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