Adding include directories (-I)

[John Love-Jensen]

Hi Sebastian,

> No, they are also searched before system includes for #include <blah.h>:

Appears to be a difference in behavior for C and C++ code.

The gcc toolchain driver has the behavior you indicated using test.c; but
the g++ toolchain driver has the behavior I mentioned using test.cpp (given
your example situation).

I was testing against C++, since that's what I normally use.

Mea culpa.  Sorry for any confusion.

--Eljay