compiler: set minimum compiler version to GCC 4.1.0

[fio.git] / compiler / compiler.h

diff --git a/compiler/compiler.h b/compiler/compiler.h
index 20df21d050c3ba7941e705bf51140430dd7b237a..dacb737910c0f890de63bb5b4b3030d6fa1311fc 100644 (file)
--- a/compiler/compiler.h
+++ b/compiler/compiler.h
@@ -1,14 +1,13 @@
 #ifndef FIO_COMPILER_H
 #define FIO_COMPILER_H
-#include <assert.h>
 
-#if __GNUC__ >= 4
+/* IWYU pragma: begin_exports */
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
 #include "compiler-gcc4.h"
-#elif __GNUC__ == 3
-#include "compiler-gcc3.h"
 #else
-#error Compiler too old, need gcc at least gcc 3.x
+#error Compiler too old, need at least gcc 4.1.0
 #endif
+/* IWYU pragma: end_exports */
 
 #ifndef __must_check
 #define __must_check
@@ -69,4 +68,9 @@
 
 #endif
 
+#ifdef FIO_INTERNAL
+#define ARRAY_SIZE(x)    (sizeof((x)) / (sizeof((x)[0])))
+#define FIELD_SIZE(s, f) (sizeof(((typeof(s))0)->f))
+#endif
+
 #endif