Re: "Cannot finding signal handler" even after compiling with -rdynamic

[Jay Aurabind <jay aurabind gmail com>]

On 17 January 2016 at 21:01, Jean Bréfort <jean brefort normalesup org> wrote:
> Hi,
>
> You shoud not have them static. The symbol is not exported. Otherwise
> you need to get the widget from the GtkBuilder and set the signal from
> you code and not from the glade file.
>
> Hope this helps,
> Jean

Thank you very much Jean! That solved the issue!  :-)

> Le dimanche 17 janvier 2016 à 20:55 +0530, Jay Aurabind a écrit :
> > Hi,
> >
> > I am learning GTK programming. I am using glade to create a UI and
> > then using GtkBuilder to show it.
> >
> > When I run my application, it gives number errors regarding signal
> > handlers:
> > -------------------------------------------------------------------
> > -----------------------------------------------
> > (vaken_gtk:11467): Gtk-WARNING **: Could not find signal handler
> > 'cb_ld_payload'.  Did you compile with -rdynamic?
> >
> > (vaken_gtk:11467): Gtk-WARNING **: Could not find signal handler
> > 'cb_loadkey'.  Did you compile with -rdynamic?
> >
> > (vaken_gtk:11467): Gtk-WARNING **: Could not find signal handler
> > 'cb_genkey'.  Did you compile with -rdynamic?
> > -------------------------------------------------------------------
> > -----------------------------------------------
> > I have these functions in the same file. One of them look like:
> >
> >
> > -------------------------------------------------------------------
> > ---------------------
> > static void cb_genkey(GtkWindow *wid,gpointer user_data)   {
> >     printf("Hi\n");
> > }
> > -------------------------------------------------------------------
> > ---------------------
> >
> > I found some other posts in which people got the issue solved after
> > putting proper compiler/linker flags. I am using Anjuta and tried a
> > lot of combination for passing  "-rdynamic" and/or
> > "-Wl,--export-dynamic". Yet my application always complain it cannot
> > find the signal handler.
> >
> > My make -n output (removing echo) is:
> > -------------------------------------------------------------------
> > -----------------------------------------------
> > gcc -DHAVE_CONFIG_H -I. -I/home/aj/learning/c/gtk/vaken/src -I..
> > -DPACKAGE_LOCALE_DIR=\""/usr/local/share/locale"\"
> > -DPACKAGE_SRC_DIR=\""/home/aj/learning/c/gtk/vaken/src"\"
> > -DPACKAGE_DATA_DIR=\""/usr/local/share/vaken_gtk"\" -pthread
> > -I/usr/include/gtk-3.0 -I/usr/include/at-spi2-atk/2.0
> > -I/usr/include/at-spi-2.0 -I/usr/include/dbus-1.0
> > -I/usr/lib64/dbus-1.0/include -I/usr/include/gtk-3.0
> > -I/usr/include/gio-unix-2.0/ -I/usr/include/cairo
> > -I/usr/include/pango-1.0 -I/usr/include/harfbuzz
> > -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo
> > -I/usr/include/pixman-1 -I/usr/include/freetype2
> > -I/usr/include/libpng16 -I/usr/include/freetype2
> > -I/usr/include/libdrm
> > -I/usr/include/libpng16 -I/usr/include/gdk-pixbuf-2.0
> > -I/usr/include/libpng16 -I/usr/include/glib-2.0
> > -I/usr/lib64/glib-2.0/include   -Wl,--export-dynamic -rdynamic  -g
> > -O0
> > -MT vaken_gtk-main.o -MD -MP -MF .deps/vaken_gtk-main.Tpo -c -o
> > vaken_gtk-main.o `test -f 'main.c' || echo
> > '/home/aj/learning/c/gtk/vaken/src/'`main.c
> > mv -f .deps/vaken_gtk-main.Tpo .deps/vaken_gtk-main.Po
> > rm -f vaken_gtk
> >
> > gcc -Wl,--export-dynamic -rdynamic  -g -O0   -o vaken_gtk
> > vaken_gtk-main.o -lgtk-3 -lgdk-3 -lpangocairo-1.0 -lpango-1.0
> > -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0
> > -lgobject-2.0 -lglib-2.0
> > -------------------------------------------------------------------
> > ----------------------------------------------
> >
> > Still the application complains about missing signal handlers. Full C
> > code at https://paste.gnome.org/pdg0iivsg
> >  Glade UI file at https://paste.gnome.org/ppnpbtkid
> >
> > Please help.
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-- 

Thanks and Regards,
Aurabindo J