From 0777022d62f096f512c1d093aa3290ce49b8d4e3 Mon Sep 17 00:00:00 2001
From: Kevin Ryde <user42@zip.com.au>
Date: Sat, 13 Mar 2004 23:31:15 +0000
Subject: [PATCH] (strptime): Use #define _GNU_SOURCE to get the prototype from
 glibc, use AC_CHECK_DECLS rather than AC_EGREP_HEADER.

---
 configure.in | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/configure.in b/configure.in
index a2dd4b33b..fc402d380 100644
--- a/configure.in
+++ b/configure.in
@@ -649,10 +649,13 @@ AC_DEFUN([GUILE_FUNC_DECLARED], [
   fi
 ])
 
-GUILE_FUNC_DECLARED(strptime, time.h)
 GUILE_FUNC_DECLARED(sleep, unistd.h)
 GUILE_FUNC_DECLARED(usleep, unistd.h)
 
+AC_CHECK_DECLS([strptime],,,
+[#define _GNU_SOURCE /* ask glibc to give strptime prototype */
+#include <time.h>])
+
 ### On some systems usleep has no return value.  If it does have one,
 ### we'd like to return it; otherwise, we'll fake it.
 AC_CACHE_CHECK([return type of usleep], guile_cv_func_usleep_return_type,
-- 
2.20.1