Can't compile project using CLion and CMake
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@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@mingvv Did you try a complete rebuild?
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And make sure that the msvc libs are used during linking.
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wrote on 18 Mar 2021, 09:58 last edited by
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?
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@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.
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@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.
wrote on 18 Mar 2021, 10:14 last edited by@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 -
I don't care about the linker but about the input for it - do you link against the QtWidget dll for msvc?
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wrote on 18 Mar 2021, 10:47 last edited by
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. -
wrote on 18 Mar 2021, 15:44 last edited by 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?
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@mingvv mingw bin directory is having both release and debug version (with d suffix) of dlls.
wrote on 19 Mar 2021, 07:31 last edited by@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?)? -
@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?)?@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.
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@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.
wrote on 19 Mar 2021, 07:37 last edited by@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?
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@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?
@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?
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@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?
wrote on 19 Mar 2021, 08:06 last edited by@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 -
@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@mingvv I did not yet install Qt6, maybe something is different there.
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wrote on 19 Mar 2021, 08:31 last edited by
@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.
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@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.
@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.
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@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.
wrote on 19 Mar 2021, 12:12 last edited by@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.
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@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).
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