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Message #14782
Make ccache working
Hi all,
I'm trying to use ccache but I have two issues.
- the first one is the "installation" with the "export" command that
doesn"t work:
export CXX=ccache g++
> bash: export: « g++ » : identifiant non valable
>
Using
> export CXX='ccache g++'
works but it will result in cmake fail while checking cc compiler.
Finally, I "installed" ccache thanks to the first answer here:
https://askubuntu.com/questions/470545/how-do-i-set-up-ccache and it *kinda*
works.
- the second one, once the install is ok and cmake uses ccache, is that
I only get "unsupported compiler option" when I try *ccache -s* after a
full yade compilation. It results in a almost-empty cache:
*cmake:*
-- Check for working C compiler: /usr/lib/ccache/cc
> -- Check for working C compiler: /usr/lib/ccache/cc -- works
> -- Detecting C compiler ABI info
> -- Detecting C compiler ABI info - done
> -- Detecting C compile features
> -- Detecting C compile features - done
> -- Check for working CXX compiler: /usr/lib/ccache/c++
> -- Check for working CXX compiler: /usr/lib/ccache/c++ -- works
>
*ccache -s:*
> cache directory /home/francois/.ccache
> primary config /home/francois/.ccache/ccache.conf
> secondary config (readonly) /etc/ccache.conf
> stats zero time Wed Mar 27 16:25:15 2019
> cache hit (direct) 1
> cache hit (preprocessed) 0
> cache miss 19
> cache hit rate 5.00 %
> called for link 34
> called for preprocessing 12
> preprocessor error 1
> unsupported compiler option *195*
> no input file 2
> cleanups performed 0
> files in cache 40
> cache size 163.8 kB
>
Any idea ?
François
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