[distcc] ccache distcc gcc = no cache hits, not cache misses, just multiple source files

[Martin Pool]

On 28 Jan 2003, Bob Tanner <tanner at real-time.com> wrote:
> I'm not sure if this is a distcc issue, ccache issue or user issue.
> 
> If I compile packageA with make CXX='ccache g++', then ccache -s, I get what I 
> expect lots of cache misses.

Hi Bob,

> I then recompile, ccache -s, and I get what I expect lots of cache hits.
> 
> I clear ccache's cache.

What command did you use to do this?  "ccache -C"?

What ccache version are you using?

> Now, if I compile packageA with make CXX='ccache distcc g++', then ccache -s, 
> I see lots of hits going to  multiple source files.
> 
> I recompile, again shows lots of hits going to multiple source files. It's 
> like ccache isn't called.

Sorry, I don't understand.  Surely getting lots of hits for repeated
compilation is an expected outcome?

What do you mean by "going to multiple source files"?

Here are my results: the first time I build distcc after a complete
flush and reset, I get all misses (currently 23 compiles, 2 links).
I make clean.  

The second time I get an additional 6 misses, 20 hits and 2 more
links.   

Actually I don't know why they're not all hitting, but it seems to be
basically working.

Note that the compiler output also apparently counts as a cached file.

-- 
Martin