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   ${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_codec_srcs}            in/exclude codec library source code
  35   ${toggle_debug_libs}            in/exclude debug version of libraries
  36   ${toggle_static_msvcrt}         use static MSVCRT (VS builds only)
  37   ${toggle_vp9_highbitdepth}      use VP9 high bit depth (10/12) profiles
  38   ${toggle_vp8}                   VP8 codec support
  39   ${toggle_vp9}                   VP9 codec support
  40   ${toggle_internal_stats}        output of encoder internal stats for debug, if supported (encoders)
  41   ${toggle_postproc}              postprocessing
  42   ${toggle_vp9_postproc}          vp9 specific postprocessing
  43   ${toggle_multithread}           multithreaded encoding and decoding
  44   ${toggle_spatial_resampling}    spatial sampling (scaling) support
  45   ${toggle_realtime_only}         enable this option while building for real-time encoding
  46   ${toggle_onthefly_bitpacking}   enable on-the-fly bitpacking in real-time encoding
  47   ${toggle_error_concealment}     enable this option to get a decoder which is able to conceal losses
  48   ${toggle_coefficient_range_checking}
  49                                   enable decoder to check if intermediate
  50                                   transform coefficients are in valid range
  51   ${toggle_runtime_cpu_detect}    runtime cpu detection
  52   ${toggle_shared}                shared library support
  53   ${toggle_static}                static library support
  54   ${toggle_small}                 favor smaller size over speed
  55   ${toggle_postproc_visualizer}   macro block / block level visualizers
  56   ${toggle_multi_res_encoding}    enable multiple-resolution encoding
  57   ${toggle_temporal_denoising}    enable temporal denoising and disable the spatial denoiser
  58   ${toggle_vp9_temporal_denoising}
  59                                   enable vp9 temporal denoising
  60   ${toggle_webm_io}               enable input from and output to WebM container
  61   ${toggle_libyuv}                enable libyuv
  62
  63 Codecs:
  64   Codecs can be selectively enabled or disabled individually, or by family:
  65       --disable-<codec>
  66   is equivalent to:
  67       --disable-<codec>-encoder
  68       --disable-<codec>-decoder
  69
  70   Codecs available in this distribution:
  71 EOF
  72 #restore editor state '
  73
  74     family="";
  75     last_family="";
  76     c="";
  77     str="";
  78     for c in ${CODECS}; do
  79         family=${c%_*}
  80         if [ "${family}" != "${last_family}" ]; then
  81             [ -z "${str}" ] || echo "${str}"
  82             str="$(printf '    %10s:' ${family})"
  83         fi
  84         str="${str} $(printf '%10s' ${c#*_})"
  85         last_family=${family}
  86     done
  87     echo "${str}"
  88     show_help_post
  89 }
  90
  91 ##
  92 ## BEGIN APPLICATION SPECIFIC CONFIGURATION
  93 ##
  94
  95 # all_platforms is a list of all supported target platforms. Maintain
  96 # alphabetically by architecture, generic-gnu last.
  97 all_platforms="${all_platforms} armv6-darwin-gcc"
  98 all_platforms="${all_platforms} armv6-linux-rvct"
  99 all_platforms="${all_platforms} armv6-linux-gcc"
 100 all_platforms="${all_platforms} armv6-none-rvct"
 101 all_platforms="${all_platforms} arm64-darwin-gcc"
 102 all_platforms="${all_platforms} armv7-android-gcc"   #neon Cortex-A8
 103 all_platforms="${all_platforms} armv7-darwin-gcc"    #neon Cortex-A8
 104 all_platforms="${all_platforms} armv7-linux-rvct"    #neon Cortex-A8
 105 all_platforms="${all_platforms} armv7-linux-gcc"     #neon Cortex-A8
 106 all_platforms="${all_platforms} armv7-none-rvct"     #neon Cortex-A8
 107 all_platforms="${all_platforms} armv7-win32-vs11"
 108 all_platforms="${all_platforms} armv7-win32-vs12"
 109 all_platforms="${all_platforms} armv7s-darwin-gcc"
 110 all_platforms="${all_platforms} mips32-linux-gcc"
 111 all_platforms="${all_platforms} mips64-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="${all_platforms} x86-darwin14-gcc"
 123 all_platforms="${all_platforms} x86-iphonesimulator-gcc"
 124 all_platforms="${all_platforms} x86-linux-gcc"
 125 all_platforms="${all_platforms} x86-linux-icc"
 126 all_platforms="${all_platforms} x86-os2-gcc"
 127 all_platforms="${all_platforms} x86-solaris-gcc"
 128 all_platforms="${all_platforms} x86-win32-gcc"
 129 all_platforms="${all_platforms} x86-win32-vs7"
 130 all_platforms="${all_platforms} x86-win32-vs8"
 131 all_platforms="${all_platforms} x86-win32-vs9"
 132 all_platforms="${all_platforms} x86-win32-vs10"
 133 all_platforms="${all_platforms} x86-win32-vs11"
 134 all_platforms="${all_platforms} x86-win32-vs12"
 135 all_platforms="${all_platforms} x86_64-darwin9-gcc"
 136 all_platforms="${all_platforms} x86_64-darwin10-gcc"
 137 all_platforms="${all_platforms} x86_64-darwin11-gcc"
 138 all_platforms="${all_platforms} x86_64-darwin12-gcc"
 139 all_platforms="${all_platforms} x86_64-darwin13-gcc"
 140 all_platforms="${all_platforms} x86_64-darwin14-gcc"
 141 all_platforms="${all_platforms} x86_64-iphonesimulator-gcc"
 142 all_platforms="${all_platforms} x86_64-linux-gcc"
 143 all_platforms="${all_platforms} x86_64-linux-icc"
 144 all_platforms="${all_platforms} x86_64-solaris-gcc"
 145 all_platforms="${all_platforms} x86_64-win64-gcc"
 146 all_platforms="${all_platforms} x86_64-win64-vs8"
 147 all_platforms="${all_platforms} x86_64-win64-vs9"
 148 all_platforms="${all_platforms} x86_64-win64-vs10"
 149 all_platforms="${all_platforms} x86_64-win64-vs11"
 150 all_platforms="${all_platforms} x86_64-win64-vs12"
 151 all_platforms="${all_platforms} universal-darwin8-gcc"
 152 all_platforms="${all_platforms} universal-darwin9-gcc"
 153 all_platforms="${all_platforms} universal-darwin10-gcc"
 154 all_platforms="${all_platforms} universal-darwin11-gcc"
 155 all_platforms="${all_platforms} universal-darwin12-gcc"
 156 all_platforms="${all_platforms} universal-darwin13-gcc"
 157 all_platforms="${all_platforms} universal-darwin14-gcc"
 158 all_platforms="${all_platforms} generic-gnu"
 159
 160 # all_targets is a list of all targets that can be configured
 161 # note that these should be in dependency order for now.
 162 all_targets="libs examples docs"
 163
 164 # all targets available are enabled, by default.
 165 for t in ${all_targets}; do
 166     [ -f "${source_path}/${t}.mk" ] && enable_feature ${t}
 167 done
 168
 169 if ! perl --version >/dev/null; then
 170     die "Perl is required to build"
 171 fi
 172
 173
 174 if [ "`cd \"${source_path}\" && pwd`" != "`pwd`" ]; then
 175   # test to see if source_path already configured
 176   if [ -f "${source_path}/vpx_config.h" ]; then
 177     die "source directory already configured; run 'make distclean' there first"
 178   fi
 179 fi
 180
 181 # check installed doxygen version
 182 doxy_version=$(doxygen --version 2>/dev/null)
 183 doxy_major=${doxy_version%%.*}
 184 if [ ${doxy_major:-0} -ge 1 ]; then
 185     doxy_version=${doxy_version#*.}
 186     doxy_minor=${doxy_version%%.*}
 187     doxy_patch=${doxy_version##*.}
 188
 189     [ $doxy_major -gt 1 ] && enable_feature doxygen
 190     [ $doxy_minor -gt 5 ] && enable_feature doxygen
 191     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable_feature doxygen
 192 fi
 193
 194 # install everything except the sources, by default. sources will have
 195 # to be enabled when doing dist builds, since that's no longer a common
 196 # case.
 197 enabled doxygen && enable_feature install_docs
 198 enable_feature install_bins
 199 enable_feature install_libs
 200
 201 enable_feature static
 202 enable_feature optimizations
 203 enable_feature dependency_tracking
 204 enable_feature spatial_resampling
 205 enable_feature multithread
 206 enable_feature os_support
 207 enable_feature temporal_denoising
 208
 209 [ -d "${source_path}/../include" ] && enable_feature alt_tree_layout
 210 for d in vp8 vp9; do
 211     [ -d "${source_path}/${d}" ] && disable_feature alt_tree_layout;
 212 done
 213
 214 if ! enabled alt_tree_layout; then
 215 # development environment
 216 [ -d "${source_path}/vp8" ] && CODECS="${CODECS} vp8_encoder vp8_decoder"
 217 [ -d "${source_path}/vp9" ] && CODECS="${CODECS} vp9_encoder vp9_decoder"
 218 else
 219 # customer environment
 220 [ -f "${source_path}/../include/vpx/vp8cx.h" ] && CODECS="${CODECS} vp8_encoder"
 221 [ -f "${source_path}/../include/vpx/vp8dx.h" ] && CODECS="${CODECS} vp8_decoder"
 222 [ -f "${source_path}/../include/vpx/vp9cx.h" ] && CODECS="${CODECS} vp9_encoder"
 223 [ -f "${source_path}/../include/vpx/vp9dx.h" ] && CODECS="${CODECS} vp9_decoder"
 224 [ -f "${source_path}/../include/vpx/vp8cx.h" ] || disable_feature vp8_encoder
 225 [ -f "${source_path}/../include/vpx/vp8dx.h" ] || disable_feature vp8_decoder
 226 [ -f "${source_path}/../include/vpx/vp9cx.h" ] || disable_feature vp9_encoder
 227 [ -f "${source_path}/../include/vpx/vp9dx.h" ] || disable_feature vp9_decoder
 228
 229 [ -f "${source_path}/../lib/*/*mt.lib" ] && soft_enable static_msvcrt
 230 fi
 231
 232 CODECS="$(echo ${CODECS} | tr ' ' '\n')"
 233 CODEC_FAMILIES="$(for c in ${CODECS}; do echo ${c%_*}; done | sort | uniq)"
 234
 235 ARCH_LIST="
 236     arm
 237     mips
 238     x86
 239     x86_64
 240 "
 241 ARCH_EXT_LIST="
 242     edsp
 243     media
 244     neon
 245     neon_asm
 246
 247     mips32
 248     dspr2
 249     msa
 250     mips64
 251
 252     mmx
 253     sse
 254     sse2
 255     sse3
 256     ssse3
 257     sse4_1
 258     avx
 259     avx2
 260 "
 261 HAVE_LIST="
 262     ${ARCH_EXT_LIST}
 263     vpx_ports
 264     stdint_h
 265     alt_tree_layout
 266     pthread_h
 267     sys_mman_h
 268     unistd_h
 269 "
 270 EXPERIMENT_LIST="
 271     spatial_svc
 272     fp_mb_stats
 273     emulate_hardware
 274 "
 275 CONFIG_LIST="
 276     dependency_tracking
 277     external_build
 278     install_docs
 279     install_bins
 280     install_libs
 281     install_srcs
 282     use_x86inc
 283     debug
 284     gprof
 285     gcov
 286     rvct
 287     gcc
 288     msvs
 289     pic
 290     big_endian
 291
 292     codec_srcs
 293     debug_libs
 294
 295     dequant_tokens
 296     dc_recon
 297     runtime_cpu_detect
 298     postproc
 299     vp9_postproc
 300     multithread
 301     internal_stats
 302     ${CODECS}
 303     ${CODEC_FAMILIES}
 304     encoders
 305     decoders
 306     static_msvcrt
 307     spatial_resampling
 308     realtime_only
 309     onthefly_bitpacking
 310     error_concealment
 311     shared
 312     static
 313     small
 314     postproc_visualizer
 315     os_support
 316     unit_tests
 317     webm_io
 318     libyuv
 319     decode_perf_tests
 320     encode_perf_tests
 321     multi_res_encoding
 322     temporal_denoising
 323     vp9_temporal_denoising
 324     coefficient_range_checking
 325     vp9_highbitdepth
 326     experimental
 327     size_limit
 328     ${EXPERIMENT_LIST}
 329 "
 330 CMDLINE_SELECT="
 331     dependency_tracking
 332     external_build
 333     extra_warnings
 334     werror
 335     install_docs
 336     install_bins
 337     install_libs
 338     install_srcs
 339     debug
 340     gprof
 341     gcov
 342     pic
 343     use_x86inc
 344     optimizations
 345     ccache
 346     runtime_cpu_detect
 347     thumb
 348
 349     libs
 350     examples
 351     docs
 352     libc
 353     as
 354     size_limit
 355     codec_srcs
 356     debug_libs
 357
 358     dequant_tokens
 359     dc_recon
 360     postproc
 361     vp9_postproc
 362     multithread
 363     internal_stats
 364     ${CODECS}
 365     ${CODEC_FAMILIES}
 366     static_msvcrt
 367     spatial_resampling
 368     realtime_only
 369     onthefly_bitpacking
 370     error_concealment
 371     shared
 372     static
 373     small
 374     postproc_visualizer
 375     unit_tests
 376     webm_io
 377     libyuv
 378     decode_perf_tests
 379     encode_perf_tests
 380     multi_res_encoding
 381     temporal_denoising
 382     vp9_temporal_denoising
 383     coefficient_range_checking
 384     vp9_highbitdepth
 385     experimental
 386 "
 387
 388 process_cmdline() {
 389     for opt do
 390         optval="${opt#*=}"
 391         case "$opt" in
 392         --disable-codecs) for c in ${CODECS}; do disable_feature $c; done ;;
 393         --enable-?*|--disable-?*)
 394         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
 395         if echo "${EXPERIMENT_LIST}" | grep "^ *$option\$" >/dev/null; then
 396             if enabled experimental; then
 397                 ${action}_feature $option
 398             else
 399                 log_echo "Ignoring $opt -- not in experimental mode."
 400             fi
 401         else
 402             process_common_cmdline $opt
 403         fi
 404         ;;
 405         *) process_common_cmdline "$opt"
 406         ;;
 407         esac
 408     done
 409 }
 410
 411 post_process_cmdline() {
 412     c=""
 413
 414     # If the codec family is disabled, disable all components of that family.
 415     # If the codec family is enabled, enable all components of that family.
 416     log_echo "Configuring selected codecs"
 417     for c in ${CODECS}; do
 418         disabled ${c%%_*} && disable_feature ${c}
 419         enabled ${c%%_*} && enable_feature ${c}
 420     done
 421
 422     # Enable all detected codecs, if they haven't been disabled
 423     for c in ${CODECS}; do soft_enable $c; done
 424
 425     # Enable the codec family if any component of that family is enabled
 426     for c in ${CODECS}; do
 427         enabled $c && enable_feature ${c%_*}
 428     done
 429
 430     # Set the {en,de}coders variable if any algorithm in that class is enabled
 431     for c in ${CODECS}; do
 432         enabled ${c} && enable_feature ${c##*_}s
 433     done
 434 }
 435
 436
 437 process_targets() {
 438     enabled child || write_common_config_banner
 439     enabled universal || write_common_target_config_h  ${BUILD_PFX}vpx_config.h
 440
 441     # For fat binaries, call configure recursively to configure for each
 442     # binary architecture to be included.
 443     if enabled universal; then
 444         # Call configure (ourselves) for each subarchitecture
 445         for arch in $fat_bin_archs; do
 446             BUILD_PFX=${arch}/ toolchain=${arch} $self --child $cmdline_args || exit $?
 447         done
 448     fi
 449
 450     # The write_common_config (config.mk) logic is deferred until after the
 451     # recursive calls to configure complete, because we want our universal
 452     # targets to be executed last.
 453     write_common_config_targets
 454     enabled universal && echo "FAT_ARCHS=${fat_bin_archs}" >> config.mk
 455
 456     # Calculate the default distribution name, based on the enabled features
 457     cf=""
 458     DIST_DIR=vpx
 459     for cf in $CODEC_FAMILIES; do
 460         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
 461             DIST_DIR="${DIST_DIR}-${cf}"
 462         elif enabled ${cf}_encoder; then
 463             DIST_DIR="${DIST_DIR}-${cf}cx"
 464         elif enabled ${cf}_decoder; then
 465             DIST_DIR="${DIST_DIR}-${cf}dx"
 466         fi
 467     done
 468     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
 469     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
 470     ! enabled postproc && ! enabled vp9_postproc && DIST_DIR="${DIST_DIR}-nopost"
 471     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
 472     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
 473     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
 474     case "${tgt_os}" in
 475     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
 476           DIST_DIR="${DIST_DIR}-${tgt_cc}"
 477           ;;
 478     esac
 479     if [ -f "${source_path}/build/make/version.sh" ]; then
 480         ver=`"$source_path/build/make/version.sh" --bare "$source_path"`
 481         DIST_DIR="${DIST_DIR}-${ver}"
 482         VERSION_STRING=${ver}
 483         ver=${ver%%-*}
 484         VERSION_PATCH=${ver##*.}
 485         ver=${ver%.*}
 486         VERSION_MINOR=${ver##*.}
 487         ver=${ver#v}
 488         VERSION_MAJOR=${ver%.*}
 489     fi
 490     enabled child || cat <<EOF >> config.mk
 491
 492 PREFIX=${prefix}
 493 ifeq (\$(MAKECMDGOALS),dist)
 494 DIST_DIR?=${DIST_DIR}
 495 else
 496 DIST_DIR?=\$(DESTDIR)${prefix}
 497 endif
 498 LIBSUBDIR=${libdir##${prefix}/}
 499
 500 VERSION_STRING=${VERSION_STRING}
 501
 502 VERSION_MAJOR=${VERSION_MAJOR}
 503 VERSION_MINOR=${VERSION_MINOR}
 504 VERSION_PATCH=${VERSION_PATCH}
 505
 506 CONFIGURE_ARGS=${CONFIGURE_ARGS}
 507 EOF
 508     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
 509
 510     #
 511     # Write makefiles for all enabled targets
 512     #
 513     for tgt in libs examples docs solution; do
 514         tgt_fn="$tgt-$toolchain.mk"
 515
 516         if enabled $tgt; then
 517             echo "Creating makefiles for ${toolchain} ${tgt}"
 518             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
 519             #write_${tgt}_config
 520         fi
 521     done
 522
 523 }
 524
 525 process_detect() {
 526     if enabled shared; then
 527         # Can only build shared libs on a subset of platforms. Doing this check
 528         # here rather than at option parse time because the target auto-detect
 529         # magic happens after the command line has been parsed.
 530         if ! enabled linux; then
 531             if enabled gnu; then
 532                 echo "--enable-shared is only supported on ELF; assuming this is OK"
 533             else
 534                 die "--enable-shared only supported on ELF for now"
 535             fi
 536         fi
 537     fi
 538     if [ -z "$CC" ] || enabled external_build; then
 539         echo "Bypassing toolchain for environment detection."
 540         enable_feature external_build
 541         check_header() {
 542             log fake_check_header "$@"
 543             header=$1
 544             shift
 545             var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
 546             disable_feature $var
 547             # Headers common to all environments
 548             case $header in
 549                 stdio.h)
 550                     true;
 551                 ;;
 552                 *)
 553                     result=false
 554                     for d in "$@"; do
 555                         [ -f "${d##-I}/$header" ] && result=true && break
 556                     done
 557                     ${result:-true}
 558             esac && enable_feature $var
 559
 560             # Specialize windows and POSIX environments.
 561             case $toolchain in
 562                 *-win*-*)
 563                     case $header-$toolchain in
 564                         stdint*-gcc) true;;
 565                         *) false;;
 566                     esac && enable_feature $var
 567                     ;;
 568                 *)
 569                     case $header in
 570                         stdint.h) true;;
 571                         pthread.h) true;;
 572                         sys/mman.h) true;;
 573                         unistd.h) true;;
 574                         *) false;;
 575                     esac && enable_feature $var
 576             esac
 577             enabled $var
 578         }
 579         check_ld() {
 580             true
 581         }
 582     fi
 583     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
 584     check_ld <<EOF || die "Toolchain is unable to link executables"
 585 int main(void) {return 0;}
 586 EOF
 587     # check system headers
 588     check_header stdint.h
 589     check_header pthread.h
 590     check_header sys/mman.h
 591     check_header unistd.h # for sysconf(3) and friends.
 592
 593     check_header vpx/vpx_integer.h -I${source_path} && enable_feature vpx_ports
 594 }
 595
 596 process_toolchain() {
 597     process_common_toolchain
 598
 599     # Handle universal binaries for this architecture
 600     case $toolchain in
 601         universal-darwin*)
 602             darwin_ver=${tgt_os##darwin}
 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 $toolchain in x86*|universal*) soft_enable postproc;; esac
 705
 706     if enabled postproc_visualizer; then
 707         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
 708     fi
 709
 710     # Enable unit tests by default if we have a working C++ compiler.
 711     case "$toolchain" in
 712         *-vs*)
 713             soft_enable unit_tests
 714             soft_enable webm_io
 715             soft_enable libyuv
 716         ;;
 717         *-android-*)
 718             soft_enable webm_io
 719             soft_enable libyuv
 720             # GTestLog must be modified to use Android logging utilities.
 721         ;;
 722         *-darwin-*)
 723             # iOS/ARM builds do not work with gtest. This does not match
 724             # x86 targets.
 725         ;;
 726         *-iphonesimulator-*)
 727             soft_enable webm_io
 728             soft_enable libyuv
 729         ;;
 730         *-win*)
 731             # Some mingw toolchains don't have pthread available by default.
 732             # Treat these more like visual studio where threading in gtest
 733             # would be disabled for the same reason.
 734             check_cxx "$@" <<EOF && soft_enable unit_tests
 735 int z;
 736 EOF
 737             check_cxx "$@" <<EOF && soft_enable webm_io
 738 int z;
 739 EOF
 740             check_cxx "$@" <<EOF && soft_enable libyuv
 741 int z;
 742 EOF
 743         ;;
 744         *)
 745             enabled pthread_h && check_cxx "$@" <<EOF && soft_enable unit_tests
 746 int z;
 747 EOF
 748             check_cxx "$@" <<EOF && soft_enable webm_io
 749 int z;
 750 EOF
 751             check_cxx "$@" <<EOF && soft_enable libyuv
 752 int z;
 753 EOF
 754         ;;
 755     esac
 756     # libwebm needs to be linked with C++ standard library
 757     enabled webm_io && LD=${CXX}
 758 }
 759
 760
 761 ##
 762 ## END APPLICATION SPECIFIC CONFIGURATION
 763 ##
 764 CONFIGURE_ARGS="$@"
 765 process "$@"
 766 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
 767 cat <<EOF >> ${BUILD_PFX}vpx_config.c
 768 static const char* const cfg = "$CONFIGURE_ARGS";
 769 const char *vpx_codec_build_config(void) {return cfg;}
 770 EOF