gistfile1.txt

so in process its semantically different behind the scenes
from how windows does it but its syntactically equivalent
as you can see from the email. all you have to do is set
up the macros correctly, its great.
Check out this link
http://gcc.gnu.org/onlinedocs/gcc-4.2.1/gcc/Code-Gen-Options.html#Code-Gen-Options
and follow the two links it provides they are good resources.

your an oam

#ifndef _XACT_EXPORT_H_
#define _XACT_EXPORT_H_

#ifdef WIN32
   #ifdef XACT_DLLEXPORT
       #define XACT_EXPORT __declspec(dllexport)
   #else
       #ifdef XACT_DLLIMPORT
           #define XACT_EXPORT __declspec(dllimport)
       #endif
   #endif
#else
   #ifdef XACT_DLLEXPORT
       #define XACT_EXPORT __attribute__ ((visibility("default")))
       #define XACT_LOCAL __attribute__ ((visibility("hidden")))
   #else
       #define XACT_EXPORT
       #define XACT_LOCAL
   #endif
#endif

#endif // _XACT_EXPORT_H_