> With gcc I obtain the error
As you should: RH-7.3 used g++-2.95 (IIRC), RHEL-4 uses g++ 3.x
which is much more standards compliant.
> ../platform/hashmap.h:9: error: `::hash_map' has not been declared
> ../platform/hashmap.h:10: error: `::hash' has not been declared
Your code is broken WRT both gcc-2.95 (which defined std::hash_map,
not ::hash_map), and gcc-3.x (which defines __gcc_cxx::hash_map).
See pg. 13 of this document:
> Somebody said me that in Red Hat Enterprise 4 there are some
> differences in the library management.
There are, but they have nothing to do with your problem.
In order to understand recursion you must first understand recursion.
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