linux-kernel - Re: [PATCH] arch: avr32: Makefile: add '-D__linux_

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Date:	Sat, 1 Feb 2014 13:56:27 +0100
From:	Richard Weinberger <richard.weinberger@...il.com>
To:	Chen Gang <gang.chen.5i5j@...il.com>
Cc:	hskinnemoen@...il.com, egtvedt@...fundet.no,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arch: avr32: Makefile: add '-D__linux__' flag for
 gcc-4.4.7 using.

On Sat, Feb 1, 2014 at 1:35 PM, Chen Gang <gang.chen.5i5j@...il.com> wrote:
> For avr32 cross compiler, do not define '__linux__' internally, so it
> will cause issue with allmodconfig.

Isn't this a toolchain bug?

> The related error:
>
>     CC [M]  fs/coda/psdev.o
>   In file included from include/linux/coda.h:64,
>                    from fs/coda/psdev.c:45:
>   include/uapi/linux/coda.h:221: error: expected specifier-qualifier-list before 'u_quad_t'
>
> The related toolchain version (which only download, not re-compile):
>
>   [root@...en linux-next]# /upstream/toolchain/download/avr32-gnu-toolchain-linux_x86/bin/avr32-gcc -v
>   Using built-in specs.
>   Target: avr32
>   Configured with: /data2/home/toolsbuild/jenkins-knuth/workspace/avr32-gnu-toolchain/src/gcc/configure --target=avr32 --host=i686-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/home/toolsbuild/jenkins-knuth/workspace/avr32-gnu-toolchain/avr32-gnu-toolchain-linux_x86 --enable-languages=c,c++ --disable-nls --disable-libssp --disable-libstdcxx-pch --with-dwarf2 --enable-version-specific-runtime-libs --disable-shared --enable-doc --with-mpfr-lib=/home/toolsbuild/jenkins-knuth/workspace/avr32-gnu-toolchain/avr32-gnu-toolchain-linux_x86/lib --with-mpfr-include=/home/toolsbuild/jenkins-knuth/workspace/avr32-gnu-toolchain/avr32-gnu-toolchain-linux_x86/include --with-gmp=/home/toolsbuild/jenkins-knuth/workspace/avr32-gnu-toolchain/avr32-gnu-toolchain-linux_x86 --with-mpc=/home/toolsbuild/jenkins-knuth/workspace/avr32-gnu-toolchain/avr32-gnu-toolchain-linux_x86 --enable-__cxa_atexit --disable-shared --with-newlib --with-pkgversion=AVR_32_bit_GNU_Toolchain_3.4.2_435 --with-bugurl=http://www
> .atmel.com/avr
>   Thread model: single
>   gcc version 4.4.7 (AVR_32_bit_GNU_Toolchain_3.4.2_435)
>
>
> Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com>
> ---
>  arch/avr32/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/avr32/Makefile b/arch/avr32/Makefile
> index 22fb665..dba48a5 100644
> --- a/arch/avr32/Makefile
> +++ b/arch/avr32/Makefile
> @@ -11,7 +11,7 @@ all: uImage vmlinux.elf
>
>  KBUILD_DEFCONFIG       := atstk1002_defconfig
>
> -KBUILD_CFLAGS  += -pipe -fno-builtin -mno-pic
> +KBUILD_CFLAGS  += -pipe -fno-builtin -mno-pic -D__linux__
>  KBUILD_AFLAGS  += -mrelax -mno-pic
>  KBUILD_CFLAGS_MODULE += -mno-relax
>  LDFLAGS_vmlinux        += --relax
> --
> 1.7.11.7
> --
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-- 
Thanks,
//richard
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