configure

   1 #!/bin/sh
   2 ##
   3 ##  configure
   4 ##
   5 ##  This script is the front-end to the build system. It provides a similar
   6 ##  interface to standard configure scripts with some extra bits for dealing
   7 ##  with toolchains that differ from the standard POSIX interface and
   8 ##  for extracting subsets of the source tree. In theory, reusable parts
   9 ##  of this script were intended to live in build/make/configure.sh,
  10 ##  but in practice, the line is pretty blurry.
  11 ##
  12 ##  This build system is based in part on the FFmpeg configure script.
  13 ##
  14
  15 #source_path="`dirname \"$0\"`"
  16 source_path=${0%/*}
  17 . "${source_path}/build/make/configure.sh"
  18
  19 show_help(){
  20     show_help_pre
  21     cat << EOF
  22 Advanced options:
  23   ${toggle_libs}                  libraries
  24   ${toggle_examples}              examples
  25   ${toggle_docs}                  documentation
  26   ${toggle_unit_tests}            unit tests
  27   ${toggle_decode_perf_tests}     build decoder perf tests with unit tests
  28   ${toggle_encode_perf_tests}     build encoder perf tests with unit tests
  29   --cpu=CPU                       tune for the specified CPU (ARM: cortex-a8, X86: sse3)
  30   --libc=PATH                     path to alternate libc
  31   --size-limit=WxH                max size to allow in the decoder
  32   --as={yasm|nasm|auto}           use specified assembler [auto, yasm preferred]
  33   --sdk-path=PATH                 path to root of sdk (android builds only)
  34   ${toggle_codec_srcs}            in/exclude codec library source code
  35   ${toggle_debug_libs}            in/exclude debug version of libraries
  36   ${toggle_static_msvcrt}         use static MSVCRT (VS builds only)
  37   ${toggle_vp9_highbitdepth}      use VP9 high bit depth (10/12) profiles
  38   ${toggle_better_hw_compatibility}
  39                                   enable encoder to produce streams with better
  40                                   hardware decoder compatibility
  41   ${toggle_vp8}                   VP8 codec support
  42   ${toggle_vp9}                   VP9 codec support
  43   ${toggle_vp10}                  VP10 codec support
  44   ${toggle_internal_stats}        output of encoder internal stats for debug, if supported (encoders)
  45   ${toggle_postproc}              postprocessing
  46   ${toggle_vp9_postproc}          vp9 specific postprocessing
  47   ${toggle_multithread}           multithreaded encoding and decoding
  48   ${toggle_spatial_resampling}    spatial sampling (scaling) support
  49   ${toggle_realtime_only}         enable this option while building for real-time encoding
  50   ${toggle_onthefly_bitpacking}   enable on-the-fly bitpacking in real-time encoding
  51   ${toggle_error_concealment}     enable this option to get a decoder which is able to conceal losses
  52   ${toggle_coefficient_range_checking}
  53                                   enable decoder to check if intermediate
  54                                   transform coefficients are in valid range
  55   ${toggle_runtime_cpu_detect}    runtime cpu detection
  56   ${toggle_shared}                shared library support
  57   ${toggle_static}                static library support
  58   ${toggle_small}                 favor smaller size over speed
  59   ${toggle_postproc_visualizer}   macro block / block level visualizers
  60   ${toggle_multi_res_encoding}    enable multiple-resolution encoding
  61   ${toggle_temporal_denoising}    enable temporal denoising and disable the spatial denoiser
  62   ${toggle_vp9_temporal_denoising}
  63                                   enable vp9 temporal denoising
  64   ${toggle_webm_io}               enable input from and output to WebM container
  65   ${toggle_libyuv}                enable libyuv
  66
  67 Codecs:
  68   Codecs can be selectively enabled or disabled individually, or by family:
  69       --disable-<codec>
  70   is equivalent to:
  71       --disable-<codec>-encoder
  72       --disable-<codec>-decoder
  73
  74   Codecs available in this distribution:
  75 EOF
  76 #restore editor state '
  77
  78     family="";
  79     last_family="";
  80     c="";
  81     str="";
  82     for c in ${CODECS}; do
  83         family=${c%_*}
  84         if [ "${family}" != "${last_family}" ]; then
  85             [ -z "${str}" ] || echo "${str}"
  86             str="$(printf '    %10s:' ${family})"
  87         fi
  88         str="${str} $(printf '%10s' ${c#*_})"
  89         last_family=${family}
  90     done
  91     echo "${str}"
  92     show_help_post
  93 }
  94
  95 ##
  96 ## BEGIN APPLICATION SPECIFIC CONFIGURATION
  97 ##
  98
  99 # all_platforms is a list of all supported target platforms. Maintain
 100 # alphabetically by architecture, generic-gnu last.
 101 all_platforms="${all_platforms} armv6-darwin-gcc"
 102 all_platforms="${all_platforms} armv6-linux-rvct"
 103 all_platforms="${all_platforms} armv6-linux-gcc"
 104 all_platforms="${all_platforms} armv6-none-rvct"
 105 all_platforms="${all_platforms} arm64-darwin-gcc"
 106 all_platforms="${all_platforms} armv7-android-gcc"   #neon Cortex-A8
 107 all_platforms="${all_platforms} armv7-darwin-gcc"    #neon Cortex-A8
 108 all_platforms="${all_platforms} armv7-linux-rvct"    #neon Cortex-A8
 109 all_platforms="${all_platforms} armv7-linux-gcc"     #neon Cortex-A8
 110 all_platforms="${all_platforms} armv7-none-rvct"     #neon Cortex-A8
 111 all_platforms="${all_platforms} armv7-win32-vs11"
 112 all_platforms="${all_platforms} armv7-win32-vs12"
 113 all_platforms="${all_platforms} armv7-win32-vs14"
 114 all_platforms="${all_platforms} armv7s-darwin-gcc"
 115 all_platforms="${all_platforms} mips32-linux-gcc"
 116 all_platforms="${all_platforms} mips64-linux-gcc"
 117 all_platforms="${all_platforms} sparc-solaris-gcc"
 118 all_platforms="${all_platforms} x86-android-gcc"
 119 all_platforms="${all_platforms} x86-darwin8-gcc"
 120 all_platforms="${all_platforms} x86-darwin8-icc"
 121 all_platforms="${all_platforms} x86-darwin9-gcc"
 122 all_platforms="${all_platforms} x86-darwin9-icc"
 123 all_platforms="${all_platforms} x86-darwin10-gcc"
 124 all_platforms="${all_platforms} x86-darwin11-gcc"
 125 all_platforms="${all_platforms} x86-darwin12-gcc"
 126 all_platforms="${all_platforms} x86-darwin13-gcc"
 127 all_platforms="${all_platforms} x86-darwin14-gcc"
 128 all_platforms="${all_platforms} x86-darwin15-gcc"
 129 all_platforms="${all_platforms} x86-iphonesimulator-gcc"
 130 all_platforms="${all_platforms} x86-linux-gcc"
 131 all_platforms="${all_platforms} x86-linux-icc"
 132 all_platforms="${all_platforms} x86-os2-gcc"
 133 all_platforms="${all_platforms} x86-solaris-gcc"
 134 all_platforms="${all_platforms} x86-win32-gcc"
 135 all_platforms="${all_platforms} x86-win32-vs7"
 136 all_platforms="${all_platforms} x86-win32-vs8"
 137 all_platforms="${all_platforms} x86-win32-vs9"
 138 all_platforms="${all_platforms} x86-win32-vs10"
 139 all_platforms="${all_platforms} x86-win32-vs11"
 140 all_platforms="${all_platforms} x86-win32-vs12"
 141 all_platforms="${all_platforms} x86-win32-vs14"
 142 all_platforms="${all_platforms} x86_64-android-gcc"
 143 all_platforms="${all_platforms} x86_64-darwin9-gcc"
 144 all_platforms="${all_platforms} x86_64-darwin10-gcc"
 145 all_platforms="${all_platforms} x86_64-darwin11-gcc"
 146 all_platforms="${all_platforms} x86_64-darwin12-gcc"
 147 all_platforms="${all_platforms} x86_64-darwin13-gcc"
 148 all_platforms="${all_platforms} x86_64-darwin14-gcc"
 149 all_platforms="${all_platforms} x86_64-darwin15-gcc"
 150 all_platforms="${all_platforms} x86_64-iphonesimulator-gcc"
 151 all_platforms="${all_platforms} x86_64-linux-gcc"
 152 all_platforms="${all_platforms} x86_64-linux-icc"
 153 all_platforms="${all_platforms} x86_64-solaris-gcc"
 154 all_platforms="${all_platforms} x86_64-win64-gcc"
 155 all_platforms="${all_platforms} x86_64-win64-vs8"
 156 all_platforms="${all_platforms} x86_64-win64-vs9"
 157 all_platforms="${all_platforms} x86_64-win64-vs10"
 158 all_platforms="${all_platforms} x86_64-win64-vs11"
 159 all_platforms="${all_platforms} x86_64-win64-vs12"
 160 all_platforms="${all_platforms} x86_64-win64-vs14"
 161 all_platforms="${all_platforms} generic-gnu"
 162
 163 # all_targets is a list of all targets that can be configured
 164 # note that these should be in dependency order for now.
 165 all_targets="libs examples docs"
 166
 167 # all targets available are enabled, by default.
 168 for t in ${all_targets}; do
 169     [ -f "${source_path}/${t}.mk" ] && enable_feature ${t}
 170 done
 171
 172 if ! perl --version >/dev/null; then
 173     die "Perl is required to build"
 174 fi
 175
 176
 177 if [ "`cd \"${source_path}\" && pwd`" != "`pwd`" ]; then
 178   # test to see if source_path already configured
 179   if [ -f "${source_path}/vpx_config.h" ]; then
 180     die "source directory already configured; run 'make distclean' there first"
 181   fi
 182 fi
 183
 184 # check installed doxygen version
 185 doxy_version=$(doxygen --version 2>/dev/null)
 186 doxy_major=${doxy_version%%.*}
 187 if [ ${doxy_major:-0} -ge 1 ]; then
 188     doxy_version=${doxy_version#*.}
 189     doxy_minor=${doxy_version%%.*}
 190     doxy_patch=${doxy_version##*.}
 191
 192     [ $doxy_major -gt 1 ] && enable_feature doxygen
 193     [ $doxy_minor -gt 5 ] && enable_feature doxygen
 194     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable_feature doxygen
 195 fi
 196
 197 # disable codecs when their source directory does not exist
 198 [ -d "${source_path}/vp8" ] || disable_feature vp8
 199 [ -d "${source_path}/vp9" ] || disable_feature vp9
 200 [ -d "${source_path}/vp10" ] || disable_feature vp10
 201
 202 # disable vp10 codec by default
 203 disable_feature vp10
 204
 205 # install everything except the sources, by default. sources will have
 206 # to be enabled when doing dist builds, since that's no longer a common
 207 # case.
 208 enabled doxygen && enable_feature install_docs
 209 enable_feature install_bins
 210 enable_feature install_libs
 211
 212 enable_feature static
 213 enable_feature optimizations
 214 enable_feature dependency_tracking
 215 enable_feature spatial_resampling
 216 enable_feature multithread
 217 enable_feature os_support
 218 enable_feature temporal_denoising
 219
 220 CODECS="
 221     vp8_encoder
 222     vp8_decoder
 223     vp9_encoder
 224     vp9_decoder
 225     vp10_encoder
 226     vp10_decoder
 227 "
 228 CODEC_FAMILIES="
 229     vp8
 230     vp9
 231     vp10
 232 "
 233
 234 ARCH_LIST="
 235     arm
 236     mips
 237     x86
 238     x86_64
 239 "
 240 ARCH_EXT_LIST_X86="
 241     mmx
 242     sse
 243     sse2
 244     sse3
 245     ssse3
 246     sse4_1
 247     avx
 248     avx2
 249 "
 250 ARCH_EXT_LIST="
 251     edsp
 252     media
 253     neon
 254     neon_asm
 255
 256     mips32
 257     dspr2
 258     msa
 259     mips64
 260
 261     ${ARCH_EXT_LIST_X86}
 262 "
 263 HAVE_LIST="
 264     ${ARCH_EXT_LIST}
 265     vpx_ports
 266     pthread_h
 267     unistd_h
 268 "
 269 EXPERIMENT_LIST="
 270     spatial_svc
 271     fp_mb_stats
 272     emulate_hardware
 273     misc_fixes
 274 "
 275 CONFIG_LIST="
 276     dependency_tracking
 277     external_build
 278     install_docs
 279     install_bins
 280     install_libs
 281     install_srcs
 282     use_x86inc
 283     debug
 284     gprof
 285     gcov
 286     rvct
 287     gcc
 288     msvs
 289     pic
 290     big_endian
 291
 292     codec_srcs
 293     debug_libs
 294
 295     dequant_tokens
 296     dc_recon
 297     runtime_cpu_detect
 298     postproc
 299     vp9_postproc
 300     multithread
 301     internal_stats
 302     ${CODECS}
 303     ${CODEC_FAMILIES}
 304     encoders
 305     decoders
 306     static_msvcrt
 307     spatial_resampling
 308     realtime_only
 309     onthefly_bitpacking
 310     error_concealment
 311     shared
 312     static
 313     small
 314     postproc_visualizer
 315     os_support
 316     unit_tests
 317     webm_io
 318     libyuv
 319     decode_perf_tests
 320     encode_perf_tests
 321     multi_res_encoding
 322     temporal_denoising
 323     vp9_temporal_denoising
 324     coefficient_range_checking
 325     vp9_highbitdepth
 326     better_hw_compatibility
 327     experimental
 328     size_limit
 329     ${EXPERIMENT_LIST}
 330 "
 331 CMDLINE_SELECT="
 332     dependency_tracking
 333     external_build
 334     extra_warnings
 335     werror
 336     install_docs
 337     install_bins
 338     install_libs
 339     install_srcs
 340     debug
 341     gprof
 342     gcov
 343     pic
 344     use_x86inc
 345     optimizations
 346     ccache
 347     runtime_cpu_detect
 348     thumb
 349
 350     libs
 351     examples
 352     docs
 353     libc
 354     as
 355     size_limit
 356     codec_srcs
 357     debug_libs
 358
 359     dequant_tokens
 360     dc_recon
 361     postproc
 362     vp9_postproc
 363     multithread
 364     internal_stats
 365     ${CODECS}
 366     ${CODEC_FAMILIES}
 367     static_msvcrt
 368     spatial_resampling
 369     realtime_only
 370     onthefly_bitpacking
 371     error_concealment
 372     shared
 373     static
 374     small
 375     postproc_visualizer
 376     unit_tests
 377     webm_io
 378     libyuv
 379     decode_perf_tests
 380     encode_perf_tests
 381     multi_res_encoding
 382     temporal_denoising
 383     vp9_temporal_denoising
 384     coefficient_range_checking
 385     better_hw_compatibility
 386     vp9_highbitdepth
 387     experimental
 388 "
 389
 390 process_cmdline() {
 391     for opt do
 392         optval="${opt#*=}"
 393         case "$opt" in
 394         --disable-codecs) for c in ${CODECS}; do disable_feature $c; done ;;
 395         --enable-?*|--disable-?*)
 396         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
 397         if echo "${EXPERIMENT_LIST}" | grep "^ *$option\$" >/dev/null; then
 398             if enabled experimental; then
 399                 ${action}_feature $option
 400             else
 401                 log_echo "Ignoring $opt -- not in experimental mode."
 402             fi
 403         else
 404             process_common_cmdline $opt
 405         fi
 406         ;;
 407         *) process_common_cmdline "$opt"
 408         ;;
 409         esac
 410     done
 411 }
 412
 413 post_process_cmdline() {
 414     c=""
 415
 416     # If the codec family is disabled, disable all components of that family.
 417     # If the codec family is enabled, enable all components of that family.
 418     log_echo "Configuring selected codecs"
 419     for c in ${CODECS}; do
 420         disabled ${c%%_*} && disable_feature ${c}
 421         enabled ${c%%_*} && enable_feature ${c}
 422     done
 423
 424     # Enable all detected codecs, if they haven't been disabled
 425     for c in ${CODECS}; do soft_enable $c; done
 426
 427     # Enable the codec family if any component of that family is enabled
 428     for c in ${CODECS}; do
 429         enabled $c && enable_feature ${c%_*}
 430     done
 431
 432     # Set the {en,de}coders variable if any algorithm in that class is enabled
 433     for c in ${CODECS}; do
 434         enabled ${c} && enable_feature ${c##*_}s
 435     done
 436 }
 437
 438
 439 process_targets() {
 440     enabled child || write_common_config_banner
 441     write_common_target_config_h ${BUILD_PFX}vpx_config.h
 442     write_common_config_targets
 443
 444     # Calculate the default distribution name, based on the enabled features
 445     cf=""
 446     DIST_DIR=vpx
 447     for cf in $CODEC_FAMILIES; do
 448         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
 449             DIST_DIR="${DIST_DIR}-${cf}"
 450         elif enabled ${cf}_encoder; then
 451             DIST_DIR="${DIST_DIR}-${cf}cx"
 452         elif enabled ${cf}_decoder; then
 453             DIST_DIR="${DIST_DIR}-${cf}dx"
 454         fi
 455     done
 456     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
 457     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
 458     ! enabled postproc && ! enabled vp9_postproc && DIST_DIR="${DIST_DIR}-nopost"
 459     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
 460     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
 461     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
 462     case "${tgt_os}" in
 463     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
 464           DIST_DIR="${DIST_DIR}-${tgt_cc}"
 465           ;;
 466     esac
 467     if [ -f "${source_path}/build/make/version.sh" ]; then
 468         ver=`"$source_path/build/make/version.sh" --bare "$source_path"`
 469         DIST_DIR="${DIST_DIR}-${ver}"
 470         VERSION_STRING=${ver}
 471         ver=${ver%%-*}
 472         VERSION_PATCH=${ver##*.}
 473         ver=${ver%.*}
 474         VERSION_MINOR=${ver##*.}
 475         ver=${ver#v}
 476         VERSION_MAJOR=${ver%.*}
 477     fi
 478     enabled child || cat <<EOF >> config.mk
 479
 480 PREFIX=${prefix}
 481 ifeq (\$(MAKECMDGOALS),dist)
 482 DIST_DIR?=${DIST_DIR}
 483 else
 484 DIST_DIR?=\$(DESTDIR)${prefix}
 485 endif
 486 LIBSUBDIR=${libdir##${prefix}/}
 487
 488 VERSION_STRING=${VERSION_STRING}
 489
 490 VERSION_MAJOR=${VERSION_MAJOR}
 491 VERSION_MINOR=${VERSION_MINOR}
 492 VERSION_PATCH=${VERSION_PATCH}
 493
 494 CONFIGURE_ARGS=${CONFIGURE_ARGS}
 495 EOF
 496     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
 497
 498     #
 499     # Write makefiles for all enabled targets
 500     #
 501     for tgt in libs examples docs solution; do
 502         tgt_fn="$tgt-$toolchain.mk"
 503
 504         if enabled $tgt; then
 505             echo "Creating makefiles for ${toolchain} ${tgt}"
 506             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
 507             #write_${tgt}_config
 508         fi
 509     done
 510
 511 }
 512
 513 process_detect() {
 514     if enabled shared; then
 515         # Can only build shared libs on a subset of platforms. Doing this check
 516         # here rather than at option parse time because the target auto-detect
 517         # magic happens after the command line has been parsed.
 518         if ! enabled linux && ! enabled os2; then
 519             if enabled gnu; then
 520                 echo "--enable-shared is only supported on ELF; assuming this is OK"
 521             else
 522                 die "--enable-shared only supported on ELF and OS/2 for now"
 523             fi
 524         fi
 525     fi
 526     if [ -z "$CC" ] || enabled external_build; then
 527         echo "Bypassing toolchain for environment detection."
 528         enable_feature external_build
 529         check_header() {
 530             log fake_check_header "$@"
 531             header=$1
 532             shift
 533             var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
 534             disable_feature $var
 535             # Headers common to all environments
 536             case $header in
 537                 stdio.h)
 538                     true;
 539                 ;;
 540                 *)
 541                     result=false
 542                     for d in "$@"; do
 543                         [ -f "${d##-I}/$header" ] && result=true && break
 544                     done
 545                     ${result:-true}
 546             esac && enable_feature $var
 547
 548             # Specialize windows and POSIX environments.
 549             case $toolchain in
 550                 *-win*-*)
 551                     # Don't check for any headers in Windows builds.
 552                     false
 553                 ;;
 554                 *)
 555                     case $header in
 556                         pthread.h) true;;
 557                         unistd.h) true;;
 558                         *) false;;
 559                     esac && enable_feature $var
 560             esac
 561             enabled $var
 562         }
 563         check_ld() {
 564             true
 565         }
 566     fi
 567     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
 568     check_ld <<EOF || die "Toolchain is unable to link executables"
 569 int main(void) {return 0;}
 570 EOF
 571     # check system headers
 572     check_header pthread.h
 573     check_header unistd.h # for sysconf(3) and friends.
 574
 575     check_header vpx/vpx_integer.h -I${source_path} && enable_feature vpx_ports
 576 }
 577
 578 process_toolchain() {
 579     process_common_toolchain
 580
 581     # Enable some useful compiler flags
 582     if enabled gcc; then
 583         enabled werror && check_add_cflags -Werror
 584         check_add_cflags -Wall
 585         check_add_cflags -Wdeclaration-after-statement
 586         check_add_cflags -Wdisabled-optimization
 587         check_add_cflags -Wpointer-arith
 588         check_add_cflags -Wtype-limits
 589         check_add_cflags -Wcast-qual
 590         check_add_cflags -Wvla
 591         check_add_cflags -Wimplicit-function-declaration
 592         check_add_cflags -Wuninitialized
 593         check_add_cflags -Wunused-variable
 594         case ${CC} in
 595           *clang*)
 596               # libvpx and/or clang have issues with aliasing:
 597               # https://code.google.com/p/webm/issues/detail?id=603
 598               # work around them until they are fixed
 599               check_add_cflags -fno-strict-aliasing
 600           ;;
 601           *) check_add_cflags -Wunused-but-set-variable ;;
 602         esac
 603         if enabled mips || [ -z "${INLINE}" ]; then
 604           enabled extra_warnings || check_add_cflags -Wno-unused-function
 605         else
 606           check_add_cflags -Wunused-function
 607         fi
 608     fi
 609
 610     if enabled icc; then
 611         enabled werror && check_add_cflags -Werror
 612         check_add_cflags -Wall
 613         check_add_cflags -Wpointer-arith
 614
 615         # ICC has a number of floating point optimizations that we disable
 616         # in favor of deterministic output WRT to other compilers
 617         add_cflags -fp-model precise
 618     fi
 619
 620     # Enable extra, harmless warnings. These might provide additional insight
 621     # to what the compiler is doing and why, but in general, but they shouldn't
 622     # be treated as fatal, even if we're treating warnings as errors.
 623     GCC_EXTRA_WARNINGS="
 624         -Wdisabled-optimization
 625         -Winline
 626     "
 627     enabled gcc && EXTRA_WARNINGS="${GCC_EXTRA_WARNINGS}"
 628     RVCT_EXTRA_WARNINGS="
 629         --remarks
 630     "
 631     enabled rvct && EXTRA_WARNINGS="${RVCT_EXTRA_WARNINGS}"
 632     if enabled extra_warnings; then
 633         for w in ${EXTRA_WARNINGS}; do
 634             check_add_cflags ${w}
 635             enabled gcc && enabled werror && check_add_cflags -Wno-error=${w}
 636         done
 637     fi
 638
 639     # ccache only really works on gcc toolchains
 640     enabled gcc || soft_disable ccache
 641     if enabled mips; then
 642         enable_feature dequant_tokens
 643         enable_feature dc_recon
 644     fi
 645
 646     if enabled internal_stats; then
 647         enable_feature vp9_postproc
 648     fi
 649
 650     # Enable the postbuild target if building for visual studio.
 651     case "$tgt_cc" in
 652         vs*) enable_feature msvs
 653              enable_feature solution
 654              vs_version=${tgt_cc##vs}
 655              case $vs_version in
 656              [789])
 657                  VCPROJ_SFX=vcproj
 658                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_proj.sh
 659                  ;;
 660              10|11|12|14)
 661                  VCPROJ_SFX=vcxproj
 662                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_vcxproj.sh
 663                  enabled werror && gen_vcproj_cmd="${gen_vcproj_cmd} --enable-werror"
 664                  ;;
 665              esac
 666              all_targets="${all_targets} solution"
 667              INLINE="__forceinline"
 668         ;;
 669     esac
 670
 671     # Other toolchain specific defaults
 672     case $toolchain in x86*) soft_enable postproc;; esac
 673
 674     if enabled postproc_visualizer; then
 675         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
 676     fi
 677
 678     # Enable unit tests by default if we have a working C++ compiler.
 679     case "$toolchain" in
 680         *-vs*)
 681             soft_enable unit_tests
 682             soft_enable webm_io
 683             soft_enable libyuv
 684         ;;
 685         *-android-*)
 686             soft_enable webm_io
 687             soft_enable libyuv
 688             # GTestLog must be modified to use Android logging utilities.
 689         ;;
 690         *-darwin-*)
 691             # iOS/ARM builds do not work with gtest. This does not match
 692             # x86 targets.
 693         ;;
 694         *-iphonesimulator-*)
 695             soft_enable webm_io
 696             soft_enable libyuv
 697         ;;
 698         *-win*)
 699             # Some mingw toolchains don't have pthread available by default.
 700             # Treat these more like visual studio where threading in gtest
 701             # would be disabled for the same reason.
 702             check_cxx "$@" <<EOF && soft_enable unit_tests
 703 int z;
 704 EOF
 705             check_cxx "$@" <<EOF && soft_enable webm_io
 706 int z;
 707 EOF
 708             check_cxx "$@" <<EOF && soft_enable libyuv
 709 int z;
 710 EOF
 711         ;;
 712         *)
 713             enabled pthread_h && check_cxx "$@" <<EOF && soft_enable unit_tests
 714 int z;
 715 EOF
 716             check_cxx "$@" <<EOF && soft_enable webm_io
 717 int z;
 718 EOF
 719             check_cxx "$@" <<EOF && soft_enable libyuv
 720 int z;
 721 EOF
 722         ;;
 723     esac
 724     # libwebm needs to be linked with C++ standard library
 725     enabled webm_io && LD=${CXX}
 726
 727     # append any user defined extra cflags
 728     if [ -n "${extra_cflags}" ] ; then
 729         check_add_cflags ${extra_cflags} || \
 730         die "Requested extra CFLAGS '${extra_cflags}' not supported by compiler"
 731     fi
 732     if [ -n "${extra_cxxflags}" ]; then
 733         check_add_cxxflags ${extra_cxxflags} || \
 734         die "Requested extra CXXFLAGS '${extra_cxxflags}' not supported by compiler"
 735     fi
 736 }
 737
 738
 739 ##
 740 ## END APPLICATION SPECIFIC CONFIGURATION
 741 ##
 742 CONFIGURE_ARGS="$@"
 743 process "$@"
 744 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
 745 cat <<EOF >> ${BUILD_PFX}vpx_config.c
 746 #include "vpx/vpx_codec.h"
 747 static const char* const cfg = "$CONFIGURE_ARGS";
 748 const char *vpx_codec_build_config(void) {return cfg;}
 749 EOF