Re: Enhancement patch for cpp

[Ben Elliston <bje at cygnus dot com>]

zack@rabi.columbia.edu (Zack Weinberg) writes:

> I meant that the warnings are repeated for each compiler invocation.
> For even a small number of source (.c) files in a package, that would
> get annoying fast.

So does compiling applications that use /usr/include/X11 when the
function prototypes assume the `int' return type!  Nevertheless, the
warnings are correct.

The problem I had with adding a `-Wmissing-include-dirs' flag was that 
the warning is most sensibly issued as the -I arguments are process.
Unless the -W warning option is used before the -I options on the
command line, the warning will not fire.

Without adding explicit code to walk through the include search path
*after* argument processing, adding a -W switch seems
unworkable. Suggestions?

Ben