Dotaz: Problem pri includovani libwnck ve svem programu

[Martin]

Zdravim, snazim se napsat jednoduchy program pouzivajici libwnck. Normalne jsem si knihovnu stahl, svatou trojici nainstaloval, ale kdyz ji includuju do uplne prazdneho programu (int main(){}), gcc4.0 mi to stejne odmitne zkompilovat a vyhodi furu chyb typu

/usr/local/include/libwnck-1.0/libwnck/screen.h:123: error: expected constructor, destructor, or type conversion before ‘*’ token
/usr/local/include/libwnck-1.0/libwnck/screen.h:124: error: expected constructor, destructor, or type conversion before ‘*’ token
/usr/local/include/libwnck-1.0/libwnck/screen.h:129: error: ‘gboolean’ does not name a type
/usr/local/include/libwnck-1.0/libwnck/screen.h:131: error: ‘gulong’ does not name a type
/usr/local/include/libwnck-1.0/libwnck/screen.h:134: error: ‘gboolean’ does not name a type
/usr/local/include/libwnck-1.0/libwnck/screen.h:136: error: ‘gboolean’ has not been declared
/usr/local/include/libwnck-1.0/libwnck/screen.h:148: error: ‘G_END_DECLS’ does not name a type
/usr/local/include/libwnck-1.0/libwnck/application.h:43: error: ‘GObject’ does not name a type
/usr/local/include/libwnck-1.0/libwnck/application.h:50: error: ‘GObjectClass’ does not name a type
/usr/local/include/libwnck-1.0/libwnck/application.h:53: error: ‘WnckApplication’ has not been declared
/usr/local/include/libwnck-1.0/libwnck/application.h:56: error: ‘WnckApplication’ has not been declared
/usr/local/include/libwnck-1.0/libwnck/application.h:59: error: ‘GType’ does not name a type
/usr/local/include/libwnck-1.0/libwnck/application.h:61: error: expected constructor, destructor, or type conversion before ‘*’ token
/usr/local/include/libwnck-1.0/libwnck/application.h:63: error: ‘gulong’ does not name a type
/usr/local/include/libwnck-1.0/libwnck/application.h:65: error: expected constructor, destructor, or type conversion before ‘*’ token
/usr/local/include/libwnck-1.0/libwnck/application.h:66: error: ‘WnckApplication’ was not declared in this scope
/usr/local/include/libwnck-1.0/libwnck/application.h:66: error: ‘app’ was not declared in this scope
/usr/local/include/libwnck-1.0/libwnck/application.h:73: error: ‘WnckApplication’ was not declared in this scope

(ve skutecnosti je jich asi ctyrikrat vic)

Zkousel jsem nainstalovat hned nekolik verzi libwnck (predchozi jsem samozrejme odinstalovaval), ale nijak to nepomohlo. Taky jsem zkousel gcc3.2, to taky nepomohlo. BTW, ten includovaci adresar se sice jmenuje vzdycky libwnck-1.0, ale verze co jsem zkousel byly 2.6, 2.10 a 2.13.

Odpovědi

[Fuky]

Myslím, že Ti chybí knihovny, které libwnck využívá.

#define WNCK_I_KNOW_THIS_IS_UNSTABLE

#include >libwnck/libwnck.h<

int main (void) 
{
}

Příkaz pro překlad:

gcc $(pkg-config --cflags libwnck-1.0) main.c

Výstup pkg-config --cflags libwnck-1.0:

-DXTHREADS -I/usr/include/libwnck-1.0 -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/X11R6/include -I/usr/include/atk-1.0 -I/usr/include/pango-1.0 -I/usr/include/freetype2 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include

[zabza]

Mandriva 2006

[ivok@zero ~]$ rpm -qa|grep libwnck
libwnck-1_16-2.10.3-3mdk
libwnck-1_16-devel-2.10.3-3mdk
libwnck-2.10.3-3mdk
[ivok@zero ~]$ cat x.c 
#include "libwnck/libwnck.h"

int main () {
        return 0;
}
[ivok@zero ~]$ gcc x.c `pkg-config --libs --cflags libwnck-1.0`                 In file included from /usr/include/libwnck-1.0/libwnck/libwnck.h:28,
                 from x.c:1:
/usr/include/libwnck-1.0/libwnck/window.h:26:2: error: #error "libwnck should only be used if you understand that it's subject to frequent change, and is not supported as a fixed API/ABI or as part of the platform"
[ivok@zero ~]$ gcc x.c `pkg-config --libs --cflags libwnck-1.0` -DWNCK_I_KNOW_THIS_IS_UNSTABLE
[ivok@zero ~]$ 

[Martin]

Hura, ted uz to zkompiluju, diky moc !

Ovsem kdyz se pokusim pouzit jakoukoliv funkci libwnck, treba wnck_screen_get_active_workspace nebo wnck_screen_get_default, kompilator mi vzdycky hlasi, ze ji nezna :

/tmp/ccYLqwIy.o(.text+0xd7): In function `main':
main.cpp: undefined reference to `wnck_screen_get_default'
/tmp/ccYLqwIy.o(.text+0xe0):main.cpp: undefined reference to `wnck_screen_get_active_workspace'
/tmp/ccYLqwIy.o(.text+0xf1):main.cpp: undefined reference to `wnck_workspace_get_number'
collect2: ld returned 1 exit status

Nebijte mne prosim, jestli je to nejaka blbost, ja se C++ teprve ucim...

[Fuky]

$ gcc $(pkg-config --cflags --libs libwnck-1.0) main.c

Ještě jsem zapomněl přidat flag --libs.

[Martin]

Jo, ted uz se to zkompiluje bez problemu . Moc diky !