[MINOR] add support for variable size arrays in structures

Depending on the version of GCC, variable size arrays are not
declared in the same manner. Let's add a check for the version
and provide a macro.

diff --git a/include/common/compat.h b/include/common/compat.h
index 8261f8f9820ac0f4cf5bf8e451f31c4630a72b81..1bfe669ab40533325e8bc3389be62ae59a63fb0f 100644 (file)
--- a/include/common/compat.h
+++ b/include/common/compat.h
@@ -22,6 +22,15 @@
 #ifndef _COMMON_COMPAT_H
 #define _COMMON_COMPAT_H
 
+/*
+ * Gcc before 3.0 needs [0] to declare a variable-size array
+ */
+#if  __GNUC__  < 3
+#define VAR_ARRAY      0
+#else
+#define VAR_ARRAY
+#endif
+
 /* This is needed on Linux for Netfilter includes */
 #include <sys/socket.h>
 #include <common/config.h>