A simple tool to mount an overlay of a squashfs image and a writeable directory
Mounting squashfs image image.sqfs with an upper directory /upper and a work directory /work to /mount
squashmnt /mount image.sqfs /upper /work
Mounting squashfs image imsage.sqfs to /mount with upper and work directory being created in /tmp
squashmnt -t /mount image.sqfs
Unmounting an image mounted at /mount
squashmnt -u /mount
mkdir BUILD
cd BUILD
ccmake ../
make && make install