Include paths: no "-I." please

[overbored]

How do I tell automake not to pass "-I." to g++/gcc? Thanks in advance.

(The problem is that this project has a string.h, which conflicts with 
the standard string.h. Besides, why "-I." in the first place? Is it 
because some people prefer #include <blah> over #include "blah" for 
their own header files as well?)