I tested it to this extent in the Xen DDK:
blp@hardrock:~/xenddk-5.6.0$ sudo chroot .
[root@hardrock /]# cd
[root@hardrock ~]# cat > foo.c
#include <linux/types.h>
#include <sys/types.h>
[root@hardrock ~]# gcc foo.c
In file included from foo.c:2:
/usr/include/sys/types.h:62: error: conflicting types for 'dev_t'
/usr/include/linux/types.h:13: error: previous declaration of 'dev_t' was
here
/usr/include/sys/types.h:67: error: conflicting types for 'gid_t'
/usr/include/linux/types.h:27: error: previous declaration of 'gid_t' was
here
/usr/include/sys/types.h:72: error: conflicting types for 'mode_t'
/usr/include/linux/types.h:15: error: previous declaration of 'mode_t' was
here
/usr/include/sys/types.h:77: error: conflicting types for 'nlink_t'
/usr/include/linux/types.h:16: error: previous declaration of 'nlink_t' was
here
/usr/include/sys/types.h:82: error: conflicting types for 'uid_t'
/usr/include/linux/types.h:26: error: previous declaration of 'uid_t' was
here
In file included from /usr/include/sys/types.h:133,
from foo.c:2:
/usr/include/time.h:105: error: conflicting types for 'timer_t'
/usr/include/linux/types.h:22: error: previous declaration of 'timer_t' was
here
In file included from /usr/include/sys/types.h:220,
from foo.c:2:
/usr/include/sys/select.h:78: error: conflicting types for 'fd_set'
/usr/include/linux/types.h:12: error: previous declaration of 'fd_set' was
here
In file included from foo.c:2:
/usr/include/sys/types.h:235: error: conflicting types for 'blkcnt_t'
/usr/include/linux/types.h:114: error: previous declaration of 'blkcnt_t'
was here
[root@hardrock ~]# cat > foo.c
#include <sys/types.h>
#include <linux/types.h>
[root@hardrock ~]# gcc foo.c
/usr/lib/gcc/i386-redhat-linux/4.1.2/../../../crt1.o: In function `_start':
(.text+0x18): undefined reference to `main'
collect2: ld returned 1 exit status
[root@hardrock ~]# exit
On Thu, Oct 13, 2011 at 02:42:36PM -0700, Ethan Jackson wrote:
> This seems fine to me if assuming it fixes the errors. Jesse knows
> more about this sort of thing than I do so perhaps he should take a
> look.
>
> Ethan
>
> On Thu, Oct 13, 2011 at 14:38, Ben Pfaff <b...@nicira.com> wrote:
> > Avoids errors like the following:
> >
> > In file included from ./include/openvswitch/types.h:21,
> > ? ? ? ? ? ? ? ? from ./lib/vconn.h:21,
> > ? ? ? ? ? ? ? ? from tests/test-vconn.c:18:
> > /usr/include/sys/types.h:52: error: conflicting types for 'ino_t'
> > /usr/include/linux/types.h:14: error: previous declaration of 'ino_t' was
> > here
> > /usr/include/sys/types.h:62: error: conflicting types for 'dev_t'
> > /usr/include/linux/types.h:13: error: previous declaration of 'dev_t' was
> > here
> > /usr/include/sys/types.h:67: error: conflicting types for 'gid_t'
> > /usr/include/linux/types.h:27: error: previous declaration of 'gid_t' was
> > here
> > /usr/include/sys/types.h:72: error: conflicting types for 'mode_t'
> > /usr/include/linux/types.h:15: error: previous declaration of 'mode_t' was
> > here
> > /usr/include/sys/types.h:77: error: conflicting types for 'nlink_t'
> > /usr/include/linux/types.h:16: error: previous declaration of 'nlink_t' was
> > here
> > /usr/include/sys/types.h:82: error: conflicting types for 'uid_t'
> > /usr/include/linux/types.h:26: error: previous declaration of 'uid_t' was
> > here
> > /usr/include/sys/types.h:90: error: conflicting types for 'off_t'
> > /usr/include/linux/types.h:17: error: previous declaration of 'off_t' was
> > here
> > ---
> > ?include/linux/types.h | ? ?8 +++++++-
> > ?1 files changed, 7 insertions(+), 1 deletions(-)
> >
> > diff --git a/include/linux/types.h b/include/linux/types.h
> > index 4579add..13112e8 100644
> > --- a/include/linux/types.h
> > +++ b/include/linux/types.h
> > @@ -23,7 +23,13 @@
> > ?* <linux/types.h> to allow <linux/openvswitch.h> to work, that is, it
> > defines
> > ?* the __u<N> and __be<N> types. */
> >
> > -#if __KERNEL__ || HAVE_LINUX_TYPES_H
> > +#ifdef __KERNEL__
> > +#include_next <linux/types.h>
> > +#elif defined(HAVE_LINUX_TYPES_H)
> > +/* With some combinations of kernel and userspace headers, including both
> > + * <sys/types.h> and <linux/types.h> only works if you do so in that
> > order, so
> > + * force it. ?*/
> > +#include <sys/types.h>
> > ?#include_next <linux/types.h>
> > ?#else ?/* no <linux/types.h> */
> > ?#include <stdint.h>
> > --
> > 1.7.4.4
> >
> > _______________________________________________
> > dev mailing list
> > dev@openvswitch.org
> > http://openvswitch.org/mailman/listinfo/dev
> >
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