I still think there's too many unknowns for us to be of much help. What happens when you run the following script (called try.pl): 
use strict;
use warnings;
use Inline CPP => <<'EOC';
#include "main.h"
   int CCC;
   char GlobalArr[13] = {'G','l','o','b','a','l',' ','a','r','r','a','
+y','\0'};
   MyClass  myGlobalInstance(GlobalArr) ;
   int add(int x, int y) 
   {
      char arr[7]={'i','n',' ','a','d','d','\0'};
      MyClass mc(arr);
      myGlobalInstance.wow();
      return x + y;
  }
EOC

print add(7, 5);

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For me, I get the following fatal errors: 
try_pl_13b2.xs:15:18: main.h: No such file or directory
try_pl_13b2.xs:18: error: `MyClass' does not name a type
try_pl_13b2.xs: In function `int add(int, int)':
try_pl_13b2.xs:22: error: `MyClass' was not declared in this scope
try_pl_13b2.xs:22: error: expected `;' before "mc"
try_pl_13b2.xs:23: error: `myGlobalInstance' was not declared in this 
+scope
dmake:  Error code 129, while making 'try_pl_13b2.o'

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But then I don't have 'main.h' so at least some of those failures are not surprising.

If I ever find out what 'main.h' contains (and where it is located), why/if those 'use lib' directives are necessary, and why/if those 'use Inline CPP => Config' parameters are necessary, then I might be able to offer better help. (And the same might hold for others, too. I'm actually fairly hopeless when it comes to C++, and I hope it remains that way ... so you might not get much help from me, in any event :-)

One thing I did notice which I think is almost certainly incorrect is: 
use Inline CPP => Config => INC => '-l/users/nirf/perlTrials/inlineExa
+mple';

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Did you mean: 
use Inline CPP => Config => INC => '-I/users/nirf/perlTrials/inlineExa
+mple';

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Cheers,
Rob

In reply to Re^6: inline in a perl module by syphilis
in thread inline in a perl module by nirf1

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