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   --libc=PATH                     path to alternate libc
  30   --size-limit=WxH                max size to allow in the decoder
  31   --as={yasm|nasm|auto}           use specified assembler [auto, yasm preferred]
  32   --sdk-path=PATH                 path to root of sdk (android builds only)
  33   ${toggle_fast_unaligned}        don't use unaligned accesses, even when
  34                                   supported by hardware [auto]
  35   ${toggle_codec_srcs}            in/exclude codec library source code
  36   ${toggle_debug_libs}            in/exclude debug version of libraries
  37   ${toggle_static_msvcrt}         use static MSVCRT (VS builds only)
  38   ${toggle_vp8}                   VP8 codec support
  39   ${toggle_vp9}                   VP9 codec support
  40   ${toggle_internal_stats}        output of encoder internal stats for debug, if supported (encoders)
  41   ${toggle_mem_tracker}           track memory usage
  42   ${toggle_postproc}              postprocessing
  43   ${toggle_vp9_postproc}          vp9 specific postprocessing
  44   ${toggle_multithread}           multithreaded encoding and decoding
  45   ${toggle_spatial_resampling}    spatial sampling (scaling) support
  46   ${toggle_realtime_only}         enable this option while building for real-time encoding
  47   ${toggle_onthefly_bitpacking}   enable on-the-fly bitpacking in real-time encoding
  48   ${toggle_error_concealment}     enable this option to get a decoder which is able to conceal losses
  49   ${toggle_coefficient_range_checking}
  50                                   enable decoder to check if intermediate
  51                                   transform coefficients are in valid range
  52   ${toggle_runtime_cpu_detect}    runtime cpu detection
  53   ${toggle_shared}                shared library support
  54   ${toggle_static}                static library support
  55   ${toggle_small}                 favor smaller size over speed
  56   ${toggle_postproc_visualizer}   macro block / block level visualizers
  57   ${toggle_multi_res_encoding}    enable multiple-resolution encoding
  58   ${toggle_temporal_denoising}    enable temporal denoising and disable the spatial denoiser
  59   ${toggle_webm_io}               enable input from and output to WebM container
  60   ${toggle_libyuv}                enable libyuv
  61
  62 Codecs:
  63   Codecs can be selectively enabled or disabled individually, or by family:
  64       --disable-<codec>
  65   is equivalent to:
  66       --disable-<codec>-encoder
  67       --disable-<codec>-decoder
  68
  69   Codecs available in this distribution:
  70 EOF
  71 #restore editor state '
  72
  73     family="";
  74     last_family="";
  75     c="";
  76     str="";
  77     for c in ${CODECS}; do
  78         family=${c%_*}
  79         if [ "${family}" != "${last_family}" ]; then
  80             [ -z "${str}" ] || echo "${str}"
  81             str="$(printf '    %10s:' ${family})"
  82         fi
  83         str="${str} $(printf '%10s' ${c#*_})"
  84         last_family=${family}
  85     done
  86     echo "${str}"
  87     show_help_post
  88 }
  89
  90 ##
  91 ## BEGIN APPLICATION SPECIFIC CONFIGURATION
  92 ##
  93
  94 # all_platforms is a list of all supported target platforms. Maintain
  95 # alphabetically by architecture, generic-gnu last.
  96 all_platforms="${all_platforms} armv5te-android-gcc"
  97 all_platforms="${all_platforms} armv5te-linux-rvct"
  98 all_platforms="${all_platforms} armv5te-linux-gcc"
  99 all_platforms="${all_platforms} armv5te-none-rvct"
 100 all_platforms="${all_platforms} armv6-darwin-gcc"
 101 all_platforms="${all_platforms} armv6-linux-rvct"
 102 all_platforms="${all_platforms} armv6-linux-gcc"
 103 all_platforms="${all_platforms} armv6-none-rvct"
 104 all_platforms="${all_platforms} arm64-darwin-gcc"
 105 all_platforms="${all_platforms} armv7-android-gcc"   #neon Cortex-A8
 106 all_platforms="${all_platforms} armv7-darwin-gcc"    #neon Cortex-A8
 107 all_platforms="${all_platforms} armv7-linux-rvct"    #neon Cortex-A8
 108 all_platforms="${all_platforms} armv7-linux-gcc"     #neon Cortex-A8
 109 all_platforms="${all_platforms} armv7-none-rvct"     #neon Cortex-A8
 110 all_platforms="${all_platforms} armv7-win32-vs11"
 111 all_platforms="${all_platforms} armv7-win32-vs12"
 112 all_platforms="${all_platforms} armv7s-darwin-gcc"
 113 all_platforms="${all_platforms} mips32-linux-gcc"
 114 all_platforms="${all_platforms} mips64-linux-gcc"
 115 all_platforms="${all_platforms} ppc32-darwin8-gcc"
 116 all_platforms="${all_platforms} ppc32-darwin9-gcc"
 117 all_platforms="${all_platforms} ppc32-linux-gcc"
 118 all_platforms="${all_platforms} ppc64-darwin8-gcc"
 119 all_platforms="${all_platforms} ppc64-darwin9-gcc"
 120 all_platforms="${all_platforms} ppc64-linux-gcc"
 121 all_platforms="${all_platforms} sparc-solaris-gcc"
 122 all_platforms="${all_platforms} x86-android-gcc"
 123 all_platforms="${all_platforms} x86-darwin8-gcc"
 124 all_platforms="${all_platforms} x86-darwin8-icc"
 125 all_platforms="${all_platforms} x86-darwin9-gcc"
 126 all_platforms="${all_platforms} x86-darwin9-icc"
 127 all_platforms="${all_platforms} x86-darwin10-gcc"
 128 all_platforms="${all_platforms} x86-darwin11-gcc"
 129 all_platforms="${all_platforms} x86-darwin12-gcc"
 130 all_platforms="${all_platforms} x86-darwin13-gcc"
 131 all_platforms="${all_platforms} x86-iphonesimulator-gcc"
 132 all_platforms="${all_platforms} x86-linux-gcc"
 133 all_platforms="${all_platforms} x86-linux-icc"
 134 all_platforms="${all_platforms} x86-os2-gcc"
 135 all_platforms="${all_platforms} x86-solaris-gcc"
 136 all_platforms="${all_platforms} x86-win32-gcc"
 137 all_platforms="${all_platforms} x86-win32-vs7"
 138 all_platforms="${all_platforms} x86-win32-vs8"
 139 all_platforms="${all_platforms} x86-win32-vs9"
 140 all_platforms="${all_platforms} x86-win32-vs10"
 141 all_platforms="${all_platforms} x86-win32-vs11"
 142 all_platforms="${all_platforms} x86-win32-vs12"
 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-iphonesimulator-gcc"
 149 all_platforms="${all_platforms} x86_64-linux-gcc"
 150 all_platforms="${all_platforms} x86_64-linux-icc"
 151 all_platforms="${all_platforms} x86_64-solaris-gcc"
 152 all_platforms="${all_platforms} x86_64-win64-gcc"
 153 all_platforms="${all_platforms} x86_64-win64-vs8"
 154 all_platforms="${all_platforms} x86_64-win64-vs9"
 155 all_platforms="${all_platforms} x86_64-win64-vs10"
 156 all_platforms="${all_platforms} x86_64-win64-vs11"
 157 all_platforms="${all_platforms} x86_64-win64-vs12"
 158 all_platforms="${all_platforms} universal-darwin8-gcc"
 159 all_platforms="${all_platforms} universal-darwin9-gcc"
 160 all_platforms="${all_platforms} universal-darwin10-gcc"
 161 all_platforms="${all_platforms} universal-darwin11-gcc"
 162 all_platforms="${all_platforms} universal-darwin12-gcc"
 163 all_platforms="${all_platforms} universal-darwin13-gcc"
 164 all_platforms="${all_platforms} generic-gnu"
 165
 166 # all_targets is a list of all targets that can be configured
 167 # note that these should be in dependency order for now.
 168 all_targets="libs examples docs"
 169
 170 # all targets available are enabled, by default.
 171 for t in ${all_targets}; do
 172     [ -f "${source_path}/${t}.mk" ] && enable_feature ${t}
 173 done
 174
 175 if ! perl --version >/dev/null; then
 176     die "Perl is required to build"
 177 fi
 178
 179
 180 if [ "`cd \"${source_path}\" && pwd`" != "`pwd`" ]; then
 181   # test to see if source_path already configured
 182   if [ -f "${source_path}/vpx_config.h" ]; then
 183     die "source directory already configured; run 'make distclean' there first"
 184   fi
 185 fi
 186
 187 # check installed doxygen version
 188 doxy_version=$(doxygen --version 2>/dev/null)
 189 doxy_major=${doxy_version%%.*}
 190 if [ ${doxy_major:-0} -ge 1 ]; then
 191     doxy_version=${doxy_version#*.}
 192     doxy_minor=${doxy_version%%.*}
 193     doxy_patch=${doxy_version##*.}
 194
 195     [ $doxy_major -gt 1 ] && enable_feature doxygen
 196     [ $doxy_minor -gt 5 ] && enable_feature doxygen
 197     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable_feature doxygen
 198 fi
 199
 200 # install everything except the sources, by default. sources will have
 201 # to be enabled when doing dist builds, since that's no longer a common
 202 # case.
 203 enabled doxygen && enable_feature install_docs
 204 enable_feature install_bins
 205 enable_feature install_libs
 206
 207 enable_feature static
 208 enable_feature optimizations
 209 enable_feature fast_unaligned #allow unaligned accesses, if supported by hw
 210 enable_feature spatial_resampling
 211 enable_feature multithread
 212 enable_feature os_support
 213 enable_feature temporal_denoising
 214
 215 [ -d "${source_path}/../include" ] && enable_feature alt_tree_layout
 216 for d in vp8 vp9; do
 217     [ -d "${source_path}/${d}" ] && disable_feature alt_tree_layout;
 218 done
 219
 220 if ! enabled alt_tree_layout; then
 221 # development environment
 222 [ -d "${source_path}/vp8" ] && CODECS="${CODECS} vp8_encoder vp8_decoder"
 223 [ -d "${source_path}/vp9" ] && CODECS="${CODECS} vp9_encoder vp9_decoder"
 224 else
 225 # customer environment
 226 [ -f "${source_path}/../include/vpx/vp8cx.h" ] && CODECS="${CODECS} vp8_encoder"
 227 [ -f "${source_path}/../include/vpx/vp8dx.h" ] && CODECS="${CODECS} vp8_decoder"
 228 [ -f "${source_path}/../include/vpx/vp9cx.h" ] && CODECS="${CODECS} vp9_encoder"
 229 [ -f "${source_path}/../include/vpx/vp9dx.h" ] && CODECS="${CODECS} vp9_decoder"
 230 [ -f "${source_path}/../include/vpx/vp8cx.h" ] || disable_feature vp8_encoder
 231 [ -f "${source_path}/../include/vpx/vp8dx.h" ] || disable_feature vp8_decoder
 232 [ -f "${source_path}/../include/vpx/vp9cx.h" ] || disable_feature vp9_encoder
 233 [ -f "${source_path}/../include/vpx/vp9dx.h" ] || disable_feature vp9_decoder
 234
 235 [ -f "${source_path}/../lib/*/*mt.lib" ] && soft_enable static_msvcrt
 236 fi
 237
 238 CODECS="$(echo ${CODECS} | tr ' ' '\n')"
 239 CODEC_FAMILIES="$(for c in ${CODECS}; do echo ${c%_*}; done | sort | uniq)"
 240
 241 ARCH_LIST="
 242     arm
 243     mips
 244     x86
 245     x86_64
 246     ppc32
 247     ppc64
 248 "
 249 ARCH_EXT_LIST="
 250     edsp
 251     media
 252     neon
 253     neon_asm
 254
 255     mips32
 256     dspr2
 257
 258     mips64
 259
 260     mmx
 261     sse
 262     sse2
 263     sse3
 264     ssse3
 265     sse4_1
 266     avx
 267     avx2
 268
 269     altivec
 270 "
 271 HAVE_LIST="
 272     ${ARCH_EXT_LIST}
 273     vpx_ports
 274     stdint_h
 275     alt_tree_layout
 276     pthread_h
 277     sys_mman_h
 278     unistd_h
 279 "
 280 EXPERIMENT_LIST="
 281     spatial_svc
 282     vp9_temporal_denoising
 283     fp_mb_stats
 284 "
 285 CONFIG_LIST="
 286     external_build
 287     install_docs
 288     install_bins
 289     install_libs
 290     install_srcs
 291     use_x86inc
 292     debug
 293     gprof
 294     gcov
 295     rvct
 296     gcc
 297     msvs
 298     pic
 299     big_endian
 300
 301     codec_srcs
 302     debug_libs
 303     fast_unaligned
 304     mem_manager
 305     mem_tracker
 306     mem_checks
 307
 308     dequant_tokens
 309     dc_recon
 310     runtime_cpu_detect
 311     postproc
 312     vp9_postproc
 313     multithread
 314     internal_stats
 315     ${CODECS}
 316     ${CODEC_FAMILIES}
 317     encoders
 318     decoders
 319     static_msvcrt
 320     spatial_resampling
 321     realtime_only
 322     onthefly_bitpacking
 323     error_concealment
 324     shared
 325     static
 326     small
 327     postproc_visualizer
 328     os_support
 329     unit_tests
 330     webm_io
 331     libyuv
 332     decode_perf_tests
 333     encode_perf_tests
 334     multi_res_encoding
 335     temporal_denoising
 336     coefficient_range_checking
 337     vp9_highbitdepth
 338     experimental
 339     size_limit
 340     ${EXPERIMENT_LIST}
 341 "
 342 CMDLINE_SELECT="
 343     external_build
 344     extra_warnings
 345     werror
 346     install_docs
 347     install_bins
 348     install_libs
 349     install_srcs
 350     debug
 351     gprof
 352     gcov
 353     pic
 354     use_x86inc
 355     optimizations
 356     ccache
 357     runtime_cpu_detect
 358     thumb
 359
 360     libs
 361     examples
 362     docs
 363     libc
 364     as
 365     size_limit
 366     fast_unaligned
 367     codec_srcs
 368     debug_libs
 369
 370     dequant_tokens
 371     dc_recon
 372     postproc
 373     vp9_postproc
 374     multithread
 375     internal_stats
 376     ${CODECS}
 377     ${CODEC_FAMILIES}
 378     static_msvcrt
 379     mem_tracker
 380     spatial_resampling
 381     realtime_only
 382     onthefly_bitpacking
 383     error_concealment
 384     shared
 385     static
 386     small
 387     postproc_visualizer
 388     unit_tests
 389     webm_io
 390     libyuv
 391     decode_perf_tests
 392     encode_perf_tests
 393     multi_res_encoding
 394     temporal_denoising
 395     coefficient_range_checking
 396     vp9_highbitdepth
 397     experimental
 398 "
 399
 400 process_cmdline() {
 401     for opt do
 402         optval="${opt#*=}"
 403         case "$opt" in
 404         --disable-codecs) for c in ${CODECS}; do disable_feature $c; done ;;
 405         --enable-?*|--disable-?*)
 406         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
 407         if echo "${EXPERIMENT_LIST}" | grep "^ *$option\$" >/dev/null; then
 408             if enabled experimental; then
 409                 ${action}_feature $option
 410             else
 411                 log_echo "Ignoring $opt -- not in experimental mode."
 412             fi
 413         else
 414             process_common_cmdline $opt
 415         fi
 416         ;;
 417         *) process_common_cmdline "$opt"
 418         ;;
 419         esac
 420     done
 421 }
 422
 423 post_process_cmdline() {
 424     c=""
 425
 426     # If the codec family is disabled, disable all components of that family.
 427     # If the codec family is enabled, enable all components of that family.
 428     log_echo "Configuring selected codecs"
 429     for c in ${CODECS}; do
 430         disabled ${c%%_*} && disable_feature ${c}
 431         enabled ${c%%_*} && enable_feature ${c}
 432     done
 433
 434     # Enable all detected codecs, if they haven't been disabled
 435     for c in ${CODECS}; do soft_enable $c; done
 436
 437     # Enable the codec family if any component of that family is enabled
 438     for c in ${CODECS}; do
 439         enabled $c && enable_feature ${c%_*}
 440     done
 441
 442     # Set the {en,de}coders variable if any algorithm in that class is enabled
 443     for c in ${CODECS}; do
 444         enabled ${c} && enable_feature ${c##*_}s
 445     done
 446 }
 447
 448
 449 process_targets() {
 450     enabled child || write_common_config_banner
 451     enabled universal || write_common_target_config_h  ${BUILD_PFX}vpx_config.h
 452
 453     # TODO: add host tools target (obj_int_extract, etc)
 454
 455     # For fat binaries, call configure recursively to configure for each
 456     # binary architecture to be included.
 457     if enabled universal; then
 458         # Call configure (ourselves) for each subarchitecture
 459         for arch in $fat_bin_archs; do
 460             BUILD_PFX=${arch}/ toolchain=${arch} $self --child $cmdline_args || exit $?
 461         done
 462     fi
 463
 464     # The write_common_config (config.mk) logic is deferred until after the
 465     # recursive calls to configure complete, because we want our universal
 466     # targets to be executed last.
 467     write_common_config_targets
 468     enabled universal && echo "FAT_ARCHS=${fat_bin_archs}" >> config.mk
 469
 470     # Calculate the default distribution name, based on the enabled features
 471     cf=""
 472     DIST_DIR=vpx
 473     for cf in $CODEC_FAMILIES; do
 474         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
 475             DIST_DIR="${DIST_DIR}-${cf}"
 476         elif enabled ${cf}_encoder; then
 477             DIST_DIR="${DIST_DIR}-${cf}cx"
 478         elif enabled ${cf}_decoder; then
 479             DIST_DIR="${DIST_DIR}-${cf}dx"
 480         fi
 481     done
 482     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
 483     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
 484     ! enabled postproc && ! enabled vp9_postproc && DIST_DIR="${DIST_DIR}-nopost"
 485     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
 486     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
 487     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
 488     case "${tgt_os}" in
 489     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
 490           DIST_DIR="${DIST_DIR}-${tgt_cc}"
 491           ;;
 492     esac
 493     if [ -f "${source_path}/build/make/version.sh" ]; then
 494         ver=`"$source_path/build/make/version.sh" --bare "$source_path"`
 495         DIST_DIR="${DIST_DIR}-${ver}"
 496         VERSION_STRING=${ver}
 497         ver=${ver%%-*}
 498         VERSION_PATCH=${ver##*.}
 499         ver=${ver%.*}
 500         VERSION_MINOR=${ver##*.}
 501         ver=${ver#v}
 502         VERSION_MAJOR=${ver%.*}
 503     fi
 504     enabled child || cat <<EOF >> config.mk
 505
 506 PREFIX=${prefix}
 507 ifeq (\$(MAKECMDGOALS),dist)
 508 DIST_DIR?=${DIST_DIR}
 509 else
 510 DIST_DIR?=\$(DESTDIR)${prefix}
 511 endif
 512 LIBSUBDIR=${libdir##${prefix}/}
 513
 514 VERSION_STRING=${VERSION_STRING}
 515
 516 VERSION_MAJOR=${VERSION_MAJOR}
 517 VERSION_MINOR=${VERSION_MINOR}
 518 VERSION_PATCH=${VERSION_PATCH}
 519
 520 CONFIGURE_ARGS=${CONFIGURE_ARGS}
 521 EOF
 522     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
 523
 524     #
 525     # Write makefiles for all enabled targets
 526     #
 527     for tgt in libs examples docs solution; do
 528         tgt_fn="$tgt-$toolchain.mk"
 529
 530         if enabled $tgt; then
 531             echo "Creating makefiles for ${toolchain} ${tgt}"
 532             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
 533             #write_${tgt}_config
 534         fi
 535     done
 536
 537 }
 538
 539 process_detect() {
 540     if enabled shared; then
 541         # Can only build shared libs on a subset of platforms. Doing this check
 542         # here rather than at option parse time because the target auto-detect
 543         # magic happens after the command line has been parsed.
 544         if ! enabled linux; then
 545             if enabled gnu; then
 546                 echo "--enable-shared is only supported on ELF; assuming this is OK"
 547             else
 548                 die "--enable-shared only supported on ELF for now"
 549             fi
 550         fi
 551     fi
 552     if [ -z "$CC" ] || enabled external_build; then
 553         echo "Bypassing toolchain for environment detection."
 554         enable_feature external_build
 555         check_header() {
 556             log fake_check_header "$@"
 557             header=$1
 558             shift
 559             var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
 560             disable_feature $var
 561             # Headers common to all environments
 562             case $header in
 563                 stdio.h)
 564                     true;
 565                 ;;
 566                 *)
 567                     result=false
 568                     for d in "$@"; do
 569                         [ -f "${d##-I}/$header" ] && result=true && break
 570                     done
 571                     ${result:-true}
 572             esac && enable_feature $var
 573
 574             # Specialize windows and POSIX environments.
 575             case $toolchain in
 576                 *-win*-*)
 577                     case $header-$toolchain in
 578                         stdint*-gcc) true;;
 579                         *) false;;
 580                     esac && enable_feature $var
 581                     ;;
 582                 *)
 583                     case $header in
 584                         stdint.h) true;;
 585                         pthread.h) true;;
 586                         sys/mman.h) true;;
 587                         unistd.h) true;;
 588                         *) false;;
 589                     esac && enable_feature $var
 590             esac
 591             enabled $var
 592         }
 593         check_ld() {
 594             true
 595         }
 596     fi
 597     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
 598     check_ld <<EOF || die "Toolchain is unable to link executables"
 599 int main(void) {return 0;}
 600 EOF
 601     # check system headers
 602     check_header stdint.h
 603     check_header pthread.h
 604     check_header sys/mman.h
 605     check_header unistd.h # for sysconf(3) and friends.
 606
 607     check_header vpx/vpx_integer.h -I${source_path} && enable_feature vpx_ports
 608 }
 609
 610 process_toolchain() {
 611     process_common_toolchain
 612
 613     # Handle universal binaries for this architecture
 614     case $toolchain in
 615         universal-darwin*)
 616             darwin_ver=${tgt_os##darwin}
 617
 618             # Snow Leopard (10.6/darwin10) dropped support for PPC
 619             # Include PPC support for all prior versions
 620             if [ $darwin_ver -lt 10 ]; then
 621                 fat_bin_archs="$fat_bin_archs ppc32-${tgt_os}-gcc"
 622             fi
 623
 624             # Tiger (10.4/darwin8) brought support for x86
 625             if [ $darwin_ver -ge 8 ]; then
 626                 fat_bin_archs="$fat_bin_archs x86-${tgt_os}-${tgt_cc}"
 627             fi
 628
 629             # Leopard (10.5/darwin9) brought 64 bit support
 630             if [ $darwin_ver -ge 9 ]; then
 631                 fat_bin_archs="$fat_bin_archs x86_64-${tgt_os}-${tgt_cc}"
 632             fi
 633             ;;
 634     esac
 635
 636
 637     # Enable some useful compiler flags
 638     if enabled gcc; then
 639         enabled werror && check_add_cflags -Werror
 640         check_add_cflags -Wall
 641         check_add_cflags -Wdeclaration-after-statement
 642         check_add_cflags -Wdisabled-optimization
 643         check_add_cflags -Wpointer-arith
 644         check_add_cflags -Wtype-limits
 645         check_add_cflags -Wcast-qual
 646         check_add_cflags -Wvla
 647         check_add_cflags -Wimplicit-function-declaration
 648         check_add_cflags -Wuninitialized
 649         check_add_cflags -Wunused-variable
 650         case ${CC} in
 651           *clang*)
 652               # libvpx and/or clang have issues with aliasing:
 653               # https://code.google.com/p/webm/issues/detail?id=603
 654               # work around them until they are fixed
 655               check_add_cflags -fno-strict-aliasing
 656           ;;
 657           *) check_add_cflags -Wunused-but-set-variable ;;
 658         esac
 659         enabled extra_warnings || check_add_cflags -Wno-unused-function
 660     fi
 661
 662     if enabled icc; then
 663         enabled werror && check_add_cflags -Werror
 664         check_add_cflags -Wall
 665         check_add_cflags -Wpointer-arith
 666
 667         # ICC has a number of floating point optimizations that we disable
 668         # in favor of deterministic output WRT to other compilers
 669         add_cflags -fp-model precise
 670     fi
 671
 672     # Enable extra, harmless warnings. These might provide additional insight
 673     # to what the compiler is doing and why, but in general, but they shouldn't
 674     # be treated as fatal, even if we're treating warnings as errors.
 675     GCC_EXTRA_WARNINGS="
 676         -Wdisabled-optimization
 677         -Winline
 678     "
 679     enabled gcc && EXTRA_WARNINGS="${GCC_EXTRA_WARNINGS}"
 680     RVCT_EXTRA_WARNINGS="
 681         --remarks
 682     "
 683     enabled rvct && EXTRA_WARNINGS="${RVCT_EXTRA_WARNINGS}"
 684     if enabled extra_warnings; then
 685         for w in ${EXTRA_WARNINGS}; do
 686             check_add_cflags ${w}
 687             enabled gcc && enabled werror && check_add_cflags -Wno-error=${w}
 688         done
 689     fi
 690
 691     # ccache only really works on gcc toolchains
 692     enabled gcc || soft_disable ccache
 693     if enabled mips; then
 694         enable_feature dequant_tokens
 695         enable_feature dc_recon
 696     fi
 697
 698     if enabled internal_stats; then
 699         enable_feature vp9_postproc
 700     fi
 701
 702     # Enable the postbuild target if building for visual studio.
 703     case "$tgt_cc" in
 704         vs*) enable_feature msvs
 705              enable_feature solution
 706              vs_version=${tgt_cc##vs}
 707              case $vs_version in
 708              [789])
 709                  VCPROJ_SFX=vcproj
 710                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_proj.sh
 711                  ;;
 712              10|11|12)
 713                  VCPROJ_SFX=vcxproj
 714                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_vcxproj.sh
 715                  enabled werror && gen_vcproj_cmd="${gen_vcproj_cmd} --enable-werror"
 716                  ;;
 717              esac
 718              all_targets="${all_targets} solution"
 719              INLINE="__forceinline"
 720         ;;
 721     esac
 722
 723     # Other toolchain specific defaults
 724     case $toolchain in x86*|ppc*|universal*) soft_enable postproc;; esac
 725
 726     if enabled postproc_visualizer; then
 727         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
 728     fi
 729
 730     # Enable unit tests by default if we have a working C++ compiler.
 731     case "$toolchain" in
 732         *-vs*)
 733             soft_enable unit_tests
 734             soft_enable webm_io
 735             soft_enable libyuv
 736         ;;
 737         *-android-*)
 738             soft_enable webm_io
 739             soft_enable libyuv
 740             # GTestLog must be modified to use Android logging utilities.
 741         ;;
 742         *-darwin-*)
 743             # iOS/ARM builds do not work with gtest. This does not match
 744             # x86 targets.
 745         ;;
 746         *-iphonesimulator-*)
 747             soft_enable webm_io
 748             soft_enable libyuv
 749         ;;
 750         *-win*)
 751             # Some mingw toolchains don't have pthread available by default.
 752             # Treat these more like visual studio where threading in gtest
 753             # would be disabled for the same reason.
 754             check_cxx "$@" <<EOF && soft_enable unit_tests
 755 int z;
 756 EOF
 757             check_cxx "$@" <<EOF && soft_enable webm_io
 758 int z;
 759 EOF
 760             check_cxx "$@" <<EOF && soft_enable libyuv
 761 int z;
 762 EOF
 763         ;;
 764         *)
 765             enabled pthread_h && check_cxx "$@" <<EOF && soft_enable unit_tests
 766 int z;
 767 EOF
 768             check_cxx "$@" <<EOF && soft_enable webm_io
 769 int z;
 770 EOF
 771             check_cxx "$@" <<EOF && soft_enable libyuv
 772 int z;
 773 EOF
 774         ;;
 775     esac
 776     # libwebm needs to be linked with C++ standard library
 777     enabled webm_io && LD=${CXX}
 778 }
 779
 780
 781 ##
 782 ## END APPLICATION SPECIFIC CONFIGURATION
 783 ##
 784 CONFIGURE_ARGS="$@"
 785 process "$@"
 786 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
 787 cat <<EOF >> ${BUILD_PFX}vpx_config.c
 788 static const char* const cfg = "$CONFIGURE_ARGS";
 789 const char *vpx_codec_build_config(void) {return cfg;}
 790 EOF