https://bugs.freedesktop.org/show_bug.cgi?id=65570

          Priority: medium
            Bug ID: 65570
          Assignee: [email protected]
           Summary: ccache almost always cache-misses on LibreOffice
                    currently
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: [email protected]
          Hardware: Other
            Status: UNCONFIRMED
           Version: 4.1.0.0.beta2
         Component: Libreoffice
           Product: LibreOffice

Building LibreOffice 4.1.0.0beta2 with a ccache -z before, I see:
ccache -s
cache directory                     /root/.ccache
cache hit (direct)                   165
cache hit (preprocessed)              23
cache miss                          9139
called for link                      327
called for preprocessing              98
multiple source files                  2
compile failed                        14
preprocessor error                     7
bad compiler arguments                25
unsupported source language            1
autoconf compile/link                184
unsupported compiler option         1176
no input file                         79
files in cache                     11433
cache size                           9.0 Gbytes
max cache size                      10.0 Gbytes

afterwards, although the cache was populated before. This EasyHack is to run a
ccache build with CCACHE_LOGFILE set and to analyse why we cant use the cache
(do we have e.g. timestamps in header? etc.)

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