granicus.if.org Git - libvpx/blob - 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 for util in make perl; do
 165     if ! ${util} --version >/dev/null; then
 166         die "${util} is required to build."
 167     fi
 168 done
 169
 170
 171 if [ "`cd ${source_path} && pwd`" != "`pwd`" ]; then
 172   # test to see if source_path already configured
 173   if [ -f ${source_path}/vpx_config.h ]; then
 174     die "source directory already configured; run 'make distclean' there first"
 175   fi
 176 fi
 177
 178 # check installed doxygen version
 179 doxy_version=$(doxygen --version 2>/dev/null)
 180 doxy_major=${doxy_version%%.*}
 181 if [ ${doxy_major:-0} -ge 1 ]; then
 182     doxy_version=${doxy_version#*.}
 183     doxy_minor=${doxy_version%%.*}
 184     doxy_patch=${doxy_version##*.}
 185
 186     [ $doxy_major -gt 1 ] && enable_feature doxygen
 187     [ $doxy_minor -gt 5 ] && enable_feature doxygen
 188     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable_feature doxygen
 189 fi
 190
 191 # install everything except the sources, by default. sources will have
 192 # to be enabled when doing dist builds, since that's no longer a common
 193 # case.
 194 enabled doxygen && php -v >/dev/null 2>&1 && enable_feature install_docs
 195 enable_feature install_bins
 196 enable_feature install_libs
 197
 198 enable_feature static
 199 enable_feature optimizations
 200 enable_feature fast_unaligned #allow unaligned accesses, if supported by hw
 201 enable_feature spatial_resampling
 202 enable_feature multithread
 203 enable_feature os_support
 204 enable_feature temporal_denoising
 205
 206 [ -d ${source_path}/../include ] && enable_feature alt_tree_layout
 207 for d in vp8 vp9; do
 208     [ -d ${source_path}/${d} ] && disable_feature alt_tree_layout;
 209 done
 210
 211 if ! enabled alt_tree_layout; then
 212 # development environment
 213 [ -d ${source_path}/vp8 ] && CODECS="${CODECS} vp8_encoder vp8_decoder"
 214 [ -d ${source_path}/vp9 ] && CODECS="${CODECS} vp9_encoder vp9_decoder"
 215 else
 216 # customer environment
 217 [ -f ${source_path}/../include/vpx/vp8cx.h ] && CODECS="${CODECS} vp8_encoder"
 218 [ -f ${source_path}/../include/vpx/vp8dx.h ] && CODECS="${CODECS} vp8_decoder"
 219 [ -f ${source_path}/../include/vpx/vp9cx.h ] && CODECS="${CODECS} vp9_encoder"
 220 [ -f ${source_path}/../include/vpx/vp9dx.h ] && CODECS="${CODECS} vp9_decoder"
 221 [ -f ${source_path}/../include/vpx/vp8cx.h ] || disable_feature vp8_encoder
 222 [ -f ${source_path}/../include/vpx/vp8dx.h ] || disable_feature vp8_decoder
 223 [ -f ${source_path}/../include/vpx/vp9cx.h ] || disable_feature vp9_encoder
 224 [ -f ${source_path}/../include/vpx/vp9dx.h ] || disable_feature vp9_decoder
 225
 226 [ -f ${source_path}/../lib/*/*mt.lib ] && soft_enable static_msvcrt
 227 fi
 228
 229 CODECS="$(echo ${CODECS} | tr ' ' '\n')"
 230 CODEC_FAMILIES="$(for c in ${CODECS}; do echo ${c%_*}; done | sort | uniq)"
 231
 232 ARCH_LIST="
 233     arm
 234     mips
 235     x86
 236     x86_64
 237     ppc32
 238     ppc64
 239 "
 240 ARCH_EXT_LIST="
 241     edsp
 242     media
 243     neon
 244
 245     mips32
 246     dspr2
 247
 248     mmx
 249     sse
 250     sse2
 251     sse3
 252     ssse3
 253     sse4_1
 254     avx
 255     avx2
 256
 257     altivec
 258 "
 259 HAVE_LIST="
 260     ${ARCH_EXT_LIST}
 261     vpx_ports
 262     stdint_h
 263     alt_tree_layout
 264     pthread_h
 265     sys_mman_h
 266     unistd_h
 267 "
 268 EXPERIMENT_LIST="
 269     multiple_arf
 270     non420
 271     alpha
 272 "
 273 CONFIG_LIST="
 274     external_build
 275     install_docs
 276     install_bins
 277     install_libs
 278     install_srcs
 279     use_x86inc
 280     debug
 281     gprof
 282     gcov
 283     rvct
 284     gcc
 285     msvs
 286     pic
 287     big_endian
 288
 289     codec_srcs
 290     debug_libs
 291     fast_unaligned
 292     mem_manager
 293     mem_tracker
 294     mem_checks
 295
 296     dequant_tokens
 297     dc_recon
 298     runtime_cpu_detect
 299     postproc
 300     vp9_postproc
 301     multithread
 302     internal_stats
 303     ${CODECS}
 304     ${CODEC_FAMILIES}
 305     encoders
 306     decoders
 307     static_msvcrt
 308     spatial_resampling
 309     realtime_only
 310     onthefly_bitpacking
 311     error_concealment
 312     shared
 313     static
 314     small
 315     postproc_visualizer
 316     os_support
 317     unit_tests
 318     webm_io
 319     decode_perf_tests
 320     multi_res_encoding
 321     temporal_denoising
 322     experimental
 323     decrypt
 324     ${EXPERIMENT_LIST}
 325 "
 326 CMDLINE_SELECT="
 327     external_build
 328     extra_warnings
 329     werror
 330     install_docs
 331     install_bins
 332     install_libs
 333     install_srcs
 334     debug
 335     gprof
 336     gcov
 337     pic
 338     use_x86inc
 339     optimizations
 340     ccache
 341     runtime_cpu_detect
 342     thumb
 343
 344     libs
 345     examples
 346     docs
 347     libc
 348     as
 349     fast_unaligned
 350     codec_srcs
 351     debug_libs
 352
 353     dequant_tokens
 354     dc_recon
 355     postproc
 356     vp9_postproc
 357     multithread
 358     internal_stats
 359     ${CODECS}
 360     ${CODEC_FAMILIES}
 361     static_msvcrt
 362     mem_tracker
 363     spatial_resampling
 364     realtime_only
 365     onthefly_bitpacking
 366     error_concealment
 367     shared
 368     static
 369     small
 370     postproc_visualizer
 371     unit_tests
 372     webm_io
 373     decode_perf_tests
 374     multi_res_encoding
 375     temporal_denoising
 376     experimental
 377     decrypt
 378 "
 379
 380 process_cmdline() {
 381     for opt do
 382         optval="${opt#*=}"
 383         case "$opt" in
 384         --disable-codecs) for c in ${CODECS}; do disable_feature $c; done ;;
 385         --enable-?*|--disable-?*)
 386         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
 387         if echo "${EXPERIMENT_LIST}" | grep "^ *$option\$" >/dev/null; then
 388             if enabled experimental; then
 389                 ${action}_feature $option
 390             else
 391                 log_echo "Ignoring $opt -- not in experimental mode."
 392             fi
 393         else
 394             process_common_cmdline $opt
 395         fi
 396         ;;
 397         *) process_common_cmdline "$opt"
 398         ;;
 399         esac
 400     done
 401 }
 402
 403 post_process_cmdline() {
 404     local c
 405
 406     # If the codec family is disabled, disable all components of that family.
 407     # If the codec family is enabled, enable all components of that family.
 408     log_echo "Configuring selected codecs"
 409     for c in ${CODECS}; do
 410         disabled ${c%%_*} && disable_feature ${c}
 411         enabled ${c%%_*} && enable_feature ${c}
 412     done
 413
 414     # Enable all detected codecs, if they haven't been disabled
 415     for c in ${CODECS}; do soft_enable $c; done
 416
 417     # Enable the codec family if any component of that family is enabled
 418     for c in ${CODECS}; do
 419         enabled $c && enable_feature ${c%_*}
 420     done
 421
 422     # Set the {en,de}coders variable if any algorithm in that class is enabled
 423     for c in ${CODECS}; do
 424         enabled ${c} && enable_feature ${c##*_}s
 425     done
 426 }
 427
 428
 429 process_targets() {
 430     enabled child || write_common_config_banner
 431     enabled universal || write_common_target_config_h  ${BUILD_PFX}vpx_config.h
 432
 433     # TODO: add host tools target (obj_int_extract, etc)
 434
 435     # For fat binaries, call configure recursively to configure for each
 436     # binary architecture to be included.
 437     if enabled universal; then
 438         # Call configure (ourselves) for each subarchitecture
 439         for arch in $fat_bin_archs; do
 440             BUILD_PFX=${arch}/ toolchain=${arch} $self --child $cmdline_args || exit $?
 441         done
 442     fi
 443
 444     # The write_common_config (config.mk) logic is deferred until after the
 445     # recursive calls to configure complete, because we want our universal
 446     # targets to be executed last.
 447     write_common_config_targets
 448     enabled universal && echo "FAT_ARCHS=${fat_bin_archs}" >> config.mk
 449
 450     # Calculate the default distribution name, based on the enabled features
 451     local cf
 452     local DIST_DIR=vpx
 453     for cf in $CODEC_FAMILIES; do
 454         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
 455             DIST_DIR="${DIST_DIR}-${cf}"
 456         elif enabled ${cf}_encoder; then
 457             DIST_DIR="${DIST_DIR}-${cf}cx"
 458         elif enabled ${cf}_decoder; then
 459             DIST_DIR="${DIST_DIR}-${cf}dx"
 460         fi
 461     done
 462     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
 463     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
 464     ! enabled postproc && ! enabled vp9_postproc && DIST_DIR="${DIST_DIR}-nopost"
 465     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
 466     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
 467     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
 468     case "${tgt_os}" in
 469     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
 470           DIST_DIR="${DIST_DIR}-${tgt_cc}"
 471           ;;
 472     esac
 473     if [ -f "${source_path}/build/make/version.sh" ]; then
 474         local ver=`"$source_path/build/make/version.sh" --bare $source_path`
 475         DIST_DIR="${DIST_DIR}-${ver}"
 476         VERSION_STRING=${ver}
 477         ver=${ver%%-*}
 478         VERSION_PATCH=${ver##*.}
 479         ver=${ver%.*}
 480         VERSION_MINOR=${ver##*.}
 481         ver=${ver#v}
 482         VERSION_MAJOR=${ver%.*}
 483     fi
 484     enabled child || cat <<EOF >> config.mk
 485
 486 PREFIX=${prefix}
 487 ifeq (\$(MAKECMDGOALS),dist)
 488 DIST_DIR?=${DIST_DIR}
 489 else
 490 DIST_DIR?=\$(DESTDIR)${prefix}
 491 endif
 492 LIBSUBDIR=${libdir##${prefix}/}
 493
 494 VERSION_STRING=${VERSION_STRING}
 495
 496 VERSION_MAJOR=${VERSION_MAJOR}
 497 VERSION_MINOR=${VERSION_MINOR}
 498 VERSION_PATCH=${VERSION_PATCH}
 499
 500 CONFIGURE_ARGS=${CONFIGURE_ARGS}
 501 EOF
 502     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
 503
 504     #
 505     # Write makefiles for all enabled targets
 506     #
 507     for tgt in libs examples docs solution; do
 508         local tgt_fn="$tgt-$toolchain.mk"
 509
 510         if enabled $tgt; then
 511             echo "Creating makefiles for ${toolchain} ${tgt}"
 512             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
 513             #write_${tgt}_config
 514         fi
 515     done
 516
 517 }
 518
 519 process_detect() {
 520     if enabled shared; then
 521         # Can only build shared libs on a subset of platforms. Doing this check
 522         # here rather than at option parse time because the target auto-detect
 523         # magic happens after the command line has been parsed.
 524         if ! enabled linux; then
 525             if enabled gnu; then
 526                 echo "--enable-shared is only supported on ELF; assuming this is OK"
 527             else
 528                 die "--enable-shared only supported on ELF for now"
 529             fi
 530         fi
 531     fi
 532     if [ -z "$CC" ] || enabled external_build; then
 533         echo "Bypassing toolchain for environment detection."
 534         enable_feature external_build
 535         check_header() {
 536             log fake_check_header "$@"
 537             header=$1
 538             shift
 539             var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
 540             disable_feature $var
 541             # Headers common to all environments
 542             case $header in
 543                 stdio.h)
 544                     true;
 545                 ;;
 546                 *)
 547                     local result=false
 548                     for d in "$@"; do
 549                         [ -f "${d##-I}/$header" ] && result=true && break
 550                     done
 551                     ${result:-true}
 552             esac && enable_feature $var
 553
 554             # Specialize windows and POSIX environments.
 555             case $toolchain in
 556                 *-win*-*)
 557                     case $header-$toolchain in
 558                         stdint*-gcc) true;;
 559                         *) false;;
 560                     esac && enable_feature $var
 561                     ;;
 562                 *)
 563                     case $header in
 564                         stdint.h) true;;
 565                         pthread.h) true;;
 566                         sys/mman.h) true;;
 567                         unistd.h) true;;
 568                         *) false;;
 569                     esac && enable_feature $var
 570             esac
 571             enabled $var
 572         }
 573         check_ld() {
 574             true
 575         }
 576     fi
 577     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
 578     check_ld <<EOF || die "Toolchain is unable to link executables"
 579 int main(void) {return 0;}
 580 EOF
 581     # check system headers
 582     check_header stdint.h
 583     check_header pthread.h
 584     check_header sys/mman.h
 585     check_header unistd.h # for sysconf(3) and friends.
 586
 587     check_header vpx/vpx_integer.h -I${source_path} && enable_feature vpx_ports
 588 }
 589
 590 process_toolchain() {
 591     process_common_toolchain
 592
 593     # Handle universal binaries for this architecture
 594     case $toolchain in
 595         universal-darwin*)
 596             local darwin_ver=${tgt_os##darwin}
 597
 598             # Snow Leopard (10.6/darwin10) dropped support for PPC
 599             # Include PPC support for all prior versions
 600             if [ $darwin_ver -lt 10 ]; then
 601                 fat_bin_archs="$fat_bin_archs ppc32-${tgt_os}-gcc"
 602             fi
 603
 604             # Tiger (10.4/darwin8) brought support for x86
 605             if [ $darwin_ver -ge 8 ]; then
 606                 fat_bin_archs="$fat_bin_archs x86-${tgt_os}-${tgt_cc}"
 607             fi
 608
 609             # Leopard (10.5/darwin9) brought 64 bit support
 610             if [ $darwin_ver -ge 9 ]; then
 611                 fat_bin_archs="$fat_bin_archs x86_64-${tgt_os}-${tgt_cc}"
 612             fi
 613             ;;
 614     esac
 615
 616
 617     # Enable some useful compiler flags
 618     if enabled gcc; then
 619         enabled werror && check_add_cflags -Werror
 620         check_add_cflags -Wall
 621         check_add_cflags -Wdeclaration-after-statement
 622         check_add_cflags -Wdisabled-optimization
 623         check_add_cflags -Wpointer-arith
 624         check_add_cflags -Wtype-limits
 625         check_add_cflags -Wcast-qual
 626         check_add_cflags -Wvla
 627         check_add_cflags -Wimplicit-function-declaration
 628         check_add_cflags -Wuninitialized
 629         check_add_cflags -Wunused-variable
 630         case ${CC} in
 631           *clang*)
 632               # libvpx and/or clang have issues with aliasing:
 633               # https://code.google.com/p/webm/issues/detail?id=603
 634               # work around them until they are fixed
 635               check_add_cflags -fno-strict-aliasing
 636           ;;
 637           *) check_add_cflags -Wunused-but-set-variable ;;
 638         esac
 639         enabled extra_warnings || check_add_cflags -Wno-unused-function
 640     fi
 641
 642     if enabled icc; then
 643         enabled werror && check_add_cflags -Werror
 644         check_add_cflags -Wall
 645         check_add_cflags -Wpointer-arith
 646
 647         # ICC has a number of floating point optimizations that we disable
 648         # in favor of deterministic output WRT to other compilers
 649         add_cflags -fp-model precise
 650     fi
 651
 652     # Enable extra, harmless warnings. These might provide additional insight
 653     # to what the compiler is doing and why, but in general, but they shouldn't
 654     # be treated as fatal, even if we're treating warnings as errors.
 655     GCC_EXTRA_WARNINGS="
 656         -Wdisabled-optimization
 657         -Winline
 658     "
 659     enabled gcc && EXTRA_WARNINGS="${GCC_EXTRA_WARNINGS}"
 660     RVCT_EXTRA_WARNINGS="
 661         --remarks
 662     "
 663     enabled rvct && EXTRA_WARNINGS="${RVCT_EXTRA_WARNINGS}"
 664     if enabled extra_warnings; then
 665         for w in ${EXTRA_WARNINGS}; do
 666             check_add_cflags ${w}
 667             enabled gcc && enabled werror && check_add_cflags -Wno-error=${w}
 668         done
 669     fi
 670
 671     # ccache only really works on gcc toolchains
 672     enabled gcc || soft_disable ccache
 673     if enabled mips; then
 674         enable_feature dequant_tokens
 675         enable_feature dc_recon
 676     fi
 677
 678     if enabled internal_stats; then
 679         enable_feature vp9_postproc
 680     fi
 681
 682     # Enable the postbuild target if building for visual studio.
 683     case "$tgt_cc" in
 684         vs*) enable_feature msvs
 685              enable_feature solution
 686              vs_version=${tgt_cc##vs}
 687              case $vs_version in
 688              [789])
 689                  VCPROJ_SFX=vcproj
 690                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_proj.sh
 691                  ;;
 692              10|11|12)
 693                  VCPROJ_SFX=vcxproj
 694                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_vcxproj.sh
 695                  enabled werror && gen_vcproj_cmd="${gen_vcproj_cmd} --enable-werror"
 696                  ;;
 697              esac
 698              all_targets="${all_targets} solution"
 699              INLINE="__forceinline"
 700         ;;
 701     esac
 702
 703     # Other toolchain specific defaults
 704     case $toolchain in x86*|ppc*|universal*) soft_enable postproc;; esac
 705
 706     if enabled postproc_visualizer; then
 707         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
 708     fi
 709
 710     # Enable WebM IO by default.
 711     soft_enable webm_io
 712
 713     # Enable unit tests by default if we have a working C++ compiler.
 714     case "$toolchain" in
 715         *-vs*)
 716             soft_enable unit_tests
 717         ;;
 718         *-android-*)
 719             # GTestLog must be modified to use Android logging utilities.
 720         ;;
 721         *-darwin-*)
 722             # iOS/ARM builds do not work with gtest. This does not match
 723             # x86 targets.
 724         ;;
 725         *-win*)
 726             # Some mingw toolchains don't have pthread available by default.
 727             # Treat these more like visual studio where threading in gtest
 728             # would be disabled for the same reason.
 729             check_cxx "$@" <<EOF && soft_enable unit_tests
 730 int z;
 731 EOF
 732         ;;
 733         *)
 734             enabled pthread_h && check_cxx "$@" <<EOF && soft_enable unit_tests
 735 int z;
 736 EOF
 737         ;;
 738     esac
 739 }
 740
 741
 742 ##
 743 ## END APPLICATION SPECIFIC CONFIGURATION
 744 ##
 745 CONFIGURE_ARGS="$@"
 746 process "$@"
 747 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
 748 cat <<EOF >> ${BUILD_PFX}vpx_config.c
 749 static const char* const cfg = "$CONFIGURE_ARGS";
 750 const char *vpx_codec_build_config(void) {return cfg;}
 751 EOF