diff --git a/configure.in b/configure.in
index a28a5b7..934542a 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_FUNCS([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..b5c7685 100644
--- a/src/include/config.h.in
+++ b/src/include/config.h.in
@@ -167,6 +167,12 @@
 /* Define to 1 if you have the <string.h> header file. */
 #undef HAVE_STRING_H
 
+/* Define to 1 if you have the `strlcat,' function. */
+#undef HAVE_STRLCAT_
+
+/* Define to 1 if you have the `strlcpy' function. */
+#undef HAVE_STRLCPY
+
 /* Define to 1 if you have the `strtok' function. */
 #undef HAVE_STRTOK
 
diff --git a/src/include/pool.h b/src/include/pool.h
index 2a5736e..11cb119 100644
--- a/src/include/pool.h
+++ b/src/include/pool.h
@@ -583,7 +583,9 @@ extern void ClientAuthentication(POOL_CONNECTION *frontend);
 extern void pool_getnameinfo_all(SockAddr *saddr, char *remote_host, char *remote_port);
 
 /* strlcpy.c */
+#ifndef HAVE_STRLCPY
 extern size_t strlcpy(char *dst, const char *src, size_t siz);
+#endif
 
 /* ps_status.c */
 extern bool update_process_title;