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   ${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_better_hw_compatibility}
  39                                   enable encoder to produce streams with better
  40                                   hardware decoder compatibility
  41   ${toggle_vp8}                   VP8 codec support
  42   ${toggle_vp9}                   VP9 codec support
  43   ${toggle_internal_stats}        output of encoder internal stats for debug, if supported (encoders)
  44   ${toggle_postproc}              postprocessing
  45   ${toggle_vp9_postproc}          vp9 specific postprocessing
  46   ${toggle_multithread}           multithreaded encoding and decoding
  47   ${toggle_spatial_resampling}    spatial sampling (scaling) support
  48   ${toggle_realtime_only}         enable this option while building for real-time encoding
  49   ${toggle_onthefly_bitpacking}   enable on-the-fly bitpacking in real-time encoding
  50   ${toggle_error_concealment}     enable this option to get a decoder which is able to conceal losses
  51   ${toggle_coefficient_range_checking}
  52                                   enable decoder to check if intermediate
  53                                   transform coefficients are in valid range
  54   ${toggle_runtime_cpu_detect}    runtime cpu detection
  55   ${toggle_shared}                shared library support
  56   ${toggle_static}                static library support
  57   ${toggle_small}                 favor smaller size over speed
  58   ${toggle_postproc_visualizer}   macro block / block level visualizers
  59   ${toggle_multi_res_encoding}    enable multiple-resolution encoding
  60   ${toggle_temporal_denoising}    enable temporal denoising and disable the spatial denoiser
  61   ${toggle_vp9_temporal_denoising}
  62                                   enable vp9 temporal denoising
  63   ${toggle_webm_io}               enable input from and output to WebM container
  64   ${toggle_libyuv}                enable libyuv
  65
  66 Codecs:
  67   Codecs can be selectively enabled or disabled individually, or by family:
  68       --disable-<codec>
  69   is equivalent to:
  70       --disable-<codec>-encoder
  71       --disable-<codec>-decoder
  72
  73   Codecs available in this distribution:
  74 EOF
  75 #restore editor state '
  76
  77     family="";
  78     last_family="";
  79     c="";
  80     str="";
  81     for c in ${CODECS}; do
  82         family=${c%_*}
  83         if [ "${family}" != "${last_family}" ]; then
  84             [ -z "${str}" ] || echo "${str}"
  85             str="$(printf '    %10s:' ${family})"
  86         fi
  87         str="${str} $(printf '%10s' ${c#*_})"
  88         last_family=${family}
  89     done
  90     echo "${str}"
  91     show_help_post
  92 }
  93
  94 ##
  95 ## BEGIN APPLICATION SPECIFIC CONFIGURATION
  96 ##
  97
  98 # all_platforms is a list of all supported target platforms. Maintain
  99 # alphabetically by architecture, generic-gnu last.
 100 all_platforms="${all_platforms} arm64-android-gcc"
 101 all_platforms="${all_platforms} arm64-darwin-gcc"
 102 all_platforms="${all_platforms} arm64-darwin20-gcc"
 103 all_platforms="${all_platforms} arm64-darwin21-gcc"
 104 all_platforms="${all_platforms} arm64-linux-gcc"
 105 all_platforms="${all_platforms} arm64-win64-gcc"
 106 all_platforms="${all_platforms} arm64-win64-vs15"
 107 all_platforms="${all_platforms} armv7-android-gcc"   #neon Cortex-A8
 108 all_platforms="${all_platforms} armv7-darwin-gcc"    #neon Cortex-A8
 109 all_platforms="${all_platforms} armv7-linux-rvct"    #neon Cortex-A8
 110 all_platforms="${all_platforms} armv7-linux-gcc"     #neon Cortex-A8
 111 all_platforms="${all_platforms} armv7-none-rvct"     #neon Cortex-A8
 112 all_platforms="${all_platforms} armv7-win32-gcc"
 113 all_platforms="${all_platforms} armv7-win32-vs14"
 114 all_platforms="${all_platforms} armv7-win32-vs15"
 115 all_platforms="${all_platforms} armv7s-darwin-gcc"
 116 all_platforms="${all_platforms} armv8-linux-gcc"
 117 all_platforms="${all_platforms} loongarch32-linux-gcc"
 118 all_platforms="${all_platforms} loongarch64-linux-gcc"
 119 all_platforms="${all_platforms} mips32-linux-gcc"
 120 all_platforms="${all_platforms} mips64-linux-gcc"
 121 all_platforms="${all_platforms} ppc64le-linux-gcc"
 122 all_platforms="${all_platforms} sparc-solaris-gcc"
 123 all_platforms="${all_platforms} x86-android-gcc"
 124 all_platforms="${all_platforms} x86-darwin8-gcc"
 125 all_platforms="${all_platforms} x86-darwin8-icc"
 126 all_platforms="${all_platforms} x86-darwin9-gcc"
 127 all_platforms="${all_platforms} x86-darwin9-icc"
 128 all_platforms="${all_platforms} x86-darwin10-gcc"
 129 all_platforms="${all_platforms} x86-darwin11-gcc"
 130 all_platforms="${all_platforms} x86-darwin12-gcc"
 131 all_platforms="${all_platforms} x86-darwin13-gcc"
 132 all_platforms="${all_platforms} x86-darwin14-gcc"
 133 all_platforms="${all_platforms} x86-darwin15-gcc"
 134 all_platforms="${all_platforms} x86-darwin16-gcc"
 135 all_platforms="${all_platforms} x86-darwin17-gcc"
 136 all_platforms="${all_platforms} x86-iphonesimulator-gcc"
 137 all_platforms="${all_platforms} x86-linux-gcc"
 138 all_platforms="${all_platforms} x86-linux-icc"
 139 all_platforms="${all_platforms} x86-os2-gcc"
 140 all_platforms="${all_platforms} x86-solaris-gcc"
 141 all_platforms="${all_platforms} x86-win32-gcc"
 142 all_platforms="${all_platforms} x86-win32-vs14"
 143 all_platforms="${all_platforms} x86-win32-vs15"
 144 all_platforms="${all_platforms} x86-win32-vs16"
 145 all_platforms="${all_platforms} x86-win32-vs17"
 146 all_platforms="${all_platforms} x86_64-android-gcc"
 147 all_platforms="${all_platforms} x86_64-darwin9-gcc"
 148 all_platforms="${all_platforms} x86_64-darwin10-gcc"
 149 all_platforms="${all_platforms} x86_64-darwin11-gcc"
 150 all_platforms="${all_platforms} x86_64-darwin12-gcc"
 151 all_platforms="${all_platforms} x86_64-darwin13-gcc"
 152 all_platforms="${all_platforms} x86_64-darwin14-gcc"
 153 all_platforms="${all_platforms} x86_64-darwin15-gcc"
 154 all_platforms="${all_platforms} x86_64-darwin16-gcc"
 155 all_platforms="${all_platforms} x86_64-darwin17-gcc"
 156 all_platforms="${all_platforms} x86_64-darwin18-gcc"
 157 all_platforms="${all_platforms} x86_64-darwin19-gcc"
 158 all_platforms="${all_platforms} x86_64-darwin20-gcc"
 159 all_platforms="${all_platforms} x86_64-darwin21-gcc"
 160 all_platforms="${all_platforms} x86_64-iphonesimulator-gcc"
 161 all_platforms="${all_platforms} x86_64-linux-gcc"
 162 all_platforms="${all_platforms} x86_64-linux-icc"
 163 all_platforms="${all_platforms} x86_64-solaris-gcc"
 164 all_platforms="${all_platforms} x86_64-win64-gcc"
 165 all_platforms="${all_platforms} x86_64-win64-vs14"
 166 all_platforms="${all_platforms} x86_64-win64-vs15"
 167 all_platforms="${all_platforms} x86_64-win64-vs16"
 168 all_platforms="${all_platforms} x86_64-win64-vs17"
 169 all_platforms="${all_platforms} generic-gnu"
 170
 171 # all_targets is a list of all targets that can be configured
 172 # note that these should be in dependency order for now.
 173 all_targets="libs examples tools docs"
 174
 175 # all targets available are enabled, by default.
 176 for t in ${all_targets}; do
 177     [ -f "${source_path}/${t}.mk" ] && enable_feature ${t}
 178 done
 179
 180 if ! diff --version >/dev/null; then
 181   die "diff missing: Try installing diffutils via your package manager."
 182 fi
 183
 184 if ! perl --version >/dev/null; then
 185     die "Perl is required to build"
 186 fi
 187
 188 if [ "`cd \"${source_path}\" && pwd`" != "`pwd`" ]; then
 189   # test to see if source_path already configured
 190   if [ -f "${source_path}/vpx_config.h" ]; then
 191     die "source directory already configured; run 'make distclean' there first"
 192   fi
 193 fi
 194
 195 # check installed doxygen version
 196 doxy_version=$(doxygen --version 2>/dev/null)
 197 doxy_major=${doxy_version%%.*}
 198 if [ ${doxy_major:-0} -ge 1 ]; then
 199     doxy_version=${doxy_version#*.}
 200     doxy_minor=${doxy_version%%.*}
 201     doxy_patch=${doxy_version##*.}
 202
 203     [ $doxy_major -gt 1 ] && enable_feature doxygen
 204     [ $doxy_minor -gt 5 ] && enable_feature doxygen
 205     [ $doxy_minor -eq 5 ] && [ $doxy_patch -ge 3 ] && enable_feature doxygen
 206 fi
 207
 208 # disable codecs when their source directory does not exist
 209 [ -d "${source_path}/vp8" ] || disable_codec vp8
 210 [ -d "${source_path}/vp9" ] || disable_codec vp9
 211
 212 # install everything except the sources, by default. sources will have
 213 # to be enabled when doing dist builds, since that's no longer a common
 214 # case.
 215 enabled doxygen && enable_feature install_docs
 216 enable_feature install_bins
 217 enable_feature install_libs
 218
 219 enable_feature static
 220 enable_feature optimizations
 221 enable_feature dependency_tracking
 222 enable_feature spatial_resampling
 223 enable_feature multithread
 224 enable_feature os_support
 225 enable_feature temporal_denoising
 226
 227 CODECS="
 228     vp8_encoder
 229     vp8_decoder
 230     vp9_encoder
 231     vp9_decoder
 232 "
 233 CODEC_FAMILIES="
 234     vp8
 235     vp9
 236 "
 237
 238 ARCH_LIST="
 239     arm
 240     mips
 241     x86
 242     x86_64
 243     ppc
 244     loongarch
 245 "
 246 ARCH_EXT_LIST_X86="
 247     mmx
 248     sse
 249     sse2
 250     sse3
 251     ssse3
 252     sse4_1
 253     avx
 254     avx2
 255     avx512
 256 "
 257
 258 ARCH_EXT_LIST_LOONGSON="
 259     mmi
 260     lsx
 261     lasx
 262 "
 263
 264 ARCH_EXT_LIST="
 265     neon
 266     neon_asm
 267
 268     mips32
 269     dspr2
 270     msa
 271     mips64
 272
 273     ${ARCH_EXT_LIST_X86}
 274
 275     vsx
 276
 277     ${ARCH_EXT_LIST_LOONGSON}
 278 "
 279 HAVE_LIST="
 280     ${ARCH_EXT_LIST}
 281     vpx_ports
 282     pthread_h
 283     unistd_h
 284 "
 285 EXPERIMENT_LIST="
 286     fp_mb_stats
 287     emulate_hardware
 288     non_greedy_mv
 289     rate_ctrl
 290 "
 291 CONFIG_LIST="
 292     dependency_tracking
 293     external_build
 294     install_docs
 295     install_bins
 296     install_libs
 297     install_srcs
 298     debug
 299     gprof
 300     gcov
 301     rvct
 302     gcc
 303     msvs
 304     pic
 305     big_endian
 306
 307     codec_srcs
 308     debug_libs
 309
 310     dequant_tokens
 311     dc_recon
 312     runtime_cpu_detect
 313     postproc
 314     vp9_postproc
 315     multithread
 316     internal_stats
 317     ${CODECS}
 318     ${CODEC_FAMILIES}
 319     encoders
 320     decoders
 321     static_msvcrt
 322     spatial_resampling
 323     realtime_only
 324     onthefly_bitpacking
 325     error_concealment
 326     shared
 327     static
 328     small
 329     postproc_visualizer
 330     os_support
 331     unit_tests
 332     webm_io
 333     libyuv
 334     decode_perf_tests
 335     encode_perf_tests
 336     multi_res_encoding
 337     temporal_denoising
 338     vp9_temporal_denoising
 339     consistent_recode
 340     coefficient_range_checking
 341     vp9_highbitdepth
 342     better_hw_compatibility
 343     experimental
 344     size_limit
 345     always_adjust_bpm
 346     bitstream_debug
 347     mismatch_debug
 348     ${EXPERIMENT_LIST}
 349 "
 350 CMDLINE_SELECT="
 351     dependency_tracking
 352     external_build
 353     extra_warnings
 354     werror
 355     install_docs
 356     install_bins
 357     install_libs
 358     install_srcs
 359     debug
 360     gprof
 361     gcov
 362     pic
 363     optimizations
 364     ccache
 365     runtime_cpu_detect
 366     thumb
 367
 368     libs
 369     examples
 370     tools
 371     docs
 372     libc
 373     as
 374     size_limit
 375     codec_srcs
 376     debug_libs
 377
 378     dequant_tokens
 379     dc_recon
 380     postproc
 381     vp9_postproc
 382     multithread
 383     internal_stats
 384     ${CODECS}
 385     ${CODEC_FAMILIES}
 386     static_msvcrt
 387     spatial_resampling
 388     realtime_only
 389     onthefly_bitpacking
 390     error_concealment
 391     shared
 392     static
 393     small
 394     postproc_visualizer
 395     unit_tests
 396     webm_io
 397     libyuv
 398     decode_perf_tests
 399     encode_perf_tests
 400     multi_res_encoding
 401     temporal_denoising
 402     vp9_temporal_denoising
 403     consistent_recode
 404     coefficient_range_checking
 405     better_hw_compatibility
 406     vp9_highbitdepth
 407     experimental
 408     always_adjust_bpm
 409     bitstream_debug
 410     mismatch_debug
 411 "
 412
 413 process_cmdline() {
 414     for opt do
 415         optval="${opt#*=}"
 416         case "$opt" in
 417         --disable-codecs)
 418           for c in ${CODEC_FAMILIES}; do disable_codec $c; done
 419           ;;
 420         --enable-?*|--disable-?*)
 421         eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
 422         if is_in ${option} ${EXPERIMENT_LIST}; then
 423             if enabled experimental; then
 424                 ${action}_feature $option
 425             else
 426                 log_echo "Ignoring $opt -- not in experimental mode."
 427             fi
 428         elif is_in ${option} "${CODECS} ${CODEC_FAMILIES}"; then
 429             ${action}_codec ${option}
 430         else
 431             process_common_cmdline $opt
 432         fi
 433         ;;
 434         *) process_common_cmdline "$opt"
 435         ;;
 436         esac
 437     done
 438 }
 439
 440 post_process_cmdline() {
 441     if enabled coefficient_range_checking; then
 442       echo "coefficient-range-checking is for decoders only, disabling encoders:"
 443       soft_disable vp8_encoder
 444       soft_disable vp9_encoder
 445     fi
 446
 447     c=""
 448
 449     # Enable all detected codecs, if they haven't been disabled
 450     for c in ${CODECS}; do soft_enable $c; done
 451
 452     # Enable the codec family if any component of that family is enabled
 453     for c in ${CODECS}; do
 454         enabled $c && enable_feature ${c%_*}
 455     done
 456
 457     # Set the {en,de}coders variable if any algorithm in that class is enabled
 458     for c in ${CODECS}; do
 459         enabled ${c} && enable_feature ${c##*_}s
 460     done
 461 }
 462
 463
 464 process_targets() {
 465     enabled child || write_common_config_banner
 466     write_common_target_config_h ${BUILD_PFX}vpx_config.h
 467     write_common_config_targets
 468     enabled win_arm64_neon_h_workaround && write_win_arm64_neon_h_workaround ${BUILD_PFX}arm_neon.h
 469
 470     # Calculate the default distribution name, based on the enabled features
 471     cf=""
 472     DIST_DIR=vpx
 473     for cf in $CODEC_FAMILIES; do
 474         if enabled ${cf}_encoder && enabled ${cf}_decoder; then
 475             DIST_DIR="${DIST_DIR}-${cf}"
 476         elif enabled ${cf}_encoder; then
 477             DIST_DIR="${DIST_DIR}-${cf}cx"
 478         elif enabled ${cf}_decoder; then
 479             DIST_DIR="${DIST_DIR}-${cf}dx"
 480         fi
 481     done
 482     enabled debug_libs && DIST_DIR="${DIST_DIR}-debug"
 483     enabled codec_srcs && DIST_DIR="${DIST_DIR}-src"
 484     ! enabled postproc && ! enabled vp9_postproc && DIST_DIR="${DIST_DIR}-nopost"
 485     ! enabled multithread && DIST_DIR="${DIST_DIR}-nomt"
 486     ! enabled install_docs && DIST_DIR="${DIST_DIR}-nodocs"
 487     DIST_DIR="${DIST_DIR}-${tgt_isa}-${tgt_os}"
 488     case "${tgt_os}" in
 489     win*) enabled static_msvcrt && DIST_DIR="${DIST_DIR}mt" || DIST_DIR="${DIST_DIR}md"
 490           DIST_DIR="${DIST_DIR}-${tgt_cc}"
 491           ;;
 492     esac
 493     if [ -f "${source_path}/build/make/version.sh" ]; then
 494         ver=`"$source_path/build/make/version.sh" --bare "$source_path"`
 495         DIST_DIR="${DIST_DIR}-${ver}"
 496         VERSION_STRING=${ver}
 497         ver=${ver%%-*}
 498         VERSION_PATCH=${ver##*.}
 499         ver=${ver%.*}
 500         VERSION_MINOR=${ver##*.}
 501         ver=${ver#v}
 502         VERSION_MAJOR=${ver%.*}
 503     fi
 504     enabled child || cat <<EOF >> config.mk
 505
 506 PREFIX=${prefix}
 507 ifeq (\$(MAKECMDGOALS),dist)
 508 DIST_DIR?=${DIST_DIR}
 509 else
 510 DIST_DIR?=\$(DESTDIR)${prefix}
 511 endif
 512 LIBSUBDIR=${libdir##${prefix}/}
 513
 514 VERSION_STRING=${VERSION_STRING}
 515
 516 VERSION_MAJOR=${VERSION_MAJOR}
 517 VERSION_MINOR=${VERSION_MINOR}
 518 VERSION_PATCH=${VERSION_PATCH}
 519
 520 CONFIGURE_ARGS=${CONFIGURE_ARGS}
 521 EOF
 522     enabled child || echo "CONFIGURE_ARGS?=${CONFIGURE_ARGS}" >> config.mk
 523
 524     #
 525     # Write makefiles for all enabled targets
 526     #
 527     for tgt in libs examples tools docs solution; do
 528         tgt_fn="$tgt-$toolchain.mk"
 529
 530         if enabled $tgt; then
 531             echo "Creating makefiles for ${toolchain} ${tgt}"
 532             write_common_target_config_mk $tgt_fn ${BUILD_PFX}vpx_config.h
 533             #write_${tgt}_config
 534         fi
 535     done
 536
 537 }
 538
 539 process_detect() {
 540     if enabled shared; then
 541         # Can only build shared libs on a subset of platforms. Doing this check
 542         # here rather than at option parse time because the target auto-detect
 543         # magic happens after the command line has been parsed.
 544         case "${tgt_os}" in
 545         linux|os2|solaris|darwin*|iphonesimulator*)
 546             # Supported platforms
 547             ;;
 548         *)
 549             if enabled gnu; then
 550                 echo "--enable-shared is only supported on ELF; assuming this is OK"
 551             else
 552                 die "--enable-shared only supported on ELF, OS/2, and Darwin for now"
 553             fi
 554             ;;
 555         esac
 556     fi
 557     if [ -z "$CC" ] || enabled external_build; then
 558         echo "Bypassing toolchain for environment detection."
 559         enable_feature external_build
 560         check_header() {
 561             log fake_check_header "$@"
 562             header=$1
 563             shift
 564             var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
 565             disable_feature $var
 566             # Headers common to all environments
 567             case $header in
 568                 stdio.h)
 569                     true;
 570                 ;;
 571                 *)
 572                     result=false
 573                     for d in "$@"; do
 574                         [ -f "${d##-I}/$header" ] && result=true && break
 575                     done
 576                     ${result:-true}
 577             esac && enable_feature $var
 578
 579             # Specialize windows and POSIX environments.
 580             case $toolchain in
 581                 *-win*-*)
 582                     # Don't check for any headers in Windows builds.
 583                     false
 584                 ;;
 585                 *)
 586                     case $header in
 587                         pthread.h) true;;
 588                         unistd.h) true;;
 589                         *) false;;
 590                     esac && enable_feature $var
 591             esac
 592             enabled $var
 593         }
 594         check_ld() {
 595             true
 596         }
 597         check_lib() {
 598             true
 599         }
 600     fi
 601     check_header stdio.h || die "Unable to invoke compiler: ${CC} ${CFLAGS}"
 602     check_ld <<EOF || die "Toolchain is unable to link executables"
 603 int main(void) {return 0;}
 604 EOF
 605     # check system headers
 606
 607     # Use both check_header and check_lib here, since check_lib
 608     # could be a stub that always returns true.
 609     check_header pthread.h && check_lib -lpthread <<EOF || disable_feature pthread_h
 610 #include <pthread.h>
 611 #include <stddef.h>
 612 int main(void) { return pthread_create(NULL, NULL, NULL, NULL); }
 613 EOF
 614     check_header unistd.h # for sysconf(3) and friends.
 615
 616     check_header vpx/vpx_integer.h -I${source_path} && enable_feature vpx_ports
 617
 618     if enabled neon && ! enabled external_build; then
 619       check_header arm_neon.h || die "Unable to find arm_neon.h"
 620     fi
 621 }
 622
 623 process_toolchain() {
 624     process_common_toolchain
 625
 626     # Enable some useful compiler flags
 627     if enabled gcc; then
 628         enabled werror && check_add_cflags -Werror
 629         check_add_cflags -Wall
 630         check_add_cflags -Wdeclaration-after-statement
 631         check_add_cflags -Wdisabled-optimization
 632         check_add_cflags -Wextra-semi
 633         check_add_cflags -Wextra-semi-stmt
 634         check_add_cflags -Wfloat-conversion
 635         check_add_cflags -Wformat=2
 636         check_add_cflags -Wparentheses-equality
 637         check_add_cflags -Wpointer-arith
 638         check_add_cflags -Wtype-limits
 639         check_add_cflags -Wcast-qual
 640         check_add_cflags -Wvla
 641         check_add_cflags -Wimplicit-function-declaration
 642         check_add_cflags -Wmissing-declarations
 643         check_add_cflags -Wmissing-prototypes
 644         check_add_cflags -Wuninitialized
 645         check_add_cflags -Wunreachable-code-loop-increment
 646         check_add_cflags -Wunused
 647         check_add_cflags -Wextra
 648         # check_add_cflags also adds to cxxflags. gtest does not do well with
 649         # these flags so add them explicitly to CFLAGS only.
 650         check_cflags -Wundef && add_cflags_only -Wundef
 651         check_cflags -Wframe-larger-than=52000 && \
 652           add_cflags_only -Wframe-larger-than=52000
 653         if enabled mips || [ -z "${INLINE}" ]; then
 654           enabled extra_warnings || check_add_cflags -Wno-unused-function
 655         fi
 656         # Enforce c89 for c files. Don't be too strict about it though. Allow
 657         # gnu extensions like "//" for comments.
 658         check_cflags -std=gnu89 && add_cflags_only -std=gnu89
 659         # Avoid this warning for third_party C++ sources. Some reorganization
 660         # would be needed to apply this only to test/*.cc.
 661         check_cflags -Wshorten-64-to-32 && add_cflags_only -Wshorten-64-to-32
 662
 663         # Quiet gcc 6 vs 7 abi warnings:
 664         # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728
 665         if enabled arm; then
 666           check_add_cxxflags -Wno-psabi
 667         fi
 668
 669         # disable some warnings specific to libyuv.
 670         check_cxxflags -Wno-missing-declarations \
 671           && LIBYUV_CXXFLAGS="${LIBYUV_CXXFLAGS} -Wno-missing-declarations"
 672         check_cxxflags -Wno-missing-prototypes \
 673           && LIBYUV_CXXFLAGS="${LIBYUV_CXXFLAGS} -Wno-missing-prototypes"
 674         check_cxxflags -Wno-unused-parameter \
 675           && LIBYUV_CXXFLAGS="${LIBYUV_CXXFLAGS} -Wno-unused-parameter"
 676     fi
 677
 678     if enabled icc; then
 679         enabled werror && check_add_cflags -Werror
 680         check_add_cflags -Wall
 681         check_add_cflags -Wpointer-arith
 682
 683         # ICC has a number of floating point optimizations that we disable
 684         # in favor of deterministic output WRT to other compilers
 685         add_cflags -fp-model precise
 686     fi
 687
 688     # Enable extra, harmless warnings. These might provide additional insight
 689     # to what the compiler is doing and why, but in general, but they shouldn't
 690     # be treated as fatal, even if we're treating warnings as errors.
 691     GCC_EXTRA_WARNINGS="
 692         -Wdisabled-optimization
 693         -Winline
 694     "
 695     enabled gcc && EXTRA_WARNINGS="${GCC_EXTRA_WARNINGS}"
 696     RVCT_EXTRA_WARNINGS="
 697         --remarks
 698     "
 699     enabled rvct && EXTRA_WARNINGS="${RVCT_EXTRA_WARNINGS}"
 700     if enabled extra_warnings; then
 701         for w in ${EXTRA_WARNINGS}; do
 702             check_add_cflags ${w}
 703             enabled gcc && enabled werror && check_add_cflags -Wno-error=${w}
 704         done
 705     fi
 706
 707     # ccache only really works on gcc toolchains
 708     enabled gcc || soft_disable ccache
 709     if enabled mips; then
 710         enable_feature dequant_tokens
 711         enable_feature dc_recon
 712     fi
 713
 714     if enabled internal_stats; then
 715         enable_feature vp9_postproc
 716     fi
 717
 718     # Enable the postbuild target if building for visual studio.
 719     case "$tgt_cc" in
 720         vs*) enable_feature msvs
 721              enable_feature solution
 722              vs_version=${tgt_cc##vs}
 723              VCPROJ_SFX=vcxproj
 724              gen_vcproj_cmd=${source_path}/build/make/gen_msvs_vcxproj.sh
 725              enabled werror && gen_vcproj_cmd="${gen_vcproj_cmd} --enable-werror"
 726              all_targets="${all_targets} solution"
 727              INLINE="__inline"
 728         ;;
 729     esac
 730
 731     # Other toolchain specific defaults
 732     case $toolchain in x86*) soft_enable postproc;; esac
 733
 734     if enabled postproc_visualizer; then
 735         enabled postproc || die "postproc_visualizer requires postproc to be enabled"
 736     fi
 737
 738     # Enable unit tests by default if we have a working C++ compiler.
 739     case "$toolchain" in
 740         *-vs*)
 741             soft_enable unit_tests
 742             soft_enable webm_io
 743             soft_enable libyuv
 744         ;;
 745         *-android-*)
 746             check_add_cxxflags -std=gnu++11 && soft_enable webm_io
 747             soft_enable libyuv
 748             # GTestLog must be modified to use Android logging utilities.
 749         ;;
 750         *-darwin-*)
 751             check_add_cxxflags -std=gnu++11
 752             # iOS/ARM builds do not work with gtest. This does not match
 753             # x86 targets.
 754         ;;
 755         *-iphonesimulator-*)
 756             check_add_cxxflags -std=gnu++11 && soft_enable webm_io
 757             soft_enable libyuv
 758         ;;
 759         *-win*)
 760             # Some mingw toolchains don't have pthread available by default.
 761             # Treat these more like visual studio where threading in gtest
 762             # would be disabled for the same reason.
 763             check_add_cxxflags -std=gnu++11 && soft_enable unit_tests \
 764               && soft_enable webm_io
 765             check_cxx "$@" <<EOF && soft_enable libyuv
 766 int z;
 767 EOF
 768         ;;
 769         *)
 770             enabled pthread_h && check_add_cxxflags -std=gnu++11 \
 771               && soft_enable unit_tests
 772             check_add_cxxflags -std=gnu++11 && soft_enable webm_io
 773             check_cxx "$@" <<EOF && soft_enable libyuv
 774 int z;
 775 EOF
 776         ;;
 777     esac
 778     # libwebm needs to be linked with C++ standard library
 779     enabled webm_io && LD=${CXX}
 780
 781     # append any user defined extra cflags
 782     if [ -n "${extra_cflags}" ] ; then
 783         check_add_cflags ${extra_cflags} || \
 784         die "Requested extra CFLAGS '${extra_cflags}' not supported by compiler"
 785     fi
 786     if [ -n "${extra_cxxflags}" ]; then
 787         check_add_cxxflags ${extra_cxxflags} || \
 788         die "Requested extra CXXFLAGS '${extra_cxxflags}' not supported by compiler"
 789     fi
 790 }
 791
 792
 793 ##
 794 ## END APPLICATION SPECIFIC CONFIGURATION
 795 ##
 796 CONFIGURE_ARGS="$@"
 797 process "$@"
 798 print_webm_license ${BUILD_PFX}vpx_config.c "/*" " */"
 799 cat <<EOF >> ${BUILD_PFX}vpx_config.c
 800 #include "vpx/vpx_codec.h"
 801 static const char* const cfg = "$CONFIGURE_ARGS";
 802 const char *vpx_codec_build_config(void) {return cfg;}
 803 EOF