# Changes between Version 7 and Version 8 of InstallingMars

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Timestamp:
Nov 7, 2018, 9:56:02 AM (10 months ago)
Comment:

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 v7 }}} Before you run *cmake*, please make sure that your root environment has been properly initialized. That is usually the case if you can execute root easily from your commandline or if export | grep ROOTSYS gives a reasonable result. Otherwise, call thisroot.sh from your root installation. Assuming root is installed in /opt/root-6.14.04, this would be: Before you run *cmake*, please make sure that your root environment has been properly initialized. With recent ROOT versions it is often enough if root-config is in your path. That is usually the case if you can execute root easily from your commandline (or root-config itself) or if export | grep ROOTSYS gives a reasonable result. Otherwise, call thisroot.sh from your root installation. Assuming root is installed in /opt/root-6.14.04, this would be: {{{ [X] . /opt/root-6.14.04/bin/thisroot.sh }}} instead. instead. If you are not sure which compiler to use, just use the default and see if it works. (In almost all cases using a different compiler is not worth it) CMake will check for the availablility of all important packages. For Mars, this is mainly *root* and *libnova*. Although, we have managed to compile Mars with pre-installed binary packages, it is advised that you install root from scratch (see http://root.cern.ch). Libnova (if there is no package available -- don't forget the dev-package!) can be found here http://libnova.sourceforge.net/index.html and should be easy to compile (./configure && make.