diskimage-builder/elements/base/environment.d/10-ccache.bash

# Put ccache in path for known compilers
if ! [[ "$PATH" =~ "/usr/lib/ccache" ]] ; then
    export PATH=/usr/lib/ccache:$PATH
fi
export CCACHE_DIR=/tmp/ccache
Use ccache to cache all compiles between builds. Many python extensions are built from source each time an image is built. Repeating these is wasteful, so ccache is employed to eliminate that waste. A cache dir outside the chroot is used to speed up subsequent image builds. Change-Id: Ib73563ddbe5f3be7454bfc54ab91cedb559a1304 2013-07-09 22:03:58 +00:00			`# Put ccache in path for known compilers`
			`if ! [[ "$PATH" =~ "/usr/lib/ccache" ]] ; then`
			`export PATH=/usr/lib/ccache:$PATH`
			`fi`
			`export CCACHE_DIR=/tmp/ccache`