My error, sorry. I should have said to put the line

#define CV __perl_CV

before this one

#include "perl.h"

otherwise it looks ok.

Update: some explanations added

What I intend to do, is this:

  1. for the processing of perl.h, XSUB.h and the included header files therein, substitute the offending identifier CV by __perl_CV. This is done by the preprocessor directive #define CV __perl_CV
  2. Afterwards redeclare the macro XSPROTO, which was using CV also. Unfortunately the above substitution affects only C code, but not subsequent preprocessor directives, so we need to adjust this macro definition.
    This is done by first deleting the old macro definition (#undef XSPROTO), and then by defining it again, but this time with __perl_CV instead of CV.
  3. Finally delete the substitution for identifier CV (#undef CV, so that the following code can use it exclusively.
  4. This in total should remove the conflict between the two different definitions of CV by using __perl_CV for the first one instead.

If you are curious, you can look at the difference of the preprocessed outputs with and without the modification (gcc -E -dDfile should produce them).

In reply to Re^3: SWIG and conflicting definitions by hexcoder
in thread SWIG and conflicting definitions by jdv

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