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https://issues.apache.org/jira/browse/KUDU-1961?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adar Dembo reassigned KUDU-1961:
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Assignee: Adar Dembo
> devtoolset-3 defeats ccache
> ---------------------------
>
> Key: KUDU-1961
> URL: https://issues.apache.org/jira/browse/KUDU-1961
> Project: Kudu
> Issue Type: Improvement
> Components: build
> Affects Versions: 1.4.0
> Reporter: Adar Dembo
> Assignee: Adar Dembo
>
> When devtoolset-3 is used (via enable_devtoolset.sh on el6), it's quite
> likely that ccache will go unused for the build. Certainly for
> build-thirdparty.sh, and likely for the main Kudu build too (unless you go
> out of your way to set CC/CXX=ccache when invoking cmake).
> We should be able to fix this in enable_devtoolset.sh, at least in the common
> case where symlinks to ccache named after the compiler are on the PATH. We
> could ensure that, following the call to 'scl enable devtoolset-3 <cmd>',
> ccache symlinks are placed at the head of the PATH, before
> /opt/rh/devtoolset-3/, and only then is <cmd> actually invoked. This should
> cause ccache to be used, and it'll chain to the devtoolset-3 compiler because
> /opt/rh/devtoolset-3/ is ahead of /usr/bin on the PATH. We may need an
> intermediate script to do this.
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