diff --git a/config.h.in b/config.h.in
index 18e2c843549..e7f2abb98cb 100644
--- a/config.h.in
+++ b/config.h.in
@@ -157,6 +157,9 @@
 /* Define if you have the dlopen function.  */
 #undef HAVE_DLOPEN
 
+/* Define if you have the dup2 function.  */
+#undef HAVE_DUP2
+
 /* Define if you have the flock function.  */
 #undef HAVE_FLOCK
 
@@ -166,6 +169,9 @@
 /* Define if you have the ftruncate function.  */
 #undef HAVE_FTRUNCATE
 
+/* Define if you have the getcwd function.  */
+#undef HAVE_GETCWD
+
 /* Define if you have the gethostname_r function.  */
 #undef HAVE_GETHOSTNAME_R
 
@@ -193,6 +199,9 @@
 /* Define if you have the lstat function.  */
 #undef HAVE_LSTAT
 
+/* Define if you have the memmove function.  */
+#undef HAVE_MEMMOVE
+
 /* Define if you have the mkfifo function.  */
 #undef HAVE_MKFIFO
 
@@ -238,6 +247,12 @@
 /* Define if you have the sigrelse function.  */
 #undef HAVE_SIGRELSE
 
+/* Define if you have the strdup function.  */
+#undef HAVE_STRDUP
+
+/* Define if you have the strerror function.  */
+#undef HAVE_STRERROR
+
 /* Define if you have the strftime function.  */
 #undef HAVE_STRFTIME