This is the mail archive of the gcc-bugs@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]

Re: cpp seems not to include # line "file" output for empty files


Daniel Berlin wrote:-

> Really?
> That's actually pretty surprising.
> I've always just used 2 regexes to scan for #include's, and generate
> the tree that way.
> Is there a particular reason this isn't a good solution that i should
> be aware of?

I don't think that would work very well:

o You would have false dependencies from #includes in skipped
conditional blocks.

o You cannot handle #include MACRO, which does occur in e.g. the
XFree86 code.

You really need to be the preprocessor to get the right dependencies.

Neil.

Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]