From 79ea1082d029c66c830345cd019d043f05a87830 Mon Sep 17 00:00:00 2001
From: "Jan (janneke) Nieuwenhuizen" <janneke@gnu.org>
Date: Mon, 12 Apr 2021 18:21:59 +0200
Subject: [PATCH] Link fix for MinGW.

This fixes

    libguile/threads.c:1502: undefined reference to `select_used_without_including_sys_select_h'

* libguile/threads.c: Include sys/select.h.
---
 libguile/threads.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libguile/threads.c b/libguile/threads.c
index 6b4510d53..c9d15ec25 100644
--- a/libguile/threads.c
+++ b/libguile/threads.c
@@ -31,6 +31,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>   /* for memset used by FD_ZERO on Solaris 10 */
+#include <sys/select.h>
 #include <sys/time.h>
 #include <sys/select.h>                           /* from Gnulib */
 #include <unistd.h>