[Solved] Linker error while building WITH_QT [closed]

asked 2015-05-08 13:20:00 -0600

viktor gravatar image

updated 2015-05-08 20:41:03 -0600

Hi folks,

I'm currently trying to build revision a31b29308f with the WITH_QT CMake flag on a Windows 7 x64 machine.

I use Microsoft Visual Studio 2012 (VS11) compiler and the qt-opensource-windows-x86-msvc2012_opengl-5.4.1 package. The QT install folder is added to the path. Once I generate the cmake files i recieve a couple of 'Policy CMP0020 not set' warnings. So far so good (I've pasted the cmake log at http://pastebin.com/3kFAhzns). When I move onto building OpenCV I start to receive linker errors that look like this:

LINK : fatal error LNK1104: cannot open file '..\..\lib\Debug\opencv_highgui300d.lib'
(I've pasted the entire log here: http://pastebin.com/PL3wq6EN)

No wonder, when the error occurs, there's no such *.lib file present!
But when I don't use the WITH_QT flag, everything works fine.
Any suggestions why?

Many thanks, best regards,

Building Qt from source instead of using pre-build x86 ones resolved the issue.

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Closed for the following reason the question is answered, right answer was accepted by StevenPuttemans
close date 2015-05-09 06:22:02.168568



look at line 832 of your pastebin. you're building for x64 but linking x86 qt libs.

(opencv_highgui300d.lib was not built because of this)

berak gravatar imageberak ( 2015-05-08 13:28:40 -0600 )edit

Darn it, must have missed that one.. Building Qt libs from source solved the issue. Many thanks for your help, berak!

viktor gravatar imageviktor ( 2015-05-08 20:39:00 -0600 )edit