ref: 6e6dbbc67dcbd7cf4c47d1cf10a6c37bd4b99236
parent: 204cde580a5f6dd5e7511c932c47c068046d9671
author: James Zern <jzern@google.com>
date: Tue Nov 17 11:14:05 EST 2015
configure: simplify x86 asm dependencies --disable-XXX has the effect of disabling all extensions above it, e.g., --disable-ssse3 disables ssse3-avx2. Change-Id: If02b44ca71ee12e4acb12010db8593a7989f2a9d
--- a/build/make/configure.sh
+++ b/build/make/configure.sh
@@ -1208,14 +1208,20 @@
soft_enable runtime_cpu_detect
# We can't use 'check_cflags' until the compiler is configured and CC is
# populated.
- check_gcc_machine_option mmx
- check_gcc_machine_option sse
- check_gcc_machine_option sse2
- check_gcc_machine_option sse3
- check_gcc_machine_option ssse3
- check_gcc_machine_option sse4 sse4_1
- check_gcc_machine_option avx
- check_gcc_machine_option avx2
+ for ext in ${ARCH_EXT_LIST_X86}; do+ # disable higher order extensions to simplify asm dependencies
+ if [ "$disable_exts" = "yes" ]; then
+ if ! disabled $ext; then
+ RTCD_OPTIONS="${RTCD_OPTIONS}--disable-${ext} "+ disable_feature $ext
+ fi
+ elif disabled $ext; then
+ disable_exts="yes"
+ else
+ # use the shortened version for the flag: sse4_1 -> sse4
+ check_gcc_machine_option ${ext%_*} $ext+ fi
+ done
if enabled external_build; then
log_echo " skipping assembler detection"
--- a/configure
+++ b/configure
@@ -234,6 +234,16 @@
x86
x86_64
"
+ARCH_EXT_LIST_X86="
+ mmx
+ sse
+ sse2
+ sse3
+ ssse3
+ sse4_1
+ avx
+ avx2
+"
ARCH_EXT_LIST="
edsp
media
@@ -245,14 +255,7 @@
msa
mips64
- mmx
- sse
- sse2
- sse3
- ssse3
- sse4_1
- avx
- avx2
+ ${ARCH_EXT_LIST_X86}"
HAVE_LIST="
${ARCH_EXT_LIST}--
⑨