View source for Build Standalone Qt Application for Windows

[[Category:HowTo]]
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== Goal ==
The goal of this article is to show how to build a standalone executable file of a Qt application for Microsoft Windows. This is an executable file that has no dependencies (aka does not require any dynamic linking to libraries). To create such a standalone version of a Qt application all required libraries should be embedded into the application using static linking. Please note that the size of the executable file will be larger.

== Build a static version of Qt ==
The first step is to build a static version of Qt. The commands that should be executed depend on the desired platform MinGW ('''win32-g++''') or Microsoft Visual Studio ('''win32-msvc''').

=== Using MinGW ===
 > configure -static -release -no-exceptions
 > mingw32-make sub-src

More information on static builds with mingw can be found [http://developer.qt.nokia.com/wiki/How_to_build_a_static_Qt_version_for_Windows_with_gcc here]  [developer.qt.nokia]

=== Using Microsoft Visual Studio ===
Make sure that Microsoft Visual Studio is installed. Start the Visual Studio 2008 Command Prompt. Otherwise you may get errors due to wrong or missing paths. Execute the following commands in the directory where Qt is installed (for example: C:\6.3\):

 > configure -static -release -platform win32-msvc
 > nmake sub-src

Please note that reconfiguring and building Qt is a time consuming procedure. The duration may vary depending on the hardware of your computer.

== Build a static application ==
Modify the .pro file of the project by adding an option for static linking.
<tt>CONFIG+= static</tt>

=== Using MinGW ===
To build the application run consecutively qmake and mingw32-make.

 > qmake Hello.pro
 > mingw32-make

=== Using Microsoft Tools ===
To build the Qt project as a standalone executable file run qmake and nmake. After that you should execute mt.exe to embed a manifest inside the application to avoid error such as missing '''MSVCP90.dll''' when the application is started on other computers.

 > qmake Hello.pro
 > nmake release
 > cd release
 > mt.exe -manifest Hello.exe.manifest -outputresource: Hello.exe

Please note that the names of the manifest and the executable file depend on the name of your project.

== See also ==
* [http://www.qtcentre.org/wiki/index.php?title=Building_static_applications Building static applications]
* [http://www.qtcentre.org/wiki/index.php?title=Building_static_Qt_on_Windows Building static Qt on Windows]
* [http://msdn.microsoft.com/en-us/library/ms235591(v=VS.80).aspx How to: Embed a Manifest Inside a C/C++ Application]
* [http://developer.qt.nokia.com/wiki/How_to_build_a_static_Qt_version_for_Windows_with_gcc How to build a static Qt version for Windows with GCC]

== References ==
* [http://www.anavi.org/article/140/ Standalone Qt Application for Microsoft Windows]