[MacPorts] #58629: Geant4 Source Script Clashes With Root

[MacPorts]

#58629: Geant4 Source Script Clashes With Root
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  Reporter:  StevenGreen1  |      Owner:  mojca
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  geant4.10.3   |
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Comment (by mojca):

 Can you please explain a bit more what precisely you did, which versions
 of Geant and ROOT you used, how you set them up, which shell you are using
 etc.?

 In general you should never need to modify paths for the sake of finding
 libraries, let alone fiddle with `DYLD_LIBRARY_PATH` (that's a linux
 thing; macOS has paths to libraries hardcoded in the binary, so you don't
 need to have libraries in PATH).
 A well-written CMake support should be all you need to get started with a
 working simulation.

 The only reason to ever need to source `geant4.sh` is to get the paths to
 data files set up correctly, else you cannot use the data (I still
 consider this to be a bug in Geant and I would probably send a patch to
 automatically fetch the data from the default location if I had slightly
 more time and if I was still using the software nowadays & had the
 motivation to do so).

 I now see that `DYLD_LIBRARY_PATH` is still modified in Geant4.10.3.;
 maybe I should simply patch 4.10.3 to remove those few lines, or remove
 Geant4.10.3 altogether. But unless you are using 4.10.3, I definitely need
 more info about how you could have ended up in the conflict.

-- 
Ticket URL: <https://trac.macports.org/ticket/58629#comment:5>
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