* is kernel compilation supposed to change header file timestamps?
@ 2002-08-22 16:41 Chris Friesen
2002-08-22 17:07 ` george anzinger
2002-08-22 17:31 ` Sam Ravnborg
0 siblings, 2 replies; 3+ messages in thread
From: Chris Friesen @ 2002-08-22 16:41 UTC (permalink / raw)
To: linux-kernel
I noticed the other day that on a kernel compile, the timestamps of some files are changed. The
funny thing is that all the changed ones are header files, but not all header files are modified.
Is this expected behaviour?
Chris
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: is kernel compilation supposed to change header file timestamps?
2002-08-22 16:41 is kernel compilation supposed to change header file timestamps? Chris Friesen
@ 2002-08-22 17:07 ` george anzinger
2002-08-22 17:31 ` Sam Ravnborg
1 sibling, 0 replies; 3+ messages in thread
From: george anzinger @ 2002-08-22 17:07 UTC (permalink / raw)
To: Chris Friesen; +Cc: linux-kernel
Chris Friesen wrote:
>
> I noticed the other day that on a kernel compile, the timestamps of some files are changed. The
> funny thing is that all the changed ones are header files, but not all header files are modified.
>
> Is this expected behaviour?
>
Yes, it has to do with how dependencies are propagated from
header file to header file (i.e. where a header file
includes another). Or, at least, I think this is what is
going on.
--
George Anzinger george@mvista.com
High-res-timers:
http://sourceforge.net/projects/high-res-timers/
Preemption patch:
http://www.kernel.org/pub/linux/kernel/people/rml
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: is kernel compilation supposed to change header file timestamps?
2002-08-22 16:41 is kernel compilation supposed to change header file timestamps? Chris Friesen
2002-08-22 17:07 ` george anzinger
@ 2002-08-22 17:31 ` Sam Ravnborg
1 sibling, 0 replies; 3+ messages in thread
From: Sam Ravnborg @ 2002-08-22 17:31 UTC (permalink / raw)
To: Chris Friesen; +Cc: linux-kernel
On Thu, Aug 22, 2002 at 12:41:19PM -0400, Chris Friesen wrote:
>
> I noticed the other day that on a kernel compile, the timestamps of some files are changed. The
> funny thing is that all the changed ones are header files, but not all header files are modified.
>
> Is this expected behaviour?
I assume you are compiling a 2.4 kernel, in which case this is expected
behaviour.
For the 2.5 kernel kbuild has been changed such that
header files are no longer 'touched' during the compile process.
Sam
^ permalink raw reply [flat|nested] 3+ messages in thread
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2002-08-22 16:41 is kernel compilation supposed to change header file timestamps? Chris Friesen
2002-08-22 17:07 ` george anzinger
2002-08-22 17:31 ` Sam Ravnborg
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