Fix ccache cache size detection

I have ccache 4.8.1 and it reports:

(/home/khaled/.config/ccache/ccache.conf) max_size = 30.0 GB

With a space between the number and the unit and the configure check
with then see a unit-less 30 and will warn:

ccache's cache size is less than 1GB using it is counter-productive: Disabling auto-ccache detection

Instead of relying on the human readable output, use --print-stats
which prints machine-readable output and is available since 3.7 (thanks
to Cloph for the suggestion).

Change-Id: I69f994a07cfbf08b66a2010f9c99401881d4acf3
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/152382
Reviewed-by: Christian Lohmaier <lohmaier+LibreOffice@googlemail.com>
Tested-by: Jenkins

0 files changed, 0 insertions, 0 deletions