Date: Thu, 17 May 2001 17:37:54 +0100 From: Brian Somers <brian@Awfulhak.org> To: Warner Losh <imp@village.org> Cc: Brian Somers <brian@Awfulhak.org>, Bruce Evans <bde@zeta.org.au>, cvs-all@FreeBSD.org, current@FreeBSD.org, freebsd-arch@FreeBSD.org Subject: Re: Where to put include files (was: cvs commit: src Makefile.inc1) Message-ID: <200105171637.f4HGbsb65668@hak.lan.Awfulhak.org> In-Reply-To: Message from Warner Losh <imp@village.org> of "Thu, 17 May 2001 10:00:25 MDT." <200105171600.f4HG0Pl05438@billy-club.village.org>
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[cc'd to -arch and not to cvs-committers]
For anyone that's reading -arch and hasn't seen this on -current, the
thread is discussing userland sources that have -I../../sys in their
Makefile and then #include <sys/dev/blahio.h>.
I think everyone agrees that these headers should be made public, the
question is ``where to put them ?''.
Warner wrote:
> In message <200105171233.f4HCXhb62786@hak.lan.Awfulhak.org> Brian
> Somers writes:
> : Solaris calls it's ioctl files /usr/include/sys/<driver>_io.h so I'd
> : spell digiio.h /usr/include/sys/digi_io.h.
>
> Actually, the more I think about it, the more I like putting it in
> /usr/include/sys/fooio.h. We have lots of other files there now. The
> down side to this approach is that it breaks up the driver sources
> that we've been trying to concentrate into sys/dev/foo/* (or
> introduces asymetry such that you can't just toss in a -I/sys and have
> the same tree that gets stuck under /usr/include).
The SHARED variable in src/include/Makefile makes this side of things
tricky too - we've got to be careful that we either keep our sources
together and maintain a resemblance of the hierarchy in /usr/include
or split our sources.
When I was working on Solaris I found it better to have the *io.h
files in sys (separate from the driver) as it made it very clear that
it was a public interface - the driver lived somewhere that just got
built into a module and wasn't seen by the outside world.
So I think I'd tend to vote (FWIW) for moving digiio.h (and other
similar things) out of sys/dev/<drivername>/ and into sys/sys/.
Comments ?
--
Brian <brian@Awfulhak.org> <brian@[uk.]FreeBSD.org>
<http://www.Awfulhak.org>; <brian@[uk.]OpenBSD.org>
Don't _EVER_ lose your sense of humour !
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