module declaration and compilation

This is a multi-part message in MIME format.

------_=_NextPart_001_01C2A5BB.D5AF3208
Content-Type: text/plain;
charset="us-ascii"
Content-Transfer-Encoding: quoted-printable

HI, I am not sure if this is the right place, but I have a question
about the module declaration and the compilation.
The proxy module and the mod_info module are both the only modules that
have a declartion with "extern" :
=20
extern module MODULE_VAR_EXPORT proxy_module;
=20
All others module I have seen have a module declaration without the
"extern", like=20
module MODULE_VAR_EXPORT example_module;
=20
Could someone explain the difference about these two declarations for
compilation and programs running.
=20
Thanks
=20
=20
Gael Seroul

------_=_NextPart_001_01C2A5BB.D5AF3208
Content-Type: text/html;
charset="us-ascii"
Content-Transfer-Encoding: quoted-printable



charset=3Dus-ascii">