[U-Boot-Users] [PATCH] Use `ln -sf` rather than `rm -f && ln -s`

[Wolfgang Denk]

In message <200801280638.59012.vapier at gentoo.org> you wrote:
> odd ... git-send-email ate the explanatory text ...
> ---
> The -f option to `ln` should give the same behavior as the -f option to the
> `rm` command.  It is better to do this in one shot so as to avoid race
> conditions when building in parallel.  I build on a quad G5 and without this
> change, it isn't uncommon for the build to fail when using -j8 due to this
> small window where the files don't actually exist.

Note that "ln -s -f" will come down to two separate system calls as
well:

	...
	unlink();
	symlink();
	...

So you don't avoid the race condition; you're just making it a little
less likely at the cost of reduced portability.


Best regards,

Wolfgang Denk

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