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