I succeeded in compiling ROOT6 with cmake the other week from a clone of the trunk.
cd $SOURCE_DIR/root git clone http://root.cern.ch/git/root.git trunk mkdir v6-trunk cd trunk mkdir CMAKEworkdir cd CMAKEworkdir cmake .. -DCMAKE_INSTALL_PREFIX=$SOURCE_DIR/root/v6-trunk -DCMAKE_BUILD_TYPE=Debug make -j 4 make install source $SOURCE_DIR/root/v6-trunk/bin/thisroot.csh
and now I have a working install of ROOT6.
Now I would like to recompile the updated trunk after doing
cd $SOURCE_DIR/root/trunk git pull
My question is: do I have to redo all the cmake steps above (i.e. delete the cmake working directory and
create a new one), or I do I just do
cd CMAKEworkdir make -j 4 make install