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="${all_platforms} x86-darwin8-gcc"
 110 all_platforms="${all_platforms} x86-darwin8-icc"
 111 all_platforms="${all_platforms} x86-darwin9-gcc"
 112 all_platforms="${all_platforms} x86-darwin9-icc"
 113 all_platforms="${all_platforms} x86-darwin10-gcc"
 114 all_platforms="${all_platforms} x86-darwin11-gcc"
 115 all_platforms="${all_platforms} x86-darwin12-gcc"
 116 all_platforms="${all_platforms} x86-linux-gcc"
 117 all_platforms="${all_platforms} x86-linux-icc"
 118 all_platforms="${all_platforms} x86-os2-gcc"
 119 all_platforms="${all_platforms} x86-solaris-gcc"
 120 all_platforms="${all_platforms} x86-win32-gcc"
 121 all_platforms="${all_platforms} x86-win32-vs7"
 122 all_platforms="${all_platforms} x86-win32-vs8"
 123 all_platforms="${all_platforms} x86-win32-vs9"
 124 all_platforms="${all_platforms} x86_64-darwin9-gcc"
 125 all_platforms="${all_platforms} x86_64-darwin10-gcc"
 126 all_platforms="${all_platforms} x86_64-darwin11-gcc"
 127 all_platforms="${all_platforms} x86_64-darwin12-gcc"
 128 all_platforms="${all_platforms} x86_64-linux-gcc"
 129 all_platforms="${all_platforms} x86_64-linux-icc"
 130 all_platforms="${all_platforms} x86_64-solaris-gcc"
 131 all_platforms="${all_platforms} x86_64-win64-gcc"
 132 all_platforms="${all_platforms} x86_64-win64-vs8"
 133 all_platforms="${all_platforms} x86_64-win64-vs9"
 134 all_platforms="${all_platforms} universal-darwin8-gcc"
 135 all_platforms="${all_platforms} universal-darwin9-gcc"
 136 all_platforms="${all_platforms} universal-darwin10-gcc"
 137 all_platforms="${all_platforms} universal-darwin11-gcc"
 138 all_platforms="${all_platforms} universal-darwin12-gcc"
 139 all_platforms="${all_platforms} generic-gnu"
 140
 141 # all_targets is a list of all targets that can be configured
 142 # note that these should be in dependency order for now.
 143 all_targets="libs examples docs"
 144
 145 # all targets available are enabled, by default.
 146 for t in ${all_targets}; do
 147     [ -f ${source_path}/${t}.mk ] && enable ${t}
 148 done
 149
 150 # check installed doxygen version
 151 doxy_version=$(doxygen --version 2>/dev/null)
 152 doxy_major=${doxy_version%%.*}
 153 if [ ${doxy_major:-0} -ge 1 ]; then
 154     doxy_version=${doxy_version#*.}
 155     doxy_minor=${doxy_version%%.*}
 156     doxy_patch=${doxy_version##*.}
 157
 158     [ $doxy_major -gt 1 ] && enable doxygen
 159     [ $doxy_minor -gt 5 ] && enable doxygen
 160     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable doxygen
 161 fi
 162
 163 # install everything except the sources, by default. sources will have
 164 # to be enabled when doing dist builds, since that's no longer a common
 165 # case.
 166 enabled doxygen && php -v >/dev/null 2>&1 && enable install_docs
 167 enable install_bins
 168 enable install_libs
 169
 170 enable static
 171 enable optimizations
 172 enable fast_unaligned #allow unaligned accesses, if supported by hw
 173 enable md5
 174 enable spatial_resampling
 175 enable multithread
 176 enable os_support
 177 enable temporal_denoising
 178
 179 [ -d ${source_path}/../include ] && enable alt_tree_layout
 180 for d in vp8 vp9; do
 181     [ -d ${source_path}/${d} ] && disable alt_tree_layout;
 182 done
 183
 184 if ! enabled alt_tree_layout; then
 185 # development environment
 186 [ -d ${source_path}/vp8 ] && CODECS="${CODECS} vp8_encoder vp8_decoder"
 187 [ -d ${source_path}/vp9 ] && CODECS="${CODECS} vp9_encoder vp9_decoder"
 188 else
 189 # customer environment
 190 [ -f ${source_path}/../include/vpx/vp8cx.h ] && CODECS="${CODECS} vp8_encoder"
 191 [ -f ${source_path}/../include/vpx/vp8dx.h ] && CODECS="${CODECS} vp8_decoder"
 192 [ -f ${source_path}/../include/vpx/vp9cx.h ] && CODECS="${CODECS} vp9_encoder"
 193 [ -f ${source_path}/../include/vpx/vp9dx.h ] && CODECS="${CODECS} vp9_decoder"
 194 [ -f ${source_path}/../include/vpx/vp8cx.h ] || disable vp8_encoder
 195 [ -f ${source_path}/../include/vpx/vp8dx.h ] || disable vp8_decoder
 196 [ -f ${source_path}/../include/vpx/vp9cx.h ] || disable vp9_encoder
 197 [ -f ${source_path}/../include/vpx/vp9dx.h ] || disable vp9_decoder
 198
 199 [ -f ${source_path}/../lib/*/*mt.lib ] && soft_enable static_msvcrt
 200 fi
 201
 202 CODECS="$(echo ${CODECS} | tr ' ' '\n')"
 203 CODEC_FAMILIES="$(for c in ${CODECS}; do echo ${c%_*}; done | sort | uniq)"
 204
 205 ARCH_LIST="
 206     arm
 207     mips
 208     x86
 209     x86_64
 210     ppc32
 211     ppc64
 212 "
 213 ARCH_EXT_LIST="
 214     edsp
 215     media
 216     neon
 217
 218     mips32
 219     dspr2
 220
 221     mmx
 222     sse
 223     sse2
 224     sse3
 225     ssse3
 226     sse4_1
 227
 228     altivec
 229 "
 230 HAVE_LIST="
 231     ${ARCH_EXT_LIST}
 232     vpx_ports
 233     stdint_h
 234     alt_tree_layout
 235     pthread_h
 236     sys_mman_h
 237     unistd_h
 238 "
 239 EXPERIMENT_LIST="
 240     csm
 241     comp_intra_pred
 242     pred_filter
 243     lossless
 244     subpelrefmv
 245     new_mvref
 246     implicit_segmentation
 247     newbintramodes
 248     comp_interintra_pred
 249     tx32x32
 250     tx64x64
 251     dwtdcthybrid
 252     cnvcontext
 253     newcoefcontext
 254     enable_6tap
 255     widerlpf
 256 "
 257 CONFIG_LIST="
 258     external_build
 259     install_docs
 260     install_bins
 261     install_libs
 262     install_srcs
 263     debug
 264     gprof
 265     gcov
 266     rvct
 267     gcc
 268     msvs
 269     pic
 270     big_endian
 271
 272     codec_srcs
 273     debug_libs
 274     fast_unaligned
 275     mem_manager
 276     mem_tracker
 277     mem_checks
 278     md5
 279
 280     dequant_tokens
 281     dc_recon
 282     runtime_cpu_detect
 283     postproc
 284     multithread
 285     internal_stats
 286     ${CODECS}
 287     ${CODEC_FAMILIES}
 288     encoders
 289     decoders
 290     static_msvcrt
 291     spatial_resampling
 292     realtime_only
 293     onthefly_bitpacking
 294     error_concealment
 295     shared
 296     static
 297     small
 298     postproc_visualizer
 299     os_support
 300     unit_tests
 301     multi_res_encoding
 302     temporal_denoising
 303     experimental
 304     ${EXPERIMENT_LIST}
 305 "
 306 CMDLINE_SELECT="
 307     external_build
 308     extra_warnings
 309     werror
 310     install_docs
 311     install_bins
 312     install_libs
 313     install_srcs
 314     debug
 315     gprof
 316     gcov
 317     pic
 318     optimizations
 319     ccache
 320     runtime_cpu_detect
 321
 322     libs
 323     examples
 324     docs
 325     libc
 326     as
 327     fast_unaligned
 328     codec_srcs
 329     debug_libs
 330     md5
 331
 332     dequant_tokens
 333     dc_recon
 334     postproc
 335     multithread
 336     internal_stats
 337     ${CODECS}
 338     ${CODEC_FAMILIES}
 339     static_msvcrt
 340     mem_tracker
 341     spatial_resampling
 342     realtime_only
 343     onthefly_bitpacking
 344     error_concealment
 345     shared
 346     static
 347     small
 348     postproc_visualizer
 349     unit_tests
 350     multi_res_encoding
 351     temporal_denoising
 352     experimental
 353 "
 354
 355 process_cmdline() {
 356     for opt do
 357         optval="${opt#*=}"
 358         case "$opt" in
 359         --disable-codecs) for c in ${CODECS}; do disable $c; done ;;
 360         --enable-?*|--disable-?*)
 361         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
 362         if echo "${EXPERIMENT_LIST}" | grep "^ *$option\$" >/dev/null; then
 363             if enabled experimental; then
 364                 $action $option
 365             else
 366                 log_echo "Ignoring $opt -- not in experimental mode."
 367             fi
 368         else
 369             process_common_cmdline $opt
 370         fi
 371         ;;
 372         *) process_common_cmdline "$opt"
 373         ;;
 374         esac
 375     done
 376 }
 377
 378 post_process_cmdline() {
 379     local c
 380
 381     # If the codec family is disabled, disable all components of that family.
 382     # If the codec family is enabled, enable all components of that family.
 383     log_echo "Configuring selected codecs"
 384     for c in ${CODECS}; do
 385         disabled ${c%%_*} && disable ${c}
 386         enabled ${c%%_*} && enable ${c}
 387     done
 388
 389     # Enable all detected codecs, if they haven't been disabled
 390     for c in ${CODECS}; do soft_enable $c; done
 391
 392     # Enable the codec family if any component of that family is enabled
 393     for c in ${CODECS}; do
 394         enabled $c && enable ${c%_*}
 395     done
 396
 397     # Set the {en,de}coders variable if any algorithm in that class is enabled
 398     for c in ${CODECS}; do
 399         enabled ${c} && enable ${c##*_}s
 400     done
 401 }
 402
 403
 404 process_targets() {
 405     enabled child || write_common_config_banner
 406     enabled universal || write_common_target_config_h  ${BUILD_PFX}vpx_config.h
 407
 408     # TODO: add host tools target (obj_int_extract, etc)
 409
 410     # For fat binaries, call configure recursively to configure for each
 411     # binary architecture to be included.
 412     if enabled universal; then
 413         # Call configure (ourselves) for each subarchitecture
 414         for arch in $fat_bin_archs; do
 415             BUILD_PFX=${arch}/ toolchain=${arch} $self --child $cmdline_args || exit $?
 416         done
 417     fi
 418
 419     # The write_common_config (config.mk) logic is deferred until after the
 420     # recursive calls to configure complete, becuase we want our universal
 421     # targets to be executed last.
 422     write_common_config_targets
 423     enabled universal && echo "FAT_ARCHS=${fat_bin_archs}" >> config.mk
 424
 425     # Calculate the default distribution name, based on the enabled features
 426     local cf
 427     local DIST_DIR=vpx
 428     for cf in $CODEC_FAMILIES; do
 429         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
 430             DIST_DIR="${DIST_DIR}-${cf}"
 431         elif enabled ${cf}_encoder; then
 432             DIST_DIR="${DIST_DIR}-${cf}cx"
 433         elif enabled ${cf}_decoder; then
 434             DIST_DIR="${DIST_DIR}-${cf}dx"
 435         fi
 436     done
 437     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
 438     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
 439     ! enabled postproc && DIST_DIR="${DIST_DIR}-nopost"
 440     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
 441     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
 442     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
 443     case "${tgt_os}" in
 444     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
 445           DIST_DIR="${DIST_DIR}-${tgt_cc}"
 446           ;;
 447     esac
 448     if [ -f "${source_path}/build/make/version.sh" ]; then
 449         local ver=`"$source_path/build/make/version.sh" --bare $source_path`
 450         DIST_DIR="${DIST_DIR}-${ver}"
 451         VERSION_STRING=${ver}
 452         ver=${ver%%-*}
 453         VERSION_PATCH=${ver##*.}
 454         ver=${ver%.*}
 455         VERSION_MINOR=${ver##*.}
 456         ver=${ver#v}
 457         VERSION_MAJOR=${ver%.*}
 458     fi
 459     enabled child || cat <<EOF >> config.mk
 460
 461 PREFIX=${prefix}
 462 ifeq (\$(MAKECMDGOALS),dist)
 463 DIST_DIR?=${DIST_DIR}
 464 else
 465 DIST_DIR?=\$(DESTDIR)${prefix}
 466 endif
 467 LIBSUBDIR=${libdir##${prefix}/}
 468
 469 VERSION_STRING=${VERSION_STRING}
 470
 471 VERSION_MAJOR=${VERSION_MAJOR}
 472 VERSION_MINOR=${VERSION_MINOR}
 473 VERSION_PATCH=${VERSION_PATCH}
 474
 475 CONFIGURE_ARGS=${CONFIGURE_ARGS}
 476 EOF
 477     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
 478
 479     #
 480     # Write makefiles for all enabled targets
 481     #
 482     for tgt in libs examples docs solution; do
 483         local tgt_fn="$tgt-$toolchain.mk"
 484
 485         if enabled $tgt; then
 486             echo "Creating makefiles for ${toolchain} ${tgt}"
 487             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
 488             #write_${tgt}_config
 489         fi
 490     done
 491
 492 }
 493
 494 process_detect() {
 495     if enabled shared; then
 496         # Can only build shared libs on a subset of platforms. Doing this check
 497         # here rather than at option parse time because the target auto-detect
 498         # magic happens after the command line has been parsed.
 499         if ! enabled linux; then
 500             if enabled gnu; then
 501                 echo "--enable-shared is only supported on ELF; assuming this is OK"
 502             else
 503                 die "--enable-shared only supported on ELF for now"
 504             fi
 505         fi
 506     fi
 507     if [ -z "$CC" ] || enabled external_build; then
 508         echo "Bypassing toolchain for environment detection."
 509         enable external_build
 510         check_header() {
 511             log fake_check_header "$@"
 512             header=$1
 513             shift
 514             var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
 515             disable $var
 516             # Headers common to all environments
 517             case $header in
 518                 stdio.h)
 519                     true;
 520                 ;;
 521                 *)
 522                     local result=false
 523                     for d in "$@"; do
 524                         [ -f "${d##-I}/$header" ] && result=true && break
 525                     done
 526                     ${result:-true}
 527             esac && enable $var
 528
 529             # Specialize windows and POSIX environments.
 530             case $toolchain in
 531                 *-win*-*)
 532                     case $header-$toolchain in
 533                         stdint*-gcc) true;;
 534                         *) false;;
 535                     esac && enable $var
 536                     ;;
 537                 *)
 538                     case $header in
 539                         stdint.h) true;;
 540                         pthread.h) true;;
 541                         sys/mman.h) true;;
 542                         unistd.h) true;;
 543                         *) false;;
 544                     esac && enable $var
 545             esac
 546             enabled $var
 547         }
 548         check_ld() {
 549             true
 550         }
 551     fi
 552     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
 553     check_ld <<EOF || die "Toolchain is unable to link executables"
 554 int main(void) {return 0;}
 555 EOF
 556     # check system headers
 557     check_header stdint.h
 558     check_header pthread.h
 559     check_header sys/mman.h
 560     check_header unistd.h # for sysconf(3) and friends.
 561
 562     check_header vpx/vpx_integer.h -I${source_path} && enable vpx_ports
 563 }
 564
 565 process_toolchain() {
 566     process_common_toolchain
 567
 568     # Handle universal binaries for this architecture
 569     case $toolchain in
 570         universal-darwin*)
 571             local darwin_ver=${tgt_os##darwin}
 572
 573             # Snow Leopard (10.6/darwin10) dropped support for PPC
 574             # Include PPC support for all prior versions
 575             if [ $darwin_ver -lt 10 ]; then
 576                 fat_bin_archs="$fat_bin_archs ppc32-${tgt_os}-gcc"
 577             fi
 578
 579             # Tiger (10.4/darwin8) brought support for x86
 580             if [ $darwin_ver -ge 8 ]; then
 581                 fat_bin_archs="$fat_bin_archs x86-${tgt_os}-${tgt_cc}"
 582             fi
 583
 584             # Leopard (10.5/darwin9) brought 64 bit support
 585             if [ $darwin_ver -ge 9 ]; then
 586                 fat_bin_archs="$fat_bin_archs x86_64-${tgt_os}-${tgt_cc}"
 587             fi
 588             ;;
 589     esac
 590
 591
 592     # Enable some useful compiler flags
 593     if enabled gcc; then
 594         enabled werror && check_add_cflags -Werror
 595         check_add_cflags -Wall
 596         check_add_cflags -Wdeclaration-after-statement
 597         check_add_cflags -Wdisabled-optimization
 598         check_add_cflags -Wpointer-arith
 599         check_add_cflags -Wtype-limits
 600         check_add_cflags -Wcast-qual
 601         check_add_cflags -Wvla
 602         check_add_cflags -Wimplicit-function-declaration
 603         check_add_cflags -Wuninitialized
 604         check_add_cflags -Wunused-variable
 605         check_add_cflags -Wunused-but-set-variable
 606         enabled extra_warnings || check_add_cflags -Wno-unused-function
 607     fi
 608
 609     if enabled icc; then
 610         enabled werror && check_add_cflags -Werror
 611         check_add_cflags -Wall
 612         check_add_cflags -Wpointer-arith
 613
 614         # ICC has a number of floating point optimizations that we disable
 615         # in favor of deterministic output WRT to other compilers
 616         add_cflags -fp-model precise
 617     fi
 618
 619     # Enable extra, harmless warnings. These might provide additional insight
 620     # to what the compiler is doing and why, but in general, but they shouldn't
 621     # be treated as fatal, even if we're treating warnings as errors.
 622     GCC_EXTRA_WARNINGS="
 623         -Wdisabled-optimization
 624         -Winline
 625     "
 626     enabled gcc && EXTRA_WARNINGS="${GCC_EXTRA_WARNINGS}"
 627     RVCT_EXTRA_WARNINGS="
 628         --remarks
 629     "
 630     enabled rvct && EXTRA_WARNINGS="${RVCT_EXTRA_WARNINGS}"
 631     if enabled extra_warnings; then
 632         for w in ${EXTRA_WARNINGS}; do
 633             check_add_cflags ${w}
 634             enabled gcc && enabled werror && check_add_cflags -Wno-error=${w}
 635         done
 636     fi
 637
 638     # ccache only really works on gcc toolchains
 639     enabled gcc || soft_disable ccache
 640     if enabled mips; then
 641         enable dequant_tokens
 642         enable dc_recon
 643     fi
 644
 645     # Enable the postbuild target if building for visual studio.
 646     case "$tgt_cc" in
 647         vs*) enable msvs
 648              enable solution
 649              vs_version=${tgt_cc##vs}
 650              all_targets="${all_targets} solution"
 651         ;;
 652     esac
 653
 654     # Other toolchain specific defaults
 655     case $toolchain in x86*|ppc*|universal*) soft_enable postproc;; esac
 656
 657     if enabled postproc_visualizer; then
 658         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
 659     fi
 660
 661     # Enable unit tests if we have a working C++ compiler
 662     case "$toolchain" in
 663         *-vs*)
 664             soft_enable unit_tests
 665         ;;
 666         *-android-*)
 667             # GTestLog must be modified to use Android logging utilities.
 668         ;;
 669         *-darwin-*)
 670             # iOS/ARM builds do not work with gtest. This does not match
 671             # x86 targets.
 672         ;;
 673         *)
 674             check_cxx "$@" <<EOF && soft_enable unit_tests
 675 int z;
 676 EOF
 677         ;;
 678     esac
 679 }
 680
 681
 682 ##
 683 ## END APPLICATION SPECIFIC CONFIGURATION
 684 ##
 685 CONFIGURE_ARGS="$@"
 686 process "$@"
 687 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
 688 cat <<EOF >> ${BUILD_PFX}vpx_config.c
 689 static const char* const cfg = "$CONFIGURE_ARGS";
 690 const char *vpx_codec_build_config(void) {return cfg;}
 691 EOF