The library is build with OMP enabled. This will only affect memory-shared CPU systems by increased calculation speed. The Data Acquisition (DAC) feature, i.e. the triggering of light sources (mostly Nd-YAGG lasers) with a camara and the recording of the images has been disabled in the debian package for several reasons: - The upstream package gpivtrig containing the triggering module has not been debianized (yet). - The gpivtrig package uses the rtai package which has to be build in combination with a patched (linux) kernel and installed manually. In order to include this feature do the following: - install a (Linux) source package and rtai-source, unpack them, patch the kernel and build the kernel, together with the rtai and gpivtrig (from upstream source) modules. - download the source of this package (for example with apt-get source package-name). Remove the line --disable-dac in debian/rules, build and install this package.