Re: Problem Linking with GTK 1.2.9 and 1.2.10

[WAN Hing Wah <50191914 ee cityu edu hk>]

the gtk+ tutorial is updated for gtk+ 2.0

G_OBJECT and G_CALLBACK are macros in glib 2.0 and g_signal_connect is 
function in glib 2.0 ,so you should use gtk+ 2.0 instead
or use gtk_signal_connect instead 

On Tue, 9 Apr 2002, Edward Nicholas wrote:

> Hi I am new to programming with GTK. I am having a problem linking the
> example helloworld program (the one in the tutorial). I have tried on
> solaris and linux with GTK versions 1.2.9 and 1.2.10 respectively. The
> program compiles ok using:
>
> gcc `gtk-config --cflags` -c helloworld.c
>
> How ever when it comes to linking I get the following error message:
>
> gcc -o helloworld helloworld.o -L/usr/openwin/lib/ -ldga `gtk-config
> --libs`
>
> helloworld.o: In function `main':
> helloworld.o(.text+0xa4): undefined reference to `G_OBJECT'
> helloworld.o(.text+0xb8): undefined reference to `G_CALLBACK'
> helloworld.o(.text+0xd4): undefined reference to `g_signal_connect'
> helloworld.o(.text+0xe0): undefined reference to `G_OBJECT'
> helloworld.o(.text+0xf4): undefined reference to `G_CALLBACK'
> helloworld.o(.text+0x110): undefined reference to `g_signal_connect'
> helloworld.o(.text+0x15c): undefined reference to `G_OBJECT'
> helloworld.o(.text+0x170): undefined reference to `G_CALLBACK'
> helloworld.o(.text+0x18c): undefined reference to `g_signal_connect'
> helloworld.o(.text+0x198): undefined reference to `G_OBJECT'
> helloworld.o(.text+0x1ac): undefined reference to `G_CALLBACK'
> helloworld.o(.text+0x1c8): undefined reference to
> `g_signal_connect_swapped'
> collect2: ld returned 1 exit status
> gmake: *** [all] Error 1
>
> It appears to me that the glib libraries are not being linked correctly
> (I believe that the undefined references starting with G_ or g_ refer to
> glib?). 
>
> I have examined the output of gtk-config and I get the following which
> this appears to include the correct libraries. (Although on solaris I
> have to link against -ldga as well - see above).
>
> % gtk-config --libs
> -L/opt/gnome-1.4/lib -lgtk -lgdk -lgmodule -lglib -ldl -lXext -lX11
> -lsocket -lnsl -lm
>
> Thanks