Re: [open-cobol-list] OC_GTK help

[David Essex]

Michael wrote:

> I've been trying to make use of OpenCobol with GTK. I've compiled 
> ocgtk.c, and ocgtkhtml.cob.
> i get the following errors:
> ocgtk.o:ocgtk.c:(.text+0x147): undefined reference to `_G_CALLBACK'
> ocgtk.o:ocgtk.c:(.text+0x154): undefined reference to `_G_OBJECT'
> ocgtk.o:ocgtk.c:(.text+0x170): undefined reference to `_g_signal_connect'
> ocgtk.o:ocgtk.c:(.text+0x194): undefined reference to 
> `_gtk_type_check_object_cast'
>
> What am I missing?
>
> Platform cygwin on WinXP Pro.
>
> I've successfully compiled and executed the follow GTK "C" program: so I 
> know I have GTK installed correctly:

You are missing a library in your link step.
If available, use 'gtk-config --libs' or 'pkg-config --libs gtk+-2.0' 
script to get all the libraries.

Example on Linux:
#gtk-config --libs
-L/usr/lib -L/usr/X11R6/lib -lgtk \
-lgdk -rdynamic -lgmodule -lglib -ldl -lXext -lX11 -lm

Or better still, create a native WinXP application using the Win32 API.
Hint, a COBOL (sub)program is equivalent to a C function.