Hints for using ccache with mothur build
-----------------------------------------

Mothur compiles a lot of cpp files and it takes ages.
To make it swift, consider using ccache as follows:

In ~/.pbuilderrc:

export CCACHE_DIR="/var/cache/pbuilder/ccache"
export PATH="/usr/lib/ccache:${PATH}"
export MPICXX="ccache mpic++"
EXTRAPACKAGES="ccache"
BINDMOUNTS="${CCACHE_DIR}"

This is taken from
https://wiki.debian.org/git-pbuilder#Using_ccache,
but note MPICXX which is hooking into the MPI compiler,
which is not replaced by ccache.

 -- Tomasz Buchert <toma@buchert.pl>, Fri,  4 Sep 2015 10:28:58 +0200
