====== Compiler cache ======

Ccache is a compiler cache used to speed up recompilation by caching previous compilations. see the website of [[http://ccache.dev/|ccache]] for more informations.

To install Ccache, use the following steps:

1. Install package

<code>
sudo apt install -y ccache
</code>

2. Update symlinks

<code>
sudo /usr/sbin/update-ccache-symlinks
</code>

3. Prepend ccache into the PATH

<code>
echo 'export PATH="/usr/lib/ccache:$PATH"' | tee -a ~/.bashrc
</code>

4. Source bashrc to test the new PATH

<code>
source ~/.bashrc && echo $PATH
</code>

The message on terminal should look like this:

<code>
/usr/lib/ccache:/usr/local/cuda-5.5/bin/:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/game
</code>

5. Test g++/gcc. By typing

<code>
which g++ gcc
</code>

will return the message

<code>
''/usr/lib/ccache/g++
/usr/lib/ccache/gcc''
</code>