enable-libkvazaar        HEVC video encoding
 208   --enable-libmp3lame        MP3 audio encoding
 209   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
 210   --enable-libopencore-amrwb AMR-WB audio decoding
 211   --enable-libopencv         computer vision
 212   --enable-libopenh264       H.264 video encoding/decoding
 213   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
 214   --enable-libopus           Opus audio encoding/decoding
 215   --enable-libpulse          Pulseaudio sound server
 216   --enable-librtmp           RTMP streaming
 217   --enable-libschroedinger   Dirac video encoding/decoding
 218   --enable-libsnappy         snappy compression
 219   --enable-libspeex          Speex audio encoding/decoding
 220   --enable-libtheora         Theora video encoding/decoding
 221   --enable-libtwolame        MP2 audio encoding
 222   --enable-libvo-aacenc      AAC audio encoding
 223   --enable-libvo-amrwbenc    AMR-WB audio encoding
 224   --enable-libvorbis         Vorbis audio encoding/decoding
 225   --enable-libvpx            VP* video encoding/decoding
 226   --enable-libwavpack        Wavpack audio encoding/decoding
 227   --enable-libwebp           WebP image encoding/decoding
 228   --enable-libx264           H.264 video encoding
 229   --enable-libx265           HEVC video encoding
 230   --enable-libxavs           Chinese AVS video encoding
 231   --enable-libxcb            X window system protocol communication
 232   --enable-libxcb-shm        X11 shm communication [auto]
 233   --enable-libxcb-xfixes     X11 mouse rendering [auto]
 234   --enable-libxvid           MPEG-4 ASP video encoding
 235   --enable-openssl           crypto
 236   --enable-zlib              compression [autodetect]
 237
 238   The following libraries provide various hardware acceleration features:
 239   --enable-cuda    Nvidia CUDA (dynamically linked)
 240   --enable-cuvid   Nvidia CUVID video decode acceleration
 241   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
 242   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
 243   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
 244   --enable-libnpp  Nvidia CUDA processing
 245   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
 246   --enable-nvenc   Nvidia video encoding
 247   --enable-omx     OpenMAX IL
 248   --enable-omx-rpi OpenMAX IL for Raspberry Pi
 249   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
 250   --enable-vda     Apple Video Decode Acceleration [auto]
 251   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
 252
 253 Toolchain options:
 254   --arch=ARCH              select architecture [$arch]
 255   --cpu=CPU                select the minimum required CPU (affects
 256                            instruction selection, may crash on older CPUs)
 257   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 258   --enable-cross-compile   assume a cross-compiler is used
 259   --sysroot=PATH           root of cross-build tree
 260   --sysinclude=PATH        location of cross-build system headers
 261   --target-os=OS           compiler targets OS [$target_os]
 262   --target-exec=CMD        command to run executables on target
 263   --target-path=DIR        path to view of build directory on target
 264   --target-samples=DIR     path to samples directory on target
 265   --toolchain=NAME         set tool defaults according to NAME
 266   --nm=NM                  use nm tool
 267   --ar=AR                  use archive tool AR [$ar_default]
 268   --as=AS                  use assembler AS [$as_default]
 269   --cc=CC                  use C compiler CC [$cc_default]
 270   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 271   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 272   --ld=LD                  use linker LD
 273   --x86asmexe=X86ASM       use x86 assembler X86ASM
 274   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 275   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 276   --host-cc=HOSTCC         use host C compiler HOSTCC
 277   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 278   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 279   --host-ld=HOSTLD         use host linker HOSTLD
 280   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 281   --host-libs=HLIBS        use libs HLIBS when linking for host
 282   --host-os=OS             compiler host OS [$target_os]
 283   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 284   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 285   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 286   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 287   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 288   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 289   --extra-version=STRING   version string suffix []
 290   --optflags=OPTFLAGS      override optimization-related compiler flags
 291   --enable-pic             build position-independent code
 292   --enable-thumb           compile for Thumb instruction set
 293   --enable-lto             use link-time optimization
 294   --env="ENV=override"     override the environment variables
 295
 296 Advanced options (experts only):
 297   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 298   --custom-allocator=NAME  use a supported custom allocator
 299   --disable-symver         disable symbol versioning
 300   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 301   --disable-safe-bitstream-reader
 302                            disable buffer boundary checking in bitreaders
 303                            (faster, but may crash)
 304   --enable-sram            allow use of on-chip SRAM
 305
 306 Optimization options (experts only):
 307   --disable-asm            disable all assembly optimizations
 308   --disable-altivec        disable AltiVec optimizations
 309   --disable-vsx            disable VSX optimizations
 310   --disable-power8         disable POWER8 optimizations
 311   --disable-amd3dnow       disable 3DNow! optimizations
 312   --disable-amd3dnowext    disable 3DNow! extended optimizations
 313   --disable-mmx            disable MMX optimizations
 314   --disable-mmxext         disable MMXEXT optimizations
 315   --disable-sse            disable SSE optimizations
 316   --disable-sse2           disable SSE2 optimizations
 317   --disable-sse3           disable SSE3 optimizations
 318   --disable-ssse3          disable SSSE3 optimizations
 319   --disable-sse4           disable SSE4 optimizations
 320   --disable-sse42          disable SSE4.2 optimizations
 321   --disable-avx            disable AVX optimizations
 322   --disable-xop            disable XOP optimizations
 323   --disable-fma3           disable FMA3 optimizations
 324   --disable-fma4           disable FMA4 optimizations
 325   --disable-avx2           disable AVX2 optimizations
 326   --disable-armv5te        disable armv5te optimizations
 327   --disable-armv6          disable armv6 optimizations
 328   --disable-armv6t2        disable armv6t2 optimizations
 329   --disable-vfp            disable VFP optimizations
 330   --disable-neon           disable NEON optimizations
 331   --disable-inline-asm     disable use of inline assembly
 332   --disable-x86asm         disable use of standalone x86 assembly
 333
 334 Developer options (useful when working on Libav itself):
 335   --disable-debug          disable debugging symbols
 336   --enable-debug=LEVEL     set the debug level [$debuglevel]
 337   --disable-optimizations  disable compiler optimizations
 338   --enable-extra-warnings  enable more compiler warnings
 339   --samples=PATH           location of test samples for FATE, if not set use
 340                            \$LIBAV_SAMPLES at make invocation time.
 341   --enable-neon-clobber-test check NEON registers for clobbering (should be
 342                            used only for debugging purposes)
 343   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 344                            should be used only for debugging purposes)
 345   --enable-random          randomly enable/disable components
 346   --disable-random
 347   --enable-random=LIST     randomly enable/disable specific components or
 348   --disable-random=LIST    component groups. LIST is a comma-separated list
 349                            of NAME[:PROB] entries where NAME is a component
 350                            (group) and PROB the probability associated with
 351                            NAME (default 0.5).
 352   --random-seed=VALUE      seed value for --enable/disable-random
 353   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 354                            (only applies to --disable-optimizations builds)
 355   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 356                            in the name) of tests whose result is ignored
 357
 358 NOTE: Object files are built at the place where configure is launched.
 359 EOF
 360   exit 0
 361 }
 362
 363 quotes='""'
 364
 365 log(){
 366     echo "$@" >> $logfile
 367 }
 368
 369 log_file(){
 370     log BEGIN $1
 371     i=1
 372     while read line; do
 373         printf '%5s   %s\n' "${i}" "${line}"
 374         i=$(($i+1))
 375     done < $1 >> $logfile
 376     log END $1
 377 }
 378
 379 echolog(){
 380     log "$@"
 381     echo "$@"
 382 }
 383
 384 warn(){
 385     log "WARNING: $*"
 386     WARNINGS="${WARNINGS}WARNING: $*\n"
 387 }
 388
 389 die(){
 390     echolog "$@"
 391     cat <<EOF
 392
 393 If you think configure made a mistake, make sure you are using the latest
 394 version from Git.  If the latest version fails, report the problem to the
 395 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 396 EOF
 397     if disabled logging; then
 398         cat <<EOF
 399 Rerun configure with logging enabled (do not use --disable-logging), and
 400 include the log this produces with your report.
 401 EOF
 402     else
 403         cat <<EOF
 404 Include the log file "$logfile" produced by configure as this will help
 405 solving the problem.
 406 EOF
 407     fi
 408     exit 1
 409 }
 410
 411 # Avoid locale weirdness, besides we really just want to translate ASCII.
 412 toupper(){
 413     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 414 }
 415
 416 tolower(){
 417     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 418 }
 419
 420 c_escape(){
 421     echo "$*" | sed 's/["\\]/\\\0/g'
 422 }
 423
 424 sh_quote(){
 425     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 426     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 427     echo "$v"
 428 }
 429
 430 cleanws(){
 431     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 432 }
 433
 434 filter(){
 435     pat=$1
 436     shift
 437     for v; do
 438         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 439     done
 440 }
 441
 442 filter_out(){
 443     pat=$1
 444     shift
 445     for v; do
 446         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 447     done
 448 }
 449
 450 map(){
 451     m=$1
 452     shift
 453     for v; do eval $m; done
 454 }
 455
 456 add_suffix(){
 457     suffix=$1
 458     shift
 459     for v; do echo ${v}${suffix}; done
 460 }
 461
 462 set_all(){
 463     value=$1
 464     shift
 465     for var in $*; do
 466         eval $var=$value
 467     done
 468 }
 469
 470 set_weak(){
 471     value=$1
 472     shift
 473     for var; do
 474         eval : \${$var:=$value}
 475     done
 476 }
 477
 478 sanitize_var_name(){
 479     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 480 }
 481
 482 set_sanitized(){
 483     var=$1
 484     shift
 485     eval $(sanitize_var_name "$var")='$*'
 486 }
 487
 488 get_sanitized(){
 489     eval echo \$$(sanitize_var_name "$1")
 490 }
 491
 492 pushvar(){
 493     for pvar in $*; do
 494         eval level=\${${pvar}_level:=0}
 495         eval ${pvar}_${level}="\$$pvar"
 496         eval ${pvar}_level=$(($level+1))
 497     done
 498 }
 499
 500 popvar(){
 501     for pvar in $*; do
 502         eval level=\${${pvar}_level:-0}
 503         test $level = 0 && continue
 504         eval level=$(($level-1))
 505         eval $pvar="\${${pvar}_${level}}"
 506         eval ${pvar}_level=$level
 507         eval unset ${pvar}_${level}
 508     done
 509 }
 510
 511 enable(){
 512     set_all yes $*
 513 }
 514
 515 disable(){
 516     set_all no $*
 517 }
 518
 519 enable_weak(){
 520     set_weak yes $*
 521 }
 522
 523 disable_weak(){
 524     set_weak no $*
 525 }
 526
 527 enable_sanitized(){
 528     for var; do
 529         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 530     done
 531 }
 532
 533 disable_sanitized(){
 534     for var; do
 535         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 536     done
 537 }
 538
 539 do_enable_deep(){
 540     for var; do
 541         enabled $var && continue
 542         eval sel="\$${var}_select"
 543         eval sgs="\$${var}_suggest"
 544         pushvar var sgs
 545         enable_deep $sel
 546         popvar sgs
 547         enable_deep_weak $sgs
 548         popvar var
 549     done
 550 }
 551
 552 enable_deep(){
 553     do_enable_deep $*
 554     enable $*
 555 }
 556
 557 enable_deep_weak(){
 558     for var; do
 559         disabled $var && continue
 560         pushvar var
 561         do_enable_deep $var
 562         popvar var
 563         enable_weak $var
 564     done
 565 }
 566
 567 enabled(){
 568     test "${1#!}" = "$1" && op== || op=!=
 569     eval test "x\$${1#!}" $op "xyes"
 570 }
 571
 572 disabled(){
 573     test "${1#!}" = "$1" && op== || op=!=
 574     eval test "x\$${1#!}" $op "xno"
 575 }
 576
 577 enabled_all(){
 578     for opt; do
 579         enabled $opt || return 1
 580     done
 581 }
 582
 583 disabled_all(){
 584     for opt; do
 585         disabled $opt || return 1
 586     done
 587 }
 588
 589 enabled_any(){
 590     for opt; do
 591         enabled $opt && return 0
 592     done
 593 }
 594
 595 disabled_any(){
 596     for opt; do
 597         disabled $opt && return 0
 598     done
 599     return 1
 600 }
 601
 602 set_default(){
 603     for opt; do
 604         eval : \${$opt:=\$${opt}_default}
 605     done
 606 }
 607
 608 is_in(){
 609     value=$1
 610     shift
 611     for var in $*; do
 612         [ $var = $value ] && return 0
 613     done
 614     return 1
 615 }
 616
 617 check_deps(){
 618     for cfg; do
 619         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 620         disabled ${cfg}_checking && continue
 621         enable ${cfg}_checking
 622
 623         eval dep_all="\$${cfg}_deps"
 624         eval dep_any="\$${cfg}_deps_any"
 625         eval dep_con="\$${cfg}_conflict"
 626         eval dep_sel="\$${cfg}_select"
 627         eval dep_sgs="\$${cfg}_suggest"
 628         eval dep_ifa="\$${cfg}_if"
 629         eval dep_ifn="\$${cfg}_if_any"
 630
 631         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 632         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 633         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 634
 635         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 636         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 637         enabled_all  $dep_all || disable $cfg
 638         enabled_any  $dep_any || disable $cfg
 639         disabled_all $dep_con || disable $cfg
 640         disabled_any $dep_sel && disable $cfg
 641
 642         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 643
 644         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 645             # filter out library deps, these do not belong in extralibs
 646             is_in $dep $LIBRARY_LIST && continue
 647             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 648         done
 649
 650         disable ${cfg}_checking
 651     done
 652 }
 653
 654 print_config(){
 655     pfx=$1
 656     files=$2
 657     shift 2
 658     map 'eval echo "$v \${$v:-no}"' "$@" |
 659     awk "BEGIN { split(\"$files\", files) }
 660         {
 661             c = \"$pfx\" toupper(\$1);
 662             v = \$2;
 663             sub(/yes/, 1, v);
 664             sub(/no/,  0, v);
 665             for (f in files) {
 666                 file = files[f];
 667                 if (file ~ /\\.h\$/) {
 668                     printf(\"#define %s %d\\n\", c, v) >>file;
 669                 } else if (file ~ /\\.asm\$/) {
 670                     printf(\"%%define %s %d\\n\", c, v) >>file;
 671                 } else if (file ~ /\\.mak\$/) {
 672                     n = -v ? \"\" : \"!\";
 673                     printf(\"%s%s=yes\\n\", n, c) >>file;
 674                 }
 675             }
 676         }"
 677 }
 678
 679 print_enabled(){
 680     suf=$1
 681     shift
 682     for v; do
 683         enabled $v && printf "%s\n" ${v%$suf}
 684     done
 685 }
 686
 687 append(){
 688     var=$1
 689     shift
 690     eval "$var=\"\$$var $*\""
 691 }
 692
 693 prepend(){
 694     var=$1
 695     shift
 696     eval "$var=\"$* \$$var\""
 697 }
 698
 699 unique(){
 700     var=$1
 701     uniq_list=""
 702     for tok in $(eval echo \$$var); do
 703         uniq_list="$(filter_out $tok $uniq_list) $tok"
 704     done
 705     eval "$var=\"${uniq_list}\""
 706 }
 707
 708 resolve(){
 709     var=$1
 710     tmpvar=
 711     for entry in $(eval echo \$$var); do
 712         tmpvar="$tmpvar $(eval echo \$${entry})"
 713     done
 714     eval "$var=\"${tmpvar}\""
 715 }
 716
 717 add_cppflags(){
 718     append CPPFLAGS "$@"
 719 }
 720
 721 add_cflags(){
 722     append CFLAGS $($cflags_filter "$@")
 723 }
 724
 725 add_cflags_headers(){
 726     append CFLAGS_HEADERS $($cflags_filter "$@")
 727 }
 728
 729 add_asflags(){
 730     append ASFLAGS $($asflags_filter "$@")
 731 }
 732
 733 add_objcflags(){
 734     append OBJCFLAGS $($objcflags_filter "$@")
 735 }
 736
 737 add_ldflags(){
 738     append LDFLAGS $($ldflags_filter "$@")
 739 }
 740
 741 add_ldexeflags(){
 742     append LDEXEFLAGS $($ldflags_filter "$@")
 743 }
 744
 745 add_ldsoflags(){
 746     append LDSOFLAGS $($ldflags_filter "$@")
 747 }
 748
 749 add_stripflags(){
 750     append STRIPFLAGS "$@"
 751 }
 752
 753 add_extralibs(){
 754     prepend extralibs $($ldflags_filter "$@")
 755 }
 756
 757 add_host_cppflags(){
 758     append host_cppflags "$@"
 759 }
 760
 761 add_host_cflags(){
 762     append host_cflags $($host_cflags_filter "$@")
 763 }
 764
 765 add_host_ldflags(){
 766     append host_ldflags $($host_ldflags_filter "$@")
 767 }
 768
 769 add_compat(){
 770     append compat_objs $1
 771     shift
 772     map 'add_cppflags -D$v' "$@"
 773 }
 774
 775 check_cmd(){
 776     log "$@"
 777     "$@" >> $logfile 2>&1
 778 }
 779
 780 cc_o(){
 781     eval printf '%s\\n' $CC_O
 782 }
 783
 784 cc_e(){
 785     eval printf '%s\\n' $CC_E
 786 }
 787
 788 check_cc(){
 789     log check_cc "$@"
 790     cat > $TMPC
 791     log_file $TMPC
 792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 793 }
 794
 795 check_objcc(){
 796     log check_objcc "$@"
 797     cat > $TMPC
 798     log_file $TMPC
 799     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
 800 }
 801
 802 check_cpp(){
 803     log check_cpp "$@"
 804     cat > $TMPC
 805     log_file $TMPC
 806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 807 }
 808
 809 as_o(){
 810     eval printf '%s\\n' $AS_O
 811 }
 812
 813 check_as(){
 814     log check_as "$@"
 815     cat > $TMPS
 816     log_file $TMPS
 817     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 818 }
 819
 820 check_inline_asm(){
 821     log check_inline_asm "$@"
 822     name="$1"
 823     code="$2"
 824     shift 2
 825     disable $name
 826     check_cc "$@" <<EOF && enable $name
 827 void foo(void){ __asm__ volatile($code); }
 828 EOF
 829 }
 830
 831 check_insn(){
 832     log check_insn "$@"
 833     check_inline_asm ${1}_inline "\"$2\""
 834     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 835 }
 836
 837 check_x86asm(){
 838     log check_x86asm "$@"
 839     echo "$1" > $TMPS
 840     log_file $TMPS
 841     shift 1
 842     check_cmd $x86asmexe $X86ASMFLAGS "$@" -o $TMPO $TMPS
 843 }
 844
 845 ld_o(){
 846     eval printf '%s\\n' $LD_O
 847 }
 848
 849 check_ld(){
 850     log check_ld "$@"
 851     flags=$(filter_out '-l*' "$@")
 852     libs=$(filter '-l*' "$@")
 853     check_cc $($cflags_filter $flags) || return
 854     flags=$($ldflags_filter $flags)
 855     libs=$($ldflags_filter $libs)
 856     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 857 }
 858
 859 print_include(){
 860     hdr=$1
 861     test "${hdr%.h}" = "${hdr}" &&
 862         echo "#include $hdr"    ||
 863         echo "#include <$hdr>"
 864 }
 865
 866 check_code(){
 867     log check_code "$@"
 868     check=$1
 869     headers=$2
 870     code=$3
 871     shift 3
 872     {
 873         for hdr in $headers; do
 874             print_include $hdr
 875         done
 876         echo "int main(void) { $code; return 0; }"
 877     } | check_$check "$@"
 878 }
 879
 880 check_cppflags(){
 881     log check_cppflags "$@"
 882     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
 883 #include <stdlib.h>;
 884 EOF
 885 }
 886
 887 test_cflags(){
 888     log test_cflags "$@"
 889     set -- $($cflags_filter "$@")
 890     check_cc "$@" <<EOF
 891 int x;
 892 EOF
 893 }
 894
 895 check_cflags(){
 896     log check_cflags "$@"
 897     test_cflags "$@" && add_cflags "$@"
 898 }
 899
 900 test_objcflags(){
 901     log test_objcflags "$@"
 902     set -- $($objcflags_filter "$@")
 903     check_objcc "$@" <<EOF
 904 int x;
 905 EOF
 906 }
 907
 908 check_objcflags(){
 909     log check_objcflags "$@"
 910     test_objcflags "$@" && add_objcflags "$@"
 911 }
 912
 913 test_ldflags(){
 914     log test_ldflags "$@"
 915     check_ld "$@" <<EOF
 916 int main(void){ return 0; }
 917 EOF
 918 }
 919
 920 check_ldflags(){
 921     log check_ldflags "$@"
 922     test_ldflags "$@" && add_ldflags "$@"
 923 }
 924
 925 test_stripflags(){
 926     log test_stripflags "$@"
 927     # call check_cc to get a fresh TMPO
 928     check_cc <<EOF
 929 int main(void) { return 0; }
 930 EOF
 931     check_cmd $strip $STRIPFLAGS "$@" $TMPO
 932 }
 933
 934 check_stripflags(){
 935     log check_stripflags "$@"
 936     test_stripflags "$@" && add_stripflags "$@"
 937 }
 938
 939 check_header(){
 940     log check_header "$@"
 941     header=$1
 942     shift
 943     disable_sanitized $header
 944     check_cpp "$@" <<EOF && enable_sanitized $header
 945 #include <$header>
 946 int x;
 947 EOF
 948 }
 949
 950 check_func(){
 951     log check_func "$@"
 952     func=$1
 953     shift
 954     disable $func
 955     check_ld "$@" <<EOF && enable $func
 956 extern int $func();
 957 int main(void){ $func(); }
 958 EOF
 959 }
 960
 961 check_mathfunc(){
 962     log check_mathfunc "$@"
 963     func=$1
 964     narg=$2
 965     shift 2
 966     test $narg = 2 && args="f, g" || args="f"
 967     disable $func
 968     check_ld "$@" <<EOF && enable $func
 969 #include <math.h>
 970 float foo(float f, float g) { return $func($args); }
 971 int main(void){ return 0; }
 972 EOF
 973 }
 974
 975 check_func_headers(){
 976     log check_func_headers "$@"
 977     headers=$1
 978     funcs=$2
 979     shift 2
 980     {
 981         for hdr in $headers; do
 982             print_include $hdr
 983         done
 984         for func in $funcs; do
 985             echo "long check_$func(void) { return (long) $func; }"
 986         done
 987         echo "int main(void) { return 0; }"
 988     } | check_ld "$@" && enable $funcs && enable_sanitized $headers
 989 }
 990
 991 check_cpp_condition(){
 992     log check_cpp_condition "$@"
 993     header=$1
 994     condition=$2
 995     shift 2
 996     check_cpp "$@" <<EOF
 997 #include <$header>
 998 #if !($condition)
 999 #error "unsatisfied condition: $condition"
1000 #endif
1001 EOF
1002 }
1003
1004 test_cflags_cpp(){
1005     log test_cflags_cpp "$@"
1006     flags=$1
1007     condition=$2
1008     shift 2
1009     set -- $($cflags_filter "$flags")
1010     check_cpp "$@" <<EOF
1011 #if !($condition)
1012 #error "unsatisfied condition: $condition"
1013 #endif
1014 EOF
1015 }
1016
1017 check_lib(){
1018     log check_lib "$@"
1019     name="$1"
1020     headers="$2"
1021     funcs="$3"
1022     shift 3
1023     disable $name
1024     check_func_headers "$headers" "$funcs" "$@" &&
1025         enable $name && eval ${name}_extralibs="\$@"
1026 }
1027
1028 check_pkg_config(){
1029     log check_pkg_config "$@"
1030     name="$1"
1031     pkg_version="$2"
1032     pkg="${2%% *}"
1033     headers="$3"
1034     funcs="$4"
1035     shift 4
1036     disable $name
1037     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1038     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1039     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1040     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1041         enable $name &&
1042         add_cflags    "$pkg_cflags" &&
1043         eval $(sanitize_var_name ${name}_extralibs)="\$pkg_libs"
1044 }
1045
1046 check_exec(){
1047     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1048 }
1049
1050 check_exec_crash(){
1051     log check_exec_crash "$@"
1052     code=$(cat)
1053
1054     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1055     # are safe but may not be available everywhere.  Thus we use
1056     # raise(SIGTERM) instead.  The check is run in a subshell so we
1057     # can redirect the "Terminated" message from the shell.  SIGBUS
1058     # is not defined by standard C so it is used conditionally.
1059
1060     (check_exec "$@") >> $logfile 2>&1 <<EOF
1061 #include <signal.h>
1062 static void sighandler(int sig){
1063     raise(SIGTERM);
1064 }
1065 int foo(void){
1066     $code
1067 }
1068 int (*func_ptr)(void) = foo;
1069 int main(void){
1070     signal(SIGILL, sighandler);
1071     signal(SIGFPE, sighandler);
1072     signal(SIGSEGV, sighandler);
1073 #ifdef SIGBUS
1074     signal(SIGBUS, sighandler);
1075 #endif
1076     return func_ptr();
1077 }
1078 EOF
1079 }
1080
1081 check_type(){
1082     log check_type "$@"
1083     headers=$1
1084     type=$2
1085     shift 2
1086     disable_sanitized "$type"
1087     check_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1088 }
1089
1090 check_struct(){
1091     log check_struct "$@"
1092     headers=$1
1093     struct=$2
1094     member=$3
1095     shift 3
1096     disable_sanitized "${struct}_${member}"
1097     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1098         enable_sanitized "${struct}_${member}"
1099 }
1100
1101 check_builtin(){
1102     log check_builtin "$@"
1103     name=$1
1104     headers=$2
1105     builtin=$3
1106     shift 3
1107     disable "$name"
1108     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1109 }
1110
1111 check_compile_assert(){
1112     log check_compile_assert "$@"
1113     name=$1
1114     headers=$2
1115     condition=$3
1116     shift 3
1117     disable "$name"
1118     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1119 }
1120
1121 require(){
1122     log require "$@"
1123     name_version="$1"
1124     name="${1%% *}"
1125     headers="$2"
1126     func="$3"
1127     shift 3
1128     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1129 }
1130
1131 require_header(){
1132     log require "$@"
1133     header="$1"
1134     shift
1135     check_header "$header" "$@" || die "ERROR: $header not found"
1136 }
1137
1138 require_cpp_condition(){
1139     log require "$@"
1140     header="$1"
1141     condition="$2"
1142     shift 2
1143     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1144 }
1145
1146 require_pkg_config(){
1147     log require_pkg_config "$@"
1148     pkg_version="$2"
1149     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1150 }
1151
1152 hostcc_e(){
1153     eval printf '%s\\n' $HOSTCC_E
1154 }
1155
1156 hostcc_o(){
1157     eval printf '%s\\n' $HOSTCC_O
1158 }
1159
1160 check_host_cc(){
1161     log check_host_cc "$@"
1162     cat > $TMPC
1163     log_file $TMPC
1164     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1165 }
1166
1167 check_host_cpp(){
1168     log check_host_cpp "$@"
1169     cat > $TMPC
1170     log_file $TMPC
1171     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1172 }
1173
1174 check_host_cppflags(){
1175     log check_host_cppflags "$@"
1176     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1177 #include <stdlib.h>;
1178 EOF
1179 }
1180
1181 check_host_cflags(){
1182     log check_host_cflags "$@"
1183     set -- $($host_cflags_filter "$@")
1184     check_host_cc "$@" <<EOF && append host_cflags "$@"
1185 int x;
1186 EOF
1187 }
1188
1189 check_host_cpp_condition(){
1190     log check_host_cpp_condition "$@"
1191     header=$1
1192     condition=$2
1193     shift 2
1194     check_host_cpp "$@" <<EOF
1195 #include <$header>
1196 #if !($condition)
1197 #error "unsatisfied condition: $condition"
1198 #endif
1199 EOF
1200 }
1201
1202 apply(){
1203     file=$1
1204     shift
1205     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1206 }
1207
1208 cp_if_changed(){
1209     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1210     mkdir -p "$(dirname $2)"
1211     cp -f "$1" "$2"
1212 }
1213
1214 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1215 # system-dependent things.
1216
1217 AVCODEC_COMPONENTS="
1218     bsfs
1219     decoders
1220     encoders
1221     hwaccels
1222     parsers
1223 "
1224
1225 AVDEVICE_COMPONENTS="
1226     indevs
1227     outdevs
1228 "
1229 AVFILTER_COMPONENTS="
1230     filters
1231 "
1232 AVFORMAT_COMPONENTS="
1233     demuxers
1234     muxers
1235     protocols
1236 "
1237
1238 AVRESAMPLE_COMPONENTS=""
1239 AVUTIL_COMPONENTS=""
1240
1241 COMPONENT_LIST="
1242     $AVCODEC_COMPONENTS
1243     $AVDEVICE_COMPONENTS
1244     $AVFILTER_COMPONENTS
1245     $AVFORMAT_COMPONENTS
1246     $AVRESAMPLE_COMPONENTS
1247     $AVUTIL_COMPONENTS
1248 "
1249
1250 EXAMPLE_LIST="
1251     decode_audio_example
1252     decode_video_example
1253     encode_audio_example
1254     encode_video_example
1255     filter_audio_example
1256     metadata_example
1257     output_example
1258     qsvdec_example
1259     transcode_aac_example
1260 "
1261
1262 # catchall list of things that require external libs to link
1263 EXTRALIBS_LIST="
1264     cpu_init
1265     cws2fws
1266 "
1267
1268 HWACCEL_LIBRARY_NONFREE_LIST="
1269     cuda
1270     cuvid
1271     libnpp
1272 "
1273 HWACCEL_LIBRARY_LIST="
1274     $HWACCEL_LIBRARY_NONFREE_LIST
1275     d3d11va
1276     dxva2
1277     libmfx
1278     mmal
1279     nvenc
1280     omx
1281     vaapi
1282     vda
1283     vdpau
1284 "
1285
1286 EXTERNAL_LIBRARY_GPL_LIST="
1287     libcdio
1288     libx264
1289     libx265
1290     libxavs
1291     libxvid
1292 "
1293
1294 EXTERNAL_LIBRARY_NONFREE_LIST="
1295     libfaac
1296     libfdk_aac
1297     openssl
1298 "
1299
1300 EXTERNAL_LIBRARY_VERSION3_LIST="
1301     libopencore_amrnb
1302     libopencore_amrwb
1303     libvo_aacenc
1304     libvo_amrwbenc
1305 "
1306
1307 EXTERNAL_LIBRARY_LIST="
1308     $EXTERNAL_LIBRARY_GPL_LIST
1309     $EXTERNAL_LIBRARY_NONFREE_LIST
1310     $EXTERNAL_LIBRARY_VERSION3_LIST
1311     avisynth
1312     avxsynth
1313     frei0r
1314     gnutls
1315     libbs2b
1316     libdc1394
1317     libdcadec
1318     libfontconfig
1319     libfreetype
1320     libgsm
1321     libhdcd
1322     libilbc
1323     libjack
1324     libkvazaar
1325     libmp3lame
1326     libopencv
1327     libopenh264
1328     libopenjpeg
1329     libopus
1330     libpulse
1331     librtmp
1332     libschroedinger
1333     libsnappy
1334     libspeex
1335     libtheora
1336     libtwolame
1337     libvorbis
1338     libvpx
1339     libwavpack
1340     libwebp
1341     libxcb
1342     libxcb_shm
1343     libxcb_xfixes
1344 "
1345
1346 SYSTEM_LIBRARY_LIST="
1347     bzlib
1348     zlib
1349 "
1350
1351 FEATURE_LIST="
1352     gray
1353     hardcoded_tables
1354     omx_rpi
1355     runtime_cpudetect
1356     safe_bitstream_reader
1357     shared
1358     small
1359     sram
1360     static
1361     swscale_alpha
1362 "
1363
1364 LIBRARY_LIST="
1365     avcodec
1366     avdevice
1367     avfilter
1368     avformat
1369     avresample
1370     avutil
1371     swscale
1372 "
1373
1374 LICENSE_LIST="
1375     gpl
1376     nonfree
1377     version3
1378 "
1379
1380 PROGRAM_LIST="
1381     avconv
1382     avplay
1383     avprobe
1384 "
1385
1386 SUBSYSTEM_LIST="
1387     dct
1388     doc
1389     error_resilience
1390     faan
1391     fft
1392     lsp
1393     lzo
1394     mdct
1395     network
1396     rdft
1397 "
1398
1399 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1400 CONFIG_LIST="
1401     $EXAMPLE_LIST
1402     $EXTERNAL_LIBRARY_LIST
1403     $HWACCEL_LIBRARY_LIST
1404     $FEATURE_LIST
1405     $LICENSE_LIST
1406     $LIBRARY_LIST
1407     $PROGRAM_LIST
1408     $SUBSYSTEM_LIST
1409     $SYSTEM_LIBRARY_LIST
1410     neon_clobber_test
1411     pic
1412     pod2man
1413     texi2html
1414     thumb
1415     valgrind_backtrace
1416     xmm_clobber_test
1417     $COMPONENT_LIST
1418 "
1419
1420 THREADS_LIST="
1421     pthreads
1422     w32threads
1423 "
1424
1425 ATOMICS_LIST="
1426     atomics_gcc
1427     atomics_suncc
1428     atomics_win32
1429 "
1430
1431 ARCH_LIST="
1432     aarch64
1433     alpha
1434     arm
1435     avr32
1436     avr32_ap
1437     avr32_uc
1438     bfin
1439     ia64
1440     m68k
1441     mips
1442     mips64
1443     parisc
1444     ppc
1445     ppc64
1446     s390
1447     sh4
1448     sparc
1449     sparc64
1450     tilegx
1451     tilepro
1452     tomi
1453     x86
1454     x86_32
1455     x86_64
1456 "
1457
1458 ARCH_EXT_LIST_ARM="
1459     armv5te
1460     armv6
1461     armv6t2
1462     armv8
1463     neon
1464     vfp
1465     vfpv3
1466 "
1467
1468 ARCH_EXT_LIST_X86_SIMD="
1469     amd3dnow
1470     amd3dnowext
1471     avx
1472     avx2
1473     fma3
1474     fma4
1475     mmx
1476     mmxext
1477     sse
1478     sse2
1479     sse3
1480     sse4
1481     sse42
1482     ssse3
1483     xop
1484 "
1485
1486 ARCH_EXT_LIST_PPC="
1487     altivec
1488     dcbzl
1489     ldbrx
1490     power8
1491     ppc4xx
1492     vsx
1493 "
1494
1495 ARCH_EXT_LIST_X86="
1496     $ARCH_EXT_LIST_X86_SIMD
1497     cpunop
1498     i686
1499 "
1500
1501 ARCH_EXT_LIST_MIPS="
1502     loongson
1503     mips32r1
1504     mips64r1
1505     mips32r2
1506     mips64r2
1507     mips32r6
1508     mips64r6
1509 "
1510
1511 ARCH_EXT_LIST="
1512     $ARCH_EXT_LIST_ARM
1513     $ARCH_EXT_LIST_MIPS
1514     $ARCH_EXT_LIST_PPC
1515     $ARCH_EXT_LIST_X86
1516     vis
1517 "
1518
1519 ARCH_FEATURES="
1520     aligned_stack
1521     fast_64bit
1522     fast_clz
1523     fast_cmov
1524     local_aligned_8
1525     local_aligned_16
1526     local_aligned_32
1527     simd_align_16
1528     simd_align_32
1529 "
1530
1531 BUILTIN_LIST="
1532     atomic_cas_ptr
1533     machine_rw_barrier
1534     MemoryBarrier
1535     mm_empty
1536     rdtsc
1537     sem_timedwait
1538     sync_val_compare_and_swap
1539 "
1540 HAVE_LIST_CMDLINE="
1541     inline_asm
1542     symver
1543     x86asm
1544 "
1545
1546 HAVE_LIST_PUB="
1547     bigendian
1548     fast_unaligned
1549 "
1550
1551 HEADERS_LIST="
1552     AVFoundation_AVFoundation_h
1553     alsa_asoundlib_h
1554     arpa_inet_h
1555     cdio_paranoia_h
1556     cdio_paranoia_paranoia_h
1557     d3d11_h
1558     dispatch_dispatch_h
1559     dev_bktr_ioctl_bt848_h
1560     dev_bktr_ioctl_meteor_h
1561     dev_ic_bt8xx_h
1562     dev_video_bktr_ioctl_bt848_h
1563     dev_video_meteor_ioctl_meteor_h
1564     direct_h
1565     dlfcn_h
1566     dxgidebug_h
1567     dxva_h
1568     gsm_h
1569     io_h
1570     mach_mach_time_h
1571     machine_ioctl_bt848_h
1572     machine_ioctl_meteor_h
1573     malloc_h
1574     poll_h
1575     sndio_h
1576     soundcard_h
1577     stdatomic_h
1578     sys_mman_h
1579     sys_param_h
1580     sys_resource_h
1581     sys_select_h
1582     sys_soundcard_h
1583     sys_time_h
1584     sys_un_h
1585     sys_videoio_h
1586     unistd_h
1587     valgrind_valgrind_h
1588     windows_h
1589     winsock2_h
1590 "
1591
1592 INTRINSICS_LIST="
1593     intrinsics_neon
1594 "
1595
1596 MATH_FUNCS="
1597     atanf
1598     atan2f
1599     cbrtf
1600     cosf
1601     exp2
1602     exp2f
1603     expf
1604     isinf
1605     isnan
1606     ldexpf
1607     llrint
1608     llrintf
1609     log2
1610     log2f
1611     log10f
1612     lrint
1613     lrintf
1614     powf
1615     rint
1616     round
1617     roundf
1618     sinf
1619     trunc
1620     truncf
1621 "
1622
1623 SYSTEM_FUNCS="
1624     aligned_malloc
1625     clock_gettime
1626     closesocket
1627     CommandLineToArgvW
1628     CoTaskMemFree
1629     CryptGenRandom
1630     fcntl
1631     flt_lim
1632     fork
1633     getaddrinfo
1634     gethrtime
1635     getopt
1636     GetProcessAffinityMask
1637     GetProcessMemoryInfo
1638     GetProcessTimes
1639     getrusage
1640     GetSystemTimeAsFileTime
1641     gettimeofday
1642     gmtime_r
1643     inet_aton
1644     isatty
1645     LoadLibrary
1646     localtime_r
1647     mach_absolute_time
1648     MapViewOfFile
1649     memalign
1650     mkstemp
1651     mmap
1652     mprotect
1653     nanosleep
1654     posix_memalign
1655     sched_getaffinity
1656     SetConsoleTextAttribute
1657     setmode
1658     setrlimit
1659     Sleep
1660     strerror_r
1661     sysconf
1662     sysctl
1663     usleep
1664     VirtualAlloc
1665 "
1666
1667 TOOLCHAIN_FEATURES="
1668     as_arch_directive
1669     as_fpu_directive
1670     as_func
1671     as_object_arch
1672     asm_mod_q
1673     attribute_may_alias
1674     attribute_packed
1675     blocks_extension
1676     ebp_available
1677     ebx_available
1678     gnu_as
1679     ibm_asm
1680     inline_asm_labels
1681     pragma_deprecated
1682     symver_asm_label
1683     symver_gnu_asm
1684     vfp_args
1685     xform_asm
1686     xmm_clobbers
1687 "
1688
1689 TYPES_LIST="
1690     CONDITION_VARIABLE_Ptr
1691     CUVIDDECODECREATEINFO_bitDepthMinus8
1692     socklen_t
1693     struct_addrinfo
1694     struct_group_source_req
1695     struct_ip_mreq_source
1696     struct_ipv6_mreq
1697     struct_pollfd
1698     struct_rusage_ru_maxrss
1699     struct_sockaddr_in6
1700     struct_sockaddr_sa_len
1701     struct_sockaddr_storage
1702     struct_v4l2_frmivalenum_discrete
1703 "
1704
1705 HAVE_LIST="
1706     $ARCH_EXT_LIST
1707     $(add_suffix _external $ARCH_EXT_LIST)
1708     $(add_suffix _inline   $ARCH_EXT_LIST)
1709     $ARCH_FEATURES
1710     $BUILTIN_LIST
1711     $HAVE_LIST_CMDLINE
1712     $HAVE_LIST_PUB
1713     $HEADERS_LIST
1714     $INTRINSICS_LIST
1715     $MATH_FUNCS
1716     $SYSTEM_FUNCS
1717     $THREADS_LIST
1718     $TOOLCHAIN_FEATURES
1719     $TYPES_LIST
1720     dos_paths
1721     libc_msvcrt
1722     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1723     sdl
1724     section_data_rel_ro
1725     threads
1726     uwp
1727     vaapi_drm
1728     vaapi_x11
1729     vdpau_x11
1730 "
1731
1732 # options emitted with CONFIG_ prefix but not available on the command line
1733 CONFIG_EXTRA="
1734     aandcttables
1735     ac3dsp
1736     adts_header
1737     audio_frame_queue
1738     audiodsp
1739     blockdsp
1740     bswapdsp
1741     cabac
1742     cbs
1743     cbs_h264
1744     dirac_parse
1745     dvprofile
1746     faandct
1747     faanidct
1748     fdctdsp
1749     flacdsp
1750     fmtconvert
1751     g722dsp
1752     gmp
1753     golomb
1754     gplv3
1755     h263dsp
1756     h264chroma
1757     h264dsp
1758     h264parse
1759     h264pred
1760     h264qpel
1761     hevc_ps
1762     hpeldsp
1763     huffman
1764     huffyuvdsp
1765     huffyuvencdsp
1766     idctdsp
1767     iirfilter
1768     imdct15
1769     intrax8
1770     iso_media
1771     ividsp
1772     jpegtables
1773     lgplv3
1774     libx262
1775     libxcb_shape
1776     lpc
1777     lzf
1778     me_cmp
1779     mpeg_er
1780     mpegaudio
1781     mpegaudiodsp
1782     mpegaudioheader
1783     mpegvideo
1784     mpegvideoenc
1785     mss34dsp
1786     pixblockdsp
1787     qpeldsp
1788     qsv
1789     qsvdec
1790     qsvenc
1791     rangecoder
1792     riffdec
1793     riffenc
1794     rtpdec
1795     rtpenc_chain
1796     rv34dsp
1797     sinewin
1798     snappy
1799     srtp
1800     startcode
1801     texturedsp
1802     texturedspenc
1803     tpeldsp
1804     vaapi_encode
1805     vc1dsp
1806     videodsp
1807     vp3dsp
1808     vp56dsp
1809     vp8dsp
1810     wma_freqs
1811     wmv2dsp
1812 "
1813
1814 CMDLINE_SELECT="
1815     $ARCH_EXT_LIST
1816     $CONFIG_LIST
1817     $HAVE_LIST_CMDLINE
1818     $THREADS_LIST
1819     asm
1820     cross_compile
1821     debug
1822     extra_warnings
1823     logging
1824     lto
1825     optimizations
1826     rpath
1827 "
1828
1829 PATHS_LIST="
1830     bindir
1831     datadir
1832     docdir
1833     incdir
1834     libdir
1835     mandir
1836     prefix
1837     shlibdir
1838 "
1839
1840 CMDLINE_SET="
1841     $PATHS_LIST
1842     ar
1843     arch
1844     as
1845     cc
1846     objcc
1847     cpu
1848     cross_prefix
1849     custom_allocator
1850     dep_cc
1851     env
1852     extra_version
1853     host_cc
1854     host_cflags
1855     host_extralibs
1856     host_ld
1857     host_ldflags
1858     host_os
1859     ignore_tests
1860     ld
1861     logfile
1862     malloc_prefix
1863     nm
1864     optflags
1865     pkg_config
1866     pkg_config_flags
1867     random_seed
1868     samples
1869     sysinclude
1870     sysroot
1871     target_exec
1872     target_os
1873     target_path
1874     target_samples
1875     toolchain
1876     x86asmexe
1877 "
1878
1879 CMDLINE_APPEND="
1880     extra_cflags
1881     extra_objcflags
1882     host_cppflags
1883 "
1884
1885 # code dependency declarations
1886
1887 # architecture extensions
1888
1889 armv5te_deps="arm"
1890 armv6_deps="arm"
1891 armv6t2_deps="arm"
1892 armv8_deps="aarch64"
1893 neon_deps_any="aarch64 arm"
1894 intrinsics_neon_deps="neon"
1895 vfp_deps_any="aarch64 arm"
1896 vfpv3_deps="vfp"
1897
1898 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1899
1900 altivec_deps="ppc"
1901 dcbzl_deps="ppc"
1902 ldbrx_deps="ppc"
1903 ppc4xx_deps="ppc"
1904 vsx_deps="altivec"
1905 power8_deps="vsx"
1906
1907 loongson_deps="mips"
1908 mips32r1_deps="mips32"
1909 mips32r2_deps="mips32"
1910 mips32r6_deps="mips32"
1911 mips64r1_deps="mips64"
1912 mips64r2_deps="mips64"
1913 mips64r6_deps="mips64"
1914
1915 vis_deps="sparc"
1916
1917 cpunop_deps="i686"
1918 x86_64_select="i686"
1919 x86_64_suggest="fast_cmov"
1920
1921 amd3dnow_deps="mmx"
1922 amd3dnowext_deps="amd3dnow"
1923 i686_deps="x86"
1924 mmx_deps="x86"
1925 mmxext_deps="mmx"
1926 sse_deps="mmxext"
1927 sse2_deps="sse"
1928 sse3_deps="sse2"
1929 ssse3_deps="sse3"
1930 sse4_deps="ssse3"
1931 sse42_deps="sse4"
1932 avx_deps="sse42"
1933 xop_deps="avx"
1934 fma3_deps="avx"
1935 fma4_deps="avx"
1936 avx2_deps="avx"
1937
1938 mmx_external_deps="x86asm"
1939 mmx_inline_deps="inline_asm x86"
1940 mmx_suggest="mmx_external mmx_inline"
1941
1942 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1943     eval dep=\$${ext}_deps
1944     eval ${ext}_external_deps='"${dep}_external"'
1945     eval ${ext}_inline_deps='"${dep}_inline"'
1946     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1947 done
1948
1949 aligned_stack_if_any="aarch64 ppc x86"
1950 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1951 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1952 fast_unaligned_if_any="aarch64 ppc x86"
1953 simd_align_16_if_any="altivec neon sse"
1954 simd_align_32_if_any="avx"
1955
1956 # system capabilities
1957 symver_if_any="symver_asm_label symver_gnu_asm"
1958 valgrind_backtrace_conflict="optimizations"
1959 valgrind_backtrace_deps="valgrind_valgrind_h"
1960
1961 # threading support
1962 atomics_gcc_if="sync_val_compare_and_swap"
1963 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1964 atomics_win32_if="MemoryBarrier"
1965 atomics_native_if_any="$ATOMICS_LIST"
1966 w32threads_deps="atomics_native"
1967 threads_if_any="$THREADS_LIST"
1968
1969 # subsystems
1970 cbs_h264_select="cbs golomb"
1971 dct_select="rdft"
1972 dirac_parse_select="golomb"
1973 error_resilience_select="me_cmp"
1974 faandct_deps="faan"
1975 faandct_select="fdctdsp"
1976 faanidct_deps="faan"
1977 faanidct_select="idctdsp"
1978 h264dsp_select="startcode"
1979 hevc_ps_select="golomb"
1980 intrax8_select="blockdsp idctdsp"
1981 mdct_select="fft"
1982 rdft_select="fft"
1983 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1984 mpeg_er_select="error_resilience"
1985 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1986 mpegaudiodsp_select="dct"
1987 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1988 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1989 vc1dsp_select="h264chroma qpeldsp startcode"
1990
1991 # decoders / encoders
1992 aac_decoder_select="adts_header imdct15 mdct sinewin"
1993 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1994 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1995 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1996 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1997 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1998 adpcm_g722_decoder_select="g722dsp"
1999 adpcm_g722_encoder_select="g722dsp"
2000 aic_decoder_select="golomb idctdsp"
2001 alac_encoder_select="lpc"
2002 als_decoder_select="bswapdsp"
2003 amrnb_decoder_select="lsp"
2004 amrwb_decoder_select="lsp"
2005 amv_decoder_select="sp5x_decoder"
2006 ape_decoder_select="bswapdsp"
2007 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2008 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2009 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2010 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2011 atrac1_decoder_select="mdct sinewin"
2012 atrac3_decoder_select="mdct"
2013 atrac3p_decoder_select="mdct sinewin"
2014 bink_decoder_select="blockdsp hpeldsp"
2015 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2016 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2017 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2018 clearvideo_decoder_select="idctdsp"
2019 cllc_decoder_select="bswapdsp"
2020 comfortnoise_encoder_select="lpc"
2021 cook_decoder_select="audiodsp mdct sinewin"
2022 cscd_decoder_select="lzo"
2023 cscd_decoder_suggest="zlib"
2024 dca_decoder_select="fmtconvert mdct"
2025 dds_decoder_select="texturedsp"
2026 dnxhd_decoder_select="blockdsp idctdsp"
2027 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2028 dvvideo_decoder_select="dvprofile idctdsp"
2029 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2030 dxa_decoder_deps="zlib"
2031 dxv_decoder_select="lzf texturedsp"
2032 eac3_decoder_select="ac3_decoder"
2033 eac3_encoder_select="ac3_encoder"
2034 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2035 eatgq_decoder_select="aandcttables idctdsp"
2036 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2037 exr_decoder_deps="zlib"
2038 ffv1_decoder_select="rangecoder"
2039 ffv1_encoder_select="rangecoder"
2040 ffvhuff_decoder_select="huffyuv_decoder"
2041 ffvhuff_encoder_select="huffyuv_encoder"
2042 fic_decoder_select="golomb"
2043 flac_decoder_select="flacdsp"
2044 flac_encoder_select="bswapdsp flacdsp lpc"
2045 flashsv_decoder_deps="zlib"
2046 flashsv_encoder_deps="zlib"
2047 flashsv2_decoder_deps="zlib"
2048 flv_decoder_select="h263_decoder"
2049 flv_encoder_select="h263_encoder"
2050 fourxm_decoder_select="blockdsp bswapdsp"
2051 fraps_decoder_select="bswapdsp huffman"
2052 g2m_decoder_deps="zlib"
2053 g2m_decoder_select="blockdsp idctdsp jpegtables"
2054 h261_decoder_select="mpeg_er mpegvideo"
2055 h261_encoder_select="aandcttables mpegvideoenc"
2056 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2057 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2058 h263i_decoder_select="h263_decoder"
2059 h263p_encoder_select="h263_encoder"
2060 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2061 h264_decoder_suggest="error_resilience"
2062 hap_decoder_select="snappy texturedsp"
2063 hap_encoder_deps="libsnappy"
2064 hap_encoder_select="texturedspenc"
2065 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2066 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2067 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2068 iac_decoder_select="imc_decoder"
2069 imc_decoder_select="bswapdsp fft mdct sinewin"
2070 indeo3_decoder_select="hpeldsp"
2071 indeo4_decoder_select="ividsp"
2072 indeo5_decoder_select="ividsp"
2073 interplay_video_decoder_select="hpeldsp"
2074 jpegls_decoder_select="mjpeg_decoder"
2075 jv_decoder_select="blockdsp"
2076 lagarith_decoder_select="huffyuvdsp"
2077 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2078 magicyuv_decoder_select="huffyuvdsp"
2079 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2080 metasound_decoder_select="lsp mdct sinewin"
2081 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2082 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2083 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2084 mjpegb_decoder_select="mjpeg_decoder"
2085 mlp_decoder_select="mlp_parser"
2086 motionpixels_decoder_select="bswapdsp"
2087 mp1_decoder_select="mpegaudio"
2088 mp1float_decoder_select="mpegaudio"
2089 mp2_decoder_select="mpegaudio"
2090 mp2float_decoder_select="mpegaudio"
2091 mp3_decoder_select="mpegaudio"
2092 mp3adu_decoder_select="mpegaudio"
2093 mp3adufloat_decoder_select="mpegaudio"
2094 mp3float_decoder_select="mpegaudio"
2095 mp3on4_decoder_select="mpegaudio"
2096 mp3on4float_decoder_select="mpegaudio"
2097 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2098 mpc8_decoder_select="mpegaudiodsp"
2099 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2100 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2101 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2102 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2103 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2104 mpeg4_encoder_select="h263_encoder"
2105 msa1_decoder_select="mss34dsp"
2106 msmpeg4v1_decoder_select="h263_decoder"
2107 msmpeg4v2_decoder_select="h263_decoder"
2108 msmpeg4v2_encoder_select="h263_encoder"
2109 msmpeg4v3_decoder_select="h263_decoder"
2110 msmpeg4v3_encoder_select="h263_encoder"
2111 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2112 mts2_decoder_select="mss34dsp"
2113 mxpeg_decoder_select="mjpeg_decoder"
2114 nellymoser_decoder_select="mdct sinewin"
2115 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2116 nuv_decoder_select="idctdsp lzo"
2117 on2avc_decoder_select="mdct"
2118 opus_decoder_deps="avresample"
2119 opus_decoder_select="imdct15"
2120 png_decoder_deps="zlib"
2121 png_encoder_deps="zlib"
2122 png_encoder_select="huffyuvencdsp"
2123 prores_decoder_select="idctdsp"
2124 prores_encoder_select="fdctdsp"
2125 qcelp_decoder_select="lsp"
2126 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2127 ra_144_encoder_select="audio_frame_queue lpc"
2128 ralf_decoder_select="golomb"
2129 rscc_decoder_deps="zlib"
2130 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2131 rv10_encoder_select="h263_encoder"
2132 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2133 rv20_encoder_select="h263_encoder"
2134 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2135 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2136 screenpresso_decoder_deps="zlib"
2137 sipr_decoder_select="lsp"
2138 sp5x_decoder_select="mjpeg_decoder"
2139 svq1_decoder_select="hpeldsp"
2140 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2141 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2142 svq3_decoder_suggest="zlib"
2143 tak_decoder_select="audiodsp"
2144 tdsc_decoder_deps="zlib"
2145 tdsc_decoder_select="mjpeg_decoder"
2146 theora_decoder_select="vp3_decoder"
2147 thp_decoder_select="mjpeg_decoder"
2148 tiff_decoder_suggest="zlib"
2149 tiff_encoder_suggest="zlib"
2150 truehd_decoder_select="mlp_decoder"
2151 truemotion2_decoder_select="bswapdsp"
2152 truespeech_decoder_select="bswapdsp"
2153 tscc_decoder_deps="zlib"
2154 txd_decoder_select="texturedsp"
2155 twinvq_decoder_select="mdct lsp sinewin"
2156 utvideo_decoder_select="bswapdsp huffyuvdsp"
2157 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2158 vble_decoder_select="huffyuvdsp"
2159 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2160 vc1image_decoder_select="vc1_decoder"
2161 vorbis_decoder_select="mdct"
2162 vorbis_encoder_select="mdct"
2163 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2164 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2165 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2166 vp6a_decoder_select="vp6_decoder"
2167 vp6f_decoder_select="vp6_decoder"
2168 vp7_decoder_select="h264pred videodsp vp8dsp"
2169 vp8_decoder_select="h264pred videodsp vp8dsp"
2170 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2171 webp_decoder_select="vp8_decoder"
2172 wmapro_decoder_select="mdct sinewin wma_freqs"
2173 wmav1_decoder_select="mdct sinewin wma_freqs"
2174 wmav1_encoder_select="mdct sinewin wma_freqs"
2175 wmav2_decoder_select="mdct sinewin wma_freqs"
2176 wmav2_encoder_select="mdct sinewin wma_freqs"
2177 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2178 wmv1_decoder_select="h263_decoder"
2179 wmv1_encoder_select="h263_encoder"
2180 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2181 wmv2_encoder_select="h263_encoder wmv2dsp"
2182 wmv3_decoder_select="vc1_decoder"
2183 wmv3image_decoder_select="wmv3_decoder"
2184 zerocodec_decoder_deps="zlib"
2185 zlib_decoder_deps="zlib"
2186 zlib_encoder_deps="zlib"
2187 zmbv_decoder_deps="zlib"
2188 zmbv_encoder_deps="zlib"
2189
2190 # hardware accelerators
2191 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2192 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2193 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2194 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2195
2196 h263_vaapi_hwaccel_deps="vaapi"
2197 h263_vaapi_hwaccel_select="h263_decoder"
2198 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2199 h264_cuvid_hwaccel_select="h264_decoder"
2200 h264_d3d11va_hwaccel_deps="d3d11va"
2201 h264_d3d11va_hwaccel_select="h264_decoder"
2202 h264_d3d11va2_hwaccel_deps="d3d11va"
2203 h264_d3d11va2_hwaccel_select="h264_decoder"
2204 h264_dxva2_hwaccel_deps="dxva2"
2205 h264_dxva2_hwaccel_select="h264_decoder"
2206 h264_mmal_hwaccel_deps="mmal"
2207 h264_qsv_hwaccel_deps="libmfx"
2208 h264_vaapi_hwaccel_deps="vaapi"
2209 h264_vaapi_hwaccel_select="h264_decoder"
2210 h264_vda_hwaccel_deps="vda"
2211 h264_vda_hwaccel_select="h264_decoder"
2212 h264_vda_old_hwaccel_deps="vda"
2213 h264_vda_old_hwaccel_select="h264_decoder"
2214 h264_vdpau_hwaccel_deps="vdpau"
2215 h264_vdpau_hwaccel_select="h264_decoder"
2216 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2217 hevc_cuvid_hwaccel_select="hevc_decoder"
2218 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2219 hevc_d3d11va_hwaccel_select="hevc_decoder"
2220 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2221 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2222 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2223 hevc_dxva2_hwaccel_select="hevc_decoder"
2224 hevc_qsv_hwaccel_deps="libmfx"
2225 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2226 hevc_vaapi_hwaccel_select="hevc_decoder"
2227 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2228 hevc_vdpau_hwaccel_select="hevc_decoder"
2229 mpeg1_vdpau_hwaccel_deps="vdpau"
2230 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2231 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2232 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2233 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2234 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2235 mpeg2_dxva2_hwaccel_deps="dxva2"
2236 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2237 mpeg2_mmal_hwaccel_deps="mmal"
2238 mpeg2_qsv_hwaccel_deps="libmfx"
2239 mpeg2_vaapi_hwaccel_deps="vaapi"
2240 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2241 mpeg2_vdpau_hwaccel_deps="vdpau"
2242 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2243 mpeg4_vaapi_hwaccel_deps="vaapi"
2244 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2245 mpeg4_vdpau_hwaccel_deps="vdpau"
2246 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2247 vc1_d3d11va_hwaccel_deps="d3d11va"
2248 vc1_d3d11va_hwaccel_select="vc1_decoder"
2249 vc1_d3d11va2_hwaccel_deps="d3d11va"
2250 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2251 vc1_dxva2_hwaccel_deps="dxva2"
2252 vc1_dxva2_hwaccel_select="vc1_decoder"
2253 vc1_mmal_hwaccel_deps="mmal"
2254 vc1_qsv_hwaccel_deps="libmfx"
2255 vc1_vaapi_hwaccel_deps="vaapi"
2256 vc1_vaapi_hwaccel_select="vc1_decoder"
2257 vc1_vdpau_hwaccel_deps="vdpau"
2258 vc1_vdpau_hwaccel_select="vc1_decoder"
2259 vp8_qsv_hwaccel_deps="libmfx"
2260 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2261 vp8_vaapi_hwaccel_select="vp8_decoder"
2262 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2263 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2264 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2265 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2266 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2267
2268 # hardware-accelerated codecs
2269 nvenc_deps_any="libdl LoadLibrary"
2270 omx_deps="libdl pthreads"
2271 omx_rpi_select="omx"
2272 qsv_deps="libmfx"
2273 qsvdec_select="qsv"
2274 qsvenc_select="qsv"
2275 vaapi_encode_deps="vaapi"
2276
2277 hwupload_cuda_filter_deps="cuda"
2278 scale_npp_filter_deps="cuda libnpp"
2279
2280 h264_mmal_decoder_deps="mmal"
2281 h264_nvenc_encoder_deps="nvenc"
2282 h264_omx_encoder_deps="omx"
2283 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2284 h264_qsv_encoder_select="qsvenc"
2285 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2286 h264_vaapi_encoder_select="vaapi_encode golomb"
2287 hevc_nvenc_encoder_deps="nvenc"
2288 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2289 hevc_qsv_encoder_select="hevc_ps qsvenc"
2290 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2291 hevc_vaapi_encoder_select="vaapi_encode golomb"
2292 mjpeg_qsv_encoder_deps="libmfx"
2293 mjpeg_qsv_encoder_select="qsvenc"
2294 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2295 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2296 mpeg2_mmal_decoder_deps="mmal"
2297 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2298 mpeg2_qsv_encoder_select="qsvenc"
2299 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2300 mpeg2_vaapi_encoder_select="vaapi_encode"
2301 mpeg4_omx_encoder_deps="omx"
2302 vc1_mmal_decoder_deps="mmal"
2303 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2304 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2305 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2306 vp8_vaapi_encoder_select="vaapi_encode"
2307 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2308 vp9_vaapi_encoder_select="vaapi_encode"
2309
2310 nvenc_h264_encoder_select="h264_nvenc_encoder"
2311 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2312
2313 # parsers
2314 aac_parser_select="adts_header"
2315 h264_parser_select="golomb h264dsp h264parse"
2316 hevc_parser_select="hevc_ps"
2317 mpegaudio_parser_select="mpegaudioheader"
2318 mpegvideo_parser_select="mpegvideo"
2319 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2320 vc1_parser_select="vc1dsp"
2321
2322 # bitstream_filters
2323 aac_adtstoasc_bsf_select="adts_header"
2324 mjpeg2jpeg_bsf_select="jpegtables"
2325
2326 # external libraries
2327 avisynth_deps="LoadLibrary"
2328 avxsynth_deps="libdl"
2329 avisynth_demuxer_deps_any="avisynth avxsynth"
2330 avisynth_demuxer_select="riffdec"
2331 libdcadec_decoder_deps="libdcadec"
2332 libfaac_encoder_deps="libfaac"
2333 libfaac_encoder_select="audio_frame_queue"
2334 libfdk_aac_decoder_deps="libfdk_aac"
2335 libfdk_aac_encoder_deps="libfdk_aac"
2336 libfdk_aac_encoder_select="audio_frame_queue"
2337 libgsm_decoder_deps="libgsm"
2338 libgsm_encoder_deps="libgsm"
2339 libgsm_ms_decoder_deps="libgsm"
2340 libgsm_ms_encoder_deps="libgsm"
2341 libilbc_decoder_deps="libilbc"
2342 libilbc_encoder_deps="libilbc"
2343 libkvazaar_encoder_deps="libkvazaar"
2344 libmp3lame_encoder_deps="libmp3lame"
2345 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2346 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2347 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2348 libopencore_amrnb_encoder_select="audio_frame_queue"
2349 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2350 libopenh264_decoder_deps="libopenh264"
2351 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2352 libopenh264_encoder_deps="libopenh264"
2353 libopenjpeg_decoder_deps="libopenjpeg"
2354 libopenjpeg_encoder_deps="libopenjpeg"
2355 libopus_decoder_deps="libopus"
2356 libopus_encoder_deps="libopus"
2357 libopus_encoder_select="audio_frame_queue"
2358 libschroedinger_decoder_deps="libschroedinger"
2359 libschroedinger_encoder_deps="libschroedinger"
2360 libspeex_decoder_deps="libspeex"
2361 libspeex_encoder_deps="libspeex"
2362 libspeex_encoder_select="audio_frame_queue"
2363 libtheora_encoder_deps="libtheora"
2364 libtwolame_encoder_deps="libtwolame"
2365 libvo_aacenc_encoder_deps="libvo_aacenc"
2366 libvo_aacenc_encoder_select="audio_frame_queue"
2367 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2368 libvorbis_encoder_deps="libvorbis"
2369 libvorbis_encoder_select="audio_frame_queue"
2370 libvpx_vp8_decoder_deps="libvpx"
2371 libvpx_vp8_encoder_deps="libvpx"
2372 libvpx_vp9_decoder_deps="libvpx"
2373 libvpx_vp9_encoder_deps="libvpx"
2374 libwavpack_encoder_deps="libwavpack"
2375 libwavpack_encoder_select="audio_frame_queue"
2376 libwebp_encoder_deps="libwebp"
2377 libx262_encoder_deps="libx262"
2378 libx264_encoder_deps="libx264"
2379 libx265_encoder_deps="libx265"
2380 libxavs_encoder_deps="libxavs"
2381 libxvid_encoder_deps="libxvid mkstemp"
2382
2383 # demuxers / muxers
2384 ac3_demuxer_select="ac3_parser"
2385 asf_demuxer_select="riffdec"
2386 asf_muxer_select="riffenc"
2387 asf_stream_muxer_select="asf_muxer"
2388 avi_demuxer_select="iso_media riffdec"
2389 avi_muxer_select="riffenc"
2390 caf_demuxer_select="iso_media riffdec"
2391 dash_muxer_select="mp4_muxer"
2392 dirac_demuxer_select="dirac_parser"
2393 dv_demuxer_select="dvprofile"
2394 dv_muxer_select="dvprofile"
2395 dxa_demuxer_select="riffdec"
2396 eac3_demuxer_select="ac3_parser"
2397 f4v_muxer_select="mov_muxer"
2398 flac_demuxer_select="flac_parser"
2399 hds_muxer_select="flv_muxer"
2400 hls_muxer_select="mpegts_muxer"
2401 ipod_muxer_select="mov_muxer"
2402 ismv_muxer_select="mov_muxer"
2403 matroska_audio_muxer_select="matroska_muxer"
2404 matroska_demuxer_select="iso_media riffdec"
2405 matroska_demuxer_suggest="bzlib lzo zlib"
2406 matroska_muxer_select="iso_media riffenc"
2407 mmf_muxer_select="riffenc"
2408 mov_demuxer_select="iso_media riffdec"
2409 mov_demuxer_suggest="zlib"
2410 mov_muxer_select="iso_media riffenc rtpenc_chain"
2411 mp3_demuxer_select="mpegaudio_parser"
2412 mp3_muxer_select="mpegaudioheader"
2413 mp4_muxer_select="mov_muxer"
2414 mpegts_demuxer_select="iso_media"
2415 mpegts_muxer_select="adts_muxer latm_muxer"
2416 mpegtsraw_demuxer_select="mpegts_demuxer"
2417 mxf_d10_muxer_select="mxf_muxer"
2418 nut_muxer_select="riffenc"
2419 nuv_demuxer_select="riffdec"
2420 oga_muxer_select="ogg_muxer"
2421 ogg_demuxer_select="dirac_parse"
2422 opus_muxer_select="ogg_muxer"
2423 psp_muxer_select="mov_muxer"
2424 rtp_demuxer_select="sdp_demuxer"
2425 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2426 rtsp_demuxer_select="http_protocol rtpdec"
2427 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2428 sap_demuxer_select="sdp_demuxer"
2429 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2430 sdp_demuxer_select="rtpdec"
2431 smoothstreaming_muxer_select="ismv_muxer"
2432 spdif_demuxer_select="adts_header"
2433 spdif_muxer_select="adts_header"
2434 spx_muxer_select="ogg_muxer"
2435 swf_demuxer_suggest="zlib"
2436 tak_demuxer_select="tak_parser"
2437 tg2_muxer_select="mov_muxer"
2438 tgp_muxer_select="mov_muxer"
2439 w64_demuxer_select="wav_demuxer"
2440 wav_demuxer_select="riffdec"
2441 wav_muxer_select="riffenc"
2442 webm_muxer_select="iso_media riffenc"
2443 wtv_demuxer_select="mpegts_demuxer riffdec"
2444 xmv_demuxer_select="riffdec"
2445 xwma_demuxer_select="riffdec"
2446
2447 # indevs / outdevs
2448 alsa_indev_deps="alsa"
2449 alsa_outdev_deps="alsa"
2450 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2451 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2452 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2453 dv1394_indev_deps="dv1394"
2454 dv1394_indev_select="dv_demuxer"
2455 fbdev_indev_deps="linux_fb_h"
2456 jack_indev_deps="libjack"
2457 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2458 libcdio_indev_deps="libcdio"
2459 libdc1394_indev_deps="libdc1394"
2460 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2461 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2462 pulse_indev_deps="libpulse"
2463 sndio_indev_deps="sndio"
2464 sndio_outdev_deps="sndio"
2465 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2466 vfwcap_indev_deps="vfw32 vfwcap_defines"
2467 xcbgrab_indev_deps="libxcb libxcb_shape"
2468 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2469
2470 # protocols
2471 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2472 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2473 ffrtmpcrypt_protocol_select="tcp_protocol"
2474 ffrtmphttp_protocol_conflict="librtmp_protocol"
2475 ffrtmphttp_protocol_select="http_protocol"
2476 gopher_protocol_select="network"
2477 http_protocol_select="tcp_protocol"
2478 http_protocol_suggest="zlib"
2479 httpproxy_protocol_select="tcp_protocol"
2480 httpproxy_protocol_suggest="zlib"
2481 https_protocol_select="tls_protocol"
2482 https_protocol_suggest="zlib"
2483 icecast_protocol_select="http_protocol"
2484 librtmp_protocol_deps="librtmp"
2485 librtmpe_protocol_deps="librtmp"
2486 librtmps_protocol_deps="librtmp"
2487 librtmpt_protocol_deps="librtmp"
2488 librtmpte_protocol_deps="librtmp"
2489 mmsh_protocol_select="http_protocol"
2490 mmst_protocol_select="network"
2491 rtmp_protocol_conflict="librtmp_protocol"
2492 rtmp_protocol_select="tcp_protocol"
2493 rtmp_protocol_suggest="zlib"
2494 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2495 rtmpe_protocol_suggest="zlib"
2496 rtmps_protocol_conflict="librtmp_protocol"
2497 rtmps_protocol_select="tls_protocol"
2498 rtmps_protocol_suggest="zlib"
2499 rtmpt_protocol_select="ffrtmphttp_protocol"
2500 rtmpt_protocol_suggest="zlib"
2501 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2502 rtmpte_protocol_suggest="zlib"
2503 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2504 rtmpts_protocol_suggest="zlib"
2505 rtp_protocol_select="udp_protocol"
2506 sctp_protocol_deps="struct_sctp_event_subscribe"
2507 sctp_protocol_select="network"
2508 srtp_protocol_select="rtp_protocol srtp"
2509 tcp_protocol_select="network"
2510 tls_protocol_deps_any="gnutls openssl"
2511 tls_protocol_select="tcp_protocol"
2512 udp_protocol_select="network"
2513 unix_protocol_deps="sys_un_h"
2514 unix_protocol_select="network"
2515
2516 # filters
2517 asyncts_filter_deps="avresample"
2518 blackframe_filter_deps="gpl"
2519 boxblur_filter_deps="gpl"
2520 bs2b_filter_deps="libbs2b"
2521 cropdetect_filter_deps="gpl"
2522 deinterlace_qsv_filter_deps="libmfx"
2523 deinterlace_vaapi_filter_deps="vaapi"
2524 delogo_filter_deps="gpl"
2525 drawtext_filter_deps="libfreetype"
2526 drawtext_filter_suggest="libfontconfig"
2527 frei0r_filter_deps="frei0r libdl"
2528 frei0r_src_filter_deps="frei0r libdl"
2529 hdcd_filter_deps="libhdcd"
2530 hqdn3d_filter_deps="gpl"
2531 interlace_filter_deps="gpl"
2532 movie_filter_deps="avcodec avformat"
2533 ocv_filter_deps="libopencv"
2534 resample_filter_deps="avresample"
2535 scale_filter_deps="swscale"
2536 scale_qsv_filter_deps="libmfx"
2537 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2538
2539 # examples
2540 decode_audio_example_deps="avcodec avutil"
2541 decode_video_example_deps="avcodec avutil"
2542 encode_audio_example_deps="avcodec avutil"
2543 encode_video_example_deps="avcodec avutil"
2544 filter_audio_example_deps="avfilter avutil"
2545 metadata_example_deps="avformat avutil"
2546 output_example_deps="avcodec avformat avresample avutil swscale"
2547 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2548 transcode_aac_example_deps="avcodec avformat avresample"
2549
2550 # EXTRALIBS_LIST
2551 cpu_init_extralibs="pthreads_extralibs"
2552 cws2fws_extralibs="zlib_extralibs"
2553
2554 # libraries, in linking order
2555 avcodec_deps="avutil"
2556 avcodec_select="null_bsf"
2557 avdevice_deps="avformat avcodec avutil"
2558 avfilter_deps="avutil"
2559 avformat_deps="avcodec avutil"
2560 avformat_suggest="network"
2561 avresample_deps="avutil"
2562 swscale_deps="avutil"
2563
2564 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2565 avdevice_extralibs="libm_extralibs"
2566 avformat_extralibs="libm_extralibs"
2567 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2568 avresample_extralibs="libm_extralibs"
2569 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2570 swscale_extralibs="libm_extralibs"
2571
2572 # programs
2573 avconv_deps="avcodec avfilter avformat avresample swscale"
2574 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2575                fps_filter null_filter resample_filter scale_filter
2576                trim_filter"
2577 avconv_suggest="psapi shell32"
2578 avplay_deps="avcodec avfilter avformat avresample sdl"
2579 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2580 avplay_suggest="shell32"
2581 avprobe_deps="avcodec avformat"
2582 avprobe_suggest="shell32"
2583
2584 # documentation
2585 pod2man_deps="doc"
2586 texi2html_deps="doc"
2587
2588 # default parameters
2589
2590 logfile="avbuild/config.log"
2591
2592 # installation paths
2593 prefix_default="/usr/local"
2594 bindir_default='${prefix}/bin'
2595 datadir_default='${prefix}/share/avconv'
2596 docdir_default='${prefix}/share/doc/libav'
2597 incdir_default='${prefix}/include'
2598 libdir_default='${prefix}/lib'
2599 mandir_default='${prefix}/share/man'
2600 shlibdir_default="$libdir_default"
2601
2602 # toolchain
2603 ar_default="ar"
2604 cc_default="gcc"
2605 host_cc_default="gcc"
2606 x86asmexe_default="nasm"
2607 ln_s="ln -s -f"
2608 nm_default="nm -g"
2609 pkg_config_default=pkg-config
2610 ranlib="ranlib"
2611 strip="strip"
2612 version_script='--version-script'
2613
2614 # machine
2615 arch_default=$(uname -m)
2616 cpu="generic"
2617 intrinsics="none"
2618
2619 # OS
2620 target_os_default=$(tolower $(uname -s))
2621 host_os=$target_os_default
2622
2623 # configurable options
2624 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2625
2626 enable asm
2627 enable debug
2628 enable doc
2629 enable faan faandct faanidct
2630 enable optimizations
2631 enable safe_bitstream_reader
2632 enable static
2633 enable swscale_alpha
2634 enable valgrind_backtrace
2635
2636 # By default, enable only those hwaccels that have no external dependencies.
2637 enable d3d11va dxva2 vda vdpau
2638
2639 # internal components are enabled by default
2640 enable $EXTRALIBS_LIST
2641
2642 # Avoid external, non-system, libraries getting enabled by dependency resolution
2643 disable $EXTERNAL_LIBRARY_LIST
2644
2645 # build settings
2646 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2647 LIBPREF="lib"
2648 LIBSUF=".a"
2649 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2650 SLIBPREF="lib"
2651 SLIBSUF=".so"
2652 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2653 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2654 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2655 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2656 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2657 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2658 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2659
2660 asflags_filter=echo
2661 cflags_filter=echo
2662 ldflags_filter=echo
2663
2664 AS_C='-c'
2665 AS_O='-o $@'
2666 CC_C='-c'
2667 CC_E='-E -o $@'
2668 CC_O='-o $@'
2669 OBJCC_C='-c'
2670 OBJCC_E='-E -o $@'
2671 OBJCC_O='-o $@'
2672 X86ASM_O='-o $@'
2673 LD_O='-o $@'
2674 LD_LIB='-l%'
2675 LD_PATH='-L'
2676 HOSTCC_C='-c'
2677 HOSTCC_E='-E -o $@'
2678 HOSTCC_O='-o $@'
2679 HOSTLD_O='-o $@'
2680
2681 host_extralibs='-lm'
2682 host_cflags_filter=echo
2683 host_ldflags_filter=echo
2684
2685 target_path='$(CURDIR)'
2686
2687 # since the object filename is not given with the -MM flag, the compiler
2688 # is only able to print the basename, and we must add the path ourselves
2689 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2690 DEPFLAGS='-MM'
2691
2692 mkdir -p avbuild
2693
2694 # find source path
2695 if test -f configure; then
2696     source_path=.
2697 else
2698     source_path=$(cd $(dirname "$0"); pwd)
2699     echo "$source_path" | grep -q '[[:blank:]]' &&
2700         die "Out of tree builds are impossible with whitespace in source path."
2701     test -e "$source_path/config.h" &&
2702         die "Out of tree builds are impossible with config.h in source dir."
2703 fi
2704
2705 for v in "$@"; do
2706     r=${v#*=}
2707     l=${v%"$r"}
2708     r=$(sh_quote "$r")
2709     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2710 done
2711
2712 find_things(){
2713     thing=$1
2714     pattern=$2
2715     file=$source_path/$3
2716     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2717 }
2718
2719 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2720 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2721 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2722 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2723 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2724 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2725 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2726 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2727 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2728
2729 find_things_extern(){
2730     thing=$1
2731     pattern=$2
2732     file=$source_path/$3
2733     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2734 }
2735
2736 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2737 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2738
2739 AVCODEC_COMPONENTS_LIST="
2740     $BSF_LIST
2741     $DECODER_LIST
2742     $ENCODER_LIST
2743     $HWACCEL_LIST
2744     $PARSER_LIST
2745 "
2746
2747 AVDEVICE_COMPONENTS_LIST="
2748     $INDEV_LIST
2749     $OUTDEV_LIST
2750 "
2751
2752 AVFILTER_COMPONENTS_LIST="
2753     $FILTER_LIST
2754 "
2755
2756 AVFORMAT_COMPONENTS_LIST="
2757     $DEMUXER_LIST
2758     $MUXER_LIST
2759     $PROTOCOL_LIST
2760 "
2761
2762 ALL_COMPONENTS="
2763     $AVCODEC_COMPONENTS_LIST
2764     $AVDEVICE_COMPONENTS_LIST
2765     $AVFILTER_COMPONENTS_LIST
2766     $AVFORMAT_COMPONENTS_LIST
2767 "
2768
2769 for n in $COMPONENT_LIST; do
2770     v=$(toupper ${n%s})_LIST
2771     eval enable \$$v
2772     eval ${n}_if_any="\$$v"
2773 done
2774
2775 enable $ARCH_EXT_LIST
2776
2777 die_unknown(){
2778     echo "Unknown option \"$1\"."
2779     echo "See $0 --help for available options."
2780     exit 1
2781 }
2782
2783 print_3_columns() {
2784     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2785 }
2786
2787 show_list() {
2788     suffix=_$1
2789     shift
2790     echo $* | sed s/$suffix//g | print_3_columns
2791     exit 0
2792 }
2793
2794 rand_list(){
2795     IFS=', '
2796     set -- $*
2797     unset IFS
2798     for thing; do
2799         comp=${thing%:*}
2800         prob=${thing#$comp}
2801         prob=${prob#:}
2802         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2803         echo "prob ${prob:-0.5}"
2804         printf '%s\n' $comp
2805     done
2806 }
2807
2808 do_random(){
2809     action=$1
2810     shift
2811     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2812     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2813 }
2814
2815 for opt do
2816     optval="${opt#*=}"
2817     case "$opt" in
2818         --extra-ldflags=*)
2819             add_ldflags $optval
2820         ;;
2821         --extra-ldexeflags=*)
2822             add_ldexeflags $optval
2823         ;;
2824         --extra-ldsoflags=*)
2825             add_ldsoflags $optval
2826         ;;
2827         --extra-libs=*)
2828             add_extralibs $optval
2829         ;;
2830         --disable-devices)
2831             disable $INDEV_LIST $OUTDEV_LIST
2832         ;;
2833         --enable-debug=*)
2834             debuglevel="$optval"
2835         ;;
2836         --disable-programs)
2837             disable $PROGRAM_LIST
2838         ;;
2839         --disable-everything)
2840             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2841         ;;
2842         --disable-all)
2843             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2844             disable $LIBRARY_LIST $PROGRAM_LIST doc
2845         ;;
2846         --enable-random|--disable-random)
2847             action=${opt%%-random}
2848             do_random ${action#--} $COMPONENT_LIST
2849         ;;
2850         --enable-random=*|--disable-random=*)
2851             action=${opt%%-random=*}
2852             do_random ${action#--} $optval
2853         ;;
2854         --enable-*=*|--disable-*=*)
2855             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2856             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2857             eval list=\$$(toupper $thing)_LIST
2858             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2859             $action $(filter "$name" $list)
2860         ;;
2861         --enable-avserver|--disable-avserver*)
2862             warn "avserver has been removed, the ${opt} option is only"\
2863                  "provided for compatibility and will be removed in the future"
2864         ;;
2865         --enable-yasm|--disable-yasm)
2866             warn "The ${opt} option is only provided for compatibility and will be\n"\
2867                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2868             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2869         ;;
2870         --enable-?*|--disable-?*)
2871             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2872             if is_in $option $COMPONENT_LIST; then
2873                 test $action = disable && action=unset
2874                 eval $action \$$(toupper ${option%s})_LIST
2875             elif is_in $option $CMDLINE_SELECT; then
2876                 $action $option
2877             else
2878                 die_unknown $opt
2879             fi
2880         ;;
2881         --list-*)
2882             NAME="${opt#--list-}"
2883             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2884             NAME=${NAME%s}
2885             eval show_list $NAME \$$(toupper $NAME)_LIST
2886         ;;
2887         --help|-h) show_help
2888         ;;
2889         --quiet|-q) quiet=yes
2890         ;;
2891         *)
2892             optname="${opt%%=*}"
2893             optname="${optname#--}"
2894             optname=$(echo "$optname" | sed 's/-/_/g')
2895             if is_in $optname $CMDLINE_SET; then
2896                 eval $optname='$optval'
2897             elif is_in $optname $CMDLINE_APPEND; then
2898                 append $optname "$optval"
2899             else
2900                 die_unknown $opt
2901             fi
2902         ;;
2903     esac
2904 done
2905
2906 for e in $env; do
2907     eval "export $e"
2908 done
2909
2910 disabled logging && logfile=/dev/null
2911
2912 # Die early if licensing-related configure options are incompatible.
2913 die_license_disabled() {
2914     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2915 }
2916
2917 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2918 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2919 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2920
2921 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2922
2923 enabled_all gnutls openssl &&
2924     die "GnuTLS and OpenSSL must not be enabled at the same time."
2925
2926 # Disable all the library-specific components if the library itself
2927 # is disabled, see AVCODEC_LIST and following _LIST variables.
2928
2929 disable_components(){
2930     disabled ${1} && disable $(
2931         eval components="\$$(toupper ${1})_COMPONENTS"
2932         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2933     )
2934 }
2935
2936 map 'disable_components $v' $LIBRARY_LIST
2937
2938 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2939 set >> $logfile
2940
2941 case "$toolchain" in
2942     *-asan)
2943         cc_default="${toolchain%-asan}"
2944         add_cflags  -fsanitize=address
2945         add_ldflags -fsanitize=address
2946     ;;
2947     *-msan)
2948         cc_default="${toolchain%-msan}"
2949         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2950         add_ldflags -fsanitize=memory
2951     ;;
2952     *-tsan)
2953         cc_default="${toolchain%-tsan}"
2954         add_cflags  -fsanitize=thread -fPIE
2955         add_ldflags -fsanitize=thread -pie
2956         case "$toolchain" in
2957             gcc-tsan)
2958                 add_cflags  -fPIC
2959                 add_ldflags -fPIC
2960                 ;;
2961         esac
2962     ;;
2963     *-usan)
2964         cc_default="${toolchain%-usan}"
2965         add_cflags  -fsanitize=undefined
2966         add_ldflags -fsanitize=undefined
2967         case "$toolchain" in
2968             clang-usan)
2969                 add_cflags -O1
2970                 ;;
2971         esac
2972     ;;
2973     valgrind-*)
2974         target_exec_default="valgrind"
2975         case "$toolchain" in
2976             valgrind-massif)
2977                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2978                 ;;
2979             valgrind-memcheck)
2980                 target_exec_args="--track-origins=yes --leak-check=full"
2981                 ;;
2982         esac
2983     ;;
2984     msvc)
2985         # Check whether the current MSVC version needs the C99 converter.
2986         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2987         # support enough of C99 to build libav. Default to the new
2988         # behaviour if the regexp was unable to match anything, since this
2989         # successfully parses the version number of existing supported
2990         # versions that require the converter (MSVC 2010 and 2012).
2991         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2992         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2993             cc_default="cl"
2994         else
2995             cc_default="c99wrap cl"
2996         fi
2997         ld_default="$source_path/compat/windows/mslink"
2998         nm_default="dumpbin -symbols"
2999         ar_default="lib"
3000         case "$arch" in
3001         arm*)
3002             as_default="armasm"
3003             ;;
3004         esac
3005         target_os_default="win32"
3006         # Use a relative path for TMPDIR. This makes sure all the
3007         # ffconf temp files are written with a relative path, avoiding
3008         # issues with msys/win32 path conversion for MSVC parameters
3009         # such as -Fo<file> or -out:<file>.
3010         TMPDIR=.
3011     ;;
3012     icl)
3013         cc_default="icl"
3014         ld_default="xilink"
3015         nm_default="dumpbin -symbols"
3016         ar_default="xilib"
3017         target_os_default="win32"
3018         TMPDIR=.
3019     ;;
3020     gcov)
3021         add_cflags  -fprofile-arcs -ftest-coverage
3022         add_ldflags -fprofile-arcs -ftest-coverage
3023     ;;
3024     llvm-cov)
3025         add_cflags -fprofile-arcs -ftest-coverage
3026         add_ldflags --coverage
3027     ;;
3028     hardened)
3029         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3030         add_cflags   -fno-strict-overflow -fstack-protector-all
3031         add_ldflags  -Wl,-z,relro -Wl,-z,now
3032     ;;
3033     ?*)
3034         die "Unknown toolchain $toolchain"
3035     ;;
3036 esac
3037
3038 test -n "$cross_prefix" && enable cross_compile
3039
3040 if enabled cross_compile; then
3041     test -n "$arch" && test -n "$target_os" ||
3042         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3043 fi
3044
3045 ar_default="${cross_prefix}${ar_default}"
3046 cc_default="${cross_prefix}${cc_default}"
3047 objcc_default="${cross_prefix}${objcc_default}"
3048 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3049 nm_default="${cross_prefix}${nm_default}"
3050 pkg_config_default="${cross_prefix}${pkg_config_default}"
3051 ranlib="${cross_prefix}${ranlib}"
3052 strip="${cross_prefix}${strip}"
3053
3054 sysinclude_default="${sysroot}/usr/include"
3055
3056 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3057 enabled cross_compile || host_cc_default=$cc
3058 set_default host_cc
3059
3060 if ! $pkg_config --version >/dev/null 2>&1; then
3061     warn "$pkg_config not found, library detection may fail."
3062     pkg_config=false
3063 fi
3064
3065 exesuf() {
3066     case $1 in
3067         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3068     esac
3069 }
3070
3071 EXESUF=$(exesuf $target_os)
3072 HOSTEXESUF=$(exesuf $host_os)
3073
3074 # set temporary file name
3075 : ${TMPDIR:=$TEMPDIR}
3076 : ${TMPDIR:=$TMP}
3077 : ${TMPDIR:=/tmp}
3078
3079 if ! check_cmd mktemp -u XXXXXX; then
3080     # simple replacement for missing mktemp
3081     # NOT SAFE FOR GENERAL USE
3082     mktemp(){
3083         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3084         echo "$tmpname"
3085         mkdir "$tmpname"
3086     }
3087 fi
3088
3089 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3090     die "Unable to create temporary directory in $TMPDIR."
3091
3092 tmpfile(){
3093     tmp="${AVTMPDIR}/test"$2
3094     (set -C; exec > $tmp) 2> /dev/null ||
3095         die "Unable to create temporary file in $AVTMPDIR."
3096     eval $1=$tmp
3097 }
3098
3099 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3100 trap 'exit 2' INT
3101
3102 tmpfile TMPASM .asm
3103 tmpfile TMPC   .c
3104 tmpfile TMPE   $EXESUF
3105 tmpfile TMPH   .h
3106 tmpfile TMPO   .o
3107 tmpfile TMPS   .S
3108 tmpfile TMPSH  .sh
3109 tmpfile TMPV   .ver
3110
3111 unset -f mktemp
3112
3113 chmod +x $TMPE
3114
3115 # make sure we can execute files in $TMPDIR
3116 cat > $TMPSH 2>> $logfile <<EOF
3117 #! /bin/sh
3118 EOF
3119 chmod +x $TMPSH >> $logfile 2>&1
3120 if ! $TMPSH >> $logfile 2>&1; then
3121     cat <<EOF
3122 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3123 variable to another directory and make sure that it is not mounted noexec.
3124 EOF
3125     die "Sanity test failed."
3126 fi
3127
3128 armasm_flags(){
3129     for flag; do
3130         case $flag in
3131             # Filter out MSVC cl.exe options from cflags that shouldn't
3132             # be passed to gas-preprocessor
3133             -M[TD]*)                                            ;;
3134             *)                  echo $flag                      ;;
3135         esac
3136    done
3137 }
3138
3139 ccc_flags(){
3140     for flag; do
3141         case $flag in
3142             -std=c99)           echo -c99                       ;;
3143             -mcpu=*)            echo -arch ${flag#*=}           ;;
3144             -mieee)             echo -ieee                      ;;
3145             -O*|-fast)          echo $flag                      ;;
3146             -fno-math-errno)    echo -assume nomath_errno       ;;
3147             -g)                 echo -g3                        ;;
3148             -Wall)              echo -msg_enable level2         ;;
3149             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3150             -Wl,*)              echo $flag                      ;;
3151             -f*|-W*)                                            ;;
3152             *)                  echo $flag                      ;;
3153         esac
3154    done
3155 }
3156
3157 cparser_flags(){
3158     for flag; do
3159         case $flag in
3160             -Wno-switch)             echo -Wno-switch-enum ;;
3161             -Wno-format-zero-length) ;;
3162             -Wdisabled-optimization) ;;
3163             -Wno-pointer-sign)       echo -Wno-other ;;
3164             *)                       echo $flag ;;
3165         esac
3166     done
3167 }
3168
3169 msvc_common_flags(){
3170     for flag; do
3171         case $flag in
3172             # In addition to specifying certain flags under the compiler
3173             # specific filters, they must be specified here as well or else the
3174             # generic catch all at the bottom will print the original flag.
3175             -Wall)                ;;
3176             -Wextra)              ;;
3177             -std=c99)             ;;
3178             # Common flags
3179             -fomit-frame-pointer) ;;
3180             -g)                   echo -Z7 ;;
3181             -fno-math-errno)      ;;
3182             -fno-common)          ;;
3183             -fno-signed-zeros)    ;;
3184             -fPIC)                ;;
3185             -mthumb)              ;;
3186             -march=*)             ;;
3187             -lz)                  echo zlib.lib ;;
3188             -lx264)               echo libx264.lib ;;
3189             -l*)                  echo ${flag#-l}.lib ;;
3190             -L*)                  echo -libpath:${flag#-L} ;;
3191             *)                    echo $flag ;;
3192         esac
3193     done
3194 }
3195
3196 msvc_flags(){
3197     msvc_common_flags "$@"
3198     for flag; do
3199         case $flag in
3200             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3201                                        -wd4554 ;;
3202             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3203                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3204                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3205                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3206         esac
3207     done
3208 }
3209
3210 icl_flags(){
3211     msvc_common_flags "$@"
3212     for flag; do
3213         case $flag in
3214             # Despite what Intel's documentation says -Wall, which is supported
3215             # on Windows, does enable remarks so disable them here.
3216             -Wall)                echo $flag -Qdiag-disable:remark ;;
3217             -std=c99)             echo -Qstd=c99 ;;
3218         esac
3219     done
3220 }
3221
3222 pgi_flags(){
3223     for flag; do
3224         case $flag in
3225             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3226             -fomit-frame-pointer) echo -Mnoframe ;;
3227             -g)                   echo -gopt ;;
3228             *)                    echo $flag ;;
3229         esac
3230     done
3231 }
3232
3233 suncc_flags(){
3234     for flag; do
3235         case $flag in
3236             -march=*|-mcpu=*)
3237                 case "${flag#*=}" in
3238                     native)                   echo -xtarget=native       ;;
3239                     v9|niagara)               echo -xarch=sparc          ;;
3240                     ultrasparc)               echo -xarch=sparcvis       ;;
3241                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3242                     i586|pentium)             echo -xchip=pentium        ;;
3243                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3244                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3245                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3246                     pentium4*)          echo -xtarget=pentium4           ;;
3247                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3248                     *-sse3)             echo -xarch=sse3                 ;;
3249                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3250                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3251                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3252                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3253                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3254                     k8|opteron|athlon64|athlon-fx)
3255                                                echo -xarch=sse2a         ;;
3256                     athlon*)                   echo -xarch=pentium_proa  ;;
3257                 esac
3258                 ;;
3259             -std=c99)             echo -xc99              ;;
3260             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3261             -fPIC)                echo -KPIC -xcode=pic32 ;;
3262             -W*,*)                echo $flag              ;;
3263             -f*-*|-W*|-mimpure-text)                      ;;
3264             -shared)              echo -G                 ;;
3265             *)                    echo $flag              ;;
3266         esac
3267     done
3268 }
3269
3270 tms470_flags(){
3271     for flag; do
3272         case $flag in
3273             -march=*|-mcpu=*)
3274                 case "${flag#*=}" in
3275                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3276                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3277                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3278                     armv6*|arm11*)          echo -mv=6   ;;
3279                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3280                                             echo -mv=5e  ;;
3281                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3282                 esac
3283                 ;;
3284             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3285             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3286             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3287             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3288             -msoft-float)   echo --float_support=vfplib       ;;
3289             -O[0-3]|-mf=*)  echo $flag                        ;;
3290             -g)             echo -g -mn                       ;;
3291             -pds=*)         echo $flag                        ;;
3292             -D*|-I*)        echo $flag                        ;;
3293             --gcc|--abi=*)  echo $flag                        ;;
3294             -me)            echo $flag                        ;;
3295         esac
3296     done
3297 }
3298
3299 probe_cc(){
3300     pfx=$1
3301     _cc=$2
3302
3303     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3304     unset _ld_o _ldflags _ld_lib _ld_path
3305     unset _depflags _DEPCMD _DEPFLAGS
3306     _flags_filter=echo
3307
3308     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3309         _type=llvm_gcc
3310         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3311         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3312         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3313         _cflags_speed='-O3'
3314         _cflags_size='-Os'
3315     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3316         _type=gcc
3317         gcc_version=$($_cc --version | head -n1)
3318         gcc_basever=$($_cc -dumpversion)
3319         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3320         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3321         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3322         if ! $_cc -dumpversion | grep -q '^2\.'; then
3323             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3324         fi
3325         _cflags_speed='-O3'
3326         _cflags_size='-Os'
3327     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3328         _type=icc
3329         _ident=$($_cc --version | head -n1)
3330         _depflags='-MMD'
3331         _cflags_speed='-O3'
3332         _cflags_size='-Os'
3333         _cflags_noopt='-O1'
3334     elif $_cc -v 2>&1 | grep -q xlc; then
3335         _type=xlc
3336         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3337         _cflags_speed='-O5'
3338         _cflags_size='-O5 -qcompact'
3339     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3340         _type=ccc
3341         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3342         _DEPFLAGS='-M'
3343         _cflags_speed='-fast'
3344         _cflags_size='-O1'
3345         _flags_filter=ccc_flags
3346     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3347         test -d "$sysroot" || die "No valid sysroot specified."
3348         _type=armcc
3349         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3350         armcc_conf="$PWD/armcc.conf"
3351         $_cc --arm_linux_configure                 \
3352              --arm_linux_config_file="$armcc_conf" \
3353              --configure_sysroot="$sysroot"        \
3354              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3355              die "Error creating armcc configuration file."
3356         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3357         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3358         as_default="${cross_prefix}gcc"
3359         _depflags='-MMD'
3360         _cflags_speed='-O3'
3361         _cflags_size='-Os'
3362     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3363         _type=tms470
3364         _ident=$($_cc -version | head -n1 | tr -s ' ')
3365         _flags='--gcc --abi=eabi -me'
3366         _cc_e='-ppl -fe=$@'
3367         _cc_o='-fe=$@'
3368         _depflags='-ppa -ppd=$(@:.o=.d)'
3369         _cflags_speed='-O3 -mf=5'
3370         _cflags_size='-O3 -mf=2'
3371         _flags_filter=tms470_flags
3372     elif $_cc -v 2>&1 | grep -q clang; then
3373         _type=clang
3374         _ident=$($_cc --version 2>/dev/null | head -n1)
3375         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3376         _cflags_speed='-O3'
3377         _cflags_size='-Os'
3378     elif $_cc -V 2>&1 | grep -q Sun; then
3379         _type=suncc
3380         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3381         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3382         _DEPFLAGS='-xM1 -xc99'
3383         _ldflags='-std=c99'
3384         _cflags_speed='-O5'
3385         _cflags_size='-O5 -xspace'
3386         _flags_filter=suncc_flags
3387     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3388         _type=pathscale
3389         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3390         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3391         _cflags_speed='-O2'
3392         _cflags_size='-Os'
3393         _flags_filter='filter_out -Wdisabled-optimization'
3394     elif $_cc -v 2>&1 | grep -q Open64; then
3395         _type=open64
3396         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3397         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3398         _cflags_speed='-O2'
3399         _cflags_size='-Os'
3400         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3401     elif $_cc -V 2>&1 | grep -q Portland; then
3402         _type=pgi
3403         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3404         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3405         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3406         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3407         _cflags_noopt="-O1"
3408         _flags_filter=pgi_flags
3409     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3410         _type=armasm
3411         _ident=$($_cc | head -n1)
3412         # 4509: "This form of conditional instruction is deprecated"
3413         _flags="-nologo -ignore 4509"
3414         _flags_filter=armasm_flags
3415     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3416         _type=msvc
3417         _ident=$($_cc 2>&1 | head -n1)
3418         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3419         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3420         _cflags_speed="-O2"
3421         _cflags_size="-O1"
3422         _cflags_noopt="-O1"
3423         if $_cc -nologo- 2>&1 | grep -q Linker; then
3424             _ld_o='-out:$@'
3425         else
3426             _ld_o='-Fe$@'
3427         fi
3428         _cc_o='-Fo$@'
3429         _cc_e='-P -Fi$@'
3430         _flags_filter=msvc_flags
3431         _ld_lib='lib%.a'
3432         _ld_path='-libpath:'
3433         _flags='-nologo'
3434     elif $_cc 2>&1 | grep -q Intel; then
3435         _type=icl
3436         _ident=$($_cc 2>&1 | head -n1)
3437         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3438         # Not only is O3 broken on 13.x+ but it is slower on all previous
3439         # versions (tested) as well.
3440         _cflags_speed="-O2"
3441         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3442         if $_cc 2>&1 | grep -q Linker; then
3443             _ld_o='-out:$@'
3444         else
3445             _ld_o='-Fe$@'
3446         fi
3447         _cc_o='-Fo$@'
3448         _cc_e='-P'
3449         _flags_filter=icl_flags
3450         _ld_lib='lib%.a'
3451         _ld_path='-libpath:'
3452         # -Qdiag-error to make icl error when seeing certain unknown arguments
3453         _flags='-nologo -Qdiag-error:4044,10157'
3454         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3455         # with MSVC which enables it by default.
3456         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3457     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3458         # lld can emulate multiple different linkers; in ms link.exe mode,
3459         # the -? parameter gives the help output which contains an identifyable
3460         # string, while it gives an error in other modes.
3461         _type=lld-link
3462         # The link.exe mode doesn't have a switch for getting the version,
3463         # but we can force it back to gnu mode and get the version from there.
3464         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3465         _ld_o='-out:$@'
3466         _flags_filter=msvc_flags
3467         _ld_lib='lib%.a'
3468         _ld_path='-libpath:'
3469     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3470         _type=cparser
3471         _ident=$($_cc --version | head -n1)
3472         _depflags='-MMD'
3473         _cflags_speed='-O4'
3474         _cflags_size='-O2'
3475         _flags_filter=cparser_flags
3476     fi
3477
3478     eval ${pfx}_type=\$_type
3479     eval ${pfx}_ident=\$_ident
3480 }
3481
3482 set_ccvars(){
3483     eval ${1}_C=\${_cc_c-\${${1}_C}}
3484     eval ${1}_E=\${_cc_e-\${${1}_E}}
3485     eval ${1}_O=\${_cc_o-\${${1}_O}}
3486
3487     if [ -n "$_depflags" ]; then
3488         eval ${1}_DEPFLAGS=\$_depflags
3489     else
3490         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3491         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3492         eval DEP${1}FLAGS=\$_flags
3493     fi
3494 }
3495
3496 probe_cc cc "$cc"
3497 cflags_filter=$_flags_filter
3498 cflags_speed=$_cflags_speed
3499 cflags_size=$_cflags_size
3500 cflags_noopt=$_cflags_noopt
3501 add_cflags $_flags $_cflags
3502 cc_ldflags=$_ldflags
3503 set_ccvars CC
3504
3505 probe_cc hostcc "$host_cc"
3506 host_cflags_filter=$_flags_filter
3507 host_cflags_speed=$_cflags_speed
3508 add_host_cflags  $_flags $_cflags
3509 set_ccvars HOSTCC
3510
3511 test -n "$cc_type" && enable $cc_type ||
3512     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3513
3514 : ${as_default:=$cc}
3515 : ${objcc_default:=$cc}
3516 : ${dep_cc_default:=$cc}
3517 : ${ld_default:=$cc}
3518 : ${host_ld_default:=$host_cc}
3519 set_default ar as objcc dep_cc ld host_ld
3520
3521 probe_cc as "$as"
3522 asflags_filter=$_flags_filter
3523 add_asflags $_flags $_cflags
3524 set_ccvars AS
3525
3526 probe_cc objcc "$objcc"
3527 objcflags_filter=$_flags_filter
3528 add_objcflags $_flags $_cflags
3529 set_ccvars OBJC
3530
3531 probe_cc ld "$ld"
3532 ldflags_filter=$_flags_filter
3533 add_ldflags $_flags $_ldflags
3534 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3535 LD_O=${_ld_o-$LD_O}
3536 LD_LIB=${_ld_lib-$LD_LIB}
3537 LD_PATH=${_ld_path-$LD_PATH}
3538
3539 probe_cc hostld "$host_ld"
3540 host_ldflags_filter=$_flags_filter
3541 add_host_ldflags $_flags $_ldflags
3542 HOSTLD_O=${_ld_o-$HOSTLD_O}
3543
3544 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3545     probe_cc depcc "$dep_cc"
3546     CCDEP=${_DEPCMD:-$DEPCMD}
3547     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3548     DEPCCFLAGS=$_flags
3549 fi
3550
3551 if $ar 2>&1 | grep -q Microsoft; then
3552     arflags="-nologo"
3553     ar_o='-out:$@'
3554 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3555     arflags="rq"
3556     ar_o='$@'
3557 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3558     arflags='-Xany -r -c'
3559     ar_o='$@'
3560 else
3561     arflags="rc"
3562     ar_o='$@'
3563 fi
3564
3565 add_cflags $extra_cflags
3566 add_objcflags $extra_objcflags
3567 add_asflags $extra_cflags
3568
3569 if test -n "$sysroot"; then
3570     case "$cc_type" in
3571         gcc|llvm_gcc|clang)
3572             add_cppflags --sysroot="$sysroot"
3573             add_ldflags --sysroot="$sysroot"
3574         ;;
3575         tms470)
3576             add_cppflags -I"$sysinclude"
3577             add_ldflags  --sysroot="$sysroot"
3578         ;;
3579     esac
3580 fi
3581
3582 if test "$cpu" = host; then
3583     enabled cross_compile &&
3584         die "--cpu=host makes no sense when cross-compiling."
3585
3586     case "$cc_type" in
3587         gcc|llvm_gcc)
3588             check_native(){
3589                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3590                 sed -n "/cc1.*$1=/{
3591                             s/.*$1=\\([^ ]*\\).*/\\1/
3592                             p
3593                             q
3594                         }" $TMPE
3595             }
3596             cpu=$(check_native -march || check_native -mcpu)
3597         ;;
3598     esac
3599
3600     test "${cpu:-host}" = host &&
3601         die "--cpu=host not supported with compiler $cc"
3602 fi
3603
3604 # Deal with common $arch aliases
3605 case "$arch" in
3606     aarch64|arm64)
3607         arch="aarch64"
3608     ;;
3609     arm*)
3610         arch="arm"
3611     ;;
3612     mips*|IP*)
3613         case "$arch" in
3614         *el)
3615             add_cppflags -EL
3616             add_ldflags -EL
3617         ;;
3618         *eb)
3619             add_cppflags -EB
3620             add_ldflags -EB
3621         ;;
3622         esac
3623         arch="mips"
3624     ;;
3625     parisc*|hppa*)
3626         arch="parisc"
3627     ;;
3628     "Power Macintosh"|ppc*|powerpc*)
3629         arch="ppc"
3630     ;;
3631     s390|s390x)
3632         arch="s390"
3633     ;;
3634     sh4|sh)
3635         arch="sh4"
3636     ;;
3637     sun4u|sparc*)
3638         arch="sparc"
3639     ;;
3640     tilegx|tile-gx)
3641         arch="tilegx"
3642     ;;
3643     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3644         arch="x86"
3645     ;;
3646 esac
3647
3648 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3649 enable $arch
3650
3651 # Add processor-specific flags
3652 if enabled aarch64; then
3653
3654     case $cpu in
3655         armv*)
3656             cpuflags="-march=$cpu"
3657         ;;
3658         *)
3659             cpuflags="-mcpu=$cpu"
3660         ;;
3661     esac
3662
3663 elif enabled alpha; then
3664
3665     cpuflags="-mcpu=$cpu"
3666
3667 elif enabled arm; then
3668
3669     check_arm_arch() {
3670         check_cpp_condition stddef.h \
3671             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3672             $cpuflags
3673     }
3674
3675     probe_arm_arch() {
3676         if   check_arm_arch 4;        then echo armv4
3677         elif check_arm_arch 4T;       then echo armv4t
3678         elif check_arm_arch 5;        then echo armv5
3679         elif check_arm_arch 5E;       then echo armv5e
3680         elif check_arm_arch 5T;       then echo armv5t
3681         elif check_arm_arch 5TE;      then echo armv5te
3682         elif check_arm_arch 5TEJ;     then echo armv5te
3683         elif check_arm_arch 6;        then echo armv6
3684         elif check_arm_arch 6J;       then echo armv6j
3685         elif check_arm_arch 6K;       then echo armv6k
3686         elif check_arm_arch 6Z;       then echo armv6z
3687         elif check_arm_arch 6ZK;      then echo armv6zk
3688         elif check_arm_arch 6T2;      then echo armv6t2
3689         elif check_arm_arch 7;        then echo armv7
3690         elif check_arm_arch 7A  7_A;  then echo armv7-a
3691         elif check_arm_arch 7S;       then echo armv7-a
3692         elif check_arm_arch 7R  7_R;  then echo armv7-r
3693         elif check_arm_arch 7M  7_M;  then echo armv7-m
3694         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3695         elif check_arm_arch 8A  8_A;  then echo armv8-a
3696         fi
3697     }
3698
3699     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3700
3701     case $cpu in
3702         armv*)
3703             cpuflags="-march=$cpu"
3704             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3705         ;;
3706         *)
3707             cpuflags="-mcpu=$cpu"
3708             case $cpu in
3709                 cortex-a*)                               subarch=armv7a  ;;
3710                 cortex-r*)                               subarch=armv7r  ;;
3711                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3712                 arm11*)                                  subarch=armv6   ;;
3713                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3714                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3715                 *)                             subarch=$(probe_arm_arch) ;;
3716             esac
3717         ;;
3718     esac
3719
3720     case "$subarch" in
3721         armv5t*)    enable fast_clz                ;;
3722         armv[6-8]*) enable fast_clz fast_unaligned ;;
3723     esac
3724
3725 elif enabled avr32; then
3726
3727     case $cpu in
3728         ap7[02]0[0-2])
3729             subarch="avr32_ap"
3730             cpuflags="-mpart=$cpu"
3731         ;;
3732         ap)
3733             subarch="avr32_ap"
3734             cpuflags="-march=$cpu"
3735         ;;
3736         uc3[ab]*)
3737             subarch="avr32_uc"
3738             cpuflags="-mcpu=$cpu"
3739         ;;
3740         uc)
3741             subarch="avr32_uc"
3742             cpuflags="-march=$cpu"
3743         ;;
3744     esac
3745
3746 elif enabled bfin; then
3747
3748     cpuflags="-mcpu=$cpu"
3749
3750 elif enabled mips; then
3751
3752     cpuflags="-march=$cpu"
3753
3754 elif enabled ppc; then
3755
3756     disable ldbrx
3757
3758     case $(tolower $cpu) in
3759         601|ppc601|powerpc601)
3760             cpuflags="-mcpu=601"
3761             disable altivec
3762         ;;
3763         603*|ppc603*|powerpc603*)
3764             cpuflags="-mcpu=603"
3765             disable altivec
3766         ;;
3767         604*|ppc604*|powerpc604*)
3768             cpuflags="-mcpu=604"
3769             disable altivec
3770         ;;
3771         g3|75*|ppc75*|powerpc75*)
3772             cpuflags="-mcpu=750"
3773             disable altivec
3774         ;;
3775         g4|745*|ppc745*|powerpc745*)
3776             cpuflags="-mcpu=7450"
3777             disable vsx
3778         ;;
3779         74*|ppc74*|powerpc74*)
3780             cpuflags="-mcpu=7400"
3781             disable vsx
3782         ;;
3783         g5|970|ppc970|powerpc970)
3784             cpuflags="-mcpu=970"
3785             disable vsx
3786         ;;
3787         power[3-6]*)
3788             cpuflags="-mcpu=$cpu"
3789             disable vsx
3790         ;;
3791         power[7-8]*)
3792             cpuflags="-mcpu=$cpu"
3793             enable ldbrx
3794         ;;
3795         cell)
3796             cpuflags="-mcpu=cell"
3797             enable ldbrx
3798             disable vsx
3799         ;;
3800         e500mc)
3801             cpuflags="-mcpu=e500mc"
3802             disable altivec
3803         ;;
3804         e500v2)
3805             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3806             disable altivec
3807             disable dcbzl
3808         ;;
3809         e500)
3810             cpuflags="-mcpu=8540 -mhard-float"
3811             disable altivec
3812             disable dcbzl
3813         ;;
3814     esac
3815
3816 elif enabled sparc; then
3817
3818     case $cpu in
3819         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3820             cpuflags="-mcpu=$cpu"
3821         ;;
3822         ultrasparc*|niagara[234])
3823             cpuflags="-mcpu=$cpu"
3824         ;;
3825     esac
3826
3827 elif enabled x86; then
3828
3829     case $cpu in
3830         i[345]86|pentium)
3831             cpuflags="-march=$cpu"
3832             disable i686
3833             disable mmx
3834         ;;
3835         # targets that do NOT support nopl and conditional mov (cmov)
3836         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3837             cpuflags="-march=$cpu"
3838             disable i686
3839         ;;
3840         # targets that do support nopl and conditional mov (cmov)
3841         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3842             cpuflags="-march=$cpu"
3843             enable i686
3844             enable fast_cmov
3845         ;;
3846         # targets that do support conditional mov but on which it's slow
3847         pentium4|pentium4m|prescott|nocona)
3848             cpuflags="-march=$cpu"
3849             enable i686
3850             disable fast_cmov
3851         ;;
3852     esac
3853
3854 fi
3855
3856 if [ "$cpu" != generic ]; then
3857     add_cflags  $cpuflags
3858     add_asflags $cpuflags
3859     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3860 fi
3861
3862 # compiler sanity check
3863 check_exec <<EOF
3864 int main(void){ return 0; }
3865 EOF
3866 if test "$?" != 0; then
3867     echo "$cc is unable to create an executable file."
3868     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3869         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3870         echo "Only do this if you know what cross compiling means."
3871     fi
3872     die "C compiler test failed."
3873 fi
3874
3875 add_cppflags -D_ISOC99_SOURCE
3876
3877 # some compilers silently accept -std=c11, so we also need to check that the
3878 # version macro is defined properly
3879 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3880     add_cflags -std=c11 ||
3881     check_cflags -std=c99
3882
3883 check_cppflags -D_FILE_OFFSET_BITS=64
3884 check_cppflags -D_LARGEFILE_SOURCE
3885
3886 add_host_cppflags -D_ISOC99_SOURCE
3887 check_host_cflags -std=c99
3888 check_host_cflags -Wall
3889 check_host_cflags $host_cflags_speed
3890
3891 check_64bit(){
3892     arch32=$1
3893     arch64=$2
3894     expr=$3
3895     check_code cc "" "int test[2*($expr) - 1]" &&
3896         subarch=$arch64 || subarch=$arch32
3897 }
3898
3899 case "$arch" in
3900     aarch64|alpha|ia64)
3901         spic=$shared
3902     ;;
3903     mips)
3904         check_64bit mips mips64 '_MIPS_SIM > 1'
3905         spic=$shared
3906     ;;
3907     parisc)
3908         check_64bit parisc parisc64 'sizeof(void *) > 4'
3909         spic=$shared
3910     ;;
3911     ppc)
3912         check_64bit ppc ppc64 'sizeof(void *) > 4'
3913         spic=$shared
3914     ;;
3915     s390)
3916         check_64bit s390 s390x 'sizeof(void *) > 4'
3917         spic=$shared
3918     ;;
3919     sparc)
3920         check_64bit sparc sparc64 'sizeof(void *) > 4'
3921         spic=$shared
3922     ;;
3923     x86)
3924         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3925         if test "$subarch" = "x86_64"; then
3926             spic=$shared
3927         fi
3928     ;;
3929 esac
3930
3931 enable $subarch
3932 enabled spic && enable_weak pic
3933
3934 enabled x86_64 && objformat=elf64 || objformat="elf32"
3935
3936 # OS specific
3937 case $target_os in
3938     aix)
3939         SHFLAGS=-shared
3940         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3941         enabled shared && add_ldflags -Wl,-brtl
3942         ;;
3943     android)
3944         disable symver
3945         enable section_data_rel_ro
3946         SLIB_INSTALL_NAME='$(SLIBNAME)'
3947         SLIB_INSTALL_LINKS=
3948         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3949         ;;
3950     haiku)
3951         prefix_default="/boot/common"
3952         network_extralibs="-lnetwork"
3953         host_extralibs=
3954         ;;
3955     sunos)
3956         SHFLAGS='-shared -Wl,-h,$$(@F)'
3957         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3958         network_extralibs="-lsocket -lnsl"
3959         # When using suncc to build, the Solaris linker will mark
3960         # an executable with each instruction set encountered by
3961         # the Solaris assembler.  As our libraries contain their own
3962         # guards for processor-specific code, instead suppress
3963         # generation of the HWCAPS ELF section on Solaris x86 only.
3964         enabled_all suncc x86 &&
3965             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3966             add_ldflags -Wl,-M,mapfile
3967         nm_default='nm -P -g'
3968         version_script='-M'
3969         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3970         ;;
3971     netbsd)
3972         disable symver
3973         oss_indev_extralibs="-lossaudio"
3974         oss_outdev_extralibs="-lossaudio"
3975         ;;
3976     openbsd|bitrig)
3977         disable symver
3978         SHFLAGS='-shared'
3979         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3980         SLIB_INSTALL_LINKS=
3981         oss_indev_extralibs="-lossaudio"
3982         oss_outdev_extralibs="-lossaudio"
3983         ;;
3984     dragonfly)
3985         disable symver
3986         ;;
3987     freebsd)
3988         ;;
3989     bsd/os)
3990         add_extralibs -lpoll -lgnugetopt
3991         ;;
3992     darwin)
3993         enabled ppc && add_asflags -force_cpusubtype_ALL
3994         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3995         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3996         add_ldflags -Wl,-dynamic,-search_paths_first
3997         check_cflags -Werror=partial-availability
3998         SLIBSUF=".dylib"
3999         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
4000         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
4001         enabled x86_64 && objformat="macho64" || objformat="macho32"
4002         enabled_any pic shared ||
4003             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4004         check_header dispatch/dispatch.h &&
4005             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4006         if test -n "$sysroot"; then
4007             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
4008             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
4009         fi
4010         ;;
4011     msys*)
4012         die "Native MSYS builds are discouraged, please use the MINGW environment."
4013         ;;
4014     mingw32*|mingw64*)
4015         if test $target_os = "mingw32ce"; then
4016             disable network
4017         else
4018             target_os=mingw32
4019         fi
4020         LIBTARGET=i386
4021         if enabled x86_64; then
4022             LIBTARGET="i386:x86-64"
4023         elif enabled arm; then
4024             LIBTARGET=arm-wince
4025         fi
4026         check_ldflags -Wl,--nxcompat
4027         check_ldflags -Wl,--dynamicbase
4028         shlibdir_default="$bindir_default"
4029         SLIBPREF=""
4030         SLIBSUF=".dll"
4031         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4032         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4033         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4034         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4035         SLIB_INSTALL_LINKS=
4036         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4037         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4038         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4039         enabled x86_64 && objformat="win64" || objformat="win32"
4040         dlltool="${cross_prefix}dlltool"
4041         ranlib=:
4042         enable dos_paths
4043         ;;
4044     win32|win64)
4045         disable symver
4046         if enabled shared; then
4047             # Link to the import library instead of the normal static library
4048             # for shared libs.
4049             LD_LIB='%.lib'
4050             # Cannot build both shared and static libs with MSVC or icl.
4051             disable static
4052         fi
4053         shlibdir_default="$bindir_default"
4054         SLIBPREF=""
4055         SLIBSUF=".dll"
4056         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4057         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4058         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4059         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4060         SLIB_INSTALL_LINKS=
4061         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4062         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4063         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4064         enabled x86_64 && objformat="win64" || objformat="win32"
4065         ranlib=:
4066         enable dos_paths
4067         ;;
4068     cygwin*)
4069         target_os=cygwin
4070         shlibdir_default="$bindir_default"
4071         SLIBPREF="cyg"
4072         SLIBSUF=".dll"
4073         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4074         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4075         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4076         SLIB_INSTALL_LINKS=
4077         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4078         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4079         enabled x86_64 && objformat="win64" || objformat="win32"
4080         enable dos_paths
4081         ;;
4082     *-dos|freedos|opendos)
4083         network_extralibs="-lsocket"
4084         objformat="coff"
4085         enable dos_paths
4086         add_cppflags -U__STRICT_ANSI__
4087         ;;
4088     linux)
4089         enable dv1394
4090         enable section_data_rel_ro
4091         ;;
4092     irix*)
4093         target_os=irix
4094         ranlib="echo ignoring ranlib"
4095         ;;
4096     os/2*)
4097         ln_s="cp -f"
4098         objformat="aout"
4099         add_cppflags -D_GNU_SOURCE
4100         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4101         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4102         LIBSUF="_s.a"
4103         SLIBPREF=""
4104         SLIBSUF=".dll"
4105         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4106         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4107         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4108             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4109             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4110             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4111             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4112         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4113             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4114         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4115         enable dos_paths
4116         ;;
4117     gnu/kfreebsd)
4118         add_cppflags -D_BSD_SOURCE
4119         ;;
4120     gnu)
4121         ;;
4122     qnx)
4123         add_cppflags -D_QNX_SOURCE
4124         network_extralibs="-lsocket"
4125         ;;
4126     symbian)
4127         SLIBSUF=".dll"
4128         enable dos_paths
4129         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4130         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4131         add_ldflags -Wl,--target1-abs,--no-undefined \
4132                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4133                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4134         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4135                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4136                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4137         ;;
4138     osf1)
4139         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4140         ;;
4141     minix)
4142         ;;
4143     none)
4144         ;;
4145     *)
4146         die "Unknown OS '$target_os'."
4147         ;;
4148 esac
4149
4150 # determine libc flavour
4151
4152 probe_libc(){
4153     pfx=$1
4154     pfx_no_=${pfx%_}
4155     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4156     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4157         eval ${pfx}libc_type=uclibc
4158         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4159     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4160         eval ${pfx}libc_type=glibc
4161         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4162     # MinGW headers can be installed on Cygwin, so check for newlib first.
4163     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4164         eval ${pfx}libc_type=newlib
4165         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4166     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4167     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4168         eval ${pfx}libc_type=mingw64
4169         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4170         eval test \$${pfx_no_}cc_type = "gcc" &&
4171             add_${pfx}cppflags -D__printf__=__gnu_printf__
4172     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4173          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4174         eval ${pfx}libc_type=mingw32
4175         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4176             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4177             die "ERROR: MinGW32 runtime version must be >= 3.15."
4178         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4179         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4180             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4181         check_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4182             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4183         eval test \$${pfx_no_}cc_type = "gcc" &&
4184             add_${pfx}cppflags -D__printf__=__gnu_printf__
4185     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4186         eval ${pfx}libc_type=msvcrt
4187         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4188             if [ "$pfx" = host_ ]; then
4189                 add_host_cppflags -Dsnprintf=_snprintf
4190             else
4191                 add_compat strtod.o strtod=avpriv_strtod
4192                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4193                                              _snprintf=avpriv_snprintf  \
4194                                              vsnprintf=avpriv_vsnprintf
4195             fi
4196         fi
4197         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4198         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4199         # 0x601 by default unless something else is set by the user.
4200         # This can easily lead to us detecting functions only present
4201         # in such new versions and producing binaries requiring windows 7.0.
4202         # Therefore explicitly set the default to XP unless the user has
4203         # set something else on the command line.
4204         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4205         # family. For these cases, configure is free to use any functions
4206         # found in the SDK headers by default. (Alternatively, we could force
4207         # _WIN32_WINNT to 0x0602 in that case.)
4208         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4209             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4210 #ifdef WINAPI_FAMILY
4211 #include <winapifamily.h>
4212 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4213 #error not desktop
4214 #endif
4215 #endif
4216 EOF
4217         if [ "$pfx" = "" ]; then
4218             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4219         fi
4220     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4221         eval ${pfx}libc_type=klibc
4222     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4223         eval ${pfx}libc_type=bionic
4224     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4225         eval ${pfx}libc_type=solaris
4226         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4227     else
4228         eval ${pfx}libc_type=default
4229         add_${pfx}cppflags -D_DEFAULT_SOURCE
4230     fi
4231 }
4232
4233 probe_libc
4234 test -n "$libc_type" && enable libc_$libc_type
4235 probe_libc host_
4236 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4237
4238 # hacks for compiler/libc/os combinations
4239
4240 case $libc_type in
4241     bionic)
4242         add_compat strtod.o strtod=avpriv_strtod
4243         ;;
4244     glibc)
4245         if enabled tms470; then
4246             CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4247             add_cppflags -D__USER_LABEL_PREFIX__=
4248             add_cppflags -D__builtin_memset=memset
4249             add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4250             add_cflags   -pds=48    # incompatible redefinition of macro
4251         elif enabled ccc; then
4252             add_ldflags -Wl,-z,now  # calls to libots crash without this
4253         fi
4254         ;;
4255 esac
4256
4257 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4258     add_cppflags '-I\$(SRC_PATH)/compat/float'
4259
4260 esc(){
4261     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4262 }
4263
4264 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4265
4266 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4267
4268 set_default $PATHS_LIST
4269 set_default nm
4270
4271 # we need to build at least one lib type
4272 if ! enabled_any static shared; then
4273     cat <<EOF
4274 At least one library type must be built.
4275 Specify --enable-static to build the static libraries or --enable-shared to
4276 build the shared libraries as well. To only build the shared libraries specify
4277 --disable-static in addition to --enable-shared.
4278 EOF
4279     exit 1
4280 fi
4281
4282 disabled optimizations || check_cflags -fomit-frame-pointer
4283
4284 enable_weak_pic() {
4285     disabled pic && return
4286     enable pic
4287     add_cppflags -DPIC
4288     case "$target_os" in
4289     mingw*|cygwin*)
4290         ;;
4291     *)
4292         add_cflags -fPIC
4293         ;;
4294     esac
4295     add_asflags  -fPIC
4296 }
4297
4298 enabled pic && enable_weak_pic
4299
4300 check_cc <<EOF || die "Symbol mangling check failed."
4301 int ff_extern;
4302 EOF
4303 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4304 extern_prefix=${sym%%ff_extern*}
4305
4306 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4307
4308 _restrict=
4309 for restrict_keyword in restrict __restrict__ __restrict; do
4310     check_cc <<EOF && _restrict=$restrict_keyword && break
4311 void foo(char * $restrict_keyword p);
4312 EOF
4313 done
4314
4315 check_cc <<EOF && enable pragma_deprecated
4316 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4317 EOF
4318
4319 check_cc <<EOF && enable attribute_packed
4320 struct { int x; } __attribute__((packed)) x;
4321 EOF
4322
4323 check_cc <<EOF && enable attribute_may_alias
4324 union { int x; } __attribute__((may_alias)) x;
4325 EOF
4326
4327 check_cc <<EOF || die "endian test failed"
4328 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4329 EOF
4330 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4331
4332 check_gas() {
4333     log "check_gas using '$as' as AS"
4334     # :vararg is used on aarch64, arm and ppc altivec
4335     check_as <<EOF || return 1
4336 .macro m n, y:vararg=0
4337 \n: .int \y
4338 .endm
4339 m x
4340 EOF
4341     # .altmacro is only used in arm asm
4342     ! enabled arm || check_as <<EOF || return 1
4343 .altmacro
4344 EOF
4345     enable gnu_as
4346     return 0
4347 }
4348
4349 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4350     nogas=:
4351     enabled_any arm aarch64 && nogas=die
4352     enabled_all ppc altivec && nogas=warn
4353     as_noop=-v
4354
4355     case $as_type in
4356         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4357         gcc)  gaspp_as_type=gas ;;
4358         *)    gaspp_as_type=$as_type ;;
4359     esac
4360
4361     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4362
4363     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4364         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4365
4366     if ! check_gas ; then
4367         as=${gas:=$as}
4368         check_gas || \
4369             $nogas "GNU assembler not found, install/update gas-preprocessor"
4370     fi
4371
4372     check_as <<EOF && enable as_func
4373 .func test
4374 .endfunc
4375 EOF
4376 fi
4377
4378 check_inline_asm inline_asm_labels '"1:\n"'
4379
4380 if enabled aarch64; then
4381     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4382     # internal assembler in clang 3.3 does not support this instruction
4383     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4384     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4385
4386     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4387
4388 elif enabled alpha; then
4389
4390     check_cflags -mieee
4391
4392 elif enabled arm; then
4393
4394     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4395     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4396     enabled thumb && check_cflags -mthumb || check_cflags -marm
4397
4398     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4399         enable vfp_args
4400     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4401         enable vfp_args
4402     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4403         case "${cross_prefix:-$cc}" in
4404             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4405             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4406 __asm__ (".eabi_attribute 28, 1");
4407 int main(void) { return 0; }
4408 EOF
4409         esac
4410         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4411     fi
4412
4413     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4414     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4415     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4416     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4417     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4418     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4419
4420     [ $target_os = linux ] || [ $target_os = android ] ||
4421         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4422             $ARCH_EXT_LIST_ARM
4423
4424     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4425
4426     check_as <<EOF && enable as_arch_directive
4427 .arch armv7-a
4428 EOF
4429     check_as <<EOF && enable as_fpu_directive
4430 .fpu neon
4431 EOF
4432
4433     # llvm's integrated assembler supports .object_arch from llvm 3.5
4434     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4435         check_as <<EOF && enable as_object_arch
4436 .object_arch armv4
4437 EOF
4438
4439     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4440
4441 elif enabled mips; then
4442
4443     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4444
4445     # make sure that only an instruction set is enabled
4446     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4447
4448     if enabled mips64; then
4449         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4450             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4451                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4452     else
4453         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4454             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4455                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4456     fi
4457
4458 elif enabled parisc; then
4459
4460     if enabled gcc; then
4461         case $($cc -dumpversion) in
4462             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4463         esac
4464     fi
4465
4466 elif enabled ppc; then
4467
4468     enable local_aligned_8 local_aligned_16 local_aligned_32
4469
4470     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4471     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4472     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4473     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4474
4475     if enabled altivec; then
4476         check_cflags -maltivec -mabi=altivec
4477
4478         # check if our compiler supports Motorola AltiVec C API
4479         check_code cc altivec.h "vector signed int v1 = (vector signed int) { 0 };
4480                                  vector signed int v2 = (vector signed int) { 1 };
4481                                  v1 = vec_add(v1, v2);" ||
4482             disable altivec
4483
4484         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4485     fi
4486
4487     if enabled vsx; then
4488         check_cflags -mvsx &&
4489         check_code cc altivec.h "int v[4] = { 0 };
4490                                  vector signed int v1 = vec_vsx_ld(0, v);" ||
4491             disable vsx
4492     fi
4493
4494     if enabled power8; then
4495         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4496     fi
4497
4498 elif enabled x86; then
4499
4500     check_builtin rdtsc    intrin.h   "__rdtsc()"
4501     check_builtin mm_empty mmintrin.h "_mm_empty()"
4502
4503     enable local_aligned_8 local_aligned_16 local_aligned_32
4504
4505     # check whether EBP is available on x86
4506     # As 'i' is stored on the stack, this program will crash
4507     # if the base pointer is used to access it because the
4508     # base pointer is cleared in the inline assembly code.
4509     check_exec_crash <<EOF && enable ebp_available
4510 volatile int i=0;
4511 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4512 return i;
4513 EOF
4514
4515     # check whether EBX is available on x86
4516     check_inline_asm ebx_available '""::"b"(0)' &&
4517         check_inline_asm ebx_available '"":::"%ebx"'
4518
4519     # check whether xmm clobbers are supported
4520     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4521
4522     # check whether binutils is new enough to compile SSSE3/MMXEXT
4523     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4524     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4525
4526     probe_x86asm(){
4527         x86asmexe_probe=$1
4528         if check_cmd $x86asmexe_probe -v; then
4529             x86asmexe=$x86asmexe_probe
4530             x86asm_type=nasm
4531             x86asm_debug="-g -F dwarf"
4532             X86ASMDEP=
4533             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4534         elif check_cmd $x86asmexe_probe --version; then
4535             x86asmexe=$x86asmexe_probe
4536             x86asm_type=yasm
4537             x86asm_debug="-g dwarf2"
4538             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4539             X86ASM_DEPFLAGS=
4540         fi
4541         check_x86asm "movbe ecx, [5]" && enable x86asm
4542     }
4543
4544     if ! disabled_any asm mmx x86asm; then
4545         disable x86asm
4546         for program in $x86asmexe nasm yasm; do
4547             probe_x86asm $program && break
4548         done
4549         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4550         X86ASMFLAGS="-f $objformat"
4551         enabled pic               && append X86ASMFLAGS "-DPIC"
4552         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4553         case "$objformat" in
4554             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4555         esac
4556
4557         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4558         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4559         check_x86asm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4560         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4561         check_x86asm "CPU amdnop"                      || disable cpunop
4562     fi
4563
4564     case "$cpu" in
4565         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4566             disable fast_clz
4567         ;;
4568     esac
4569
4570 fi
4571
4572 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4573
4574 check_ldflags -Wl,--as-needed
4575
4576 if ! disabled network; then
4577     check_func getaddrinfo $network_extralibs
4578     check_func inet_aton $network_extralibs
4579
4580     check_type netdb.h "struct addrinfo"
4581     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4582     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4583     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4584     check_type poll.h "struct pollfd"
4585     check_type netinet/sctp.h "struct sctp_event_subscribe"
4586     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4587     check_type netinet/in.h "struct sockaddr_in6"
4588     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4589     check_type "sys/types.h sys/socket.h" socklen_t
4590
4591     # Prefer arpa/inet.h over winsock2
4592     if check_header arpa/inet.h ; then
4593         check_func closesocket
4594     elif check_header winsock2.h ; then
4595         check_func_headers winsock2.h closesocket -lws2 &&
4596             network_extralibs="-lws2" ||
4597         { check_func_headers winsock2.h closesocket -lws2_32 &&
4598             network_extralibs="-lws2_32"; } || disable winsock2_h network
4599         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4600
4601         check_type ws2tcpip.h socklen_t
4602         check_type ws2tcpip.h "struct addrinfo"
4603         check_type ws2tcpip.h "struct group_source_req"
4604         check_type ws2tcpip.h "struct ip_mreq_source"
4605         check_type ws2tcpip.h "struct ipv6_mreq"
4606         check_type winsock2.h "struct pollfd"
4607         check_struct winsock2.h "struct sockaddr" sa_len
4608         check_type ws2tcpip.h "struct sockaddr_in6"
4609         check_type ws2tcpip.h "struct sockaddr_storage"
4610     else
4611         disable network
4612     fi
4613 fi
4614
4615 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4616 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4617 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4618 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4619
4620 case "$custom_allocator" in
4621     jemalloc)
4622         # jemalloc by default does not use a prefix
4623         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4624     ;;
4625     tcmalloc)
4626         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4627         malloc_prefix=tc_
4628     ;;
4629 esac
4630
4631 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4632 check_func  ${malloc_prefix}memalign            && enable memalign
4633 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4634
4635 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4636     { check_lib clock_gettime time.h clock_gettime ||
4637       check_lib clock_gettime time.h clock_gettime -lrt; }
4638
4639 check_func  fcntl
4640 check_func  fork
4641 check_func  gethrtime
4642 check_func  getopt
4643 check_func  getrusage
4644 check_func  gettimeofday
4645 check_func  gmtime_r
4646 check_func  isatty
4647 check_func  localtime_r
4648 check_func  mach_absolute_time
4649 check_func  mkstemp
4650 check_func  mmap
4651 check_func  mprotect
4652 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4653 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4654 check_func  sched_getaffinity
4655 check_func  setrlimit
4656 check_func  strerror_r
4657 check_func  sysconf
4658 check_func  sysctl
4659 check_func  usleep
4660
4661 check_func_headers io.h setmode
4662 check_func_headers stdlib.h getenv
4663
4664 check_func_headers windows.h GetProcessAffinityMask
4665 check_func_headers windows.h GetProcessTimes
4666 check_func_headers windows.h GetSystemTimeAsFileTime
4667 check_func_headers windows.h LoadLibrary
4668 check_func_headers windows.h MapViewOfFile
4669 check_func_headers windows.h SetConsoleTextAttribute
4670 check_func_headers windows.h Sleep
4671 check_func_headers windows.h VirtualAlloc
4672 check_struct windows.h "CONDITION_VARIABLE" Ptr
4673
4674 check_header d3d11.h
4675 check_header direct.h
4676 check_header dlfcn.h
4677 check_header dxgidebug.h
4678 check_header dxva.h
4679 check_header dxva2api.h
4680 check_header io.h
4681 check_header mach/mach_time.h
4682 check_header malloc.h
4683 check_header poll.h
4684 check_header sys/mman.h
4685 check_header sys/param.h
4686 check_header sys/resource.h
4687 check_header sys/select.h
4688 check_header sys/time.h
4689 check_header sys/un.h
4690 check_header unistd.h
4691 check_header valgrind/valgrind.h
4692 check_header VideoDecodeAcceleration/VDADecoder.h
4693 check_header windows.h
4694
4695 # it seems there are versions of clang in some distros that try to use the
4696 # gcc headers, which explodes for stdatomic
4697 # so we also check that atomics actually work here
4698 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4699
4700 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4701 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4702 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4703 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4704
4705 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4706
4707 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4708 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4709 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4710
4711 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4712 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4713 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4714
4715 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4716 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4717 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4718 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4719 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4720 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4721 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4722 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4723 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4724
4725 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4726
4727 if ! disabled w32threads && ! enabled pthreads; then
4728     check_lib w32threads "windows.h process.h" _beginthreadex
4729 fi
4730
4731 # check for some common methods of building with pthread support
4732 # do this before the optional library checks as some of them require pthreads
4733 if ! disabled pthreads && ! enabled w32threads; then
4734     if check_lib pthreads pthread.h pthread_join -pthread; then
4735         add_cflags -pthread
4736     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4737         add_cflags -pthreads
4738     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4739         :
4740     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4741         :
4742     elif check_func pthread_join; then
4743         enable pthreads
4744     fi
4745 fi
4746
4747 enabled pthreads &&
4748     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4749
4750 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4751 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4752
4753 # On some systems dynamic loading requires no extra linker flags
4754 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4755
4756 check_lib libm math.h sin -lm
4757
4758 atan2f_args=2
4759 ldexpf_args=2
4760 powf_args=2
4761
4762 for func in $MATH_FUNCS; do
4763     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4764 done
4765
4766 # these are off by default, so fail if requested and not available
4767 enabled avisynth          && require_header avisynth/avisynth_c.h
4768 enabled avxsynth          && require_header avxsynth/avxsynth_c.h
4769 enabled cuda              && require cuda cuda.h cuInit -lcuda
4770 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4771 enabled frei0r            && require_header frei0r.h
4772 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init
4773 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4774 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4775 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4776 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4777 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4778 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4779 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4780 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4781                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4782                                done || die "ERROR: libgsm not found"; }
4783 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4784 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4785 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4786 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4787 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4788 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4789 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4790 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4791 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4792 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4793 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4794                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4795 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4796 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4797 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4798 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4799 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4800 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init -lspeex
4801 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4802 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4803 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4804 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4805 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4806 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4807                              { enabled libvpx_vp8_decoder &&
4808                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4809                                enabled libvpx_vp8_encoder &&
4810                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4811                                enabled libvpx_vp9_decoder &&
4812                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4813                                enabled libvpx_vp9_encoder &&
4814                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4815                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4816                                    die "libvpx enabled but no supported decoders/encoders found"
4817                              }
4818 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4819 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4820 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4821                              require_cpp_condition x264.h "X264_BUILD >= 118" &&
4822                              { check_cpp_condition x264.h "X264_MPEG2" &&
4823                                enable libx262; }
4824 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4825                              require_cpp_condition x265.h "X265_BUILD >= 57"
4826 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4827 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4828 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4829                                { ! enabled cross_compile &&
4830                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4831                                  add_ldflags -L/opt/vc/lib/ &&
4832                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4833                                die "ERROR: mmal not found" &&
4834                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4835 enabled omx               && require_header OMX_Core.h
4836 enabled omx_rpi           && { check_header OMX_Core.h ||
4837                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4838                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4839 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4840                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4841                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4842                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4843                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4844                                die "ERROR: openssl not found"; }
4845
4846 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4847
4848 if enabled nvenc; then
4849     require_header nvEncodeAPI.h
4850     require_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4851 fi
4852
4853 # SDL is "special" and adds some CFLAGS that should not pollute anything else.
4854 if enabled avplay; then
4855     CFLAGS_SAVE=$CFLAGS
4856     check_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent &&
4857     sdl_cflags=$pkg_cflags
4858     CFLAGS=$CFLAGS_SAVE
4859 fi
4860
4861 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4862 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4863
4864 check_header linux/fb.h
4865 check_header linux/videodev2.h
4866 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4867
4868 check_header AVFoundation/AVFoundation.h
4869
4870 check_header sys/videoio.h
4871
4872 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4873 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4874 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4875 # w32api 3.12 had it defined wrong
4876 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4877
4878 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4879 { check_header dev/bktr/ioctl_meteor.h &&
4880   check_header dev/bktr/ioctl_bt848.h; } ||
4881 { check_header machine/ioctl_meteor.h &&
4882   check_header machine/ioctl_bt848.h; } ||
4883 { check_header dev/video/meteor/ioctl_meteor.h &&
4884   check_header dev/video/bktr/ioctl_bt848.h; } ||
4885 check_header dev/ic/bt8xx.h
4886
4887 check_header sys/soundcard.h
4888 check_header soundcard.h
4889
4890 enabled_any alsa_indev alsa_outdev &&
4891     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4892
4893 enabled libjack &&
4894     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4895
4896 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4897
4898 if enabled libcdio; then
4899     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4900     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4901     die "ERROR: No usable libcdio/cdparanoia found"
4902 fi
4903
4904 if enabled libxcb; then
4905     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4906     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4907     disabled libxcb_shm ||
4908         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4909     disabled libxcb_xfixes ||
4910         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4911 fi
4912
4913 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4914 # the desktop api partition
4915 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4916 #ifdef WINAPI_FAMILY
4917 #include <winapifamily.h>
4918 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4919 #error desktop, not uwp
4920 #else
4921 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4922 #endif
4923 #else
4924 #error no family set
4925 #endif
4926 EOF
4927
4928 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4929
4930 enabled vaapi &&
4931     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4932     disable vaapi
4933
4934 enabled vaapi &&
4935     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4936
4937 enabled vaapi &&
4938     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4939
4940 enabled vdpau &&
4941     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4942     disable vdpau
4943
4944 enabled vdpau &&
4945     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4946
4947 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4948
4949 # add some useful compiler flags if supported
4950 check_cflags -Wdeclaration-after-statement
4951 check_cflags -Wall
4952 check_cflags -Wdisabled-optimization
4953 check_cflags -Wpointer-arith
4954 check_cflags -Wredundant-decls
4955 check_cflags -Wwrite-strings
4956 check_cflags -Wtype-limits
4957 check_cflags -Wundef
4958 check_cflags -Wmissing-prototypes
4959 check_cflags -Wstrict-prototypes
4960
4961 if enabled extra_warnings; then
4962     check_cflags -Wcast-qual
4963     check_cflags -Wextra
4964     check_cflags -Wpedantic
4965 fi
4966
4967 check_disable_warning(){
4968     warning_flag=-W${1#-Wno-}
4969     test_cflags $warning_flag && add_cflags $1
4970 }
4971
4972 check_disable_warning -Wno-parentheses
4973 check_disable_warning -Wno-switch
4974 check_disable_warning -Wno-format-zero-length
4975 check_disable_warning -Wno-pointer-sign
4976
4977 check_disable_warning_headers(){
4978     warning_flag=-W${1#-Wno-}
4979     test_cflags $warning_flag && add_cflags_headers $1
4980 }
4981
4982 check_disable_warning_headers -Wno-deprecated-declarations
4983 check_disable_warning_headers -Wno-unused-variable
4984
4985 check_objcflags -fobjc-arc && enable objc_arc
4986
4987 check_cc <<EOF && enable blocks_extension
4988 void (^block)(void);
4989 EOF
4990
4991 # add some linker flags
4992 check_ldflags -Wl,--warn-common
4993 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4994 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
4995 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4996
4997 # add some strip flags
4998 # -wN '..@*' is more selective than -x, but not available everywhere.
4999 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
5000
5001 enabled neon_clobber_test &&
5002     check_ldflags -Wl,--wrap,avcodec_open2              \
5003                   -Wl,--wrap,avcodec_decode_audio4      \
5004                   -Wl,--wrap,avcodec_decode_video2      \
5005                   -Wl,--wrap,avcodec_decode_subtitle2   \
5006                   -Wl,--wrap,avcodec_encode_audio2      \
5007                   -Wl,--wrap,avcodec_encode_video2      \
5008                   -Wl,--wrap,avcodec_encode_subtitle    \
5009                   -Wl,--wrap,avcodec_send_packet        \
5010                   -Wl,--wrap,avcodec_receive_packet     \
5011                   -Wl,--wrap,avcodec_send_frame         \
5012                   -Wl,--wrap,avcodec_receive_frame      \
5013                   -Wl,--wrap,avresample_convert ||
5014     disable neon_clobber_test
5015
5016 enabled xmm_clobber_test &&
5017     check_ldflags -Wl,--wrap,avcodec_open2              \
5018                   -Wl,--wrap,avcodec_decode_audio4      \
5019                   -Wl,--wrap,avcodec_decode_video2      \
5020                   -Wl,--wrap,avcodec_decode_subtitle2   \
5021                   -Wl,--wrap,avcodec_encode_audio2      \
5022                   -Wl,--wrap,avcodec_encode_video2      \
5023                   -Wl,--wrap,avcodec_encode_subtitle    \
5024                   -Wl,--wrap,avcodec_send_packet        \
5025                   -Wl,--wrap,avcodec_receive_packet     \
5026                   -Wl,--wrap,avcodec_send_frame         \
5027                   -Wl,--wrap,avcodec_receive_frame      \
5028                   -Wl,--wrap,avresample_convert         \
5029                   -Wl,--wrap,sws_scale ||
5030     disable xmm_clobber_test
5031
5032 check_ld <<EOF && enable proper_dce
5033 extern const int array[512];
5034 static inline int func(void) { return array[0]; }
5035 int main(void) { return 0; }
5036 EOF
5037
5038 if enabled proper_dce; then
5039     echo "X { local: *; };" > $TMPV
5040     if test_ldflags -Wl,${version_script},$TMPV; then
5041         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
5042         check_cc <<EOF && enable symver_asm_label
5043 void ff_foo(void) __asm__ ("av_foo@VERSION");
5044 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
5045 EOF
5046         check_cc <<EOF && enable symver_gnu_asm
5047 __asm__(".symver ff_foo,av_foo@VERSION");
5048 void ff_foo(void) {}
5049 EOF
5050     fi
5051 fi
5052
5053 if [ -z "$optflags" ]; then
5054     if enabled small; then
5055         optflags=$cflags_size
5056     elif enabled optimizations; then
5057         optflags=$cflags_speed
5058     else
5059         optflags=$cflags_noopt
5060     fi
5061 fi
5062
5063 check_optflags(){
5064     check_cflags "$@"
5065     enabled lto && check_ldflags "$@"
5066 }
5067
5068 check_optflags $optflags
5069 check_optflags -fno-math-errno
5070 check_optflags -fno-signed-zeros
5071
5072 if enabled lto; then
5073     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
5074     check_cflags  -flto
5075     check_ldflags -flto $cpuflags
5076 fi
5077
5078 if enabled icc; then
5079     # Just warnings, no remarks
5080     check_cflags -w1
5081     # -wd: Disable following warnings
5082     # 144, 167, 556: -Wno-pointer-sign
5083     # 1292: attribute "foo" ignored
5084     # 1419: external declaration in primary source file
5085     # 10006: ignoring unknown option -fno-signed-zeros
5086     # 10148: ignoring unknown option -Wno-parentheses
5087     # 10156: ignoring option '-W'; no argument required
5088     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
5089     # 11030: Warning unknown option --as-needed
5090     # 10156: ignoring option '-export'; no argument required
5091     check_ldflags -wd10156,11030
5092     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
5093     enable ebp_available
5094     if enabled x86_32; then
5095         icc_version=$($cc -dumpversion)
5096         test ${icc_version%%.*} -ge 11 &&
5097             check_cflags -falign-stack=maintain-16-byte ||
5098             disable aligned_stack
5099     fi
5100 elif enabled ccc; then
5101     # disable some annoying warnings
5102     add_cflags -msg_disable bitnotint
5103     add_cflags -msg_disable mixfuncvoid
5104     add_cflags -msg_disable nonstandcast
5105     add_cflags -msg_disable unsupieee
5106 elif enabled gcc; then
5107     check_optflags -fno-tree-vectorize
5108     check_cflags -Werror=implicit-function-declaration
5109     check_cflags -Werror=missing-prototypes
5110     check_cflags -Werror=return-type
5111     check_cflags -Werror=declaration-after-statement
5112     check_cflags -Werror=vla
5113     check_cflags -Werror=format-security
5114     check_cflags -fdiagnostics-color=auto
5115     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
5116 elif enabled llvm_gcc; then
5117     check_cflags -mllvm -stack-alignment=16
5118 elif enabled clang; then
5119     check_cflags -mllvm -stack-alignment=16
5120     check_cflags -Qunused-arguments
5121     check_cflags -Werror=implicit-function-declaration
5122     check_cflags -Werror=missing-prototypes
5123     check_cflags -Werror=return-type
5124 elif enabled cparser; then
5125     add_cflags -Wno-missing-variable-declarations
5126     add_cflags -Wno-empty-statement
5127 elif enabled armcc; then
5128     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5129     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5130     # 2523: use of inline assembly is deprecated
5131     add_cflags -W${armcc_opt},--diag_suppress=2523
5132     add_cflags -W${armcc_opt},--diag_suppress=1207
5133     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5134     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5135     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5136     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5137 elif enabled tms470; then
5138     add_cflags -pds=824 -pds=837
5139     disable inline_asm
5140 elif enabled pathscale; then
5141     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5142     disable inline_asm
5143 elif enabled_any msvc icl; then
5144     enabled x86_32 && disable aligned_stack
5145     enabled_all x86_32 debug && add_cflags -Oy-
5146     enabled debug && add_ldflags -debug
5147     enable pragma_deprecated
5148     if enabled icl; then
5149         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5150         # (correctly) on icl 13.x.
5151         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5152             add_cflags -Qansi-alias
5153         # icl will pass the inline asm tests but inline asm is currently
5154         # not supported (build will fail)
5155         disable inline_asm
5156     fi
5157     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5158     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
5159     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5160     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5161     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5162     # MSVC 2013 and newer can handle it fine.
5163     # If this declspec fails, force including stdlib.h before the restrict redefinition
5164     # happens in config.h.
5165     if [ $_restrict != restrict ]; then
5166         check_cc <<EOF || add_cflags -FIstdlib.h
5167 __declspec($_restrict) void* foo(int);
5168 EOF
5169     fi
5170 fi
5171
5172 for pfx in "" host_; do
5173     varname=${pfx%_}cc_type
5174     eval "type=\$$varname"
5175     if [ "$type" = "msvc" ]; then
5176         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5177 static inline int foo(int a) { return a; }
5178 EOF
5179     fi
5180 done
5181
5182 case $as_type in
5183     clang)
5184         add_asflags -Qunused-arguments
5185     ;;
5186 esac
5187
5188 case $ld_type in
5189     clang)
5190         check_ldflags -Qunused-arguments
5191     ;;
5192 esac
5193
5194 case $target_os in
5195     osf1)
5196         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
5197     ;;
5198 esac
5199
5200 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5201
5202 check_deps $CONFIG_LIST       \
5203            $CONFIG_EXTRA      \
5204            $HAVE_LIST         \
5205            $ALL_COMPONENTS    \
5206
5207 flatten_extralibs(){
5208     unset nested_entries
5209     list_name=$1
5210     eval list=\$${1}
5211     for entry in $list; do
5212         entry_copy=$entry
5213         resolve entry_copy
5214         append nested_entries $(filter '*_extralibs' $entry_copy)
5215         flat_entries=$(filter_out '*_extralibs' $entry_copy)
5216         eval $entry="\$flat_entries"
5217     done
5218     append $list_name "$nested_entries"
5219
5220     resolve nested_entries
5221     if test -n "$(filter '*_extralibs' $nested_entries)"; then
5222         flatten_extralibs $list_name
5223     fi
5224 }
5225
5226 for linkunit in $LIBRARY_LIST; do
5227     unset current_extralibs
5228     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
5229     for comp in ${components}; do
5230         enabled $comp || continue
5231         comp_extralibs="${comp}_extralibs"
5232         append current_extralibs $comp_extralibs
5233     done
5234     eval prepend ${linkunit}_extralibs $current_extralibs
5235 done
5236
5237 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5238     flatten_extralibs ${linkunit}_extralibs
5239     unique  ${linkunit}_extralibs
5240     resolve ${linkunit}_extralibs
5241     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
5242 done
5243
5244 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5245
5246 for thread in $THREADS_LIST; do
5247     if enabled $thread; then
5248         test -n "$thread_type" &&
5249             die "ERROR: Only one thread type must be selected." ||
5250             thread_type="$thread"
5251     fi
5252 done
5253
5254 if disabled stdatomic_h; then
5255     if enabled atomics_gcc; then
5256         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
5257     elif enabled atomics_win32; then
5258         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
5259     elif enabled atomics_suncc; then
5260         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
5261     elif enabled pthreads; then
5262         add_compat atomics/pthread/stdatomic.o
5263         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
5264     else
5265         enabled threads && die "Threading is enabled, but no atomics are available"
5266         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
5267     fi
5268 fi
5269
5270 enabled zlib && add_cppflags -DZLIB_CONST
5271
5272 # conditional library dependencies, in linking order
5273 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5274 enabled_any asyncts_filter resample_filter &&
5275                            prepend avfilter_deps "avresample"
5276 enabled scale_filter    && prepend avfilter_deps "swscale"
5277
5278 enabled opus_decoder    && prepend avcodec_deps "avresample"
5279
5280 expand_deps(){
5281     lib_deps=${1}_deps
5282     eval "deps=\$$lib_deps"
5283     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5284     unique $lib_deps
5285 }
5286
5287 map 'expand_deps $v' $LIBRARY_LIST
5288
5289 if test "$quiet" != "yes"; then
5290
5291 echo "install prefix            $prefix"
5292 echo "source path               $source_path"
5293 echo "C compiler                $cc"
5294 echo "C library                 $libc_type"
5295 if test "$host_cc" != "$cc"; then
5296     echo "host C compiler           $host_cc"
5297     echo "host C library            $host_libc_type"
5298 fi
5299 echo "ARCH                      $arch ($cpu)"
5300 if test "$extra_version" != ""; then
5301     echo "version string suffix     $extra_version"
5302 fi
5303 echo "big-endian                ${bigendian-no}"
5304 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5305 if enabled x86; then
5306     echo "standalone assembly       ${x86asm-no}"
5307     echo "x86 assembler             ${x86asmexe}"
5308     echo "MMX enabled               ${mmx-no}"
5309     echo "MMXEXT enabled            ${mmxext-no}"
5310     echo "3DNow! enabled            ${amd3dnow-no}"
5311     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5312     echo "SSE enabled               ${sse-no}"
5313     echo "SSSE3 enabled             ${ssse3-no}"
5314     echo "AVX enabled               ${avx-no}"
5315     echo "XOP enabled               ${xop-no}"
5316     echo "FMA3 enabled              ${fma3-no}"
5317     echo "FMA4 enabled              ${fma4-no}"
5318     echo "i686 features enabled     ${i686-no}"
5319     echo "CMOV is fast              ${fast_cmov-no}"
5320     echo "EBX available             ${ebx_available-no}"
5321     echo "EBP available             ${ebp_available-no}"
5322 fi
5323 if enabled aarch64; then
5324     echo "NEON enabled              ${neon-no}"
5325     echo "VFP enabled               ${vfp-no}"
5326 fi
5327 if enabled arm; then
5328     echo "ARMv5TE enabled           ${armv5te-no}"
5329     echo "ARMv6 enabled             ${armv6-no}"
5330     echo "ARMv6T2 enabled           ${armv6t2-no}"
5331     echo "VFP enabled               ${vfp-no}"
5332     echo "NEON enabled              ${neon-no}"
5333 fi
5334 if enabled ppc; then
5335     echo "AltiVec enabled           ${altivec-no}"
5336     echo "VSX enabled               ${vsx-no}"
5337     echo "POWER8 enabled            ${power8-no}"
5338     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5339     echo "dcbzl available           ${dcbzl-no}"
5340 fi
5341 echo "debug symbols             ${debug-no}"
5342 echo "optimize for size         ${small-no}"
5343 echo "optimizations             ${optimizations-no}"
5344 echo "static                    ${static-no}"
5345 echo "shared                    ${shared-no}"
5346 echo "network support           ${network-no}"
5347 echo "threading support         ${thread_type-no}"
5348 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5349 test -n "$random_seed" &&
5350     echo "random seed               ${random_seed}"
5351 echo
5352
5353 echo "External libraries:"
5354 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5355 echo
5356 echo "External libraries providing hardware acceleration:"
5357 print_enabled '' $HWACCEL_LIBRARY_LIST | print_3_columns
5358 echo
5359
5360 echo "Libraries:"
5361 print_enabled '' $LIBRARY_LIST | print_3_columns
5362 echo
5363
5364 echo "Programs:"
5365 print_enabled '' $PROGRAM_LIST | print_3_columns
5366 echo
5367
5368 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
5369     echo "Enabled ${type}s:"
5370     eval list=\$$(toupper $type)_LIST
5371     print_enabled '_*' $list | print_3_columns
5372     echo
5373 done
5374
5375 if test -n "$ignore_tests"; then
5376     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
5377     echo "Ignored FATE tests:"
5378     echo $ignore_tests | print_3_columns
5379     echo
5380 fi
5381
5382 license="LGPL version 2.1 or later"
5383 if enabled nonfree; then
5384     license="nonfree and unredistributable"
5385 elif enabled gplv3; then
5386     license="GPL version 3 or later"
5387 elif enabled lgplv3; then
5388     license="LGPL version 3 or later"
5389 elif enabled gpl; then
5390     license="GPL version 2 or later"
5391 fi
5392
5393 echo "License: $license"
5394
5395 echo "Creating configuration files ..."
5396
5397 fi # test "$quiet" != "yes"
5398
5399 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5400
5401 config_files="$TMPH avbuild/config.mak"
5402
5403 cat > avbuild/config.mak <<EOF
5404 # Automatically generated by configure - do not modify!
5405 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
5406 prefix=$prefix
5407 LIBDIR=\$(DESTDIR)$libdir
5408 SHLIBDIR=\$(DESTDIR)$shlibdir
5409 INCDIR=\$(DESTDIR)$incdir
5410 BINDIR=\$(DESTDIR)$bindir
5411 DATADIR=\$(DESTDIR)$datadir
5412 DOCDIR=\$(DESTDIR)$docdir
5413 MANDIR=\$(DESTDIR)$mandir
5414 SRC_PATH=$source_path
5415 CC_IDENT=$cc_ident
5416 ARCH=$arch
5417 INTRINSICS=$intrinsics
5418 CC=$cc
5419 AS=$as
5420 OBJCC=$objcc
5421 LD=$ld
5422 DEPCC=$dep_cc
5423 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5424 DEPAS=$as
5425 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5426 X86ASM=$x86asmexe
5427 DEPX86ASM=$x86asmexe
5428 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
5429 AR=$ar
5430 ARFLAGS=$arflags
5431 AR_O=$ar_o
5432 RANLIB=$ranlib
5433 STRIP=$strip
5434 LN_S=$ln_s
5435 CPPFLAGS=$CPPFLAGS
5436 CFLAGS=$CFLAGS
5437 OBJCFLAGS=$OBJCFLAGS
5438 ASFLAGS=$ASFLAGS
5439 AS_C=$AS_C
5440 AS_O=$AS_O
5441 OBJCC_C=$OBJCC_C
5442 OBJCC_E=$OBJCC_E
5443 OBJCC_O=$OBJCC_O
5444 CC_C=$CC_C
5445 CC_E=$CC_E
5446 CC_O=$CC_O
5447 X86ASM_O=$X86ASM_O
5448 LD_O=$LD_O
5449 LD_LIB=$LD_LIB
5450 LD_PATH=$LD_PATH
5451 DLLTOOL=$dlltool
5452 LDFLAGS=$LDFLAGS
5453 LDEXEFLAGS=$LDEXEFLAGS
5454 LDSOFLAGS=$LDSOFLAGS
5455 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5456 STRIPFLAGS=$STRIPFLAGS
5457 X86ASMFLAGS=$X86ASMFLAGS
5458 LIBPREF=$LIBPREF
5459 LIBSUF=$LIBSUF
5460 LIBNAME=$LIBNAME
5461 SLIBPREF=$SLIBPREF
5462 SLIBSUF=$SLIBSUF
5463 EXESUF=$EXESUF
5464 EXTRA_VERSION=$extra_version
5465 CCDEP=$CCDEP
5466 CCDEP_FLAGS=$CCDEP_FLAGS
5467 ASDEP=$ASDEP
5468 ASDEP_FLAGS=$ASDEP_FLAGS
5469 X86ASMDEP=$X86ASMDEP
5470 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
5471 CC_DEPFLAGS=$CC_DEPFLAGS
5472 AS_DEPFLAGS=$AS_DEPFLAGS
5473 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
5474 HOSTCC=$host_cc
5475 HOSTLD=$host_ld
5476 HOSTCFLAGS=$host_cflags
5477 HOSTCPPFLAGS=$host_cppflags
5478 HOSTEXESUF=$HOSTEXESUF
5479 HOSTLDFLAGS=$host_ldflags
5480 HOSTEXTRALIBS=$host_extralibs
5481 DEPHOSTCC=$host_cc
5482 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5483 HOSTCCDEP=$HOSTCCDEP
5484 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5485 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5486 HOSTCC_C=$HOSTCC_C
5487 HOSTCC_O=$HOSTCC_O
5488 HOSTLD_O=$HOSTLD_O
5489 TARGET_EXEC=$target_exec $target_exec_args
5490 TARGET_PATH=$target_path
5491 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5492 CFLAGS-avplay=$sdl_cflags
5493 CFLAGS_HEADERS=$CFLAGS_HEADERS
5494 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5495 EXTRALIBS=$extralibs
5496 COMPAT_OBJS=$compat_objs
5497 INSTALL=install
5498 LIBTARGET=${LIBTARGET}
5499 SLIBNAME=${SLIBNAME}
5500 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5501 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5502 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5503 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5504 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5505 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5506 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5507 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5508 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
5509 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
5510 IGNORE_TESTS=$ignore_tests
5511 EOF
5512
5513 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> avbuild/config.mak' $LIBRARY_LIST
5514
5515 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5516     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> avbuild/config.mak
5517 done
5518
5519 cat > $TMPH <<EOF
5520 /* Automatically generated by configure - do not modify! */
5521 #ifndef LIBAV_CONFIG_H
5522 #define LIBAV_CONFIG_H
5523 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
5524 #define LIBAV_LICENSE "$(c_escape $license)"
5525 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5526 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5527 #define restrict $_restrict
5528 #define EXTERN_PREFIX "${extern_prefix}"
5529 #define EXTERN_ASM ${extern_prefix}
5530 #define SLIBSUF "$SLIBSUF"
5531 EOF
5532
5533 test -n "$malloc_prefix" &&
5534     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5535
5536 if enabled x86asm; then
5537     append config_files $TMPASM
5538     printf '' >$TMPASM
5539 fi
5540
5541 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5542
5543 print_config ARCH_   "$config_files" $ARCH_LIST
5544 print_config HAVE_   "$config_files" $HAVE_LIST
5545 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5546                                      $CONFIG_EXTRA      \
5547                                      $ALL_COMPONENTS    \
5548
5549 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
5550
5551 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5552 cp_if_changed $TMPH config.h
5553 touch avbuild/.config
5554
5555 enabled x86asm && cp_if_changed $TMPASM config.asm
5556
5557 cat > $TMPH <<EOF
5558 /* Generated by ffconf */
5559 #ifndef AVUTIL_AVCONFIG_H
5560 #define AVUTIL_AVCONFIG_H
5561 EOF
5562
5563 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5564
5565 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5566
5567 cp_if_changed $TMPH libavutil/avconfig.h
5568
5569 # generate the lists of enabled components
5570 print_enabled_components(){
5571     file=$1
5572     struct_name=$2
5573     name=$3
5574     shift 3
5575     echo "static const $struct_name * const $name[] = {" > $TMPH
5576     for c in $*; do
5577         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
5578     done
5579     echo "    NULL };" >> $TMPH
5580     cp_if_changed $TMPH $file
5581 }
5582
5583 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
5584 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
5585
5586 test -n "$WARNINGS" && printf "\n$WARNINGS"
5587
5588 # Settings for pkg-config files
5589
5590 cat > avbuild/config.sh <<EOF
5591 # Automatically generated by configure - do not modify!
5592 shared=$shared
5593 prefix=$prefix
5594 libdir=$libdir
5595 incdir=$incdir
5596 source_path=${source_path}
5597 LIBPREF=${LIBPREF}
5598 LIBSUF=${LIBSUF}
5599 extralibs_avutil="$avutil_extralibs"
5600 extralibs_avcodec="$avcodec_extralibs"
5601 extralibs_avformat="$avformat_extralibs"
5602 extralibs_avdevice="$avdevice_extralibs"
5603 extralibs_avfilter="$avfilter_extralibs"
5604 extralibs_avresample="$avresample_extralibs"
5605 extralibs_swscale="$swscale_extralibs"
5606 EOF
5607
5608 for lib in $LIBRARY_LIST; do
5609     lib_deps="$(eval echo \$${lib}_deps)"
5610     echo ${lib}_deps=\"$lib_deps\" >> avbuild/config.sh
5611 done