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

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