I found a solution that works in Windows and Unix, using simple preprocessor instructions.

http://stackoverflow.com/a/12397886/350106

In reply to Re^4: (OT) How can I do unless(caller) { main; } in C using GCC in Windows? by Anonymous Monk
in thread (OT) How can I do unless(caller) { main; } in C using GCC in Windows? by mcandre

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