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paragasu
Familiar Face


Joined: 31 Jul 2008
Posts: 44
PostPosted: Wed Oct 01, 2008 6:10 am    Post subject: undefined reference to Reply with quote
I spent half day trying to solve this. I hope someone here can give me a direction.

I have a gtk app with this file in one directory
Code: (Plaintext)
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main.c 
data.h - struct / datatypes
loan.c  - function
loan.h - header file for loan.c
menu.c - one function to create gtk window menu
menu.h - header file form menu.c


i created a make file like this

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LDFLAGS = `pkg-config --cflags --libs libgnomedb-3.0`

ekoken: main.o menu.o loan.o
    gcc -o ekoken main.o menu.o loan.o $(LDFLAGS)

menu.o: menu.c menu.h data.h
    gcc -c menu.c $(LDFLAGS)

loan.o: loan.c loan.h data.h
    gcc -c loan.c $(LDFLAGS)

main.o: main.c menu.h loan.h data.h
    gcc -c main.c $(LDFLAGS)

clean:
    rm -f *.o ekoken


but when i run $make . i get a bunch of error
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loan.h:3: warning: ‘loan_new_record’ used but never defined
main.c:(.text+0x6de): undefined reference to `loan_display_next_record'


anyone have any idea what i done wrong?

thank you

Last edited by paragasu on Wed Oct 01, 2008 6:34 am; edited 1 time in total
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paragasu
Familiar Face


Joined: 31 Jul 2008
Posts: 44
PostPosted: Wed Oct 01, 2008 6:33 am    Post subject: this might help Reply with quote
when i do
$ gcc -c main.c `pkg-config --cflags --libs libgnomedb-3.0`

i got

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loan.h:3: warning: ‘loan_new_record’ used but never defined
loan.h:4: warning: ‘loan_display_reset’ used but never defined
loan.h:5: warning: ‘loan_display_next_record’ used but never defined
loan.h:6: warning: ‘loan_change_view’ used but never defined
loan.h:7: warning: ‘loan_prepare_data’ used but never defined
loan.h:8: warning: ‘loan_find_account’ used but never defined
loan.h:9: warning: ‘loan_payment’ used but never defined
loan.h:10: warning: ‘loan_update_setting’ used but never defined
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Mk27
GTK+ Guru


Joined: 07 Aug 2008
Posts: 100
Location: NYC
PostPosted: Wed Oct 01, 2008 1:53 pm    Post subject: Reply with quote
This may not be the solution you want, but if the files are so small, can't you just combine loan.h and loan.c?
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dreblen
Never Seen the Sunlight


Joined: 14 Jun 2007
Posts: 936
Location: Falun, WI USA
PostPosted: Wed Oct 01, 2008 2:47 pm    Post subject: Reply with quote
If it's possible to post your code, it would be a great help.
Thanks...
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paragasu
Familiar Face


Joined: 31 Jul 2008
Posts: 44
PostPosted: Thu Oct 02, 2008 12:25 am    Post subject: code Reply with quote
here is the code inside loan.h

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#include <libgnomedb/libgnomedb.h>

static void loan_new_record (gpointer data);
static void loan_display_reset ( GtkWidget *data);
static void loan_display_next_record (gpointer data);
static void loan_change_view (gpointer data);
static void loan_prepare_data(void);
static void loan_find_account(GtkWidget *dialog, gpointer data);
static void loan_payment (GtkWidget *button, gpointer data);
static void loan_update_setting (gpointer data);

GtkWidget *loan_display_image (GdaDataModel *model, gint colno);
GtkWidget *loan_display_account (GdaDataModel *model);


main.c
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#include <libgnomedb/libgnomedb.h>
#include <glib/gprintf.h>
#include "data.h"
#include "loan.h"
#include "menu.h"

int main(int argc, char **argv)
{
    GtkWidget *window;
    GdaParameterList *params, *data_set;
    GdaParameter    *param;
    GtkWidget *page1, *page2, *page3, *page4, *page5;
    GtkWidget *hnotebook, *vnotebook;
    GdaDataModelIter *iter;
   
    edb   = g_new0(EkokenDB, 1);
    euser = g_new0(EkokenUser, 1);
    emenu = g_new0(EkokenMenu, 1);
   
    gnome_db_init("ekoken", "1.0", argc, argv);

    GtkWidget *logindlg;
    logindlg = gnome_db_login_dialog_new("EKOKEN MOTOR SND BHD");
    if(!gnome_db_login_dialog_run(GNOME_DB_LOGIN_DIALOG(logindlg))){
        g_print("login cancelled!\n");
        exit(0);
    }


    GdaClient *client;
    GError *error = NULL;

    client = gda_client_new();
    cnc = gda_client_open_connection(client,
    gnome_db_login_dialog_get_dsn(GNOME_DB_LOGIN_DIALOG(logindlg)),
    gnome_db_login_dialog_get_username(GNOME_DB_LOGIN_DIALOG(logindlg)),
    gnome_db_login_dialog_get_password(GNOME_DB_LOGIN_DIALOG(logindlg)),
    GDA_CONNECTION_OPTIONS_DONT_SHARE, &error);

    if(!cnc) {
        g_print("fail to connect to database server\n");
        exit(0);
    }
   
    gtk_widget_destroy(logindlg);

    dict = gda_dict_new();
    gda_dict_set_connection(dict, cnc);
   
    loan_prepare_data();
   

    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title(GTK_WINDOW(window), "EKOKEN MOTOR SND BHD");
    gtk_window_set_icon(GTK_WINDOW(window),
                        gdk_pixbuf_new_from_file("pixmaps/logo.jpg", NULL));
   
    gtk_window_maximize(GTK_WINDOW(window));
    g_signal_connect(GTK_WINDOW(window), "delete-event",
                                    gtk_main_quit, NULL);
   
    gtk_container_set_border_width (GTK_CONTAINER (window), 2);

    GtkWidget *vbox = gtk_vbox_new(FALSE, 0);
    gtk_container_add(GTK_CONTAINER(window), vbox);

    GtkWidget *menubar = loan_create_menu();
    gtk_box_pack_start(GTK_BOX(vbox), menubar, FALSE, FALSE, 0);
   
    page1 = gnome_db_raw_grid_new(edb->dpage1);

    g_signal_connect (G_OBJECT (page1), "selection-changed",
                            G_CALLBACK(user_struct_update),
                            (gpointer) page1);
   
    g_signal_connect_swapped (G_OBJECT (emenu->next), "clicked",
                                G_CALLBACK (loan_display_next_record),
                              (gpointer) page1);
   
    g_signal_connect_swapped (G_OBJECT (page1), "row-activated",
                              G_CALLBACK (loan_change_view),
                              (gpointer) vnotebook);   
   
    gnome_db_raw_grid_set_sample_start(
                        GNOME_DB_RAW_GRID (page1),
                        100);
   
    /*restrict*/

    iter = gnome_db_data_widget_get_current_data(
                                GNOME_DB_DATA_WIDGET (page1));
   
    param = GDA_PARAMETER (g_slist_nth_data (
                        GDA_PARAMETER_LIST (iter)->parameters, 0));   
   
    params = gda_data_model_query_get_parameter_list (
                        GDA_DATA_MODEL_QUERY(edb->dacc));
    gda_parameter_bind_to_param (GDA_PARAMETER (params->parameters->data),
                                 param);
   
   
    params= gda_data_model_query_get_parameter_list (
                        GDA_DATA_MODEL_QUERY(edb->dloan));
    gda_parameter_bind_to_param (GDA_PARAMETER (params->parameters->data),
                                 param);
   
    params = gda_data_model_query_get_parameter_list (GDA_DATA_MODEL_QUERY(edb->dpic));
    gda_parameter_bind_to_param (GDA_PARAMETER (params->parameters->data),
                                 param);
   
    params = gda_data_model_query_get_parameter_list (GDA_DATA_MODEL_QUERY(edb->dpay));
    gda_parameter_bind_to_param (GDA_PARAMETER (params->parameters->data),
                                 param);
       
    page2 = gnome_db_raw_form_new(edb->dacc);
    page3 = gnome_db_raw_form_new(edb->dloan);
    page4 = gnome_db_raw_form_new(edb->dpic);
    page5 = gnome_db_raw_grid_new(edb->dpay);
   
    GtkWidget *test = loan_display_account (edb->dacc);
   
   
    data_set= GDA_PARAMETER_LIST (
                 gnome_db_basic_form_get_data_set(
                     GNOME_DB_BASIC_FORM (page4)));
   
    /*
     * GdaParameter *p2param = gda_parameter_list_find_param (data_set, "photo");   
     */
    GdaParameter *p2param = GDA_PARAMETER (g_slist_nth_data (data_set->parameters, 0));
    g_object_set (G_OBJECT (p2param), "entry_plugin", "picture", NULL);
   
    GtkWidget *photo = loan_display_image (edb->dpic, 0);
   
    vnotebook = gtk_notebook_new();
    hnotebook = gtk_notebook_new();
   
    gtk_notebook_set_tab_pos(GTK_NOTEBOOK(vnotebook), GTK_POS_BOTTOM);
    gtk_notebook_set_show_border(GTK_NOTEBOOK(hnotebook), TRUE);
    gtk_container_set_border_width (GTK_CONTAINER (hnotebook), 5);
   
    GtkWidget *hbox = gtk_hbox_new (FALSE, 5);
    gtk_box_pack_start( GTK_BOX (hbox), page2, FALSE, FALSE, 10);
    gtk_box_pack_start( GTK_BOX (hbox), page3, FALSE, FALSE, 10);
    gtk_box_pack_start( GTK_BOX (hbox), test, FALSE, FALSE, 10);
   
    gtk_notebook_append_page(GTK_NOTEBOOK(vnotebook), page1,
                             gtk_label_new("Browse Account"));
    gtk_notebook_append_page(GTK_NOTEBOOK(vnotebook), hnotebook,
                             gtk_label_new("Account Information"));
   
    gtk_notebook_append_page(GTK_NOTEBOOK(hnotebook), hbox,
                             gtk_label_new("Account"));
   
    gtk_notebook_append_page(GTK_NOTEBOOK(hnotebook), page5,
                             gtk_label_new("Payment"));

    GtkWidget *statusbar = gtk_statusbar_new();   
    gtk_box_pack_end(GTK_BOX(vbox), statusbar, FALSE, FALSE, 0);
    gtk_box_pack_end(GTK_BOX(vbox), vnotebook, TRUE, TRUE, 5);
   
    /*callback*/

   
    g_signal_connect (G_OBJECT (emenu->quit), "activate",
                            G_CALLBACK (gtk_main_quit), NULL);
   
    g_signal_connect (G_OBJECT (emenu->search_acc), "activate",
                            G_CALLBACK (loan_find_account), NULL);
   
    g_signal_connect (G_OBJECT (emenu->about), "activate",
                            G_CALLBACK (rogon_about), NULL);
   
    g_signal_connect (G_OBJECT (emenu->setting), "activate",
                            G_CALLBACK (loan_update_setting), NULL);
   
    g_signal_connect (G_OBJECT (emenu->loan_pay), "activate",
                                G_CALLBACK (loan_payment),
                                (gpointer) window);
   
    g_signal_connect_swapped (G_OBJECT (emenu->new), "activate",
                                G_CALLBACK (loan_new_record),
                                (gpointer) page2);
                             
    g_signal_connect_swapped (G_OBJECT (emenu->refresh), "clicked",
                                G_CALLBACK (loan_display_reset), page1);
   

    /*end of callback section*/
   
    gtk_widget_show_all(window);
    gtk_main();
   
    gda_connection_close(cnc);
    return 0;
}


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owl102
GTK+ Geek


Joined: 23 May 2008
Posts: 68
PostPosted: Thu Oct 02, 2008 5:43 am    Post subject: Re: code Reply with quote
paragasu wrote:
here is the code inside loan.h

Code: (C)
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...
static void loan_new_record (gpointer data);
static void loan_display_reset ( GtkWidget *data);
static void loan_display_next_record (gpointer data);
static void loan_change_view (gpointer data);
static void loan_prepare_data(void);
static void loan_find_account(GtkWidget *dialog, gpointer data);
static void loan_payment (GtkWidget *button, gpointer data);
static void loan_update_setting (gpointer data);
...


Usually it's not a good idea to do static declarations in a header (*.h) file. If the functions should be exported (so other modules can use them), simply write
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void loan_new_record (gpointer data);
void loan_display_reset ( GtkWidget *data);
...

(without the "static") in the header file. If they should not be exported, put the above "static" declarations in the code file (*.c) instead, where the implementation can be found, too.

HTH
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paragasu
Familiar Face


Joined: 31 Jul 2008
Posts: 44
PostPosted: Thu Oct 02, 2008 11:34 am    Post subject: thanks Reply with quote
it works after i remove all the static declaration in the function.

thank owl102
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