gcc generate .o file instead of executable

Question

I'm trying to debug claws-mail notification plugin, I have code like this:

#include "notification_indicator.h"
#include "notification_prefs.h"
#include "notification_core.h"

#include "folder.h"
#include "common/utils.h"

#include <messaging-menu.h>
#include <unity.h>

#define CLAWS_DESKTOP_FILE "claws-mail.desktop"

#include <stdio.h>

void main(void)
{
  GList *cur_mb;
  gint total_message_count;


  total_message_count = 0;
  /* check accounts for new/unread counts */
  for(cur_mb = folder_get_list(); cur_mb; cur_mb = cur_mb->next) {
    Folder *folder = cur_mb->data;
    NotificationMsgCount count;

    if(!folder->name) {
      printf("Notification plugin: Warning: Ignoring unnamed mailbox in indicator applet\n");
      continue;
    }
    gchar *id = folder->name;
    notification_core_get_msg_count_of_foldername(folder->name, &count);
    printf("%s: %d\n", folder->name, count.unread_msgs);
  }
}

and I'm compiling it with this command:

gcc  -I/home/kuba/Pobrane/claws-mail-3.13.2/src/
     -I/usr/include/gtk-2.0/
     -I/usr/include/cairo/
     -I/usr/include/pango-1.0
     -I/usr/lib/i386-linux-gnu/gtk-2.0/include/
     -I/usr/include/gdk-pixbuf-2.0/
     -I/usr/include/atk-1.0/
     -I/home/kuba/Pobrane/claws-mail-3.13.2/src/common
     -I/home/kuba/Pobrane/claws-mail-3.13.2/src/gtk
     -I/usr/include/messaging-menu/
     -I/usr/include/unity/unity/
     -I/usr/include/dee-1.0/
     -I/usr/include/libdbusmenu-glib-0.4/
     -c `pkg-config --cflags glib-2.0` test.c

but gcc create object file test.o instead of a.out how can I create executable file? I'm running this on Xubuntu.

Answer 1

Remove the -c option from the commandline (which generates the object file instead of executable).

From man gcc:

-c
Compile or assemble the source files, but do not link. The linking stage simply is not done. The ultimate output is in the form of an object file for each source file.

Examples:

To generate an object file (`.o' file):

gcc -c test.c 

To generate an executable:

gcc test.c -o test

(if you omit the -o test, it'd generate a.out as executable by convention).