5 ## This script is sourced by the main configure script and contains
6 ## utility functions and other common bits that aren't strictly libvpx
9 ## This build system is based in part on the FFmpeg configure script.
14 # Logging / Output Functions
17 echo "Unknown option \"$1\"."
18 echo "See $0 --help for available options."
26 echo "Configuration failed. This could reflect a misconfiguration of your"
27 echo "toolchains, improper options selected, or another problem. If you"
28 echo "don't see any useful error messages above, the next step is to look"
29 echo "at the configure error log file ($logfile) to determine what"
30 echo "configure was trying to do when it died."
53 echo "$@" >> ${outfile}
57 for opt in ${CMDLINE_SELECT}; do
58 opt2=`echo $opt | sed -e 's;_;-;g'`
60 eval "toggle_${opt}=\"--disable-${opt2}\""
62 eval "toggle_${opt}=\"--enable-${opt2} \""
67 Usage: configure [options]
71 --help print this message
72 --log=yes|no|FILE file configure log is written to [config.log]
73 --target=TARGET target platform tuple [generic-gnu]
74 --cpu=CPU optimize for a specific cpu rather than a family
75 --extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [$CFLAGS]
76 --extra-cxxflags=ECXXFLAGS add ECXXFLAGS to CXXFLAGS [$CXXFLAGS]
77 ${toggle_extra_warnings} emit harmless warnings (always non-fatal)
78 ${toggle_werror} treat warnings as errors, if possible
79 (not available with all compilers)
80 ${toggle_optimizations} turn on/off compiler optimization flags
81 ${toggle_pic} turn on/off Position Independent Code
82 ${toggle_ccache} turn on/off compiler cache
83 ${toggle_debug} enable/disable debug mode
84 ${toggle_gprof} enable/disable gprof profiling instrumentation
85 ${toggle_gcov} enable/disable gcov coverage instrumentation
86 ${toggle_thumb} enable/disable building arm assembly in thumb mode
87 ${toggle_dependency_tracking}
88 disable to speed up one-time build
91 ${toggle_install_docs} control whether docs are installed
92 ${toggle_install_bins} control whether binaries are installed
93 ${toggle_install_libs} control whether libraries are installed
94 ${toggle_install_srcs} control whether sources are installed
105 Object files are built at the place where configure is launched.
107 All boolean options can be negated. The default value is the opposite
108 of that shown above. If the option --disable-foo is listed, then
109 the default value for foo is enabled.
113 show_targets ${all_platforms}
119 while [ -n "$*" ]; do
120 if [ "${1%%-*}" = "${2%%-*}" ]; then
121 if [ "${2%%-*}" = "${3%%-*}" ]; then
122 printf " %-24s %-24s %-24s\n" "$1" "$2" "$3"
125 printf " %-24s %-24s\n" "$1" "$2"
129 printf " %-24s\n" "$1"
141 # List Processing Functions
155 [ $var = $value ] && return 0
161 CFLAGS="${CFLAGS} $@"
162 CXXFLAGS="${CXXFLAGS} $@"
166 CFLAGS="${CFLAGS} $@"
169 add_cxxflags_only() {
170 CXXFLAGS="${CXXFLAGS} $@"
174 LDFLAGS="${LDFLAGS} $@"
178 ASFLAGS="${ASFLAGS} $@"
182 extralibs="${extralibs} $@"
186 # Boolean Manipulation Functions
198 eval test "x\$$1" = "xyes"
202 eval test "x\$$1" = "xno"
206 enabled "${1}" || echo " enabling ${1}"
207 enable_feature "${1}"
209 is_in "${1}" vp8 vp9 && enable_feature "${1}_encoder" "${1}_decoder"
213 disabled "${1}" || echo " disabling ${1}"
214 disable_feature "${1}"
216 is_in "${1}" vp8 vp9 && disable_feature "${1}_encoder" "${1}_decoder"
219 # Iterates through positional parameters, checks to confirm the parameter has
220 # not been explicitly (force) disabled, and enables the setting controlled by
221 # the parameter when the setting is not disabled.
222 # Note: Does NOT alter RTCD generation options ($RTCD_OPTIONS).
225 if ! disabled $var; then
226 enabled $var || log_echo " enabling $var"
232 # Iterates through positional parameters, checks to confirm the parameter has
233 # not been explicitly (force) enabled, and disables the setting controlled by
234 # the parameter when the setting is not enabled.
235 # Note: Does NOT alter RTCD generation options ($RTCD_OPTIONS).
238 if ! enabled $var; then
239 disabled $var || log_echo " disabling $var"
246 # Text Processing Functions
249 echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
253 echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
257 # Temporary File Functions
260 enable_feature source_path_used
261 if [ -z "$source_path" ] || [ "$source_path" = "." ]; then
263 disable_feature source_path_used
266 if test ! -z "$TMPDIR" ; then
268 elif test ! -z "$TEMPDIR" ; then
273 RAND=$(awk 'BEGIN { srand(); printf "%d\n",(rand() * 32768)}')
274 TMP_H="${TMPDIRx}/vpx-conf-$$-${RAND}.h"
275 TMP_C="${TMPDIRx}/vpx-conf-$$-${RAND}.c"
276 TMP_CC="${TMPDIRx}/vpx-conf-$$-${RAND}.cc"
277 TMP_O="${TMPDIRx}/vpx-conf-$$-${RAND}.o"
278 TMP_X="${TMPDIRx}/vpx-conf-$$-${RAND}.x"
279 TMP_ASM="${TMPDIRx}/vpx-conf-$$-${RAND}.asm"
282 rm -f ${TMP_C} ${TMP_CC} ${TMP_H} ${TMP_O} ${TMP_X} ${TMP_ASM}
283 enabled gcov && rm -f ${TMP_C%.c}.gcno ${TMP_CC%.cc}.gcno
287 # Toolchain Check Functions
290 enabled external_build && return
292 "$@" >>${logfile} 2>&1
299 check_cmd ${CC} ${CFLAGS} "$@" -c -o ${TMP_O} ${TMP_C}
306 check_cmd ${CXX} ${CXXFLAGS} "$@" -c -o ${TMP_O} ${TMP_CC}
313 check_cmd ${CC} ${CFLAGS} "$@" -E -o ${TMP_O} ${TMP_C}
319 && check_cmd ${LD} ${LDFLAGS} "$@" -o ${TMP_X} ${TMP_O} ${extralibs}
323 log check_header "$@"
326 var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
328 check_cpp "$@" <<EOF && enable_feature $var
335 log check_cflags "$@"
336 check_cc -Werror "$@" <<EOF
342 log check_cxxflags "$@"
344 # Catch CFLAGS that trigger CXX warnings
346 *c++-analyzer|*clang++|*g++*)
347 check_cxx -Werror "$@" <<EOF
352 check_cxx -Werror "$@" <<EOF
360 check_cxxflags "$@" && add_cxxflags_only "$@"
361 check_cflags "$@" && add_cflags_only "$@"
364 check_add_cxxflags() {
365 check_cxxflags "$@" && add_cxxflags_only "$@"
368 check_add_asflags() {
373 check_add_ldflags() {
379 log check_asm_align "$@"
380 cat >${TMP_ASM} <<EOF
385 check_cmd ${AS} ${ASFLAGS} -o ${TMP_O} ${TMP_ASM}
386 readelf -WS ${TMP_O} >${TMP_X}
388 if ! grep -q '\.rodata .* 16$' ${TMP_X}; then
389 die "${AS} ${ASFLAGS} does not support section alignment (nasm <=2.08?)"
393 # tests for -m$1 toggling the feature given in $2. If $2 is empty $1 is used.
394 check_gcc_machine_option() {
397 [ -n "$feature" ] || feature="$opt"
399 if enabled gcc && ! disabled "$feature" && ! check_cflags "-m$opt"; then
400 RTCD_OPTIONS="${RTCD_OPTIONS}--disable-$feature "
402 soft_enable "$feature"
406 write_common_config_banner() {
407 print_webm_license config.mk "##" ""
408 echo '# This file automatically generated by configure. Do not edit!' >> config.mk
409 echo "TOOLCHAIN := ${toolchain}" >> config.mk
413 echo "ALT_LIBC := ${alt_libc}" >> config.mk
418 write_common_config_targets() {
419 for t in ${all_targets}; do
420 if enabled ${t}; then
421 if enabled child; then
422 fwrite config.mk "ALL_TARGETS += ${t}-${toolchain}"
424 fwrite config.mk "ALL_TARGETS += ${t}"
432 write_common_target_config_mk() {
435 enabled ccache && CC="ccache ${CC}"
436 enabled ccache && CXX="ccache ${CXX}"
437 print_webm_license $1 "##" ""
440 # This file automatically generated by configure. Do not edit!
441 SRC_PATH="$source_path"
442 SRC_PATH_BARE=$source_path
443 BUILD_PFX=${BUILD_PFX}
444 TOOLCHAIN=${toolchain}
445 ASM_CONVERSION=${asm_conversion_cmd:-${source_path}/build/make/ads2gas.pl}
446 GEN_VCPROJ=${gen_vcproj_cmd}
447 MSVS_ARCH_DIR=${msvs_arch_dir}
458 CXXFLAGS = ${CXXFLAGS}
459 ARFLAGS = -crs\$(if \$(quiet),,v)
462 extralibs = ${extralibs}
463 AS_SFX = ${AS_SFX:-.asm}
465 VCPROJ_SFX = ${VCPROJ_SFX}
466 RTCD_OPTIONS = ${RTCD_OPTIONS}
469 if enabled rvct; then cat >> $1 << EOF
470 fmt_deps = sed -e 's;^__image.axf;\${@:.d=.o} \$@;' #hide
472 else cat >> $1 << EOF
473 fmt_deps = sed -e 's;^\([a-zA-Z0-9_]*\)\.o;\${@:.d=.o} \$@;'
477 print_config_mk ARCH "${1}" ${ARCH_LIST}
478 print_config_mk HAVE "${1}" ${HAVE_LIST}
479 print_config_mk CONFIG "${1}" ${CONFIG_LIST}
480 print_config_mk HAVE "${1}" gnu_strip
482 enabled msvs && echo "CONFIG_VS_VERSION=${vs_version}" >> "${1}"
488 write_common_target_config_h() {
489 print_webm_license ${TMP_H} "/*" " */"
490 cat >> ${TMP_H} << EOF
491 /* This file automatically generated by configure. Do not edit! */
494 #define RESTRICT ${RESTRICT}
495 #define INLINE ${INLINE}
497 print_config_h ARCH "${TMP_H}" ${ARCH_LIST}
498 print_config_h HAVE "${TMP_H}" ${HAVE_LIST}
499 print_config_h CONFIG "${TMP_H}" ${CONFIG_LIST}
500 print_config_vars_h "${TMP_H}" ${VAR_LIST}
501 echo "#endif /* VPX_CONFIG_H */" >> ${TMP_H}
502 mkdir -p `dirname "$1"`
503 cmp "$1" ${TMP_H} >/dev/null 2>&1 || mv ${TMP_H} "$1"
506 process_common_cmdline() {
515 if ! disabled logging ; then
516 enabled logging || logfile="$logging"
522 toolchain="${toolchain:-${optval}}"
525 toolchain="${toolchain:-${optval}}"
526 enable_feature force_toolchain
532 extra_cflags="${optval}"
535 extra_cxxflags="${optval}"
537 --enable-?*|--disable-?*)
538 eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
539 if is_in ${option} ${ARCH_EXT_LIST}; then
540 [ $action = "disable" ] && RTCD_OPTIONS="${RTCD_OPTIONS}--disable-${option} "
541 elif [ $action = "disable" ] && ! disabled $option ; then
542 is_in ${option} ${CMDLINE_SELECT} || die_unknown $opt
543 log_echo " disabling $option"
544 elif [ $action = "enable" ] && ! enabled $option ; then
545 is_in ${option} ${CMDLINE_SELECT} || die_unknown $opt
546 log_echo " enabling $option"
548 ${action}_feature $option
551 eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
552 if is_in ${option} ${ARCH_EXT_LIST}; then
553 RTCD_OPTIONS="${RTCD_OPTIONS}${opt} "
558 --force-enable-?*|--force-disable-?*)
559 eval `echo "$opt" | sed 's/--force-/action=/;s/-/ option=/;s/-/_/g'`
560 ${action}_feature $option
563 [ -d "${optval}" ] || die "Not a directory: ${optval}"
564 disable_feature builtin_libc
568 [ "${optval}" = yasm ] || [ "${optval}" = nasm ] \
569 || [ "${optval}" = auto ] \
570 || die "Must be yasm, nasm or auto: ${optval}"
576 VAR_LIST="DECODE_WIDTH_LIMIT ${w} DECODE_HEIGHT_LIMIT ${h}"
577 [ ${w} -gt 0 ] && [ ${h} -gt 0 ] || die "Invalid size-limit: too small."
578 [ ${w} -lt 65536 ] && [ ${h} -lt 65536 ] \
579 || die "Invalid size-limit: too big."
580 enable_feature size_limit
589 [ -d "${optval}" ] || die "Not a directory: ${optval}"
592 --libc|--as|--prefix|--libdir|--sdk-path)
593 die "Option ${opt} requires argument"
610 process_common_cmdline $opt
616 post_process_common_cmdline() {
617 prefix="${prefix:-/usr/local}"
619 libdir="${libdir:-${prefix}/lib}"
621 if [ "${libdir#${prefix}}" = "${libdir}" ]; then
622 die "Libdir ${libdir} must be a subdirectory of ${prefix}"
626 post_process_cmdline() {
630 setup_gnu_toolchain() {
631 CC=${CC:-${CROSS}gcc}
632 CXX=${CXX:-${CROSS}g++}
634 LD=${LD:-${CROSS}${link_with_cc:-ld}}
636 STRIP=${STRIP:-${CROSS}strip}
642 # Reliably find the newest available Darwin SDKs. (Older versions of
643 # xcrun don't support --show-sdk-path.)
644 show_darwin_sdk_path() {
645 xcrun --sdk $1 --show-sdk-path 2>/dev/null ||
646 xcodebuild -sdk $1 -version Path 2>/dev/null
649 # Print the major version number of the Darwin SDK specified by $1.
650 show_darwin_sdk_major_version() {
651 xcrun --sdk $1 --show-sdk-version 2>/dev/null | cut -d. -f1
654 # Print the Xcode version.
655 show_xcode_version() {
656 xcodebuild -version | head -n1 | cut -d' ' -f2
659 # Fails when Xcode version is less than 6.3.
660 check_xcode_minimum_version() {
661 xcode_major=$(show_xcode_version | cut -f1 -d.)
662 xcode_minor=$(show_xcode_version | cut -f2 -d.)
665 if [ ${xcode_major} -lt ${xcode_min_major} ]; then
668 if [ ${xcode_major} -eq ${xcode_min_major} ] \
669 && [ ${xcode_minor} -lt ${xcode_min_minor} ]; then
674 process_common_toolchain() {
675 if [ -z "$toolchain" ]; then
676 gcctarget="${CHOST:-$(gcc -dumpmachine 2> /dev/null)}"
683 armv7*-hardfloat* | armv7*-gnueabihf | arm-*-gnueabihf)
739 [ -z "$tgt_isa" ] && tgt_isa=x86
753 if [ -n "$tgt_isa" ] && [ -n "$tgt_os" ]; then
754 toolchain=${tgt_isa}-${tgt_os}-gcc
758 toolchain=${toolchain:-generic-gnu}
760 is_in ${toolchain} ${all_platforms} || enabled force_toolchain \
761 || die "Unrecognized toolchain '${toolchain}'"
763 enabled child || log_echo "Configuring for target '${toolchain}'"
766 # Set up toolchain variables
768 tgt_isa=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $1}')
769 tgt_os=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $2}')
770 tgt_cc=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $3}')
772 # Mark the specific ISA requested as enabled
773 soft_enable ${tgt_isa}
774 enable_feature ${tgt_os}
775 enable_feature ${tgt_cc}
777 # Enable the architecture family
787 # PIC is probably what we want when building shared libs
788 enabled shared && soft_enable pic
790 # Minimum iOS version for all target platforms (darwin and iphonesimulator).
791 # Shared library framework builds are only possible on iOS 8 and later.
792 if enabled shared; then
793 IOS_VERSION_OPTIONS="--enable-shared"
794 IOS_VERSION_MIN="8.0"
796 IOS_VERSION_OPTIONS=""
797 IOS_VERSION_MIN="6.0"
800 # Handle darwin variants. Newer SDKs allow targeting older
801 # platforms, so use the newest one available.
804 add_cflags "-miphoneos-version-min=${IOS_VERSION_MIN}"
805 iphoneos_sdk_dir="$(show_darwin_sdk_path iphoneos)"
806 if [ -d "${iphoneos_sdk_dir}" ]; then
807 add_cflags "-isysroot ${iphoneos_sdk_dir}"
808 add_ldflags "-isysroot ${iphoneos_sdk_dir}"
812 osx_sdk_dir="$(show_darwin_sdk_path macosx)"
813 if [ -d "${osx_sdk_dir}" ]; then
814 add_cflags "-isysroot ${osx_sdk_dir}"
815 add_ldflags "-isysroot ${osx_sdk_dir}"
822 add_cflags "-mmacosx-version-min=10.4"
823 add_ldflags "-mmacosx-version-min=10.4"
826 add_cflags "-mmacosx-version-min=10.5"
827 add_ldflags "-mmacosx-version-min=10.5"
830 add_cflags "-mmacosx-version-min=10.6"
831 add_ldflags "-mmacosx-version-min=10.6"
834 add_cflags "-mmacosx-version-min=10.7"
835 add_ldflags "-mmacosx-version-min=10.7"
838 add_cflags "-mmacosx-version-min=10.8"
839 add_ldflags "-mmacosx-version-min=10.8"
842 add_cflags "-mmacosx-version-min=10.9"
843 add_ldflags "-mmacosx-version-min=10.9"
846 add_cflags "-mmacosx-version-min=10.10"
847 add_ldflags "-mmacosx-version-min=10.10"
850 add_cflags "-mmacosx-version-min=10.11"
851 add_ldflags "-mmacosx-version-min=10.11"
854 add_cflags "-mmacosx-version-min=10.12"
855 add_ldflags "-mmacosx-version-min=10.12"
858 add_cflags "-miphoneos-version-min=${IOS_VERSION_MIN}"
859 add_ldflags "-miphoneos-version-min=${IOS_VERSION_MIN}"
860 iossim_sdk_dir="$(show_darwin_sdk_path iphonesimulator)"
861 if [ -d "${iossim_sdk_dir}" ]; then
862 add_cflags "-isysroot ${iossim_sdk_dir}"
863 add_ldflags "-isysroot ${iossim_sdk_dir}"
868 # Handle Solaris variants. Solaris 10 needs -lposix4
871 add_extralibs -lposix4
874 add_extralibs -lposix4
878 # Process ARM architecture variants
881 # on arm, isa versions are supersets
888 # Only enable neon_asm when neon is also enabled.
889 enabled neon && soft_enable neon_asm
890 # If someone tries to force it through, die.
891 if disabled neon && enabled neon_asm; then
892 die "Disabling neon while keeping neon-asm is not supported"
897 asm_conversion_cmd="cat"
903 arch_int=${tgt_isa##armv}
904 arch_int=${arch_int%%te}
905 check_add_asflags --defsym ARCHITECTURE=${arch_int}
906 tune_cflags="-mtune="
907 if [ ${tgt_isa} = "armv7" ] || [ ${tgt_isa} = "armv7s" ]; then
908 if [ -z "${float_abi}" ]; then
909 check_cpp <<EOF && float_abi=hard || float_abi=softfp
910 #ifndef __ARM_PCS_VFP
915 check_add_cflags -march=armv7-a -mfloat-abi=${float_abi}
916 check_add_asflags -march=armv7-a -mfloat-abi=${float_abi}
918 if enabled neon || enabled neon_asm; then
919 check_add_cflags -mfpu=neon #-ftree-vectorize
920 check_add_asflags -mfpu=neon
922 elif [ ${tgt_isa} = "arm64" ] || [ ${tgt_isa} = "armv8" ]; then
923 check_add_cflags -march=armv8-a
924 check_add_asflags -march=armv8-a
926 check_add_cflags -march=${tgt_isa}
927 check_add_asflags -march=${tgt_isa}
930 enabled debug && add_asflags -g
931 asm_conversion_cmd="${source_path}/build/make/ads2gas.pl"
932 if enabled thumb; then
933 asm_conversion_cmd="$asm_conversion_cmd -thumb"
934 check_add_cflags -mthumb
935 check_add_asflags -mthumb -mimplicit-it=always
939 asm_conversion_cmd="${source_path}/build/make/ads2armasm_ms.pl"
941 msvs_arch_dir=arm-msvs
942 disable_feature multithread
943 disable_feature unit_tests
944 vs_version=${tgt_cc##vs}
945 if [ $vs_version -ge 12 ]; then
946 # MSVC 2013 doesn't allow doing plain .exe projects for ARM,
947 # only "AppContainerApplication" which requires an AppxManifest.
948 # Therefore disable the examples, just build the library.
949 disable_feature examples
950 disable_feature tools
957 LD="${source_path}/build/make/armlink_adapter.sh"
958 STRIP=arm-none-linux-gnueabi-strip
959 NM=arm-none-linux-gnueabi-nm
961 tune_asflags="--cpu="
962 if [ -z "${tune_cpu}" ]; then
963 if [ ${tgt_isa} = "armv7" ]; then
964 if enabled neon || enabled neon_asm
966 check_add_cflags --fpu=softvfp+vfpv3
967 check_add_asflags --fpu=softvfp+vfpv3
969 check_add_cflags --cpu=Cortex-A8
970 check_add_asflags --cpu=Cortex-A8
972 check_add_cflags --cpu=${tgt_isa##armv}
973 check_add_asflags --cpu=${tgt_isa##armv}
976 arch_int=${tgt_isa##armv}
977 arch_int=${arch_int%%te}
978 check_add_asflags --pd "\"ARCHITECTURE SETA ${arch_int}\""
979 enabled debug && add_asflags -g
981 add_cflags --enum_is_int
988 disable_feature multithread
989 disable_feature os_support
993 if [ -n "${sdk_path}" ]; then
995 COMPILER_LOCATION=`find "${SDK_PATH}" \
996 -name "arm-linux-androideabi-gcc*" -print -quit`
997 TOOLCHAIN_PATH=${COMPILER_LOCATION%/*}/arm-linux-androideabi-
998 CC=${TOOLCHAIN_PATH}gcc
999 CXX=${TOOLCHAIN_PATH}g++
1000 AR=${TOOLCHAIN_PATH}ar
1001 LD=${TOOLCHAIN_PATH}gcc
1002 AS=${TOOLCHAIN_PATH}as
1003 STRIP=${TOOLCHAIN_PATH}strip
1004 NM=${TOOLCHAIN_PATH}nm
1006 if [ -z "${alt_libc}" ]; then
1007 alt_libc=`find "${SDK_PATH}" -name arch-arm -print | \
1008 awk '{n = split($0,a,"/"); \
1009 split(a[n-1],b,"-"); \
1010 print $0 " " b[2]}' | \
1012 awk '{ print $1 }' | tail -1`
1015 if [ -d "${alt_libc}" ]; then
1016 add_cflags "--sysroot=${alt_libc}"
1017 add_ldflags "--sysroot=${alt_libc}"
1020 # linker flag that routes around a CPU bug in some
1021 # Cortex-A8 implementations (NDK Dev Guide)
1022 add_ldflags "-Wl,--fix-cortex-a8"
1025 soft_enable realtime_only
1026 if [ ${tgt_isa} = "armv7" ]; then
1027 soft_enable runtime_cpu_detect
1029 if enabled runtime_cpu_detect; then
1030 add_cflags "-I${SDK_PATH}/sources/android/cpufeatures"
1033 echo "Assuming standalone build with NDK toolchain."
1034 echo "See build/make/Android.mk for details."
1035 check_add_ldflags -static
1036 soft_enable unit_tests
1041 XCRUN_FIND="xcrun --sdk iphoneos --find"
1042 CXX="$(${XCRUN_FIND} clang++)"
1043 CC="$(${XCRUN_FIND} clang)"
1044 AR="$(${XCRUN_FIND} ar)"
1045 AS="$(${XCRUN_FIND} as)"
1046 STRIP="$(${XCRUN_FIND} strip)"
1047 NM="$(${XCRUN_FIND} nm)"
1048 RANLIB="$(${XCRUN_FIND} ranlib)"
1050 LD="${CXX:-$(${XCRUN_FIND} ld)}"
1052 # ASFLAGS is written here instead of using check_add_asflags
1053 # because we need to overwrite all of ASFLAGS and purge the
1054 # options that were put in above
1055 ASFLAGS="-arch ${tgt_isa} -g"
1057 add_cflags -arch ${tgt_isa}
1058 add_ldflags -arch ${tgt_isa}
1060 alt_libc="$(show_darwin_sdk_path iphoneos)"
1061 if [ -d "${alt_libc}" ]; then
1062 add_cflags -isysroot ${alt_libc}
1065 if [ "${LD}" = "${CXX}" ]; then
1066 add_ldflags -miphoneos-version-min="${IOS_VERSION_MIN}"
1068 add_ldflags -ios_version_min "${IOS_VERSION_MIN}"
1071 for d in lib usr/lib usr/lib/system; do
1072 try_dir="${alt_libc}/${d}"
1073 [ -d "${try_dir}" ] && add_ldflags -L"${try_dir}"
1077 armv7|armv7s|armv8|arm64)
1078 if enabled neon && ! check_xcode_minimum_version; then
1080 log_echo " neon disabled: upgrade Xcode (need v6.3+)."
1081 if enabled neon_asm; then
1082 soft_disable neon_asm
1083 log_echo " neon_asm disabled: upgrade Xcode (need v6.3+)."
1089 asm_conversion_cmd="${source_path}/build/make/ads2gas_apple.pl"
1091 if [ "$(show_darwin_sdk_major_version iphoneos)" -gt 8 ]; then
1092 check_add_cflags -fembed-bitcode
1093 check_add_asflags -fembed-bitcode
1094 check_add_ldflags -fembed-bitcode
1099 enable_feature linux
1100 if enabled rvct; then
1101 # Check if we have CodeSourcery GCC in PATH. Needed for
1103 which arm-none-linux-gnueabi-gcc 2>&- || \
1104 die "Couldn't find CodeSourcery GCC from PATH"
1106 # Use armcc as a linker to enable translation of
1107 # some gcc specific options such as -lm and -lpthread.
1108 LD="armcc --translate_gcc"
1110 # create configuration file (uses path to CodeSourcery GCC)
1111 armcc --arm_linux_configure --arm_linux_config_file=arm_linux.cfg
1113 add_cflags --arm_linux_paths --arm_linux_config_file=arm_linux.cfg
1114 add_asflags --no_hide_all --apcs=/interwork
1115 add_ldflags --arm_linux_paths --arm_linux_config_file=arm_linux.cfg
1116 enabled pic && add_cflags --apcs=/fpic
1117 enabled pic && add_asflags --apcs=/fpic
1118 enabled shared && add_cflags --shared
1126 tune_cflags="-mtune="
1127 if enabled dspr2; then
1128 check_add_cflags -mips32r2 -mdspr2
1131 if enabled runtime_cpu_detect; then
1132 disable_feature runtime_cpu_detect
1135 if [ -n "${tune_cpu}" ]; then
1138 check_add_cflags -mips32r5 -mload-store-pairs
1139 check_add_cflags -msched-weight -mhard-float -mfp64
1140 check_add_asflags -mips32r5 -mhard-float -mfp64
1141 check_add_ldflags -mfp64
1144 check_add_cflags -mips64r6 -mabi=64 -msched-weight
1145 check_add_cflags -mload-store-pairs -mhard-float -mfp64
1146 check_add_asflags -mips64r6 -mabi=64 -mhard-float -mfp64
1147 check_add_ldflags -mips64r6 -mabi=64 -mfp64
1151 if enabled msa; then
1158 check_add_cflags -march=${tgt_isa}
1159 check_add_asflags -march=${tgt_isa}
1160 check_add_asflags -KPIC
1165 enabled gcc && add_cflags -fno-common
1168 CC=${CC:-${CROSS}gcc}
1169 CXX=${CXX:-${CROSS}g++}
1170 LD=${LD:-${CROSS}gcc}
1176 add_ldflags -Zhigh-mem
1180 AS="${alt_as:-${AS:-auto}}"
1186 add_cflags -use-msasm # remove -use-msasm too?
1187 # add -no-intel-extensions to suppress warning #10237
1188 # refer to http://software.intel.com/en-us/forums/topic/280199
1189 add_ldflags -i-static -no-intel-extensions
1190 enabled x86_64 && add_cflags -ipo -static -O3 -no-prec-div
1191 enabled x86_64 && AR=xiar
1195 tune_cpu="SSE3_ATOM"
1198 tune_cflags="-march="
1204 tune_cflags="-march="
1206 #for 32 bit x86 builds, -O3 did not turn on this flag
1207 enabled optimizations && disabled gprof && check_add_cflags -fomit-frame-pointer
1210 # When building with Microsoft Visual Studio the assembler is
1211 # invoked directly. Checking at configure time is unnecessary.
1212 # Skip the check by setting AS arbitrarily
1214 msvs_arch_dir=x86-msvs
1215 vc_version=${tgt_cc##vs}
1218 echo "${tgt_cc} does not support avx/avx2, disabling....."
1219 RTCD_OPTIONS="${RTCD_OPTIONS}--disable-avx --disable-avx2 "
1226 echo "${tgt_cc} omits stdint.h, disabling webm-io..."
1227 soft_disable webm_io
1234 enabled x86_64 && bits=64
1235 check_cpp <<EOF && bits=x32
1236 #if !defined(__ILP32__) || !defined(__x86_64__)
1242 add_cflags -m${bits}
1243 add_ldflags -m${bits}
1247 soft_enable runtime_cpu_detect
1248 # We can't use 'check_cflags' until the compiler is configured and CC is
1250 for ext in ${ARCH_EXT_LIST_X86}; do
1251 # disable higher order extensions to simplify asm dependencies
1252 if [ "$disable_exts" = "yes" ]; then
1253 if ! disabled $ext; then
1254 RTCD_OPTIONS="${RTCD_OPTIONS}--disable-${ext} "
1255 disable_feature $ext
1257 elif disabled $ext; then
1260 # use the shortened version for the flag: sse4_1 -> sse4
1261 check_gcc_machine_option ${ext%_*} $ext
1265 if enabled external_build; then
1266 log_echo " skipping assembler detection"
1270 which nasm >/dev/null 2>&1 && AS=nasm
1271 which yasm >/dev/null 2>&1 && AS=yasm
1272 if [ "${AS}" = nasm ] ; then
1273 # Apple ships version 0.98 of nasm through at least Xcode 6. Revisit
1274 # this check if they start shipping a compatible version.
1275 apple=`nasm -v | grep "Apple"`
1277 && echo "Unsupported version of nasm: ${apple}" \
1280 [ "${AS}" = auto ] || [ -z "${AS}" ] \
1281 && die "Neither yasm nor nasm have been found." \
1282 "See the prerequisites section in the README for more info."
1285 log_echo " using $AS"
1287 [ "${AS##*/}" = nasm ] && add_asflags -Ox
1291 add_asflags -f win32
1292 enabled debug && add_asflags -g cv8
1297 enabled debug && add_asflags -g cv8
1300 linux*|solaris*|android*)
1301 add_asflags -f elf${bits}
1302 enabled debug && [ "${AS}" = yasm ] && add_asflags -g dwarf2
1303 enabled debug && [ "${AS}" = nasm ] && add_asflags -g
1304 [ "${AS##*/}" = nasm ] && check_asm_align
1307 add_asflags -f macho${bits}
1308 enabled x86 && darwin_arch="-arch i386" || darwin_arch="-arch x86_64"
1309 add_cflags ${darwin_arch}
1310 add_ldflags ${darwin_arch}
1311 # -mdynamic-no-pic is still a bit of voodoo -- it was required at
1312 # one time, but does not seem to be now, and it breaks some of the
1313 # code that still relies on inline assembly.
1314 # enabled icc && ! enabled pic && add_cflags -fno-pic -mdynamic-no-pic
1315 enabled icc && ! enabled pic && add_cflags -fno-pic
1318 add_asflags -f macho${bits}
1319 enabled x86 && sim_arch="-arch i386" || sim_arch="-arch x86_64"
1320 add_cflags ${sim_arch}
1321 add_ldflags ${sim_arch}
1323 if [ "$(show_darwin_sdk_major_version iphonesimulator)" -gt 8 ]; then
1324 # yasm v1.3.0 doesn't know what -fembed-bitcode means, so turning it
1325 # on is pointless (unless building a C-only lib). Warn the user, but
1327 log "Warning: Bitcode embed disabled for simulator targets."
1332 enabled debug && add_asflags -g
1336 log "Warning: Unknown os $tgt_os while setting up $AS flags"
1347 # Try to enable CPU specific tuning
1348 if [ -n "${tune_cpu}" ]; then
1349 if [ -n "${tune_cflags}" ]; then
1350 check_add_cflags ${tune_cflags}${tune_cpu} || \
1351 die "Requested CPU '${tune_cpu}' not supported by compiler"
1353 if [ -n "${tune_asflags}" ]; then
1354 check_add_asflags ${tune_asflags}${tune_cpu} || \
1355 die "Requested CPU '${tune_cpu}' not supported by assembler"
1357 if [ -z "${tune_cflags}${tune_asflags}" ]; then
1358 log_echo "Warning: CPU tuning not supported by this toolchain"
1362 if enabled debug; then
1363 check_add_cflags -g && check_add_ldflags -g
1365 check_add_cflags -DNDEBUG
1368 enabled gprof && check_add_cflags -pg && check_add_ldflags -pg
1370 check_add_cflags -fprofile-arcs -ftest-coverage &&
1371 check_add_ldflags -fprofile-arcs -ftest-coverage
1373 if enabled optimizations; then
1374 if enabled rvct; then
1375 enabled small && check_add_cflags -Ospace || check_add_cflags -Otime
1377 enabled small && check_add_cflags -O2 || check_add_cflags -O3
1381 # Position Independent Code (PIC) support, for building relocatable
1383 enabled gcc && enabled pic && check_add_cflags -fPIC
1385 # Work around longjmp interception on glibc >= 2.11, to improve binary
1386 # compatibility. See http://code.google.com/p/webm/issues/detail?id=166
1387 enabled linux && check_add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0
1389 # Check for strip utility variant
1390 ${STRIP} -V 2>/dev/null | grep GNU >/dev/null && enable_feature gnu_strip
1392 # Try to determine target endianness
1394 unsigned int e = 'O'<<24 | '2'<<16 | 'B'<<8 | 'E';
1396 [ -f "${TMP_O}" ] && od -A n -t x1 "${TMP_O}" | tr -d '\n' |
1397 grep '4f *32 *42 *45' >/dev/null 2>&1 && enable_feature big_endian
1399 # Try to find which inline keywords are supported
1400 check_cc <<EOF && INLINE="inline"
1401 static inline function() {}
1404 # Almost every platform uses pthreads.
1405 if enabled multithread; then
1406 case ${toolchain} in
1410 # bionic includes basic pthread functionality, obviating -lpthread.
1413 check_header pthread.h && add_extralibs -lpthread
1418 # only for MIPS platforms
1419 case ${toolchain} in
1421 if enabled big_endian; then
1422 if enabled dspr2; then
1423 echo "dspr2 optimizations are available only for little endian platforms"
1424 disable_feature dspr2
1426 if enabled msa; then
1427 echo "msa optimizations are available only for little endian platforms"
1435 if enabled linux; then
1436 add_cflags -D_LARGEFILE_SOURCE
1437 add_cflags -D_FILE_OFFSET_BITS=64
1441 process_toolchain() {
1442 process_common_toolchain
1446 saved_prefix="${prefix}"
1451 if enabled $cfg; then
1452 upname="`toupper $cfg`"
1453 echo "${prefix}_${upname}=yes" >> $makefile
1456 prefix="${saved_prefix}"
1460 saved_prefix="${prefix}"
1465 upname="`toupper $cfg`"
1466 if enabled $cfg; then
1467 echo "#define ${prefix}_${upname} 1" >> $header
1469 echo "#define ${prefix}_${upname} 0" >> $header
1472 prefix="${saved_prefix}"
1475 print_config_vars_h() {
1478 while [ $# -gt 0 ]; do
1479 upname="`toupper $1`"
1480 echo "#define ${upname} $2" >> $header
1485 print_webm_license() {
1486 saved_prefix="${prefix}"
1491 cat <<EOF > ${destination}
1492 ${prefix} Copyright (c) 2011 The WebM project authors. All Rights Reserved.${suffix}
1494 ${prefix} Use of this source code is governed by a BSD-style license${suffix}
1495 ${prefix} that can be found in the LICENSE file in the root of the source${suffix}
1496 ${prefix} tree. An additional intellectual property rights grant can be found${suffix}
1497 ${prefix} in the file PATENTS. All contributing project authors may${suffix}
1498 ${prefix} be found in the AUTHORS file in the root of the source tree.${suffix}
1500 prefix="${saved_prefix}"
1511 enable_feature logging
1512 logfile="config.log"
1516 process_cmdline "$@"
1517 if enabled child; then
1518 echo "# ${self} $@" >> ${logfile}
1520 echo "# ${self} $@" > ${logfile}
1522 post_process_common_cmdline
1523 post_process_cmdline
1528 OOT_INSTALLS="${OOT_INSTALLS}"
1529 if enabled source_path_used; then
1530 # Prepare the PWD for building.
1531 for f in ${OOT_INSTALLS}; do
1532 install -D "${source_path}/$f" "$f"
1535 cp "${source_path}/build/make/Makefile" .