The undefined reference to g_free should be found in libg, which contains some general utility/cleanliness wrappers (e.g. g_free is a wrapper to free). At some relatively recent point in Gtk development, these wrappers were put in their own library. This should come with the Gtk distribution, but must be stated in the linker command line. see www.gtk.org for details. hope this helps, Niels HP, [EMAIL PROTECTED] > ---------- > From: Glynn Clements[SMTP:[EMAIL PROTECTED]] > Reply To: Glynn Clements > Sent: 3. november 1998 23:30 > To: Syslab Sales and Services Pvt Ltd. > Cc: [EMAIL PROTECTED] > Subject: Re: newbie problem with linker paths > > > Syslab Sales and Services Pvt Ltd. wrote: > > > > Static libraries have to be specified *after* the file which uses > > > them. When a static library is linked, only those functions which are > > > known to be required are linked in. > > > > > > Try putting the -lgtk last. > > > > When I try putting it last, again I get tons of error messages > > like (hundreds of such messages: > > > > /usr/src/bs/BUILD/gtk+970925/gdk/gdkwindow.c:1186: undefined reference > to > > `g_free' > > /usr/src/bs/BUILD/gtk+970925/gdk/gdkwindow.c:1188: undefined reference > to > > `XFree' > > /usr/lib/libgdk.a(gdkxid.o): In function `gdk_xid_table_insert': > > /usr/src/bs/BUILD/gtk+970925/gdk/gdkxid.c:33: undefined reference to > > `g_warning' > > By `last', I meant after sample.c (which should be first). > > libgtk appears to depend upon libgdk, so you need to list -lgdk after > -lgtk. libgdk itself presumably requires libX11, so you would need to > use e.g. > > -lgtk -lgdk -L/usr/X11/lib -lX11 > > There may also be other dependencies. In general, any library upon > which an object or library depends must be listed *after* that file in > the link command when performing static linking. `ldd' should display > the dependencies. > > However, this is irrelevant. You shouldn't be trying to link > statically unless you have a specific reason to do so. > > > > > And when I use > > > > gcc -o samp -lgtk sample.c > > > > > > > > I get a whole lot of error messages some of which are as follows... > > > > > > [undefined gdk_* references snipped] > > > > > > You also need need libgdk, e.g. > > > > > > gcc -o samp -lgtk -lgdk sample.c > > > > > > > this is what is happening > > > > [root@localhost /root]# gcc -o samp -lgtk -lgdk sample.c > > ld: warning: libc.so.5, needed by /usr/i486-linux-libc5/lib/libX11.so.6, > > may conflict with libc.so.6 > > You're linking against the wrong X libraries (i.e. the libc-5 > versions). > > You need to add `-L/usr/X11/lib', e.g. > > gcc -o samp sample.c -lgtk -lgdk -L/usr/X11/lib -lX11 > > You may need other libraries; I don't have GTK installed, so I can't > tell. > > -- > Glynn Clements <[EMAIL PROTECTED]> >
