D.1) 1^st part
This practical exercise is about to explain how to develop a .deb file. At the end of this 1^st part you will got a loginteller_0.1-1_i386.deb file able to be installed through GDebi.

Download login-teller's source code.

/* loginteller.c
 * 
 * Based on nomusuari.c at http://www.binefa.net/gnu/gcc/processos/Informacio_d_usuari.html
 * www.binefa.cat
 * 20120507
*/
#include <stdio.h>
#include <unistd.h>		// getlogin()
#include <stdlib.h>		// exit()

int main(){
    char *szNomAcces;

    if((szNomAcces = getlogin())==NULL){
        perror("getlogin");
        exit(EXIT_FAILURE);
    }   
    printf("Your login name at the system is : %s\n",szNomAcces);

    return (0);
}

#############################################################################
# Makefile for building: loginteller
# 20120508 - www.binefa.cat
#############################################################################
####### Compiler, tools and options
CC              = gcc
CFLAGS          = -o
INSTALL_PROGRAM = install -m 755 -p
DEL_FILE        = rm -f
####### Files
SOURCES   = loginteller.c
DESTDIR   = /usr/local/bin
TARGET    = loginteller
####### Compilation
loginteller:
	$(CC) $(SOURCES) $(CFLAGS) $(TARGET)
clean:
	$(DEL_FILE) $(TARGET)
####### Install
install: $(TARGET)
	$(INSTALL_PROGRAM) $(TARGET) $(DESTDIR)
#	install -m 755 $(TARGET) $(DESTDIR)
uninstall:
	$(DEL_FILE) $(DESTDIR)/$(TARGET)
#	rm -f $(DESTDIR)/$(TARGET)

D.2) 2^nd part
This practical exercise is about to explain how to develop a .deb file using a bash script. Files needed for this second part.

#!/bin/bash
# Based on http://rtfreesoft.blogspot.com/2009/12/ldd-package-finder-apt.html
# 20110426 - www.binefa.cat
if [ "$2" = "nocommonlib" ];then
  COMMONLIBS='libc|libdl|dbg|lib64'
  ldd $1|awk '{tmp ="basename "$1; tmp|getline bnso;system("apt-file find "bnso);close(tmp)}'|egrep -v $COMMONLIBS|awk -F':' '{print $1}'|sort|uniq
else
  ldd $1|awk '{tmp ="basename "$1; tmp|getline bnso;system("apt-file find "bnso);close(tmp)}'|awk -F':' '{print $1}'|sort|uniq
fi
exit 0

Use of lddpkgs.sh :

./lddpkgs.sh /usr/bin/gcalctool

being gcalctool an executable binary file developed using GTK+

or

./lddpkgs.sh hola-mon

being hola-mon an executable binary file (included in lddpkgs.tar.gz) developed using Qt

A way to avoid common system libraries at the final output list :

./lddpkgs.sh /usr/bin/gcalctool nocommonlib

or

./lddpkgs.sh hola-mon nocommonlib

A .deb file in this case is thought to install the script in the proper folder. This is the Makefile :

# Makefile for building: lddpkgs.sh
# 20110426 - www.binefa.cat
#############################################################################

####### Files
DESTDIR       = /usr/local/bin
TARGET        = lddpkgs.sh

####### Install
install: $(TARGET)
	install -m 755 $(TARGET) $(DESTDIR)

uninstall:
	rm -f $(DESTDIR)/$(TARGET)

Making .deb file (it is needed script + Makefile in same directory) using checkinstall :
fje@fje-ExtDisc:~/Documents/ISOL/uf3/lddpkgs$ sudo checkinstall

0 -  Maintainer: [ jbinefa@fje.edu ]
1 -  Summary: [ lddpkgs.sh installer ]
2 -  Name:    [ lddpkgs ]
3 -  Version: [ 20110426 ]
4 -  Release: [ 1 ]
5 -  License: [ BSD ]
6 -  Group:   [ utilities ]
7 -  Architecture: [ i386 ]
8 -  Source location: [ lddpkgs ]
9 -  Alternate source location: [  ]
10 - Requires: [ apt-file ]
11 - Provides: [ lddpkgs.sh ]

fje@fje-ExtDisc:~/Documents/ISOL/uf3/lddpkgs$ lddpkgs.sh hola-mon nocommonlib
libfreetype6
libglib2.0-0
libpng12-0
libqt4-dev
libqtcore4
libqtgui4

PRACTICAL EXERCISE

1) Uncompress uf3Ex.zip and create an executable binary (qmake creates a Makefile and make creates an executable binary if source code and Makefile exists). Check if this executable running looks like this screen shot :

2.1) make install (It installs executable binary at /usr/local/bin)

2.2) make uninstall (It removes executable binary from /usr/local/bin)

2.3) make clean (It removes *.o, *.pro.user, ui_*, moc_* files)

3.1) Modify Maintainer, Summary, Version, License and Group parameters

3.2) To do a list with no common library dependencies

3.2) Modify Requires parameter

3.3) .deb file created without errors

4) Install .deb file on your Debian. Check if it works properly.

7) Install .rpm file on a Fedora machine. Check if it works properly.