Change Qt install path after building?

Question

how can I change Qt install path after I building it ?

Example : qmake.exe search binaries to original install path, how can I change/redefine it ?

Thanks.

Edit : I finally found this patch to apply to Qt :

• http://ftp-developpez.com/qt/binaires/win32/patcher/QtPatcher.7z
• http://ftp-developpez.com/qt/binaires/win32/patcher/QtPatche_src.7z

Solution 1

I was looking into this and found a way that works (in qt 4.7.2) by customizing qt with a qt.conf file.

In my case, I added a qt4-4.7.2/bin/qt.conf (I think it must be in the same place as the qmake executable)

With the following contents:

[Paths]
Prefix = c:/my_path/to/qt4-4.7.2

and the qmake -query started returning the proper paths!

See: http://qt-project.org/doc/qt-5.0/qtdoc/qt-conf.html for more details

Solution 2

You can change path to binaries and many other hardcoded paths in qmake using qmake -set command.
See Configuring qmake's Environment for details.

Solution 3

I can answer it for windows, not so sure about others. Remove the path variables if any present in the environmental variable PATH.

In Qt-Creator goto,

Tools->Options->Qt4->Qt Versions

In the right hand side area, you will find Auto- Detected and Manual. Under Manual add a new entry by clicking the + symbol in the far right. Specify the QMake location by clicking Browse . Change the Default Qt Version to your newly specified Version. Of course, you have to re -build the application. Hope that it helps.

Solution 4

On Unix/Linux:

You can also use LD_LIBRARY_PATH+PATH for workarounds. But still, some defaults are hardcoded in the code, yes. A rebuild is a must.

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Comments

[ICTMitchell]

FWIW, since Vista, this is possible since in Windows too.

[Martin Beckett]

But they don't have all the properties of links on unix, can you even link directories?

[HaMster]

Also fixes things for me on Win8 with Qt 4.8.1

[Tim Meyer]

Not sure if this works for older versions, but in Qt 5.5.0 you can do Prefix=.., which allows moving the Qt installation pretty much anywhere. Additionally, when translating e.g. QtCommercialCharts, I had to set the QMAKEFEATURES environment variable to %QTDIR%\mkspecs\features" so qt_build_config is found.

[zzy]

I'm using 5.5 and Prefix=./../ make it work for any path.