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.. highlight:: cpp
.. _gentut-libfoo:
Creating the foo library
=========================
In this section is the code and build instructions for a very simple Qt4 based
library which will serve as a subject for this tutorial.
The Source Code
---------------
There is only one class on this foo library plus a ``.pro`` file which means
that the build system used will be Trolltech's **qmake**.
Put the files below in a directory called **libfoo**. Be aware that this
directory will be refered by the binding Makefile presented in a next section
of this tutorial. If you want to use other names or paths change the binding
Makefile accordingly. Blind copy'n'paste shortens your life.
**libfoo/foo.h**
::
#ifndef FOO_H
#define FOO_H
#include <QtCore/QtCore>
class Math : public QObject
{
Q_OBJECT
public:
Math() {}
virtual ~Math() {}
int squared(int x);
};
#endif // FOO_H
**libfoo/foo.cpp**
::
#include "foo.h"
int Math::squared(int x)
{
return x * x;
}
**libfoo/foo.pro**
::
TEMPLATE = lib
TARGET = foo
DEPENDPATH += .
INCLUDEPATH += .
HEADERS += foo.h
SOURCES += foo.cpp
To build the lib:
::
$ cd libfoo
$ qmake
$ make
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