[U-Boot-Users] RE: u-boot compile failure with gcc-3.4.x and fix.

[Woodruff, Richard]

Or perhaps a gcc header like the kernel is needed and the value changed
to __attributed_used__ .

--------
* These definitions are for GCC v3.x.  */
#include <linux/compiler-gcc.h>

#if __GNUC_MINOR__ >= 1
# define inline		__inline__ __attribute__((always_inline))
# define __inline__	__inline__ __attribute__((always_inline))
# define __inline	__inline__ __attribute__((always_inline))
#endif

#if __GNUC_MINOR__ > 0
# define __deprecated	__attribute__((deprecated))
#endif

#if __GNUC_MINOR__ >= 3
# define __attribute_used__	__attribute__((__used__))
#else
# define __attribute_used__	__attribute__((__unused__))
#endif

#define __attribute_pure__	__attribute__((pure))
#define __attribute_const__	__attribute__((__const__))

#if __GNUC_MINOR__ >= 1
#define  noinline __attribute__((noinline))
#endif

> -----Original Message-----
> From: Woodruff, Richard
> Sent: Thursday, June 10, 2004 2:59 PM
> To: u-boot-users at lists.sourceforge.net
> Subject: u-boot compile failure with gcc-3.4.x and fix.
> 
> Hello,
> 
> I'm noticing that the examples directory fails to compile with
gcc-3.4.0.
> The _exports.h symbols are not making it into stubs.o .
> 
> I found that the compile works if you:
> 
> Change:
> 	static void __attribute__((unused)) dummy(void)
> to:
> 	void __attribute__((unused)) dummy(void)
> 
> This would seem to be a new optimization or bug.  I would expect that
> unused should make it stick around, even if it is not used locally.
> 
> The kernel uses this same construct in a few places mostly in debug
code
> and drivers I don't' use...
> 
> Regards,
> 
> Richard W.