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-rw-r--r--time/strftime.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/time/strftime.c b/time/strftime.c
index 0ebc913090..e09d0fd26f 100644
--- a/time/strftime.c
+++ b/time/strftime.c
@@ -20,6 +20,11 @@
 # include <config.h>
 #endif
 
+/* Some hosts need this in order to declare localtime_r properly.  */
+#ifndef _REENTRANT
+# define _REENTRANT 1
+#endif
+
 #ifdef _LIBC
 # define HAVE_LIMITS_H 1
 # define HAVE_MBLEN 1