--- /usr/portage/net-fs/samba/samba-4.5.3.ebuild	2017-01-15 14:14:42.384010456 +0100
+++ /usr/local/portage/net-fs/samba/samba-4.5.3.ebuild	2017-01-15 21:31:46.867699556 +0100
@@ -112,6 +112,9 @@
 	# ugly hackaround for bug #592502
 	cp /usr/include/tevent_internal.h "${S}"/lib/tevent/ || die
 
+	# workaround for bug #603570
+	rm -f "${S}/source4/heimdal_build/krb5-types.h"
+
 	multilib_copy_sources
 }