[sigc] namespace problem

[Stéphane Conversy <stephane conversy enac fr>]

hello,

the following snippet does not compile on MacOSX, with g++4.x:

#include <sigc++/sigc++.h>
using namespace sigc;
signal<void> m;

toto.cc:4: error: expected constructor, destructor, or type conversion  
before ‘<’ token

I thought it was maybe because of <signal.h> or something so I put  
guards before including sigc++/sigc++.h:

#define _USER_SIGNAL_H
#define _BSD_MACHINE_SIGNAL_H_

but it gives the same result. Any tips ?

best regards,

Stéphane Conversy
Enseignant Chercheur en IHM - ENAC
http://lii-enac.fr/~conversy
enac: +33 5 62 17 40 19
dgac r&d: +33 5 62 25 96 48