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
  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} armv7-win32-vs12"
 104 all_platforms="${all_platforms} mips32-linux-gcc"
 105 all_platforms="${all_platforms} ppc32-darwin8-gcc"
 106 all_platforms="${all_platforms} ppc32-darwin9-gcc"
 107 all_platforms="${all_platforms} ppc32-linux-gcc"
 108 all_platforms="${all_platforms} ppc64-darwin8-gcc"
 109 all_platforms="${all_platforms} ppc64-darwin9-gcc"
 110 all_platforms="${all_platforms} ppc64-linux-gcc"
 111 all_platforms="${all_platforms} sparc-solaris-gcc"
 112 all_platforms="${all_platforms} x86-android-gcc"
 113 all_platforms="${all_platforms} x86-darwin8-gcc"
 114 all_platforms="${all_platforms} x86-darwin8-icc"
 115 all_platforms="${all_platforms} x86-darwin9-gcc"
 116 all_platforms="${all_platforms} x86-darwin9-icc"
 117 all_platforms="${all_platforms} x86-darwin10-gcc"
 118 all_platforms="${all_platforms} x86-darwin11-gcc"
 119 all_platforms="${all_platforms} x86-darwin12-gcc"
 120 all_platforms="${all_platforms} x86-darwin13-gcc"
 121 all_platforms="${all_platforms} x86-linux-gcc"
 122 all_platforms="${all_platforms} x86-linux-icc"
 123 all_platforms="${all_platforms} x86-os2-gcc"
 124 all_platforms="${all_platforms} x86-solaris-gcc"
 125 all_platforms="${all_platforms} x86-win32-gcc"
 126 all_platforms="${all_platforms} x86-win32-vs7"
 127 all_platforms="${all_platforms} x86-win32-vs8"
 128 all_platforms="${all_platforms} x86-win32-vs9"
 129 all_platforms="${all_platforms} x86-win32-vs10"
 130 all_platforms="${all_platforms} x86-win32-vs11"
 131 all_platforms="${all_platforms} x86-win32-vs12"
 132 all_platforms="${all_platforms} x86_64-darwin9-gcc"
 133 all_platforms="${all_platforms} x86_64-darwin10-gcc"
 134 all_platforms="${all_platforms} x86_64-darwin11-gcc"
 135 all_platforms="${all_platforms} x86_64-darwin12-gcc"
 136 all_platforms="${all_platforms} x86_64-darwin13-gcc"
 137 all_platforms="${all_platforms} x86_64-linux-gcc"
 138 all_platforms="${all_platforms} x86_64-linux-icc"
 139 all_platforms="${all_platforms} x86_64-solaris-gcc"
 140 all_platforms="${all_platforms} x86_64-win64-gcc"
 141 all_platforms="${all_platforms} x86_64-win64-vs8"
 142 all_platforms="${all_platforms} x86_64-win64-vs9"
 143 all_platforms="${all_platforms} x86_64-win64-vs10"
 144 all_platforms="${all_platforms} x86_64-win64-vs11"
 145 all_platforms="${all_platforms} x86_64-win64-vs12"
 146 all_platforms="${all_platforms} universal-darwin8-gcc"
 147 all_platforms="${all_platforms} universal-darwin9-gcc"
 148 all_platforms="${all_platforms} universal-darwin10-gcc"
 149 all_platforms="${all_platforms} universal-darwin11-gcc"
 150 all_platforms="${all_platforms} universal-darwin12-gcc"
 151 all_platforms="${all_platforms} universal-darwin13-gcc"
 152 all_platforms="${all_platforms} generic-gnu"
 153
 154 # all_targets is a list of all targets that can be configured
 155 # note that these should be in dependency order for now.
 156 all_targets="libs examples docs"
 157
 158 # all targets available are enabled, by default.
 159 for t in ${all_targets}; do
 160     [ -f ${source_path}/${t}.mk ] && enable_feature ${t}
 161 done
 162
 163 # check installed doxygen version
 164 doxy_version=$(doxygen --version 2>/dev/null)
 165 doxy_major=${doxy_version%%.*}
 166 if [ ${doxy_major:-0} -ge 1 ]; then
 167     doxy_version=${doxy_version#*.}
 168     doxy_minor=${doxy_version%%.*}
 169     doxy_patch=${doxy_version##*.}
 170
 171     [ $doxy_major -gt 1 ] && enable_feature doxygen
 172     [ $doxy_minor -gt 5 ] && enable_feature doxygen
 173     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable_feature doxygen
 174 fi
 175
 176 # install everything except the sources, by default. sources will have
 177 # to be enabled when doing dist builds, since that's no longer a common
 178 # case.
 179 enabled doxygen && php -v >/dev/null 2>&1 && enable_feature install_docs
 180 enable_feature install_bins
 181 enable_feature install_libs
 182
 183 enable_feature static
 184 enable_feature optimizations
 185 enable_feature fast_unaligned #allow unaligned accesses, if supported by hw
 186 enable_feature spatial_resampling
 187 enable_feature multithread
 188 enable_feature os_support
 189 enable_feature temporal_denoising
 190
 191 [ -d ${source_path}/../include ] && enable_feature alt_tree_layout
 192 for d in vp8 vp9; do
 193     [ -d ${source_path}/${d} ] && disable_feature alt_tree_layout;
 194 done
 195
 196 if ! enabled alt_tree_layout; then
 197 # development environment
 198 [ -d ${source_path}/vp8 ] && CODECS="${CODECS} vp8_encoder vp8_decoder"
 199 [ -d ${source_path}/vp9 ] && CODECS="${CODECS} vp9_encoder vp9_decoder"
 200 else
 201 # customer environment
 202 [ -f ${source_path}/../include/vpx/vp8cx.h ] && CODECS="${CODECS} vp8_encoder"
 203 [ -f ${source_path}/../include/vpx/vp8dx.h ] && CODECS="${CODECS} vp8_decoder"
 204 [ -f ${source_path}/../include/vpx/vp9cx.h ] && CODECS="${CODECS} vp9_encoder"
 205 [ -f ${source_path}/../include/vpx/vp9dx.h ] && CODECS="${CODECS} vp9_decoder"
 206 [ -f ${source_path}/../include/vpx/vp8cx.h ] || disable_feature vp8_encoder
 207 [ -f ${source_path}/../include/vpx/vp8dx.h ] || disable_feature vp8_decoder
 208 [ -f ${source_path}/../include/vpx/vp9cx.h ] || disable_feature vp9_encoder
 209 [ -f ${source_path}/../include/vpx/vp9dx.h ] || disable_feature vp9_decoder
 210
 211 [ -f ${source_path}/../lib/*/*mt.lib ] && soft_enable static_msvcrt
 212 fi
 213
 214 CODECS="$(echo ${CODECS} | tr ' ' '\n')"
 215 CODEC_FAMILIES="$(for c in ${CODECS}; do echo ${c%_*}; done | sort | uniq)"
 216
 217 ARCH_LIST="
 218     arm
 219     mips
 220     x86
 221     x86_64
 222     ppc32
 223     ppc64
 224 "
 225 ARCH_EXT_LIST="
 226     edsp
 227     media
 228     neon
 229
 230     mips32
 231     dspr2
 232
 233     mmx
 234     sse
 235     sse2
 236     sse3
 237     ssse3
 238     sse4_1
 239     avx
 240     avx2
 241
 242     altivec
 243 "
 244 HAVE_LIST="
 245     ${ARCH_EXT_LIST}
 246     vpx_ports
 247     stdint_h
 248     alt_tree_layout
 249     pthread_h
 250     sys_mman_h
 251     unistd_h
 252 "
 253 EXPERIMENT_LIST="
 254     multiple_arf
 255     non420
 256     alpha
 257 "
 258 CONFIG_LIST="
 259     external_build
 260     install_docs
 261     install_bins
 262     install_libs
 263     install_srcs
 264     use_x86inc
 265     debug
 266     gprof
 267     gcov
 268     rvct
 269     gcc
 270     msvs
 271     pic
 272     big_endian
 273
 274     codec_srcs
 275     debug_libs
 276     fast_unaligned
 277     mem_manager
 278     mem_tracker
 279     mem_checks
 280
 281     dequant_tokens
 282     dc_recon
 283     runtime_cpu_detect
 284     postproc
 285     vp9_postproc
 286     multithread
 287     internal_stats
 288     ${CODECS}
 289     ${CODEC_FAMILIES}
 290     encoders
 291     decoders
 292     static_msvcrt
 293     spatial_resampling
 294     realtime_only
 295     onthefly_bitpacking
 296     error_concealment
 297     shared
 298     static
 299     small
 300     postproc_visualizer
 301     os_support
 302     unit_tests
 303     decode_perf_tests
 304     multi_res_encoding
 305     temporal_denoising
 306     experimental
 307     decrypt
 308     ${EXPERIMENT_LIST}
 309 "
 310 CMDLINE_SELECT="
 311     external_build
 312     extra_warnings
 313     werror
 314     install_docs
 315     install_bins
 316     install_libs
 317     install_srcs
 318     debug
 319     gprof
 320     gcov
 321     pic
 322     use_x86inc
 323     optimizations
 324     ccache
 325     runtime_cpu_detect
 326     thumb
 327
 328     libs
 329     examples
 330     docs
 331     libc
 332     as
 333     fast_unaligned
 334     codec_srcs
 335     debug_libs
 336
 337     dequant_tokens
 338     dc_recon
 339     postproc
 340     vp9_postproc
 341     multithread
 342     internal_stats
 343     ${CODECS}
 344     ${CODEC_FAMILIES}
 345     static_msvcrt
 346     mem_tracker
 347     spatial_resampling
 348     realtime_only
 349     onthefly_bitpacking
 350     error_concealment
 351     shared
 352     static
 353     small
 354     postproc_visualizer
 355     unit_tests
 356     decode_perf_tests
 357     multi_res_encoding
 358     temporal_denoising
 359     experimental
 360     decrypt
 361 "
 362
 363 process_cmdline() {
 364     for opt do
 365         optval="${opt#*=}"
 366         case "$opt" in
 367         --disable-codecs) for c in ${CODECS}; do disable_feature $c; done ;;
 368         --enable-?*|--disable-?*)
 369         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
 370         if echo "${EXPERIMENT_LIST}" | grep "^ *$option\$" >/dev/null; then
 371             if enabled experimental; then
 372                 ${action}_feature $option
 373             else
 374                 log_echo "Ignoring $opt -- not in experimental mode."
 375             fi
 376         else
 377             process_common_cmdline $opt
 378         fi
 379         ;;
 380         *) process_common_cmdline "$opt"
 381         ;;
 382         esac
 383     done
 384 }
 385
 386 post_process_cmdline() {
 387     local c
 388
 389     # If the codec family is disabled, disable all components of that family.
 390     # If the codec family is enabled, enable all components of that family.
 391     log_echo "Configuring selected codecs"
 392     for c in ${CODECS}; do
 393         disabled ${c%%_*} && disable_feature ${c}
 394         enabled ${c%%_*} && enable_feature ${c}
 395     done
 396
 397     # Enable all detected codecs, if they haven't been disabled
 398     for c in ${CODECS}; do soft_enable $c; done
 399
 400     # Enable the codec family if any component of that family is enabled
 401     for c in ${CODECS}; do
 402         enabled $c && enable_feature ${c%_*}
 403     done
 404
 405     # Set the {en,de}coders variable if any algorithm in that class is enabled
 406     for c in ${CODECS}; do
 407         enabled ${c} && enable_feature ${c##*_}s
 408     done
 409 }
 410
 411
 412 process_targets() {
 413     enabled child || write_common_config_banner
 414     enabled universal || write_common_target_config_h  ${BUILD_PFX}vpx_config.h
 415
 416     # TODO: add host tools target (obj_int_extract, etc)
 417
 418     # For fat binaries, call configure recursively to configure for each
 419     # binary architecture to be included.
 420     if enabled universal; then
 421         # Call configure (ourselves) for each subarchitecture
 422         for arch in $fat_bin_archs; do
 423             BUILD_PFX=${arch}/ toolchain=${arch} $self --child $cmdline_args || exit $?
 424         done
 425     fi
 426
 427     # The write_common_config (config.mk) logic is deferred until after the
 428     # recursive calls to configure complete, because we want our universal
 429     # targets to be executed last.
 430     write_common_config_targets
 431     enabled universal && echo "FAT_ARCHS=${fat_bin_archs}" >> config.mk
 432
 433     # Calculate the default distribution name, based on the enabled features
 434     local cf
 435     local DIST_DIR=vpx
 436     for cf in $CODEC_FAMILIES; do
 437         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
 438             DIST_DIR="${DIST_DIR}-${cf}"
 439         elif enabled ${cf}_encoder; then
 440             DIST_DIR="${DIST_DIR}-${cf}cx"
 441         elif enabled ${cf}_decoder; then
 442             DIST_DIR="${DIST_DIR}-${cf}dx"
 443         fi
 444     done
 445     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
 446     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
 447     ! enabled postproc && ! enabled vp9_postproc && DIST_DIR="${DIST_DIR}-nopost"
 448     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
 449     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
 450     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
 451     case "${tgt_os}" in
 452     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
 453           DIST_DIR="${DIST_DIR}-${tgt_cc}"
 454           ;;
 455     esac
 456     if [ -f "${source_path}/build/make/version.sh" ]; then
 457         local ver=`"$source_path/build/make/version.sh" --bare $source_path`
 458         DIST_DIR="${DIST_DIR}-${ver}"
 459         VERSION_STRING=${ver}
 460         ver=${ver%%-*}
 461         VERSION_PATCH=${ver##*.}
 462         ver=${ver%.*}
 463         VERSION_MINOR=${ver##*.}
 464         ver=${ver#v}
 465         VERSION_MAJOR=${ver%.*}
 466     fi
 467     enabled child || cat <<EOF >> config.mk
 468
 469 PREFIX=${prefix}
 470 ifeq (\$(MAKECMDGOALS),dist)
 471 DIST_DIR?=${DIST_DIR}
 472 else
 473 DIST_DIR?=\$(DESTDIR)${prefix}
 474 endif
 475 LIBSUBDIR=${libdir##${prefix}/}
 476
 477 VERSION_STRING=${VERSION_STRING}
 478
 479 VERSION_MAJOR=${VERSION_MAJOR}
 480 VERSION_MINOR=${VERSION_MINOR}
 481 VERSION_PATCH=${VERSION_PATCH}
 482
 483 CONFIGURE_ARGS=${CONFIGURE_ARGS}
 484 EOF
 485     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
 486
 487     #
 488     # Write makefiles for all enabled targets
 489     #
 490     for tgt in libs examples docs solution; do
 491         local tgt_fn="$tgt-$toolchain.mk"
 492
 493         if enabled $tgt; then
 494             echo "Creating makefiles for ${toolchain} ${tgt}"
 495             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
 496             #write_${tgt}_config
 497         fi
 498     done
 499
 500 }
 501
 502 process_detect() {
 503     if enabled shared; then
 504         # Can only build shared libs on a subset of platforms. Doing this check
 505         # here rather than at option parse time because the target auto-detect
 506         # magic happens after the command line has been parsed.
 507         if ! enabled linux; then
 508             if enabled gnu; then
 509                 echo "--enable-shared is only supported on ELF; assuming this is OK"
 510             else
 511                 die "--enable-shared only supported on ELF for now"
 512             fi
 513         fi
 514     fi
 515     if [ -z "$CC" ] || enabled external_build; then
 516         echo "Bypassing toolchain for environment detection."
 517         enable_feature external_build
 518         check_header() {
 519             log fake_check_header "$@"
 520             header=$1
 521             shift
 522             var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
 523             disable_feature $var
 524             # Headers common to all environments
 525             case $header in
 526                 stdio.h)
 527                     true;
 528                 ;;
 529                 *)
 530                     local result=false
 531                     for d in "$@"; do
 532                         [ -f "${d##-I}/$header" ] && result=true && break
 533                     done
 534                     ${result:-true}
 535             esac && enable_feature $var
 536
 537             # Specialize windows and POSIX environments.
 538             case $toolchain in
 539                 *-win*-*)
 540                     case $header-$toolchain in
 541                         stdint*-gcc) true;;
 542                         *) false;;
 543                     esac && enable_feature $var
 544                     ;;
 545                 *)
 546                     case $header in
 547                         stdint.h) true;;
 548                         pthread.h) true;;
 549                         sys/mman.h) true;;
 550                         unistd.h) true;;
 551                         *) false;;
 552                     esac && enable_feature $var
 553             esac
 554             enabled $var
 555         }
 556         check_ld() {
 557             true
 558         }
 559     fi
 560     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
 561     check_ld <<EOF || die "Toolchain is unable to link executables"
 562 int main(void) {return 0;}
 563 EOF
 564     # check system headers
 565     check_header stdint.h
 566     check_header pthread.h
 567     check_header sys/mman.h
 568     check_header unistd.h # for sysconf(3) and friends.
 569
 570     check_header vpx/vpx_integer.h -I${source_path} && enable_feature vpx_ports
 571 }
 572
 573 process_toolchain() {
 574     process_common_toolchain
 575
 576     # Handle universal binaries for this architecture
 577     case $toolchain in
 578         universal-darwin*)
 579             local darwin_ver=${tgt_os##darwin}
 580
 581             # Snow Leopard (10.6/darwin10) dropped support for PPC
 582             # Include PPC support for all prior versions
 583             if [ $darwin_ver -lt 10 ]; then
 584                 fat_bin_archs="$fat_bin_archs ppc32-${tgt_os}-gcc"
 585             fi
 586
 587             # Tiger (10.4/darwin8) brought support for x86
 588             if [ $darwin_ver -ge 8 ]; then
 589                 fat_bin_archs="$fat_bin_archs x86-${tgt_os}-${tgt_cc}"
 590             fi
 591
 592             # Leopard (10.5/darwin9) brought 64 bit support
 593             if [ $darwin_ver -ge 9 ]; then
 594                 fat_bin_archs="$fat_bin_archs x86_64-${tgt_os}-${tgt_cc}"
 595             fi
 596             ;;
 597     esac
 598
 599
 600     # Enable some useful compiler flags
 601     if enabled gcc; then
 602         enabled werror && check_add_cflags -Werror
 603         check_add_cflags -Wall
 604         check_add_cflags -Wdeclaration-after-statement
 605         check_add_cflags -Wdisabled-optimization
 606         check_add_cflags -Wpointer-arith
 607         check_add_cflags -Wtype-limits
 608         check_add_cflags -Wcast-qual
 609         check_add_cflags -Wvla
 610         check_add_cflags -Wimplicit-function-declaration
 611         check_add_cflags -Wuninitialized
 612         check_add_cflags -Wunused-variable
 613         case ${CC} in
 614           *clang*)
 615               # libvpx and/or clang have issues with aliasing:
 616               # https://code.google.com/p/webm/issues/detail?id=603
 617               # work around them until they are fixed
 618               check_add_cflags -fno-strict-aliasing
 619           ;;
 620           *) check_add_cflags -Wunused-but-set-variable ;;
 621         esac
 622         enabled extra_warnings || check_add_cflags -Wno-unused-function
 623     fi
 624
 625     if enabled icc; then
 626         enabled werror && check_add_cflags -Werror
 627         check_add_cflags -Wall
 628         check_add_cflags -Wpointer-arith
 629
 630         # ICC has a number of floating point optimizations that we disable
 631         # in favor of deterministic output WRT to other compilers
 632         add_cflags -fp-model precise
 633     fi
 634
 635     # Enable extra, harmless warnings. These might provide additional insight
 636     # to what the compiler is doing and why, but in general, but they shouldn't
 637     # be treated as fatal, even if we're treating warnings as errors.
 638     GCC_EXTRA_WARNINGS="
 639         -Wdisabled-optimization
 640         -Winline
 641     "
 642     enabled gcc && EXTRA_WARNINGS="${GCC_EXTRA_WARNINGS}"
 643     RVCT_EXTRA_WARNINGS="
 644         --remarks
 645     "
 646     enabled rvct && EXTRA_WARNINGS="${RVCT_EXTRA_WARNINGS}"
 647     if enabled extra_warnings; then
 648         for w in ${EXTRA_WARNINGS}; do
 649             check_add_cflags ${w}
 650             enabled gcc && enabled werror && check_add_cflags -Wno-error=${w}
 651         done
 652     fi
 653
 654     # ccache only really works on gcc toolchains
 655     enabled gcc || soft_disable ccache
 656     if enabled mips; then
 657         enable_feature dequant_tokens
 658         enable_feature dc_recon
 659     fi
 660
 661     if enabled internal_stats; then
 662         enable_feature vp9_postproc
 663     fi
 664
 665     # Enable the postbuild target if building for visual studio.
 666     case "$tgt_cc" in
 667         vs*) enable_feature msvs
 668              enable_feature solution
 669              vs_version=${tgt_cc##vs}
 670              case $vs_version in
 671              [789])
 672                  VCPROJ_SFX=vcproj
 673                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_proj.sh
 674                  ;;
 675              10|11|12)
 676                  VCPROJ_SFX=vcxproj
 677                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_vcxproj.sh
 678                  ;;
 679              esac
 680              all_targets="${all_targets} solution"
 681              INLINE="__forceinline"
 682         ;;
 683     esac
 684
 685     # Other toolchain specific defaults
 686     case $toolchain in x86*|ppc*|universal*) soft_enable postproc;; esac
 687
 688     if enabled postproc_visualizer; then
 689         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
 690     fi
 691
 692     # Enable unit tests by default if we have a working C++ compiler.
 693     case "$toolchain" in
 694         *-vs*)
 695             soft_enable unit_tests
 696         ;;
 697         *-android-*)
 698             # GTestLog must be modified to use Android logging utilities.
 699         ;;
 700         *-darwin-*)
 701             # iOS/ARM builds do not work with gtest. This does not match
 702             # x86 targets.
 703         ;;
 704         *-win*)
 705             # Some mingw toolchains don't have pthread available by default.
 706             # Treat these more like visual studio where threading in gtest
 707             # would be disabled for the same reason.
 708             check_cxx "$@" <<EOF && soft_enable unit_tests
 709 int z;
 710 EOF
 711         ;;
 712         *)
 713             enabled pthread_h && check_cxx "$@" <<EOF && soft_enable unit_tests
 714 int z;
 715 EOF
 716         ;;
 717     esac
 718 }
 719
 720
 721 ##
 722 ## END APPLICATION SPECIFIC CONFIGURATION
 723 ##
 724 CONFIGURE_ARGS="$@"
 725 process "$@"
 726 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
 727 cat <<EOF >> ${BUILD_PFX}vpx_config.c
 728 static const char* const cfg = "$CONFIGURE_ARGS";
 729 const char *vpx_codec_build_config(void) {return cfg;}
 730 EOF