diff --git a/cmake/config.h.in b/cmake/config.h.in
index 2896a2083..27737c991 100644
--- a/cmake/config.h.in
+++ b/cmake/config.h.in
@@ -257,3 +257,6 @@
 
 /* Define if using Darwin $NOCANCEL */
 #cmakedefine __DARWIN_NON_CANCELABLE
+
+/* Define to 1 if you have the `strlcpy` function. */
+#cmakedefine01 HAVE_STRLCPY