Error when compiling OpenCV for Qt

Question

In order to use OpenCV in Qt, I have to compile it with MinGW by cmake.

Software are the following:

• Qt 5.4.0
• Opencv 2.4.11
• CMake 3.2.2
• MinGW version unknown, GCC 4.8.1

A fatal error occurred when I make file and I have no idea how to solve it at all.

[ 29%] Automatic moc for target opencv_highgui
Generating moc_window_QT.cpp
Exit code 0xc000007b

AUTOGEN: error: process for C:/opencvbuild/modules/highgui/moc_window_QT.cpp failed:
Exit code 0xc000007b

moc failed...
modules\highgui\CMakeFiles\opencv_highgui_automoc.dir\build.make:48: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui_automoc' failed
mingw32-make[2]: *** [modules/highgui/CMakeFiles/opencv_highgui_automoc] Error 1

CMakeFiles\Makefile2:2066: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui_automoc.dir/all' failed
mingw32-make[1]: *** [modules/highgui/CMakeFiles/opencv_highgui_automoc.dir/all] Error 2
Makefile:145: recipe for target 'all' failed
mingw32-make: *** [all] Error 2

These messages are shown in cmd.

Then I revised CMakeLists.txt, SET(CMAKE_AUTOMOC OFF)

modules\highgui\CMakeFiles\opencv_highgui_automoc.dir\build.make:64: recipe for target 'modules/highgui/qrc_window_QT.cpp' failed

Does anybody know a solution?

Answer 1

2 items to try.

1. Try running make with VERBOSE=1 to increase the output on the makefile. That should give you a better idea of what is wrong.

2. Try running with cmake-gui , then turn on advanced mode to check out what CMake found for the different Qt5 dependencies. On Mac, I install the latest Qt to my home directory, causing me to have to manually set variables. This is what it looks like for me.

Hopefully this provides some useful information.