On Tue, 2011-08-09 at 00:27 -0700, David Miller wrote: > From: Ben Hutchings <ben@xxxxxxxxxxxxxxx> > Date: Mon, 08 Aug 2011 14:25:19 +0100 > > > <linux/if_ppp.h> uses various types defined in <linux/ppp_defs.h>. > > > > Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx> > > Unfortunately there is a "net/if_ppp.h" provided by glibc that > includes "net/ppp_defs.h", and all of this is presumably in order > to discourage direct use of the kernel headers. > > Even though net/ppp_defs.h ends up including linux/ppp_defs.h > anyways. > > Whilst I think your efforts are to be commended, we can't start doing > or else we'll start breaking the build in various unexpected ways. > > The SIOCDEVPRIVATE (defined by GLIBC in bits/ioctls.h) case is just > one such example. I did try to check for these cases, but obviously missed some. I'll re-post the series without these ones. In the longer term I would really like to solve this mess somehow. glibc is obviously duplicating a lot of definitions in different headers (but tends to lag behind a little) and other C libraries may also have to duplicate that work for compatibility. Some kernel headers already *do* include headers such as <linux/if.h> that can conflict with C library headers, sometimes requiring userland to work around the conflict somehow. Ben.
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