Can't compile project using CLion and CMake

[mingvv]

@jsulm Yes, but using QtCreator I can simply build and launch the project during the development phase. With other IDE to build Qt I cannot. So I’m not sure if this windeployqt.exe is what I need. Maybe I just don’t understand why I need to... But my current goal is simply to build a project using at least Visual Studio.

[jsulm]

@mingvv said in Can't compile project using CLion and CMake:

With other IDE to build Qt I cannot

OK, then this is indeed another issue.
If you're using Visual Studio then this line is wrong:

set(CMAKE_PREFIX_PATH D:/Qt/6.0.2/mingw81_64/lib/cmake)

It should point to Qt for Visual Studio, not for MinGW.

[mingvv]

@jsulm said in Can't compile project using CLion and CMake:

@mingvv said in Can't compile project using CLion and CMake:

With other IDE to build Qt I cannot

OK, then this is indeed another issue.
If you're using Visual Studio then this line is wrong:

set(CMAKE_PREFIX_PATH D:/Qt/6.0.2/mingw81_64/lib/cmake)

It should point to Qt for Visual Studio, not for MinGW.

I only have this folder. Using MaintenanceTool.exe I also don't see separate components for MSVC.

I used CMake GUI app to generate projects and solution (.sln), but while trying to compile I have 18 errors in library files. Is that why I have MinGW in CMake?

[jsulm]

@mingvv said in Can't compile project using CLion and CMake:

Using MaintenanceTool.exe I also don't see separate components for MSVC

You should. You could try to reinstall Qt.

[mingvv]

@jsulm
Indeed, it has now been possible to install the MSVC version. I have upgraded CMake, but this has not corrected the bugs in the project build:

2>main.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __cdecl QString::~QString(void)" (__imp_??1QString@@QEAA@XZ) referenced in function main
2>main.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __cdecl QString::QString(char const *)" (__imp_??0QString@@QEAA@PEBD@Z) referenced in function main
2>main.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __cdecl QApplication::QApplication(int &,char * *,int)" (__imp_??0QApplication@@QEAA@AEAHPEAPEADH@Z) referenced in function main
2>main.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: virtual __cdecl QApplication::~QApplication(void)" (__imp_??1QApplication@@UEAA@XZ) referenced in function main
2>main.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: static int __cdecl QApplication::exec(void)" (__imp_?exec@QApplication@@SAHXZ) referenced in function main
2>main.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __cdecl QWidget::show(void)" (__imp_?show@QWidget@@QEAAXXZ) referenced in function main
2>main.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __cdecl QWidget::resize(int,int)" (__imp_?resize@QWidget@@QEAAXHH@Z) referenced in function main
2>main.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __cdecl QPushButton::QPushButton(class QString const &,class QWidget *)" (__imp_??0QPushButton@@QEAA@AEBVQString@@PEAVQWidget@@@Z) referenced in function main
2>main.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: virtual __cdecl QPushButton::~QPushButton(void)" (__imp_??1QPushButton@@UEAA@XZ) referenced in function main
2>main.obj : error LNK2001: unresolved external symbol "public: virtual __cdecl QApplication::~QApplication(void)" (??1QApplication@@UEAA@XZ)
2>main.obj : error LNK2001: unresolved external symbol "public: virtual __cdecl QPushButton::~QPushButton(void)" (??1QPushButton@@UEAA@XZ)
2>main.obj : error LNK2001: unresolved external symbol "public: __cdecl QString::~QString(void)" (??1QString@@QEAA@XZ)
2>D:\QSnake\RelWithDebInfo\QSnake.exe : fatal error LNK1120: 12 unresolved externals

[jsulm]

@mingvv Did you try a complete rebuild?

[mingvv]

@jsulm Yes, I cleaned solution and rebuilt. Maybe I generated it wrong with CMake? Is there any build guide for Visual Studio or any hidden features?

[Christian Ehrlicher]

And make sure that the msvc libs are used during linking.

[mingvv]

Maybe I should add project additional include directories?

@Christian-Ehrlicher said in Can't compile project using CLion and CMake:

And make sure that the msvc libs are used during linking.

How can I check it? I guess I have default settings, because I didn't change them.

P.S. Maybe you know, after how many messages can I post more than once in 10 minutes?

[Christian Ehrlicher]

@mingvv said in Can't compile project using CLion and CMake:

How can I check it?

Since you've a msvc project take a look in the linker options. Or use cmake-gui to see the CMake values.

[mingvv]

@Christian-Ehrlicher If I correctly understood you, I use MSVC linker:
CMAKE_LINKER - C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.28.29910/bin/Hostx64/x64/link.exe

[Christian Ehrlicher]

I don't care about the linker but about the input for it - do you link against the QtWidget dll for msvc?

[mingvv]

Finally solved the problem... The reason turned out to be very stupid - CMake was not specified by MSVC, but by MinGW library and the wrong solution was generated.
However, in debug version still does not work (now builds only in release) because dll files with suffix "d" are not included. Should they be installed as separate components? They’re not in the bin directory where exist release dlls.

[mingvv]

I found that I have debug dll files in the MSVC directory, but in the MinGW directory there are only release dlls. This causes bugs in debugging. Do you have files with the "d" suffix in the MinGW directory?

[nagesh]

@mingvv mingw bin directory is having both release and debug version (with d suffix) of dlls.

[mingvv]

@nagesh said in Can't compile project using CLion and CMake:

@mingvv mingw bin directory is having both release and debug version (with d suffix) of dlls.

Thank you for the answer!
Did you install them separately (I mean, there is a separate item in the installer? If so, what is it called?)?

[jsulm]

@mingvv said in Can't compile project using CLion and CMake:

Did you install them separately

Do you mean release and debug? No, those are both installed by default.

[mingvv]

@jsulm said in Can't compile project using CLion and CMake:

@mingvv said in Can't compile project using CLion and CMake:

Did you install them separately

Do you mean release and debug? No, those are both installed by default.

Yes. I reinstalled Qt, but debug files never appeared for MinGW (with MSVC all OK). "Qt Debug Information" is not that?

[jsulm]

@mingvv said in Can't compile project using CLion and CMake:

but debug files never appeared for MinGW

That's strange. On my machine I have both. How did you install Qt and what version?

[mingvv]

@jsulm said in Can't compile project using CLion and CMake:

@mingvv said in Can't compile project using CLion and CMake:

but debug files never appeared for MinGW

That's strange. On my machine I have both. How did you install Qt and what version?

Using Qt Online Installer for Windows I installed the default set for Qt 6 as well as an additional component for MSVC.
What I have now (as it looks in MaintenanceTool):
*) Qt -> Qt 6.0.2 -> MSVC 2019 64-bit
*) Qt -> Qt 6.0.2 -> MinGW 8.1.0 64-bit
*) Qt -> Developer and Designer Tool -> Qt Creator 4.14.1 CDB Debugger Support
*) Qt -> Developer and Designer Tool -> Debugging Tools for Windows
*) Qt -> Developer and Designer Tool -> MinGW 8.1.0 64-bit
*) Qt -> Developer and Designer Tool -> CMake 3.19.2 64-bit
*) Qt -> Developer and Designer Tool -> Ninja 1.10.0