Re: [gentoo-user] ccache: unsupported compiler option

[Alexander Kirillov]

> I'm trying to find out why ccache won't cache anything.  Building and
> maintaining for three months an entire system got me all of 5 cache
> hits.  What can I do to encourace more cache usage?  One of the methods
> I'm investigating is to determine and eliminate CFLAGS arguments that
> may cause 'unsupported compiler option' to be incremented.  Is there
> anything else I can try?
>
> # ccache -s
> cache directory                     /var/tmp/ccache
> cache hit                              5
> cache miss                           153
> called for link                    14836
> multiple source files                 87
> compile failed                         2
> preprocessor error                  1732
> bad compiler arguments                 1
> not a C/C++ file                    4774
> autoconf compile/link              28079
> unsupported compiler option         2569
> no input file                       8965
> files in cache                       306
> cache size                           4.3 Mbytes
> max cache size                       2.5 Gbytes
>
> # grep CFLAGS /etc/make.conf
> CFLAGS="-march=athlon64 -mtune=athlon64 -m64 -O3 -fmessage-length=0 -pipe"
> CXXFLAGS="${CFLAGS}"

Have you tried http://gentoo-wiki.com/Ccache?


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