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Commit fd285bb5 authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds
Browse files

[PATCH] Abandon gcc-2.95.x 



There's one scsi driver which doesn't compile due to weird __VA_ARGS__ tricks
and the rather useful scsi/sd.c is currently getting an ICE.  None of the new
SAS code compiles, due to extensive use of anonymous unions.  The V4L guys are
very good at exploiting the gcc-2.95.x macro expansion bug (_why_ does each
driver need to implement its own debug macros?) and various people keep on
sneaking in anonymous unions, which are rather nice.

Plus anonymous unions are rather useful.

Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent fe7d37d1

include/linux/compiler-gcc2.h

deleted100644 → 0
+0 −29
Original line number Original line Diff line number Diff line 
/* Never include this file directly.  Include <linux/compiler.h> instead.  */



/* These definitions are for GCC v2.x.  */



/* Somewhere in the middle of the GCC 2.96 development cycle, we implemented

   a mechanism by which the user can annotate likely branch directions and

   expect the blocks to be reordered appropriately.  Define __builtin_expect

   to nothing for earlier compilers.  */

#include <linux/compiler-gcc.h>



#if __GNUC_MINOR__ < 96

# define __builtin_expect(x, expected_value) (x)

#endif



#define __attribute_used__	__attribute__((__unused__))



/*

 * The attribute `pure' is not implemented in GCC versions earlier

 * than 2.96.

 */

#if __GNUC_MINOR__ >= 96

# define __attribute_pure__	__attribute__((pure))

# define __attribute_const__	__attribute__((__const__))

#endif



/* GCC 2.95.x/2.96 recognize __va_copy, but not va_copy. Actually later GCC's

 * define both va_copy and __va_copy, but the latter may go away, so limit this

 * to this header */

#define va_copy			__va_copy

include/linux/compiler.h

+0 −2
Original line number Original line Diff line number Diff line
@@ -42,8 +42,6 @@ extern void __chk_io_ptr(void __iomem *); 
# include <linux/compiler-gcc4.h>

# include <linux/compiler-gcc4.h>

#elif __GNUC__ == 3

#elif __GNUC__ == 3

# include <linux/compiler-gcc3.h>

# include <linux/compiler-gcc3.h>

#elif __GNUC__ == 2

# include <linux/compiler-gcc2.h>

#else

#else

# error Sorry, your compiler is too old/not recognized.

# error Sorry, your compiler is too old/not recognized.

#endif

#endif

init/main.c

+1 −6
Original line number Original line Diff line number Diff line
@@ -58,11 +58,6 @@ 
 * This is one of the first .c files built. Error out early

 * This is one of the first .c files built. Error out early

 * if we have compiler trouble..

 * if we have compiler trouble..

 */

 */

#if __GNUC__ == 2 && __GNUC_MINOR__ == 96

#ifdef CONFIG_FRAME_POINTER

#error This compiler cannot compile correctly with frame pointers enabled

#endif

#endif





#ifdef CONFIG_X86_LOCAL_APIC

#ifdef CONFIG_X86_LOCAL_APIC

#include <asm/smp.h>

#include <asm/smp.h>
@@ -74,7 +69,7 @@ 
 * To avoid associated bogus bug reports, we flatly refuse to compile

 * To avoid associated bogus bug reports, we flatly refuse to compile

 * with a gcc that is known to be too old from the very beginning.

 * with a gcc that is known to be too old from the very beginning.

 */

 */

#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 95)

#if (__GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 2)

#error Sorry, your GCC is too old. It builds incorrect kernels.

#error Sorry, your GCC is too old. It builds incorrect kernels.

#endif

#endif