Use postgresql's implementation of strlcpy and strlcat.
http://bugs.gentoo.org/285953
2009-09-24 Martin von Gagern

--- /usr/portage/dev-db/postgresql-base/postgresql-base-8.4.1.ebuild	2009-09-10 00:11:26.000000000 +0200
+++ dev-db/postgresql-base/postgresql-base-8.4.1.ebuild	2009-09-24 20:02:46.000000000 +0200
@@ -7,7 +7,7 @@ EAPI="1"
 WANT_AUTOCONF="latest"
 WANT_AUTOMAKE="none"
 
-inherit eutils multilib toolchain-funcs versionator autotools
+inherit eutils multilib toolchain-funcs versionator autotools flag-o-matic
 
 KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~sparc-fbsd ~x86 ~x86-fbsd"
 
@@ -66,6 +66,13 @@ src_unpack() {
 }
 
 src_compile() {
+	# Bug #285953: don't use strlcat and friends from kerberos or similar
+	local func
+	for func in strlcat strlcpy; do
+		eval "export ac_cv_func_${func}=no"
+		append-cppflags -D${func}=pg_${func}
+	done
+
 	econf --prefix=/usr/$(get_libdir)/postgresql-${SLOT} \
 		--datadir=/usr/share/postgresql-${SLOT} \
 		--docdir=/usr/share/doc/postgresql-${SLOT} \