From 9ae9902249732237aa1711591604a6adf24963fe Mon Sep 17 00:00:00 2001
From: Nicolas Williams <nico@twosigma.com>
Date: Tue, 15 Feb 2022 17:01:00 -0600
Subject: [PATCH] cf: Check if time_t is signed

---
 configure.ac | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/configure.ac b/configure.ac
index 6c0e50c86..8c0b746ba 100644
--- a/configure.ac
+++ b/configure.ac
@@ -626,6 +626,15 @@ AM_CONDITIONAL(HAVE_KEYUTILS, test "$ac_cv_func_keyctl_get_persistent" = yes)
 
 AC_CHECK_SIZEOF([time_t])
 
+AX_CHECK_SIGN([time_t],
+  [ AC_DEFINE(TIME_T_SIGNED, 1, [Define if time_t is signed]) ],
+  [ AC_DEFINE(TIME_T_UNSIGNED, 1, [Define if time_t is unsigned]) ], [
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
+])
+
+
 AC_CHECK_TYPES([int8_t, int16_t, int32_t, int64_t, 
 	u_int8_t, u_int16_t, u_int32_t, u_int64_t,
 	uint8_t, uint16_t, uint32_t, uint64_t],,,[