sPHENIX discussion of software

[pinkenburg <pinkenburg AT bnl.gov>]

Hi folks,

you've probably heard by now that we want to give ACTS a shot for our 
tracking. ACTS requires c++17 which needs a newer version of gcc (6 
would have worked but I picked 8.3 which is also supported). I spend 
some time to port our 3rd party libraries and code over to this version. 
If you source the setup script from the new area:

source 
/cvmfs/sphenix.sdcc.bnl.gov/gcc-8.3/opt/sphenix/core/bin/sphenix_setup.csh 
-n

you'll get gcc 8.3 as compiler with -std=c++17 enabled by default. We 
have a nightly rebuild (just the new build) using the newest Geant4 
version 10.05.p01 and root 6.16.

This is mainly for ACTS development but if you want to play with c++17 
and with a more modern compiler you can use this. If ACTS turns out to 
be viable we will move to this. In terms of our code there are no 
adjustments needed but the 3rd party packages which use cmake were a 
real handful.

Chris

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Christopher H. Pinkenburg       ;    pinkenburg AT bnl.gov
                                ;    http://www.phenix.bnl.gov/~pinkenbu

Brookhaven National Laboratory  ;    phone: (631) 344-5692
Physics Department Bldg 510 C   ;    fax:   (631) 344-3253
Upton, NY 11973-5000

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