发自我的 iPhone

> 在 2015年6月13日,上午10:31,Alexei Starovoitov <a...@plumgrid.com> 写道:
> 
>> On 6/11/15 10:35 PM, Wang Nan wrote:
>>         # Path to clang. If omit, search it from $PATH.
>>    clang-path = "/path/to/clang"
> 
> I think this bit and search_program() from the next patch is
> overly flexible. It's always delicate to search file paths.
> Unless this is really needed, I would drop this bit.

I think searching clang before execution is still equired. If not, we are 
unable to know the exact reason why the shell script failed. If there's no 
clang at all, we can simply return an error instead of trying to detect kbuild 
and kernel header. Which is slower than clang compiling itself.

What about creating another shell script simply run 'clang --version' to check 
availability of clang? Then search_program can be dropped.

Thank you.

> popen() in the next patch executes clang via shell,
> so explicit PATH search in unnecessary.
> 
> The rest of the patches look good to me.
> Thanks again.
> 

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