how gcc -I works?

[xu zhou]

Hi all,
   I want to include header files from /usr/src/linux/include because
I want to compile a module. I use the gcc -I option. It include header
files from the correct path but the header files alse include header
files , and those header files are included from /usr/include which is
my common include path.  I don't know how to fix it , can anyone help
me ?  Thank you.

  Best Wishes,
  zhouxu