to activate ccache

• install it in the chroot
• set it up in the script (after a potential wiki:icecc setup)
  • export PATH=/usr/lib/ccache:$PATH #use the ccache compilers
  • export CCACHE_PREFIX=icecc

thats it

the cache set per node and is located in the jenkins home directory (/var/lib/jenkins/.ccache)

in order to set the ccache directory:

• create a ccache folder in the jenkins folder (pernode):
  • cd /data/jenkins/
  • mkdir ccache
  • chown jenkins:jenkins ccache
  • or: sudo mkdir -p /data/jenkins/ccache && sudo chown jenkins:jenkins /data/jenkins/ccache

export CCACHE_READONLY=true