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