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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
  80   --disable-logging        do not log configure debug information
  81   --prefix=PREFIX          install in PREFIX [$prefix_default]
  82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
  84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
  85   --libdir=DIR             install libs in DIR [PREFIX/lib]
  86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  87   --incdir=DIR             install includes in DIR [PREFIX/include]
  88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  89   --enable-rpath           use rpath when linking programs (USE WITH CARE)
  90
  91 Licensing options:
  92   --enable-gpl             allow use of GPL code, the resulting libs
  93                            and binaries will be under GPL [no]
  94   --enable-version3        upgrade (L)GPL to version 3 [no]
  95   --enable-nonfree         allow use of nonfree code, the resulting libs
  96                            and binaries will be unredistributable [no]
  97
  98 Configuration options:
  99   --disable-static         do not build static libraries [no]
 100   --enable-shared          build shared libraries [no]
 101   --enable-small           optimize for size instead of speed
 102   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
 103   --enable-gray            enable full grayscale support (slower color)
 104   --disable-swscale-alpha  disable alpha channel support in swscale
 105   --disable-all            disable building components, libraries and programs
 106
 107 Program options:
 108   --disable-programs       do not build command line programs
 109   --disable-avconv         disable avconv build
 110   --disable-avplay         disable avplay build
 111   --disable-avprobe        disable avprobe build
 112
 113 Component options:
 114   --disable-doc            do not build documentation
 115   --disable-pod2man        do not build manual pages
 116   --disable-texi2html      do not build HTML documentation
 117   --disable-avdevice       disable libavdevice build
 118   --disable-avcodec        disable libavcodec build
 119   --disable-avformat       disable libavformat build
 120   --disable-avutil         disable libavutil build
 121   --disable-swscale        disable libswscale build
 122   --disable-avfilter       disable video filter support [no]
 123   --disable-avresample     disable libavresample build [no]
 124   --disable-pthreads       disable pthreads [auto]
 125   --disable-w32threads     disable Win32 threads [auto]
 126   --disable-network        disable network support [no]
 127   --disable-dct            disable DCT code
 128   --disable-error-resilience disable error resilience code
 129   --disable-lsp            disable LSP code
 130   --disable-lzo            disable LZO decoder code
 131   --disable-mdct           disable MDCT code
 132   --disable-rdft           disable RDFT code
 133   --disable-fft            disable FFT code
 134   --disable-faan           disable floating point AAN (I)DCT code
 135
 136 Individual component options:
 137   --disable-everything     disable all components listed below
 138   --disable-encoder=NAME   disable encoder NAME
 139   --enable-encoder=NAME    enable encoder NAME
 140   --disable-encoders       disable all encoders
 141   --disable-decoder=NAME   disable decoder NAME
 142   --enable-decoder=NAME    enable decoder NAME
 143   --disable-decoders       disable all decoders
 144   --disable-hwaccel=NAME   disable hwaccel NAME
 145   --enable-hwaccel=NAME    enable hwaccel NAME
 146   --disable-hwaccels       disable all hwaccels
 147   --disable-muxer=NAME     disable muxer NAME
 148   --enable-muxer=NAME      enable muxer NAME
 149   --disable-muxers         disable all muxers
 150   --disable-demuxer=NAME   disable demuxer NAME
 151   --enable-demuxer=NAME    enable demuxer NAME
 152   --disable-demuxers       disable all demuxers
 153   --enable-parser=NAME     enable parser NAME
 154   --disable-parser=NAME    disable parser NAME
 155   --disable-parsers        disable all parsers
 156   --enable-bsf=NAME        enable bitstream filter NAME
 157   --disable-bsf=NAME       disable bitstream filter NAME
 158   --disable-bsfs           disable all bitstream filters
 159   --enable-protocol=NAME   enable protocol NAME
 160   --disable-protocol=NAME  disable protocol NAME
 161   --disable-protocols      disable all protocols
 162   --enable-indev=NAME      enable input device NAME
 163   --disable-indev=NAME     disable input device NAME
 164   --disable-indevs         disable input devices
 165   --disable-devices        disable all devices
 166   --enable-filter=NAME     enable filter NAME
 167   --disable-filter=NAME    disable filter NAME
 168   --disable-filters        disable all filters
 169
 170 External library support:
 171
 172   Using any of the following switches will allow Libav to link to the
 173   corresponding external library. All the components depending on that library
 174   will become enabled, if all their other dependencies are met and they are not
 175   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 176   libwavpack and allow the libwavpack encoder to be built, unless it is
 177   specifically disabled with --disable-encoder=libwavpack.
 178
 179   Note that only the system libraries are auto-detected. All the other external
 180   libraries must be explicitly enabled.
 181
 182   Also note that the following help text describes the purpose of the libraries
 183   themselves, not all their features will necessarily be usable by Libav.
 184
 185   --enable-avisynth          video frameserver
 186   --enable-avxsynth          Linux version of AviSynth
 187   --enable-bzlib             bzip2 compression [autodetect]
 188   --enable-frei0r            video filtering plugins
 189   --enable-gnutls            crypto
 190   --enable-libaom            AV1 video encoding/decoding
 191   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
 192   --enable-libcdio           audio CD input
 193   --enable-libdav1d          AV1 video decoding
 194   --enable-libdc1394         IEEE 1394/Firewire camera input
 195   --enable-libdcadec         DCA audio decoding
 196   --enable-libfaac           AAC audio encoding
 197   --enable-libfdk-aac        AAC audio encoding/decoding
 198   --enable-libfontconfig     font configuration and management
 199   --enable-libfreetype       font rendering
 200   --enable-libgsm            GSM audio encoding/decoding
 201   --enable-libhdcd           HDCD decoding filter
 202   --enable-libilbc           ILBC audio encoding/decoding
 203   --enable-libjack           JACK audio sound server
 204   --enable-libkvazaar        HEVC video encoding
 205   --enable-libmp3lame        MP3 audio encoding
 206   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
 207   --enable-libopencore-amrwb AMR-WB audio decoding
 208   --enable-libopencv         computer vision
 209   --enable-libopenh264       H.264 video encoding/decoding
 210   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
 211   --enable-libopus           Opus audio encoding/decoding
 212   --enable-libpulse          Pulseaudio sound server
 213   --enable-librtmp           RTMP streaming
 214   --enable-libschroedinger   Dirac video encoding/decoding
 215   --enable-libsnappy         snappy compression
 216   --enable-libspeex          Speex audio encoding/decoding
 217   --enable-libsrt            Haivision SRT protocol
 218   --enable-libtheora         Theora video encoding/decoding
 219   --enable-libtwolame        MP2 audio encoding
 220   --enable-libvo-aacenc      AAC audio encoding
 221   --enable-libvo-amrwbenc    AMR-WB audio encoding
 222   --enable-libvorbis         Vorbis audio encoding/decoding
 223   --enable-libvpx            VP* video encoding/decoding
 224   --enable-libwavpack        Wavpack audio encoding/decoding
 225   --enable-libwebp           WebP image encoding/decoding
 226   --enable-libx264           H.264 video encoding
 227   --enable-libx265           HEVC video encoding
 228   --enable-libxavs           Chinese AVS video encoding
 229   --enable-libxcb            X window system protocol communication
 230   --enable-libxcb-shm        X11 shm communication [auto]
 231   --enable-libxcb-xfixes     X11 mouse rendering [auto]
 232   --enable-libxvid           MPEG-4 ASP video encoding
 233   --enable-mbedtls           crypto
 234   --enable-openssl           crypto
 235   --enable-zlib              compression [autodetect]
 236
 237   The following libraries provide various hardware acceleration features:
 238   --enable-amf     AMF video encoding code [auto]
 239   --enable-cuda    Nvidia CUDA (dynamically linked)
 240   --enable-cuvid   Nvidia CUVID video decode acceleration
 241   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
 242   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
 243   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
 244   --enable-libnpp  Nvidia CUDA processing
 245   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
 246   --enable-nvenc   Nvidia video encoding
 247   --enable-omx     OpenMAX IL
 248   --enable-omx-rpi OpenMAX IL for Raspberry Pi
 249   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
 250   --enable-vda     Apple Video Decode Acceleration [auto]
 251   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
 252
 253 Toolchain options:
 254   --arch=ARCH              select architecture [$arch]
 255   --cpu=CPU                select the minimum required CPU (affects
 256                            instruction selection, may crash on older CPUs)
 257   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 258   --enable-cross-compile   assume a cross-compiler is used
 259   --sysroot=PATH           root of cross-build tree
 260   --sysinclude=PATH        location of cross-build system headers
 261   --target-os=OS           compiler targets OS [$target_os]
 262   --target-exec=CMD        command to run executables on target
 263   --target-path=DIR        path to view of build directory on target
 264   --target-samples=DIR     path to samples directory on target
 265   --toolchain=NAME         set tool defaults according to NAME
 266                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
 267                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
 268                            valgrind-massif, valgrind-memcheck,
 269                            msvc, icl, gcov, llvm-cov, hardened)
 270   --nm=NM                  use nm tool
 271   --ar=AR                  use archive tool AR [$ar_default]
 272   --as=AS                  use assembler AS [$as_default]
 273   --cc=CC                  use C compiler CC [$cc_default]
 274   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 275   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 276   --ld=LD                  use linker LD
 277   --x86asmexe=X86ASM       use x86 assembler X86ASM
 278   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 279   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 280   --host-cc=HOSTCC         use host C compiler HOSTCC
 281   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 282   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 283   --host-ld=HOSTLD         use host linker HOSTLD
 284   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 285   --host-libs=HLIBS        use libs HLIBS when linking for host
 286   --host-os=OS             compiler host OS [$target_os]
 287   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 288   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 289   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 290   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 291   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
 292   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 293   --extra-version=STRING   version string suffix []
 294   --optflags=OPTFLAGS      override optimization-related compiler flags
 295   --enable-pic             build position-independent code
 296   --enable-thumb           compile for Thumb instruction set
 297   --enable-lto             use link-time optimization
 298   --env="ENV=override"     override the environment variables
 299
 300 Advanced options (experts only):
 301   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 302   --custom-allocator=NAME  use a supported custom allocator
 303   --disable-symver         disable symbol versioning
 304   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 305   --disable-safe-bitstream-reader
 306                            disable buffer boundary checking in bitreaders
 307                            (faster, but may crash)
 308   --enable-sram            allow use of on-chip SRAM
 309
 310 Optimization options (experts only):
 311   --disable-asm            disable all assembly optimizations
 312   --disable-altivec        disable AltiVec optimizations
 313   --disable-vsx            disable VSX optimizations
 314   --disable-power8         disable POWER8 optimizations
 315   --disable-amd3dnow       disable 3DNow! optimizations
 316   --disable-amd3dnowext    disable 3DNow! extended optimizations
 317   --disable-mmx            disable MMX optimizations
 318   --disable-mmxext         disable MMXEXT optimizations
 319   --disable-sse            disable SSE optimizations
 320   --disable-sse2           disable SSE2 optimizations
 321   --disable-sse3           disable SSE3 optimizations
 322   --disable-ssse3          disable SSSE3 optimizations
 323   --disable-sse4           disable SSE4 optimizations
 324   --disable-sse42          disable SSE4.2 optimizations
 325   --disable-avx            disable AVX optimizations
 326   --disable-xop            disable XOP optimizations
 327   --disable-fma3           disable FMA3 optimizations
 328   --disable-fma4           disable FMA4 optimizations
 329   --disable-avx2           disable AVX2 optimizations
 330   --disable-armv5te        disable armv5te optimizations
 331   --disable-armv6          disable armv6 optimizations
 332   --disable-armv6t2        disable armv6t2 optimizations
 333   --disable-vfp            disable VFP optimizations
 334   --disable-neon           disable NEON optimizations
 335   --disable-inline-asm     disable use of inline assembly
 336   --disable-x86asm         disable use of standalone x86 assembly
 337
 338 Developer options (useful when working on Libav itself):
 339   --disable-debug          disable debugging symbols
 340   --enable-debug=LEVEL     set the debug level [$debuglevel]
 341   --disable-optimizations  disable compiler optimizations
 342   --enable-extra-warnings  enable more compiler warnings
 343   --samples=PATH           location of test samples for FATE, if not set use
 344                            \$LIBAV_SAMPLES at make invocation time.
 345   --enable-neon-clobber-test check NEON registers for clobbering (should be
 346                            used only for debugging purposes)
 347   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 348                            should be used only for debugging purposes)
 349   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 350                            (only applies to --disable-optimizations builds)
 351   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 352                            in the name) of tests whose result is ignored
 353
 354 NOTE: Object files are built at the place where configure is launched.
 355 EOF
 356   exit 0
 357 }
 358
 359 log(){
 360     echo "$@" >> $logfile
 361 }
 362
 363 log_file(){
 364     log BEGIN $1
 365     i=1
 366     while read line; do
 367         printf '%5s   %s\n' "${i}" "${line}"
 368         i=$(($i+1))
 369     done < $1 >> $logfile
 370     log END $1
 371 }
 372
 373 echolog(){
 374     log "$@"
 375     echo "$@"
 376 }
 377
 378 warn(){
 379     log "WARNING: $*"
 380     WARNINGS="${WARNINGS}WARNING: $*\n"
 381 }
 382
 383 die(){
 384     echolog "$@"
 385     cat <<EOF
 386
 387 If you think configure made a mistake, make sure you are using the latest
 388 version from Git.  If the latest version fails, report the problem to the
 389 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
 390 EOF
 391     if disabled logging; then
 392         cat <<EOF
 393 Rerun configure with logging enabled (do not use --disable-logging), and
 394 include the log this produces with your report.
 395 EOF
 396     else
 397         cat <<EOF
 398 Include the log file "$logfile" produced by configure as this will help
 399 solving the problem.
 400 EOF
 401     fi
 402     exit 1
 403 }
 404
 405 # Avoid locale weirdness, besides we really just want to translate ASCII.
 406 toupper(){
 407     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 408 }
 409
 410 tolower(){
 411     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 412 }
 413
 414 c_escape(){
 415     echo "$*" | sed 's/["\\]/\\\0/g'
 416 }
 417
 418 sh_quote(){
 419     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 420     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 421     echo "$v"
 422 }
 423
 424 cleanws(){
 425     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
 426 }
 427
 428 filter(){
 429     pat=$1
 430     shift
 431     for v; do
 432         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
 433     done
 434 }
 435
 436 filter_out(){
 437     pat=$1
 438     shift
 439     for v; do
 440         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
 441     done
 442 }
 443
 444 map(){
 445     m=$1
 446     shift
 447     for v; do eval $m; done
 448 }
 449
 450 add_suffix(){
 451     suffix=$1
 452     shift
 453     for v; do echo ${v}${suffix}; done
 454 }
 455
 456 set_all(){
 457     value=$1
 458     shift
 459     for var in $*; do
 460         eval $var=$value
 461     done
 462 }
 463
 464 set_weak(){
 465     value=$1
 466     shift
 467     for var; do
 468         eval : \${$var:=$value}
 469     done
 470 }
 471
 472 sanitize_var_name(){
 473     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 474 }
 475
 476 set_sanitized(){
 477     var=$1
 478     shift
 479     eval $(sanitize_var_name "$var")='$*'
 480 }
 481
 482 get_sanitized(){
 483     eval echo \$$(sanitize_var_name "$1")
 484 }
 485
 486 pushvar(){
 487     for pvar in $*; do
 488         eval level=\${${pvar}_level:=0}
 489         eval ${pvar}_${level}="\$$pvar"
 490         eval ${pvar}_level=$(($level+1))
 491     done
 492 }
 493
 494 popvar(){
 495     for pvar in $*; do
 496         eval level=\${${pvar}_level:-0}
 497         test $level = 0 && continue
 498         eval level=$(($level-1))
 499         eval $pvar="\${${pvar}_${level}}"
 500         eval ${pvar}_level=$level
 501         eval unset ${pvar}_${level}
 502     done
 503 }
 504
 505 enable(){
 506     set_all yes $*
 507 }
 508
 509 disable(){
 510     set_all no $*
 511 }
 512
 513 enable_weak(){
 514     set_weak yes $*
 515 }
 516
 517 disable_weak(){
 518     set_weak no $*
 519 }
 520
 521 enable_sanitized(){
 522     for var; do
 523         enable $(sanitize_var_name $var)
 524     done
 525 }
 526
 527 disable_sanitized(){
 528     for var; do
 529         disable $(sanitize_var_name $var)
 530     done
 531 }
 532
 533 do_enable_deep(){
 534     for var; do
 535         enabled $var && continue
 536         eval sel="\$${var}_select"
 537         eval sgs="\$${var}_suggest"
 538         pushvar var sgs
 539         enable_deep $sel
 540         popvar sgs
 541         enable_deep_weak $sgs
 542         popvar var
 543     done
 544 }
 545
 546 enable_deep(){
 547     do_enable_deep $*
 548     enable $*
 549 }
 550
 551 enable_deep_weak(){
 552     for var; do
 553         disabled $var && continue
 554         pushvar var
 555         do_enable_deep $var
 556         popvar var
 557         enable_weak $var
 558     done
 559 }
 560
 561 enabled(){
 562     test "${1#!}" = "$1" && op="=" || op="!="
 563     eval test "x\$${1#!}" $op "xyes"
 564 }
 565
 566 disabled(){
 567     test "${1#!}" = "$1" && op="=" || op="!="
 568     eval test "x\$${1#!}" $op "xno"
 569 }
 570
 571 enabled_all(){
 572     for opt; do
 573         enabled $opt || return 1
 574     done
 575 }
 576
 577 disabled_all(){
 578     for opt; do
 579         disabled $opt || return 1
 580     done
 581 }
 582
 583 enabled_any(){
 584     for opt; do
 585         enabled $opt && return 0
 586     done
 587 }
 588
 589 disabled_any(){
 590     for opt; do
 591         disabled $opt && return 0
 592     done
 593     return 1
 594 }
 595
 596 set_default(){
 597     for opt; do
 598         eval : \${$opt:=\$${opt}_default}
 599     done
 600 }
 601
 602 is_in(){
 603     value=$1
 604     shift
 605     for var in $*; do
 606         [ $var = $value ] && return 0
 607     done
 608     return 1
 609 }
 610
 611 check_deps(){
 612     for cfg; do
 613         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 614         disabled ${cfg}_checking && continue
 615         enable ${cfg}_checking
 616
 617         eval dep_all="\$${cfg}_deps"
 618         eval dep_any="\$${cfg}_deps_any"
 619         eval dep_con="\$${cfg}_conflict"
 620         eval dep_sel="\$${cfg}_select"
 621         eval dep_sgs="\$${cfg}_suggest"
 622         eval dep_ifa="\$${cfg}_if"
 623         eval dep_ifn="\$${cfg}_if_any"
 624
 625         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 626         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
 627         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
 628
 629         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 630         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 631         enabled_all  $dep_all || disable $cfg
 632         enabled_any  $dep_any || disable $cfg
 633         disabled_all $dep_con || disable $cfg
 634         disabled_any $dep_sel && disable $cfg
 635
 636         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
 637
 638         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
 639             # filter out library deps, these do not belong in extralibs
 640             is_in $dep $LIBRARY_LIST && continue
 641             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
 642         done
 643
 644         disable ${cfg}_checking
 645     done
 646 }
 647
 648 print_config(){
 649     pfx=$1
 650     files=$2
 651     shift 2
 652     map 'eval echo "$v \${$v:-no}"' "$@" |
 653     awk "BEGIN { split(\"$files\", files) }
 654         {
 655             c = \"$pfx\" toupper(\$1);
 656             v = \$2;
 657             sub(/yes/, 1, v);
 658             sub(/no/,  0, v);
 659             for (f in files) {
 660                 file = files[f];
 661                 if (file ~ /\\.h\$/) {
 662                     printf(\"#define %s %d\\n\", c, v) >>file;
 663                 } else if (file ~ /\\.asm\$/) {
 664                     printf(\"%%define %s %d\\n\", c, v) >>file;
 665                 } else if (file ~ /\\.mak\$/) {
 666                     n = -v ? \"\" : \"!\";
 667                     printf(\"%s%s=yes\\n\", n, c) >>file;
 668                 }
 669             }
 670         }"
 671 }
 672
 673 print_enabled(){
 674     suf=$1
 675     shift
 676     for v; do
 677         enabled $v && printf "%s\n" ${v%$suf}
 678     done
 679 }
 680
 681 append(){
 682     var=$1
 683     shift
 684     eval "$var=\"\$$var $*\""
 685 }
 686
 687 prepend(){
 688     var=$1
 689     shift
 690     eval "$var=\"$* \$$var\""
 691 }
 692
 693 unique(){
 694     var=$1
 695     uniq_list=""
 696     for tok in $(eval echo \$$var); do
 697         uniq_list="$(filter_out $tok $uniq_list) $tok"
 698     done
 699     eval "$var=\"${uniq_list}\""
 700 }
 701
 702 resolve(){
 703     var=$1
 704     tmpvar=
 705     for entry in $(eval echo \$$var); do
 706         tmpvar="$tmpvar $(eval echo \$${entry})"
 707     done
 708     eval "$var=\"${tmpvar}\""
 709 }
 710
 711 add_cppflags(){
 712     append CPPFLAGS "$@"
 713 }
 714
 715 add_cflags(){
 716     append CFLAGS $($cflags_filter "$@")
 717 }
 718
 719 add_cflags_headers(){
 720     append CFLAGS_HEADERS $($cflags_filter "$@")
 721 }
 722
 723 add_objcflags(){
 724     append OBJCFLAGS $($objcflags_filter "$@")
 725 }
 726
 727 add_asflags(){
 728     append ASFLAGS $($asflags_filter "$@")
 729 }
 730
 731 add_ldflags(){
 732     append LDFLAGS $($ldflags_filter "$@")
 733 }
 734
 735 add_ldexeflags(){
 736     append LDEXEFLAGS $($ldflags_filter "$@")
 737 }
 738
 739 add_ldsoflags(){
 740     append LDSOFLAGS $($ldflags_filter "$@")
 741 }
 742
 743 add_extralibs(){
 744     prepend extralibs $($ldflags_filter "$@")
 745 }
 746
 747 add_stripflags(){
 748     append STRIPFLAGS "$@"
 749 }
 750
 751 add_host_cppflags(){
 752     append host_cppflags "$@"
 753 }
 754
 755 add_host_cflags(){
 756     append host_cflags $($host_cflags_filter "$@")
 757 }
 758
 759 add_host_ldflags(){
 760     append host_ldflags $($host_ldflags_filter "$@")
 761 }
 762
 763 add_compat(){
 764     append compat_objs $1
 765     shift
 766     map 'add_cppflags -D$v' "$@"
 767 }
 768
 769 test_cmd(){
 770     log "$@"
 771     "$@" >> $logfile 2>&1
 772 }
 773
 774 cc_e(){
 775     eval printf '%s\\n' $CC_E
 776 }
 777
 778 cc_o(){
 779     eval printf '%s\\n' $CC_O
 780 }
 781
 782 as_o(){
 783     eval printf '%s\\n' $AS_O
 784 }
 785
 786 x86asm_o(){
 787     eval printf '%s\\n' $X86ASM_O
 788 }
 789
 790 ld_o(){
 791     eval printf '%s\\n' $LD_O
 792 }
 793
 794 hostcc_e(){
 795     eval printf '%s\\n' $HOSTCC_E
 796 }
 797
 798 hostcc_o(){
 799     eval printf '%s\\n' $HOSTCC_O
 800 }
 801
 802 test_cc(){
 803     log test_cc "$@"
 804     cat > $TMPC
 805     log_file $TMPC
 806     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 807 }
 808
 809 test_objcc(){
 810     log test_objcc "$@"
 811     cat > $TMPC
 812     log_file $TMPC
 813     test_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
 814 }
 815
 816 test_cpp(){
 817     log test_cpp "$@"
 818     cat > $TMPC
 819     log_file $TMPC
 820     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 821 }
 822
 823 test_as(){
 824     log test_as "$@"
 825     cat > $TMPS
 826     log_file $TMPS
 827     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 828 }
 829
 830 test_x86asm(){
 831     log test_x86asm "$@"
 832     echo "$1" > $TMPASM
 833     log_file $TMPASM
 834     shift
 835     test_cmd $x86asmexe $X86ASMFLAGS "$@" $(x86asm_o $TMPO) $TMPASM
 836 }
 837
 838 check_cmd(){
 839     log check_cmd "$@"
 840     cmd=$1
 841     disabled $cmd && return
 842     disable $cmd
 843     test_cmd $@ && enable $cmd
 844 }
 845
 846 check_as(){
 847     log check_as "$@"
 848     name=$1
 849     code=$2
 850     shift 2
 851     disable $name
 852     test_as $@ <<EOF && enable $name
 853 $code
 854 EOF
 855 }
 856
 857 check_inline_asm(){
 858     log check_inline_asm "$@"
 859     name="$1"
 860     code="$2"
 861     shift 2
 862     disable $name
 863     test_cc "$@" <<EOF && enable $name
 864 void foo(void){ __asm__ volatile($code); }
 865 EOF
 866 }
 867
 868 check_insn(){
 869     log check_insn "$@"
 870     check_inline_asm ${1}_inline "\"$2\""
 871     check_as ${1}_external "$2"
 872 }
 873
 874 check_x86asm(){
 875     log check_x86asm "$@"
 876     name=$1
 877     shift
 878     disable $name
 879     test_x86asm "$@" && enable $name
 880 }
 881
 882 test_ld(){
 883     log test_ld "$@"
 884     flags=$(filter_out '-l*' "$@")
 885     libs=$(filter '-l*' "$@")
 886     test_cc $($cflags_filter $flags) || return
 887     flags=$($ldflags_filter $flags)
 888     libs=$($ldflags_filter $libs)
 889     test_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 890 }
 891
 892 check_ld(){
 893     log check_ld "$@"
 894     name=$1
 895     shift
 896     disable $name
 897     test_ld $@ && enable $name
 898 }
 899
 900 print_include(){
 901     hdr=$1
 902     test "${hdr%.h}" = "${hdr}" &&
 903         echo "#include $hdr"    ||
 904         echo "#include <$hdr>"
 905 }
 906
 907 test_code(){
 908     log test_code "$@"
 909     check=$1
 910     headers=$2
 911     code=$3
 912     shift 3
 913     {
 914         for hdr in $headers; do
 915             print_include $hdr
 916         done
 917         echo "int main(void) { $code; return 0; }"
 918     } | test_$check "$@"
 919 }
 920
 921 check_cppflags(){
 922     log check_cppflags "$@"
 923     test_cpp "$@" <<EOF && add_cppflags "$@"
 924 #include <stdlib.h>;
 925 EOF
 926 }
 927
 928 test_cflags(){
 929     log test_cflags "$@"
 930     set -- $($cflags_filter "$@")
 931     test_cc "$@" <<EOF
 932 int x;
 933 EOF
 934 }
 935
 936 check_cflags(){
 937     log check_cflags "$@"
 938     test_cflags "$@" && add_cflags "$@"
 939 }
 940
 941 test_objcflags(){
 942     log test_objcflags "$@"
 943     set -- $($objcflags_filter "$@")
 944     test_objcc "$@" <<EOF
 945 int x;
 946 EOF
 947 }
 948
 949 check_objcflags(){
 950     log check_objcflags "$@"
 951     test_objcflags "$@" && add_objcflags "$@"
 952 }
 953
 954 test_ldflags(){
 955     log test_ldflags "$@"
 956     set -- $($ldflags_filter "$@")
 957     test_ld "$@" <<EOF
 958 int main(void){ return 0; }
 959 EOF
 960 }
 961
 962 check_ldflags(){
 963     log check_ldflags "$@"
 964     test_ldflags "$@" && add_ldflags "$@"
 965 }
 966
 967 test_stripflags(){
 968     log test_stripflags "$@"
 969     # call test_cc to get a fresh TMPO
 970     test_cc <<EOF
 971 int main(void) { return 0; }
 972 EOF
 973     test_cmd $strip $STRIPFLAGS "$@" $TMPO
 974 }
 975
 976 check_stripflags(){
 977     log check_stripflags "$@"
 978     test_stripflags "$@" && add_stripflags "$@"
 979 }
 980
 981 check_headers(){
 982     log check_headers "$@"
 983     headers=$1
 984     shift
 985     disable_sanitized $headers
 986     {
 987         for hdr in $headers; do
 988             print_include $hdr
 989         done
 990         echo "int x;"
 991     } | test_cpp "$@" && enable_sanitized $headers
 992 }
 993
 994 check_func(){
 995     log check_func "$@"
 996     func=$1
 997     shift
 998     disable $func
 999     test_ld "$@" <<EOF && enable $func
1000 extern int $func();
1001 int main(void){ $func(); }
1002 EOF
1003 }
1004
1005 check_mathfunc(){
1006     log check_mathfunc "$@"
1007     func=$1
1008     narg=$2
1009     shift 2
1010     test $narg = 2 && args="f, g" || args="f"
1011     disable $func
1012     test_ld "$@" <<EOF && enable $func
1013 #include <math.h>
1014 float foo(float f, float g) { return $func($args); }
1015 int main(void){ return 0; }
1016 EOF
1017 }
1018
1019 check_func_headers(){
1020     log check_func_headers "$@"
1021     headers=$1
1022     funcs=$2
1023     shift 2
1024     {
1025         for hdr in $headers; do
1026             print_include $hdr
1027         done
1028         for func in $funcs; do
1029             echo "long check_$func(void) { return (long) $func; }"
1030         done
1031         echo "int main(void) { return 0; }"
1032     } | test_ld "$@" && enable $funcs && enable_sanitized $headers
1033 }
1034
1035 test_cpp_condition(){
1036     log test_cpp_condition "$@"
1037     header=$1
1038     condition=$2
1039     shift 2
1040     test_cpp "$@" <<EOF
1041 #include <$header>
1042 #if !($condition)
1043 #error "unsatisfied condition: $condition"
1044 #endif
1045 EOF
1046 }
1047
1048 check_cpp_condition(){
1049     log check_cpp_condition "$@"
1050     name=$1
1051     shift 1
1052     disable $name
1053     test_cpp_condition "$@" && enable $name
1054 }
1055
1056 check_lib(){
1057     log check_lib "$@"
1058     name="$1"
1059     headers="$2"
1060     funcs="$3"
1061     shift 3
1062     disable $name
1063     check_func_headers "$headers" "$funcs" "$@" &&
1064         enable $name && eval ${name}_extralibs="\$@"
1065 }
1066
1067 test_pkg_config(){
1068     log test_pkg_config "$@"
1069     name="$1"
1070     pkg_version="$2"
1071     pkg="${2%% *}"
1072     headers="$3"
1073     funcs="$4"
1074     shift 4
1075     disable $name
1076     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1077     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1078     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1079     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1080         enable $name &&
1081         set_sanitized "${name}_cflags"    $pkg_cflags &&
1082         set_sanitized "${name}_extralibs" $pkg_libs
1083 }
1084
1085 check_pkg_config(){
1086     log check_pkg_config "$@"
1087     name="$1"
1088     test_pkg_config "$@" &&
1089         eval add_cflags \$${name}_cflags
1090 }
1091
1092 test_exec(){
1093     log test_exec "$@"
1094     test_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1095 }
1096
1097 check_exec_crash(){
1098     log check_exec_crash "$@"
1099     code=$(cat)
1100
1101     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1102     # are safe but may not be available everywhere.  Thus we use
1103     # raise(SIGTERM) instead.  The check is run in a subshell so we
1104     # can redirect the "Terminated" message from the shell.  SIGBUS
1105     # is not defined by standard C so it is used conditionally.
1106
1107     (test_exec "$@") >> $logfile 2>&1 <<EOF
1108 #include <signal.h>
1109 static void sighandler(int sig){
1110     raise(SIGTERM);
1111 }
1112 int foo(void){
1113     $code
1114 }
1115 int (*func_ptr)(void) = foo;
1116 int main(void){
1117     signal(SIGILL, sighandler);
1118     signal(SIGFPE, sighandler);
1119     signal(SIGSEGV, sighandler);
1120 #ifdef SIGBUS
1121     signal(SIGBUS, sighandler);
1122 #endif
1123     return func_ptr();
1124 }
1125 EOF
1126 }
1127
1128 check_type(){
1129     log check_type "$@"
1130     headers=$1
1131     type=$2
1132     shift 2
1133     disable_sanitized "$type"
1134     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1135 }
1136
1137 check_struct(){
1138     log check_struct "$@"
1139     headers=$1
1140     struct=$2
1141     member=$3
1142     shift 3
1143     disable_sanitized "${struct}_${member}"
1144     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1145         enable_sanitized "${struct}_${member}"
1146 }
1147
1148 check_builtin(){
1149     log check_builtin "$@"
1150     name=$1
1151     shift
1152     disable "$name"
1153     test_code ld "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 check_cc(){
1167     log check_cc "$@"
1168     name=$1
1169     shift
1170     disable "$name"
1171     test_code cc "$@" && enable "$name"
1172 }
1173
1174 require(){
1175     log require "$@"
1176     name_version="$1"
1177     name="${1%% *}"
1178     shift
1179     check_lib $name "$@" || die "ERROR: $name_version not found"
1180 }
1181
1182 require_cc(){
1183     log require_cc "$@"
1184     name="$1"
1185     check_cc "$@" || die "ERROR: $name failed"
1186 }
1187
1188 require_headers(){
1189     log require_headers "$@"
1190     headers="$1"
1191     check_headers "$@" || die "ERROR: $headers not found"
1192 }
1193
1194 require_cpp_condition(){
1195     log require_cpp_condition "$@"
1196     condition="$2"
1197     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1198 }
1199
1200 require_pkg_config(){
1201     log require_pkg_config "$@"
1202     pkg_version="$2"
1203     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1204 }
1205
1206 test_host_cc(){
1207     log test_host_cc "$@"
1208     cat > $TMPC
1209     log_file $TMPC
1210     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1211 }
1212
1213 test_host_cpp(){
1214     log test_host_cpp "$@"
1215     cat > $TMPC
1216     log_file $TMPC
1217     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1218 }
1219
1220 check_host_cppflags(){
1221     log check_host_cppflags "$@"
1222     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1223 #include <stdlib.h>;
1224 EOF
1225 }
1226
1227 check_host_cflags(){
1228     log check_host_cflags "$@"
1229     set -- $($host_cflags_filter "$@")
1230     test_host_cc "$@" <<EOF && append host_cflags "$@"
1231 int x;
1232 EOF
1233 }
1234
1235 test_host_cpp_condition(){
1236     log test_host_cpp_condition "$@"
1237     header=$1
1238     condition=$2
1239     shift 2
1240     test_host_cpp "$@" <<EOF
1241 #include <$header>
1242 #if !($condition)
1243 #error "unsatisfied condition: $condition"
1244 #endif
1245 EOF
1246 }
1247
1248 check_host_cpp_condition(){
1249     log check_host_cpp_condition "$@"
1250     name=$1
1251     shift 1
1252     disable $name
1253     test_host_cpp_condition "$@" && enable $name
1254 }
1255
1256 cp_if_changed(){
1257     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1258     mkdir -p "$(dirname $2)"
1259     cp -f "$1" "$2"
1260 }
1261
1262 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1263 # system-dependent things.
1264
1265 AVCODEC_COMPONENTS="
1266     bsfs
1267     decoders
1268     encoders
1269     hwaccels
1270     parsers
1271 "
1272
1273 AVDEVICE_COMPONENTS="
1274     indevs
1275 "
1276 AVFILTER_COMPONENTS="
1277     filters
1278 "
1279 AVFORMAT_COMPONENTS="
1280     demuxers
1281     muxers
1282     protocols
1283 "
1284
1285 COMPONENT_LIST="
1286     $AVCODEC_COMPONENTS
1287     $AVDEVICE_COMPONENTS
1288     $AVFILTER_COMPONENTS
1289     $AVFORMAT_COMPONENTS
1290 "
1291
1292 EXAMPLE_LIST="
1293     decode_audio_example
1294     decode_video_example
1295     encode_audio_example
1296     encode_video_example
1297     filter_audio_example
1298     metadata_example
1299     output_example
1300     qsvdec_example
1301     transcode_aac_example
1302 "
1303
1304 # catchall list of things that require external libs to link
1305 EXTRALIBS_LIST="
1306     cpu_init
1307     cws2fws
1308 "
1309
1310 HWACCEL_LIBRARY_NONFREE_LIST="
1311     cuda
1312     cuvid
1313     libnpp
1314 "
1315 HWACCEL_LIBRARY_LIST="
1316     $HWACCEL_LIBRARY_NONFREE_LIST
1317     amf
1318     d3d11va
1319     dxva2
1320     libmfx
1321     mmal
1322     nvenc
1323     omx
1324     vaapi
1325     vda
1326     vdpau
1327 "
1328
1329 EXTERNAL_LIBRARY_GPL_LIST="
1330     libcdio
1331     libx264
1332     libx265
1333     libxavs
1334     libxvid
1335 "
1336
1337 EXTERNAL_LIBRARY_NONFREE_LIST="
1338     libfaac
1339     libfdk_aac
1340     openssl
1341 "
1342
1343 EXTERNAL_LIBRARY_VERSION3_LIST="
1344     libopencore_amrnb
1345     libopencore_amrwb
1346     libvo_aacenc
1347     libvo_amrwbenc
1348     mbedtls
1349 "
1350
1351 EXTERNAL_LIBRARY_LIST="
1352     $EXTERNAL_LIBRARY_GPL_LIST
1353     $EXTERNAL_LIBRARY_NONFREE_LIST
1354     $EXTERNAL_LIBRARY_VERSION3_LIST
1355     avisynth
1356     avxsynth
1357     frei0r
1358     gnutls
1359     libaom
1360     libbs2b
1361     libdav1d
1362     libdc1394
1363     libdcadec
1364     libfontconfig
1365     libfreetype
1366     libgsm
1367     libhdcd
1368     libilbc
1369     libjack
1370     libkvazaar
1371     libmp3lame
1372     libopencv
1373     libopenh264
1374     libopenjpeg
1375     libopus
1376     libpulse
1377     librtmp
1378     libschroedinger
1379     libsnappy
1380     libspeex
1381     libsrt
1382     libtheora
1383     libtwolame
1384     libvorbis
1385     libvpx
1386     libwavpack
1387     libwebp
1388     libxcb
1389     libxcb_shm
1390     libxcb_xfixes
1391 "
1392
1393 SYSTEM_LIBRARY_LIST="
1394     bzlib
1395     zlib
1396 "
1397
1398 FEATURE_LIST="
1399     gray
1400     hardcoded_tables
1401     omx_rpi
1402     runtime_cpudetect
1403     safe_bitstream_reader
1404     shared
1405     small
1406     sram
1407     static
1408     swscale_alpha
1409 "
1410
1411 LIBRARY_LIST="
1412     avcodec
1413     avdevice
1414     avfilter
1415     avformat
1416     avresample
1417     avutil
1418     swscale
1419 "
1420
1421 LICENSE_LIST="
1422     gpl
1423     nonfree
1424     version3
1425 "
1426
1427 PROGRAM_LIST="
1428     avconv
1429     avplay
1430     avprobe
1431 "
1432
1433 SUBSYSTEM_LIST="
1434     dct
1435     doc
1436     error_resilience
1437     faan
1438     fft
1439     lsp
1440     lzo
1441     mdct
1442     network
1443     rdft
1444 "
1445
1446 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1447 CONFIG_LIST="
1448     $EXAMPLE_LIST
1449     $EXTERNAL_LIBRARY_LIST
1450     $HWACCEL_LIBRARY_LIST
1451     $FEATURE_LIST
1452     $LICENSE_LIST
1453     $LIBRARY_LIST
1454     $PROGRAM_LIST
1455     $SUBSYSTEM_LIST
1456     $SYSTEM_LIBRARY_LIST
1457     neon_clobber_test
1458     pic
1459     pod2man
1460     texi2html
1461     thumb
1462     valgrind_backtrace
1463     xmm_clobber_test
1464     $COMPONENT_LIST
1465 "
1466
1467 THREADS_LIST="
1468     pthreads
1469     w32threads
1470 "
1471
1472 ATOMICS_LIST="
1473     atomics_gcc
1474     atomics_suncc
1475     atomics_win32
1476 "
1477
1478 ARCH_LIST="
1479     aarch64
1480     alpha
1481     arm
1482     avr32
1483     avr32_ap
1484     avr32_uc
1485     bfin
1486     ia64
1487     m68k
1488     mips
1489     mips64
1490     parisc
1491     ppc
1492     ppc64
1493     s390
1494     sh4
1495     sparc
1496     sparc64
1497     tilegx
1498     tilepro
1499     tomi
1500     x86
1501     x86_32
1502     x86_64
1503 "
1504
1505 ARCH_EXT_LIST_ARM="
1506     armv5te
1507     armv6
1508     armv6t2
1509     armv8
1510     neon
1511     vfp
1512     vfpv3
1513 "
1514
1515 ARCH_EXT_LIST_X86_SIMD="
1516     amd3dnow
1517     amd3dnowext
1518     avx
1519     avx2
1520     fma3
1521     fma4
1522     mmx
1523     mmxext
1524     sse
1525     sse2
1526     sse3
1527     sse4
1528     sse42
1529     ssse3
1530     xop
1531 "
1532
1533 ARCH_EXT_LIST_PPC="
1534     altivec
1535     dcbzl
1536     ldbrx
1537     power8
1538     ppc4xx
1539     vsx
1540 "
1541
1542 ARCH_EXT_LIST_X86="
1543     $ARCH_EXT_LIST_X86_SIMD
1544     cpunop
1545     i686
1546 "
1547
1548 ARCH_EXT_LIST_MIPS="
1549     loongson
1550     mips32r1
1551     mips64r1
1552     mips32r2
1553     mips64r2
1554     mips32r6
1555     mips64r6
1556 "
1557
1558 ARCH_EXT_LIST="
1559     $ARCH_EXT_LIST_ARM
1560     $ARCH_EXT_LIST_MIPS
1561     $ARCH_EXT_LIST_PPC
1562     $ARCH_EXT_LIST_X86
1563     vis
1564 "
1565
1566 ARCH_FEATURES="
1567     aligned_stack
1568     fast_64bit
1569     fast_clz
1570     fast_cmov
1571     local_aligned_8
1572     local_aligned_16
1573     local_aligned_32
1574     simd_align_16
1575     simd_align_32
1576 "
1577
1578 BUILTIN_LIST="
1579     atomic_cas_ptr
1580     machine_rw_barrier
1581     MemoryBarrier
1582     mm_empty
1583     rdtsc
1584     sem_timedwait
1585     sync_val_compare_and_swap
1586 "
1587 HAVE_LIST_CMDLINE="
1588     inline_asm
1589     symver
1590     x86asm
1591 "
1592
1593 HAVE_LIST_PUB="
1594     bigendian
1595     fast_unaligned
1596 "
1597
1598 HEADERS_LIST="
1599     AVFoundation_AVFoundation_h
1600     arpa_inet_h
1601     cdio_paranoia_h
1602     cdio_paranoia_paranoia_h
1603     dispatch_dispatch_h
1604     dev_bktr_ioctl_bt848_h
1605     dev_bktr_ioctl_meteor_h
1606     dev_ic_bt8xx_h
1607     dev_video_bktr_ioctl_bt848_h
1608     dev_video_meteor_ioctl_meteor_h
1609     direct_h
1610     dxgidebug_h
1611     dxva_h
1612     io_h
1613     machine_ioctl_bt848_h
1614     machine_ioctl_meteor_h
1615     malloc_h
1616     poll_h
1617     sys_param_h
1618     sys_resource_h
1619     sys_select_h
1620     sys_soundcard_h
1621     sys_time_h
1622     sys_un_h
1623     sys_videoio_h
1624     unistd_h
1625     valgrind_valgrind_h
1626     windows_h
1627     winsock2_h
1628 "
1629
1630 INTRINSICS_LIST="
1631     intrinsics_neon
1632 "
1633
1634 MATH_FUNCS="
1635     atanf
1636     atan2f
1637     cbrtf
1638     cosf
1639     exp2
1640     exp2f
1641     expf
1642     isinf
1643     isnan
1644     ldexpf
1645     llrint
1646     llrintf
1647     log2
1648     log2f
1649     log10f
1650     lrint
1651     lrintf
1652     powf
1653     rint
1654     round
1655     roundf
1656     sinf
1657     trunc
1658     truncf
1659 "
1660
1661 SYSTEM_FEATURES="
1662     dos_paths
1663     libc_msvcrt
1664     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1665     section_data_rel_ro
1666     threads
1667     uwp
1668 "
1669
1670 SYSTEM_FUNCS="
1671     aligned_malloc
1672     clock_gettime
1673     closesocket
1674     CommandLineToArgvW
1675     fcntl
1676     getaddrinfo
1677     gethrtime
1678     getopt
1679     GetProcessAffinityMask
1680     GetProcessMemoryInfo
1681     GetProcessTimes
1682     getrusage
1683     GetSystemTimeAsFileTime
1684     gettimeofday
1685     gmtime_r
1686     inet_aton
1687     isatty
1688     localtime_r
1689     mach_absolute_time
1690     MapViewOfFile
1691     memalign
1692     mmap
1693     mprotect
1694     nanosleep
1695     posix_memalign
1696     sched_getaffinity
1697     SetConsoleTextAttribute
1698     setmode
1699     setrlimit
1700     Sleep
1701     strerror_r
1702     sysconf
1703     sysctl
1704     usleep
1705     VirtualAlloc
1706 "
1707
1708 SYSTEM_LIBRARIES="
1709     bcrypt
1710     sdl
1711     vaapi_1
1712     vaapi_drm
1713     vaapi_x11
1714     vdpau_x11
1715 "
1716
1717 TOOLCHAIN_FEATURES="
1718     as_arch_directive
1719     as_fpu_directive
1720     as_func
1721     as_object_arch
1722     asm_mod_q
1723     blocks_extension
1724     ebp_available
1725     ebx_available
1726     gnu_as
1727     ibm_asm
1728     inline_asm_labels
1729     pragma_deprecated
1730     symver_asm_label
1731     symver_gnu_asm
1732     vfp_args
1733     xform_asm
1734     xmm_clobbers
1735 "
1736
1737 TYPES_LIST="
1738     CUVIDDECODECREATEINFO_bitDepthMinus8
1739     socklen_t
1740     struct_addrinfo
1741     struct_group_source_req
1742     struct_ip_mreq_source
1743     struct_ipv6_mreq
1744     struct_pollfd
1745     struct_rusage_ru_maxrss
1746     struct_sockaddr_in6
1747     struct_sockaddr_sa_len
1748     struct_sockaddr_storage
1749     struct_v4l2_frmivalenum_discrete
1750 "
1751
1752 HAVE_LIST="
1753     $ARCH_EXT_LIST
1754     $(add_suffix _external $ARCH_EXT_LIST)
1755     $(add_suffix _inline   $ARCH_EXT_LIST)
1756     $ARCH_FEATURES
1757     $BUILTIN_LIST
1758     $HAVE_LIST_CMDLINE
1759     $HAVE_LIST_PUB
1760     $HEADERS_LIST
1761     $INTRINSICS_LIST
1762     $MATH_FUNCS
1763     $SYSTEM_FEATURES
1764     $SYSTEM_FUNCS
1765     $SYSTEM_LIBRARIES
1766     $THREADS_LIST
1767     $TOOLCHAIN_FEATURES
1768     $TYPES_LIST
1769 "
1770
1771 # options emitted with CONFIG_ prefix but not available on the command line
1772 CONFIG_EXTRA="
1773     aandcttables
1774     ac3dsp
1775     adts_header
1776     audio_frame_queue
1777     audiodsp
1778     blockdsp
1779     bswapdsp
1780     cabac
1781     cbs
1782     cbs_h264
1783     cbs_h265
1784     cbs_mpeg2
1785     dirac_parse
1786     dvprofile
1787     faandct
1788     faanidct
1789     fdctdsp
1790     flacdsp
1791     fmtconvert
1792     g722dsp
1793     gmp
1794     golomb
1795     gplv3
1796     h263dsp
1797     h264chroma
1798     h264dsp
1799     h264parse
1800     h264pred
1801     h264qpel
1802     hevcparse
1803     hpeldsp
1804     huffman
1805     huffyuvdsp
1806     huffyuvencdsp
1807     idctdsp
1808     iirfilter
1809     imdct15
1810     intrax8
1811     iso_media
1812     ividsp
1813     jpegtables
1814     lgplv3
1815     libx262
1816     libxcb_shape
1817     lpc
1818     lzf
1819     me_cmp
1820     mpeg_er
1821     mpegaudio
1822     mpegaudiodsp
1823     mpegaudioheader
1824     mpegvideo
1825     mpegvideoenc
1826     mss34dsp
1827     pixblockdsp
1828     qpeldsp
1829     qsv
1830     qsvdec
1831     qsvenc
1832     qsvvpp
1833     rangecoder
1834     riffdec
1835     riffenc
1836     rtpdec
1837     rtpenc_chain
1838     rv34dsp
1839     sinewin
1840     snappy
1841     srtp
1842     startcode
1843     texturedsp
1844     texturedspenc
1845     tpeldsp
1846     vaapi_encode
1847     vc1dsp
1848     videodsp
1849     vp3dsp
1850     vp56dsp
1851     vp8dsp
1852     wma_freqs
1853     wmv2dsp
1854 "
1855
1856 CMDLINE_SELECT="
1857     $ARCH_EXT_LIST
1858     $CONFIG_LIST
1859     $HAVE_LIST_CMDLINE
1860     $THREADS_LIST
1861     asm
1862     cross_compile
1863     debug
1864     extra_warnings
1865     logging
1866     lto
1867     optimizations
1868     rpath
1869 "
1870
1871 PATHS_LIST="
1872     bindir
1873     datadir
1874     docdir
1875     incdir
1876     libdir
1877     mandir
1878     prefix
1879     shlibdir
1880 "
1881
1882 CMDLINE_SET="
1883     $PATHS_LIST
1884     ar
1885     arch
1886     as
1887     cc
1888     objcc
1889     cpu
1890     cross_prefix
1891     custom_allocator
1892     dep_cc
1893     env
1894     extra_version
1895     host_cc
1896     host_cflags
1897     host_extralibs
1898     host_ld
1899     host_ldflags
1900     host_os
1901     ignore_tests
1902     ld
1903     logfile
1904     malloc_prefix
1905     nm
1906     optflags
1907     pkg_config
1908     pkg_config_flags
1909     samples
1910     sysinclude
1911     sysroot
1912     target_exec
1913     target_os
1914     target_path
1915     target_samples
1916     toolchain
1917     x86asmexe
1918 "
1919
1920 CMDLINE_APPEND="
1921     extra_cflags
1922     extra_objcflags
1923     host_cppflags
1924 "
1925
1926 # code dependency declarations
1927
1928 # architecture extensions
1929
1930 armv5te_deps="arm"
1931 armv6_deps="arm"
1932 armv6t2_deps="arm"
1933 armv8_deps="aarch64"
1934 neon_deps_any="aarch64 arm"
1935 intrinsics_neon_deps="neon"
1936 vfp_deps_any="aarch64 arm"
1937 vfpv3_deps="vfp"
1938
1939 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1940
1941 altivec_deps="ppc"
1942 dcbzl_deps="ppc"
1943 ldbrx_deps="ppc"
1944 ppc4xx_deps="ppc"
1945 vsx_deps="altivec"
1946 power8_deps="vsx"
1947
1948 loongson_deps="mips"
1949 mips32r1_deps="mips32"
1950 mips32r2_deps="mips32"
1951 mips32r6_deps="mips32"
1952 mips64r1_deps="mips64"
1953 mips64r2_deps="mips64"
1954 mips64r6_deps="mips64"
1955
1956 vis_deps="sparc"
1957
1958 cpunop_deps="i686"
1959 x86_64_select="i686"
1960 x86_64_suggest="fast_cmov"
1961
1962 amd3dnow_deps="mmx"
1963 amd3dnowext_deps="amd3dnow"
1964 i686_deps="x86"
1965 mmx_deps="x86"
1966 mmxext_deps="mmx"
1967 sse_deps="mmxext"
1968 sse2_deps="sse"
1969 sse3_deps="sse2"
1970 ssse3_deps="sse3"
1971 sse4_deps="ssse3"
1972 sse42_deps="sse4"
1973 avx_deps="sse42"
1974 xop_deps="avx"
1975 fma3_deps="avx"
1976 fma4_deps="avx"
1977 avx2_deps="avx"
1978
1979 mmx_external_deps="x86asm"
1980 mmx_inline_deps="inline_asm x86"
1981 mmx_suggest="mmx_external mmx_inline"
1982
1983 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1984     eval dep=\$${ext}_deps
1985     eval ${ext}_external_deps='"${dep}_external"'
1986     eval ${ext}_inline_deps='"${dep}_inline"'
1987     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1988 done
1989
1990 aligned_stack_if_any="aarch64 ppc x86"
1991 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1992 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1993 fast_unaligned_if_any="aarch64 ppc x86"
1994 simd_align_16_if_any="altivec neon sse"
1995 simd_align_32_if_any="avx"
1996
1997 # system capabilities
1998 symver_if_any="symver_asm_label symver_gnu_asm"
1999 valgrind_backtrace_conflict="optimizations"
2000 valgrind_backtrace_deps="valgrind_valgrind_h"
2001
2002 # threading support
2003 atomics_gcc_if="sync_val_compare_and_swap"
2004 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2005 atomics_win32_if="MemoryBarrier"
2006 atomics_native_if_any="$ATOMICS_LIST"
2007 w32threads_deps="atomics_native CONDITION_VARIABLE"
2008 threads_if_any="$THREADS_LIST"
2009
2010 # subsystems
2011 cbs_h264_select="cbs golomb"
2012 cbs_h265_select="cbs golomb"
2013 cbs_mpeg2_select="cbs"
2014 dct_select="rdft"
2015 dirac_parse_select="golomb"
2016 error_resilience_select="me_cmp"
2017 faandct_deps="faan"
2018 faandct_select="fdctdsp"
2019 faanidct_deps="faan"
2020 faanidct_select="idctdsp"
2021 h264dsp_select="startcode"
2022 hevcparse_select="golomb"
2023 intrax8_select="blockdsp idctdsp"
2024 mdct_select="fft"
2025 rdft_select="fft"
2026 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2027 mpeg_er_select="error_resilience"
2028 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2029 mpegaudiodsp_select="dct"
2030 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
2031 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2032 vc1dsp_select="h264chroma qpeldsp startcode"
2033
2034 # decoders / encoders
2035 aac_decoder_select="adts_header imdct15 mdct sinewin"
2036 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2037 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2038 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2039 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2040 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2041 adpcm_g722_decoder_select="g722dsp"
2042 adpcm_g722_encoder_select="g722dsp"
2043 aic_decoder_select="golomb idctdsp"
2044 alac_encoder_select="lpc"
2045 als_decoder_select="bswapdsp"
2046 amrnb_decoder_select="lsp"
2047 amrwb_decoder_select="lsp"
2048 amv_decoder_select="sp5x_decoder"
2049 ape_decoder_select="bswapdsp"
2050 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2051 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2052 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2053 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2054 atrac1_decoder_select="mdct sinewin"
2055 atrac3_decoder_select="mdct"
2056 atrac3p_decoder_select="mdct sinewin"
2057 bink_decoder_select="blockdsp hpeldsp"
2058 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2059 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2060 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2061 clearvideo_decoder_select="idctdsp"
2062 cllc_decoder_select="bswapdsp"
2063 comfortnoise_encoder_select="lpc"
2064 cook_decoder_select="audiodsp mdct sinewin"
2065 cscd_decoder_select="lzo"
2066 cscd_decoder_suggest="zlib"
2067 dca_decoder_select="fmtconvert mdct"
2068 dds_decoder_select="texturedsp"
2069 dnxhd_decoder_select="blockdsp idctdsp"
2070 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2071 dvvideo_decoder_select="dvprofile idctdsp"
2072 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2073 dxa_decoder_deps="zlib"
2074 dxv_decoder_select="lzf texturedsp"
2075 eac3_decoder_select="ac3_decoder"
2076 eac3_encoder_select="ac3_encoder"
2077 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2078 eatgq_decoder_select="aandcttables idctdsp"
2079 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2080 exr_decoder_deps="zlib"
2081 ffv1_decoder_select="rangecoder"
2082 ffv1_encoder_select="rangecoder"
2083 ffvhuff_decoder_select="huffyuv_decoder"
2084 ffvhuff_encoder_select="huffyuv_encoder"
2085 fic_decoder_select="golomb"
2086 flac_decoder_select="flacdsp"
2087 flac_encoder_select="bswapdsp flacdsp lpc"
2088 flashsv_decoder_deps="zlib"
2089 flashsv_encoder_deps="zlib"
2090 flashsv2_decoder_deps="zlib"
2091 flv_decoder_select="h263_decoder"
2092 flv_encoder_select="h263_encoder"
2093 fourxm_decoder_select="blockdsp bswapdsp"
2094 fraps_decoder_select="bswapdsp huffman"
2095 g2m_decoder_deps="zlib"
2096 g2m_decoder_select="blockdsp idctdsp jpegtables"
2097 h261_decoder_select="mpeg_er mpegvideo"
2098 h261_encoder_select="aandcttables mpegvideoenc"
2099 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2100 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2101 h263i_decoder_select="h263_decoder"
2102 h263p_encoder_select="h263_encoder"
2103 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2104 h264_decoder_suggest="error_resilience"
2105 hap_decoder_select="snappy texturedsp"
2106 hap_encoder_deps="libsnappy"
2107 hap_encoder_select="texturedspenc"
2108 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2109 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2110 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2111 iac_decoder_select="imc_decoder"
2112 imc_decoder_select="bswapdsp fft mdct sinewin"
2113 indeo3_decoder_select="hpeldsp"
2114 indeo4_decoder_select="ividsp"
2115 indeo5_decoder_select="ividsp"
2116 interplay_video_decoder_select="hpeldsp"
2117 jpegls_decoder_select="mjpeg_decoder"
2118 jv_decoder_select="blockdsp"
2119 lagarith_decoder_select="huffyuvdsp"
2120 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2121 magicyuv_decoder_select="huffyuvdsp"
2122 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2123 metasound_decoder_select="lsp mdct sinewin"
2124 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2125 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2126 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2127 mjpegb_decoder_select="mjpeg_decoder"
2128 mlp_decoder_select="mlp_parser"
2129 motionpixels_decoder_select="bswapdsp"
2130 mp1_decoder_select="mpegaudio"
2131 mp1float_decoder_select="mpegaudio"
2132 mp2_decoder_select="mpegaudio"
2133 mp2float_decoder_select="mpegaudio"
2134 mp3_decoder_select="mpegaudio"
2135 mp3adu_decoder_select="mpegaudio"
2136 mp3adufloat_decoder_select="mpegaudio"
2137 mp3float_decoder_select="mpegaudio"
2138 mp3on4_decoder_select="mpegaudio"
2139 mp3on4float_decoder_select="mpegaudio"
2140 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2141 mpc8_decoder_select="mpegaudiodsp"
2142 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2143 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2144 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2145 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2146 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2147 mpeg4_encoder_select="h263_encoder"
2148 msa1_decoder_select="mss34dsp"
2149 msmpeg4v1_decoder_select="h263_decoder"
2150 msmpeg4v2_decoder_select="h263_decoder"
2151 msmpeg4v2_encoder_select="h263_encoder"
2152 msmpeg4v3_decoder_select="h263_decoder"
2153 msmpeg4v3_encoder_select="h263_encoder"
2154 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2155 mts2_decoder_select="mss34dsp"
2156 mxpeg_decoder_select="mjpeg_decoder"
2157 nellymoser_decoder_select="mdct sinewin"
2158 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2159 nuv_decoder_select="idctdsp lzo"
2160 on2avc_decoder_select="mdct"
2161 opus_decoder_deps="avresample"
2162 opus_decoder_select="imdct15"
2163 png_decoder_deps="zlib"
2164 png_encoder_deps="zlib"
2165 png_encoder_select="huffyuvencdsp"
2166 prores_decoder_select="idctdsp"
2167 prores_encoder_select="fdctdsp"
2168 qcelp_decoder_select="lsp"
2169 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2170 ra_144_encoder_select="audio_frame_queue lpc"
2171 ralf_decoder_select="golomb"
2172 rscc_decoder_deps="zlib"
2173 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2174 rv10_encoder_select="h263_encoder"
2175 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2176 rv20_encoder_select="h263_encoder"
2177 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2178 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2179 screenpresso_decoder_deps="zlib"
2180 sipr_decoder_select="lsp"
2181 sp5x_decoder_select="mjpeg_decoder"
2182 svq1_decoder_select="hpeldsp"
2183 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2184 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2185 svq3_decoder_suggest="zlib"
2186 tak_decoder_select="audiodsp"
2187 tdsc_decoder_deps="zlib"
2188 tdsc_decoder_select="mjpeg_decoder"
2189 theora_decoder_select="vp3_decoder"
2190 thp_decoder_select="mjpeg_decoder"
2191 tiff_decoder_suggest="zlib"
2192 tiff_encoder_suggest="zlib"
2193 truehd_decoder_select="mlp_decoder"
2194 truemotion2_decoder_select="bswapdsp"
2195 truespeech_decoder_select="bswapdsp"
2196 tscc_decoder_deps="zlib"
2197 txd_decoder_select="texturedsp"
2198 twinvq_decoder_select="mdct lsp sinewin"
2199 utvideo_decoder_select="bswapdsp huffyuvdsp"
2200 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2201 vble_decoder_select="huffyuvdsp"
2202 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2203 vc1image_decoder_select="vc1_decoder"
2204 vorbis_decoder_select="mdct"
2205 vorbis_encoder_select="mdct"
2206 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2207 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2208 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2209 vp6a_decoder_select="vp6_decoder"
2210 vp6f_decoder_select="vp6_decoder"
2211 vp7_decoder_select="h264pred videodsp vp8dsp"
2212 vp8_decoder_select="h264pred videodsp vp8dsp"
2213 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2214 webp_decoder_select="vp8_decoder"
2215 wmapro_decoder_select="mdct sinewin wma_freqs"
2216 wmav1_decoder_select="mdct sinewin wma_freqs"
2217 wmav1_encoder_select="mdct sinewin wma_freqs"
2218 wmav2_decoder_select="mdct sinewin wma_freqs"
2219 wmav2_encoder_select="mdct sinewin wma_freqs"
2220 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2221 wmv1_decoder_select="h263_decoder"
2222 wmv1_encoder_select="h263_encoder"
2223 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2224 wmv2_encoder_select="h263_encoder wmv2dsp"
2225 wmv3_decoder_select="vc1_decoder"
2226 wmv3image_decoder_select="wmv3_decoder"
2227 zerocodec_decoder_deps="zlib"
2228 zlib_decoder_deps="zlib"
2229 zlib_encoder_deps="zlib"
2230 zmbv_decoder_deps="zlib"
2231 zmbv_encoder_deps="zlib"
2232
2233 # hardware accelerators
2234 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2235 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2236 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2237 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2238
2239 h263_vaapi_hwaccel_deps="vaapi"
2240 h263_vaapi_hwaccel_select="h263_decoder"
2241 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2242 h264_cuvid_hwaccel_select="h264_decoder"
2243 h264_d3d11va_hwaccel_deps="d3d11va"
2244 h264_d3d11va_hwaccel_select="h264_decoder"
2245 h264_d3d11va2_hwaccel_deps="d3d11va"
2246 h264_d3d11va2_hwaccel_select="h264_decoder"
2247 h264_dxva2_hwaccel_deps="dxva2"
2248 h264_dxva2_hwaccel_select="h264_decoder"
2249 h264_vaapi_hwaccel_deps="vaapi"
2250 h264_vaapi_hwaccel_select="h264_decoder"
2251 h264_vda_hwaccel_deps="vda"
2252 h264_vda_hwaccel_select="h264_decoder"
2253 h264_vda_old_hwaccel_deps="vda"
2254 h264_vda_old_hwaccel_select="h264_decoder"
2255 h264_vdpau_hwaccel_deps="vdpau"
2256 h264_vdpau_hwaccel_select="h264_decoder"
2257 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2258 hevc_cuvid_hwaccel_select="hevc_decoder"
2259 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2260 hevc_d3d11va_hwaccel_select="hevc_decoder"
2261 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2262 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2263 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2264 hevc_dxva2_hwaccel_select="hevc_decoder"
2265 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2266 hevc_vaapi_hwaccel_select="hevc_decoder"
2267 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2268 hevc_vdpau_hwaccel_select="hevc_decoder"
2269 mpeg1_vdpau_hwaccel_deps="vdpau"
2270 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2271 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2272 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2273 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2274 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2275 mpeg2_dxva2_hwaccel_deps="dxva2"
2276 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2277 mpeg2_vaapi_hwaccel_deps="vaapi"
2278 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2279 mpeg2_vdpau_hwaccel_deps="vdpau"
2280 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2281 mpeg4_vaapi_hwaccel_deps="vaapi"
2282 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2283 mpeg4_vdpau_hwaccel_deps="vdpau"
2284 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2285 vc1_d3d11va_hwaccel_deps="d3d11va"
2286 vc1_d3d11va_hwaccel_select="vc1_decoder"
2287 vc1_d3d11va2_hwaccel_deps="d3d11va"
2288 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2289 vc1_dxva2_hwaccel_deps="dxva2"
2290 vc1_dxva2_hwaccel_select="vc1_decoder"
2291 vc1_vaapi_hwaccel_deps="vaapi"
2292 vc1_vaapi_hwaccel_select="vc1_decoder"
2293 vc1_vdpau_hwaccel_deps="vdpau"
2294 vc1_vdpau_hwaccel_select="vc1_decoder"
2295 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2296 vp8_vaapi_hwaccel_select="vp8_decoder"
2297 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2298 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2299 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2300 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2301 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2302
2303 # hardware-accelerated codecs
2304 amf_deps_any="libdl LoadLibrary"
2305 nvenc_deps_any="libdl LoadLibrary"
2306 omx_deps="libdl pthreads"
2307 omx_rpi_select="omx"
2308 qsv_deps="libmfx"
2309 qsvdec_select="qsv"
2310 qsvenc_select="qsv"
2311 qsvvpp_select="qsv"
2312 vaapi_encode_deps="vaapi"
2313
2314 hwupload_cuda_filter_deps="cuda"
2315 scale_npp_filter_deps="cuda libnpp"
2316
2317 h264_amf_encoder_deps="amf"
2318 h264_mmal_decoder_deps="mmal"
2319 h264_nvenc_encoder_deps="nvenc"
2320 h264_omx_encoder_deps="omx"
2321 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2322 h264_qsv_encoder_select="qsvenc"
2323 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2324 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2325 hevc_amf_encoder_deps="amf"
2326 hevc_nvenc_encoder_deps="nvenc"
2327 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2328 hevc_qsv_encoder_select="hevcparse qsvenc"
2329 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2330 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2331 mjpeg_qsv_encoder_deps="libmfx"
2332 mjpeg_qsv_encoder_select="qsvenc"
2333 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2334 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2335 mpeg2_mmal_decoder_deps="mmal"
2336 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2337 mpeg2_qsv_encoder_select="qsvenc"
2338 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2339 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2340 mpeg4_omx_encoder_deps="omx"
2341 vc1_mmal_decoder_deps="mmal"
2342 vc1_qsv_decoder_select="qsvdec vc1_parser"
2343 vp8_qsv_decoder_select="qsvdec vp8_parser"
2344 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2345 vp8_vaapi_encoder_select="vaapi_encode"
2346 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2347 vp9_vaapi_encoder_select="vaapi_encode"
2348
2349 nvenc_h264_encoder_select="h264_nvenc_encoder"
2350 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2351
2352 # parsers
2353 aac_parser_select="adts_header"
2354 h264_parser_select="golomb h264dsp h264parse"
2355 hevc_parser_select="hevcparse"
2356 mpegaudio_parser_select="mpegaudioheader"
2357 mpegvideo_parser_select="mpegvideo"
2358 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2359 vc1_parser_select="vc1dsp"
2360
2361 # bitstream_filters
2362 aac_adtstoasc_bsf_select="adts_header"
2363 h264_metadata_bsf_select="cbs_h264"
2364 h264_redundant_pps_bsf_select="cbs_h264"
2365 hevc_metadata_bsf_select="cbs_h265"
2366 mjpeg2jpeg_bsf_select="jpegtables"
2367 mpeg2_metadata_bsf_select="cbs_mpeg2"
2368 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2369
2370 # external libraries
2371 avisynth_deps="LoadLibrary"
2372 avxsynth_deps="libdl"
2373 avisynth_demuxer_deps_any="avisynth avxsynth"
2374 avisynth_demuxer_select="riffdec"
2375 libaom_av1_decoder_deps="libaom"
2376 libaom_av1_encoder_deps="libaom"
2377 libdav1d_decoder_deps="libdav1d"
2378 libdcadec_decoder_deps="libdcadec"
2379 libfaac_encoder_deps="libfaac"
2380 libfaac_encoder_select="audio_frame_queue"
2381 libfdk_aac_decoder_deps="libfdk_aac"
2382 libfdk_aac_encoder_deps="libfdk_aac"
2383 libfdk_aac_encoder_select="audio_frame_queue"
2384 libgsm_decoder_deps="libgsm"
2385 libgsm_encoder_deps="libgsm"
2386 libgsm_ms_decoder_deps="libgsm"
2387 libgsm_ms_encoder_deps="libgsm"
2388 libilbc_decoder_deps="libilbc"
2389 libilbc_encoder_deps="libilbc"
2390 libkvazaar_encoder_deps="libkvazaar"
2391 libmp3lame_encoder_deps="libmp3lame"
2392 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2393 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2394 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2395 libopencore_amrnb_encoder_select="audio_frame_queue"
2396 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2397 libopenh264_decoder_deps="libopenh264"
2398 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2399 libopenh264_encoder_deps="libopenh264"
2400 libopenjpeg_decoder_deps="libopenjpeg"
2401 libopenjpeg_encoder_deps="libopenjpeg"
2402 libopus_decoder_deps="libopus"
2403 libopus_encoder_deps="libopus"
2404 libopus_encoder_select="audio_frame_queue"
2405 libschroedinger_decoder_deps="libschroedinger"
2406 libschroedinger_encoder_deps="libschroedinger"
2407 libspeex_decoder_deps="libspeex"
2408 libspeex_encoder_deps="libspeex"
2409 libspeex_encoder_select="audio_frame_queue"
2410 libtheora_encoder_deps="libtheora"
2411 libtwolame_encoder_deps="libtwolame"
2412 libvo_aacenc_encoder_deps="libvo_aacenc"
2413 libvo_aacenc_encoder_select="audio_frame_queue"
2414 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2415 libvorbis_encoder_deps="libvorbis"
2416 libvorbis_encoder_select="audio_frame_queue"
2417 libvpx_vp8_decoder_deps="libvpx"
2418 libvpx_vp8_encoder_deps="libvpx"
2419 libvpx_vp9_decoder_deps="libvpx"
2420 libvpx_vp9_encoder_deps="libvpx"
2421 libwavpack_encoder_deps="libwavpack"
2422 libwavpack_encoder_select="audio_frame_queue"
2423 libwebp_encoder_deps="libwebp"
2424 libx262_encoder_deps="libx262"
2425 libx264_encoder_deps="libx264"
2426 libx265_encoder_deps="libx265"
2427 libxavs_encoder_deps="libxavs"
2428 libxvid_encoder_deps="libxvid mkstemp"
2429
2430 # demuxers / muxers
2431 ac3_demuxer_select="ac3_parser"
2432 asf_demuxer_select="riffdec"
2433 asf_muxer_select="riffenc"
2434 asf_stream_muxer_select="asf_muxer"
2435 avi_demuxer_select="iso_media riffdec"
2436 avi_muxer_select="riffenc"
2437 caf_demuxer_select="iso_media riffdec"
2438 dash_muxer_select="mp4_muxer"
2439 dirac_demuxer_select="dirac_parser"
2440 dv_demuxer_select="dvprofile"
2441 dv_muxer_select="dvprofile"
2442 dxa_demuxer_select="riffdec"
2443 eac3_demuxer_select="ac3_parser"
2444 f4v_muxer_select="mov_muxer"
2445 flac_demuxer_select="flac_parser"
2446 hds_muxer_select="flv_muxer"
2447 hls_muxer_select="mpegts_muxer"
2448 ipod_muxer_select="mov_muxer"
2449 ismv_muxer_select="mov_muxer"
2450 matroska_audio_muxer_select="matroska_muxer"
2451 matroska_demuxer_select="iso_media riffdec"
2452 matroska_demuxer_suggest="bzlib lzo zlib"
2453 matroska_muxer_select="iso_media riffenc"
2454 mmf_muxer_select="riffenc"
2455 mov_demuxer_select="iso_media riffdec"
2456 mov_demuxer_suggest="zlib"
2457 mov_muxer_select="iso_media riffenc rtpenc_chain"
2458 mp3_demuxer_select="mpegaudio_parser"
2459 mp3_muxer_select="mpegaudioheader"
2460 mp4_muxer_select="mov_muxer"
2461 mpegts_demuxer_select="iso_media"
2462 mpegts_muxer_select="adts_muxer latm_muxer"
2463 mpegtsraw_demuxer_select="mpegts_demuxer"
2464 mxf_d10_muxer_select="mxf_muxer"
2465 nut_muxer_select="riffenc"
2466 nuv_demuxer_select="riffdec"
2467 oga_muxer_select="ogg_muxer"
2468 ogg_demuxer_select="dirac_parse"
2469 opus_muxer_select="ogg_muxer"
2470 psp_muxer_select="mov_muxer"
2471 rtp_demuxer_select="sdp_demuxer"
2472 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2473 rtsp_demuxer_select="http_protocol rtpdec"
2474 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2475 sap_demuxer_select="sdp_demuxer"
2476 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2477 sdp_demuxer_select="rtpdec"
2478 smoothstreaming_muxer_select="ismv_muxer"
2479 spdif_demuxer_select="adts_header"
2480 spdif_muxer_select="adts_header"
2481 spx_muxer_select="ogg_muxer"
2482 swf_demuxer_suggest="zlib"
2483 tak_demuxer_select="tak_parser"
2484 tg2_muxer_select="mov_muxer"
2485 tgp_muxer_select="mov_muxer"
2486 w64_demuxer_select="wav_demuxer"
2487 wav_demuxer_select="riffdec"
2488 wav_muxer_select="riffenc"
2489 webm_muxer_select="iso_media riffenc"
2490 wtv_demuxer_select="mpegts_demuxer riffdec"
2491 xmv_demuxer_select="riffdec"
2492 xwma_demuxer_select="riffdec"
2493
2494 # indevs
2495 alsa_indev_deps="alsa"
2496 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2497 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2498 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2499 fbdev_indev_deps="linux_fb_h"
2500 jack_indev_deps="libjack"
2501 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2502 libcdio_indev_deps="libcdio"
2503 libdc1394_indev_deps="libdc1394"
2504 oss_indev_deps_any="sys_soundcard_h"
2505 pulse_indev_deps="libpulse"
2506 sndio_indev_deps="sndio"
2507 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2508 vfwcap_indev_deps="vfw32 vfwcap_defines"
2509 xcbgrab_indev_deps="libxcb libxcb_shape"
2510 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2511
2512 # protocols
2513 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2514 ffrtmpcrypt_protocol_deps_any="gmp mbedtls openssl"
2515 ffrtmpcrypt_protocol_select="tcp_protocol"
2516 ffrtmphttp_protocol_conflict="librtmp_protocol"
2517 ffrtmphttp_protocol_select="http_protocol"
2518 gopher_protocol_select="network"
2519 http_protocol_select="tcp_protocol"
2520 http_protocol_suggest="zlib"
2521 httpproxy_protocol_select="tcp_protocol"
2522 httpproxy_protocol_suggest="zlib"
2523 https_protocol_select="tls_protocol"
2524 https_protocol_suggest="zlib"
2525 icecast_protocol_select="http_protocol"
2526 mmsh_protocol_select="http_protocol"
2527 mmst_protocol_select="network"
2528 rtmp_protocol_conflict="librtmp_protocol"
2529 rtmp_protocol_select="tcp_protocol"
2530 rtmp_protocol_suggest="zlib"
2531 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2532 rtmpe_protocol_suggest="zlib"
2533 rtmps_protocol_conflict="librtmp_protocol"
2534 rtmps_protocol_select="tls_protocol"
2535 rtmps_protocol_suggest="zlib"
2536 rtmpt_protocol_select="ffrtmphttp_protocol"
2537 rtmpt_protocol_suggest="zlib"
2538 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2539 rtmpte_protocol_suggest="zlib"
2540 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2541 rtmpts_protocol_suggest="zlib"
2542 rtp_protocol_select="udp_protocol"
2543 sctp_protocol_deps="struct_sctp_event_subscribe"
2544 sctp_protocol_select="network"
2545 srtp_protocol_select="rtp_protocol srtp"
2546 tcp_protocol_select="network"
2547 tls_protocol_deps_any="gnutls mbedtls openssl"
2548 tls_protocol_select="tcp_protocol"
2549 udp_protocol_select="network"
2550 unix_protocol_deps="sys_un_h"
2551 unix_protocol_select="network"
2552
2553 # external library protocols
2554 librtmp_protocol_deps="librtmp"
2555 librtmpe_protocol_deps="librtmp"
2556 librtmps_protocol_deps="librtmp"
2557 librtmpt_protocol_deps="librtmp"
2558 librtmpte_protocol_deps="librtmp"
2559 libsrt_protocol_deps="libsrt"
2560 libsrt_protocol_select="network"
2561
2562 # filters
2563 asyncts_filter_deps="avresample"
2564 blackframe_filter_deps="gpl"
2565 boxblur_filter_deps="gpl"
2566 bs2b_filter_deps="libbs2b"
2567 cropdetect_filter_deps="gpl"
2568 deinterlace_qsv_filter_deps="libmfx"
2569 deinterlace_vaapi_filter_deps="vaapi"
2570 delogo_filter_deps="gpl"
2571 drawtext_filter_deps="libfreetype"
2572 drawtext_filter_suggest="libfontconfig"
2573 frei0r_filter_deps="frei0r libdl"
2574 frei0r_src_filter_deps="frei0r libdl"
2575 hdcd_filter_deps="libhdcd"
2576 hqdn3d_filter_deps="gpl"
2577 interlace_filter_deps="gpl"
2578 movie_filter_deps="avcodec avformat"
2579 ocv_filter_deps="libopencv"
2580 overlay_qsv_filter_deps="libmfx"
2581 overlay_qsv_filter_select="qsvvpp"
2582 resample_filter_deps="avresample"
2583 scale_filter_deps="swscale"
2584 scale_qsv_filter_deps="libmfx"
2585 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2586 vpp_qsv_filter_deps="libmfx"
2587 vpp_qsv_filter_select="qsvvpp"
2588
2589 # examples
2590 decode_audio_example_deps="avcodec avutil"
2591 decode_video_example_deps="avcodec avutil"
2592 encode_audio_example_deps="avcodec avutil"
2593 encode_video_example_deps="avcodec avutil"
2594 filter_audio_example_deps="avfilter avutil"
2595 metadata_example_deps="avformat avutil"
2596 output_example_deps="avcodec avformat avresample avutil swscale"
2597 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2598 transcode_aac_example_deps="avcodec avformat avresample"
2599
2600 # EXTRALIBS_LIST
2601 cpu_init_extralibs="pthreads_extralibs"
2602 cws2fws_extralibs="zlib_extralibs"
2603
2604 # libraries, in linking order
2605 avcodec_deps="avutil"
2606 avcodec_select="null_bsf"
2607 avdevice_deps="avformat avcodec avutil"
2608 avfilter_deps="avutil"
2609 avformat_deps="avcodec avutil"
2610 avformat_suggest="network"
2611 avresample_deps="avutil"
2612 swscale_deps="avutil"
2613
2614 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2615 avdevice_extralibs="libm_extralibs"
2616 avformat_extralibs="libm_extralibs"
2617 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2618 avresample_extralibs="libm_extralibs"
2619 avutil_extralibs="bcrypt_extralibs clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs"
2620 swscale_extralibs="libm_extralibs"
2621
2622 # programs
2623 avconv_deps="avcodec avfilter avformat avresample swscale"
2624 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2625                fps_filter null_filter resample_filter scale_filter
2626                trim_filter"
2627 avconv_suggest="psapi shell32"
2628 avplay_deps="avcodec avfilter avformat avresample sdl"
2629 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2630 avplay_suggest="shell32"
2631 avprobe_deps="avcodec avformat"
2632 avprobe_suggest="shell32"
2633
2634 # documentation
2635 pod2man_deps="doc"
2636 texi2html_deps="doc"
2637
2638 # default parameters
2639
2640 logfile="avbuild/config.log"
2641
2642 # installation paths
2643 prefix_default="/usr/local"
2644 bindir_default='${prefix}/bin'
2645 datadir_default='${prefix}/share/avconv'
2646 docdir_default='${prefix}/share/doc/libav'
2647 incdir_default='${prefix}/include'
2648 libdir_default='${prefix}/lib'
2649 mandir_default='${prefix}/share/man'
2650 shlibdir_default="$libdir_default"
2651
2652 # toolchain
2653 ar_default="ar"
2654 cc_default="gcc"
2655 host_cc_default="gcc"
2656 x86asmexe_default="nasm"
2657 ln_s="ln -s -f"
2658 nm_default="nm -g"
2659 pkg_config_default=pkg-config
2660 ranlib="ranlib"
2661 strip="strip"
2662 version_script='--version-script'
2663 objformat="elf32"
2664
2665 # machine
2666 arch_default=$(uname -m)
2667 cpu="generic"
2668 intrinsics="none"
2669
2670 # OS
2671 target_os_default=$(tolower $(uname -s))
2672 host_os=$target_os_default
2673
2674 # configurable options
2675 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2676
2677 enable asm
2678 enable debug
2679 enable doc
2680 enable faan faandct faanidct
2681 enable optimizations
2682 enable safe_bitstream_reader
2683 enable static
2684 enable swscale_alpha
2685 enable valgrind_backtrace
2686
2687 # By default, enable only those hwaccels that have no external dependencies.
2688 enable d3d11va dxva2 vda vdpau
2689
2690 # internal components are enabled by default
2691 enable $EXTRALIBS_LIST
2692
2693 # Avoid external, non-system, libraries getting enabled by dependency resolution
2694 disable $EXTERNAL_LIBRARY_LIST
2695
2696 # build settings
2697 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2698 LIBPREF="lib"
2699 LIBSUF=".a"
2700 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2701 SLIBPREF="lib"
2702 SLIBSUF=".so"
2703 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2704 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2705 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2706 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2707 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2708 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2709 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2710
2711 asflags_filter=echo
2712 cflags_filter=echo
2713 ldflags_filter=echo
2714
2715 AS_C='-c'
2716 AS_O='-o $@'
2717 CC_C='-c'
2718 CC_E='-E -o $@'
2719 CC_O='-o $@'
2720 OBJCC_C='-c'
2721 OBJCC_E='-E -o $@'
2722 OBJCC_O='-o $@'
2723 X86ASM_O='-o $@'
2724 LD_O='-o $@'
2725 LD_LIB='-l%'
2726 LD_PATH='-L'
2727 HOSTCC_C='-c'
2728 HOSTCC_E='-E -o $@'
2729 HOSTCC_O='-o $@'
2730 HOSTLD_O='-o $@'
2731
2732 host_extralibs='-lm'
2733 host_cflags_filter=echo
2734 host_ldflags_filter=echo
2735
2736 target_path='$(CURDIR)'
2737
2738 # since the object filename is not given with the -MM flag, the compiler
2739 # is only able to print the basename, and we must add the path ourselves
2740 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2741 DEPFLAGS='-MM'
2742
2743 mkdir -p avbuild
2744
2745 # find source path
2746 if test -f configure; then
2747     source_path=.
2748 else
2749     source_path=$(cd $(dirname "$0"); pwd)
2750     echo "$source_path" | grep -q '[[:blank:]]' &&
2751         die "Out of tree builds are impossible with whitespace in source path."
2752     test -e "$source_path/config.h" &&
2753         die "Out of tree builds are impossible with config.h in source dir."
2754 fi
2755
2756 for v in "$@"; do
2757     r=${v#*=}
2758     l=${v%"$r"}
2759     r=$(sh_quote "$r")
2760     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2761 done
2762
2763 find_things(){
2764     thing=$1
2765     pattern=$2
2766     file=$source_path/$3
2767     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2768 }
2769
2770 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2771 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2772 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2773 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2774 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2775 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2776 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2777
2778 find_things_extern(){
2779     thing=$1
2780     pattern=$2
2781     file=$source_path/$3
2782     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2783 }
2784
2785 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2786 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
2787 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2788
2789 AVCODEC_COMPONENTS_LIST="
2790     $BSF_LIST
2791     $DECODER_LIST
2792     $ENCODER_LIST
2793     $HWACCEL_LIST
2794     $PARSER_LIST
2795 "
2796
2797 AVDEVICE_COMPONENTS_LIST="
2798     $INDEV_LIST
2799 "
2800
2801 AVFILTER_COMPONENTS_LIST="
2802     $FILTER_LIST
2803 "
2804
2805 AVFORMAT_COMPONENTS_LIST="
2806     $DEMUXER_LIST
2807     $MUXER_LIST
2808     $PROTOCOL_LIST
2809 "
2810
2811 ALL_COMPONENTS="
2812     $AVCODEC_COMPONENTS_LIST
2813     $AVDEVICE_COMPONENTS_LIST
2814     $AVFILTER_COMPONENTS_LIST
2815     $AVFORMAT_COMPONENTS_LIST
2816 "
2817
2818 for n in $COMPONENT_LIST; do
2819     v=$(toupper ${n%s})_LIST
2820     eval enable \$$v
2821     eval ${n}_if_any="\$$v"
2822 done
2823
2824 enable $ARCH_EXT_LIST
2825
2826 die_unknown(){
2827     echo "Unknown option \"$1\"."
2828     echo "See $0 --help for available options."
2829     exit 1
2830 }
2831
2832 print_3_columns() {
2833     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2834 }
2835
2836 show_list() {
2837     suffix=_$1
2838     shift
2839     echo $* | sed s/$suffix//g | print_3_columns
2840     exit 0
2841 }
2842
2843 for opt do
2844     optval="${opt#*=}"
2845     case "$opt" in
2846         --extra-ldflags=*)
2847             add_ldflags $optval
2848         ;;
2849         --extra-ldexeflags=*)
2850             add_ldexeflags $optval
2851         ;;
2852         --extra-ldsoflags=*)
2853             add_ldsoflags $optval
2854         ;;
2855         --extra-libs=*)
2856             add_extralibs $optval
2857         ;;
2858         --disable-devices)
2859             disable $INDEV_LIST
2860         ;;
2861         --enable-debug=*)
2862             debuglevel="$optval"
2863         ;;
2864         --disable-programs)
2865             disable $PROGRAM_LIST
2866         ;;
2867         --disable-everything)
2868             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2869         ;;
2870         --disable-all)
2871             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2872             disable $LIBRARY_LIST $PROGRAM_LIST doc
2873         ;;
2874         --enable-*=*|--disable-*=*)
2875             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2876             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2877             eval list=\$$(toupper $thing)_LIST
2878             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2879             $action $(filter "$name" $list)
2880         ;;
2881         --enable-yasm|--disable-yasm)
2882             warn "The ${opt} option is only provided for compatibility and will be\n"\
2883                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2884             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2885         ;;
2886         --enable-?*|--disable-?*)
2887             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2888             if is_in $option $COMPONENT_LIST; then
2889                 test $action = disable && action=unset
2890                 eval $action \$$(toupper ${option%s})_LIST
2891             elif is_in $option $CMDLINE_SELECT; then
2892                 $action $option
2893             else
2894                 die_unknown $opt
2895             fi
2896         ;;
2897         --list-*)
2898             NAME="${opt#--list-}"
2899             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2900             NAME=${NAME%s}
2901             eval show_list $NAME \$$(toupper $NAME)_LIST
2902         ;;
2903         --help|-h) show_help
2904         ;;
2905         --quiet|-q) quiet=yes
2906         ;;
2907         *)
2908             optname="${opt%%=*}"
2909             optname="${optname#--}"
2910             optname=$(echo "$optname" | sed 's/-/_/g')
2911             if is_in $optname $CMDLINE_SET; then
2912                 eval $optname='$optval'
2913             elif is_in $optname $CMDLINE_APPEND; then
2914                 append $optname "$optval"
2915             else
2916                 die_unknown $opt
2917             fi
2918         ;;
2919     esac
2920 done
2921
2922 for e in $env; do
2923     eval "export $e"
2924 done
2925
2926 disabled logging && logfile=/dev/null
2927
2928 # command line configuration sanity checks
2929
2930 # we need to build at least one lib type
2931 if ! enabled_any static shared; then
2932     cat <<EOF
2933 At least one library type must be built.
2934 Specify --enable-static to build the static libraries or --enable-shared to
2935 build the shared libraries as well. To only build the shared libraries specify
2936 --disable-static in addition to --enable-shared.
2937 EOF
2938     exit 1
2939 fi
2940
2941 # Die early if licensing-related configure options are incompatible.
2942 die_license_disabled() {
2943     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2944 }
2945
2946 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2947 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2948 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2949
2950 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2951
2952 if enabled nonfree; then
2953     license="nonfree and unredistributable"
2954 elif enabled gplv3; then
2955     license="GPL version 3 or later"
2956 elif enabled lgplv3; then
2957     license="LGPL version 3 or later"
2958 elif enabled gpl; then
2959     license="GPL version 2 or later"
2960 else
2961     license="LGPL version 2.1 or later"
2962 fi
2963
2964 enabled_all gnutls openssl &&
2965     die "GnuTLS and OpenSSL must not be enabled at the same time."
2966
2967 enabled_all gnutls mbedtls &&
2968     die "GnuTLS and mbedTLS must not be enabled at the same time."
2969
2970 enabled_all openssl mbedtls &&
2971     die "OpenSSL and mbedTLS must not be enabled at the same time."
2972
2973 # Disable all the library-specific components if the library itself
2974 # is disabled, see AVCODEC_LIST and following _LIST variables.
2975
2976 disable_components(){
2977     disabled ${1} && disable $(
2978         eval components="\$$(toupper ${1})_COMPONENTS"
2979         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2980     )
2981 }
2982
2983 map 'disable_components $v' $LIBRARY_LIST
2984
2985 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2986 set >> $logfile
2987
2988 case "$toolchain" in
2989     *-asan)
2990         cc_default="${toolchain%-asan}"
2991         add_cflags  -fsanitize=address
2992         add_ldflags -fsanitize=address
2993     ;;
2994     *-msan)
2995         cc_default="${toolchain%-msan}"
2996         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2997         add_ldflags -fsanitize=memory
2998     ;;
2999     *-tsan)
3000         cc_default="${toolchain%-tsan}"
3001         add_cflags  -fsanitize=thread -fPIE
3002         add_ldflags -fsanitize=thread -pie
3003         case "$toolchain" in
3004             gcc-tsan)
3005                 add_cflags  -fPIC
3006                 add_ldflags -fPIC
3007                 ;;
3008         esac
3009     ;;
3010     *-usan)
3011         cc_default="${toolchain%-usan}"
3012         add_cflags  -fsanitize=undefined
3013         add_ldflags -fsanitize=undefined
3014         case "$toolchain" in
3015             clang-usan)
3016                 add_cflags -O1
3017                 ;;
3018         esac
3019     ;;
3020     valgrind-*)
3021         target_exec_default="valgrind"
3022         case "$toolchain" in
3023             valgrind-massif)
3024                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
3025                 ;;
3026             valgrind-memcheck)
3027                 target_exec_args="--track-origins=yes --leak-check=full"
3028                 ;;
3029         esac
3030     ;;
3031     msvc)
3032         # Check whether the current MSVC version needs the C99 converter.
3033         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3034         # support enough of C99 to build libav. Default to the new
3035         # behaviour if the regexp was unable to match anything, since this
3036         # successfully parses the version number of existing supported
3037         # versions that require the converter (MSVC 2010 and 2012).
3038         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3039         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3040             cc_default="cl"
3041         else
3042             cc_default="c99wrap cl"
3043         fi
3044         ld_default="$source_path/compat/windows/mslink"
3045         nm_default="dumpbin -symbols"
3046         ar_default="lib"
3047         case "$arch" in
3048         aarch64|arm64)
3049             as_default="armasm64"
3050             ;;
3051         arm*)
3052             as_default="armasm"
3053             ;;
3054         esac
3055         target_os_default="win32"
3056         # Use a relative path for TMPDIR. This makes sure all the
3057         # ffconf temp files are written with a relative path, avoiding
3058         # issues with msys/win32 path conversion for MSVC parameters
3059         # such as -Fo<file> or -out:<file>.
3060         TMPDIR=.
3061     ;;
3062     icl)
3063         cc_default="icl"
3064         ld_default="xilink"
3065         nm_default="dumpbin -symbols"
3066         ar_default="xilib"
3067         target_os_default="win32"
3068         TMPDIR=.
3069     ;;
3070     gcov)
3071         add_cflags  -fprofile-arcs -ftest-coverage
3072         add_ldflags -fprofile-arcs -ftest-coverage
3073     ;;
3074     llvm-cov)
3075         add_cflags -fprofile-arcs -ftest-coverage
3076         add_ldflags --coverage
3077     ;;
3078     hardened)
3079         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3080         add_cflags   -fno-strict-overflow -fstack-protector-all
3081         add_ldflags  -Wl,-z,relro -Wl,-z,now
3082     ;;
3083     ?*)
3084         die "Unknown toolchain $toolchain"
3085     ;;
3086 esac
3087
3088 if test -n "$cross_prefix"; then
3089     test -n "$arch" && test -n "$target_os" ||
3090         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3091     enable cross_compile
3092 fi
3093
3094 ar_default="${cross_prefix}${ar_default}"
3095 cc_default="${cross_prefix}${cc_default}"
3096 objcc_default="${cross_prefix}${objcc_default}"
3097 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3098 nm_default="${cross_prefix}${nm_default}"
3099 pkg_config_default="${cross_prefix}${pkg_config_default}"
3100 ranlib="${cross_prefix}${ranlib}"
3101 strip="${cross_prefix}${strip}"
3102
3103 sysinclude_default="${sysroot}/usr/include"
3104
3105 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3106 enabled cross_compile || host_cc_default=$cc
3107 set_default host_cc
3108
3109 if ! $pkg_config --version >/dev/null 2>&1; then
3110     warn "$pkg_config not found, library detection may fail."
3111     pkg_config=false
3112 fi
3113
3114 exesuf() {
3115     case $1 in
3116         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3117     esac
3118 }
3119
3120 EXESUF=$(exesuf $target_os)
3121 HOSTEXESUF=$(exesuf $host_os)
3122
3123 # set temporary file name
3124 : ${TMPDIR:=$TEMPDIR}
3125 : ${TMPDIR:=$TMP}
3126 : ${TMPDIR:=/tmp}
3127
3128 if ! test_cmd mktemp -u XXXXXX; then
3129     # simple replacement for missing mktemp
3130     # NOT SAFE FOR GENERAL USE
3131     mktemp(){
3132         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3133         echo "$tmpname"
3134         mkdir "$tmpname"
3135     }
3136 fi
3137
3138 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3139     die "Unable to create temporary directory in $TMPDIR."
3140
3141 tmpfile(){
3142     tmp="${AVTMPDIR}/test"$2
3143     (set -C; exec > $tmp) 2> /dev/null ||
3144         die "Unable to create temporary file in $AVTMPDIR."
3145     eval $1=$tmp
3146 }
3147
3148 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3149 trap 'exit 2' INT
3150
3151 tmpfile TMPASM .asm
3152 tmpfile TMPC   .c
3153 tmpfile TMPE   $EXESUF
3154 tmpfile TMPH   .h
3155 tmpfile TMPO   .o
3156 tmpfile TMPS   .S
3157 tmpfile TMPSH  .sh
3158 tmpfile TMPV   .ver
3159
3160 unset -f mktemp
3161
3162 chmod +x $TMPE
3163
3164 # make sure we can execute files in $TMPDIR
3165 cat > $TMPSH 2>> $logfile <<EOF
3166 #! /bin/sh
3167 EOF
3168 chmod +x $TMPSH >> $logfile 2>&1
3169 if ! $TMPSH >> $logfile 2>&1; then
3170     cat <<EOF
3171 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3172 variable to another directory and make sure that it is not mounted noexec.
3173 EOF
3174     die "Sanity test failed."
3175 fi
3176
3177 armasm_flags(){
3178     for flag; do
3179         case $flag in
3180             # Filter out MSVC cl.exe options from cflags that shouldn't
3181             # be passed to gas-preprocessor
3182             -M[TD]*)                                            ;;
3183             *)                  echo $flag                      ;;
3184         esac
3185    done
3186 }
3187
3188 cparser_flags(){
3189     for flag; do
3190         case $flag in
3191             -Wno-switch)             echo -Wno-switch-enum ;;
3192             -Wno-format-zero-length) ;;
3193             -Wdisabled-optimization) ;;
3194             -Wno-pointer-sign)       echo -Wno-other ;;
3195             *)                       echo $flag ;;
3196         esac
3197     done
3198 }
3199
3200 msvc_common_flags(){
3201     for flag; do
3202         case $flag in
3203             # In addition to specifying certain flags under the compiler
3204             # specific filters, they must be specified here as well or else the
3205             # generic catch all at the bottom will print the original flag.
3206             -Wall)                ;;
3207             -Wextra)              ;;
3208             -std=c99)             ;;
3209             # Common flags
3210             -fomit-frame-pointer) ;;
3211             -g)                   echo -Z7 ;;
3212             -fno-math-errno)      ;;
3213             -fno-common)          ;;
3214             -fno-signed-zeros)    ;;
3215             -fPIC)                ;;
3216             -mthumb)              ;;
3217             -march=*)             ;;
3218             -lz)                  echo zlib.lib ;;
3219             -lx264)               echo libx264.lib ;;
3220             -l*)                  echo ${flag#-l}.lib ;;
3221             -L*)                  echo -libpath:${flag#-L} ;;
3222             *)                    echo $flag ;;
3223         esac
3224     done
3225 }
3226
3227 msvc_flags(){
3228     msvc_common_flags "$@"
3229     for flag; do
3230         case $flag in
3231             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3232                                        -wd4554 ;;
3233             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3234                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3235                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3236                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3237         esac
3238     done
3239 }
3240
3241 icl_flags(){
3242     msvc_common_flags "$@"
3243     for flag; do
3244         case $flag in
3245             # Despite what Intel's documentation says -Wall, which is supported
3246             # on Windows, does enable remarks so disable them here.
3247             -Wall)                echo $flag -Qdiag-disable:remark ;;
3248             -std=c99)             echo -Qstd=c99 ;;
3249         esac
3250     done
3251 }
3252
3253 suncc_flags(){
3254     for flag; do
3255         case $flag in
3256             -march=*|-mcpu=*)
3257                 case "${flag#*=}" in
3258                     native)                   echo -xtarget=native       ;;
3259                     v9|niagara)               echo -xarch=sparc          ;;
3260                     ultrasparc)               echo -xarch=sparcvis       ;;
3261                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3262                     i586|pentium)             echo -xchip=pentium        ;;
3263                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3264                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3265                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3266                     pentium4*)          echo -xtarget=pentium4           ;;
3267                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3268                     *-sse3)             echo -xarch=sse3                 ;;
3269                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3270                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3271                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3272                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3273                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3274                     k8|opteron|athlon64|athlon-fx)
3275                                                echo -xarch=sse2a         ;;
3276                     athlon*)                   echo -xarch=pentium_proa  ;;
3277                 esac
3278                 ;;
3279             -std=c99)             echo -xc99              ;;
3280             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3281             -fPIC)                echo -KPIC -xcode=pic32 ;;
3282             -W*,*)                echo $flag              ;;
3283             -f*-*|-W*|-mimpure-text)                      ;;
3284             -shared)              echo -G                 ;;
3285             *)                    echo $flag              ;;
3286         esac
3287     done
3288 }
3289
3290 probe_cc(){
3291     pfx=$1
3292     _cc=$2
3293
3294     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3295     unset _ld_o _ldflags _ld_lib _ld_path
3296     unset _depflags _DEPCMD _DEPFLAGS
3297     _flags_filter=echo
3298
3299     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3300         _type=llvm_gcc
3301         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3302         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3303         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3304         _cflags_speed='-O3'
3305         _cflags_size='-Os'
3306     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3307         _type=gcc
3308         gcc_version=$($_cc --version | head -n1)
3309         gcc_basever=$($_cc -dumpversion)
3310         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3311         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3312         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3313         if ! $_cc -dumpversion | grep -q '^2\.'; then
3314             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3315         fi
3316         _cflags_speed='-O3'
3317         _cflags_size='-Os'
3318     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3319         _type=icc
3320         _ident=$($_cc --version | head -n1)
3321         _depflags='-MMD'
3322         _cflags_speed='-O3'
3323         _cflags_size='-Os'
3324         _cflags_noopt='-O1'
3325     elif $_cc -v 2>&1 | grep -q xlc; then
3326         _type=xlc
3327         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3328         _cflags_speed='-O5'
3329         _cflags_size='-O5 -qcompact'
3330     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3331         test -d "$sysroot" || die "No valid sysroot specified."
3332         _type=armcc
3333         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3334         armcc_conf="$PWD/armcc.conf"
3335         $_cc --arm_linux_configure                 \
3336              --arm_linux_config_file="$armcc_conf" \
3337              --configure_sysroot="$sysroot"        \
3338              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3339              die "Error creating armcc configuration file."
3340         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3341         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3342         as_default="${cross_prefix}gcc"
3343         _depflags='-MMD'
3344         _cflags_speed='-O3'
3345         _cflags_size='-Os'
3346     elif $_cc -v 2>&1 | grep -q clang; then
3347         _type=clang
3348         _ident=$($_cc --version 2>/dev/null | head -n1)
3349         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3350         _cflags_speed='-O3'
3351         _cflags_size='-Os'
3352     elif $_cc -V 2>&1 | grep -q Sun; then
3353         _type=suncc
3354         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3355         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3356         _DEPFLAGS='-xM1 -xc99'
3357         _ldflags='-std=c99'
3358         _cflags_speed='-O5'
3359         _cflags_size='-O5 -xspace'
3360         _flags_filter=suncc_flags
3361     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3362         _type=pathscale
3363         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3364         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3365         _cflags_speed='-O2'
3366         _cflags_size='-Os'
3367         _flags_filter='filter_out -Wdisabled-optimization'
3368     elif $_cc -v 2>&1 | grep -q Open64; then
3369         _type=open64
3370         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3371         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3372         _cflags_speed='-O2'
3373         _cflags_size='-Os'
3374         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3375     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3376         _type=armasm
3377         _ident=$($_cc | head -n1)
3378         # 4509: "This form of conditional instruction is deprecated"
3379         _flags="-nologo -ignore 4509"
3380         _flags_filter=armasm_flags
3381     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3382         _type=msvc
3383         _ident=$($_cc 2>&1 | head -n1)
3384         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3385         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3386         _cflags_speed="-O2"
3387         _cflags_size="-O1"
3388         _cflags_noopt="-O1"
3389         if $_cc -nologo- 2>&1 | grep -q Linker; then
3390             _ld_o='-out:$@'
3391         else
3392             _ld_o='-Fe$@'
3393         fi
3394         _cc_o='-Fo$@'
3395         _cc_e='-P -Fi$@'
3396         _flags_filter=msvc_flags
3397         _ld_lib='lib%.a'
3398         _ld_path='-libpath:'
3399         _flags='-nologo'
3400     elif $_cc 2>&1 | grep -q Intel; then
3401         _type=icl
3402         _ident=$($_cc 2>&1 | head -n1)
3403         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3404         # Not only is O3 broken on 13.x+ but it is slower on all previous
3405         # versions (tested) as well.
3406         _cflags_speed="-O2"
3407         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3408         if $_cc 2>&1 | grep -q Linker; then
3409             _ld_o='-out:$@'
3410         else
3411             _ld_o='-Fe$@'
3412         fi
3413         _cc_o='-Fo$@'
3414         _cc_e='-P'
3415         _flags_filter=icl_flags
3416         _ld_lib='lib%.a'
3417         _ld_path='-libpath:'
3418         # -Qdiag-error to make icl error when seeing certain unknown arguments
3419         _flags='-nologo -Qdiag-error:4044,10157'
3420         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3421         # with MSVC which enables it by default.
3422         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3423     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3424         # lld can emulate multiple different linkers; in ms link.exe mode,
3425         # the -? parameter gives the help output which contains an identifyable
3426         # string, while it gives an error in other modes.
3427         _type=lld-link
3428         # The link.exe mode doesn't have a switch for getting the version,
3429         # but we can force it back to gnu mode and get the version from there.
3430         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3431         _ld_o='-out:$@'
3432         _flags_filter=msvc_flags
3433         _ld_lib='lib%.a'
3434         _ld_path='-libpath:'
3435     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3436         _type=cparser
3437         _ident=$($_cc --version | head -n1)
3438         _depflags='-MMD'
3439         _cflags_speed='-O4'
3440         _cflags_size='-O2'
3441         _flags_filter=cparser_flags
3442     fi
3443
3444     eval ${pfx}_type=\$_type
3445     eval ${pfx}_ident=\$_ident
3446 }
3447
3448 set_ccvars(){
3449     eval ${1}_C=\${_cc_c-\${${1}_C}}
3450     eval ${1}_E=\${_cc_e-\${${1}_E}}
3451     eval ${1}_O=\${_cc_o-\${${1}_O}}
3452
3453     if [ -n "$_depflags" ]; then
3454         eval ${1}_DEPFLAGS=\$_depflags
3455     else
3456         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3457         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3458         eval DEP${1}FLAGS=\$_flags
3459     fi
3460 }
3461
3462 probe_cc cc "$cc"
3463 cflags_filter=$_flags_filter
3464 cflags_speed=$_cflags_speed
3465 cflags_size=$_cflags_size
3466 cflags_noopt=$_cflags_noopt
3467 add_cflags $_flags $_cflags
3468 cc_ldflags=$_ldflags
3469 set_ccvars CC
3470
3471 probe_cc hostcc "$host_cc"
3472 host_cflags_filter=$_flags_filter
3473 host_cflags_speed=$_cflags_speed
3474 add_host_cflags  $_flags $_cflags
3475 set_ccvars HOSTCC
3476
3477 test -n "$cc_type" && enable $cc_type ||
3478     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3479
3480 : ${as_default:=$cc}
3481 : ${objcc_default:=$cc}
3482 : ${dep_cc_default:=$cc}
3483 : ${ld_default:=$cc}
3484 : ${host_ld_default:=$host_cc}
3485 set_default ar as objcc dep_cc ld host_ld
3486
3487 probe_cc as "$as"
3488 asflags_filter=$_flags_filter
3489 add_asflags $_flags $_cflags
3490 set_ccvars AS
3491
3492 probe_cc objcc "$objcc"
3493 objcflags_filter=$_flags_filter
3494 add_objcflags $_flags $_cflags
3495 set_ccvars OBJC
3496
3497 probe_cc ld "$ld"
3498 ldflags_filter=$_flags_filter
3499 add_ldflags $_flags $_ldflags
3500 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3501 LD_O=${_ld_o-$LD_O}
3502 LD_LIB=${_ld_lib-$LD_LIB}
3503 LD_PATH=${_ld_path-$LD_PATH}
3504
3505 probe_cc hostld "$host_ld"
3506 host_ldflags_filter=$_flags_filter
3507 add_host_ldflags $_flags $_ldflags
3508 HOSTLD_O=${_ld_o-$HOSTLD_O}
3509
3510 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3511     probe_cc depcc "$dep_cc"
3512     CCDEP=${_DEPCMD:-$DEPCMD}
3513     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3514     DEPCCFLAGS=$_flags
3515 fi
3516
3517 if $ar 2>&1 | grep -q Microsoft; then
3518     arflags="-nologo"
3519     ar_o='-out:$@'
3520 else
3521     arflags="rc"
3522     ar_o='$@'
3523 fi
3524
3525 add_cflags $extra_cflags
3526 add_objcflags $extra_objcflags
3527 add_asflags $extra_cflags
3528
3529 if test -n "$sysroot"; then
3530     case "$cc_type" in
3531         gcc|llvm_gcc|clang)
3532             add_cppflags --sysroot="$sysroot"
3533             add_ldflags --sysroot="$sysroot"
3534         ;;
3535     esac
3536 fi
3537
3538 if test "$cpu" = host; then
3539     enabled cross_compile &&
3540         die "--cpu=host makes no sense when cross-compiling."
3541
3542     case "$cc_type" in
3543         gcc|llvm_gcc)
3544             check_native(){
3545                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3546                 sed -n "/cc1.*$1=/{
3547                             s/.*$1=\\([^ ]*\\).*/\\1/
3548                             p
3549                             q
3550                         }" $TMPE
3551             }
3552             cpu=$(check_native -march || check_native -mcpu)
3553         ;;
3554     esac
3555
3556     test "${cpu:-host}" = host &&
3557         die "--cpu=host not supported with compiler $cc"
3558 fi
3559
3560 # Deal with common $arch aliases
3561 case "$arch" in
3562     aarch64|arm64)
3563         arch="aarch64"
3564     ;;
3565     arm*)
3566         arch="arm"
3567     ;;
3568     mips*|IP*)
3569         case "$arch" in
3570         *el)
3571             add_cppflags -EL
3572             add_ldflags -EL
3573         ;;
3574         *eb)
3575             add_cppflags -EB
3576             add_ldflags -EB
3577         ;;
3578         esac
3579         arch="mips"
3580     ;;
3581     parisc*|hppa*)
3582         arch="parisc"
3583     ;;
3584     "Power Macintosh"|ppc*|powerpc*)
3585         arch="ppc"
3586     ;;
3587     s390|s390x)
3588         arch="s390"
3589     ;;
3590     sh4|sh)
3591         arch="sh4"
3592     ;;
3593     sun4u|sparc*)
3594         arch="sparc"
3595     ;;
3596     tilegx|tile-gx)
3597         arch="tilegx"
3598     ;;
3599     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3600         arch="x86"
3601     ;;
3602 esac
3603
3604 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3605 enable $arch
3606
3607 # Add processor-specific flags
3608 if enabled aarch64; then
3609
3610     case $cpu in
3611         armv*)
3612             cpuflags="-march=$cpu"
3613         ;;
3614         *)
3615             cpuflags="-mcpu=$cpu"
3616         ;;
3617     esac
3618
3619 elif enabled alpha; then
3620
3621     cpuflags="-mcpu=$cpu"
3622
3623 elif enabled arm; then
3624
3625     check_arm_arch() {
3626         test_cpp_condition stddef.h \
3627             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3628             $cpuflags
3629     }
3630
3631     probe_arm_arch() {
3632         if   check_arm_arch 4;        then echo armv4
3633         elif check_arm_arch 4T;       then echo armv4t
3634         elif check_arm_arch 5;        then echo armv5
3635         elif check_arm_arch 5E;       then echo armv5e
3636         elif check_arm_arch 5T;       then echo armv5t
3637         elif check_arm_arch 5TE;      then echo armv5te
3638         elif check_arm_arch 5TEJ;     then echo armv5te
3639         elif check_arm_arch 6;        then echo armv6
3640         elif check_arm_arch 6J;       then echo armv6j
3641         elif check_arm_arch 6K;       then echo armv6k
3642         elif check_arm_arch 6Z;       then echo armv6z
3643         elif check_arm_arch 6ZK;      then echo armv6zk
3644         elif check_arm_arch 6T2;      then echo armv6t2
3645         elif check_arm_arch 7;        then echo armv7
3646         elif check_arm_arch 7A  7_A;  then echo armv7-a
3647         elif check_arm_arch 7S;       then echo armv7-a
3648         elif check_arm_arch 7R  7_R;  then echo armv7-r
3649         elif check_arm_arch 7M  7_M;  then echo armv7-m
3650         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3651         elif check_arm_arch 8A  8_A;  then echo armv8-a
3652         fi
3653     }
3654
3655     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3656
3657     case $cpu in
3658         armv*)
3659             cpuflags="-march=$cpu"
3660             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3661         ;;
3662         *)
3663             cpuflags="-mcpu=$cpu"
3664             case $cpu in
3665                 cortex-a*)                               subarch=armv7a  ;;
3666                 cortex-r*)                               subarch=armv7r  ;;
3667                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3668                 arm11*)                                  subarch=armv6   ;;
3669                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3670                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3671                 *)                             subarch=$(probe_arm_arch) ;;
3672             esac
3673         ;;
3674     esac
3675
3676     case "$subarch" in
3677         armv5t*)    enable fast_clz                ;;
3678         armv[6-8]*) enable fast_clz fast_unaligned ;;
3679     esac
3680
3681 elif enabled avr32; then
3682
3683     case $cpu in
3684         ap7[02]0[0-2])
3685             subarch="avr32_ap"
3686             cpuflags="-mpart=$cpu"
3687         ;;
3688         ap)
3689             subarch="avr32_ap"
3690             cpuflags="-march=$cpu"
3691         ;;
3692         uc3[ab]*)
3693             subarch="avr32_uc"
3694             cpuflags="-mcpu=$cpu"
3695         ;;
3696         uc)
3697             subarch="avr32_uc"
3698             cpuflags="-march=$cpu"
3699         ;;
3700     esac
3701
3702 elif enabled bfin; then
3703
3704     cpuflags="-mcpu=$cpu"
3705
3706 elif enabled mips; then
3707
3708     cpuflags="-march=$cpu"
3709
3710 elif enabled ppc; then
3711
3712     disable ldbrx
3713
3714     case $(tolower $cpu) in
3715         601|ppc601|powerpc601)
3716             cpuflags="-mcpu=601"
3717             disable altivec
3718         ;;
3719         603*|ppc603*|powerpc603*)
3720             cpuflags="-mcpu=603"
3721             disable altivec
3722         ;;
3723         604*|ppc604*|powerpc604*)
3724             cpuflags="-mcpu=604"
3725             disable altivec
3726         ;;
3727         g3|75*|ppc75*|powerpc75*)
3728             cpuflags="-mcpu=750"
3729             disable altivec
3730         ;;
3731         g4|745*|ppc745*|powerpc745*)
3732             cpuflags="-mcpu=7450"
3733             disable vsx
3734         ;;
3735         74*|ppc74*|powerpc74*)
3736             cpuflags="-mcpu=7400"
3737             disable vsx
3738         ;;
3739         g5|970|ppc970|powerpc970)
3740             cpuflags="-mcpu=970"
3741             disable vsx
3742         ;;
3743         power[3-6]*)
3744             cpuflags="-mcpu=$cpu"
3745             disable vsx
3746         ;;
3747         power[7-8]*)
3748             cpuflags="-mcpu=$cpu"
3749             enable ldbrx
3750         ;;
3751         cell)
3752             cpuflags="-mcpu=cell"
3753             enable ldbrx
3754             disable vsx
3755         ;;
3756         e500mc)
3757             cpuflags="-mcpu=e500mc"
3758             disable altivec
3759         ;;
3760         e500v2)
3761             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3762             disable altivec
3763             disable dcbzl
3764         ;;
3765         e500)
3766             cpuflags="-mcpu=8540 -mhard-float"
3767             disable altivec
3768             disable dcbzl
3769         ;;
3770     esac
3771
3772 elif enabled sparc; then
3773
3774     case $cpu in
3775         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3776             cpuflags="-mcpu=$cpu"
3777         ;;
3778         ultrasparc*|niagara[234])
3779             cpuflags="-mcpu=$cpu"
3780         ;;
3781     esac
3782
3783 elif enabled x86; then
3784
3785     case $cpu in
3786         i[345]86|pentium)
3787             cpuflags="-march=$cpu"
3788             disable i686
3789             disable mmx
3790         ;;
3791         # targets that do NOT support nopl and conditional mov (cmov)
3792         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3793             cpuflags="-march=$cpu"
3794             disable i686
3795         ;;
3796         # targets that do support nopl and conditional mov (cmov)
3797         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3798             cpuflags="-march=$cpu"
3799             enable i686
3800             enable fast_cmov
3801         ;;
3802         # targets that do support conditional mov but on which it's slow
3803         pentium4|pentium4m|prescott|nocona)
3804             cpuflags="-march=$cpu"
3805             enable i686
3806             disable fast_cmov
3807         ;;
3808     esac
3809
3810 fi
3811
3812 if [ "$cpu" != generic ]; then
3813     add_cflags  $cpuflags
3814     add_asflags $cpuflags
3815     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3816 fi
3817
3818 # compiler sanity check
3819 test_exec <<EOF
3820 int main(void){ return 0; }
3821 EOF
3822 if test "$?" != 0; then
3823     echo "$cc is unable to create an executable file."
3824     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3825         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3826         echo "Only do this if you know what cross compiling means."
3827     fi
3828     die "C compiler test failed."
3829 fi
3830
3831 add_cppflags -D_ISOC99_SOURCE
3832
3833 # some compilers silently accept -std=c11, so we also need to check that the
3834 # version macro is defined properly
3835 test_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3836     add_cflags -std=c11 ||
3837     check_cflags -std=c99
3838
3839 check_cppflags -D_FILE_OFFSET_BITS=64
3840 check_cppflags -D_LARGEFILE_SOURCE
3841
3842 add_host_cppflags -D_ISOC99_SOURCE
3843 check_host_cflags -std=c99
3844 check_host_cflags -Wall
3845 check_host_cflags $host_cflags_speed
3846
3847 check_64bit(){
3848     arch32=$1
3849     arch64=$2
3850     expr=${3:-'sizeof(void *) > 4'}
3851     test_code cc "" "int test[2*($expr) - 1]" &&
3852         subarch=$arch64 || subarch=$arch32
3853     enable $subarch
3854 }
3855
3856 case "$arch" in
3857     aarch64|alpha|ia64)
3858         enabled shared && enable_weak pic
3859     ;;
3860     mips)
3861         check_64bit mips mips64 '_MIPS_SIM > 1'
3862         enabled shared && enable_weak pic
3863     ;;
3864     parisc)
3865         check_64bit parisc parisc64
3866         enabled shared && enable_weak pic
3867     ;;
3868     ppc)
3869         check_64bit ppc ppc64
3870         enabled shared && enable_weak pic
3871     ;;
3872     s390)
3873         check_64bit s390 s390x
3874         enabled shared && enable_weak pic
3875     ;;
3876     sparc)
3877         check_64bit sparc sparc64
3878         enabled shared && enable_weak pic
3879     ;;
3880     x86)
3881         check_64bit x86_32 x86_64
3882         if enabled x86_64; then
3883             enabled shared && enable_weak pic
3884             objformat=elf64
3885         fi
3886     ;;
3887 esac
3888
3889 # OS specific
3890 case $target_os in
3891     aix)
3892         SHFLAGS=-shared
3893         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3894         enabled shared && add_ldflags -Wl,-brtl
3895         arflags='-Xany -r -c'
3896         ;;
3897     android)
3898         disable symver
3899         enable section_data_rel_ro
3900         SLIB_INSTALL_NAME='$(SLIBNAME)'
3901         SLIB_INSTALL_LINKS=
3902         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3903         ;;
3904     haiku)
3905         prefix_default="/boot/common"
3906         network_extralibs="-lnetwork"
3907         host_extralibs=
3908         ;;
3909     sunos)
3910         SHFLAGS='-shared -Wl,-h,$$(@F)'
3911         enabled x86 && append SHFLAGS -mimpure-text
3912         network_extralibs="-lsocket -lnsl"
3913         # When using suncc to build, the Solaris linker will mark
3914         # an executable with each instruction set encountered by
3915         # the Solaris assembler.  As our libraries contain their own
3916         # guards for processor-specific code, instead suppress
3917         # generation of the HWCAPS ELF section on Solaris x86 only.
3918         enabled_all suncc x86 &&
3919             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3920             add_ldflags -Wl,-M,mapfile
3921         nm_default='nm -P -g'
3922         version_script='-M'
3923         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3924         ;;
3925     netbsd)
3926         disable symver
3927         oss_indev_extralibs="-lossaudio"
3928         ;;
3929     openbsd|bitrig)
3930         disable symver
3931         SHFLAGS='-shared'
3932         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3933         SLIB_INSTALL_LINKS=
3934         oss_indev_extralibs="-lossaudio"
3935         ;;
3936     dragonfly)
3937         disable symver
3938         ;;
3939     freebsd)
3940         ;;
3941     bsd/os)
3942         add_extralibs -lpoll -lgnugetopt
3943         ;;
3944     darwin)
3945         enabled ppc && add_asflags -force_cpusubtype_ALL
3946         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3947         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3948         add_ldflags -Wl,-dynamic,-search_paths_first
3949         check_cflags -Werror=partial-availability
3950         SLIBSUF=".dylib"
3951         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3952         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3953         enabled x86_64 && objformat="macho64" || objformat="macho32"
3954         enabled_any pic shared ||
3955             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3956         check_headers dispatch/dispatch.h &&
3957             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3958         if test -n "$sysroot"; then
3959             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3960             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3961         fi
3962         ;;
3963     msys*)
3964         die "Native MSYS builds are discouraged, please use the MINGW environment."
3965         ;;
3966     mingw32*|mingw64*)
3967         target_os=mingw32
3968         LIBTARGET=i386
3969         if enabled x86_64; then
3970             LIBTARGET="i386:x86-64"
3971         elif enabled arm; then
3972             LIBTARGET="arm"
3973         elif enabled aarch64; then
3974             LIBTARGET="arm64"
3975         fi
3976         if enabled shared; then
3977             # Cannot build both shared and static libs when using dllimport.
3978             disable static
3979         fi
3980         check_ldflags -Wl,--nxcompat
3981         check_ldflags -Wl,--dynamicbase
3982         shlibdir_default="$bindir_default"
3983         SLIBPREF=""
3984         SLIBSUF=".dll"
3985         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3986         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3987         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3988         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3989         SLIB_INSTALL_LINKS=
3990         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3991         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3992         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3993         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3994         enabled x86_64 && objformat="win64" || objformat="win32"
3995         dlltool="${cross_prefix}dlltool"
3996         ranlib=:
3997         enable dos_paths
3998         ;;
3999     win32|win64)
4000         disable symver
4001         if enabled shared; then
4002             # Link to the import library instead of the normal static library
4003             # for shared libs.
4004             LD_LIB='%.lib'
4005             # Cannot build both shared and static libs with MSVC or icl.
4006             disable static
4007         fi
4008         shlibdir_default="$bindir_default"
4009         SLIBPREF=""
4010         SLIBSUF=".dll"
4011         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4012         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4013         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4014         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4015         SLIB_INSTALL_LINKS=
4016         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4017         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4018         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4019         enabled x86_64 && objformat="win64" || objformat="win32"
4020         ranlib=:
4021         enable dos_paths
4022         ;;
4023     cygwin*)
4024         target_os=cygwin
4025         shlibdir_default="$bindir_default"
4026         SLIBPREF="cyg"
4027         SLIBSUF=".dll"
4028         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4029         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4030         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4031         SLIB_INSTALL_LINKS=
4032         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4033         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4034         enabled x86_64 && objformat="win64" || objformat="win32"
4035         enable dos_paths
4036         ;;
4037     *-dos|freedos|opendos)
4038         network_extralibs="-lsocket"
4039         objformat="coff"
4040         enable dos_paths
4041         add_cppflags -U__STRICT_ANSI__
4042         ;;
4043     linux)
4044         enable section_data_rel_ro
4045         ;;
4046     irix*)
4047         target_os=irix
4048         ranlib="echo ignoring ranlib"
4049         ;;
4050     os/2*)
4051         ln_s="cp -f"
4052         objformat="aout"
4053         add_cppflags -D_GNU_SOURCE
4054         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4055         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4056         LIBSUF="_s.a"
4057         SLIBPREF=""
4058         SLIBSUF=".dll"
4059         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4060         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4061         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4062             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4063             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4064             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4065             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4066         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4067             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4068         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4069         enable dos_paths
4070         ;;
4071     gnu/kfreebsd)
4072         add_cppflags -D_BSD_SOURCE
4073         ;;
4074     gnu)
4075         ;;
4076     qnx)
4077         add_cppflags -D_QNX_SOURCE
4078         network_extralibs="-lsocket"
4079         ;;
4080     symbian)
4081         SLIBSUF=".dll"
4082         enable dos_paths
4083         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4084         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4085         add_ldflags -Wl,--target1-abs,--no-undefined \
4086                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4087                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4088         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4089                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4090                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4091         ;;
4092     minix)
4093         ;;
4094     none)
4095         ;;
4096     *)
4097         die "Unknown OS '$target_os'."
4098         ;;
4099 esac
4100
4101 # determine libc flavour
4102
4103 probe_libc(){
4104     pfx=$1
4105     pfx_no_=${pfx%_}
4106     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4107     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4108         eval ${pfx}libc_type=uclibc
4109         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4110     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4111         eval ${pfx}libc_type=glibc
4112         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4113     # MinGW headers can be installed on Cygwin, so check for newlib first.
4114     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4115         eval ${pfx}libc_type=newlib
4116         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4117         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
4118             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
4119     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4120     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4121         eval ${pfx}libc_type=mingw64
4122         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4123         eval test \$${pfx_no_}cc_type = "gcc" &&
4124             add_${pfx}cppflags -D__printf__=__gnu_printf__
4125         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
4126             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
4127         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4128     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4129          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4130         eval ${pfx}libc_type=mingw32
4131         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4132             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4133             die "ERROR: MinGW32 runtime version must be >= 3.15."
4134         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4135         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4136             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4137         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
4138             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
4139         eval test \$${pfx_no_}cc_type = "gcc" &&
4140             add_${pfx}cppflags -D__printf__=__gnu_printf__
4141         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4142     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4143         eval ${pfx}libc_type=msvcrt
4144         if test_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4145             if [ "$pfx" = host_ ]; then
4146                 add_host_cppflags -Dsnprintf=_snprintf
4147             else
4148                 add_compat strtod.o strtod=avpriv_strtod
4149                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4150                                              _snprintf=avpriv_snprintf  \
4151                                              vsnprintf=avpriv_vsnprintf
4152             fi
4153         fi
4154         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4155         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4156         # 0x601 by default unless something else is set by the user.
4157         # This can easily lead to us detecting functions only present
4158         # in such new versions and producing binaries requiring windows 7.0.
4159         # Therefore explicitly set the default to Vista unless the user has
4160         # set something else on the command line.
4161         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4162         # family. For these cases, configure is free to use any functions
4163         # found in the SDK headers by default. (Alternatively, we could force
4164         # _WIN32_WINNT to 0x0602 in that case.)
4165         test_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4166             { test_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0600; }
4167 #ifdef WINAPI_FAMILY
4168 #include <winapifamily.h>
4169 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4170 #error not desktop
4171 #endif
4172 #endif
4173 EOF
4174         if [ "$pfx" = "" ]; then
4175             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4176         fi
4177     elif test_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4178         eval ${pfx}libc_type=klibc
4179     elif test_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4180         eval ${pfx}libc_type=bionic
4181     elif test_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4182         eval ${pfx}libc_type=solaris
4183         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4184     else
4185         eval ${pfx}libc_type=default
4186         add_${pfx}cppflags -D_DEFAULT_SOURCE
4187     fi
4188     eval test -n "\${${pfx}libc_type}" && enable ${pfx}libc_${libc_type}
4189 }
4190
4191 probe_libc
4192 probe_libc host_
4193
4194 # hacks for compiler/libc/os combinations
4195
4196 case $libc_type in
4197     bionic)
4198         add_compat strtod.o strtod=avpriv_strtod
4199         ;;
4200 esac
4201
4202 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4203     add_cppflags '-I\$(SRC_PATH)/compat/float'
4204
4205 test_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4206
4207 set_default $PATHS_LIST
4208 set_default nm
4209
4210 disabled optimizations || check_cflags -fomit-frame-pointer
4211
4212 enable_weak_pic() {
4213     disabled pic && return
4214     enable pic
4215     add_cppflags -DPIC
4216     case "$target_os" in
4217     mingw*|cygwin*|win*)
4218         ;;
4219     *)
4220         add_cflags -fPIC
4221         add_asflags -fPIC
4222         ;;
4223     esac
4224 }
4225
4226 enabled pic && enable_weak_pic
4227
4228 test_cc <<EOF || die "Symbol mangling check failed."
4229 int ff_extern;
4230 EOF
4231 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4232 extern_prefix=${sym%%ff_extern*}
4233
4234 ! disabled inline_asm && check_inline_asm inline_asm '"" ::'
4235
4236 for restrict_keyword in restrict __restrict__ __restrict ""; do
4237     test_code cc "" "char * $restrict_keyword p" && break
4238 done
4239
4240 check_cc pragma_deprecated "" '_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")'
4241
4242 # The global variable ensures the bits appear unchanged in the object file.
4243 test_cc <<EOF || die "endian test failed"
4244 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4245 EOF
4246 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4247
4248 check_gas() {
4249     log "check_gas using '$as' as AS"
4250     # :vararg is used on aarch64, arm and ppc altivec
4251     check_as vararg "
4252 .macro m n, y:vararg=0
4253 \n: .int \y
4254 .endm
4255 m x" || return 1
4256     # .altmacro is only used in arm asm
4257     ! enabled arm || check_as gnu_as ".altmacro"
4258 }
4259
4260 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4261     nogas=:
4262     enabled_any arm aarch64 && nogas=die
4263     enabled_all ppc altivec && nogas=warn
4264     as_noop=-v
4265
4266     case $as_type in
4267         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4268         gcc)  gaspp_as_type=gas ;;
4269         *)    gaspp_as_type=$as_type ;;
4270     esac
4271
4272     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4273
4274     test_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4275         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4276
4277     if ! check_gas ; then
4278         as=${gas:=$as}
4279         check_gas || \
4280             $nogas "GNU assembler not found, install/update gas-preprocessor"
4281     fi
4282
4283     check_as as_func ".func test
4284                       .endfunc"
4285 fi
4286
4287 check_inline_asm inline_asm_labels '"1:\n"'
4288
4289 if enabled aarch64; then
4290     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4291     # internal assembler in clang 3.3 does not support this instruction
4292     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4293     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4294
4295     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4296
4297 elif enabled alpha; then
4298
4299     check_cflags -mieee
4300
4301 elif enabled arm; then
4302
4303     enabled msvc && check_cpp_condition thumb stddef.h "defined _M_ARMT"
4304     test_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4305     enabled thumb && check_cflags -mthumb || check_cflags -marm
4306
4307     if check_cpp_condition vfp_args stddef.h "defined __ARM_PCS_VFP"; then
4308         :
4309     elif check_cpp_condition vfp_args stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4310         :
4311     elif ! test_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4312         case "${cross_prefix:-$cc}" in
4313             *hardfloat*) enable vfp_args; fpabi=vfp ;;
4314             *) check_ld vfp_args <<EOF && fpabi=vfp || fpabi=soft ;;
4315 __asm__ (".eabi_attribute 28, 1");
4316 int main(void) { return 0; }
4317 EOF
4318         esac
4319         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4320     fi
4321
4322     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4323     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4324     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4325     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4326     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4327     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4328
4329     [ $target_os = linux ] || [ $target_os = android ] ||
4330         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4331             $ARCH_EXT_LIST_ARM
4332
4333     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4334
4335     check_as as_arch_directive ".arch armv7-a"
4336     check_as as_fpu_directive  ".fpu neon"
4337
4338     # llvm's integrated assembler supports .object_arch from llvm 3.5
4339     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
4340         check_as as_object_arch ".object_arch armv4"
4341
4342     # MS armasm fails to assemble our PIC constructs
4343     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4344
4345 elif enabled mips; then
4346
4347     # make sure that only one instruction set is enabled
4348     disable $ARCH_EXT_LIST_MIPS
4349
4350     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4351
4352     if enabled mips64; then
4353         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4354             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4355                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4356     else
4357         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4358             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4359                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4360     fi
4361
4362 elif enabled parisc; then
4363
4364     if enabled gcc; then
4365         case $($cc -dumpversion) in
4366             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4367         esac
4368     fi
4369
4370 elif enabled ppc; then
4371
4372     enable local_aligned_8 local_aligned_16 local_aligned_32
4373
4374     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4375     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4376     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4377     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4378
4379     if enabled altivec; then
4380         check_cflags -maltivec -mabi=altivec
4381
4382         # check if our compiler supports Motorola AltiVec C API
4383         check_cc altivec altivec.h "vector signed int v1 = (vector signed int) { 0 };
4384                                     vector signed int v2 = (vector signed int) { 1 };
4385                                     v1 = vec_add(v1, v2);"
4386
4387         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4388     fi
4389
4390     if enabled vsx; then
4391         check_cflags -mvsx &&
4392         check_cc vsx altivec.h "int v[4] = { 0 };
4393                                 vector signed int v1 = vec_vsx_ld(0, v);"
4394     fi
4395
4396     if enabled power8; then
4397         check_cpp_condition power8 altivec.h "defined(_ARCH_PWR8)"
4398     fi
4399
4400 elif enabled x86; then
4401
4402     check_builtin rdtsc    intrin.h   "__rdtsc()"
4403     check_builtin mm_empty mmintrin.h "_mm_empty()"
4404
4405     enable local_aligned_8 local_aligned_16 local_aligned_32
4406
4407     # check whether EBP is available on x86
4408     # As 'i' is stored on the stack, this program will crash
4409     # if the base pointer is used to access it because the
4410     # base pointer is cleared in the inline assembly code.
4411     check_exec_crash <<EOF && enable ebp_available
4412 volatile int i=0;
4413 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4414 return i;
4415 EOF
4416
4417     # check whether EBX is available on x86
4418     check_inline_asm ebx_available '""::"b"(0)' &&
4419         check_inline_asm ebx_available '"":::"%ebx"'
4420
4421     # check whether xmm clobbers are supported
4422     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4423
4424     # check whether binutils is new enough to compile SSSE3/MMXEXT
4425     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4426     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4427
4428     probe_x86asm(){
4429         x86asmexe_probe=$1
4430         if test_cmd $x86asmexe_probe -v; then
4431             x86asmexe=$x86asmexe_probe
4432             x86asm_type=nasm
4433             x86asm_debug="-g -F dwarf"
4434             X86ASMDEP=
4435             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
4436         elif test_cmd $x86asmexe_probe --version; then
4437             x86asmexe=$x86asmexe_probe
4438             x86asm_type=yasm
4439             x86asm_debug="-g dwarf2"
4440             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
4441             X86ASM_DEPFLAGS=
4442         fi
4443         check_x86asm x86asm "movbe ecx, [5]"
4444     }
4445
4446     if ! disabled_any asm mmx x86asm; then
4447         disable x86asm
4448         for program in $x86asmexe nasm yasm; do
4449             probe_x86asm $program && break
4450         done
4451         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
4452         X86ASMFLAGS="-f $objformat"
4453         enabled pic               && append X86ASMFLAGS "-DPIC"
4454         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
4455         case "$objformat" in
4456             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
4457         esac
4458
4459         check_x86asm avx2_external "vextracti128 xmm0, ymm0, 0"
4460         check_x86asm  xop_external "vpmacsdd xmm0, xmm1, xmm2, xmm3"
4461         check_x86asm fma3_external "vfmadd132ps ymm0, ymm1, ymm2"
4462         check_x86asm fma4_external "vfmaddps ymm0, ymm1, ymm2, ymm3"
4463         check_x86asm cpunop        "CPU amdnop"
4464     fi
4465
4466     case "$cpu" in
4467         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4468             disable fast_clz
4469         ;;
4470     esac
4471
4472 fi
4473
4474 check_cc intrinsics_neon arm_neon.h "int16x8_t test = vdupq_n_s16(0)"
4475
4476 check_ldflags -Wl,--as-needed
4477
4478 if ! disabled network; then
4479     check_func getaddrinfo $network_extralibs
4480     check_func inet_aton $network_extralibs
4481
4482     check_type netdb.h "struct addrinfo"
4483     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4484     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4485     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4486     check_type poll.h "struct pollfd"
4487     check_type netinet/sctp.h "struct sctp_event_subscribe"
4488     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4489     check_type netinet/in.h "struct sockaddr_in6"
4490     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4491     check_type "sys/types.h sys/socket.h" socklen_t
4492
4493     # Prefer arpa/inet.h over winsock2
4494     if check_headers arpa/inet.h ; then
4495         check_func closesocket
4496     elif check_headers winsock2.h ; then
4497         check_func_headers winsock2.h closesocket -lws2 &&
4498             network_extralibs="-lws2" ||
4499         { check_func_headers winsock2.h closesocket -lws2_32 &&
4500             network_extralibs="-lws2_32"; } || disable winsock2_h network
4501         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4502
4503         check_type ws2tcpip.h socklen_t
4504         check_type ws2tcpip.h "struct addrinfo"
4505         check_type ws2tcpip.h "struct group_source_req"
4506         check_type ws2tcpip.h "struct ip_mreq_source"
4507         check_type ws2tcpip.h "struct ipv6_mreq"
4508         check_type winsock2.h "struct pollfd"
4509         check_struct winsock2.h "struct sockaddr" sa_len
4510         check_type ws2tcpip.h "struct sockaddr_in6"
4511         check_type ws2tcpip.h "struct sockaddr_storage"
4512     else
4513         disable network
4514     fi
4515 fi
4516
4517 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4518 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4519 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4520 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4521
4522 case "$custom_allocator" in
4523     jemalloc)
4524         # jemalloc by default does not use a prefix
4525         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4526     ;;
4527     tcmalloc)
4528         require_pkg_config libtcmalloc libtcmalloc gperftools/tcmalloc.h tc_malloc
4529         malloc_prefix=tc_
4530     ;;
4531 esac
4532
4533 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4534 check_func  ${malloc_prefix}memalign            && enable memalign
4535 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4536
4537 test_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4538     { check_lib clock_gettime time.h clock_gettime ||
4539       check_lib clock_gettime time.h clock_gettime -lrt; }
4540
4541 check_func  fcntl
4542 check_func  gethrtime
4543 check_func  getopt
4544 check_func  getrusage
4545 check_func  gettimeofday
4546 check_func  isatty
4547 check_func  mkstemp
4548 check_func  mmap
4549 check_func  mprotect
4550 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4551 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4552 check_func  sched_getaffinity
4553 check_func  setrlimit
4554 check_func  strerror_r
4555 check_func  sysconf
4556 check_func  sysctl
4557 check_func  usleep
4558
4559 check_func_headers io.h setmode
4560 check_func_headers mach/mach_time.h mach_absolute_time
4561 check_func_headers stdlib.h getenv
4562 check_func_headers time.h gmtime_r
4563 check_func_headers time.h localtime_r
4564
4565 check_func_headers windows.h GetProcessAffinityMask
4566 check_func_headers windows.h GetProcessTimes
4567 check_func_headers windows.h GetSystemTimeAsFileTime
4568 check_func_headers windows.h LoadLibrary
4569 check_func_headers windows.h MapViewOfFile
4570 check_func_headers windows.h SetConsoleTextAttribute
4571 check_func_headers windows.h Sleep
4572 check_func_headers windows.h VirtualAlloc
4573
4574 check_headers direct.h
4575 check_headers dxgidebug.h
4576 check_headers dxva.h
4577 check_headers dxva2api.h
4578 check_headers io.h
4579 check_headers malloc.h
4580 check_headers poll.h
4581 check_headers sys/param.h
4582 check_headers sys/resource.h
4583 check_headers sys/select.h
4584 check_headers sys/time.h
4585 check_headers sys/un.h
4586 check_headers unistd.h
4587 check_headers valgrind/valgrind.h
4588 check_headers VideoDecodeAcceleration/VDADecoder.h
4589 check_headers windows.h
4590
4591 # it seems there are versions of clang in some distros that try to use the
4592 # gcc headers, which explodes for stdatomic
4593 # so we also check that atomics actually work here
4594 check_builtin stdatomic stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4595
4596 check_lib bcrypt   "windows.h bcrypt.h"   BCryptGenRandom      -lbcrypt &&
4597     check_cpp_condition bcrypt bcrypt.h "defined BCRYPT_RNG_ALGORITHM"
4598 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
4599 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4600 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4601
4602 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4603
4604 check_type "cuviddec.h" "CUVIDH264PICPARAMS"
4605 check_type "cuviddec.h" "CUVIDHEVCPICPARAMS"
4606 check_struct "cuviddec.h" "CUVIDDECODECREATEINFO" bitDepthMinus8
4607
4608 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4609 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4610 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4611
4612 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4613 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4614 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4615 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4616 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4617 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4618 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
4619 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
4620 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
4621
4622 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4623
4624 if ! disabled w32threads && ! enabled pthreads; then
4625     check_lib w32threads "windows.h process.h" _beginthreadex &&
4626         check_type "windows.h" CONDITION_VARIABLE
4627 fi
4628
4629 # check for some common methods of building with pthread support
4630 # do this before the optional library checks as some of them require pthreads
4631 if ! disabled pthreads && ! enabled w32threads; then
4632     if check_lib pthreads pthread.h pthread_join -pthread; then
4633         add_cflags -pthread
4634     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4635         add_cflags -pthreads
4636     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4637         :
4638     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4639         :
4640     elif check_func pthread_join; then
4641         enable pthreads
4642     fi
4643     enabled pthreads &&
4644         check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" $pthreads_extralibs
4645 fi
4646
4647 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4648 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4649
4650 # On some systems dynamic loading requires no extra linker flags
4651 check_lib libdl dlfcn.h dlopen || check_lib libdl dlfcn.h dlopen -ldl
4652
4653 check_lib libm math.h sin -lm
4654
4655 atan2f_args=2
4656 ldexpf_args=2
4657 powf_args=2
4658
4659 for func in $MATH_FUNCS; do
4660     eval check_mathfunc $func \${${func}_args:-1} $libm_extralibs
4661 done
4662
4663 # these are off by default, so fail if requested and not available
4664 enabled amf               && require_cpp_condition amf AMF/core/Version.h "(AMF_VERSION_MAJOR << 48 | AMF_VERSION_MINOR << 32 | AMF_VERSION_RELEASE << 16 | AMF_VERSION_BUILD_NUM) >= 0x0001000400040001"
4665 enabled avisynth          && require_headers avisynth/avisynth_c.h
4666 enabled avxsynth          && require_headers avxsynth/avxsynth_c.h
4667 enabled cuda              && require cuda cuda.h cuInit -lcuda
4668 enabled cuvid             && require cuvid cuviddec.h cuvidCreateDecoder -lnvcuvid
4669 enabled frei0r            && require_headers frei0r.h
4670 enabled gnutls            && require_pkg_config gnutls gnutls gnutls/gnutls.h gnutls_global_init &&
4671                              check_lib gmp gmp.h mpz_export -lgmp
4672 enabled libaom            && {
4673     enabled libaom_av1_decoder && require_pkg_config libaom_av1_decoder "aom >= 1.0.0" "aom/aom_decoder.h aom/aomdx.h" aom_codec_av1_dx
4674     enabled libaom_av1_encoder && {
4675         require_pkg_config libaom_av1_encoder "aom >= 1.0.0" "aom/aom_encoder.h aom/aomcx.h" aom_codec_av1_cx &&
4676             require_cpp_condition libaom_av1_encoder aom/aom_encoder.h "defined AOM_FRAME_IS_INTRAONLY";
4677     }
4678 }
4679 enabled libbs2b           && require_pkg_config libbs2b libbs2b bs2b.h bs2b_open
4680 enabled libdc1394         && require_pkg_config libdc1394 libdc1394-2 dc1394/dc1394.h dc1394_new
4681 enabled libdav1d          && require_pkg_config libdav1d "dav1d >= 0.1.0" dav1d/dav1d.h dav1d_version
4682 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4683 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4684 enabled libfdk_aac        && require_pkg_config libfdk_aac fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4685 enabled libfontconfig     && require_pkg_config libfontconfig fontconfig "fontconfig/fontconfig.h" FcInit
4686 enabled libfreetype       && require_pkg_config libfreetype freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4687 enabled libgsm            && require libgsm gsm.h gsm_create -lgsm
4688 enabled libhdcd           && require_pkg_config libhdcd libhdcd "hdcd/hdcd_simple.h" hdcd_new
4689 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4690 enabled libkvazaar        && require_pkg_config libkvazaar "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4691 enabled libmfx            && require_pkg_config libmfx libmfx "mfx/mfxvideo.h" MFXInit
4692 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4693 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4694 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4695 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4696 enabled libopencv         && require_pkg_config libopencv opencv opencv/cv.h cvCreateImageHeader
4697 enabled libopenh264       && require_pkg_config libopenh264 openh264 wels/codec_api.h WelsGetCodecVersion
4698 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4699                                require_pkg_config libopenjpeg libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4700 enabled libopus           && require_pkg_config libopus opus opus_multistream.h opus_multistream_decoder_create
4701 enabled libpulse          && require_pkg_config libpulse libpulse-simple pulse/simple.h pa_simple_new
4702 enabled librtmp           && require_pkg_config librtmp librtmp librtmp/rtmp.h RTMP_Socket
4703 enabled libschroedinger   && require_pkg_config libschroedinger schroedinger-1.0 schroedinger/schro.h schro_init
4704 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4705 enabled libspeex          && require_pkg_config libspeex speex speex/speex.h speex_decoder_init
4706 enabled libsrt            && require_pkg_config libsrt "srt >= 1.3.0" srt/srt.h srt_socket
4707 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4708 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4709 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4710 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4711 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4712 enabled libvpx            && require_pkg_config libvpx "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version &&
4713                              { enabled libvpx_vp8_decoder &&
4714                                    check_pkg_config libvpx_vp8_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx
4715                                enabled libvpx_vp8_encoder &&
4716                                    check_pkg_config libvpx_vp8_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx
4717                                enabled libvpx_vp9_decoder &&
4718                                    check_pkg_config libvpx_vp9_decoder vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx
4719                                enabled libvpx_vp9_encoder &&
4720                                    check_pkg_config libvpx_vp9_encoder vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx
4721                                disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder &&
4722                                    die "libvpx enabled but no supported decoders/encoders found"
4723                              }
4724 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4725 enabled libwebp           && require_pkg_config libwebp libwebp webp/encode.h WebPGetEncoderVersion
4726 enabled libx264           && require_pkg_config libx264 x264 "stdint.h x264.h" x264_encoder_encode &&
4727                              require_cpp_condition libx264 x264.h "X264_BUILD >= 118" &&
4728                              check_cpp_condition libx262 x264.h "X264_MPEG2"
4729 enabled libx265           && require_pkg_config libx265 x265 x265.h x265_api_get &&
4730                              require_cpp_condition libx265 x265.h "X265_BUILD >= 57"
4731 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4732 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4733 enabled mbedtls           && require mbedtls mbedtls/ssl.h mbedtls_ssl_init -lmbedtls -lmbedcrypto -lmbedx509
4734 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4735                                { ! enabled cross_compile &&
4736                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4737                                  add_ldflags -L/opt/vc/lib/ &&
4738                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4739                                die "ERROR: mmal not found" &&
4740                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4741 enabled nvenc             && require_cpp_condition nvenc nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6"
4742 enabled omx               && require_headers OMX_Core.h
4743 enabled omx_rpi           && { check_headers OMX_Core.h ||
4744                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_headers OMX_Core.h ; } ||
4745                                die "ERROR: OpenMAX IL headers not found"; } && enable omx
4746 enabled openssl           && { { check_pkg_config openssl openssl openssl/ssl.h OPENSSL_init_ssl ||
4747                                  check_pkg_config openssl openssl openssl/ssl.h SSL_library_init; } ||
4748                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4749                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4750                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4751                                die "ERROR: openssl not found"; }
4752
4753 # SDL adds some CFLAGS that should not be part of the general CFLAGS.
4754 enabled avplay &&
4755     test_pkg_config sdl "sdl >= 1.2.1 sdl < 1.3.0" SDL_events.h SDL_PollEvent
4756
4757 check_headers linux/fb.h
4758 check_headers linux/videodev2.h
4759 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4760
4761 check_headers AVFoundation/AVFoundation.h
4762
4763 check_headers sys/videoio.h
4764
4765 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4766 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4767 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4768 # w32api 3.12 had it defined wrong
4769 check_cpp_condition vfwcap_defines vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER"
4770
4771 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4772 check_headers "dev/bktr/ioctl_meteor.h dev/bktr/ioctl_bt848.h"                   ||
4773     check_headers "machine/ioctl_meteor.h machine/ioctl_bt848.h"                 ||
4774     check_headers "dev/video/meteor/ioctl_meteor.h dev/video/bktr/ioctl_bt848.h" ||
4775     check_headers "dev/ic/bt8xx.h"
4776
4777 check_headers sys/soundcard.h
4778
4779 enabled alsa_indev &&
4780     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4781
4782 enabled libjack &&
4783     require_pkg_config libjack jack jack/jack.h jack_port_get_latency_range
4784
4785 enabled sndio_indev && check_lib sndio sndio.h sio_open -lsndio
4786
4787 if enabled libcdio; then
4788     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4789     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4790     die "ERROR: No usable libcdio/cdparanoia found"
4791 fi
4792
4793 if enabled libxcb; then
4794     require_pkg_config libxcb xcb xcb/xcb.h xcb_connect
4795     require_pkg_config libxcb_shape xcb-shape xcb/shape.h xcb_shape_rectangles
4796     disabled libxcb_shm ||
4797         check_pkg_config libxcb_shm xcb-shm xcb/shm.h xcb_shm_attach
4798     disabled libxcb_xfixes ||
4799         check_pkg_config libxcb_xfixes xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image
4800 fi
4801
4802 # d3d11va requires linking directly to dxgi and d3d11 if not building for
4803 # the desktop api partition
4804 test_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
4805 #ifdef WINAPI_FAMILY
4806 #include <winapifamily.h>
4807 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4808 #error desktop, not uwp
4809 #else
4810 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
4811 #endif
4812 #else
4813 #error no family set
4814 #endif
4815 EOF
4816
4817 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4818
4819 if enabled vaapi; then
4820      require_cc vaapi "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)"
4821      check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4822      check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4823 fi
4824
4825 enabled vaapi &&
4826     test_cpp_condition "va/va.h" "VA_CHECK_VERSION(1, 0, 0)" &&
4827     enable vaapi_1
4828
4829 enabled vdpau &&
4830     check_cpp_condition vdpau vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP"
4831
4832 enabled vdpau &&
4833     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4834
4835 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4836
4837 # add some useful compiler flags if supported
4838 check_cflags -Wdeclaration-after-statement
4839 check_cflags -Wall
4840 check_cflags -Wdisabled-optimization
4841 check_cflags -Wpointer-arith
4842 check_cflags -Wredundant-decls
4843 check_cflags -Wwrite-strings
4844 check_cflags -Wtype-limits
4845 check_cflags -Wundef
4846 check_cflags -Wmissing-prototypes
4847 check_cflags -Wstrict-prototypes
4848
4849 if enabled extra_warnings; then
4850     check_cflags -Wcast-qual
4851     check_cflags -Wextra
4852     check_cflags -Wpedantic
4853 fi
4854
4855 check_disable_warning(){
4856     warning_flag=-W${1#-Wno-}
4857     test_cflags $warning_flag && add_cflags $1
4858 }
4859
4860 check_disable_warning -Wno-parentheses
4861 check_disable_warning -Wno-switch
4862 check_disable_warning -Wno-format-zero-length
4863 check_disable_warning -Wno-pointer-sign
4864
4865 check_disable_warning_headers(){
4866     warning_flag=-W${1#-Wno-}
4867     test_cflags $warning_flag && add_cflags_headers $1
4868 }
4869
4870 check_disable_warning_headers -Wno-deprecated-declarations
4871 check_disable_warning_headers -Wno-unused-variable
4872
4873 check_objcflags -fobjc-arc && enable objc_arc
4874
4875 test_cc <<EOF && enable blocks_extension
4876 void (^block)(void);
4877 EOF
4878
4879 # add some linker flags
4880 check_ldflags -Wl,--warn-common
4881 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4882 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir && add_ldsoflags -Wl,-rpath,$libdir
4883 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4884
4885 # add some strip flags
4886 # -wN '..@*' is more selective than -x, but not available everywhere.
4887 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4888
4889 enabled neon_clobber_test &&
4890     check_ldflags -Wl,--wrap,avcodec_open2              \
4891                   -Wl,--wrap,avcodec_decode_audio4      \
4892                   -Wl,--wrap,avcodec_decode_video2      \
4893                   -Wl,--wrap,avcodec_decode_subtitle2   \
4894                   -Wl,--wrap,avcodec_encode_audio2      \
4895                   -Wl,--wrap,avcodec_encode_video2      \
4896                   -Wl,--wrap,avcodec_encode_subtitle    \
4897                   -Wl,--wrap,avcodec_send_packet        \
4898                   -Wl,--wrap,avcodec_receive_packet     \
4899                   -Wl,--wrap,avcodec_send_frame         \
4900                   -Wl,--wrap,avcodec_receive_frame      \
4901                   -Wl,--wrap,avresample_convert ||
4902     disable neon_clobber_test
4903
4904 enabled xmm_clobber_test &&
4905     check_ldflags -Wl,--wrap,avcodec_open2              \
4906                   -Wl,--wrap,avcodec_decode_audio4      \
4907                   -Wl,--wrap,avcodec_decode_video2      \
4908                   -Wl,--wrap,avcodec_decode_subtitle2   \
4909                   -Wl,--wrap,avcodec_encode_audio2      \
4910                   -Wl,--wrap,avcodec_encode_video2      \
4911                   -Wl,--wrap,avcodec_encode_subtitle    \
4912                   -Wl,--wrap,avcodec_send_packet        \
4913                   -Wl,--wrap,avcodec_receive_packet     \
4914                   -Wl,--wrap,avcodec_send_frame         \
4915                   -Wl,--wrap,avcodec_receive_frame      \
4916                   -Wl,--wrap,avresample_convert         \
4917                   -Wl,--wrap,sws_scale ||
4918     disable xmm_clobber_test
4919
4920 check_ld proper_dce <<EOF
4921 extern const int array[512];
4922 static inline int func(void) { return array[0]; }
4923 int main(void) { return 0; }
4924 EOF
4925
4926 if enabled proper_dce; then
4927     echo "X { local: *; };" > $TMPV
4928     if test_ldflags -Wl,${version_script},$TMPV; then
4929         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
4930         quotes='""'
4931         test_cc <<EOF && enable symver_asm_label
4932 void ff_foo(void) __asm__ ("av_foo@VERSION");
4933 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4934 EOF
4935         test_cc <<EOF && enable symver_gnu_asm
4936 __asm__(".symver ff_foo,av_foo@VERSION");
4937 void ff_foo(void) {}
4938 EOF
4939     fi
4940 fi
4941
4942 if [ -z "$optflags" ]; then
4943     if enabled small; then
4944         optflags=$cflags_size
4945     elif enabled optimizations; then
4946         optflags=$cflags_speed
4947     else
4948         optflags=$cflags_noopt
4949     fi
4950 fi
4951
4952 check_optflags(){
4953     check_cflags "$@"
4954     enabled lto && check_ldflags "$@"
4955 }
4956
4957 check_optflags $optflags
4958 check_optflags -fno-math-errno
4959 check_optflags -fno-signed-zeros
4960
4961 if enabled lto; then
4962     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4963     check_cflags  -flto
4964     check_ldflags -flto $cpuflags
4965 fi
4966
4967 if enabled icc; then
4968     # Just warnings, no remarks
4969     check_cflags -w1
4970     # -wd: Disable following warnings
4971     # 144, 167, 556: -Wno-pointer-sign
4972     # 1292: attribute "foo" ignored
4973     # 1419: external declaration in primary source file
4974     # 10006: ignoring unknown option -fno-signed-zeros
4975     # 10148: ignoring unknown option -Wno-parentheses
4976     # 10156: ignoring option '-W'; no argument required
4977     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4978     # 11030: Warning unknown option --as-needed
4979     # 10156: ignoring option '-export'; no argument required
4980     check_ldflags -wd10156,11030
4981     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4982     enable ebp_available
4983     if enabled x86_32; then
4984         icc_version=$($cc -dumpversion)
4985         test ${icc_version%%.*} -ge 11 &&
4986             check_cflags -falign-stack=maintain-16-byte ||
4987             disable aligned_stack
4988     fi
4989 elif enabled gcc; then
4990     check_optflags -fno-tree-vectorize
4991     check_cflags -Werror=implicit-function-declaration
4992     check_cflags -Werror=missing-prototypes
4993     check_cflags -Werror=return-type
4994     check_cflags -Werror=declaration-after-statement
4995     check_cflags -Werror=vla
4996     check_cflags -Werror=format-security
4997     check_cflags -fdiagnostics-color=auto
4998     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4999     if enabled x86_32; then
5000         case $target_os in
5001         *bsd*)
5002             # BSDs don't guarantee a 16 byte aligned stack, but we can
5003             # request GCC to try to maintain 16 byte alignment throughout
5004             # function calls. Library entry points that might call assembly
5005             # functions align the stack. (The parameter means 2^4 bytes.)
5006             check_cflags -mpreferred-stack-boundary=4
5007             ;;
5008         esac
5009     fi
5010 elif enabled llvm_gcc; then
5011     check_cflags -mllvm -stack-alignment=16
5012 elif enabled clang; then
5013     if enabled x86_32; then
5014         # Clang doesn't support maintaining alignment without assuming the
5015         # same alignment in every function. If 16 byte alignment would be
5016         # enabled, one would also have to either add attribute_align_arg on
5017         # every single entry point into the libraries or enable -mstackrealign
5018         # (doing stack realignment in every single function).
5019         case $target_os in
5020         mingw32|win32|*bsd*)
5021             disable aligned_stack
5022             ;;
5023         *)
5024             check_cflags -mllvm -stack-alignment=16
5025             ;;
5026         esac
5027     else
5028         check_cflags -mllvm -stack-alignment=16
5029     fi
5030     check_cflags -Qunused-arguments
5031     check_cflags -Werror=implicit-function-declaration
5032     check_cflags -Werror=missing-prototypes
5033     check_cflags -Werror=return-type
5034 elif enabled cparser; then
5035     add_cflags -Wno-missing-variable-declarations
5036     add_cflags -Wno-empty-statement
5037 elif enabled armcc; then
5038     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
5039     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
5040     # 2523: use of inline assembly is deprecated
5041     add_cflags -W${armcc_opt},--diag_suppress=2523
5042     add_cflags -W${armcc_opt},--diag_suppress=1207
5043     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
5044     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
5045     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
5046     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
5047 elif enabled pathscale; then
5048     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
5049     disable inline_asm
5050 elif enabled_any msvc icl; then
5051     enabled x86_32 && disable aligned_stack
5052     enabled_all x86_32 debug && add_cflags -Oy-
5053     enabled debug && add_ldflags -debug
5054     enable pragma_deprecated
5055     if enabled icl; then
5056         # -Qansi-alias is basically -fstrict-aliasing, but does not work
5057         # (correctly) on icl 13.x.
5058         test_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
5059             add_cflags -Qansi-alias
5060         # icl will pass the inline asm tests but inline asm is currently
5061         # not supported (build will fail)
5062         disable inline_asm
5063     fi
5064     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
5065     check_cpp_condition log2 crtversion.h "_VC_CRT_MAJOR_VERSION >= 12"
5066     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
5067     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
5068     # (as it ends up if the restrict redefine is done before including stdlib.h), while
5069     # MSVC 2013 and newer can handle it fine.
5070     # If this declspec fails, force including stdlib.h before the restrict redefinition
5071     # happens in config.h.
5072     if [ $restrict_keyword != restrict ]; then
5073         test_cc <<EOF || add_cflags -FIstdlib.h
5074 __declspec($restrict_keyword) void *foo(int);
5075 EOF
5076     fi
5077 fi
5078
5079 for pfx in "" host_; do
5080     varname=${pfx%_}cc_type
5081     eval "type=\$$varname"
5082     if [ "$type" = "msvc" ]; then
5083         test_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
5084 static inline int foo(int a) { return a; }
5085 EOF
5086     fi
5087 done
5088
5089 case $as_type in
5090     clang)
5091         add_asflags -Qunused-arguments
5092     ;;
5093 esac
5094
5095 case $ld_type in
5096     clang)
5097         check_ldflags -Qunused-arguments
5098     ;;
5099 esac
5100
5101 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
5102
5103 check_cmd pod2man --help
5104 check_cmd texi2html -version
5105
5106 check_deps $CONFIG_LIST       \
5107            $CONFIG_EXTRA      \
5108            $HAVE_LIST         \
5109            $ALL_COMPONENTS    \
5110
5111 flatten_extralibs(){
5112     unset nested_entries
5113     list_name=$1
5114     eval list=\$${1}
5115     for entry in $list; do
5116         entry_copy=$entry
5117         resolve entry_copy
5118         append nested_entries $(filter '*_extralibs' $entry_copy)
5119         flat_entries=$(filter_out '*_extralibs' $entry_copy)
5120         eval $entry="\$flat_entries"
5121     done
5122     append $list_name "$nested_entries"
5123
5124     resolve nested_entries
5125     if test -n "$(filter '*_extralibs' $nested_entries)"; then
5126         flatten_extralibs $list_name
5127     fi
5128 }
5129
5130 for linkunit in $LIBRARY_LIST; do
5131     unset current_extralibs
5132     eval components=\$$(toupper ${linkunit})_COMPONENTS_LIST
5133     for comp in ${components}; do
5134         enabled $comp || continue
5135         comp_extralibs="${comp}_extralibs"
5136         append current_extralibs $comp_extralibs
5137     done
5138     eval prepend ${linkunit}_extralibs $current_extralibs
5139 done
5140
5141 for linkunit in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5142     flatten_extralibs ${linkunit}_extralibs
5143     unique  ${linkunit}_extralibs
5144     resolve ${linkunit}_extralibs
5145     eval ${linkunit}_extralibs=\$\(\$ldflags_filter \$${linkunit}_extralibs\)
5146 done
5147
5148 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
5149
5150 for thread in $THREADS_LIST; do
5151     if enabled $thread; then
5152         test -n "$thread_type" &&
5153             die "ERROR: Only one thread type must be selected." ||
5154             thread_type="$thread"
5155     fi
5156 done
5157
5158 if disabled stdatomic; then
5159     if enabled atomics_gcc; then
5160         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
5161     elif enabled atomics_win32; then
5162         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
5163     elif enabled atomics_suncc; then
5164         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
5165     elif enabled pthreads; then
5166         add_compat atomics/pthread/stdatomic.o
5167         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
5168     else
5169         enabled threads && die "Threading is enabled, but no atomics are available"
5170         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
5171     fi
5172 fi
5173
5174 enabled zlib && add_cppflags -DZLIB_CONST
5175
5176 # conditional library dependencies, in linking order
5177 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
5178 enabled_any asyncts_filter resample_filter &&
5179                            prepend avfilter_deps "avresample"
5180 enabled scale_filter    && prepend avfilter_deps "swscale"
5181
5182 enabled opus_decoder    && prepend avcodec_deps "avresample"
5183
5184 expand_deps(){
5185     lib_deps=${1}_deps
5186     eval "deps=\$$lib_deps"
5187     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
5188     unique $lib_deps
5189 }
5190
5191 map 'expand_deps $v' $LIBRARY_LIST
5192
5193 if test "$quiet" != "yes"; then
5194
5195 echo "install prefix            $prefix"
5196 echo "source path               $source_path"
5197 echo "C compiler                $cc"
5198 echo "C library                 $libc_type"
5199 if test "$host_cc" != "$cc"; then
5200     echo "host C compiler           $host_cc"
5201     echo "host C library            $host_libc_type"
5202 fi
5203 echo "ARCH                      $arch ($cpu)"
5204 if test "$extra_version" != ""; then
5205     echo "version string suffix     $extra_version"
5206 fi
5207 echo "big-endian                ${bigendian-no}"
5208 echo "runtime cpu detection     ${runtime_cpudetect-no}"
5209 if enabled x86; then
5210     echo "standalone assembly       ${x86asm-no}"
5211     echo "x86 assembler             ${x86asmexe}"
5212     echo "MMX enabled               ${mmx-no}"
5213     echo "MMXEXT enabled            ${mmxext-no}"
5214     echo "3DNow! enabled            ${amd3dnow-no}"
5215     echo "3DNow! extended enabled   ${amd3dnowext-no}"
5216     echo "SSE enabled               ${sse-no}"
5217     echo "SSSE3 enabled             ${ssse3-no}"
5218     echo "AVX enabled               ${avx-no}"
5219     echo "XOP enabled               ${xop-no}"
5220     echo "FMA3 enabled              ${fma3-no}"
5221     echo "FMA4 enabled              ${fma4-no}"
5222     echo "i686 features enabled     ${i686-no}"
5223     echo "CMOV is fast              ${fast_cmov-no}"
5224     echo "EBX available             ${ebx_available-no}"
5225     echo "EBP available             ${ebp_available-no}"
5226 fi
5227 if enabled aarch64; then
5228     echo "NEON enabled              ${neon-no}"
5229     echo "VFP enabled               ${vfp-no}"
5230 fi
5231 if enabled arm; then
5232     echo "ARMv5TE enabled           ${armv5te-no}"
5233     echo "ARMv6 enabled             ${armv6-no}"
5234     echo "ARMv6T2 enabled           ${armv6t2-no}"
5235     echo "VFP enabled               ${vfp-no}"
5236     echo "NEON enabled              ${neon-no}"
5237 fi
5238 if enabled ppc; then
5239     echo "AltiVec enabled           ${altivec-no}"
5240     echo "VSX enabled               ${vsx-no}"
5241     echo "POWER8 enabled            ${power8-no}"
5242     echo "PPC 4xx optimizations     ${ppc4xx-no}"
5243     echo "dcbzl available           ${dcbzl-no}"
5244 fi
5245 echo "debug symbols             ${debug-no}"
5246 echo "optimize for size         ${small-no}"
5247 echo "optimizations             ${optimizations-no}"
5248 echo "static                    ${static-no}"
5249 echo "shared                    ${shared-no}"
5250 echo "network support           ${network-no}"
5251 echo "threading support         ${thread_type-no}"
5252 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
5253
5254 echo "External libraries:"
5255 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
5256 echo
5257 echo "External libraries providing hardware acceleration:"
5258 print_enabled '' $HWACCEL_LIBRARY_LIST | print_3_columns
5259 echo
5260
5261 echo "Libraries:"
5262 print_enabled '' $LIBRARY_LIST | print_3_columns
5263 echo
5264
5265 echo "Programs:"
5266 print_enabled '' $PROGRAM_LIST | print_3_columns
5267 echo
5268
5269 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev; do
5270     echo "Enabled ${type}s:"
5271     eval list=\$$(toupper $type)_LIST
5272     print_enabled '_*' $list | print_3_columns
5273     echo
5274 done
5275
5276 if test -n "$ignore_tests"; then
5277     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
5278     echo "Ignored FATE tests:"
5279     echo $ignore_tests | print_3_columns
5280     echo
5281 fi
5282
5283 echo "License: $license"
5284
5285 fi # test "$quiet" != "yes"
5286
5287 test -n "$WARNINGS" && printf "\n$WARNINGS"
5288
5289 test -e Makefile || echo "include $source_path/Makefile" > Makefile
5290
5291 esc(){
5292     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5293 }
5294
5295 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
5296
5297 config_files="$TMPH avbuild/config.mak"
5298
5299 cat > avbuild/config.mak <<EOF
5300 # Automatically generated by configure - do not modify!
5301 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
5302 prefix=$prefix
5303 LIBDIR=\$(DESTDIR)$libdir
5304 SHLIBDIR=\$(DESTDIR)$shlibdir
5305 INCDIR=\$(DESTDIR)$incdir
5306 BINDIR=\$(DESTDIR)$bindir
5307 DATADIR=\$(DESTDIR)$datadir
5308 DOCDIR=\$(DESTDIR)$docdir
5309 MANDIR=\$(DESTDIR)$mandir
5310 SRC_PATH=$source_path
5311 CC_IDENT=$cc_ident
5312 ARCH=$arch
5313 INTRINSICS=$intrinsics
5314 EXTERN_PREFIX=$extern_prefix
5315 CC=$cc
5316 AS=$as
5317 OBJCC=$objcc
5318 LD=$ld
5319 DEPCC=$dep_cc
5320 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
5321 DEPAS=$as
5322 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
5323 X86ASM=$x86asmexe
5324 DEPX86ASM=$x86asmexe
5325 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
5326 AR=$ar
5327 ARFLAGS=$arflags
5328 AR_O=$ar_o
5329 AR_CMD=$ar
5330 NM_CMD=$nm
5331 RANLIB=$ranlib
5332 STRIP=$strip
5333 LN_S=$ln_s
5334 CPPFLAGS=$CPPFLAGS
5335 CFLAGS=$CFLAGS
5336 OBJCFLAGS=$OBJCFLAGS
5337 ASFLAGS=$ASFLAGS
5338 AS_C=$AS_C
5339 AS_O=$AS_O
5340 OBJCC_C=$OBJCC_C
5341 OBJCC_E=$OBJCC_E
5342 OBJCC_O=$OBJCC_O
5343 CC_C=$CC_C
5344 CC_E=$CC_E
5345 CC_O=$CC_O
5346 X86ASM_O=$X86ASM_O
5347 LD_O=$LD_O
5348 LD_LIB=$LD_LIB
5349 LD_PATH=$LD_PATH
5350 DLLTOOL=$dlltool
5351 LDFLAGS=$LDFLAGS
5352 LDEXEFLAGS=$LDEXEFLAGS
5353 LDSOFLAGS=$LDSOFLAGS
5354 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
5355 STRIPFLAGS=$STRIPFLAGS
5356 X86ASMFLAGS=$X86ASMFLAGS
5357 LIBPREF=$LIBPREF
5358 LIBSUF=$LIBSUF
5359 LIBNAME=$LIBNAME
5360 SLIBPREF=$SLIBPREF
5361 SLIBSUF=$SLIBSUF
5362 EXESUF=$EXESUF
5363 EXTRA_VERSION=$extra_version
5364 CCDEP=$CCDEP
5365 CCDEP_FLAGS=$CCDEP_FLAGS
5366 ASDEP=$ASDEP
5367 ASDEP_FLAGS=$ASDEP_FLAGS
5368 X86ASMDEP=$X86ASMDEP
5369 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
5370 CC_DEPFLAGS=$CC_DEPFLAGS
5371 AS_DEPFLAGS=$AS_DEPFLAGS
5372 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
5373 HOSTCC=$host_cc
5374 HOSTLD=$host_ld
5375 HOSTCFLAGS=$host_cflags
5376 HOSTCPPFLAGS=$host_cppflags
5377 HOSTEXESUF=$HOSTEXESUF
5378 HOSTLDFLAGS=$host_ldflags
5379 HOSTEXTRALIBS=$host_extralibs
5380 DEPHOSTCC=$host_cc
5381 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
5382 HOSTCCDEP=$HOSTCCDEP
5383 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
5384 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
5385 HOSTCC_C=$HOSTCC_C
5386 HOSTCC_O=$HOSTCC_O
5387 HOSTLD_O=$HOSTLD_O
5388 TARGET_EXEC=$target_exec $target_exec_args
5389 TARGET_PATH=$target_path
5390 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
5391 CFLAGS-avplay=$sdl_cflags
5392 CFLAGS_HEADERS=$CFLAGS_HEADERS
5393 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
5394 EXTRALIBS=$extralibs
5395 COMPAT_OBJS=$compat_objs
5396 INSTALL=install
5397 LIBTARGET=${LIBTARGET}
5398 SLIBNAME=${SLIBNAME}
5399 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
5400 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
5401 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
5402 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
5403 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
5404 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
5405 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
5406 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
5407 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
5408 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
5409 IGNORE_TESTS=$ignore_tests
5410 EOF
5411
5412 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> avbuild/config.mak' $LIBRARY_LIST
5413
5414 for entry in $LIBRARY_LIST $PROGRAM_LIST $EXTRALIBS_LIST; do
5415     eval echo "EXTRALIBS-${entry}=\$${entry}_extralibs" >> avbuild/config.mak
5416 done
5417
5418 cat > $TMPH <<EOF
5419 /* Automatically generated by configure - do not modify! */
5420 #ifndef LIBAV_CONFIG_H
5421 #define LIBAV_CONFIG_H
5422 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
5423 #define LIBAV_LICENSE "$(c_escape $license)"
5424 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
5425 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
5426 #define EXTERN_PREFIX "${extern_prefix}"
5427 #define EXTERN_ASM ${extern_prefix}
5428 #define SLIBSUF "$SLIBSUF"
5429 EOF
5430
5431 test $restrict_keyword != restrict &&
5432     echo "#define restrict $restrict_keyword" >> $TMPH
5433
5434 test -n "$malloc_prefix" &&
5435     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
5436
5437 if enabled x86asm; then
5438     append config_files $TMPASM
5439     cat > $TMPASM <<EOF
5440 ; Automatically generated by configure - do not modify!
5441 EOF
5442 fi
5443
5444 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
5445
5446 print_config ARCH_   "$config_files" $ARCH_LIST
5447 print_config HAVE_   "$config_files" $HAVE_LIST
5448 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
5449                                      $CONFIG_EXTRA      \
5450                                      $ALL_COMPONENTS    \
5451
5452 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
5453
5454 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
5455 cp_if_changed $TMPH config.h
5456 touch avbuild/.config
5457
5458 enabled x86asm && cp_if_changed $TMPASM config.asm
5459
5460 cat > $TMPH <<EOF
5461 /* Generated by libav configure */
5462 #ifndef AVUTIL_AVCONFIG_H
5463 #define AVUTIL_AVCONFIG_H
5464 EOF
5465
5466 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
5467
5468 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
5469
5470 cp_if_changed $TMPH libavutil/avconfig.h
5471
5472 # generate the lists of enabled components
5473 print_enabled_components(){
5474     file=$1
5475     struct_name=$2
5476     name=$3
5477     shift 3
5478     echo "static const $struct_name * const $name[] = {" > $TMPH
5479     for c in $*; do
5480         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
5481     done
5482     echo "    NULL };" >> $TMPH
5483     cp_if_changed $TMPH $file
5484 }
5485
5486 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
5487 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
5488
5489 # Settings for pkg-config files
5490
5491 cat > $TMPH <<EOF
5492 # Automatically generated by configure - do not modify!
5493 shared=$shared
5494 prefix=$prefix
5495 libdir=$libdir
5496 incdir=$incdir
5497 source_path=${source_path}
5498 LIBPREF=${LIBPREF}
5499 LIBSUF=${LIBSUF}
5500 extralibs_avutil="$avutil_extralibs"
5501 extralibs_avcodec="$avcodec_extralibs"
5502 extralibs_avformat="$avformat_extralibs"
5503 extralibs_avdevice="$avdevice_extralibs"
5504 extralibs_avfilter="$avfilter_extralibs"
5505 extralibs_avresample="$avresample_extralibs"
5506 extralibs_swscale="$swscale_extralibs"
5507 EOF
5508
5509 for lib in $LIBRARY_LIST; do
5510     lib_deps="$(eval echo \$${lib}_deps)"
5511     echo ${lib}_deps=\"$lib_deps\" >> $TMPH
5512 done
5513
5514 cp_if_changed $TMPH avbuild/config.sh