[Libreoffice] ccache support

[Norbert Thiebaud]

On Fri, Sep 9, 2011 at 1:22 PM, Lubos Lunak <l.lunak at suse.cz> wrote:
>  Since there (AFAIR) haven't been any actual data presented in the discussion

here are some number for my linux buildbot.

no ccache, clean full build

real    56m2.046s
user    187m2.925s
sys     20m45.332s

ccache, empty cache, clean full build
real    59m8.259s
user    193m59.283s
sys     23m41.392s

cache directory                     /home/n_th/.ccache
cache hit                             78
cache miss                         11983
called for link                      480
multiple source files                  3
compile failed                       845
preprocessor error                    28
not a C/C++ file                     103
autoconf compile/link                616
unsupported compiler option          602
no input file                       1247
files in cache                     23966
cache size                         629.2 Mbytes
max cache size                       8.0 Gbytes

ccache fully hot, clean full build


real    14m9.809s
user    35m0.468s
sys     10m8.120s

cache directory                     /home/n_th/.ccache
cache hit                          11915
cache miss                         12186
called for link                      959
multiple source files                  6
compile failed                      1687
preprocessor error                    56
not a C/C++ file                     206
autoconf compile/link               1196
unsupported compiler option         1203
no input file                       2492
files in cache                     24372
cache size                         630.0 Mbytes
max cache size                       8.0 Gbytes




Note: when icecream is enable configure.in does _not_ auto-enable
ccache (iow if you want ccache _with_ icecream you need to actively
say --enable-ccahe or set up up transparently on your environment