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_md5}                   support for output of checksum data
  36   ${toggle_static_msvcrt}         use static MSVCRT (VS builds only)
  37   ${toggle_vp8}                   VP8 codec support
  38   ${toggle_vp9}                   VP9 codec support
  39   ${toggle_internal_stats}        output of encoder internal stats for debug, if supported (encoders)
  40   ${toggle_mem_tracker}           track memory usage
  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_runtime_cpu_detect}    runtime cpu detection
  49   ${toggle_shared}                shared library support
  50   ${toggle_static}                static library support
  51   ${toggle_small}                 favor smaller size over speed
  52   ${toggle_postproc_visualizer}   macro block / block level visualizers
  53   ${toggle_multi_res_encoding}    enable multiple-resolution encoding
  54   ${toggle_temporal_denoising}    enable temporal denoising and disable the spatial denoiser
  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 ${t}
 162 done
 163
 164 # check installed doxygen version
 165 doxy_version=$(doxygen --version 2>/dev/null)
 166 doxy_major=${doxy_version%%.*}
 167 if [ ${doxy_major:-0} -ge 1 ]; then
 168     doxy_version=${doxy_version#*.}
 169     doxy_minor=${doxy_version%%.*}
 170     doxy_patch=${doxy_version##*.}
 171
 172     [ $doxy_major -gt 1 ] && enable_feature doxygen
 173     [ $doxy_minor -gt 5 ] && enable_feature doxygen
 174     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable_feature doxygen
 175 fi
 176
 177 # install everything except the sources, by default. sources will have
 178 # to be enabled when doing dist builds, since that's no longer a common
 179 # case.
 180 enabled doxygen && php -v >/dev/null 2>&1 && enable_feature install_docs
 181 enable_feature install_bins
 182 enable_feature install_libs
 183
 184 enable_feature static
 185 enable_feature optimizations
 186 enable_feature fast_unaligned #allow unaligned accesses, if supported by hw
 187 enable_feature md5
 188 enable_feature spatial_resampling
 189 enable_feature multithread
 190 enable_feature os_support
 191 enable_feature temporal_denoising
 192
 193 [ -d ${source_path}/../include ] && enable_feature alt_tree_layout
 194 for d in vp8 vp9; do
 195     [ -d ${source_path}/${d} ] && disable_feature alt_tree_layout;
 196 done
 197
 198 if ! enabled alt_tree_layout; then
 199 # development environment
 200 [ -d ${source_path}/vp8 ] && CODECS="${CODECS} vp8_encoder vp8_decoder"
 201 [ -d ${source_path}/vp9 ] && CODECS="${CODECS} vp9_encoder vp9_decoder"
 202 else
 203 # customer environment
 204 [ -f ${source_path}/../include/vpx/vp8cx.h ] && CODECS="${CODECS} vp8_encoder"
 205 [ -f ${source_path}/../include/vpx/vp8dx.h ] && CODECS="${CODECS} vp8_decoder"
 206 [ -f ${source_path}/../include/vpx/vp9cx.h ] && CODECS="${CODECS} vp9_encoder"
 207 [ -f ${source_path}/../include/vpx/vp9dx.h ] && CODECS="${CODECS} vp9_decoder"
 208 [ -f ${source_path}/../include/vpx/vp8cx.h ] || disable_feature vp8_encoder
 209 [ -f ${source_path}/../include/vpx/vp8dx.h ] || disable_feature vp8_decoder
 210 [ -f ${source_path}/../include/vpx/vp9cx.h ] || disable_feature vp9_encoder
 211 [ -f ${source_path}/../include/vpx/vp9dx.h ] || disable_feature vp9_decoder
 212
 213 [ -f ${source_path}/../lib/*/*mt.lib ] && soft_enable static_msvcrt
 214 fi
 215
 216 CODECS="$(echo ${CODECS} | tr ' ' '\n')"
 217 CODEC_FAMILIES="$(for c in ${CODECS}; do echo ${c%_*}; done | sort | uniq)"
 218
 219 ARCH_LIST="
 220     arm
 221     mips
 222     x86
 223     x86_64
 224     ppc32
 225     ppc64
 226 "
 227 ARCH_EXT_LIST="
 228     edsp
 229     media
 230     neon
 231
 232     mips32
 233     dspr2
 234
 235     mmx
 236     sse
 237     sse2
 238     sse3
 239     ssse3
 240     sse4_1
 241     avx
 242     avx2
 243
 244     altivec
 245 "
 246 HAVE_LIST="
 247     ${ARCH_EXT_LIST}
 248     vpx_ports
 249     stdint_h
 250     alt_tree_layout
 251     pthread_h
 252     sys_mman_h
 253     unistd_h
 254 "
 255 EXPERIMENT_LIST="
 256     multiple_arf
 257     non420
 258     alpha
 259 "
 260 CONFIG_LIST="
 261     external_build
 262     install_docs
 263     install_bins
 264     install_libs
 265     install_srcs
 266     use_x86inc
 267     debug
 268     gprof
 269     gcov
 270     rvct
 271     gcc
 272     msvs
 273     pic
 274     big_endian
 275
 276     codec_srcs
 277     debug_libs
 278     fast_unaligned
 279     mem_manager
 280     mem_tracker
 281     mem_checks
 282     md5
 283
 284     dequant_tokens
 285     dc_recon
 286     runtime_cpu_detect
 287     postproc
 288     vp9_postproc
 289     multithread
 290     internal_stats
 291     ${CODECS}
 292     ${CODEC_FAMILIES}
 293     encoders
 294     decoders
 295     static_msvcrt
 296     spatial_resampling
 297     realtime_only
 298     onthefly_bitpacking
 299     error_concealment
 300     shared
 301     static
 302     small
 303     postproc_visualizer
 304     os_support
 305     unit_tests
 306     decode_perf_tests
 307     multi_res_encoding
 308     temporal_denoising
 309     experimental
 310     decrypt
 311     ${EXPERIMENT_LIST}
 312 "
 313 CMDLINE_SELECT="
 314     external_build
 315     extra_warnings
 316     werror
 317     install_docs
 318     install_bins
 319     install_libs
 320     install_srcs
 321     debug
 322     gprof
 323     gcov
 324     pic
 325     use_x86inc
 326     optimizations
 327     ccache
 328     runtime_cpu_detect
 329     thumb
 330
 331     libs
 332     examples
 333     docs
 334     libc
 335     as
 336     fast_unaligned
 337     codec_srcs
 338     debug_libs
 339     md5
 340
 341     dequant_tokens
 342     dc_recon
 343     postproc
 344     vp9_postproc
 345     multithread
 346     internal_stats
 347     ${CODECS}
 348     ${CODEC_FAMILIES}
 349     static_msvcrt
 350     mem_tracker
 351     spatial_resampling
 352     realtime_only
 353     onthefly_bitpacking
 354     error_concealment
 355     shared
 356     static
 357     small
 358     postproc_visualizer
 359     unit_tests
 360     decode_perf_tests
 361     multi_res_encoding
 362     temporal_denoising
 363     experimental
 364     decrypt
 365 "
 366
 367 process_cmdline() {
 368     for opt do
 369         optval="${opt#*=}"
 370         case "$opt" in
 371         --disable-codecs) for c in ${CODECS}; do disable_feature $c; done ;;
 372         --enable-?*|--disable-?*)
 373         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
 374         if echo "${EXPERIMENT_LIST}" | grep "^ *$option\$" >/dev/null; then
 375             if enabled experimental; then
 376                 ${action}_feature $option
 377             else
 378                 log_echo "Ignoring $opt -- not in experimental mode."
 379             fi
 380         else
 381             process_common_cmdline $opt
 382         fi
 383         ;;
 384         *) process_common_cmdline "$opt"
 385         ;;
 386         esac
 387     done
 388 }
 389
 390 post_process_cmdline() {
 391     local c
 392
 393     # If the codec family is disabled, disable all components of that family.
 394     # If the codec family is enabled, enable all components of that family.
 395     log_echo "Configuring selected codecs"
 396     for c in ${CODECS}; do
 397         disabled ${c%%_*} && disable_feature ${c}
 398         enabled ${c%%_*} && enable_feature ${c}
 399     done
 400
 401     # Enable all detected codecs, if they haven't been disabled
 402     for c in ${CODECS}; do soft_enable $c; done
 403
 404     # Enable the codec family if any component of that family is enabled
 405     for c in ${CODECS}; do
 406         enabled $c && enable_feature ${c%_*}
 407     done
 408
 409     # Set the {en,de}coders variable if any algorithm in that class is enabled
 410     for c in ${CODECS}; do
 411         enabled ${c} && enable_feature ${c##*_}s
 412     done
 413 }
 414
 415
 416 process_targets() {
 417     enabled child || write_common_config_banner
 418     enabled universal || write_common_target_config_h  ${BUILD_PFX}vpx_config.h
 419
 420     # TODO: add host tools target (obj_int_extract, etc)
 421
 422     # For fat binaries, call configure recursively to configure for each
 423     # binary architecture to be included.
 424     if enabled universal; then
 425         # Call configure (ourselves) for each subarchitecture
 426         for arch in $fat_bin_archs; do
 427             BUILD_PFX=${arch}/ toolchain=${arch} $self --child $cmdline_args || exit $?
 428         done
 429     fi
 430
 431     # The write_common_config (config.mk) logic is deferred until after the
 432     # recursive calls to configure complete, because we want our universal
 433     # targets to be executed last.
 434     write_common_config_targets
 435     enabled universal && echo "FAT_ARCHS=${fat_bin_archs}" >> config.mk
 436
 437     # Calculate the default distribution name, based on the enabled features
 438     local cf
 439     local DIST_DIR=vpx
 440     for cf in $CODEC_FAMILIES; do
 441         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
 442             DIST_DIR="${DIST_DIR}-${cf}"
 443         elif enabled ${cf}_encoder; then
 444             DIST_DIR="${DIST_DIR}-${cf}cx"
 445         elif enabled ${cf}_decoder; then
 446             DIST_DIR="${DIST_DIR}-${cf}dx"
 447         fi
 448     done
 449     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
 450     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
 451     ! enabled postproc && ! enabled vp9_postproc && DIST_DIR="${DIST_DIR}-nopost"
 452     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
 453     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
 454     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
 455     case "${tgt_os}" in
 456     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
 457           DIST_DIR="${DIST_DIR}-${tgt_cc}"
 458           ;;
 459     esac
 460     if [ -f "${source_path}/build/make/version.sh" ]; then
 461         local ver=`"$source_path/build/make/version.sh" --bare $source_path`
 462         DIST_DIR="${DIST_DIR}-${ver}"
 463         VERSION_STRING=${ver}
 464         ver=${ver%%-*}
 465         VERSION_PATCH=${ver##*.}
 466         ver=${ver%.*}
 467         VERSION_MINOR=${ver##*.}
 468         ver=${ver#v}
 469         VERSION_MAJOR=${ver%.*}
 470     fi
 471     enabled child || cat <<EOF >> config.mk
 472
 473 PREFIX=${prefix}
 474 ifeq (\$(MAKECMDGOALS),dist)
 475 DIST_DIR?=${DIST_DIR}
 476 else
 477 DIST_DIR?=\$(DESTDIR)${prefix}
 478 endif
 479 LIBSUBDIR=${libdir##${prefix}/}
 480
 481 VERSION_STRING=${VERSION_STRING}
 482
 483 VERSION_MAJOR=${VERSION_MAJOR}
 484 VERSION_MINOR=${VERSION_MINOR}
 485 VERSION_PATCH=${VERSION_PATCH}
 486
 487 CONFIGURE_ARGS=${CONFIGURE_ARGS}
 488 EOF
 489     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
 490
 491     #
 492     # Write makefiles for all enabled targets
 493     #
 494     for tgt in libs examples docs solution; do
 495         local tgt_fn="$tgt-$toolchain.mk"
 496
 497         if enabled $tgt; then
 498             echo "Creating makefiles for ${toolchain} ${tgt}"
 499             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
 500             #write_${tgt}_config
 501         fi
 502     done
 503
 504 }
 505
 506 process_detect() {
 507     if enabled shared; then
 508         # Can only build shared libs on a subset of platforms. Doing this check
 509         # here rather than at option parse time because the target auto-detect
 510         # magic happens after the command line has been parsed.
 511         if ! enabled linux; then
 512             if enabled gnu; then
 513                 echo "--enable-shared is only supported on ELF; assuming this is OK"
 514             else
 515                 die "--enable-shared only supported on ELF for now"
 516             fi
 517         fi
 518     fi
 519     if [ -z "$CC" ] || enabled external_build; then
 520         echo "Bypassing toolchain for environment detection."
 521         enable_feature external_build
 522         check_header() {
 523             log fake_check_header "$@"
 524             header=$1
 525             shift
 526             var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
 527             disable_feature $var
 528             # Headers common to all environments
 529             case $header in
 530                 stdio.h)
 531                     true;
 532                 ;;
 533                 *)
 534                     local result=false
 535                     for d in "$@"; do
 536                         [ -f "${d##-I}/$header" ] && result=true && break
 537                     done
 538                     ${result:-true}
 539             esac && enable_feature $var
 540
 541             # Specialize windows and POSIX environments.
 542             case $toolchain in
 543                 *-win*-*)
 544                     case $header-$toolchain in
 545                         stdint*-gcc) true;;
 546                         *) false;;
 547                     esac && enable_feature $var
 548                     ;;
 549                 *)
 550                     case $header in
 551                         stdint.h) true;;
 552                         pthread.h) true;;
 553                         sys/mman.h) true;;
 554                         unistd.h) true;;
 555                         *) false;;
 556                     esac && enable_feature $var
 557             esac
 558             enabled $var
 559         }
 560         check_ld() {
 561             true
 562         }
 563     fi
 564     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
 565     check_ld <<EOF || die "Toolchain is unable to link executables"
 566 int main(void) {return 0;}
 567 EOF
 568     # check system headers
 569     check_header stdint.h
 570     check_header pthread.h
 571     check_header sys/mman.h
 572     check_header unistd.h # for sysconf(3) and friends.
 573
 574     check_header vpx/vpx_integer.h -I${source_path} && enable_feature vpx_ports
 575 }
 576
 577 process_toolchain() {
 578     process_common_toolchain
 579
 580     # Handle universal binaries for this architecture
 581     case $toolchain in
 582         universal-darwin*)
 583             local darwin_ver=${tgt_os##darwin}
 584
 585             # Snow Leopard (10.6/darwin10) dropped support for PPC
 586             # Include PPC support for all prior versions
 587             if [ $darwin_ver -lt 10 ]; then
 588                 fat_bin_archs="$fat_bin_archs ppc32-${tgt_os}-gcc"
 589             fi
 590
 591             # Tiger (10.4/darwin8) brought support for x86
 592             if [ $darwin_ver -ge 8 ]; then
 593                 fat_bin_archs="$fat_bin_archs x86-${tgt_os}-${tgt_cc}"
 594             fi
 595
 596             # Leopard (10.5/darwin9) brought 64 bit support
 597             if [ $darwin_ver -ge 9 ]; then
 598                 fat_bin_archs="$fat_bin_archs x86_64-${tgt_os}-${tgt_cc}"
 599             fi
 600             ;;
 601     esac
 602
 603
 604     # Enable some useful compiler flags
 605     if enabled gcc; then
 606         enabled werror && check_add_cflags -Werror
 607         check_add_cflags -Wall
 608         check_add_cflags -Wdeclaration-after-statement
 609         check_add_cflags -Wdisabled-optimization
 610         check_add_cflags -Wpointer-arith
 611         check_add_cflags -Wtype-limits
 612         check_add_cflags -Wcast-qual
 613         check_add_cflags -Wvla
 614         check_add_cflags -Wimplicit-function-declaration
 615         check_add_cflags -Wuninitialized
 616         check_add_cflags -Wunused-variable
 617         case ${CC} in
 618           *clang*)
 619               # libvpx and/or clang have issues with aliasing:
 620               # https://code.google.com/p/webm/issues/detail?id=603
 621               # work around them until they are fixed
 622               check_add_cflags -fno-strict-aliasing
 623           ;;
 624           *) check_add_cflags -Wunused-but-set-variable ;;
 625         esac
 626         enabled extra_warnings || check_add_cflags -Wno-unused-function
 627     fi
 628
 629     if enabled icc; then
 630         enabled werror && check_add_cflags -Werror
 631         check_add_cflags -Wall
 632         check_add_cflags -Wpointer-arith
 633
 634         # ICC has a number of floating point optimizations that we disable
 635         # in favor of deterministic output WRT to other compilers
 636         add_cflags -fp-model precise
 637     fi
 638
 639     # Enable extra, harmless warnings. These might provide additional insight
 640     # to what the compiler is doing and why, but in general, but they shouldn't
 641     # be treated as fatal, even if we're treating warnings as errors.
 642     GCC_EXTRA_WARNINGS="
 643         -Wdisabled-optimization
 644         -Winline
 645     "
 646     enabled gcc && EXTRA_WARNINGS="${GCC_EXTRA_WARNINGS}"
 647     RVCT_EXTRA_WARNINGS="
 648         --remarks
 649     "
 650     enabled rvct && EXTRA_WARNINGS="${RVCT_EXTRA_WARNINGS}"
 651     if enabled extra_warnings; then
 652         for w in ${EXTRA_WARNINGS}; do
 653             check_add_cflags ${w}
 654             enabled gcc && enabled werror && check_add_cflags -Wno-error=${w}
 655         done
 656     fi
 657
 658     # ccache only really works on gcc toolchains
 659     enabled gcc || soft_disable ccache
 660     if enabled mips; then
 661         enable_feature dequant_tokens
 662         enable_feature dc_recon
 663     fi
 664
 665     if enabled internal_stats; then
 666         enable_feature vp9_postproc
 667     fi
 668
 669     # Enable the postbuild target if building for visual studio.
 670     case "$tgt_cc" in
 671         vs*) enable_feature msvs
 672              enable_feature solution
 673              vs_version=${tgt_cc##vs}
 674              case $vs_version in
 675              [789])
 676                  VCPROJ_SFX=vcproj
 677                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_proj.sh
 678                  ;;
 679              10|11|12)
 680                  VCPROJ_SFX=vcxproj
 681                  gen_vcproj_cmd=${source_path}/build/make/gen_msvs_vcxproj.sh
 682                  ;;
 683              esac
 684              all_targets="${all_targets} solution"
 685              INLINE="__forceinline"
 686         ;;
 687     esac
 688
 689     # Other toolchain specific defaults
 690     case $toolchain in x86*|ppc*|universal*) soft_enable postproc;; esac
 691
 692     if enabled postproc_visualizer; then
 693         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
 694     fi
 695
 696     # Enable unit tests by default if we have a working C++ compiler.
 697     case "$toolchain" in
 698         *-vs*)
 699             soft_enable unit_tests
 700         ;;
 701         *-android-*)
 702             # GTestLog must be modified to use Android logging utilities.
 703         ;;
 704         *-darwin-*)
 705             # iOS/ARM builds do not work with gtest. This does not match
 706             # x86 targets.
 707         ;;
 708         *-win*)
 709             # Some mingw toolchains don't have pthread available by default.
 710             # Treat these more like visual studio where threading in gtest
 711             # would be disabled for the same reason.
 712             check_cxx "$@" <<EOF && soft_enable unit_tests
 713 int z;
 714 EOF
 715         ;;
 716         *)
 717             enabled pthread_h && check_cxx "$@" <<EOF && soft_enable unit_tests
 718 int z;
 719 EOF
 720         ;;
 721     esac
 722 }
 723
 724
 725 ##
 726 ## END APPLICATION SPECIFIC CONFIGURATION
 727 ##
 728 CONFIGURE_ARGS="$@"
 729 process "$@"
 730 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
 731 cat <<EOF >> ${BUILD_PFX}vpx_config.c
 732 static const char* const cfg = "$CONFIGURE_ARGS";
 733 const char *vpx_codec_build_config(void) {return cfg;}
 734 EOF