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namespace problem
by Stéphane Conversy-3
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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 _______________________________________________ libsigc-list mailing list libsigc-list@... http://mail.gnome.org/mailman/listinfo/libsigc-list |
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Re: namespace problem
by Jonathon Jongsma-3
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Stéphane Conversy wrote:
> 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 > > > > _______________________________________________ > libsigc-list mailing list > libsigc-list@... > http://mail.gnome.org/mailman/listinfo/libsigc-list Does it work if you specify the fully-qualified name (e.g. sigc::signal<>)? If so, just use that. That's what namespaces are for, after all. Just drop the 'using namespace ...' stuff. -- jonner _______________________________________________ libsigc-list mailing list libsigc-list@... http://mail.gnome.org/mailman/listinfo/libsigc-list |
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Re: namespace problem
by Stéphane Conversy-3
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yes it works with the fully-qualified name, though I'm not satisfied
with the "drop using namspace" solution: I tried to compile a program developed on a linux system. I'm not the owner of the sources, and the maintainer said that he "has not interest in supporting propriatory systems", which I understand, but makes me unable to apply your proposition for the sake of other people (it works on my system of course). thanks, s. Le 4 sept. 08 à 16:31, Jonathon Jongsma a écrit : > Stéphane Conversy wrote: >> 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 >> _______________________________________________ >> libsigc-list mailing list >> libsigc-list@... >> http://mail.gnome.org/mailman/listinfo/libsigc-list > > Does it work if you specify the fully-qualified name (e.g. > sigc::signal<>)? If so, just use that. That's what namespaces are > for, after all. Just drop the 'using namespace ...' stuff. > > -- > jonner Stéphane Conversy Enseignant Chercheur en IHM - ENAC http://lii-enac.fr/~conversy +33 5 62 17 40 19 _______________________________________________ libsigc-list mailing list libsigc-list@... http://mail.gnome.org/mailman/listinfo/libsigc-list |
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Re: namespace problem
by Ulrich Eckhardt
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On Thursday 28 August 2008, Stéphane Conversy wrote:
> 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 Two things come to mind that might cause problems here: 1. signal is a macro 2. signal is another global symbol Two approaches I use normally are these: 1. #define signal 42 <yourcode> This will give a warning at the place where the macro is redefined. 2. int signal; <yourcode> This will give an error at the place where signal is now redefined as a global symbol. Uli -- Sator Laser GmbH Geschäftsführer: Thorsten Föcking, Amtsgericht Hamburg HR B62 932 ************************************************************************************** Visit our website at <http://www.satorlaser.de/> ************************************************************************************** Diese E-Mail einschließlich sämtlicher Anhänge ist nur für den Adressaten bestimmt und kann vertrauliche Informationen enthalten. Bitte benachrichtigen Sie den Absender umgehend, falls Sie nicht der beabsichtigte Empfänger sein sollten. Die E-Mail ist in diesem Fall zu löschen und darf weder gelesen, weitergeleitet, veröffentlicht oder anderweitig benutzt werden. E-Mails können durch Dritte gelesen werden und Viren sowie nichtautorisierte Änderungen enthalten. Sator Laser GmbH ist für diese Folgen nicht verantwortlich. ************************************************************************************** _______________________________________________ libsigc-list mailing list libsigc-list@... http://mail.gnome.org/mailman/listinfo/libsigc-list |
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