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Date: Wed, 18 Jun 2008 20:23:52 +0300
From: Alex Kozlov <spam@rm-rf.kiev.ua>
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Subject: Re: Standardize NO_CCACHE flag and ccache definitions
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On Wed, Jun 18, 2008 at 06:44:36PM +0200, Alex Dupre wrote:
> Alex Kozlov wrote:
> > Problem in make buildworld case is not compiler name.
> hash_file() doesn't hash the file name :-)
Yes, sorry. s/name/identity/. In other world this check to make
sure that obj was created the same compiler.

> You are lucky that CCACHE_HASH_COMPILER is checked before
> CCACHE_NOHASH_SIZE_MTIME.
This is not luck. To think more about this, CCACHE_HASH_COMPILER
and CCACHE_NOHASH_SIZE_MTIME is two method for the same.
hash size and mtime is lightweight and CCACHE_HASH_COMPILER
is more heavy.
But in case of buildworld CCACHE_HASH_COMPILER is still not necessary,
CCACHE_NOHASH_SIZE_MTIME is enough.


--
Adios