__CINT__ and __MAKECINT__

ROOT
1

Hello,

There is something I do not understand about CINT and MAKECINT. Here is a simple macro I used for tests:

#include <iostream>

using std::cout;

/******************************************************************************/
void test__CINT__(void)
{

 #ifdef __CINT__
 cout<<"__CINT__\n";
 #else
 cout<<"NO __CINT__\n";
 #endif

 #ifdef __MAKECINT__
 cout<<"__MAKECINT__\n";
 #else
 cout<<"NO __MAKECINT__\n";
 #endif

}// end of function
/******************************************************************************/

And here is the output:

So it looks like MAKECINT is never defined and CINT is only defined in interpreter, which is not what is written in the User’s Guide.

Basically my question is which statement should I use to separate the following two cases:

  1. Code visible ONLY to root for compiled scripts.
  2. Code visible only when one compiles code using gcc (no ROOT involved).

How do I do that?

Thank you,
Siarhei.

2

MAKECINT is define only during the dictionary generation phase (aka rootcint). rootcint never looks into the implementation and hence MAKECINT only makes senses around declaration outside function implementation.

Philippe

3

Hi,
as you already found out, CINT is defined when interpreting code. MAKECINT is defined when running rootcint, i.e. when generating dictionaries.

You already found out: use CINT.

You can use #ifdef ROOT_VERSION

Cheers, Axel.