1. Compiling
Qt
-­‐
apps
Jussi
Pohjolainen
Tampere
University
of
Applied
Sciences

2. source.cpp
#include <QtWidgets>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QLabel b;
b.setText("moi");
b.show();
return a.exec();
}

3. Crea@ng
Project
• Create
new
projecBolder
and
save
the
source.cpp
into
the
folder
– /QtHelloWorld/source.cpp
• Create
plaBorm
independent
project
file
– qmake –project
• Creates
– /QtHelloWorld/QtHelloWorld.pro

4. pro?
######################################################################
# Automatically generated by qmake (3.0) ke maaliskuuta 4 10:34:14 2015
######################################################################
TEMPLATE = app
TARGET = QtHelloWorld
INCLUDEPATH += .
# add this!
QT += widgets
# Input
SOURCES += source.cpp

5. qmake
• AGer
building
the
project
–
file,
we
well
create
a
pla$orm
specific
makefile
• makefile
=
informa@on
how
to
build
the
target
program
(compile
instruc@ons)
• In
Mac
OS
X,
the
qmake
creates
automa@cally
Xcode
–
project
files.
Use:
qmake -spec
macx-g++
• In
other
systems,
qmake should
be
enough.

6. qmake
usage
on
Mac
OS
X

7. make
and
running
• make
will
compile
the
applica@on
using
the
instruc@ons
in
the
makefile
• AGer
compila@on
you
can
run
the
applica@on

8. Compiling
and
Running

9. Build
Steps
• qmake –project
– Creates
plaBorm
independent
project
file
• qmake
– Creates
plaBorm
specific
makefile
• make
– Compiles
the
applica@on
• ./helloworld
– Starts
the
app
(depends
on
the
plaBorm)