Globals.h

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#ifndef PYOPAL_PYCORE_GLOBALS_H
#define PYOPAL_PYCORE_GLOBALS_H
#include "opal.h"
 
// Ippl and gmsg should only be built once, in globals.cc.o
//
// We declare them as extern for all other code to be consistent with usage in 
// C++ Opal; but we define them if we are including from Globals.cc so that the 
// extern is satisfied.
//
// Maybe this implements one gmsg per python module - which is wrong? So maybe
// some more linker/cmake dark arts required here? Do they have much global 
// state?
#ifndef PYOPAL_GLOBALS_C
    extern Ippl *ippl;
    extern Inform *gmsg;
#endif
 
#ifdef PYOPAL_GLOBALS_C
    Ippl *ippl = NULL;
    Inform *gmsg = NULL;
#endif
namespace PyOpal {
namespace Globals {
void Initialise();
}
}
 
#endif