[Gate-users] installing gate from git

[Andrej Studen]

Hello!

I want to share the experience of installing Gate from git on a 
3.18.10-gentoo box. It basically installed out of the box with three 
interferences:

1.) I had to add -std=c++11 to CMAKE_CXX_FLAGS because that is how Geant 
and ROOT were compiled. New versions of root (ours is 6.02/05) are c++11 
based. In ccmake window toggle to advanced mode via [t] and add the 
flag, then re-configure [c] and then generate [g] before re-running make.

2.) in some files ifstream and ofstream are not prepended by std:: as 
they should be without a global using namespace std. I used replace, e.g.:

     #> replace ofstream std::ofstream -- 
source/physics/src/GateCrossSectionsTable.cc

  My picky gcc is:

     gcc version 4.9.2 (Gentoo 4.9.2 p1.3, pie-0.6.2)

  replace is a part of the mysql suite.

3.) Since I used c++11 standard of c++, some CLHEP files assumed I want 
Thread Local Storage (TLS) enabled, which caused a mismatch between the 
compiled version of CLHEP (TLS disabled) and Gate portion of CLHEP (TLS 
enabled). To resolve, I replaced

source/externals/clhep/include/CLHEP/Utility/thread_local.h

with a new thread_local.h where CLHEP_THREAD_LOCAL is defined to an 
empty string:

#define CLHEP_THREAD_LOCAL

Maybe this helps someone out there.

Andrej