Cache the value of this test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18231 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/autoconf/m4/link_use_r.m4 b/autoconf/m4/link_use_r.m4
index 9bd648f..30c964e 100644
--- a/autoconf/m4/link_use_r.m4
+++ b/autoconf/m4/link_use_r.m4
@@ -4,17 +4,16 @@
# This macro is specific to LLVM.
#
AC_DEFUN([AC_LINK_USE_R],
-[
- AC_MSG_CHECKING([for compiler -Wl,-R<path> option])
- AC_LANG_PUSH([C])
+[AC_CACHE_CHECK([for compiler -Wl,-R<path> option],[llvm_cv_link_use_r],
+[ AC_LANG_PUSH([C])
oldcflags="$CFLAGS"
CFLAGS="$CFLAGS -Wl,-R."
- AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[int main() { return 0; }]])],[ac_cv_link_use_r=yes],[ac_cv_link_use_r=no])
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[int main() { return 0; }]])],
+ [llvm_cv_link_use_r=yes],[llvm_cv_link_use_r=no])
CFLAGS="$oldcflags"
AC_LANG_POP([C])
- AC_MSG_RESULT($ac_cv_link_use_r)
- if test "$ac_cv_link_use_r" = yes
- then
- AC_DEFINE([HAVE_LINK_R],[1],[Define if you can use -Wl,-R. to pass -R. to the linker, in order to add the current directory to the dynamic linker search path.])
+])
+if test "$llvm_cv_link_use_r" = yes ; then
+ AC_DEFINE([HAVE_LINK_R],[1],[Define if you can use -Wl,-R. to pass -R. to the linker, in order to add the current directory to the dynamic linker search path.])
fi
])