On Thu, Feb 10, 2005 at 04:28:58PM +0100, Mikael Pettersson wrote:
> Here is a preliminary set of patches to allow gcc-4.0 (20050130)
> to compile the 2.4.30-pre1 kernel. I make no claim that the patches
> are complete, but they have been tested successfully on i386 (multiple
> boxes), x86-64, and ppc32.
>
> The changes fall into these categories:
>...
> - Add -Wno-pointer-sign to silence lots of compiler warnings.
>...
> /Mikael
>...
> --- linux-2.4.30-pre1/arch/i386/Makefile 2004-11-17 18:36:41.000000000
> +0100
> +++ linux-2.4.30-pre1.gcc4-fixes-v5/arch/i386/Makefile 2005-02-10
> 14:35:01.000000000 +0100
> @@ -98,6 +98,9 @@ endif
> # due to the lack of sharing of stacklots.
> CFLAGS += $(call check_gcc,-fno-unit-at-a-time,)
>
> +# disable pointer signedness warnings in gcc 4.0
> +CFLAGS += $(call check_gcc,-Wno-pointer-sign,)
> +
> HEAD := arch/i386/kernel/head.o arch/i386/kernel/init_task.o
>
> SUBDIRS += arch/i386/kernel arch/i386/mm arch/i386/lib
> diff -rupN linux-2.4.30-pre1/arch/ppc/Makefile
> linux-2.4.30-pre1.gcc4-fixes-v5/arch/ppc/Makefile
> --- linux-2.4.30-pre1/arch/ppc/Makefile 2004-04-14 20:22:20.000000000
> +0200
> +++ linux-2.4.30-pre1.gcc4-fixes-v5/arch/ppc/Makefile 2005-02-10
> 14:35:01.000000000 +0100
> @@ -25,6 +25,11 @@ CFLAGS := $(CFLAGS) -I$(TOPDIR)/arch/$(
> HOSTCFLAGS += -I$(TOPDIR)/arch/$(ARCH)
> CPP = $(CC) -E $(CFLAGS)
>
> +check_gcc = $(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null
> 2>&1; then echo "$(1)"; else echo "$(2)"; fi)
> +
> +# disable pointer signedness warnings in gcc 4.0
> +CFLAGS += $(call check_gcc,-Wno-pointer-sign,)
> +
> ifdef CONFIG_4xx
> CFLAGS := $(CFLAGS) -Wa,-m405
> endif
>...
> --- linux-2.4.30-pre1/arch/x86_64/Makefile 2004-04-14 20:22:20.000000000
> +0200
> +++ linux-2.4.30-pre1.gcc4-fixes-v5/arch/x86_64/Makefile 2005-02-10
> 14:35:01.000000000 +0100
> @@ -56,6 +56,9 @@ endif
> # this is needed right now for the 32bit ioctl code
> CFLAGS += $(call check_gcc,-fno-unit-at-a-time,)
>
> +# disable pointer signedness warnings in gcc 4.0
> +CFLAGS += $(call check_gcc,-Wno-pointer-sign,)
> +
> ifdef CONFIG_MK8
> CFLAGS += $(call check_gcc,-march=k8,)
> endif
>...
Shouldn't the first part of these three patches (adding
-Wno-pointer-sign to the main Makefile be enough)?
That's also how it's handled in 2.6 .
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
