Hiding ROOT::Cintex::Cintex::Enable(); from ROOT6 compilation in a backwards compatible way

Newbie
1

I’ve inherited a boatload of ROOT5 code I’d like to make run under both ROOT5 and ROOT6.

It is full of
ROOT::Cintex::Cintex::Enable();
and putting macros around that line is getting really old after about 30 times.

Any simple suggestions for overriding that code which crops up everywhere.

2

Hi,
how about doing a find/replace of ROOT::Cintex::Cintex::Enable() in all files with

#include <enablecintex.h>
EnableCintex();

and then implement EnableCintex only once, and putting an #ifdef inside the body that makes it no-op for ROOT6?

Or equivalently, implementing

#if IS_ROOT_6
namespace ROOT {
namespace Cintex {
namespace Cintex {
  void Enable() {}
}
}
}
#endif

Cheers,
Enrico

3

Thanks that seems to work.

Is IS_ROOT_6 a variable I can expect to exist or do I need to set it myself someplace.

but aside from that question I think I can now do much less damage to existing code.

4

Try to “#include” anything from ROOT and then (if ROOT 5 will misbehave, replace ROOT_VERSION(6,00,00) with 393216):

#if ROOT_VERSION_CODE >= ROOT_VERSION(6,00,00)
// ... ROOT 6.00/00 and newer
#else /* ROOT_VERSION_CODE >= ROOT_VERSION(6,00,00) */
// ... ROOT 5 (and older)
#endif /* ROOT_VERSION_CODE >= ROOT_VERSION(6,00,00) */

See also:

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