build-sys: add -Wdiscarded-qualifiers

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/configure.ac b/configure.ac
index edef1455c190ee9ef794fd4909a66d1a5d623804..a41ca7689e3b507bc3a63b2e21137a9edb430ab0 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -135,6 +135,7 @@ UL_WARN_ADD([-Wpointer-arith])
 UL_WARN_ADD([-Wstrict-prototypes])
 UL_WARN_ADD([-Wformat-security])
 UL_WARN_ADD([-Wimplicit-function-declaration])
+UL_WARN_ADD([-Wdiscarded-qualifiers])
 AC_SUBST([WARN_CFLAGS])
 
 UL_WARN_ADD([-Wno-clobbered], [BSD_WARN_CFLAGS])