Index: head/lib/libauditd/Makefile
===================================================================
--- head/lib/libauditd/Makefile
+++ head/lib/libauditd/Makefile
@@ -23,3 +23,10 @@
 MAN=
 
 .include <bsd.lib.mk>
+
+# Disable -Wcast-align.  Casting res->ai_addr in auditd_set_host triggers this
+# warning, but it's ok because res->ai_addr must've originally pointed to a
+# sockaddr_in or sockaddr_in6 anyway.
+# Better would be to disable this warning in just that one function, but GCC
+# 4.2 can't do that :( .
+CWARNFLAGS.auditd_lib.c+=	-Wno-cast-align
Index: head/lib/libbsm/Makefile
===================================================================
--- head/lib/libbsm/Makefile
+++ head/lib/libbsm/Makefile
@@ -181,3 +181,10 @@
 	setaudit.2 setaudit_addr.2
 
 .include <bsd.lib.mk>
+
+# Disable -Wcast-align.  Casting sa_local in au_to_socket_ex triggers this
+# warning, but it's ok because sa_local must've originally pointed to a
+# sockaddr_in or sockaddr_in6 anyway.
+# Better would be to disable this warning in just that one function, but GCC
+# 4.2 can't do that :( .
+CWARNFLAGS.bsm_token.c+=	-Wno-cast-align