unrecognized command line option '-Zc:__cplusplus' and unrecognized command line option '-permissive-'

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I am trying to run and debug Qt6 widget application in clion. I tried the things that u would get when do a simple search but no success. Recently my friend told my to do this : Add "C:\Qt\Tools\mingw810_64" to toolchain environment like this : enter image description here

now when I create a Qt widget project like this :

enter image description here

I get these error :

Problems were encountered while collecting compiler information:
  g++.exe: error: unrecognized command line option '-Zc:__cplusplus'
  g++.exe: error: unrecognized command line option '-permissive-'; did you mean '-fpermissive'?

What should I do now ? Why doesn't it recognize these options ? I cannot change g++.exe file (or can I?) What can do about it?

I have been struggling to manage to run and debugg Qt6 project on clion the past few weeks.

God bless anyone who help me to do this. Please Help!

clion mingw qt c++
1 Answers

The problem is that you use MSVC-build of Qt and not the MinGW one. Update your CMakeLists.txt file:

set(CMAKE_PREFIX_PATH $ENV{QTDIR})

the environment variable QTDIR is set to Qt MinGW path (e.g. D:\Qt\6.2.3\mingw_64).

Don't forget to add the corresponding directory bin (%QTDIR%\bin) to the path environment variable.

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