m4: ltp-warn_oldstyle: Cleanup GCC_WARN_OLDSTYLE content.
Do not save whole CFLAGS to GCC_WARN_OLDSTYLE, only the needed option.
Signed-off-by: Nicolas Joly <njoly@pasteur.fr>
Acked-by: Cyril Hrubis <chrubis@suse.cz>
diff --git a/m4/ltp-warn_oldstyle.m4 b/m4/ltp-warn_oldstyle.m4
index a35adcc..717e0a3 100644
--- a/m4/ltp-warn_oldstyle.m4
+++ b/m4/ltp-warn_oldstyle.m4
@@ -19,14 +19,15 @@
AC_DEFUN([LTP_CHECK_CC_WARN_OLDSTYLE],[dnl
-AC_MSG_CHECKING([if $CC supports -Wold-style-definition])
+wflag="-Wold-style-definition"
+AC_MSG_CHECKING([if $CC supports $wflag])
backup_cflags="$CFLAGS"
-CFLAGS+=" -Wold-style-definition"
+CFLAGS+=" $wflag"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([])],
- [GCC_WARN_OLDSTYLE="$CFLAGS"]
+ [GCC_WARN_OLDSTYLE="$wflag"]
[AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])]
)