[build] Use __SIZE_TYPE__ macro in definition of size_t

This is required in order to build on Mac OS X.

Modified-by: Michael Brown <mcb30@etherboot.org>
Signed-off-by: Michael Brown <mcb30@etherboot.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/include/stdint.h b/src/include/stdint.h
index 4b0e44f2e..dc4bd8c76 100644
--- a/src/include/stdint.h
+++ b/src/include/stdint.h
@@ -1,6 +1,16 @@
 #ifndef _STDINT_H
 #define _STDINT_H
 
+/*
+ * This is a standard predefined macro on all gcc's I've seen. It's
+ * important that we define size_t in the same way as the compiler,
+ * because that's what it's expecting when it checks %zd/%zx printf
+ * format specifiers.
+ */
+#ifndef __SIZE_TYPE__
+#define __SIZE_TYPE__ unsigned long /* safe choice on most systems */
+#endif
+
 #include <bits/stdint.h>
 
 typedef int8_t s8;