From dc7232fa53a35a1764b849391717dbff8afc6489 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Tue, 30 Jun 2015 00:01:26 +0900
Subject: [PATCH] Fix travis compile error

---
 configure.ac |  2 ++
 src/timegm.c | 10 ++++++----
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/configure.ac b/configure.ac
index 9acab2c5..6a0b477c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -556,6 +556,8 @@ fi
 # adjustment.
 AC_CHECK_SIZEOF([int *])
 
+AC_CHECK_SIZEOF([time_t])
+
 # Checks for library functions.
 if test "x$cross_compiling" != "xyes"; then
   AC_FUNC_MALLOC
diff --git a/src/timegm.c b/src/timegm.c
index a935ba70..b80e0789 100644
--- a/src/timegm.c
+++ b/src/timegm.c
@@ -44,10 +44,12 @@ time_t timegm(struct tm *tm) {
   num_leap_year = count_leap_year(tm->tm_year + 1900) - count_leap_year(1970);
   days = (tm->tm_year - 70) * 365 + num_leap_year + tm->tm_yday;
   t = ((int64_t)days * 24 + tm->tm_hour) * 3600 + tm->tm_min * 60 + tm->tm_sec;
-  if (sizeof(time_t) == 4) {
-    if (t < INT32_MIN || t > INT32_MAX) {
-      return -1;
-    }
+
+#if SIZEOF_TIME_T == 4
+  if (t < INT32_MIN || t > INT32_MAX) {
+    return -1;
   }
+#endif /* SIZEOF_TIME_T == 4 */
+
   return (time_t)t;
 }