@@ -65,19 +65,19 @@
 AX_CHECK_COMPILER_FLAGS(-fno-common, [OBJCFLAGS="$OBJCFLAGS -fno-common"])
 AX_CHECK_COMPILER_FLAGS(-fno-constant-cfstrings, [
 	OBJCFLAGS="$OBJCFLAGS -fno-constant-cfstrings"
 	AC_SUBST(NO_CONST_CFSTRINGS, "-fno-constant-cfstrings")
 ])
-AX_CHECK_COMPILER_FLAGS(-Wshorten-64-to-32,
+AX_CHECK_COMPILER_FLAGS(-Wshorten-64-to-32 -Werror,
 	[OBJCFLAGS="$OBJCFLAGS -Wshorten-64-to-32"])
-AX_CHECK_COMPILER_FLAGS(-Wsemicolon-before-method-body,
+AX_CHECK_COMPILER_FLAGS(-Wsemicolon-before-method-body -Werror,
 	[OBJCFLAGS="$OBJCFLAGS -Wsemicolon-before-method-body"])
-AX_CHECK_COMPILER_FLAGS(-Wno-objc-root-class,
+AX_CHECK_COMPILER_FLAGS(-Wno-objc-root-class -Werror,
 	[OBJCFLAGS="$OBJCFLAGS -Wno-objc-root-class"])
 AX_CHECK_COMPILER_FLAGS([-Wno-deprecated-objc-pointer-introspection -Werror],
 	[OBJCFLAGS="$OBJCFLAGS -Wno-deprecated-objc-pointer-introspection"])
-AX_CHECK_COMPILER_FLAGS(-Wdocumentation,
+AX_CHECK_COMPILER_FLAGS(-Wdocumentation -Werror,
 	[OBJCFLAGS="$OBJCFLAGS -Wdocumentation"])
 
 case "$OBJC" in
 	*clang*)
 		ASFLAGS="$ASFLAGS -no-integrated-as"