dear list

dear list

[gaoqiang]

Recently,I got some trouble reading the kernel source.  There are so 
many macro def in the source tree and I don't know whether some one wad 
defined or not.

So,is there any way to just preprocessor to eliminate these macros , 
similiar to gcc -E ???


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Re: dear list

[Peter Teoh]

On Sat, Sep 4, 2010 at 11:42 AM, gaoqiang <834555262@qq.com> wrote:
> Recently,I got some trouble reading the kernel source.  There are so many
> macro def in the source tree and I don't know whether some one wad defined
> or not.
>
> So,is there any way to just preprocessor to eliminate these macros ,
> similiar to gcc -E ???
>

pros and cons...."-E" will generate so much intermediate output that
you will be drowned in source codes.

alternatively....it is better to zoom down via learning how to use
ctags with "vi", and direct disassembly via "objdump" to see which
macro it matches to.

http://www.yolinux.com/TUTORIALS/LinuxTutorialAdvanced_vi.html

but first u must generate the tag file with "make tags" on the kernel
source first.

>
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Regards,
Peter Teoh
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Re: dear list

[Om Narasimhan]

http://kernelnewbies.org/FAQ/KernelCrossCompilation
check the last part, I have written how to get the preprocessed output.

HTH,
Om.

On Sun, Sep 5, 2010 at 9:57 PM, Peter Teoh <htmldeveloper@gmail.com> wrote:
> On Sat, Sep 4, 2010 at 11:42 AM, gaoqiang <834555262@qq.com> wrote:
>> Recently,I got some trouble reading the kernel source.  There are so many
>> macro def in the source tree and I don't know whether some one wad defined
>> or not.
>>
>> So,is there any way to just preprocessor to eliminate these macros ,
>> similiar to gcc -E ???
>>
>
> pros and cons...."-E" will generate so much intermediate output that
> you will be drowned in source codes.
>
> alternatively....it is better to zoom down via learning how to use
> ctags with "vi", and direct disassembly via "objdump" to see which
> macro it matches to.
>
> http://www.yolinux.com/TUTORIALS/LinuxTutorialAdvanced_vi.html
>
> but first u must generate the tag file with "make tags" on the kernel
> source first.
>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> Please read the FAQ at http://www.linux-learn.org/faqs
>>
>
>
>
> --
> Regards,
> Peter Teoh
> --
> To unsubscribe from this list: send the line "unsubscribe linux-newbie" in
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