Add -Wcast-align

configure.ac

@@ -69,6 +69,9 @@ if test "x$GCC" = "xyes"; then
 	# Hide inline methods
 	CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden"
 
+	# Assorted warnings
+	CXXFLAGS="$CXXFLAGS -Wcast-align"
+
 	case "$host" in
 		arm-*-*)
 			# Request byte alignment on arm

src/Makefile.am

@@ -8,7 +8,7 @@ DISTCLEANFILES =
 MAINTAINERCLEANFILES =
 DISTCHECK_CONFIGURE_FLAGS = --enable-introspection
 
-# The following warning options are useful for debugging: -Wpadded -Wcast-align
+# The following warning options are useful for debugging: -Wpadded
 #AM_CXXFLAGS =
 
 lib_LTLIBRARIES = libharfbuzz.la