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

[Ian Chapman <ichapman videotron ca>]

Yes, I had something like that and ended with this which I hope may help 
you.  I was thinking pull the widgets out of the glade file if that 
makes sense.  Ian
main.cpp

GtkWidget *Battery, *Temp, *Chip_volts; //these are GtkProgressBar 
derived from glade.

int
main (int argc, char *argv[])
{
        GtkBuilder              *builder;
        GtkWidget               *window;

    printf("Entered gtk_init.\n");

        gtk_init (&argc, &argv);    //Gets gtk going.
        builder = gtk_builder_new ();
        gtk_builder_add_from_file (builder, "main.glade", NULL);
        window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
        Battery = GTK_WIDGET (gtk_builder_get_object (builder, "Battery"));
        Temp = GTK_WIDGET (gtk_builder_get_object (builder, "Temp"));
        Chip_volts = GTK_WIDGET (gtk_builder_get_object (builder, 
"Chip_volts"));
        gtk_builder_connect_signals (builder, NULL);
        g_object_unref (G_OBJECT (builder));

        gtk_widget_show (window);
    printf("Main set up and showing window. \n");
// ****************************************************************
    gtk_main ();

    printf("Exiting MAIN. \n");

        return 0;
}



On 01/17/16 10:25, Jay Aurabind wrote:
> 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.