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SubjectRe: Linux 2.6.15-rc6
On Mon, Dec 19, 2005 at 02:30:58AM +0100, Diego Calleja wrote:
> El Sun, 18 Dec 2005 16:47:33 -0800 (PST),
> Linus Torvalds <torvalds@osdl.org> escribió:
>
> > Matt Helsley:
> > Add getnstimestamp function
> > Add timestamp field to process events
>
>
> This last change (5650b736ad328f7f3e4120e8790940289b8ac144) "broke" a
> small process event connector test program (the one matt posted here
> http://lkml.org/lkml/2005/9/28/347, slighty modified) due to a headers
> conflict. I think it's due to my setup, but...
>
> --- a/include/linux/cn_proc.h
> +++ b/include/linux/cn_proc.h
> @@ -26,6 +26,7 @@
> #define CN_PROC_H
> #include <linux/types.h>
> +#include <linux/time.h>
> #include <linux/connector.h>
>
>
>
> and the program:
> 31: #include <stdio.h>
> 32: #include <stdlib.h>
> 33: #include <string.h>
> 34: #include <unistd.h>
> 35:
> 36: #include <sys/socket.h>
> 37: #include <sys/types.h>
> 38:
> 39: #include <linux/connector.h>
> 40: #include <linux/netlink.h>
> 41: #include <linux/cn_proc.h>
>
>
>
> This gives me
>
> diego@estel 2J2 ~/kernel # LC_ALL='C' make
> gcc -I 2.6/include test_cn_proc.c -o test_cn_proc
> In file included from 2.6/include/linux/cn_proc.h:29,
> from test_cn_proc.c:41:
> 2.6/include/linux/time.h:12: error: redefinition of 'struct timespec'
> 2.6/include/linux/time.h:18: error: redefinition of 'struct timeval'
> In file included from 2.6/include/linux/cn_proc.h:29,
> from test_cn_proc.c:41:
> 2.6/include/linux/time.h:121:1: warning: "FD_SET" redefined
> In file included from /usr/include/sys/types.h:216,
> from /usr/include/stdlib.h:433,
> from test_cn_proc.c:32:
> /usr/include/sys/select.h:93:1: warning: this is the location of the previous definitio
>
> (My "debian testing" box supplies an old and apparently incompatible
> version of connector.h so I had to point gcc to kernel's headers directly)

As a dirty trick, you should be able to avoid this by adding the
following line just before #include <linux/cn_proc.h> :

#define _LINUX_TIME_H

So that the preprocessor will think it has already included <linux/time.h>
definitions and will not load them again. Of course, if they are needed,
you're lost.

Willy

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