How to use bullseye with Qt( MinGW )?

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I have a project in Qt which consists of the set of projects. Projects is building via MinGW and it does not create any .cov file. I installed bullseye and enabled coverage build but it still does not create *.con file if I try to set path variable like

C:\Program Files\BullseyeCoverage\bin;%PATH%

the build is constantly failing I always get

gcc: CreateProcess: No such file or directory

The file to build whole project is following :

    d:\QtSDK\Desktop\Qt\4.7.4\mingw\bin\qmake.exe Simulator.pro -r -spec win32-g++ "CONFIG+=release"
PATH=D:\QtSDK\mingw\bin\;%PATH%
D:\QtSDK\mingw\bin\mingw32-make -f ./Makefile 

How can I measure code coverage? Please help.

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unresolved_external On BEST ANSWER

If somebody interested in this question - I already figured it out. Here is a solution - To set bullseye interceptors before your gcc compiler just replace variables

QMAKE_CC = %Bullseye gcc path%
QMAKE_CXX = %Bullseye g++ path%

This variable should be defined in *.pro file or in gcc config file, which is located in

%QTSDKPath%\Desktop\Qt\4.7.4\mingw\mkspecs\win32-g++\ // if you are using gcc from win32

You also need to set environment variable:

BULLSEYE_PATH=%PATH TO REAL COMPILER%