Unable to link CLion to QT On Windows 10 - c++

Question

Im trying to link Qt Creator to Clion so i can use it for creating GUI elements but the only information I was able to find on doing this was this thread
How to configure CLion IDE for Qt Framework?
I tried to follow this as closely as possible but one of the major differences is that on windows there is no clang_64 file instead it is msvc2017_64 and that is what seems to be showing up in the error im getting.
My CmakeLists.txt
cmake_minimum_required(VERSION 3.5)
project(helloqt)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
set(SOURCE_FILES main.cpp)
find_package(Qt5Widgets REQUIRED)
add_executable(helloqt ${SOURCE_FILES})
target_link_libraries(helloqt Qt5::Widgets)
my main.cpp
#include <QApplication>
#include <QDebug>
using namespace std;
int main() {
qDebug() << QT_VERSION_STR;
return 1;
}
under Settings>Build, Execution, Deployment > CMake my Cmake Options has the path
-DCMAKE_PREFIX_PATH=C:/Qt/5.12.1/msvc2017_64/lib/cmake
and it results in this error which I have not been able to find a fix to.
"C:\Program Files\JetBrains\CLion 2018.3.4\bin\cmake\win\bin\cmake.exe" --build C:\Users\Uncorropto\CLionProjects\helloqt\cmake-build-debug --target helloqt --
Scanning dependencies of target helloqt
[ 50%] Building CXX object CMakeFiles/helloqt.dir/main.cpp.obj
main.cpp
[100%] Linking CXX executable helloqt.exe
LINK Pass 1: command "C:\PROGRA~2\MIB055~1\2017\COMMUN~1\VC\Tools\MSVC\1414~1.264\bin\Hostx86\x86\link.exe /nologo #CMakeFiles\helloqt.dir\objects1.rsp /out:helloqt.exe /implib:helloqt.lib /pdb:C:\Users\Uncorropto\CLionProjects\helloqt\cmake-build-debug\helloqt.pdb /version:0.0 /machine:X86 /debug /INCREMENTAL /subsystem:console C:\Qt\5.12.1\msvc2017_64\lib\Qt5Widgetsd.lib C:\Qt\5.12.1\msvc2017_64\lib\Qt5Guid.lib C:\Qt\5.12.1\msvc2017_64\lib\Qt5Cored.lib kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib /MANIFEST /MANIFESTFILE:CMakeFiles\helloqt.dir/intermediate.manifest CMakeFiles\helloqt.dir/manifest.res" failed (exit code 1120) with the following output:
main.cpp.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall QMessageLogger::QMessageLogger(char const *,int,char const *)" (__imp_??0QMessageLogger##QAE#PBDH0#Z) referenced in function _main
main.cpp.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: class QDebug __thiscall QMessageLogger::debug(void)const " (__imp_?debug#QMessageLogger##QBE?AVQDebug##XZ) referenced in function _main
main.cpp.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall QDebug::~QDebug(void)" (__imp_??1QDebug##QAE#XZ) referenced in function _main
main.cpp.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: class QDebug & __thiscall QDebug::operator<<(char const *)" (__imp_??6QDebug##QAEAAV0#PBD#Z) referenced in function _main
C:\Qt\5.12.1\msvc2017_64\lib\Qt5Widgetsd.lib : warning LNK4272: library machine type 'x64' conflicts with target machine type 'x86'
C:\Qt\5.12.1\msvc2017_64\lib\Qt5Guid.lib : warning LNK4272: library machine type 'x64' conflicts with target machine type 'x86'
C:\Qt\5.12.1\msvc2017_64\lib\Qt5Cored.lib : warning LNK4272: library machine type 'x64' conflicts with target machine type 'x86'
helloqt.exe : fatal error LNK1120: 4 unresolved externals
NMAKE : fatal error U1077: '"C:\Program Files\JetBrains\CLion 2018.3.4\bin\cmake\win\bin\cmake.exe"' : return code '0xffffffff'
Stop.
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\bin\HostX86\x86\nmake.exe"' : return code '0x2'
Stop.
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\bin\HostX86\x86\nmake.exe"' : return code '0x2'
Stop.
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\bin\HostX86\x86\nmake.exe"' : return code '0x2'
Stop.

Answer 1

It can't find symbol like QMessageLogger which is part of Qt Core. Note you have used qDebug() which refers to this symbols!
Conclusion is simple add this to your CMakeLists.txt:
find_package(Qt5Core REQUIRED) # this might be not needed
target_link_libraries(helloqt Qt5::Widgets Qt5::Core)
Offtopic: trash this:
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
since it doesn't do anything.

Answer 2

Try this under project(helloqt):
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTOUIC ON)