RE: Existing file does not exist?!?

[CARTER-HITCHIN, David, GBM]

Does your makefile change working directory somewhere? 

> -----Original Message-----
> From: address@hidden 
> [mailto:address@hidden
> g] On Behalf Of Hiebert, Darren (MS)
> Sent: 03 January 2007 15:02
> To: address@hidden
> Subject: RE: Existing file does not exist?!?
> 
> Directory caching doesn't look like it could be the problem, 
> as the file
> exists before make is run. This is weird.
> 
> -----Original Message-----
> From: Paul Smith [mailto:address@hidden 
> Sent: Tuesday, January 02, 2007 7:05 PM
> To: Dave Korn
> Cc: Hiebert, Darren (MS); address@hidden
> Subject: RE: Existing file does not exist?!?
> 
> On Tue, 2007-01-02 at 20:35 +0000, Dave Korn wrote:
> > On 02 January 2007 20:16, Hiebert, Darren (MS) wrote:
> 
> > > Under what circumstances can a file be reported by make as not 
> > > existing when it does exist?
> 
> > When it doesn't exist in the directory(ies) that make is 
> searching in 
> > for it.
> 
> Another possibility is you're running afoul of GNU make's directory
> caching.  To improve performance GNU make will cache the contents of
> directories the first time it needs to read them.  Thereafter make's
> internal cache is updated by make itself, as it updates targets.
> 
> However, if you have sneaky rules which create files that 
> aren't listed
> as targets in your makefile, then make has no way to know that they've
> been created and so its internal cache will not reflect the reality on
> the filesystem.
> 
> This can cause GNU make to think that files don't exist which actually
> have been created.
> 
> To know whether this is the case for sure we'd need to see an example
> that fails.
> 
> --
> --------------------------------------------------------------
> ----------
> -------
>  Paul D. Smith <address@hidden>          Find some GNU make tips at:
>  http://www.gnu.org                      http://make.paulandlesley.org
>  "Please remain calm...I may be mad, but I am a professional." --Mad
> Scientist
> 
> 
> _______________________________________________
> Help-make mailing list
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> http://lists.gnu.org/mailman/listinfo/help-make
> 

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