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-rw-r--r--gcc-4.9/configure.ac12
1 files changed, 12 insertions, 0 deletions
diff --git a/gcc-4.9/configure.ac b/gcc-4.9/configure.ac
index e04fdfe6e..b78629a75 100644
--- a/gcc-4.9/configure.ac
+++ b/gcc-4.9/configure.ac
@@ -2556,6 +2556,18 @@ AC_ARG_ENABLE(bionic-libs,
[enable_bionic_libs=no])
AC_MSG_RESULT($enable_bionic_libs)
+# Use same top-level configure hooks in libatomic.
+AC_MSG_CHECKING([for --enable-libatomic-ifuncs])
+AC_ARG_ENABLE(libatomic-ifuncs,
+[ --enable-bionic-libs Enable/disable IFUNCs in libatomic library ],
+[case "$enableval" in
+ yes) enable_libatomic_ifuncs=yes ;;
+ no) enable_libatomic_ifuncs=no ;;
+ *) enable_libatomic_ifuncs=yes;;
+ esac],
+[enable_libatomic_ifuncs=yes])
+AC_MSG_RESULT($enable_libatomic_ifuncs)
+
# Record target_configdirs and the configure arguments for target and
# build configuration in Makefile.
target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`