diff --git a/configure.in b/configure.in
index a28a5b7..1c94ac0 100644
--- a/configure.in
+++ b/configure.in
@@ -65,6 +65,8 @@ AC_CHECK_LIB(PW,       main)
 AC_CHECK_LIB(resolv,   main)
 AC_CHECK_LIB(crypt,   main)
 
+AC_CHECK_DECLS([strlcat, strlcpy])
+
 dnl Checks for header files.
 AC_HEADER_STDC
 AC_HEADER_SYS_WAIT
diff --git a/src/include/config.h.in b/src/include/config.h.in
index c578dd9..752cab0 100644
--- a/src/include/config.h.in
+++ b/src/include/config.h.in
@@ -25,6 +25,14 @@
 /* Define to 1 if you have the <crypt.h> header file. */
 #undef HAVE_CRYPT_H
 
+/* Define to 1 if you have the declaration of `strlcat', and to 0 if you
+   don't. */
+#undef HAVE_DECL_STRLCAT
+
+/* Define to 1 if you have the declaration of `strlcpy', and to 0 if you
+   don't. */
+#undef HAVE_DECL_STRLCPY
+
 /* Define to 1 if you have the <dlfcn.h> header file. */
 #undef HAVE_DLFCN_H
 
diff --git a/src/include/pool.h b/src/include/pool.h
index b478290..2727949 100644
--- a/src/include/pool.h
+++ b/src/include/pool.h
@@ -602,7 +602,9 @@ extern void ClientAuthentication(POOL_CONNECTION *frontend);
 extern void pool_getnameinfo_all(SockAddr *saddr, char *remote_host, char *remote_port);
 
 /* strlcpy.c */
-//extern size_t strlcpy(char *dst, const char *src, size_t siz);
+#ifndef HAVE_DECL_STRLCPY
+extern size_t strlcpy(char *dst, const char *src, size_t siz);
+#endif
 
 /* ps_status.c */
 extern bool update_process_title;