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   ${toggle_encode_perf_tests}     build encoder perf tests with unit tests
  29   --cpu=CPU                       tune for the specified CPU (ARM: cortex-a8, X86: sse3)
  30   --libc=PATH                     path to alternate libc
  31   --size-limit=WxH                max size to allow in the decoder
  32   --as={yasm|nasm|auto}           use specified assembler [auto, yasm preferred]
  33   --sdk-path=PATH                 path to root of sdk (android builds only)
  34   ${toggle_fast_unaligned}        don't use unaligned accesses, even when
  35                                   supported by hardware [auto]
  36   ${toggle_codec_srcs}            in/exclude codec library source code
  37   ${toggle_debug_libs}            in/exclude debug version of libraries
  38   ${toggle_static_msvcrt}         use static MSVCRT (VS builds only)
  39   ${toggle_vp8}                   VP8 codec support
  40   ${toggle_vp9}                   VP9 codec support
  41   ${toggle_internal_stats}        output of encoder internal stats for debug, if supported (encoders)
  42   ${toggle_mem_tracker}           track memory usage
  43   ${toggle_postproc}              postprocessing
  44   ${toggle_vp9_postproc}          vp9 specific postprocessing
  45   ${toggle_multithread}           multithreaded encoding and decoding
  46   ${toggle_spatial_resampling}    spatial sampling (scaling) support
  47   ${toggle_realtime_only}         enable this option while building for real-time encoding
  48   ${toggle_onthefly_bitpacking}   enable on-the-fly bitpacking in real-time encoding
  49   ${toggle_error_concealment}     enable this option to get a decoder which is able to conceal losses
  50   ${toggle_coefficient_range_checking}
  51                                   enable decoder to check if intermediate
  52                                   transform coefficients are in valid range
  53   ${toggle_runtime_cpu_detect}    runtime cpu detection
  54   ${toggle_shared}                shared library support
  55   ${toggle_static}                static library support
  56   ${toggle_small}                 favor smaller size over speed
  57   ${toggle_postproc_visualizer}   macro block / block level visualizers
  58   ${toggle_multi_res_encoding}    enable multiple-resolution encoding
  59   ${toggle_temporal_denoising}    enable temporal denoising and disable the spatial denoiser
  60   ${toggle_vp9_temporal_denoising}
  61                                   enable vp9 temporal denoising
  62   ${toggle_webm_io}               enable input from and output to WebM container
  63   ${toggle_libyuv}                enable libyuv
  64
  65 Codecs:
  66   Codecs can be selectively enabled or disabled individually, or by family:
  67       --disable-<codec>
  68   is equivalent to:
  69       --disable-<codec>-encoder
  70       --disable-<codec>-decoder
  71
  72   Codecs available in this distribution:
  73 EOF
  74 #restore editor state '
  75
  76     family="";
  77     last_family="";
  78     c="";
  79     str="";
  80     for c in ${CODECS}; do
  81         family=${c%_*}
  82         if [ "${family}" != "${last_family}" ]; then
  83             [ -z "${str}" ] || echo "${str}"
  84             str="$(printf '    %10s:' ${family})"
  85         fi
  86         str="${str} $(printf '%10s' ${c#*_})"
  87         last_family=${family}
  88     done
  89     echo "${str}"
  90     show_help_post
  91 }
  92
  93 ##
  94 ## BEGIN APPLICATION SPECIFIC CONFIGURATION
  95 ##
  96
  97 # all_platforms is a list of all supported target platforms. Maintain
  98 # alphabetically by architecture, generic-gnu last.
  99 all_platforms="${all_platforms} armv6-darwin-gcc"
 100 all_platforms="${all_platforms} armv6-linux-rvct"
 101 all_platforms="${all_platforms} armv6-linux-gcc"
 102 all_platforms="${all_platforms} armv6-none-rvct"
 103 all_platforms="${all_platforms} arm64-darwin-gcc"
 104 all_platforms="${all_platforms} armv7-android-gcc"   #neon Cortex-A8
 105 all_platforms="${all_platforms} armv7-darwin-gcc"    #neon Cortex-A8
 106 all_platforms="${all_platforms} armv7-linux-rvct"    #neon Cortex-A8
 107 all_platforms="${all_platforms} armv7-linux-gcc"     #neon Cortex-A8
 108 all_platforms="${all_platforms} armv7-none-rvct"     #neon Cortex-A8
 109 all_platforms="${all_platforms} armv7-win32-vs11"
 110 all_platforms="${all_platforms} armv7-win32-vs12"
 111 all_platforms="${all_platforms} armv7s-darwin-gcc"
 112 all_platforms="${all_platforms} mips32-linux-gcc"
 113 all_platforms="${all_platforms} mips64-linux-gcc"
 114 all_platforms="${all_platforms} ppc32-darwin8-gcc"
 115 all_platforms="${all_platforms} ppc32-darwin9-gcc"
 116 all_platforms="${all_platforms} ppc32-linux-gcc"
 117 all_platforms="${all_platforms} ppc64-darwin8-gcc"
 118 all_platforms="${all_platforms} ppc64-darwin9-gcc"
 119 all_platforms="${all_platforms} ppc64-linux-gcc"
 120 all_platforms="${all_platforms} sparc-solaris-gcc"
 121 all_platforms="${all_platforms} x86-android-gcc"
 122 all_platforms="${all_platforms} x86-darwin8-gcc"
 123 all_platforms="${all_platforms} x86-darwin8-icc"
 124 all_platforms="${all_platforms} x86-darwin9-gcc"
 125 all_platforms="${all_platforms} x86-darwin9-icc"
 126 all_platforms="${all_platforms} x86-darwin10-gcc"
 127 all_platforms="${all_platforms} x86-darwin11-gcc"
 128 all_platforms="${all_platforms} x86-darwin12-gcc"
 129 all_platforms="${all_platforms} x86-darwin13-gcc"
 130 all_platforms="${all_platforms} x86-iphonesimulator-gcc"
 131 all_platforms="${all_platforms} x86-linux-gcc"
 132 all_platforms="${all_platforms} x86-linux-icc"
 133 all_platforms="${all_platforms} x86-os2-gcc"
 134 all_platforms="${all_platforms} x86-solaris-gcc"
 135 all_platforms="${all_platforms} x86-win32-gcc"
 136 all_platforms="${all_platforms} x86-win32-vs7"
 137 all_platforms="${all_platforms} x86-win32-vs8"
 138 all_platforms="${all_platforms} x86-win32-vs9"
 139 all_platforms="${all_platforms} x86-win32-vs10"
 140 all_platforms="${all_platforms} x86-win32-vs11"
 141 all_platforms="${all_platforms} x86-win32-vs12"
 142 all_platforms="${all_platforms} x86_64-darwin9-gcc"
 143 all_platforms="${all_platforms} x86_64-darwin10-gcc"
 144 all_platforms="${all_platforms} x86_64-darwin11-gcc"
 145 all_platforms="${all_platforms} x86_64-darwin12-gcc"
 146 all_platforms="${all_platforms} x86_64-darwin13-gcc"
 147 all_platforms="${all_platforms} x86_64-iphonesimulator-gcc"
 148 all_platforms="${all_platforms} x86_64-linux-gcc"
 149 all_platforms="${all_platforms} x86_64-linux-icc"
 150 all_platforms="${all_platforms} x86_64-solaris-gcc"
 151 all_platforms="${all_platforms} x86_64-win64-gcc"
 152 all_platforms="${all_platforms} x86_64-win64-vs8"
 153 all_platforms="${all_platforms} x86_64-win64-vs9"
 154 all_platforms="${all_platforms} x86_64-win64-vs10"
 155 all_platforms="${all_platforms} x86_64-win64-vs11"
 156 all_platforms="${all_platforms} x86_64-win64-vs12"
 157 all_platforms="${all_platforms} universal-darwin8-gcc"
 158 all_platforms="${all_platforms} universal-darwin9-gcc"
 159 all_platforms="${all_platforms} universal-darwin10-gcc"
 160 all_platforms="${all_platforms} universal-darwin11-gcc"
 161 all_platforms="${all_platforms} universal-darwin12-gcc"
 162 all_platforms="${all_platforms} universal-darwin13-gcc"
 163 all_platforms="${all_platforms} generic-gnu"
 164
 165 # all_targets is a list of all targets that can be configured
 166 # note that these should be in dependency order for now.
 167 all_targets="libs examples docs"
 168
 169 # all targets available are enabled, by default.
 170 for t in ${all_targets}; do
 171     [ -f "${source_path}/${t}.mk" ] && enable_feature ${t}
 172 done
 173
 174 if ! perl --version >/dev/null; then
 175     die "Perl is required to build"
 176 fi
 177
 178
 179 if [ "`cd \"${source_path}\" && pwd`" != "`pwd`" ]; then
 180   # test to see if source_path already configured
 181   if [ -f "${source_path}/vpx_config.h" ]; then
 182     die "source directory already configured; run 'make distclean' there first"
 183   fi
 184 fi
 185
 186 # check installed doxygen version
 187 doxy_version=$(doxygen --version 2>/dev/null)
 188 doxy_major=${doxy_version%%.*}
 189 if [ ${doxy_major:-0} -ge 1 ]; then
 190     doxy_version=${doxy_version#*.}
 191     doxy_minor=${doxy_version%%.*}
 192     doxy_patch=${doxy_version##*.}
 193
 194     [ $doxy_major -gt 1 ] && enable_feature doxygen
 195     [ $doxy_minor -gt 5 ] && enable_feature doxygen
 196     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable_feature doxygen
 197 fi
 198
 199 # install everything except the sources, by default. sources will have
 200 # to be enabled when doing dist builds, since that's no longer a common
 201 # case.
 202 enabled doxygen && enable_feature install_docs
 203 enable_feature install_bins
 204 enable_feature install_libs
 205
 206 enable_feature static
 207 enable_feature optimizations
 208 enable_feature fast_unaligned #allow unaligned accesses, if supported by hw
 209 enable_feature spatial_resampling
 210 enable_feature multithread
 211 enable_feature os_support
 212 enable_feature temporal_denoising
 213
 214 [ -d "${source_path}/../include" ] && enable_feature alt_tree_layout
 215 for d in vp8 vp9; do
 216     [ -d "${source_path}/${d}" ] && disable_feature alt_tree_layout;
 217 done
 218
 219 if ! enabled alt_tree_layout; then
 220 # development environment
 221 [ -d "${source_path}/vp8" ] && CODECS="${CODECS} vp8_encoder vp8_decoder"
 222 [ -d "${source_path}/vp9" ] && CODECS="${CODECS} vp9_encoder vp9_decoder"
 223 else
 224 # customer environment
 225 [ -f "${source_path}/../include/vpx/vp8cx.h" ] && CODECS="${CODECS} vp8_encoder"
 226 [ -f "${source_path}/../include/vpx/vp8dx.h" ] && CODECS="${CODECS} vp8_decoder"
 227 [ -f "${source_path}/../include/vpx/vp9cx.h" ] && CODECS="${CODECS} vp9_encoder"
 228 [ -f "${source_path}/../include/vpx/vp9dx.h" ] && CODECS="${CODECS} vp9_decoder"
 229 [ -f "${source_path}/../include/vpx/vp8cx.h" ] || disable_feature vp8_encoder
 230 [ -f "${source_path}/../include/vpx/vp8dx.h" ] || disable_feature vp8_decoder
 231 [ -f "${source_path}/../include/vpx/vp9cx.h" ] || disable_feature vp9_encoder
 232 [ -f "${source_path}/../include/vpx/vp9dx.h" ] || disable_feature vp9_decoder
 233
 234 [ -f "${source_path}/../lib/*/*mt.lib" ] && soft_enable static_msvcrt
 235 fi
 236
 237 CODECS="$(echo ${CODECS} | tr ' ' '\n')"
 238 CODEC_FAMILIES="$(for c in ${CODECS}; do echo ${c%_*}; done | sort | uniq)"
 239
 240 ARCH_LIST="
 241     arm
 242     mips
 243     x86
 244     x86_64
 245     ppc32
 246     ppc64
 247 "
 248 ARCH_EXT_LIST="
 249     edsp
 250     media
 251     neon
 252     neon_asm
 253
 254     mips32
 255     dspr2
 256
 257     mips64
 258
 259     mmx
 260     sse
 261     sse2
 262     sse3
 263     ssse3
 264     sse4_1
 265     avx
 266     avx2
 267
 268     altivec
 269 "
 270 HAVE_LIST="
 271     ${ARCH_EXT_LIST}
 272     vpx_ports
 273     stdint_h
 274     alt_tree_layout
 275     pthread_h
 276     sys_mman_h
 277     unistd_h
 278 "
 279 EXPERIMENT_LIST="
 280     spatial_svc
 281     fp_mb_stats
 282     emulate_hardware
 283 "
 284 CONFIG_LIST="
 285     external_build
 286     install_docs
 287     install_bins
 288     install_libs
 289     install_srcs
 290     use_x86inc
 291     debug
 292     gprof
 293     gcov
 294     rvct
 295     gcc
 296     msvs
 297     pic
 298     big_endian
 299
 300     codec_srcs
 301     debug_libs
 302     fast_unaligned
 303     mem_manager
 304     mem_tracker
 305     mem_checks
 306
 307     dequant_tokens
 308     dc_recon
 309     runtime_cpu_detect
 310     postproc
 311     vp9_postproc
 312     multithread
 313     internal_stats
 314     ${CODECS}
 315     ${CODEC_FAMILIES}
 316     encoders
 317     decoders
 318     static_msvcrt
 319     spatial_resampling
 320     realtime_only
 321     onthefly_bitpacking
 322     error_concealment
 323     shared
 324     static
 325     small
 326     postproc_visualizer
 327     os_support
 328     unit_tests
 329     webm_io
 330     libyuv
 331     decode_perf_tests
 332     encode_perf_tests
 333     multi_res_encoding
 334     temporal_denoising
 335     vp9_temporal_denoising
 336     coefficient_range_checking
 337     vp9_highbitdepth
 338     experimental
 339     size_limit
 340     ${EXPERIMENT_LIST}
 341 "
 342 CMDLINE_SELECT="
 343     external_build
 344     extra_warnings
 345     werror
 346     install_docs
 347     install_bins
 348     install_libs
 349     install_srcs
 350     debug
 351     gprof
 352     gcov
 353     pic
 354     use_x86inc
 355     optimizations
 356     ccache
 357     runtime_cpu_detect
 358     thumb
 359
 360     libs
 361     examples
 362     docs
 363     libc
 364     as
 365     size_limit
 366     fast_unaligned
 367     codec_srcs
 368     debug_libs
 369
 370     dequant_tokens
 371     dc_recon
 372     postproc
 373     vp9_postproc
 374     multithread
 375     internal_stats
 376     ${CODECS}
 377     ${CODEC_FAMILIES}
 378     static_msvcrt
 379     mem_tracker
 380     spatial_resampling
 381     realtime_only
 382     onthefly_bitpacking
 383     error_concealment
 384     shared
 385     static
 386     small
 387     postproc_visualizer
 388     unit_tests
 389     webm_io
 390     libyuv
 391     decode_perf_tests
 392     encode_perf_tests
 393     multi_res_encoding
 394     temporal_denoising
 395     vp9_temporal_denoising
 396     coefficient_range_checking
 397     vp9_highbitdepth
 398     experimental
 399 "
 400
 401 process_cmdline() {
 402     for opt do
 403         optval="${opt#*=}"
 404         case "$opt" in
 405         --disable-codecs) for c in ${CODECS}; do disable_feature $c; done ;;
 406         --enable-?*|--disable-?*)
 407         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
 408         if echo "${EXPERIMENT_LIST}" | grep "^ *$option\$" >/dev/null; then
 409             if enabled experimental; then
 410                 ${action}_feature $option
 411             else
 412                 log_echo "Ignoring $opt -- not in experimental mode."
 413             fi
 414         else
 415             process_common_cmdline $opt
 416         fi
 417         ;;
 418         *) process_common_cmdline "$opt"
 419         ;;
 420         esac
 421     done
 422 }
 423
 424 post_process_cmdline() {
 425     c=""
 426
 427     # If the codec family is disabled, disable all components of that family.
 428     # If the codec family is enabled, enable all components of that family.
 429     log_echo "Configuring selected codecs"
 430     for c in ${CODECS}; do
 431         disabled ${c%%_*} && disable_feature ${c}
 432         enabled ${c%%_*} && enable_feature ${c}
 433     done
 434
 435     # Enable all detected codecs, if they haven't been disabled
 436     for c in ${CODECS}; do soft_enable $c; done
 437
 438     # Enable the codec family if any component of that family is enabled
 439     for c in ${CODECS}; do
 440         enabled $c && enable_feature ${c%_*}
 441     done
 442
 443     # Set the {en,de}coders variable if any algorithm in that class is enabled
 444     for c in ${CODECS}; do
 445         enabled ${c} && enable_feature ${c##*_}s
 446     done
 447 }
 448
 449
 450 process_targets() {
 451     enabled child || write_common_config_banner
 452     enabled universal || write_common_target_config_h  ${BUILD_PFX}vpx_config.h
 453
 454     # For fat binaries, call configure recursively to configure for each
 455     # binary architecture to be included.
 456     if enabled universal; then
 457         # Call configure (ourselves) for each subarchitecture
 458         for arch in $fat_bin_archs; do
 459             BUILD_PFX=${arch}/ toolchain=${arch} $self --child $cmdline_args || exit $?
 460         done
 461     fi
 462
 463     # The write_common_config (config.mk) logic is deferred until after the
 464     # recursive calls to configure complete, because we want our universal
 465     # targets to be executed last.
 466     write_common_config_targets
 467     enabled universal && echo "FAT_ARCHS=${fat_bin_archs}" >> config.mk
 468
 469     # Calculate the default distribution name, based on the enabled features
 470     cf=""
 471     DIST_DIR=vpx
 472     for cf in $CODEC_FAMILIES; do
 473         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
 474             DIST_DIR="${DIST_DIR}-${cf}"
 475         elif enabled ${cf}_encoder; then
 476             DIST_DIR="${DIST_DIR}-${cf}cx"
 477         elif enabled ${cf}_decoder; then
 478             DIST_DIR="${DIST_DIR}-${cf}dx"
 479         fi
 480     done
 481     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
 482     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
 483     ! enabled postproc && ! enabled vp9_postproc && DIST_DIR="${DIST_DIR}-nopost"
 484     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
 485     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
 486     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
 487     case "${tgt_os}" in
 488     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
 489           DIST_DIR="${DIST_DIR}-${tgt_cc}"
 490           ;;
 491     esac
 492     if [ -f "${source_path}/build/make/version.sh" ]; then
 493         ver=`"$source_path/build/make/version.sh" --bare "$source_path"`
 494         DIST_DIR="${DIST_DIR}-${ver}"
 495         VERSION_STRING=${ver}
 496         ver=${ver%%-*}
 497         VERSION_PATCH=${ver##*.}
 498         ver=${ver%.*}
 499         VERSION_MINOR=${ver##*.}
 500         ver=${ver#v}
 501         VERSION_MAJOR=${ver%.*}
 502     fi
 503     enabled child || cat <<EOF >> config.mk
 504
 505 PREFIX=${prefix}
 506 ifeq (\$(MAKECMDGOALS),dist)
 507 DIST_DIR?=${DIST_DIR}
 508 else
 509 DIST_DIR?=\$(DESTDIR)${prefix}
 510 endif
 511 LIBSUBDIR=${libdir##${prefix}/}
 512
 513 VERSION_STRING=${VERSION_STRING}
 514
 515 VERSION_MAJOR=${VERSION_MAJOR}
 516 VERSION_MINOR=${VERSION_MINOR}
 517 VERSION_PATCH=${VERSION_PATCH}
 518
 519 CONFIGURE_ARGS=${CONFIGURE_ARGS}
 520 EOF
 521     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
 522
 523     #
 524     # Write makefiles for all enabled targets
 525     #
 526     for tgt in libs examples docs solution; do
 527         tgt_fn="$tgt-$toolchain.mk"
 528
 529         if enabled $tgt; then
 530             echo "Creating makefiles for ${toolchain} ${tgt}"
 531             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
 532             #write_${tgt}_config
 533         fi
 534     done
 535
 536 }
 537
 538 process_detect() {
 539     if enabled shared; then
 540         # Can only build shared libs on a subset of platforms. Doing this check
 541         # here rather than at option parse time because the target auto-detect
 542         # magic happens after the command line has been parsed.
 543         if ! enabled linux; then
 544             if enabled gnu; then
 545                 echo "--enable-shared is only supported on ELF; assuming this is OK"
 546             else
 547                 die "--enable-shared only supported on ELF for now"
 548             fi
 549         fi
 550     fi
 551     if [ -z "$CC" ] || enabled external_build; then
 552         echo "Bypassing toolchain for environment detection."
 553         enable_feature external_build
 554         check_header() {
 555             log fake_check_header "$@"
 556             header=$1
 557             shift
 558             var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
 559             disable_feature $var
 560             # Headers common to all environments
 561             case $header in
 562                 stdio.h)
 563                     true;
 564                 ;;
 565                 *)
 566                     result=false
 567                     for d in "$@"; do
 568                         [ -f "${d##-I}/$header" ] && result=true && break
 569                     done
 570                     ${result:-true}
 571             esac && enable_feature $var
 572
 573             # Specialize windows and POSIX environments.
 574             case $toolchain in
 575                 *-win*-*)
 576                     case $header-$toolchain in
 577                         stdint*-gcc) true;;
 578                         *) false;;
 579                     esac && enable_feature $var
 580                     ;;
 581                 *)
 582                     case $header in
 583                         stdint.h) true;;
 584                         pthread.h) true;;
 585                         sys/mman.h) true;;
 586                         unistd.h) true;;
 587                         *) false;;
 588                     esac && enable_feature $var
 589             esac
 590             enabled $var
 591         }
 592         check_ld() {
 593             true
 594         }
 595     fi
 596     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
 597     check_ld <<EOF || die "Toolchain is unable to link executables"
 598 int main(void) {return 0;}
 599 EOF
 600     # check system headers
 601     check_header stdint.h
 602     check_header pthread.h
 603     check_header sys/mman.h
 604     check_header unistd.h # for sysconf(3) and friends.
 605
 606     check_header vpx/vpx_integer.h -I${source_path} && enable_feature vpx_ports
 607 }
 608
 609 process_toolchain() {
 610     process_common_toolchain
 611
 612     # Handle universal binaries for this architecture
 613     case $toolchain in
 614         universal-darwin*)
 615             darwin_ver=${tgt_os##darwin}
 616
 617             # Snow Leopard (10.6/darwin10) dropped support for PPC
 618             # Include PPC support for all prior versions
 619             if [ $darwin_ver -lt 10 ]; then
 620                 fat_bin_archs="$fat_bin_archs ppc32-${tgt_os}-gcc"
 621             fi
 622
 623             # Tiger (10.4/darwin8) brought support for x86
 624             if [ $darwin_ver -ge 8 ]; then
 625                 fat_bin_archs="$fat_bin_archs x86-${tgt_os}-${tgt_cc}"
 626             fi
 627
 628             # Leopard (10.5/darwin9) brought 64 bit support
 629             if [ $darwin_ver -ge 9 ]; then
 630                 fat_bin_archs="$fat_bin_archs x86_64-${tgt_os}-${tgt_cc}"
 631             fi
 632             ;;
 633     esac
 634
 635
 636     # Enable some useful compiler flags
 637     if enabled gcc; then
 638         enabled werror && check_add_cflags -Werror
 639         check_add_cflags -Wall
 640         check_add_cflags -Wdeclaration-after-statement
 641         check_add_cflags -Wdisabled-optimization
 642         check_add_cflags -Wpointer-arith
 643         check_add_cflags -Wtype-limits
 644         check_add_cflags -Wcast-qual
 645         check_add_cflags -Wvla
 646         check_add_cflags -Wimplicit-function-declaration
 647         check_add_cflags -Wuninitialized
 648         check_add_cflags -Wunused-variable
 649         case ${CC} in
 650           *clang*)
 651               # libvpx and/or clang have issues with aliasing:
 652               # https://code.google.com/p/webm/issues/detail?id=603
 653               # work around them until they are fixed
 654               check_add_cflags -fno-strict-aliasing
 655           ;;
 656           *) check_add_cflags -Wunused-but-set-variable ;;
 657         esac
 658         enabled extra_warnings || check_add_cflags -Wno-unused-function
 659     fi
 660
 661     if enabled icc; then
 662         enabled werror && check_add_cflags -Werror
 663         check_add_cflags -Wall
 664         check_add_cflags -Wpointer-arith
 665
 666         # ICC has a number of floating point optimizations that we disable
 667         # in favor of deterministic output WRT to other compilers
 668         add_cflags -fp-model precise
 669     fi
 670
 671     # Enable extra, harmless warnings. These might provide additional insight
 672     # to what the compiler is doing and why, but in general, but they shouldn't
 673     # be treated as fatal, even if we're treating warnings as errors.
 674     GCC_EXTRA_WARNINGS="
 675         -Wdisabled-optimization
 676         -Winline
 677     "
 678     enabled gcc && EXTRA_WARNINGS="${GCC_EXTRA_WARNINGS}"
 679     RVCT_EXTRA_WARNINGS="
 680         --remarks
 681     "
 682     enabled rvct && EXTRA_WARNINGS="${RVCT_EXTRA_WARNINGS}"
 683     if enabled extra_warnings; then
 684         for w in ${EXTRA_WARNINGS}; do
 685             check_add_cflags ${w}
 686             enabled gcc && enabled werror && check_add_cflags -Wno-error=${w}
 687         done
 688     fi
 689
 690     # ccache only really works on gcc toolchains
 691     enabled gcc || soft_disable ccache
 692     if enabled mips; then
 693         enable_feature dequant_tokens
 694         enable_feature dc_recon
 695     fi
 696
 697     if enabled internal_stats; then
 698         enable_feature vp9_postproc
 699     fi
 700
 701     # Enable the postbuild target if building for visual studio.
 702     case "$tgt_cc" in
 703         vs*) enable_feature msvs
 704              enable_feature solution
 705              vs_version=${tgt_cc##vs}
 706              case $vs_version in
 707              [789])
 708                  VCPROJ_SFX=vcproj
 709                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_proj.sh
 710                  ;;
 711              10|11|12)
 712                  VCPROJ_SFX=vcxproj
 713                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_vcxproj.sh
 714                  enabled werror && gen_vcproj_cmd="${gen_vcproj_cmd} --enable-werror"
 715                  ;;
 716              esac
 717              all_targets="${all_targets} solution"
 718              INLINE="__forceinline"
 719         ;;
 720     esac
 721
 722     # Other toolchain specific defaults
 723     case $toolchain in x86*|ppc*|universal*) soft_enable postproc;; esac
 724
 725     if enabled postproc_visualizer; then
 726         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
 727     fi
 728
 729     # Enable unit tests by default if we have a working C++ compiler.
 730     case "$toolchain" in
 731         *-vs*)
 732             soft_enable unit_tests
 733             soft_enable webm_io
 734             soft_enable libyuv
 735         ;;
 736         *-android-*)
 737             soft_enable webm_io
 738             soft_enable libyuv
 739             # GTestLog must be modified to use Android logging utilities.
 740         ;;
 741         *-darwin-*)
 742             # iOS/ARM builds do not work with gtest. This does not match
 743             # x86 targets.
 744         ;;
 745         *-iphonesimulator-*)
 746             soft_enable webm_io
 747             soft_enable libyuv
 748         ;;
 749         *-win*)
 750             # Some mingw toolchains don't have pthread available by default.
 751             # Treat these more like visual studio where threading in gtest
 752             # would be disabled for the same reason.
 753             check_cxx "$@" <<EOF && soft_enable unit_tests
 754 int z;
 755 EOF
 756             check_cxx "$@" <<EOF && soft_enable webm_io
 757 int z;
 758 EOF
 759             check_cxx "$@" <<EOF && soft_enable libyuv
 760 int z;
 761 EOF
 762         ;;
 763         *)
 764             enabled pthread_h && check_cxx "$@" <<EOF && soft_enable unit_tests
 765 int z;
 766 EOF
 767             check_cxx "$@" <<EOF && soft_enable webm_io
 768 int z;
 769 EOF
 770             check_cxx "$@" <<EOF && soft_enable libyuv
 771 int z;
 772 EOF
 773         ;;
 774     esac
 775     # libwebm needs to be linked with C++ standard library
 776     enabled webm_io && LD=${CXX}
 777 }
 778
 779
 780 ##
 781 ## END APPLICATION SPECIFIC CONFIGURATION
 782 ##
 783 CONFIGURE_ARGS="$@"
 784 process "$@"
 785 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
 786 cat <<EOF >> ${BUILD_PFX}vpx_config.c
 787 static const char* const cfg = "$CONFIGURE_ARGS";
 788 const char *vpx_codec_build_config(void) {return cfg;}
 789 EOF