[-mm patch] more updates for the gcc >= 3.2 requirement

From: Adrian Bunk
Date: Thu Dec 15 2005 - 16:24:19 EST

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This patch contains some documentation updates and removes some code
paths for gcc < 3.2.

Signed-off-by: Adrian Bunk <bunk@xxxxxxxxx>

---

Documentation/Changes | 31 ++++----------------------
README | 7 +----
arch/arm/kernel/asm-offsets.c | 2 -
arch/i386/Kconfig | 4 ---
arch/i386/Makefile | 5 ----
arch/i386/Makefile.cpu | 10 ++++----
arch/ia64/Makefile | 4 ---
drivers/media/video/v4l2-common.c | 2 -
fs/ocfs2/cluster/masklog.h | 7 ++---
include/asm-alpha/compiler.h | 2 -
include/asm-alpha/processor.h | 21 -----------------
include/asm-ia64/bug.h | 6 -----
include/asm-ia64/spinlock.h | 2 -
include/asm-sparc64/system.h | 4 ---
include/linux/byteorder/generic.h | 2 -
include/linux/byteorder/swab.h | 2 -
include/linux/byteorder/swabb.h | 2 -
include/linux/compiler-gcc.h | 9 +++++++
include/linux/compiler-gcc3.h | 17 --------------
include/linux/compiler-gcc4.h | 7 -----
include/linux/kernel.h | 2 -
sound/isa/wavefront/wavefront_synth.c | 7 -----
22 files changed, 31 insertions(+), 124 deletions(-)

--- linux-2.6.15-rc5-mm3-full/README.old 2005-12-15 13:45:38.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/README 2005-12-15 13:45:56.000000000 +0100
@@ -181,15 +181,12 @@
should probably answer 'n' to the questions for
"development", "experimental", or "debugging" features.

COMPILING the kernel:

- - Make sure you have gcc 2.95.3 available.
- gcc 2.91.66 (egcs-1.1.2), and gcc 2.7.2.3 are known to miscompile
- some parts of the kernel, and are *no longer supported*.
- Also remember to upgrade your binutils package (for as/ld/nm and company)
- if necessary. For more information, refer to Documentation/Changes.
+ - Make sure you have at least gcc 3.2 available.
+ For more information, refer to Documentation/Changes.

Please note that you can still run a.out user programs with this kernel.

- Do a "make" to create a compressed kernel image. It is also
possible to do "make install" if you have lilo installed to suit the
--- linux-2.6.15-rc5-mm3-full/Documentation/Changes.old 2005-12-15 13:46:07.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/Documentation/Changes 2005-12-15 14:02:18.000000000 +0100
@@ -29,12 +29,10 @@
al español de este documento en varios formatos.

Eine deutsche Version dieser Datei finden Sie unter
<http://www.stefan-winter.de/Changes-2.4.0.txt>.

-Last updated: October 29th, 2002
-
Chris Ricker (kaboom@xxxxxxxxxx or chris.ricker@xxxxxxxxxxxxxxxxx).

Current Minimal Requirements
============================

@@ -46,11 +44,11 @@
functionally running a Linux 2.4 kernel. Also, not all tools are
necessary on all systems; obviously, if you don't have any ISDN
hardware, for example, you probably needn't concern yourself with
isdn4k-utils.

-o Gnu C 2.95.3 # gcc --version
+o Gnu C 3.2 # gcc --version
o Gnu make 3.79.1 # make --version
o binutils 2.12 # ld -v
o util-linux 2.10o # fdformat --version
o module-init-tools 0.9.10 # depmod -V
o e2fsprogs 1.29 # tune2fs
@@ -73,30 +71,11 @@

GCC
---

The gcc version requirements may vary depending on the type of CPU in your
-computer. The next paragraph applies to users of x86 CPUs, but not
-necessarily to users of other CPUs. Users of other CPUs should obtain
-information about their gcc version requirements from another source.
-
-The recommended compiler for the kernel is gcc 2.95.x (x >= 3), and it
-should be used when you need absolute stability. You may use gcc 3.0.x
-instead if you wish, although it may cause problems. Later versions of gcc
-have not received much testing for Linux kernel compilation, and there are
-almost certainly bugs (mainly, but not exclusively, in the kernel) that
-will need to be fixed in order to use these compilers. In any case, using
-pgcc instead of plain gcc is just asking for trouble.
-
-The Red Hat gcc 2.96 compiler subtree can also be used to build this tree.
-You should ensure you use gcc-2.96-74 or later. gcc-2.96-54 will not build
-the kernel correctly.
-
-In addition, please pay attention to compiler optimization. Anything
-greater than -O2 may not be wise. Similarly, if you choose to use gcc-2.95.x
-or derivatives, be sure not to use -fstrict-aliasing (which, depending on
-your version of gcc 2.95.x, may necessitate using -fno-strict-aliasing).
+computer.

Make
----

You will need Gnu make 3.79.1 or later to build the kernel.
@@ -328,13 +307,13 @@
========================

Kernel compilation
******************

-gcc 2.95.3
-----------
-o <ftp://ftp.gnu.org/gnu/gcc/gcc-2.95.3.tar.gz>
+gcc
+---
+o <ftp://ftp.gnu.org/gnu/gcc/>

Make
----
o <ftp://ftp.gnu.org/gnu/make/>

--- linux-2.6.15-rc5-mm3-full/include/linux/compiler-gcc.h.old 2005-12-15 13:31:21.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/include/linux/compiler-gcc.h 2005-12-15 14:08:36.000000000 +0100
@@ -13,5 +13,14 @@
shouldn't recognize the original var, and make assumptions about it */
#define RELOC_HIDE(ptr, off) \
({ unsigned long __ptr; \
__asm__ ("" : "=g"(__ptr) : "0"(ptr)); \
(typeof(ptr)) (__ptr + (off)); })
+
+
+#define inline inline __attribute__((always_inline))
+#define __inline__ __inline__ __attribute__((always_inline))
+#define __inline __inline __attribute__((always_inline))
+#define __deprecated __attribute__((deprecated))
+#define noinline __attribute__((noinline))
+#define __attribute_pure__ __attribute__((pure))
+#define __attribute_const__ __attribute__((__const__))
--- linux-2.6.15-rc5-mm3-full/include/linux/compiler-gcc3.h.old 2005-12-15 13:30:50.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/include/linux/compiler-gcc3.h 2005-12-15 13:33:45.000000000 +0100
@@ -1,32 +1,15 @@
/* Never include this file directly. Include <linux/compiler.h> instead. */

/* 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
-
#if __GNUC_MINOR__ >= 4
#define __must_check __attribute__((warn_unused_result))
#endif

--- linux-2.6.15-rc5-mm3-full/include/linux/compiler-gcc4.h.old 2005-12-15 13:33:57.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/include/linux/compiler-gcc4.h 2005-12-15 13:34:28.000000000 +0100
@@ -1,16 +1,9 @@
/* Never include this file directly. Include <linux/compiler.h> instead. */

/* These definitions are for GCC v4.x. */
#include <linux/compiler-gcc.h>

-#define inline inline __attribute__((always_inline))
-#define __inline__ __inline__ __attribute__((always_inline))
-#define __inline __inline __attribute__((always_inline))
-#define __deprecated __attribute__((deprecated))
#define __attribute_used__ __attribute__((__used__))
-#define __attribute_pure__ __attribute__((pure))
-#define __attribute_const__ __attribute__((__const__))
-#define noinline __attribute__((noinline))
#define __must_check __attribute__((warn_unused_result))
#define __compiler_offsetof(a,b) __builtin_offsetof(a,b)

--- linux-2.6.15-rc5-mm3-full/arch/arm/kernel/asm-offsets.c.old 2005-12-15 13:34:55.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/arch/arm/kernel/asm-offsets.c 2005-12-15 13:35:11.000000000 +0100
@@ -27,11 +27,11 @@
* GCC 3.2.0: incorrect function argument offset calculation.
* GCC 3.2.x: miscompiles NEW_AUX_ENT in fs/binfmt_elf.c
* (http://gcc.gnu.org/PR8896) and incorrect structure
* initialisation in fs/jffs2/erase.c
*/
-#if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
+#if (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
#error Your compiler is too buggy; it is known to miscompile kernels.
#error Known good compilers: 3.3
#endif

/* Use marker if you need to separate the values later */
--- linux-2.6.15-rc5-mm3-full/fs/ocfs2/cluster/masklog.h.old 2005-12-15 13:35:25.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/fs/ocfs2/cluster/masklog.h 2005-12-15 14:03:13.000000000 +0100
@@ -210,15 +210,14 @@

#define mlog_entry_void() do { \
mlog(ML_ENTRY, "ENTRY:\n"); \
} while (0)

-/* We disable this for old compilers since they don't have support for
- * __builtin_types_compatible_p.
+/*
+ * We disable this for sparse.
*/
-#if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) && \
- !defined(__CHECKER__)
+#if !defined(__CHECKER__)
#define mlog_exit(st) do { \
if (__builtin_types_compatible_p(typeof(st), unsigned long)) \
mlog(ML_EXIT, "EXIT: %lu\n", (unsigned long) (st)); \
else if (__builtin_types_compatible_p(typeof(st), signed long)) \
mlog(ML_EXIT, "EXIT: %ld\n", (signed long) (st)); \
--- linux-2.6.15-rc5-mm3-full/include/asm-alpha/compiler.h.old 2005-12-15 13:36:45.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/include/asm-alpha/compiler.h 2005-12-15 13:36:57.000000000 +0100
@@ -96,11 +96,9 @@

#include <linux/compiler.h>
#undef inline
#undef __inline__
#undef __inline
-#if __GNUC__ == 3 && __GNUC_MINOR__ >= 1 || __GNUC__ > 3
#undef __always_inline
#define __always_inline inline __attribute__((always_inline))
-#endif

#endif /* __ALPHA_COMPILER_H */
--- linux-2.6.15-rc5-mm3-full/include/asm-alpha/processor.h.old 2005-12-15 13:37:07.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/include/asm-alpha/processor.h 2005-12-15 13:37:22.000000000 +0100
@@ -75,11 +75,10 @@
#ifndef CONFIG_SMP
/* Nothing to prefetch. */
#define spin_lock_prefetch(lock) do { } while (0)
#endif

-#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
extern inline void prefetch(const void *ptr)
{
__builtin_prefetch(ptr, 0, 3);
}

@@ -93,26 +92,6 @@
{
__builtin_prefetch(ptr, 1, 3);
}
#endif

-#else
-extern inline void prefetch(const void *ptr)
-{
- __asm__ ("ldl $31,%0" : : "m"(*(char *)ptr));
-}
-
-extern inline void prefetchw(const void *ptr)
-{
- __asm__ ("ldq $31,%0" : : "m"(*(char *)ptr));
-}
-
-#ifdef CONFIG_SMP
-extern inline void spin_lock_prefetch(const void *ptr)
-{
- __asm__ ("ldq $31,%0" : : "m"(*(char *)ptr));
-}
-#endif
-
-#endif /* GCC 3.1 */
-
#endif /* __ASM_ALPHA_PROCESSOR_H */
--- linux-2.6.15-rc5-mm3-full/include/asm-ia64/bug.h.old 2005-12-15 13:37:34.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/include/asm-ia64/bug.h 2005-12-15 13:37:48.000000000 +0100
@@ -1,14 +1,10 @@
#ifndef _ASM_IA64_BUG_H
#define _ASM_IA64_BUG_H

#ifdef CONFIG_BUG
-#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
-# define ia64_abort() __builtin_trap()
-#else
-# define ia64_abort() (*(volatile int *) 0 = 0)
-#endif
+#define ia64_abort() __builtin_trap()
#define BUG() do { printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); ia64_abort(); } while (0)

/* should this BUG be made generic? */
#define HAVE_ARCH_BUG
#endif
--- linux-2.6.15-rc5-mm3-full/include/asm-ia64/spinlock.h.old 2005-12-15 13:38:00.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/include/asm-ia64/spinlock.h 2005-12-15 13:38:07.000000000 +0100
@@ -32,11 +32,11 @@
static inline void
__raw_spin_lock_flags (raw_spinlock_t *lock, unsigned long flags)
{
register volatile unsigned int *ptr asm ("r31") = &lock->lock;

-#if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
+#if (__GNUC__ == 3 && __GNUC_MINOR__ < 3)
# ifdef CONFIG_ITANIUM
/* don't use brl on Itanium... */
asm volatile ("{\n\t"
" mov ar.ccv = r0\n\t"
" mov r28 = ip\n\t"
--- linux-2.6.15-rc5-mm3-full/include/linux/kernel.h.old 2005-12-15 13:38:28.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/include/linux/kernel.h 2005-12-15 13:38:36.000000000 +0100
@@ -315,10 +315,8 @@
#else
#define randomize_va_space 1
#endif

/* Trap pasters of __FUNCTION__ at compile-time */
-#if __GNUC__ > 2 || __GNUC_MINOR__ >= 95
#define __FUNCTION__ (__func__)
-#endif

#endif
--- linux-2.6.15-rc5-mm3-full/sound/isa/wavefront/wavefront_synth.c.old 2005-12-15 13:39:11.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/sound/isa/wavefront/wavefront_synth.c 2005-12-15 13:39:45.000000000 +0100
@@ -113,22 +113,15 @@

#define WF_DEBUG 1

#ifdef WF_DEBUG

-#if defined(NEW_MACRO_VARARGS) || __GNUC__ >= 3
#define DPRINT(cond, ...) \
if ((dev->debug & (cond)) == (cond)) { \
snd_printk (__VA_ARGS__); \
}
#else
-#define DPRINT(cond, args...) \
- if ((dev->debug & (cond)) == (cond)) { \
- snd_printk (args); \
- }
-#endif
-#else
#define DPRINT(cond, args...)
#endif /* WF_DEBUG */

#define LOGNAME "WaveFront: "

--- linux-2.6.15-rc5-mm3-full/drivers/media/video/v4l2-common.c.old 2005-12-15 13:40:21.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/drivers/media/video/v4l2-common.c 2005-12-15 13:40:30.000000000 +0100
@@ -189,13 +189,11 @@
[V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
[V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
};

char *v4l2_ioctl_names[256] = {
-#if __GNUC__ >= 3
[0 ... 255] = "UNKNOWN",
-#endif
[_IOC_NR(VIDIOC_QUERYCAP)] = "VIDIOC_QUERYCAP",
[_IOC_NR(VIDIOC_RESERVED)] = "VIDIOC_RESERVED",
[_IOC_NR(VIDIOC_ENUM_FMT)] = "VIDIOC_ENUM_FMT",
[_IOC_NR(VIDIOC_G_FMT)] = "VIDIOC_G_FMT",
[_IOC_NR(VIDIOC_S_FMT)] = "VIDIOC_S_FMT",
--- linux-2.6.15-rc5-mm3-full/include/asm-sparc64/system.h.old 2005-12-15 13:40:55.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/include/asm-sparc64/system.h 2005-12-15 13:41:03.000000000 +0100
@@ -191,15 +191,11 @@
* the output value of 'last'. 'next' is not referenced again
* past the invocation of switch_to in the scheduler, so we need
* not preserve it's value. Hairy, but it lets us remove 2 loads
* and 2 stores in this critical code path. -DaveM
*/
-#if __GNUC__ >= 3
#define EXTRA_CLOBBER ,"%l1"
-#else
-#define EXTRA_CLOBBER
-#endif
#define switch_to(prev, next, last) \
do { if (test_thread_flag(TIF_PERFCTR)) { \
unsigned long __tmp; \
read_pcr(__tmp); \
current_thread_info()->pcr_reg = __tmp; \
--- linux-2.6.15-rc5-mm3-full/include/linux/byteorder/generic.h.old 2005-12-15 13:41:19.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/include/linux/byteorder/generic.h 2005-12-15 13:41:27.000000000 +0100
@@ -154,11 +154,11 @@
extern __u32 ntohl(__be32);
extern __be32 htonl(__u32);
extern __u16 ntohs(__be16);
extern __be16 htons(__u16);

-#if defined(__GNUC__) && (__GNUC__ >= 2) && defined(__OPTIMIZE__)
+#if defined(__GNUC__) && defined(__OPTIMIZE__)

#define ___htonl(x) __cpu_to_be32(x)
#define ___htons(x) __cpu_to_be16(x)
#define ___ntohl(x) __be32_to_cpu(x)
#define ___ntohs(x) __be16_to_cpu(x)
--- linux-2.6.15-rc5-mm3-full/include/linux/byteorder/swab.h.old 2005-12-15 13:41:34.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/include/linux/byteorder/swab.h 2005-12-15 13:41:45.000000000 +0100
@@ -108,11 +108,11 @@

/*
* Allow constant folding
*/
-#if defined(__GNUC__) && (__GNUC__ >= 2) && defined(__OPTIMIZE__)
+#if defined(__GNUC__) && defined(__OPTIMIZE__)
# define __swab16(x) \
(__builtin_constant_p((__u16)(x)) ? \
___swab16((x)) : \
__fswab16((x)))
# define __swab32(x) \
--- linux-2.6.15-rc5-mm3-full/include/linux/byteorder/swabb.h.old 2005-12-15 13:41:52.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/include/linux/byteorder/swabb.h 2005-12-15 13:42:00.000000000 +0100
@@ -75,11 +75,11 @@

/*
* Allow constant folding
*/
-#if defined(__GNUC__) && (__GNUC__ >= 2) && defined(__OPTIMIZE__)
+#if defined(__GNUC__) && defined(__OPTIMIZE__)
# define __swahw32(x) \
(__builtin_constant_p((__u32)(x)) ? \
___swahw32((x)) : \
__fswahw32((x)))
# define __swahb32(x) \
--- linux-2.6.15-rc5-mm3-full/arch/i386/Makefile.old 2005-12-15 13:42:54.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/arch/i386/Makefile 2005-12-15 13:43:12.000000000 +0100
@@ -35,14 +35,11 @@
CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)

# CPU-specific tuning. Anything which can be shared with UML should go here.
include $(srctree)/arch/i386/Makefile.cpu

-# -mregparm=3 works ok on gcc-3.0 and later
-#
-GCC_VERSION := $(call cc-version)
-cflags-$(CONFIG_REGPARM) += $(shell if [ $(GCC_VERSION) -ge 0300 ] ; then echo "-mregparm=3"; fi ;)
+cflags-$(CONFIG_REGPARM) += -mregparm=3

# Disable unit-at-a-time mode, it makes gcc use a lot more stack
# due to the lack of sharing of stacklots.
CFLAGS += $(call cc-option,-fno-unit-at-a-time)

--- linux-2.6.15-rc5-mm3-full/arch/i386/Makefile.cpu.old 2005-12-15 13:53:25.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/arch/i386/Makefile.cpu 2005-12-15 14:00:34.000000000 +0100
@@ -1,9 +1,9 @@
# CPU tuning section - shared with UML.
# Must change only cflags-y (or [yn]), not CFLAGS! That makes a difference for UML.

-#-mtune exists since gcc 3.4, and some -mcpu flavors didn't exist in gcc 2.95.
+#-mtune exists since gcc 3.4
HAS_MTUNE := $(call cc-option-yn, -mtune=i386)
ifeq ($(HAS_MTUNE),y)
tune = $(call cc-option,-mtune=$(1),)
else
tune = $(call cc-option,-mcpu=$(1),)
@@ -12,21 +12,21 @@
align := $(cc-option-align)
cflags-$(CONFIG_M386) += -march=i386
cflags-$(CONFIG_M486) += -march=i486
cflags-$(CONFIG_M586) += -march=i586
cflags-$(CONFIG_M586TSC) += -march=i586
-cflags-$(CONFIG_M586MMX) += $(call cc-option,-march=pentium-mmx,-march=i586)
+cflags-$(CONFIG_M586MMX) += -march=pentium-mmx
cflags-$(CONFIG_M686) += -march=i686
cflags-$(CONFIG_MPENTIUMII) += -march=i686 $(call tune,pentium2)
cflags-$(CONFIG_MPENTIUMIII) += -march=i686 $(call tune,pentium3)
cflags-$(CONFIG_MPENTIUMM) += -march=i686 $(call tune,pentium3)
cflags-$(CONFIG_MPENTIUM4) += -march=i686 $(call tune,pentium4)
cflags-$(CONFIG_MK6) += -march=k6
# Please note, that patches that add -march=athlon-xp and friends are pointless.
# They make zero difference whatsosever to performance at this time.
-cflags-$(CONFIG_MK7) += $(call cc-option,-march=athlon,-march=i686 $(align)-functions=4)
-cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8,$(call cc-option,-march=athlon,-march=i686 $(align)-functions=4))
+cflags-$(CONFIG_MK7) += -march=athlon
+cflags-$(CONFIG_MK8) += $(call cc-option,-march=k8,-march=athlon)
cflags-$(CONFIG_MCRUSOE) += -march=i686 $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
cflags-$(CONFIG_MEFFICEON) += -march=i686 $(call tune,pentium3) $(align)-functions=0 $(align)-jumps=0 $(align)-loops=0
cflags-$(CONFIG_MWINCHIPC6) += $(call cc-option,-march=winchip-c6,-march=i586)
cflags-$(CONFIG_MWINCHIP2) += $(call cc-option,-march=winchip2,-march=i586)
cflags-$(CONFIG_MWINCHIP3D) += $(call cc-option,-march=winchip2,-march=i586)
@@ -35,7 +35,7 @@

# AMD Elan support
cflags-$(CONFIG_X86_ELAN) += -march=i486

# Geode GX1 support
-cflags-$(CONFIG_MGEODEGX1) += $(call cc-option,-march=pentium-mmx,-march=i486)
+cflags-$(CONFIG_MGEODEGX1) += -march=pentium-mmx

--- linux-2.6.15-rc5-mm3-full/arch/ia64/Makefile.old 2005-12-15 13:43:28.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/arch/ia64/Makefile 2005-12-15 13:43:57.000000000 +0100
@@ -35,14 +35,10 @@
static binary of such an assembler at: \
\
ftp://ftp.hpl.hp.com/pub/linux-ia64/gas-030124.tar.gz)
endif

-ifneq ($(shell if [ $(GCC_VERSION) -lt 0300 ] ; then echo "bad"; fi ;),)
-$(error Sorry, your compiler is too old. GCC v2.96 is known to generate bad code.)
-endif
-
ifeq ($(GCC_VERSION),0304)
cflags-$(CONFIG_ITANIUM) += -mtune=merced
cflags-$(CONFIG_MCKINLEY) += -mtune=mckinley
endif

--- linux-2.6.15-rc5-mm3-full/arch/i386/Kconfig.old 2005-12-15 13:45:06.000000000 +0100
+++ linux-2.6.15-rc5-mm3-full/arch/i386/Kconfig 2005-12-15 13:45:15.000000000 +0100
@@ -628,14 +628,10 @@
help
Compile the kernel with -mregparm=3. This uses a different ABI
and passes the first three arguments of a function call in registers.
This will probably break binary only modules.

- This feature is only enabled for gcc-3.0 and later - earlier compilers
- generate incorrect output with certain kernel constructs when
- -mregparm=3 is used.
-
config SECCOMP
bool "Enable seccomp to safely compute untrusted bytecode"
depends on PROC_FS
default y
help

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