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_tools}                 tools
  26   ${toggle_docs}                  documentation
  27   ${toggle_unit_tests}            unit tests
  28   ${toggle_decode_perf_tests}     build decoder perf tests with unit tests
  29   ${toggle_encode_perf_tests}     build encoder perf tests with unit tests
  30   --cpu=CPU                       tune for the specified CPU (ARM: cortex-a8, X86: sse3)
  31   --libc=PATH                     path to alternate libc
  32   --size-limit=WxH                max size to allow in the decoder
  33   --as={yasm|nasm|auto}           use specified assembler [auto, yasm preferred]
  34   --sdk-path=PATH                 path to root of sdk (android builds only)
  35   ${toggle_codec_srcs}            in/exclude codec library source code
  36   ${toggle_debug_libs}            in/exclude debug version of libraries
  37   ${toggle_static_msvcrt}         use static MSVCRT (VS builds only)
  38   ${toggle_vp9_highbitdepth}      use VP9 high bit depth (10/12) profiles
  39   ${toggle_better_hw_compatibility}
  40                                   enable encoder to produce streams with better
  41                                   hardware decoder compatibility
  42   ${toggle_vp8}                   VP8 codec support
  43   ${toggle_vp9}                   VP9 codec support
  44   ${toggle_internal_stats}        output of encoder internal stats for debug, if supported (encoders)
  45   ${toggle_postproc}              postprocessing
  46   ${toggle_vp9_postproc}          vp9 specific postprocessing
  47   ${toggle_multithread}           multithreaded encoding and decoding
  48   ${toggle_spatial_resampling}    spatial sampling (scaling) support
  49   ${toggle_realtime_only}         enable this option while building for real-time encoding
  50   ${toggle_onthefly_bitpacking}   enable on-the-fly bitpacking in real-time encoding
  51   ${toggle_error_concealment}     enable this option to get a decoder which is able to conceal losses
  52   ${toggle_coefficient_range_checking}
  53                                   enable decoder to check if intermediate
  54                                   transform coefficients are in valid range
  55   ${toggle_runtime_cpu_detect}    runtime cpu detection
  56   ${toggle_shared}                shared library support
  57   ${toggle_static}                static library support
  58   ${toggle_small}                 favor smaller size over speed
  59   ${toggle_postproc_visualizer}   macro block / block level visualizers
  60   ${toggle_multi_res_encoding}    enable multiple-resolution encoding
  61   ${toggle_temporal_denoising}    enable temporal denoising and disable the spatial denoiser
  62   ${toggle_vp9_temporal_denoising}
  63                                   enable vp9 temporal denoising
  64   ${toggle_webm_io}               enable input from and output to WebM container
  65   ${toggle_libyuv}                enable libyuv
  66
  67 Codecs:
  68   Codecs can be selectively enabled or disabled individually, or by family:
  69       --disable-<codec>
  70   is equivalent to:
  71       --disable-<codec>-encoder
  72       --disable-<codec>-decoder
  73
  74   Codecs available in this distribution:
  75 EOF
  76 #restore editor state '
  77
  78     family="";
  79     last_family="";
  80     c="";
  81     str="";
  82     for c in ${CODECS}; do
  83         family=${c%_*}
  84         if [ "${family}" != "${last_family}" ]; then
  85             [ -z "${str}" ] || echo "${str}"
  86             str="$(printf '    %10s:' ${family})"
  87         fi
  88         str="${str} $(printf '%10s' ${c#*_})"
  89         last_family=${family}
  90     done
  91     echo "${str}"
  92     show_help_post
  93 }
  94
  95 ##
  96 ## BEGIN APPLICATION SPECIFIC CONFIGURATION
  97 ##
  98
  99 # all_platforms is a list of all supported target platforms. Maintain
 100 # alphabetically by architecture, generic-gnu last.
 101 all_platforms="${all_platforms} arm64-android-gcc"
 102 all_platforms="${all_platforms} arm64-darwin-gcc"
 103 all_platforms="${all_platforms} arm64-linux-gcc"
 104 all_platforms="${all_platforms} arm64-win64-gcc"
 105 all_platforms="${all_platforms} arm64-win64-vs15"
 106 all_platforms="${all_platforms} armv7-android-gcc"   #neon Cortex-A8
 107 all_platforms="${all_platforms} armv7-darwin-gcc"    #neon Cortex-A8
 108 all_platforms="${all_platforms} armv7-linux-rvct"    #neon Cortex-A8
 109 all_platforms="${all_platforms} armv7-linux-gcc"     #neon Cortex-A8
 110 all_platforms="${all_platforms} armv7-none-rvct"     #neon Cortex-A8
 111 all_platforms="${all_platforms} armv7-win32-gcc"
 112 all_platforms="${all_platforms} armv7-win32-vs14"
 113 all_platforms="${all_platforms} armv7-win32-vs15"
 114 all_platforms="${all_platforms} armv7s-darwin-gcc"
 115 all_platforms="${all_platforms} armv8-linux-gcc"
 116 all_platforms="${all_platforms} mips32-linux-gcc"
 117 all_platforms="${all_platforms} mips64-linux-gcc"
 118 all_platforms="${all_platforms} ppc64le-linux-gcc"
 119 all_platforms="${all_platforms} sparc-solaris-gcc"
 120 all_platforms="${all_platforms} x86-android-gcc"
 121 all_platforms="${all_platforms} x86-darwin8-gcc"
 122 all_platforms="${all_platforms} x86-darwin8-icc"
 123 all_platforms="${all_platforms} x86-darwin9-gcc"
 124 all_platforms="${all_platforms} x86-darwin9-icc"
 125 all_platforms="${all_platforms} x86-darwin10-gcc"
 126 all_platforms="${all_platforms} x86-darwin11-gcc"
 127 all_platforms="${all_platforms} x86-darwin12-gcc"
 128 all_platforms="${all_platforms} x86-darwin13-gcc"
 129 all_platforms="${all_platforms} x86-darwin14-gcc"
 130 all_platforms="${all_platforms} x86-darwin15-gcc"
 131 all_platforms="${all_platforms} x86-darwin16-gcc"
 132 all_platforms="${all_platforms} x86-darwin17-gcc"
 133 all_platforms="${all_platforms} x86-iphonesimulator-gcc"
 134 all_platforms="${all_platforms} x86-linux-gcc"
 135 all_platforms="${all_platforms} x86-linux-icc"
 136 all_platforms="${all_platforms} x86-os2-gcc"
 137 all_platforms="${all_platforms} x86-solaris-gcc"
 138 all_platforms="${all_platforms} x86-win32-gcc"
 139 all_platforms="${all_platforms} x86-win32-vs14"
 140 all_platforms="${all_platforms} x86-win32-vs15"
 141 all_platforms="${all_platforms} x86_64-android-gcc"
 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-darwin14-gcc"
 148 all_platforms="${all_platforms} x86_64-darwin15-gcc"
 149 all_platforms="${all_platforms} x86_64-darwin16-gcc"
 150 all_platforms="${all_platforms} x86_64-darwin17-gcc"
 151 all_platforms="${all_platforms} x86_64-iphonesimulator-gcc"
 152 all_platforms="${all_platforms} x86_64-linux-gcc"
 153 all_platforms="${all_platforms} x86_64-linux-icc"
 154 all_platforms="${all_platforms} x86_64-solaris-gcc"
 155 all_platforms="${all_platforms} x86_64-win64-gcc"
 156 all_platforms="${all_platforms} x86_64-win64-vs14"
 157 all_platforms="${all_platforms} x86_64-win64-vs15"
 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 tools 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 ${t}
 167 done
 168
 169 if ! diff --version >/dev/null; then
 170   die "diff missing: Try installing diffutils via your package manager."
 171 fi
 172
 173 if ! perl --version >/dev/null; then
 174     die "Perl is required to build"
 175 fi
 176
 177 if [ "`cd \"${source_path}\" && pwd`" != "`pwd`" ]; then
 178   # test to see if source_path already configured
 179   if [ -f "${source_path}/vpx_config.h" ]; then
 180     die "source directory already configured; run 'make distclean' there first"
 181   fi
 182 fi
 183
 184 # check installed doxygen version
 185 doxy_version=$(doxygen --version 2>/dev/null)
 186 doxy_major=${doxy_version%%.*}
 187 if [ ${doxy_major:-0} -ge 1 ]; then
 188     doxy_version=${doxy_version#*.}
 189     doxy_minor=${doxy_version%%.*}
 190     doxy_patch=${doxy_version##*.}
 191
 192     [ $doxy_major -gt 1 ] && enable_feature doxygen
 193     [ $doxy_minor -gt 5 ] && enable_feature doxygen
 194     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable_feature doxygen
 195 fi
 196
 197 # disable codecs when their source directory does not exist
 198 [ -d "${source_path}/vp8" ] || disable_codec vp8
 199 [ -d "${source_path}/vp9" ] || disable_codec vp9
 200
 201 # install everything except the sources, by default. sources will have
 202 # to be enabled when doing dist builds, since that's no longer a common
 203 # case.
 204 enabled doxygen && enable_feature install_docs
 205 enable_feature install_bins
 206 enable_feature install_libs
 207
 208 enable_feature static
 209 enable_feature optimizations
 210 enable_feature dependency_tracking
 211 enable_feature spatial_resampling
 212 enable_feature multithread
 213 enable_feature os_support
 214 enable_feature temporal_denoising
 215
 216 CODECS="
 217     vp8_encoder
 218     vp8_decoder
 219     vp9_encoder
 220     vp9_decoder
 221 "
 222 CODEC_FAMILIES="
 223     vp8
 224     vp9
 225 "
 226
 227 ARCH_LIST="
 228     arm
 229     mips
 230     x86
 231     x86_64
 232     ppc
 233 "
 234 ARCH_EXT_LIST_X86="
 235     mmx
 236     sse
 237     sse2
 238     sse3
 239     ssse3
 240     sse4_1
 241     avx
 242     avx2
 243     avx512
 244 "
 245
 246 ARCH_EXT_LIST_LOONGSON="
 247     mmi
 248 "
 249
 250 ARCH_EXT_LIST="
 251     neon
 252     neon_asm
 253
 254     mips32
 255     dspr2
 256     msa
 257     mips64
 258
 259     ${ARCH_EXT_LIST_X86}
 260
 261     vsx
 262
 263     ${ARCH_EXT_LIST_LOONGSON}
 264 "
 265 HAVE_LIST="
 266     ${ARCH_EXT_LIST}
 267     vpx_ports
 268     pthread_h
 269     unistd_h
 270 "
 271 EXPERIMENT_LIST="
 272     fp_mb_stats
 273     emulate_hardware
 274     non_greedy_mv
 275 "
 276 CONFIG_LIST="
 277     dependency_tracking
 278     external_build
 279     install_docs
 280     install_bins
 281     install_libs
 282     install_srcs
 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     consistent_recode
 325     coefficient_range_checking
 326     vp9_highbitdepth
 327     better_hw_compatibility
 328     experimental
 329     size_limit
 330     always_adjust_bpm
 331     ${EXPERIMENT_LIST}
 332 "
 333 CMDLINE_SELECT="
 334     dependency_tracking
 335     external_build
 336     extra_warnings
 337     werror
 338     install_docs
 339     install_bins
 340     install_libs
 341     install_srcs
 342     debug
 343     gprof
 344     gcov
 345     pic
 346     optimizations
 347     ccache
 348     runtime_cpu_detect
 349     thumb
 350
 351     libs
 352     examples
 353     tools
 354     docs
 355     libc
 356     as
 357     size_limit
 358     codec_srcs
 359     debug_libs
 360
 361     dequant_tokens
 362     dc_recon
 363     postproc
 364     vp9_postproc
 365     multithread
 366     internal_stats
 367     ${CODECS}
 368     ${CODEC_FAMILIES}
 369     static_msvcrt
 370     spatial_resampling
 371     realtime_only
 372     onthefly_bitpacking
 373     error_concealment
 374     shared
 375     static
 376     small
 377     postproc_visualizer
 378     unit_tests
 379     webm_io
 380     libyuv
 381     decode_perf_tests
 382     encode_perf_tests
 383     multi_res_encoding
 384     temporal_denoising
 385     vp9_temporal_denoising
 386     consistent_recode
 387     coefficient_range_checking
 388     better_hw_compatibility
 389     vp9_highbitdepth
 390     experimental
 391     always_adjust_bpm
 392 "
 393
 394 process_cmdline() {
 395     for opt do
 396         optval="${opt#*=}"
 397         case "$opt" in
 398         --disable-codecs)
 399           for c in ${CODEC_FAMILIES}; do disable_codec $c; done
 400           ;;
 401         --enable-?*|--disable-?*)
 402         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
 403         if is_in ${option} ${EXPERIMENT_LIST}; then
 404             if enabled experimental; then
 405                 ${action}_feature $option
 406             else
 407                 log_echo "Ignoring $opt -- not in experimental mode."
 408             fi
 409         elif is_in ${option} "${CODECS} ${CODEC_FAMILIES}"; then
 410             ${action}_codec ${option}
 411         else
 412             process_common_cmdline $opt
 413         fi
 414         ;;
 415         *) process_common_cmdline "$opt"
 416         ;;
 417         esac
 418     done
 419 }
 420
 421 post_process_cmdline() {
 422     if enabled coefficient_range_checking; then
 423       echo "coefficient-range-checking is for decoders only, disabling encoders:"
 424       soft_disable vp8_encoder
 425       soft_disable vp9_encoder
 426     fi
 427
 428     c=""
 429
 430     # Enable all detected codecs, if they haven't been disabled
 431     for c in ${CODECS}; do soft_enable $c; done
 432
 433     # Enable the codec family if any component of that family is enabled
 434     for c in ${CODECS}; do
 435         enabled $c && enable_feature ${c%_*}
 436     done
 437
 438     # Set the {en,de}coders variable if any algorithm in that class is enabled
 439     for c in ${CODECS}; do
 440         enabled ${c} && enable_feature ${c##*_}s
 441     done
 442 }
 443
 444
 445 process_targets() {
 446     enabled child || write_common_config_banner
 447     write_common_target_config_h ${BUILD_PFX}vpx_config.h
 448     write_common_config_targets
 449     enabled win_arm64_neon_h_workaround && write_win_arm64_neon_h_workaround ${BUILD_PFX}arm_neon.h
 450
 451     # Calculate the default distribution name, based on the enabled features
 452     cf=""
 453     DIST_DIR=vpx
 454     for cf in $CODEC_FAMILIES; do
 455         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
 456             DIST_DIR="${DIST_DIR}-${cf}"
 457         elif enabled ${cf}_encoder; then
 458             DIST_DIR="${DIST_DIR}-${cf}cx"
 459         elif enabled ${cf}_decoder; then
 460             DIST_DIR="${DIST_DIR}-${cf}dx"
 461         fi
 462     done
 463     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
 464     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
 465     ! enabled postproc && ! enabled vp9_postproc && DIST_DIR="${DIST_DIR}-nopost"
 466     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
 467     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
 468     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
 469     case "${tgt_os}" in
 470     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
 471           DIST_DIR="${DIST_DIR}-${tgt_cc}"
 472           ;;
 473     esac
 474     if [ -f "${source_path}/build/make/version.sh" ]; then
 475         ver=`"$source_path/build/make/version.sh" --bare "$source_path"`
 476         DIST_DIR="${DIST_DIR}-${ver}"
 477         VERSION_STRING=${ver}
 478         ver=${ver%%-*}
 479         VERSION_PATCH=${ver##*.}
 480         ver=${ver%.*}
 481         VERSION_MINOR=${ver##*.}
 482         ver=${ver#v}
 483         VERSION_MAJOR=${ver%.*}
 484     fi
 485     enabled child || cat <<EOF >> config.mk
 486
 487 PREFIX=${prefix}
 488 ifeq (\$(MAKECMDGOALS),dist)
 489 DIST_DIR?=${DIST_DIR}
 490 else
 491 DIST_DIR?=\$(DESTDIR)${prefix}
 492 endif
 493 LIBSUBDIR=${libdir##${prefix}/}
 494
 495 VERSION_STRING=${VERSION_STRING}
 496
 497 VERSION_MAJOR=${VERSION_MAJOR}
 498 VERSION_MINOR=${VERSION_MINOR}
 499 VERSION_PATCH=${VERSION_PATCH}
 500
 501 CONFIGURE_ARGS=${CONFIGURE_ARGS}
 502 EOF
 503     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
 504
 505     #
 506     # Write makefiles for all enabled targets
 507     #
 508     for tgt in libs examples tools docs solution; do
 509         tgt_fn="$tgt-$toolchain.mk"
 510
 511         if enabled $tgt; then
 512             echo "Creating makefiles for ${toolchain} ${tgt}"
 513             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
 514             #write_${tgt}_config
 515         fi
 516     done
 517
 518 }
 519
 520 process_detect() {
 521     if enabled shared; then
 522         # Can only build shared libs on a subset of platforms. Doing this check
 523         # here rather than at option parse time because the target auto-detect
 524         # magic happens after the command line has been parsed.
 525         case "${tgt_os}" in
 526         linux|os2|solaris|darwin*|iphonesimulator*)
 527             # Supported platforms
 528             ;;
 529         *)
 530             if enabled gnu; then
 531                 echo "--enable-shared is only supported on ELF; assuming this is OK"
 532             else
 533                 die "--enable-shared only supported on ELF, OS/2, and Darwin for now"
 534             fi
 535             ;;
 536         esac
 537     fi
 538     if [ -z "$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                     # Don't check for any headers in Windows builds.
 564                     false
 565                 ;;
 566                 *)
 567                     case $header in
 568                         pthread.h) true;;
 569                         unistd.h) true;;
 570                         *) false;;
 571                     esac && enable_feature $var
 572             esac
 573             enabled $var
 574         }
 575         check_ld() {
 576             true
 577         }
 578         check_lib() {
 579             true
 580         }
 581     fi
 582     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
 583     check_ld <<EOF || die "Toolchain is unable to link executables"
 584 int main(void) {return 0;}
 585 EOF
 586     # check system headers
 587
 588     # Use both check_header and check_lib here, since check_lib
 589     # could be a stub that always returns true.
 590     check_header pthread.h && check_lib -lpthread <<EOF || disable_feature pthread_h
 591 #include <pthread.h>
 592 #include <stddef.h>
 593 int main(void) { return pthread_create(NULL, NULL, NULL, NULL); }
 594 EOF
 595     check_header unistd.h # for sysconf(3) and friends.
 596
 597     check_header vpx/vpx_integer.h -I${source_path} && enable_feature vpx_ports
 598
 599     if enabled neon && ! enabled external_build; then
 600       check_header arm_neon.h || die "Unable to find arm_neon.h"
 601     fi
 602 }
 603
 604 process_toolchain() {
 605     process_common_toolchain
 606
 607     # Enable some useful compiler flags
 608     if enabled gcc; then
 609         enabled werror && check_add_cflags -Werror
 610         check_add_cflags -Wall
 611         check_add_cflags -Wdeclaration-after-statement
 612         check_add_cflags -Wdisabled-optimization
 613         check_add_cflags -Wfloat-conversion
 614         check_add_cflags -Wparentheses-equality
 615         check_add_cflags -Wpointer-arith
 616         check_add_cflags -Wtype-limits
 617         check_add_cflags -Wcast-qual
 618         check_add_cflags -Wvla
 619         check_add_cflags -Wimplicit-function-declaration
 620         check_add_cflags -Wuninitialized
 621         check_add_cflags -Wunused
 622         check_add_cflags -Wextra
 623         # check_add_cflags also adds to cxxflags. gtest does not do well with
 624         # these flags so add them explicitly to CFLAGS only.
 625         check_cflags -Wundef && add_cflags_only -Wundef
 626         check_cflags -Wframe-larger-than=52000 && \
 627           add_cflags_only -Wframe-larger-than=52000
 628         check_cflags -Wmissing-declarations && \
 629           add_cflags_only -Wmissing-declarations
 630         check_cflags -Wmissing-prototypes && \
 631           add_cflags_only -Wmissing-prototypes
 632         if enabled mips || [ -z "${INLINE}" ]; then
 633           enabled extra_warnings || check_add_cflags -Wno-unused-function
 634         fi
 635         # Enforce c89 for c files. Don't be too strict about it though. Allow
 636         # gnu extensions like "//" for comments.
 637         check_cflags -std=gnu89 && add_cflags_only -std=gnu89
 638         # Avoid this warning for third_party C++ sources. Some reorganization
 639         # would be needed to apply this only to test/*.cc.
 640         check_cflags -Wshorten-64-to-32 && add_cflags_only -Wshorten-64-to-32
 641
 642         # Quiet gcc 6 vs 7 abi warnings:
 643         # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728
 644         if enabled arm; then
 645           check_add_cxxflags -Wno-psabi
 646         fi
 647     fi
 648
 649     if enabled icc; then
 650         enabled werror && check_add_cflags -Werror
 651         check_add_cflags -Wall
 652         check_add_cflags -Wpointer-arith
 653
 654         # ICC has a number of floating point optimizations that we disable
 655         # in favor of deterministic output WRT to other compilers
 656         add_cflags -fp-model precise
 657     fi
 658
 659     # Enable extra, harmless warnings. These might provide additional insight
 660     # to what the compiler is doing and why, but in general, but they shouldn't
 661     # be treated as fatal, even if we're treating warnings as errors.
 662     GCC_EXTRA_WARNINGS="
 663         -Wdisabled-optimization
 664         -Winline
 665     "
 666     enabled gcc && EXTRA_WARNINGS="${GCC_EXTRA_WARNINGS}"
 667     RVCT_EXTRA_WARNINGS="
 668         --remarks
 669     "
 670     enabled rvct && EXTRA_WARNINGS="${RVCT_EXTRA_WARNINGS}"
 671     if enabled extra_warnings; then
 672         for w in ${EXTRA_WARNINGS}; do
 673             check_add_cflags ${w}
 674             enabled gcc && enabled werror && check_add_cflags -Wno-error=${w}
 675         done
 676     fi
 677
 678     # ccache only really works on gcc toolchains
 679     enabled gcc || soft_disable ccache
 680     if enabled mips; then
 681         enable_feature dequant_tokens
 682         enable_feature dc_recon
 683     fi
 684
 685     if enabled internal_stats; then
 686         enable_feature vp9_postproc
 687     fi
 688
 689     # Enable the postbuild target if building for visual studio.
 690     case "$tgt_cc" in
 691         vs*) enable_feature msvs
 692              enable_feature solution
 693              vs_version=${tgt_cc##vs}
 694              VCPROJ_SFX=vcxproj
 695              gen_vcproj_cmd=${source_path}/build/make/gen_msvs_vcxproj.sh
 696              enabled werror && gen_vcproj_cmd="${gen_vcproj_cmd} --enable-werror"
 697              all_targets="${all_targets} solution"
 698              INLINE="__inline"
 699         ;;
 700     esac
 701
 702     # Other toolchain specific defaults
 703     case $toolchain in x86*) soft_enable postproc;; esac
 704
 705     if enabled postproc_visualizer; then
 706         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
 707     fi
 708
 709     # Enable unit tests by default if we have a working C++ compiler.
 710     case "$toolchain" in
 711         *-vs*)
 712             soft_enable unit_tests
 713             soft_enable webm_io
 714             soft_enable libyuv
 715         ;;
 716         *-android-*)
 717             check_add_cxxflags -std=c++11 && soft_enable webm_io
 718             soft_enable libyuv
 719             # GTestLog must be modified to use Android logging utilities.
 720         ;;
 721         *-darwin-*)
 722             # iOS/ARM builds do not work with gtest. This does not match
 723             # x86 targets.
 724         ;;
 725         *-iphonesimulator-*)
 726             check_add_cxxflags -std=c++11 && soft_enable webm_io
 727             soft_enable libyuv
 728         ;;
 729         *-win*)
 730             # Some mingw toolchains don't have pthread available by default.
 731             # Treat these more like visual studio where threading in gtest
 732             # would be disabled for the same reason.
 733             check_add_cxxflags -std=c++11 && soft_enable unit_tests \
 734               && soft_enable webm_io
 735             check_cxx "$@" <<EOF && soft_enable libyuv
 736 int z;
 737 EOF
 738         ;;
 739         *)
 740             enabled pthread_h && check_add_cxxflags -std=c++11 \
 741               && soft_enable unit_tests
 742             check_add_cxxflags -std=c++11 && soft_enable webm_io
 743             check_cxx "$@" <<EOF && soft_enable libyuv
 744 int z;
 745 EOF
 746         ;;
 747     esac
 748     # libwebm needs to be linked with C++ standard library
 749     enabled webm_io && LD=${CXX}
 750
 751     # append any user defined extra cflags
 752     if [ -n "${extra_cflags}" ] ; then
 753         check_add_cflags ${extra_cflags} || \
 754         die "Requested extra CFLAGS '${extra_cflags}' not supported by compiler"
 755     fi
 756     if [ -n "${extra_cxxflags}" ]; then
 757         check_add_cxxflags ${extra_cxxflags} || \
 758         die "Requested extra CXXFLAGS '${extra_cxxflags}' not supported by compiler"
 759     fi
 760 }
 761
 762
 763 ##
 764 ## END APPLICATION SPECIFIC CONFIGURATION
 765 ##
 766 CONFIGURE_ARGS="$@"
 767 process "$@"
 768 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
 769 cat <<EOF >> ${BUILD_PFX}vpx_config.c
 770 #include "vpx/vpx_codec.h"
 771 static const char* const cfg = "$CONFIGURE_ARGS";
 772 const char *vpx_codec_build_config(void) {return cfg;}
 773 EOF