Project ERROR: Cannot run compiler 'g++'

  • Hi,
    I just reinstalled Qt and Qt creator on a windows 10 machine and am having this error. I tried to spend some time on it and could not find a solution. I am hoping someone smarter than me can provide some insight on how to solve the problem. Qt Version 5.11.

    Project ERROR: Cannot run compiler 'g++'. Output:
    Maybe you forgot to setup the environment?
    11:00:09: The process "C:\Qt\5.11.0\mingw53_32\bin\qmake.exe" exited with code 3.
    Error while building/deploying project 6528Test (kit: MyKit)
    When executing step "qmake"

    I am using mingw 5.3 and used the online installer, just like every time before. Also when I load projects at the start I get this error, and nothing but the .pro file is loaded.

    Running Windows Runtime device detection.
    No winrtrunner.exe found.

    What is interesting is at one point I had Qt installed and running, and then suddenly it was removed from the machine - since then I am having this issue. I did add the mingw compiler directory to the windows Path variable and can call it freely in the cmd prompt.

    g++ --version
    g++ (i686-posix-dwarf-rev0, Built by MinGW-W64 project) 5.3.0
    Copyright (C) 2015 Free Software Foundation, Inc.
    This is free software; see the source for copying conditions.  There is NO

    I have looked and looked for awhile and tried a few things that I see but everyone's reponse on problems is that MSVC++ compiler is missing but I am using mingw not MSVC++.

    Here's MyKiy:

  • Qt Champions 2018

    @MrShawn Did you try to delete the *.pro.user file?

  • I just tried that, no luck still got the same errors.

  • Lifetime Qt Champion


    Did you check the PATH environment variable in the Build part of the Project panel ?

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