qwtinstall.3
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.TH "qwtinstall" 3 "Sat Jan 26 2013" "Version 6.1-rc3" "Qwt User's Guide" \" -*- nroff -*-
.ad l
.nh
.SH NAME
qwtinstall \- INSTALL
.PP
.nf
Introduction
============
Qwt uses qmake to build all its components and examples\&.
qmake is part of a Qt distribution\&.
qmake reads project files, that contain the options and rules how to
build a certain project\&. A project file ends with the suffix '*\&.pro'\&.
Files that end with the suffix '*\&.pri' are included by the project
files and contain definitions, that are common for several project files\&.
qwtconfig\&.pri and qwtbuild\&.pri are read by all project files of the Qwt
package\&. qwtconfig\&.pri is also read by qwt\&.prf, when building your
application\&. So the first step is to edit the *\&.pri files to adjust
them to your needs\&.
The subdirs template of qmake is known to be buggy when using spaces
in path names\&. So better don't build Qwt below a path name with spaces\&.
( Otherwise you might have to run qmake in all subdirs manually )\&.
Documentation
==========================
Qwt includes a class documentation, that is available in various formats:
- Html files
- PDF document
- Qt Compressed Help (*\&.qch ) for the Qt assistant or creator\&.
You can load it 'Edit Preferences' -> 'Documentation' -> 'Add\&.\&.\&.'
Building Qwt
==========================
The easiest way to build Qwt is from the command line - but when you
insist on using an IDE don't forget the 'make install' step\&.
A) Unix
--------
qmake qwt\&.pro
make
make install
If you have installed a shared library it's path has to be known to
the run-time linker of your operating system\&. On Linux systems read
'man ldconfig' ( or google for it )\&. Another option is to use
the LD_LIBRARY_PATH (on some systems LIBPATH is used instead, on MacOSX
it is called DYLD_LIBRARY_PATH) environment variable\&.
If you only want to check the Qwt examples without installing something,
you can set the LD_LIBRARY_PATH to the lib directory
of your local build\&.
If you didn't enable autobuilding of the examples in qwtconfig\&.pri
you have to build the examples this way:
cd examples
qmake examples\&.pro
make
B) Win32/MSVC
--------
Check that your Qt version has been built with MSVC - not with MinGW !
Please read the qmake documentation how to convert
your *\&.pro files into your development environment\&.
F\&.e MSVC with nmake:
qmake qwt\&.pro
nmake
nmake install
If you didn't enable autobuilding of the examples in qwtconfig\&.pri
you have to build the examples this way:
cd examples
qmake examples\&.pro
nmake
Windows doesn't like mixing of debug and release binaries\&. Most
of the problems with using the Qwt designer plugin are because
of trying to load a Qwt debug library into a designer release
executable\&.
It's not possible to load a plugin, that has been built with MinGW
into a Qt Designer/Creator, that has been built with MSVC ( and v\&.v )\&.
This is a common reason for problems, when working with prebuild
binaries of the Qt Creator\&.
C) Win32/MinGW
--------
Check that your Qt version has been built with MinGW - not with MSVC !
Start a Shell, where Qt4 is initialized\&. ( F\&.e\&. with
'Programs->Qt by Trolltech \&.\&.\&.->Qt 4\&.x\&.x Command Prompt' )\&.
Check if you can execute 'make' or something like 'mingw32-make'\&.
qmake qwt\&.pro
make
make install
If you didn't enable autobuilding of the examples in qwtconfig\&.pri
you have to build the examples this way:
cd examples
qmake examples\&.pro
make
Windows doesn't like mixing of debug and release binaries\&. Most
of the problems with using the Qwt designer plugin are because
of trying to load a Qwt debug library into a designer release
executable\&.
Don't forget to tell qmake where to find qwt\&.prf:
qmake -set QMAKEFEATURES \&.\&.\&.
D) MacOSX
--------
Well, the Mac is only another Unix system\&. So read the instructions in A)\&.
In the recent Qt4 releases the default target of qmake is to generate
XCode project files instead of makefiles\&. So you might need to do the
following:
qmake -spec macx-g++ qwt\&.pro
\&.\&.\&.
E) Qt Embedded
--------
I only tested Qwt with Qt Embedded in qvfb (Virtual Framebuffer Devivce)
Emulator on my Linux box\&. To build Qwt for the emulator was as simple as
for a regular Unix build\&.
F) Symbian
--------
I never tried this platform myself\&.
Using Qwt
===========
For building a Qwt application with qmake use the Qwt configuration features
file, that has been installed by 'make install'\&. When qmake is able to find
it ( https://qt-project\&.org/doc/qt-4\&.8/qmake-advanced-usage\&.html#adding-new-configuration-features )
you can simply add 'CONFIG += qwt' to your application project file\&.
If you don't use qmake you have to add the include path to find the Qwt
headers to your compiler flags and the Qwt library to your linker list\&.
Don't forget to add QWT_DLL to the compiler flags, when you work with a
Qwt-DLLs on Windows\&.
For using the designer plugin you have to configure the Qt designer/creator
where to look for plugins\&. This can be done by setting the QT_PLUGIN_PATH or
using a qt\&.conf file ( see http://doc\&.qt\&.nokia\&.com/4\&.7/deployment-plugins\&.html )\&.
Beside the plugin the Qwt library itsself also needs to be known to the Designer/Creator
( see LD_LIBRARY_PATH, PATH \&.\&.\&. above )\&.
Good luck !
.fi
.PP