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      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   --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_vp9_postproc}          vp9 specific postprocessing
     42   ${toggle_multithread}           multithreaded encoding and decoding
     43   ${toggle_spatial_resampling}    spatial sampling (scaling) support
     44   ${toggle_realtime_only}         enable this option while building for real-time encoding
     45   ${toggle_onthefly_bitpacking}   enable on-the-fly bitpacking in real-time encoding
     46   ${toggle_error_concealment}     enable this option to get a decoder which is able to conceal losses
     47   ${toggle_runtime_cpu_detect}    runtime cpu detection
     48   ${toggle_shared}                shared library support
     49   ${toggle_static}                static library support
     50   ${toggle_small}                 favor smaller size over speed
     51   ${toggle_postproc_visualizer}   macro block / block level visualizers
     52   ${toggle_multi_res_encoding}    enable multiple-resolution encoding
     53   ${toggle_temporal_denoising}    enable temporal denoising and disable the spatial denoiser
     54 
     55 Codecs:
     56   Codecs can be selectively enabled or disabled individually, or by family:
     57       --disable-<codec>
     58   is equivalent to:
     59       --disable-<codec>-encoder
     60       --disable-<codec>-decoder
     61 
     62   Codecs available in this distribution:
     63 EOF
     64 #restore editor state '
     65 
     66     local family;
     67     local last_family;
     68     local c;
     69     local str;
     70     for c in ${CODECS}; do
     71         family=${c%_*}
     72         if [ "${family}" != "${last_family}" ]; then
     73             [ -z "${str}" ] || echo "${str}"
     74             str="$(printf '    %10s:' ${family})"
     75         fi
     76         str="${str} $(printf '%10s' ${c#*_})"
     77         last_family=${family}
     78     done
     79     echo "${str}"
     80     show_help_post
     81 }
     82 
     83 ##
     84 ## BEGIN APPLICATION SPECIFIC CONFIGURATION
     85 ##
     86 
     87 # all_platforms is a list of all supported target platforms. Maintain
     88 # alphabetically by architecture, generic-gnu last.
     89 all_platforms="${all_platforms} armv5te-android-gcc"
     90 all_platforms="${all_platforms} armv5te-linux-rvct"
     91 all_platforms="${all_platforms} armv5te-linux-gcc"
     92 all_platforms="${all_platforms} armv5te-none-rvct"
     93 all_platforms="${all_platforms} armv6-darwin-gcc"
     94 all_platforms="${all_platforms} armv6-linux-rvct"
     95 all_platforms="${all_platforms} armv6-linux-gcc"
     96 all_platforms="${all_platforms} armv6-none-rvct"
     97 all_platforms="${all_platforms} armv7-android-gcc"   #neon Cortex-A8
     98 all_platforms="${all_platforms} armv7-darwin-gcc"    #neon Cortex-A8
     99 all_platforms="${all_platforms} armv7-linux-rvct"    #neon Cortex-A8
    100 all_platforms="${all_platforms} armv7-linux-gcc"     #neon Cortex-A8
    101 all_platforms="${all_platforms} armv7-none-rvct"     #neon Cortex-A8
    102 all_platforms="${all_platforms} armv7-win32-vs11"
    103 all_platforms="${all_platforms} mips32-linux-gcc"
    104 all_platforms="${all_platforms} ppc32-darwin8-gcc"
    105 all_platforms="${all_platforms} ppc32-darwin9-gcc"
    106 all_platforms="${all_platforms} ppc32-linux-gcc"
    107 all_platforms="${all_platforms} ppc64-darwin8-gcc"
    108 all_platforms="${all_platforms} ppc64-darwin9-gcc"
    109 all_platforms="${all_platforms} ppc64-linux-gcc"
    110 all_platforms="${all_platforms} sparc-solaris-gcc"
    111 all_platforms="${all_platforms} x86-android-gcc"
    112 all_platforms="${all_platforms} x86-darwin8-gcc"
    113 all_platforms="${all_platforms} x86-darwin8-icc"
    114 all_platforms="${all_platforms} x86-darwin9-gcc"
    115 all_platforms="${all_platforms} x86-darwin9-icc"
    116 all_platforms="${all_platforms} x86-darwin10-gcc"
    117 all_platforms="${all_platforms} x86-darwin11-gcc"
    118 all_platforms="${all_platforms} x86-darwin12-gcc"
    119 all_platforms="${all_platforms} x86-darwin13-gcc"
    120 all_platforms="${all_platforms} x86-linux-gcc"
    121 all_platforms="${all_platforms} x86-linux-icc"
    122 all_platforms="${all_platforms} x86-os2-gcc"
    123 all_platforms="${all_platforms} x86-solaris-gcc"
    124 all_platforms="${all_platforms} x86-win32-gcc"
    125 all_platforms="${all_platforms} x86-win32-vs7"
    126 all_platforms="${all_platforms} x86-win32-vs8"
    127 all_platforms="${all_platforms} x86-win32-vs9"
    128 all_platforms="${all_platforms} x86-win32-vs10"
    129 all_platforms="${all_platforms} x86-win32-vs11"
    130 all_platforms="${all_platforms} x86_64-darwin9-gcc"
    131 all_platforms="${all_platforms} x86_64-darwin10-gcc"
    132 all_platforms="${all_platforms} x86_64-darwin11-gcc"
    133 all_platforms="${all_platforms} x86_64-darwin12-gcc"
    134 all_platforms="${all_platforms} x86_64-darwin13-gcc"
    135 all_platforms="${all_platforms} x86_64-linux-gcc"
    136 all_platforms="${all_platforms} x86_64-linux-icc"
    137 all_platforms="${all_platforms} x86_64-solaris-gcc"
    138 all_platforms="${all_platforms} x86_64-win64-gcc"
    139 all_platforms="${all_platforms} x86_64-win64-vs8"
    140 all_platforms="${all_platforms} x86_64-win64-vs9"
    141 all_platforms="${all_platforms} x86_64-win64-vs10"
    142 all_platforms="${all_platforms} x86_64-win64-vs11"
    143 all_platforms="${all_platforms} universal-darwin8-gcc"
    144 all_platforms="${all_platforms} universal-darwin9-gcc"
    145 all_platforms="${all_platforms} universal-darwin10-gcc"
    146 all_platforms="${all_platforms} universal-darwin11-gcc"
    147 all_platforms="${all_platforms} universal-darwin12-gcc"
    148 all_platforms="${all_platforms} universal-darwin13-gcc"
    149 all_platforms="${all_platforms} generic-gnu"
    150 
    151 # all_targets is a list of all targets that can be configured
    152 # note that these should be in dependency order for now.
    153 all_targets="libs examples docs"
    154 
    155 # all targets available are enabled, by default.
    156 for t in ${all_targets}; do
    157     [ -f ${source_path}/${t}.mk ] && enable_feature ${t}
    158 done
    159 
    160 # check installed doxygen version
    161 doxy_version=$(doxygen --version 2>/dev/null)
    162 doxy_major=${doxy_version%%.*}
    163 if [ ${doxy_major:-0} -ge 1 ]; then
    164     doxy_version=${doxy_version#*.}
    165     doxy_minor=${doxy_version%%.*}
    166     doxy_patch=${doxy_version##*.}
    167 
    168     [ $doxy_major -gt 1 ] && enable_feature doxygen
    169     [ $doxy_minor -gt 5 ] && enable_feature doxygen
    170     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable_feature doxygen
    171 fi
    172 
    173 # install everything except the sources, by default. sources will have
    174 # to be enabled when doing dist builds, since that's no longer a common
    175 # case.
    176 enabled doxygen && php -v >/dev/null 2>&1 && enable_feature install_docs
    177 enable_feature install_bins
    178 enable_feature install_libs
    179 
    180 enable_feature static
    181 enable_feature optimizations
    182 enable_feature fast_unaligned #allow unaligned accesses, if supported by hw
    183 enable_feature md5
    184 enable_feature spatial_resampling
    185 enable_feature multithread
    186 enable_feature os_support
    187 enable_feature temporal_denoising
    188 
    189 [ -d ${source_path}/../include ] && enable_feature alt_tree_layout
    190 for d in vp8 vp9; do
    191     [ -d ${source_path}/${d} ] && disable_feature alt_tree_layout;
    192 done
    193 
    194 if ! enabled alt_tree_layout; then
    195 # development environment
    196 [ -d ${source_path}/vp8 ] && CODECS="${CODECS} vp8_encoder vp8_decoder"
    197 [ -d ${source_path}/vp9 ] && CODECS="${CODECS} vp9_encoder vp9_decoder"
    198 else
    199 # customer environment
    200 [ -f ${source_path}/../include/vpx/vp8cx.h ] && CODECS="${CODECS} vp8_encoder"
    201 [ -f ${source_path}/../include/vpx/vp8dx.h ] && CODECS="${CODECS} vp8_decoder"
    202 [ -f ${source_path}/../include/vpx/vp9cx.h ] && CODECS="${CODECS} vp9_encoder"
    203 [ -f ${source_path}/../include/vpx/vp9dx.h ] && CODECS="${CODECS} vp9_decoder"
    204 [ -f ${source_path}/../include/vpx/vp8cx.h ] || disable_feature vp8_encoder
    205 [ -f ${source_path}/../include/vpx/vp8dx.h ] || disable_feature vp8_decoder
    206 [ -f ${source_path}/../include/vpx/vp9cx.h ] || disable_feature vp9_encoder
    207 [ -f ${source_path}/../include/vpx/vp9dx.h ] || disable_feature vp9_decoder
    208 
    209 [ -f ${source_path}/../lib/*/*mt.lib ] && soft_enable static_msvcrt
    210 fi
    211 
    212 CODECS="$(echo ${CODECS} | tr ' ' '\n')"
    213 CODEC_FAMILIES="$(for c in ${CODECS}; do echo ${c%_*}; done | sort | uniq)"
    214 
    215 ARCH_LIST="
    216     arm
    217     mips
    218     x86
    219     x86_64
    220     ppc32
    221     ppc64
    222 "
    223 ARCH_EXT_LIST="
    224     edsp
    225     media
    226     neon
    227 
    228     mips32
    229     dspr2
    230 
    231     mmx
    232     sse
    233     sse2
    234     sse3
    235     ssse3
    236     sse4_1
    237     avx
    238     avx2
    239 
    240     altivec
    241 "
    242 HAVE_LIST="
    243     ${ARCH_EXT_LIST}
    244     vpx_ports
    245     stdint_h
    246     alt_tree_layout
    247     pthread_h
    248     sys_mman_h
    249     unistd_h
    250 "
    251 EXPERIMENT_LIST="
    252     multiple_arf
    253     non420
    254     alpha
    255 "
    256 CONFIG_LIST="
    257     external_build
    258     install_docs
    259     install_bins
    260     install_libs
    261     install_srcs
    262     use_x86inc
    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     vp9_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     use_x86inc
    321     optimizations
    322     ccache
    323     runtime_cpu_detect
    324     thumb
    325 
    326     libs
    327     examples
    328     docs
    329     libc
    330     as
    331     fast_unaligned
    332     codec_srcs
    333     debug_libs
    334     md5
    335 
    336     dequant_tokens
    337     dc_recon
    338     postproc
    339     vp9_postproc
    340     multithread
    341     internal_stats
    342     ${CODECS}
    343     ${CODEC_FAMILIES}
    344     static_msvcrt
    345     mem_tracker
    346     spatial_resampling
    347     realtime_only
    348     onthefly_bitpacking
    349     error_concealment
    350     shared
    351     static
    352     small
    353     postproc_visualizer
    354     unit_tests
    355     multi_res_encoding
    356     temporal_denoising
    357     experimental
    358     decrypt
    359 "
    360 
    361 process_cmdline() {
    362     for opt do
    363         optval="${opt#*=}"
    364         case "$opt" in
    365         --disable-codecs) for c in ${CODECS}; do disable_feature $c; done ;;
    366         --enable-?*|--disable-?*)
    367         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
    368         if echo "${EXPERIMENT_LIST}" | grep "^ *$option\$" >/dev/null; then
    369             if enabled experimental; then
    370                 ${action}_feature $option
    371             else
    372                 log_echo "Ignoring $opt -- not in experimental mode."
    373             fi
    374         else
    375             process_common_cmdline $opt
    376         fi
    377         ;;
    378         *) process_common_cmdline "$opt"
    379         ;;
    380         esac
    381     done
    382 }
    383 
    384 post_process_cmdline() {
    385     local c
    386 
    387     # If the codec family is disabled, disable all components of that family.
    388     # If the codec family is enabled, enable all components of that family.
    389     log_echo "Configuring selected codecs"
    390     for c in ${CODECS}; do
    391         disabled ${c%%_*} && disable_feature ${c}
    392         enabled ${c%%_*} && enable_feature ${c}
    393     done
    394 
    395     # Enable all detected codecs, if they haven't been disabled
    396     for c in ${CODECS}; do soft_enable $c; done
    397 
    398     # Enable the codec family if any component of that family is enabled
    399     for c in ${CODECS}; do
    400         enabled $c && enable_feature ${c%_*}
    401     done
    402 
    403     # Set the {en,de}coders variable if any algorithm in that class is enabled
    404     for c in ${CODECS}; do
    405         enabled ${c} && enable_feature ${c##*_}s
    406     done
    407 }
    408 
    409 
    410 process_targets() {
    411     enabled child || write_common_config_banner
    412     enabled universal || write_common_target_config_h  ${BUILD_PFX}vpx_config.h
    413 
    414     # TODO: add host tools target (obj_int_extract, etc)
    415 
    416     # For fat binaries, call configure recursively to configure for each
    417     # binary architecture to be included.
    418     if enabled universal; then
    419         # Call configure (ourselves) for each subarchitecture
    420         for arch in $fat_bin_archs; do
    421             BUILD_PFX=${arch}/ toolchain=${arch} $self --child $cmdline_args || exit $?
    422         done
    423     fi
    424 
    425     # The write_common_config (config.mk) logic is deferred until after the
    426     # recursive calls to configure complete, because we want our universal
    427     # targets to be executed last.
    428     write_common_config_targets
    429     enabled universal && echo "FAT_ARCHS=${fat_bin_archs}" >> config.mk
    430 
    431     # Calculate the default distribution name, based on the enabled features
    432     local cf
    433     local DIST_DIR=vpx
    434     for cf in $CODEC_FAMILIES; do
    435         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
    436             DIST_DIR="${DIST_DIR}-${cf}"
    437         elif enabled ${cf}_encoder; then
    438             DIST_DIR="${DIST_DIR}-${cf}cx"
    439         elif enabled ${cf}_decoder; then
    440             DIST_DIR="${DIST_DIR}-${cf}dx"
    441         fi
    442     done
    443     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
    444     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
    445     ! enabled postproc && ! enabled vp9_postproc && DIST_DIR="${DIST_DIR}-nopost"
    446     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
    447     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
    448     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
    449     case "${tgt_os}" in
    450     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
    451           DIST_DIR="${DIST_DIR}-${tgt_cc}"
    452           ;;
    453     esac
    454     if [ -f "${source_path}/build/make/version.sh" ]; then
    455         local ver=`"$source_path/build/make/version.sh" --bare $source_path`
    456         DIST_DIR="${DIST_DIR}-${ver}"
    457         VERSION_STRING=${ver}
    458         ver=${ver%%-*}
    459         VERSION_PATCH=${ver##*.}
    460         ver=${ver%.*}
    461         VERSION_MINOR=${ver##*.}
    462         ver=${ver#v}
    463         VERSION_MAJOR=${ver%.*}
    464     fi
    465     enabled child || cat <<EOF >> config.mk
    466 
    467 PREFIX=${prefix}
    468 ifeq (\$(MAKECMDGOALS),dist)
    469 DIST_DIR?=${DIST_DIR}
    470 else
    471 DIST_DIR?=\$(DESTDIR)${prefix}
    472 endif
    473 LIBSUBDIR=${libdir##${prefix}/}
    474 
    475 VERSION_STRING=${VERSION_STRING}
    476 
    477 VERSION_MAJOR=${VERSION_MAJOR}
    478 VERSION_MINOR=${VERSION_MINOR}
    479 VERSION_PATCH=${VERSION_PATCH}
    480 
    481 CONFIGURE_ARGS=${CONFIGURE_ARGS}
    482 EOF
    483     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
    484 
    485     #
    486     # Write makefiles for all enabled targets
    487     #
    488     for tgt in libs examples docs solution; do
    489         local tgt_fn="$tgt-$toolchain.mk"
    490 
    491         if enabled $tgt; then
    492             echo "Creating makefiles for ${toolchain} ${tgt}"
    493             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
    494             #write_${tgt}_config
    495         fi
    496     done
    497 
    498 }
    499 
    500 process_detect() {
    501     if enabled shared; then
    502         # Can only build shared libs on a subset of platforms. Doing this check
    503         # here rather than at option parse time because the target auto-detect
    504         # magic happens after the command line has been parsed.
    505         if ! enabled linux; then
    506             if enabled gnu; then
    507                 echo "--enable-shared is only supported on ELF; assuming this is OK"
    508             else
    509                 die "--enable-shared only supported on ELF for now"
    510             fi
    511         fi
    512     fi
    513     if [ -z "$CC" ] || enabled external_build; then
    514         echo "Bypassing toolchain for environment detection."
    515         enable_feature external_build
    516         check_header() {
    517             log fake_check_header "$@"
    518             header=$1
    519             shift
    520             var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
    521             disable_feature $var
    522             # Headers common to all environments
    523             case $header in
    524                 stdio.h)
    525                     true;
    526                 ;;
    527                 *)
    528                     local result=false
    529                     for d in "$@"; do
    530                         [ -f "${d##-I}/$header" ] && result=true && break
    531                     done
    532                     ${result:-true}
    533             esac && enable_feature $var
    534 
    535             # Specialize windows and POSIX environments.
    536             case $toolchain in
    537                 *-win*-*)
    538                     case $header-$toolchain in
    539                         stdint*-gcc) true;;
    540                         *) false;;
    541                     esac && enable_feature $var
    542                     ;;
    543                 *)
    544                     case $header in
    545                         stdint.h) true;;
    546                         pthread.h) true;;
    547                         sys/mman.h) true;;
    548                         unistd.h) true;;
    549                         *) false;;
    550                     esac && enable_feature $var
    551             esac
    552             enabled $var
    553         }
    554         check_ld() {
    555             true
    556         }
    557     fi
    558     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
    559     check_ld <<EOF || die "Toolchain is unable to link executables"
    560 int main(void) {return 0;}
    561 EOF
    562     # check system headers
    563     check_header stdint.h
    564     check_header pthread.h
    565     check_header sys/mman.h
    566     check_header unistd.h # for sysconf(3) and friends.
    567 
    568     check_header vpx/vpx_integer.h -I${source_path} && enable_feature vpx_ports
    569 }
    570 
    571 process_toolchain() {
    572     process_common_toolchain
    573 
    574     # Handle universal binaries for this architecture
    575     case $toolchain in
    576         universal-darwin*)
    577             local darwin_ver=${tgt_os##darwin}
    578 
    579             # Snow Leopard (10.6/darwin10) dropped support for PPC
    580             # Include PPC support for all prior versions
    581             if [ $darwin_ver -lt 10 ]; then
    582                 fat_bin_archs="$fat_bin_archs ppc32-${tgt_os}-gcc"
    583             fi
    584 
    585             # Tiger (10.4/darwin8) brought support for x86
    586             if [ $darwin_ver -ge 8 ]; then
    587                 fat_bin_archs="$fat_bin_archs x86-${tgt_os}-${tgt_cc}"
    588             fi
    589 
    590             # Leopard (10.5/darwin9) brought 64 bit support
    591             if [ $darwin_ver -ge 9 ]; then
    592                 fat_bin_archs="$fat_bin_archs x86_64-${tgt_os}-${tgt_cc}"
    593             fi
    594             ;;
    595     esac
    596 
    597 
    598     # Enable some useful compiler flags
    599     if enabled gcc; then
    600         enabled werror && check_add_cflags -Werror
    601         check_add_cflags -Wall
    602         check_add_cflags -Wdeclaration-after-statement
    603         check_add_cflags -Wdisabled-optimization
    604         check_add_cflags -Wpointer-arith
    605         check_add_cflags -Wtype-limits
    606         check_add_cflags -Wcast-qual
    607         check_add_cflags -Wvla
    608         check_add_cflags -Wimplicit-function-declaration
    609         check_add_cflags -Wuninitialized
    610         check_add_cflags -Wunused-variable
    611         case ${CC} in
    612           *clang*)
    613               # libvpx and/or clang have issues with aliasing:
    614               # https://code.google.com/p/webm/issues/detail?id=603
    615               # work around them until they are fixed
    616               check_add_cflags -fno-strict-aliasing
    617           ;;
    618           *) check_add_cflags -Wunused-but-set-variable ;;
    619         esac
    620         enabled extra_warnings || check_add_cflags -Wno-unused-function
    621     fi
    622 
    623     if enabled icc; then
    624         enabled werror && check_add_cflags -Werror
    625         check_add_cflags -Wall
    626         check_add_cflags -Wpointer-arith
    627 
    628         # ICC has a number of floating point optimizations that we disable
    629         # in favor of deterministic output WRT to other compilers
    630         add_cflags -fp-model precise
    631     fi
    632 
    633     # Enable extra, harmless warnings. These might provide additional insight
    634     # to what the compiler is doing and why, but in general, but they shouldn't
    635     # be treated as fatal, even if we're treating warnings as errors.
    636     GCC_EXTRA_WARNINGS="
    637         -Wdisabled-optimization
    638         -Winline
    639     "
    640     enabled gcc && EXTRA_WARNINGS="${GCC_EXTRA_WARNINGS}"
    641     RVCT_EXTRA_WARNINGS="
    642         --remarks
    643     "
    644     enabled rvct && EXTRA_WARNINGS="${RVCT_EXTRA_WARNINGS}"
    645     if enabled extra_warnings; then
    646         for w in ${EXTRA_WARNINGS}; do
    647             check_add_cflags ${w}
    648             enabled gcc && enabled werror && check_add_cflags -Wno-error=${w}
    649         done
    650     fi
    651 
    652     # ccache only really works on gcc toolchains
    653     enabled gcc || soft_disable ccache
    654     if enabled mips; then
    655         enable_feature dequant_tokens
    656         enable_feature dc_recon
    657     fi
    658 
    659     if enabled internal_stats; then
    660         enable_feature vp9_postproc
    661     fi
    662 
    663     # Enable the postbuild target if building for visual studio.
    664     case "$tgt_cc" in
    665         vs*) enable_feature msvs
    666              enable_feature solution
    667              vs_version=${tgt_cc##vs}
    668              case $vs_version in
    669              [789])
    670                  VCPROJ_SFX=vcproj
    671                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_proj.sh
    672                  ;;
    673              10|11)
    674                  VCPROJ_SFX=vcxproj
    675                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_vcxproj.sh
    676                  ;;
    677              esac
    678              all_targets="${all_targets} solution"
    679              INLINE="__forceinline"
    680         ;;
    681     esac
    682 
    683     # Other toolchain specific defaults
    684     case $toolchain in x86*|ppc*|universal*) soft_enable postproc;; esac
    685 
    686     if enabled postproc_visualizer; then
    687         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
    688     fi
    689 
    690     # Enable unit tests by default if we have a working C++ compiler.
    691     case "$toolchain" in
    692         *-vs*)
    693             soft_enable unit_tests
    694         ;;
    695         *-android-*)
    696             # GTestLog must be modified to use Android logging utilities.
    697         ;;
    698         *-darwin-*)
    699             # iOS/ARM builds do not work with gtest. This does not match
    700             # x86 targets.
    701         ;;
    702         *-win*)
    703             # Some mingw toolchains don't have pthread available by default.
    704             # Treat these more like visual studio where threading in gtest
    705             # would be disabled for the same reason.
    706             check_cxx "$@" <<EOF && soft_enable unit_tests
    707 int z;
    708 EOF
    709         ;;
    710         *)
    711             enabled pthread_h && check_cxx "$@" <<EOF && soft_enable unit_tests
    712 int z;
    713 EOF
    714         ;;
    715     esac
    716 }
    717 
    718 
    719 ##
    720 ## END APPLICATION SPECIFIC CONFIGURATION
    721 ##
    722 CONFIGURE_ARGS="$@"
    723 process "$@"
    724 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
    725 cat <<EOF >> ${BUILD_PFX}vpx_config.c
    726 static const char* const cfg = "$CONFIGURE_ARGS";
    727 const char *vpx_codec_build_config(void) {return cfg;}
    728 EOF
    729