fix build of intl/calendar

diff --git a/ext/intl/calendar/calendar_methods.cpp b/ext/intl/calendar/calendar_methods.cpp
index ce23a00a4e998100b3011939aa26acb88710ed6e..8ed3da23a9cddcca2d84f3f0aeef961e77f8c9a8 100644 (file)
--- a/ext/intl/calendar/calendar_methods.cpp
+++ b/ext/intl/calendar/calendar_methods.cpp
@@ -18,6 +18,9 @@
 #include "config.h"
 #endif
 
+#define __STDC_FORMAT_MACROS
+#include <inttypes.h>
+
 #include "../intl_cppshims.h"
 
 #include <unicode/locid.h>