configure

   1 #!/bin/bash
   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   --libc=PATH                     path to alternate libc
  28   --as={yasm|nasm|auto}           use specified assembler [auto, yasm preferred]
  29   --sdk-path=PATH                 path to root of sdk (iOS, android builds only)
  30   ${toggle_fast_unaligned}        don't use unaligned accesses, even when
  31                                   supported by hardware [auto]
  32   ${toggle_codec_srcs}            in/exclude codec library source code
  33   ${toggle_debug_libs}            in/exclude debug version of libraries
  34   ${toggle_md5}                   support for output of checksum data
  35   ${toggle_static_msvcrt}         use static MSVCRT (VS builds only)
  36   ${toggle_vp8}                   VP8 codec support
  37   ${toggle_vp9}                   VP9 codec support
  38   ${toggle_internal_stats}        output of encoder internal stats for debug, if supported (encoders)
  39   ${toggle_mem_tracker}           track memory usage
  40   ${toggle_postproc}              postprocessing
  41   ${toggle_multithread}           multithreaded encoding and decoding
  42   ${toggle_spatial_resampling}    spatial sampling (scaling) support
  43   ${toggle_realtime_only}         enable this option while building for real-time encoding
  44   ${toggle_onthefly_bitpacking}   enable on-the-fly bitpacking in real-time encoding
  45   ${toggle_error_concealment}     enable this option to get a decoder which is able to conceal losses
  46   ${toggle_runtime_cpu_detect}    runtime cpu detection
  47   ${toggle_shared}                shared library support
  48   ${toggle_static}                static library support
  49   ${toggle_small}                 favor smaller size over speed
  50   ${toggle_postproc_visualizer}   macro block / block level visualizers
  51   ${toggle_multi_res_encoding}    enable multiple-resolution encoding
  52   ${toggle_temporal_denoising}    enable temporal denoising and disable the spatial denoiser
  53
  54 Codecs:
  55   Codecs can be selectively enabled or disabled individually, or by family:
  56       --disable-<codec>
  57   is equivalent to:
  58       --disable-<codec>-encoder
  59       --disable-<codec>-decoder
  60
  61   Codecs available in this distribution:
  62 EOF
  63 #restore editor state '
  64
  65     local family;
  66     local last_family;
  67     local c;
  68     local str;
  69     for c in ${CODECS}; do
  70         family=${c%_*}
  71         if [ "${family}" != "${last_family}" ]; then
  72             [ -z "${str}" ] || echo "${str}"
  73             str="$(printf '    %10s:' ${family})"
  74         fi
  75         str="${str} $(printf '%10s' ${c#*_})"
  76         last_family=${family}
  77     done
  78     echo "${str}"
  79     show_help_post
  80 }
  81
  82 ##
  83 ## BEGIN APPLICATION SPECIFIC CONFIGURATION
  84 ##
  85
  86 # all_platforms is a list of all supported target platforms. Maintain
  87 # alphabetically by architecture, generic-gnu last.
  88 all_platforms="${all_platforms} armv5te-android-gcc"
  89 all_platforms="${all_platforms} armv5te-linux-rvct"
  90 all_platforms="${all_platforms} armv5te-linux-gcc"
  91 all_platforms="${all_platforms} armv5te-none-rvct"
  92 all_platforms="${all_platforms} armv6-darwin-gcc"
  93 all_platforms="${all_platforms} armv6-linux-rvct"
  94 all_platforms="${all_platforms} armv6-linux-gcc"
  95 all_platforms="${all_platforms} armv6-none-rvct"
  96 all_platforms="${all_platforms} armv7-android-gcc"   #neon Cortex-A8
  97 all_platforms="${all_platforms} armv7-darwin-gcc"    #neon Cortex-A8
  98 all_platforms="${all_platforms} armv7-linux-rvct"    #neon Cortex-A8
  99 all_platforms="${all_platforms} armv7-linux-gcc"     #neon Cortex-A8
 100 all_platforms="${all_platforms} armv7-none-rvct"     #neon Cortex-A8
 101 all_platforms="${all_platforms} mips32-linux-gcc"
 102 all_platforms="${all_platforms} ppc32-darwin8-gcc"
 103 all_platforms="${all_platforms} ppc32-darwin9-gcc"
 104 all_platforms="${all_platforms} ppc32-linux-gcc"
 105 all_platforms="${all_platforms} ppc64-darwin8-gcc"
 106 all_platforms="${all_platforms} ppc64-darwin9-gcc"
 107 all_platforms="${all_platforms} ppc64-linux-gcc"
 108 all_platforms="${all_platforms} sparc-solaris-gcc"
 109 all_platforms="${all_platforms} x86-android-gcc"
 110 all_platforms="${all_platforms} x86-darwin8-gcc"
 111 all_platforms="${all_platforms} x86-darwin8-icc"
 112 all_platforms="${all_platforms} x86-darwin9-gcc"
 113 all_platforms="${all_platforms} x86-darwin9-icc"
 114 all_platforms="${all_platforms} x86-darwin10-gcc"
 115 all_platforms="${all_platforms} x86-darwin11-gcc"
 116 all_platforms="${all_platforms} x86-darwin12-gcc"
 117 all_platforms="${all_platforms} x86-linux-gcc"
 118 all_platforms="${all_platforms} x86-linux-icc"
 119 all_platforms="${all_platforms} x86-os2-gcc"
 120 all_platforms="${all_platforms} x86-solaris-gcc"
 121 all_platforms="${all_platforms} x86-win32-gcc"
 122 all_platforms="${all_platforms} x86-win32-vs7"
 123 all_platforms="${all_platforms} x86-win32-vs8"
 124 all_platforms="${all_platforms} x86-win32-vs9"
 125 all_platforms="${all_platforms} x86_64-darwin9-gcc"
 126 all_platforms="${all_platforms} x86_64-darwin10-gcc"
 127 all_platforms="${all_platforms} x86_64-darwin11-gcc"
 128 all_platforms="${all_platforms} x86_64-darwin12-gcc"
 129 all_platforms="${all_platforms} x86_64-linux-gcc"
 130 all_platforms="${all_platforms} x86_64-linux-icc"
 131 all_platforms="${all_platforms} x86_64-solaris-gcc"
 132 all_platforms="${all_platforms} x86_64-win64-gcc"
 133 all_platforms="${all_platforms} x86_64-win64-vs8"
 134 all_platforms="${all_platforms} x86_64-win64-vs9"
 135 all_platforms="${all_platforms} universal-darwin8-gcc"
 136 all_platforms="${all_platforms} universal-darwin9-gcc"
 137 all_platforms="${all_platforms} universal-darwin10-gcc"
 138 all_platforms="${all_platforms} universal-darwin11-gcc"
 139 all_platforms="${all_platforms} universal-darwin12-gcc"
 140 all_platforms="${all_platforms} generic-gnu"
 141
 142 # all_targets is a list of all targets that can be configured
 143 # note that these should be in dependency order for now.
 144 all_targets="libs examples docs"
 145
 146 # all targets available are enabled, by default.
 147 for t in ${all_targets}; do
 148     [ -f ${source_path}/${t}.mk ] && enable ${t}
 149 done
 150
 151 # check installed doxygen version
 152 doxy_version=$(doxygen --version 2>/dev/null)
 153 doxy_major=${doxy_version%%.*}
 154 if [ ${doxy_major:-0} -ge 1 ]; then
 155     doxy_version=${doxy_version#*.}
 156     doxy_minor=${doxy_version%%.*}
 157     doxy_patch=${doxy_version##*.}
 158
 159     [ $doxy_major -gt 1 ] && enable doxygen
 160     [ $doxy_minor -gt 5 ] && enable doxygen
 161     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable doxygen
 162 fi
 163
 164 # install everything except the sources, by default. sources will have
 165 # to be enabled when doing dist builds, since that's no longer a common
 166 # case.
 167 enabled doxygen && php -v >/dev/null 2>&1 && enable install_docs
 168 enable install_bins
 169 enable install_libs
 170
 171 enable static
 172 enable optimizations
 173 enable fast_unaligned #allow unaligned accesses, if supported by hw
 174 enable md5
 175 enable spatial_resampling
 176 enable multithread
 177 enable os_support
 178 enable temporal_denoising
 179
 180 [ -d ${source_path}/../include ] && enable alt_tree_layout
 181 for d in vp8 vp9; do
 182     [ -d ${source_path}/${d} ] && disable alt_tree_layout;
 183 done
 184
 185 if ! enabled alt_tree_layout; then
 186 # development environment
 187 [ -d ${source_path}/vp8 ] && CODECS="${CODECS} vp8_encoder vp8_decoder"
 188 [ -d ${source_path}/vp9 ] && CODECS="${CODECS} vp9_encoder vp9_decoder"
 189 else
 190 # customer environment
 191 [ -f ${source_path}/../include/vpx/vp8cx.h ] && CODECS="${CODECS} vp8_encoder"
 192 [ -f ${source_path}/../include/vpx/vp8dx.h ] && CODECS="${CODECS} vp8_decoder"
 193 [ -f ${source_path}/../include/vpx/vp9cx.h ] && CODECS="${CODECS} vp9_encoder"
 194 [ -f ${source_path}/../include/vpx/vp9dx.h ] && CODECS="${CODECS} vp9_decoder"
 195 [ -f ${source_path}/../include/vpx/vp8cx.h ] || disable vp8_encoder
 196 [ -f ${source_path}/../include/vpx/vp8dx.h ] || disable vp8_decoder
 197 [ -f ${source_path}/../include/vpx/vp9cx.h ] || disable vp9_encoder
 198 [ -f ${source_path}/../include/vpx/vp9dx.h ] || disable vp9_decoder
 199
 200 [ -f ${source_path}/../lib/*/*mt.lib ] && soft_enable static_msvcrt
 201 fi
 202
 203 CODECS="$(echo ${CODECS} | tr ' ' '\n')"
 204 CODEC_FAMILIES="$(for c in ${CODECS}; do echo ${c%_*}; done | sort | uniq)"
 205
 206 ARCH_LIST="
 207     arm
 208     mips
 209     x86
 210     x86_64
 211     ppc32
 212     ppc64
 213 "
 214 ARCH_EXT_LIST="
 215     edsp
 216     media
 217     neon
 218
 219     mips32
 220     dspr2
 221
 222     mmx
 223     sse
 224     sse2
 225     sse3
 226     ssse3
 227     sse4_1
 228
 229     altivec
 230 "
 231 HAVE_LIST="
 232     ${ARCH_EXT_LIST}
 233     vpx_ports
 234     stdint_h
 235     alt_tree_layout
 236     pthread_h
 237     sys_mman_h
 238     unistd_h
 239 "
 240 EXPERIMENT_LIST="
 241     csm
 242     new_mvref
 243     implicit_segmentation
 244     newbintramodes
 245     comp_interintra_pred
 246     enable_6tap
 247     abovesprefmv
 248     code_nonzerocount
 249     useselectrefmv
 250     modelcoefprob
 251     loop_dering
 252     implicit_compoundinter_weight
 253     scatterscan
 254     oneshotq
 255     sbsegment
 256     multiple_arf
 257 "
 258 CONFIG_LIST="
 259     external_build
 260     install_docs
 261     install_bins
 262     install_libs
 263     install_srcs
 264     debug
 265     gprof
 266     gcov
 267     rvct
 268     gcc
 269     msvs
 270     pic
 271     big_endian
 272
 273     codec_srcs
 274     debug_libs
 275     fast_unaligned
 276     mem_manager
 277     mem_tracker
 278     mem_checks
 279     md5
 280
 281     dequant_tokens
 282     dc_recon
 283     runtime_cpu_detect
 284     postproc
 285     multithread
 286     internal_stats
 287     ${CODECS}
 288     ${CODEC_FAMILIES}
 289     encoders
 290     decoders
 291     static_msvcrt
 292     spatial_resampling
 293     realtime_only
 294     onthefly_bitpacking
 295     error_concealment
 296     shared
 297     static
 298     small
 299     postproc_visualizer
 300     os_support
 301     unit_tests
 302     multi_res_encoding
 303     temporal_denoising
 304     experimental
 305     decrypt
 306     ${EXPERIMENT_LIST}
 307 "
 308 CMDLINE_SELECT="
 309     external_build
 310     extra_warnings
 311     werror
 312     install_docs
 313     install_bins
 314     install_libs
 315     install_srcs
 316     debug
 317     gprof
 318     gcov
 319     pic
 320     optimizations
 321     ccache
 322     runtime_cpu_detect
 323
 324     libs
 325     examples
 326     docs
 327     libc
 328     as
 329     fast_unaligned
 330     codec_srcs
 331     debug_libs
 332     md5
 333
 334     dequant_tokens
 335     dc_recon
 336     postproc
 337     multithread
 338     internal_stats
 339     ${CODECS}
 340     ${CODEC_FAMILIES}
 341     static_msvcrt
 342     mem_tracker
 343     spatial_resampling
 344     realtime_only
 345     onthefly_bitpacking
 346     error_concealment
 347     shared
 348     static
 349     small
 350     postproc_visualizer
 351     unit_tests
 352     multi_res_encoding
 353     temporal_denoising
 354     experimental
 355     decrypt
 356 "
 357
 358 process_cmdline() {
 359     for opt do
 360         optval="${opt#*=}"
 361         case "$opt" in
 362         --disable-codecs) for c in ${CODECS}; do disable $c; done ;;
 363         --enable-?*|--disable-?*)
 364         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
 365         if echo "${EXPERIMENT_LIST}" | grep "^ *$option\$" >/dev/null; then
 366             if enabled experimental; then
 367                 $action $option
 368             else
 369                 log_echo "Ignoring $opt -- not in experimental mode."
 370             fi
 371         else
 372             process_common_cmdline $opt
 373         fi
 374         ;;
 375         *) process_common_cmdline "$opt"
 376         ;;
 377         esac
 378     done
 379 }
 380
 381 post_process_cmdline() {
 382     local c
 383
 384     # If the codec family is disabled, disable all components of that family.
 385     # If the codec family is enabled, enable all components of that family.
 386     log_echo "Configuring selected codecs"
 387     for c in ${CODECS}; do
 388         disabled ${c%%_*} && disable ${c}
 389         enabled ${c%%_*} && enable ${c}
 390     done
 391
 392     # Enable all detected codecs, if they haven't been disabled
 393     for c in ${CODECS}; do soft_enable $c; done
 394
 395     # Enable the codec family if any component of that family is enabled
 396     for c in ${CODECS}; do
 397         enabled $c && enable ${c%_*}
 398     done
 399
 400     # Set the {en,de}coders variable if any algorithm in that class is enabled
 401     for c in ${CODECS}; do
 402         enabled ${c} && enable ${c##*_}s
 403     done
 404 }
 405
 406
 407 process_targets() {
 408     enabled child || write_common_config_banner
 409     enabled universal || write_common_target_config_h  ${BUILD_PFX}vpx_config.h
 410
 411     # TODO: add host tools target (obj_int_extract, etc)
 412
 413     # For fat binaries, call configure recursively to configure for each
 414     # binary architecture to be included.
 415     if enabled universal; then
 416         # Call configure (ourselves) for each subarchitecture
 417         for arch in $fat_bin_archs; do
 418             BUILD_PFX=${arch}/ toolchain=${arch} $self --child $cmdline_args || exit $?
 419         done
 420     fi
 421
 422     # The write_common_config (config.mk) logic is deferred until after the
 423     # recursive calls to configure complete, becuase we want our universal
 424     # targets to be executed last.
 425     write_common_config_targets
 426     enabled universal && echo "FAT_ARCHS=${fat_bin_archs}" >> config.mk
 427
 428     # Calculate the default distribution name, based on the enabled features
 429     local cf
 430     local DIST_DIR=vpx
 431     for cf in $CODEC_FAMILIES; do
 432         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
 433             DIST_DIR="${DIST_DIR}-${cf}"
 434         elif enabled ${cf}_encoder; then
 435             DIST_DIR="${DIST_DIR}-${cf}cx"
 436         elif enabled ${cf}_decoder; then
 437             DIST_DIR="${DIST_DIR}-${cf}dx"
 438         fi
 439     done
 440     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
 441     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
 442     ! enabled postproc && DIST_DIR="${DIST_DIR}-nopost"
 443     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
 444     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
 445     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
 446     case "${tgt_os}" in
 447     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
 448           DIST_DIR="${DIST_DIR}-${tgt_cc}"
 449           ;;
 450     esac
 451     if [ -f "${source_path}/build/make/version.sh" ]; then
 452         local ver=`"$source_path/build/make/version.sh" --bare $source_path`
 453         DIST_DIR="${DIST_DIR}-${ver}"
 454         VERSION_STRING=${ver}
 455         ver=${ver%%-*}
 456         VERSION_PATCH=${ver##*.}
 457         ver=${ver%.*}
 458         VERSION_MINOR=${ver##*.}
 459         ver=${ver#v}
 460         VERSION_MAJOR=${ver%.*}
 461     fi
 462     enabled child || cat <<EOF >> config.mk
 463
 464 PREFIX=${prefix}
 465 ifeq (\$(MAKECMDGOALS),dist)
 466 DIST_DIR?=${DIST_DIR}
 467 else
 468 DIST_DIR?=\$(DESTDIR)${prefix}
 469 endif
 470 LIBSUBDIR=${libdir##${prefix}/}
 471
 472 VERSION_STRING=${VERSION_STRING}
 473
 474 VERSION_MAJOR=${VERSION_MAJOR}
 475 VERSION_MINOR=${VERSION_MINOR}
 476 VERSION_PATCH=${VERSION_PATCH}
 477
 478 CONFIGURE_ARGS=${CONFIGURE_ARGS}
 479 EOF
 480     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
 481
 482     #
 483     # Write makefiles for all enabled targets
 484     #
 485     for tgt in libs examples docs solution; do
 486         local tgt_fn="$tgt-$toolchain.mk"
 487
 488         if enabled $tgt; then
 489             echo "Creating makefiles for ${toolchain} ${tgt}"
 490             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
 491             #write_${tgt}_config
 492         fi
 493     done
 494
 495 }
 496
 497 process_detect() {
 498     if enabled shared; then
 499         # Can only build shared libs on a subset of platforms. Doing this check
 500         # here rather than at option parse time because the target auto-detect
 501         # magic happens after the command line has been parsed.
 502         if ! enabled linux; then
 503             if enabled gnu; then
 504                 echo "--enable-shared is only supported on ELF; assuming this is OK"
 505             else
 506                 die "--enable-shared only supported on ELF for now"
 507             fi
 508         fi
 509     fi
 510     if [ -z "$CC" ] || enabled external_build; then
 511         echo "Bypassing toolchain for environment detection."
 512         enable external_build
 513         check_header() {
 514             log fake_check_header "$@"
 515             header=$1
 516             shift
 517             var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
 518             disable $var
 519             # Headers common to all environments
 520             case $header in
 521                 stdio.h)
 522                     true;
 523                 ;;
 524                 *)
 525                     local result=false
 526                     for d in "$@"; do
 527                         [ -f "${d##-I}/$header" ] && result=true && break
 528                     done
 529                     ${result:-true}
 530             esac && enable $var
 531
 532             # Specialize windows and POSIX environments.
 533             case $toolchain in
 534                 *-win*-*)
 535                     case $header-$toolchain in
 536                         stdint*-gcc) true;;
 537                         *) false;;
 538                     esac && enable $var
 539                     ;;
 540                 *)
 541                     case $header in
 542                         stdint.h) true;;
 543                         pthread.h) true;;
 544                         sys/mman.h) true;;
 545                         unistd.h) true;;
 546                         *) false;;
 547                     esac && enable $var
 548             esac
 549             enabled $var
 550         }
 551         check_ld() {
 552             true
 553         }
 554     fi
 555     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
 556     check_ld <<EOF || die "Toolchain is unable to link executables"
 557 int main(void) {return 0;}
 558 EOF
 559     # check system headers
 560     check_header stdint.h
 561     check_header pthread.h
 562     check_header sys/mman.h
 563     check_header unistd.h # for sysconf(3) and friends.
 564
 565     check_header vpx/vpx_integer.h -I${source_path} && enable vpx_ports
 566 }
 567
 568 process_toolchain() {
 569     process_common_toolchain
 570
 571     # Handle universal binaries for this architecture
 572     case $toolchain in
 573         universal-darwin*)
 574             local darwin_ver=${tgt_os##darwin}
 575
 576             # Snow Leopard (10.6/darwin10) dropped support for PPC
 577             # Include PPC support for all prior versions
 578             if [ $darwin_ver -lt 10 ]; then
 579                 fat_bin_archs="$fat_bin_archs ppc32-${tgt_os}-gcc"
 580             fi
 581
 582             # Tiger (10.4/darwin8) brought support for x86
 583             if [ $darwin_ver -ge 8 ]; then
 584                 fat_bin_archs="$fat_bin_archs x86-${tgt_os}-${tgt_cc}"
 585             fi
 586
 587             # Leopard (10.5/darwin9) brought 64 bit support
 588             if [ $darwin_ver -ge 9 ]; then
 589                 fat_bin_archs="$fat_bin_archs x86_64-${tgt_os}-${tgt_cc}"
 590             fi
 591             ;;
 592     esac
 593
 594
 595     # Enable some useful compiler flags
 596     if enabled gcc; then
 597         enabled werror && check_add_cflags -Werror
 598         check_add_cflags -Wall
 599         check_add_cflags -Wdeclaration-after-statement
 600         check_add_cflags -Wdisabled-optimization
 601         check_add_cflags -Wpointer-arith
 602         check_add_cflags -Wtype-limits
 603         check_add_cflags -Wcast-qual
 604         check_add_cflags -Wvla
 605         check_add_cflags -Wimplicit-function-declaration
 606         check_add_cflags -Wuninitialized
 607         check_add_cflags -Wunused-variable
 608         check_add_cflags -Wunused-but-set-variable
 609         enabled extra_warnings || check_add_cflags -Wno-unused-function
 610     fi
 611
 612     if enabled icc; then
 613         enabled werror && check_add_cflags -Werror
 614         check_add_cflags -Wall
 615         check_add_cflags -Wpointer-arith
 616
 617         # ICC has a number of floating point optimizations that we disable
 618         # in favor of deterministic output WRT to other compilers
 619         add_cflags -fp-model precise
 620     fi
 621
 622     # Enable extra, harmless warnings. These might provide additional insight
 623     # to what the compiler is doing and why, but in general, but they shouldn't
 624     # be treated as fatal, even if we're treating warnings as errors.
 625     GCC_EXTRA_WARNINGS="
 626         -Wdisabled-optimization
 627         -Winline
 628     "
 629     enabled gcc && EXTRA_WARNINGS="${GCC_EXTRA_WARNINGS}"
 630     RVCT_EXTRA_WARNINGS="
 631         --remarks
 632     "
 633     enabled rvct && EXTRA_WARNINGS="${RVCT_EXTRA_WARNINGS}"
 634     if enabled extra_warnings; then
 635         for w in ${EXTRA_WARNINGS}; do
 636             check_add_cflags ${w}
 637             enabled gcc && enabled werror && check_add_cflags -Wno-error=${w}
 638         done
 639     fi
 640
 641     # ccache only really works on gcc toolchains
 642     enabled gcc || soft_disable ccache
 643     if enabled mips; then
 644         enable dequant_tokens
 645         enable dc_recon
 646     fi
 647
 648     # Enable the postbuild target if building for visual studio.
 649     case "$tgt_cc" in
 650         vs*) enable msvs
 651              enable solution
 652              vs_version=${tgt_cc##vs}
 653              all_targets="${all_targets} solution"
 654              INLINE="__forceinline"
 655         ;;
 656     esac
 657
 658     # Other toolchain specific defaults
 659     case $toolchain in x86*|ppc*|universal*) soft_enable postproc;; esac
 660
 661     if enabled postproc_visualizer; then
 662         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
 663     fi
 664
 665     # Enable unit tests by default if we have a working C++ compiler.
 666     case "$toolchain" in
 667         *-vs*)
 668             soft_enable unit_tests
 669         ;;
 670         *-android-*)
 671             # GTestLog must be modified to use Android logging utilities.
 672         ;;
 673         *-darwin-*)
 674             # iOS/ARM builds do not work with gtest. This does not match
 675             # x86 targets.
 676         ;;
 677         *)
 678             enabled pthread_h && check_cxx "$@" <<EOF && soft_enable unit_tests
 679 int z;
 680 EOF
 681         ;;
 682     esac
 683 }
 684
 685
 686 ##
 687 ## END APPLICATION SPECIFIC CONFIGURATION
 688 ##
 689 CONFIGURE_ARGS="$@"
 690 process "$@"
 691 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
 692 cat <<EOF >> ${BUILD_PFX}vpx_config.c
 693 static const char* const cfg = "$CONFIGURE_ARGS";
 694 const char *vpx_codec_build_config(void) {return cfg;}
 695 EOF