diff --git a/base/endian_utils.h b/base/endian_utils.h
index 3ad75ae..82b5b59 100644
--- a/base/endian_utils.h
+++ b/base/endian_utils.h
@@ -25,6 +25,26 @@
 
 //----------------------------------------------------------------
 
+/* An old glic doesn't provide these macros */
+#if !defined(htole16) || !defined(le16toh) || !defined(htole32) || !defined(le32toh) || !defined(htole64) || !defined(le64toh)
+#include <byteswap.h>
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define htole16(x) (x)
+#define le16toh(x) (x)
+#define htole32(x) (x)
+#define le32toh(x) (x)
+#define htole64(x) (x)
+#define le64toh(x) (x)
+#else
+#define htole16(x) __bswap_16(x)
+#define le16toh(x) __bswap_16(x)
+#define htole32(x) __bswap_32(x)
+#define le32toh(x) __bswap_32(x)
+#define htole64(x) __bswap_64(x)
+#define le64toh(x) __bswap_64(x)
+#endif
+#endif
+
 namespace base {
 
 	// These are just little wrapper types to make the compiler