diff --git a/configure.in b/configure.in
index 4a8469c456..3d618099aa 100644
--- a/configure.in
+++ b/configure.in
@@ -4828,7 +4828,10 @@ if test "x$INET_LINK" != "x"; then
     INET_LINK=" -l$INET_LINK"
 fi
 
+WX_CHECK_FUNCS(fdopen)
+
 fi
+
 dnl if !MSW
 
 
diff --git a/setup.h.in b/setup.h.in
index 90b0e76cc3..98bba98270 100644
--- a/setup.h.in
+++ b/setup.h.in
@@ -1122,6 +1122,9 @@
 /* Define if you have the <sys/select.h> header file.  */
 #undef HAVE_SYS_SELECT_H
 
+/* Define if fdopen is available.  */
+#undef HAVE_FDOPEN
+
 /* -------------------------------------------------------------------------
    Win32 adjustments section
    ------------------------------------------------------------------------- */
diff --git a/setup.h_vms b/setup.h_vms
index 6b62637966..3ad1d29a82 100644
--- a/setup.h_vms
+++ b/setup.h_vms
@@ -1205,6 +1205,9 @@ typedef pid_t GPid;
 /* Define if you have Pango xft support */
 #undef HAVE_PANGO_XFT
 
+/* Define if fdopen is available.  */
+#undef HAVE_FDOPEN
+
 /* ---------------------------------------------------------------------
    Win32 adjustments section
    ---------------------------------------------------------------------