library RootTuple

Starting with release 2018, the code is able to produce particle vector output as a ROOT file. Here we rely on the library ​RootTuple, which is a lightweight Fortran interface to some existing ​ROOT installation.

Unfortunately, the default installation process of 'RootTuple' produces only a 'shared' library (*.so) , which is not usable with GiBUU; here we need a 'static' library (*.a). Therefore some rework is needed and the total installation process reads:

1) Download the source from ​https://roottuple.hepforge.org/

2) Modify the file RootTuple-master/src/CMakeLists.txt by changing one line

add_library (RootTuple SHARED ${RootTuple_SOURCES})

to

add_library (RootTuple STATIC ${RootTuple_SOURCES})

3) follow the usual given build procedure of 'RootTuple'

...here internals to your ROOT installation may enter...

4) make the library accessible for GiBUU, e.g.:

cp RootTuple-master/build/src/libRootTuple.a <your/path/to/GiBUU>/objects/LIB/lib/libRootTuple.100.a

(Here the '...100...' indicates the version number, which is fixed to be 1.0.0; please do not change!)

After this, a new rebuild of GiBUU should detect the library and automatically enable 'ROOT' as a possible output format.