Windows: Build and export localtime_r

lib/roken/NTMakefile

@@ -67,6 +67,7 @@ libroken_la_OBJS =			\
 	$(OBJ)\hostent_find_fqdn.obj	\
 	$(OBJ)\inet_aton.obj		\
 	$(OBJ)\issuid.obj		\
+	$(OBJ)\localtime_r.obj		\
 	$(OBJ)\lstat.obj		\
 	$(OBJ)\mini_inetd.obj		\
 	$(OBJ)\mkstemp.obj		\

lib/roken/localtime_r.c

@@ -42,6 +42,11 @@
 ROKEN_LIB_FUNCTION struct tm * ROKEN_LIB_CALL
 localtime_r(const time_t *timer, struct tm *result)
 {
+#ifdef _MSC_VER
+
+    return (localtime_s(result, timer) == 0)? result : NULL;
+
+#else
     struct tm *tm;
 
     tm = localtime((time_t *)timer);
@@ -49,6 +54,7 @@ localtime_r(const time_t *timer, struct tm *result)
 	return NULL;
     *result = *tm;
     return result;
+#endif
 }
 
 #endif