on specifying the C source code directory (Was: Re: on ``An Introduction to Programming in Emacs Lisp'')

[Daniel Bastos]

Marcin Borkowski <mbork@mbork.pl> writes:

[...]

> I'd like to point out that one nice benefit of compiling from source
> (apart from staying on the bleeding edge) is that you can easily use C-h
> f to jump to the source code of functions written in C.

You seem a good person to ask then.  I'm able to look up source code in
C source code in a Windows installation.  But I always need to tell it
which is the directory source code.  How could I make sure it knows
which directory that is?

Thank you.