configure: Add check for gcc -Wstack-usage.
Some older gcc versions don't support -Wstack-usage. Only use it when
accepted by the compiler.
Signed-off-by: Mark Wielaard <mjw@redhat.com>
diff --git a/ChangeLog b/ChangeLog
index 3444519..f632b82 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2015-06-08 Mark Wielaard <mjw@redhat.com>
+
+ * configure.ac (ADD_STACK_USAGE_WARNING): New conditional based on
+ gcc -Wstack-usage check.
+
2015-05-31 Mark Wielaard <mjw@redhat.com>
* configure.ac (MODVERSION): Define using LIBEBL_SUBDIR, eu_version