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Can't compile project using CLion and CMake

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qt6clion-idecmakeerror
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  • M 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
    
    jsulmJ Offline
    jsulmJ Offline
    jsulm
    Lifetime Qt Champion
    wrote on last edited by
    #15

    @mingvv Did you try a complete rebuild?

    https://forum.qt.io/topic/113070/qt-code-of-conduct

    M 1 Reply Last reply
    0
    • jsulmJ jsulm

      @mingvv Did you try a complete rebuild?

      M Offline
      M Offline
      mingvv
      wrote on last edited by
      #16

      @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?

      1 Reply Last reply
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      • Christian EhrlicherC Offline
        Christian EhrlicherC Offline
        Christian Ehrlicher
        Lifetime Qt Champion
        wrote on last edited by
        #17

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

        Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
        Visit the Qt Academy at https://academy.qt.io/catalog

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        • M Offline
          M Offline
          mingvv
          wrote on last edited by
          #18

          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?

          1 Reply Last reply
          1
          • Christian EhrlicherC Offline
            Christian EhrlicherC Offline
            Christian Ehrlicher
            Lifetime Qt Champion
            wrote on last edited by
            #19

            @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.

            Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
            Visit the Qt Academy at https://academy.qt.io/catalog

            M 1 Reply Last reply
            0
            • Christian EhrlicherC 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.

              M Offline
              M Offline
              mingvv
              wrote on last edited by
              #20

              @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

              1 Reply Last reply
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              • Christian EhrlicherC Offline
                Christian EhrlicherC Offline
                Christian Ehrlicher
                Lifetime Qt Champion
                wrote on last edited by
                #21

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

                Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                Visit the Qt Academy at https://academy.qt.io/catalog

                1 Reply Last reply
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                • M Offline
                  M Offline
                  mingvv
                  wrote on last edited by
                  #22

                  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.

                  1 Reply Last reply
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                  • M Offline
                    M Offline
                    mingvv
                    wrote on last edited by mingvv
                    #23

                    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?

                    1 Reply Last reply
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                    • nageshN Offline
                      nageshN Offline
                      nagesh
                      wrote on last edited by
                      #24

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

                      M 1 Reply Last reply
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                      • nageshN nagesh

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

                        M Offline
                        M Offline
                        mingvv
                        wrote on last edited by
                        #25

                        @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?)?

                        jsulmJ 1 Reply Last reply
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                        • M 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?)?

                          jsulmJ Offline
                          jsulmJ Offline
                          jsulm
                          Lifetime Qt Champion
                          wrote on last edited by
                          #26

                          @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.

                          https://forum.qt.io/topic/113070/qt-code-of-conduct

                          M 1 Reply Last reply
                          0
                          • jsulmJ 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.

                            M Offline
                            M Offline
                            mingvv
                            wrote on last edited by
                            #27

                            @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?

                            jsulmJ 1 Reply Last reply
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                            • M 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?

                              jsulmJ Offline
                              jsulmJ Offline
                              jsulm
                              Lifetime Qt Champion
                              wrote on last edited by
                              #28

                              @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?

                              https://forum.qt.io/topic/113070/qt-code-of-conduct

                              M 1 Reply Last reply
                              0
                              • jsulmJ 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?

                                M Offline
                                M Offline
                                mingvv
                                wrote on last edited by
                                #29

                                @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

                                jsulmJ 1 Reply Last reply
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                                • M 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

                                  jsulmJ Offline
                                  jsulmJ Offline
                                  jsulm
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #30

                                  @mingvv I did not yet install Qt6, maybe something is different there.

                                  https://forum.qt.io/topic/113070/qt-code-of-conduct

                                  M 1 Reply Last reply
                                  0
                                  • jsulmJ jsulm

                                    @mingvv I did not yet install Qt6, maybe something is different there.

                                    M Offline
                                    M Offline
                                    mingvv
                                    wrote on last edited by
                                    #31

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

                                    @mingvv I did not yet install Qt6, maybe something is different there.

                                    You’re using version 5? Honestly, I don’t know why I put 6. I decided that the new and apparently more active development of it. Are there any significant differences? Otherwise, I would have reassigned to 5.

                                    jsulmJ 1 Reply Last reply
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                                    • M mingvv

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

                                      @mingvv I did not yet install Qt6, maybe something is different there.

                                      You’re using version 5? Honestly, I don’t know why I put 6. I decided that the new and apparently more active development of it. Are there any significant differences? Otherwise, I would have reassigned to 5.

                                      jsulmJ Offline
                                      jsulmJ Offline
                                      jsulm
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #32

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

                                      Are there any significant differences?

                                      Yes, currently not all Qt modules are available in Qt6 and will be added in later Qt6 releases. It is save to stay with Qt5 for now.

                                      https://forum.qt.io/topic/113070/qt-code-of-conduct

                                      M 1 Reply Last reply
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                                      • jsulmJ jsulm

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

                                        Are there any significant differences?

                                        Yes, currently not all Qt modules are available in Qt6 and will be added in later Qt6 releases. It is save to stay with Qt5 for now.

                                        M Offline
                                        M Offline
                                        mingvv
                                        wrote on last edited by
                                        #33

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

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

                                        Are there any significant differences?

                                        Yes, currently not all Qt modules are available in Qt6 and will be added in later Qt6 releases. It is save to stay with Qt5 for now.

                                        I reinstalled to version 5. Still debug dlls are only for MSVC... Are you sure there’s no need to add an extra component in installer or something else? Otherwise I don’t know what it is and why it don't install debug libraries for MinGW.

                                        1 Reply Last reply
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                                        • kkoehneK Offline
                                          kkoehneK Offline
                                          kkoehne
                                          Moderators
                                          wrote on last edited by
                                          #34

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

                                          I reinstalled to version 5. Still debug dlls are only for MSVC... Are you sure there’s no need to add an extra component in installer or something else? Otherwise I don’t know what it is and why it don't install debug libraries for MinGW.

                                          We don't ship pure debug libraries anymore for MinGW, since Qt 5.15.0 (IIRC). Instead, there's a package with additional debug information for the release binaries. This is the same approach we're actually using also on macOS and Linux; it's only Windows MSVC where you need completely different builds (due to the different MSVC runtimes used for debug and release builds).

                                          Director R&D, The Qt Company

                                          M 1 Reply Last reply
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