Re: conflicting definitions in /usr/include/
On Wed, Sep 11, 2002 at 03:27:22AM -0400, Noah Meyerhans wrote:
> On Wed, Sep 11, 2002 at 11:37:29AM +1000, Martijn van Oosterhout wrote:
> > The reason why they both have it is that the linux/* definition are the
> > kernel ones, the netinet/in.h ones are what glibc copied from the kernel
> > ones. Userspace programs should *never* include linux/* headers. If you need
> > an interface not in glibc, you should bug them to make appropriate copies.
> That's what I expected.
> So I've successfully updated traceroute6 to use all the right bits from
> glibc and not touch /usr/include/linux/ at all. tracepath and
> tracepath6 are a bit harder, though, since they make use of Linux error
> queues as defined in /usr/include/linux/errqueue.h. I can't seem to
> find any interface between the glibc headers and the kernel. Does one
> exist, or will these programs continue to require linux/errqueue.h?
Well, if there is no alternative, I guess you can't avoid it. It also makes
the code linux specific. But when it comes to networking stuff which works
cross platform/architechture, use the interfaces provided.
> > Maybe the fix is as simple as deleting any lines saying #include <linux/*>
> > and remove all those editted header files too.
> It was almost that easy, but some types needed to be updated since the
> code was using things like __u32, which is defined in linux/types.h.
If it works across all the required platforms, you've suceeded. Ofcourse,
when BSD and Hurd get added to Debian, you can do it again :)
Martijn van Oosterhout <firstname.lastname@example.org> http://svana.org/kleptog/
> There are 10 kinds of people in the world, those that can do binary
> arithmetic and those that can't.