[OE-core] [PATCH 1/4] base.bbclass: Remove invalid ccache related code

[Robert Yang]

On 12/10/18 6:29 PM, Richard Purdie wrote:
> On Sun, 2018-12-09 at 18:24 -0800, Robert Yang wrote:
>> The code is in setup_hosttools_dir(), it searches ccache in PATH in
>> reverse order, I can't figure out what it is used for, maybe it is
>> aimed to use host's ccache rather than recipe-sysroot-
>> native/usr/bin/ccache, but the later one isn't in original PATH, so
>> remove the code.
>>
>> Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
>> ---
>>   meta/classes/base.bbclass | 2 --
>>   1 file changed, 2 deletions(-)
> 
> We should document it and I think its still needed.
> 
> Some distros have a "gcc" which automatically wraps ccache behind the
> scenes. This code lets us find the real gcc and bypass ccache.

Ah, thanks for the explanations, I got it now. I think that we don't need the
code any more since we don't use host's ccache, and I have removed ccache from
HOSTTOOLS.

I will update commit message and send a V2.

// Robert

> 
> There would be oe-selftest failures on such a distro if we didn't do
> that.
> 
> Cheers,
> 
> Richard
> 
>