From: Florian Krohm <florian@eich-krohm.de>
Date: Fri, 24 Oct 2014 07:42:19 +0000 (+0000)
Subject: Use AC_GCC_WARNING_COND to figure out whether the compiler
X-Git-Tag: svn/VALGRIND_3_11_0~885
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e34eb41e96211e6b6a1521f37aec48008709c248;p=thirdparty%2Fvalgrind.git

Use AC_GCC_WARNING_COND to figure out whether the compiler
supports -Wcast-qual.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14663
---

diff --git a/configure.ac b/configure.ac
index 4b3edd0dd4..06b9709329 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1736,25 +1736,8 @@ AC_MSG_RESULT([-Wextra])
 CFLAGS=$safe_CFLAGS
 
 # does this compiler support -Wcast-qual ?
-AC_MSG_CHECKING([if gcc accepts -Wcast-qual])
-
-safe_CFLAGS=$CFLAGS
-CFLAGS="-Wcast-qual"
-
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
-  return 0;
-]])], [
-cast_qual=yes
-AC_MSG_RESULT([yes])
-], [
-cast_qual=no
-AC_MSG_RESULT([no])
-])
-CFLAGS=$safe_CFLAGS
-
-AM_CONDITIONAL(HAS_CAST_QUAL_WARNING, test x$cast_qual = xyes)
-
-if test x$cast_qual = xyes; then
+AC_GCC_WARNING_COND([cast-qual], [HAS_CAST_QUAL_WARNING])
+if test $has_warning_flag = yes; then
   CFLAGS="$CFLAGS -Wcast-qual"
   CXXFLAGS="$CXXFLAGS -Wcast-qual"
 fi