Re: Make sure the searching header file path when building Linux kernel

[Nan Xiao <xiaonan830818@xxxxxxxxx>]

"gcc -xc -E -v -" can show the include search paths.

Best Regards

Nan Xiao

On Wed, Aug 5, 2015 at 6:34 PM, Abhilash Mhaisne <abhilashmhaisne@xxxxxxxxx> wrote:

By default gcc does search under /usr/include. I am not sure about /usr/local/include though.

If header files at the top are #included as "your_build_direc/include/some_header_file.h" then gcc will look into that path.

Otherwise if it is #include <some_header_file.h> , it will search under /usr/include and anything that is under C_INCLUDE_PATH variable. See man page of gcc for more.

Regards, 

Abhilash Mhaisne

On Wed, Aug 5, 2015 at 3:13 PM, Nan Xiao <xiaonan830818@xxxxxxxxx> wrote:

Hi all,

I want to make sure the searching header file path when building Linux kernel:

Per my understanding, the gcc only find header files in current building linux 

directory: include/*, won't search system header file path: such as /usr/inclue,

 /usr/local/include, etc.

Is my understanding right? Thanks very much in advance!

Best Regards

Nan Xiao

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