undefined reference to `sm3_digest'

[JonB]

@hhhl01
Your .pro file shows you have set the INCLUDEPATH, that will have allowed whatever .h you include to declare sm3_digest() correctly so that you do not get a compile-time error.

Your LIBS line will have allowed the linker to find GMSSL/lib/libgmssl.a to link against. But it seems it did not find a definition of sm3_digest() there. Either that symbol is not publicly defined there, or you need another library perhaps as well, or it did not find that file. I'm not sure whether in the latter case (library not found) you would have received an error message from the linker about the -lgmssl argument.

Check your documentation, check whether the library file exists in the right place, check that the library you have is indeed a 32-bit build (won't work if it's 64-bit). You can always test the compiling/linking outside of Qt to verify it has nothing to do with Qt.

[hhhl01]

@JonB Thank you for your reply. I checked and found that GmSSL is built on standard 64-bit systems, but at the same time, it also supports 32-bit systems. Will this have any impact? At the same time, this library uses the C language standard. Will it have any impact if I call it directly in the cpp file?Looking forward to your reply, thank you!

[SGaist]

Hi,

For which architecture are you building ?
You can't mix and match 64 and 32 bit libraries when building.

[mvuori]

If that library is compiled as C, you may need to wrap its include line with:
extern "C" {
#include <yourheader .h>
}

[hhhl01]

@SGaist Hello, I am building a project based on the windows platform. I am a little confused. Why does the library have to be 32-bit?

[hhhl01]

@mvuori extern "C" {
#include <gmssl/sm2.h> //Public and private key encryption and decryption
#include <gmssl/sm3.h> //Text hash value
#include <gmssl/sm4.h> //Symmetric key encryption and decryption
}
I've changed it to this format, but it still doesn't work.

[JonB]

@hhhl01 said in undefined reference to &#x60;sm3_digest':

Why does the library have to be 32-bit?

It gets a bit complicated! Your actual Windows is doubtless 64-bit. That can run either 64- or 32-bit applications. Programs or libraries are compiled as either 64- or 32-bit. You cannot mix any 64- and 32-bit stuff within any one application, that and everything it links with must all be one or the other.

Your pasted error message shows that you are building your Qt application as 32-bit (...MinGW_32bit-Debug...). Somewhere you elected to do that. That means it will only link successfully against libraries also built 32-bit. If your gmssl has actually been built as 64-bit it's not going to work.

found that GmSSL is built on standard 64-bit systems, but at the same time, it also supports 32-bit systems

I'm not sure exactly what that means. Let's put it aside for now.

Start by looking inside your GMSSL\lib folder. You are looking for a file named libgmssl.a. Do you find that? If so, exactly where? If perchance you do not find that but instead a .lib file named gmssl.lib that would indicate it has been compiled by MSVC and you won't be able to use MInGW. Otherwise if you do have a libgmssl.a we need to know whether it is 32- or 64-bit. If the latter you would have to change to compiling your own Qt program for 64-bit in order to link with it.

[hhhl01]

@JonB Thanks for your reply, I seem to understand what you mean. I just checked that there is only a .lib file named gmssl.lib under GMSSL\lib, which is the library linked to my .pro file. The libgmssl.a file was not found, so the solution is to compile the GMSSL library into 32-bit using mingw? I'm not sure if this is a good approach.

[JonB]

@hhhl01 said in undefined reference to &#x60;sm3_digest':

that there is only a .lib file named gmssl.lib

The libgmssl.a file was not found

so the solution is to compile the GMSSL library into 32-bit using mingw?

gmssl.lib means that was compiled with MSVC. You cannot use that to link against anything of yours compiled with MinGW, regardless of bit-ness. You have 2 choices:

• If gmssl.lib was supplied to you from whatever the "GMSSL" package is, and you want to use it, you will have to change over to using MSVC instead of MinGW for all your application code you write. You will still have to discover whether the .lib file is 32- or 64-bit and compile your stuff with MSVC correspondingly.

• If you compile the GMSSL sources yourself you can recompile with MinGW (again, correct 32- or 64-bit for whatever you intend to compile your Qt stuff as), producing a libgmssl.a this time, and you will be able to link against that for your stuff compiled with MinGW. You may find that the GMSSL sources can only be compiled with MSVC, not written to allow MinGW: if so you will have to abandon MinGW and do it and your stuff all with MSVC instead.

The instructions for GMSSL really should document all this.

NOTE:
I don't use Windows or MSVC/MinGW. The above is pretty close to correct. The one thing I am not 100% certain about: if, and only if, GMSSL is C only and no C++ it might be that you can link against a generated .lib file. I say this because I think some Windows system libraries are C-only, are compiled with MSVC and have a .lib extension yet have to be acceptable to MinGW. If that is your route you would have to await someone who knows about this specific area.

P.S.
In http://gmssl.org/docs/install.html my limited knowledge of Chinese ;-) indicates it is intended to be built with MSVC/Visual Studio. What evidence do you have it will ever compile/work with MinGW?

[hhhl01]

@JonB Thank you for answering so thoughtfully. I will try the method you proposed to try to solve the problem. If there are any results, I will reply to you later. Thank you again!

[hhhl01]

@JonB said in undefined reference to &#x60;sm3_digest':

What evidence do you have it will ever compile/work with MinGW?

There is no evidence yet, I am just wondering if it is possible, but it seems to be very troublesome to do so.

[hhhl01]

@JonB Sorry it took so long to get back to you.I still haven't been able to solve this problem. I replaced the mingw 32-bit compiler with msvc 64-bit, but it still can't link to the library correctly.

The Chinese meaning here is:
upgrade_protocol.obj : error LNK2019: unresolved external symbol sm3_digest referenced in function "private: class std::vector<unsigned char, class std::allocator<unsigned char>> __cdecl UpgradeProtocol::sm3Hash(class std::vector<unsigned char, class std::allocator<unsigned char>> const &)" (?sm3Hash@UpgradeProtocol@@AEAA?AV?$vector@EV?$allocator@E@std@@@std@@AEBV23@@Z)

I don't know if it's the same problem as the one I encountered before. I'm thinking if it's a library problem.Looking forward to your reply, thank you.

[hhhl01]

@JonB I also need to explain that my current development environment is the windows platform.

And the external library I linked to is 64-bit.

I think there is no problem with my build environment, so is it possible that the Windows platform is causing this error?

[jsulm]

@hhhl01 Please post you current pro file and also the output of the linker during the build. And please post text, not pictures.

[JonB]

@hhhl01
Maybe @jsulm can help you.

But I have to say: this doesn't seem to be anything to do with Qt, nobody knows what GMSSL is all about, there are basically no hits on the web for sm3_digest. This is really down to you to find out what is required to build it correctly from its documentation.

[hhhl01]

@jsulm Hello.Thanks Hello.Thanks for your reply. This is my .pro file.

* * * * ```
#-------------------------------------------------
#
# Project created by QtCreator 2024-07-04T18:09:10
#
#-------------------------------------------------

CONFIG += c++11

QT       += core gui widgets serialport network

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = ClientPro
TEMPLATE = app

# The following define makes your compiler emit warnings if you use
# any feature of Qt which has been marked as deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0


SOURCES += \
        main.cpp \
        widget.cpp \
    uart_process.cpp \
    lan_process.cpp \
    process_thread.cpp \
    upgrade_protocol.cpp

HEADERS += \
        widget.h \
    uart_process.h \
    lan_process.h \
    process_thread.h \
    upgrade_protocol.h

FORMS += \
        widget.ui


msvc {
    QMAKE_CFLAGS += /utf-8
    QMAKE_CXXFLAGS += /utf-8
}

win32:CONFIG(release, debug|release): LIBS += -L$$PWD/../../GmSSL/release/gmssl.lib
else:win32:CONFIG(debug, debug|release): LIBS += -L$$PWD/../../GmSSL/debug/gmssl.lib
else:unix:!macx: LIBS += -L$$PWD/../../GmSSL/gmssl.lib

INCLUDEPATH += $$PWD/../../GmSSL/include
DEPENDPATH += $$PWD/../../GmSSL/include

And below is the output of the linker.

10:04:40: 为项目ClientPro执行步骤 ...
10:04:40: 正在启动 "D:\qt\Tools\QtCreator\bin\jom\jom.exe" clean

	D:\qt\Tools\QtCreator\bin\jom\jom.exe -f Makefile.Debug clean
	del debug\moc_predefs.h
找不到 D:\qtPro\ClientPro\debug\moc_predefs.h
	del debug\moc_widget.cpp debug\moc_process_thread.cpp debug\moc_upgrade_protocol.cpp
	del ui_widget.h
找不到 D:\qtPro\ClientPro\debug\moc_widget.cpp
找不到 D:\qtPro\ClientPro\ui_widget.h
	del debug\main.obj debug\widget.obj debug\uart_process.obj debug\lan_process.obj debug\process_thread.obj debug\upgrade_protocol.obj debug\moc_widget.obj debug\moc_process_thread.obj debug\moc_upgrade_protocol.obj
找不到 D:\qtPro\ClientPro\debug\main.obj
	del debug\ClientPro.exp debug\ClientPro.vc.pdb debug\ClientPro.ilk debug\ClientPro.idb
找不到 D:\qtPro\ClientPro\debug\ClientPro.exp
	D:\qt\Tools\QtCreator\bin\jom\jom.exe -f Makefile.Release clean
	del release\moc_predefs.h
	del release\moc_widget.cpp release\moc_process_thread.cpp release\moc_upgrade_protocol.cpp
	del ui_widget.h
	del release\main.obj release\widget.obj release\uart_process.obj release\lan_process.obj release\process_thread.obj release\upgrade_protocol.obj release\moc_widget.obj release\moc_process_thread.obj release\moc_upgrade_protocol.obj
	del release\ClientPro.exp
找不到 D:\qtPro\ClientPro\release\moc_predefs.h
找不到 D:\qtPro\ClientPro\release\moc_widget.cpp
找不到 D:\qtPro\ClientPro\ui_widget.h
找不到 D:\qtPro\ClientPro\release\main.obj
找不到 D:\qtPro\ClientPro\release\ClientPro.exp
	del ClientPro.exp
找不到 D:\qtPro\ClientPro\ClientPro.exp
	del ClientPro.vc.pdb
找不到 D:\qtPro\ClientPro\ClientPro.vc.pdb
	del ClientPro.ilk
找不到 D:\qtPro\ClientPro\ClientPro.ilk
	del ClientPro.idb
找不到 D:\qtPro\ClientPro\ClientPro.idb
10:04:41: 进程"D:\qt\Tools\QtCreator\bin\jom\jom.exe"正常退出。
10:04:41: 正在启动 "C:\Program Files\msvc2017_64\bin\qmake.exe" D:\qtPro\ClientPro\ClientPro.pro -spec win32-msvc "CONFIG+=debug"

10:04:41: 进程"C:\Program Files\msvc2017_64\bin\qmake.exe"正常退出。
10:04:41: 正在启动 "D:\qt\Tools\QtCreator\bin\jom\jom.exe" -f D:/qtPro/ClientPro/Makefile qmake_all


jom 1.1.4 - empower your cores

10:04:41: 进程"D:\qt\Tools\QtCreator\bin\jom\jom.exe"正常退出。
10:04:41: 正在启动 "D:\qt\Tools\QtCreator\bin\jom\jom.exe" 

	D:\qt\Tools\QtCreator\bin\jom\jom.exe -f Makefile.Debug
	"C:\Program Files\msvc2017_64\bin\uic.exe" widget.ui -o ui_widget.h
widget.ui: Warning: The name 'layoutWidget' (QWidget) is already in use, defaulting to 'layoutWidget1'.
widget.ui: Warning: The name 'layoutWidget' (QWidget) is already in use, defaulting to 'layoutWidget2'.
	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding /utf-8 -Zi -MDd -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -EHsc /Fddebug\ClientPro.vc.pdb -DUNICODE -D_UNICODE -DWIN32 -DWIN64 -DQT_DEPRECATED_WARNINGS -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_SERIALPORT_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I..\..\GmSSL\include -I"C:\Program Files\msvc2017_64\include" -I"C:\Program Files\msvc2017_64\include\QtWidgets" -I"C:\Program Files\msvc2017_64\include\QtGui" -I"C:\Program Files\msvc2017_64\include\QtANGLE" -I"C:\Program Files\msvc2017_64\include\QtSerialPort" -I"C:\Program Files\msvc2017_64\include\QtNetwork" -I"C:\Program Files\msvc2017_64\include\QtCore" -Idebug -I. -I\include -I"C:\Program Files\msvc2017_64\mkspecs\win32-msvc" -Fodebug\ @C:\Users\21443\AppData\Local\Temp\main.obj.4208.0.jom
	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding /utf-8 -Zi -MDd -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -EHsc /Fddebug\ClientPro.vc.pdb -DUNICODE -D_UNICODE -DWIN32 -DWIN64 -DQT_DEPRECATED_WARNINGS -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_SERIALPORT_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I..\..\GmSSL\include -I"C:\Program Files\msvc2017_64\include" -I"C:\Program Files\msvc2017_64\include\QtWidgets" -I"C:\Program Files\msvc2017_64\include\QtGui" -I"C:\Program Files\msvc2017_64\include\QtANGLE" -I"C:\Program Files\msvc2017_64\include\QtSerialPort" -I"C:\Program Files\msvc2017_64\include\QtNetwork" -I"C:\Program Files\msvc2017_64\include\QtCore" -Idebug -I. -I\include -I"C:\Program Files\msvc2017_64\mkspecs\win32-msvc" -Fodebug\ @C:\Users\21443\AppData\Local\Temp\uart_process.obj.4208.15.jom
	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding /utf-8 -Zi -MDd -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -EHsc /Fddebug\ClientPro.vc.pdb -DUNICODE -D_UNICODE -DWIN32 -DWIN64 -DQT_DEPRECATED_WARNINGS -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_SERIALPORT_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I..\..\GmSSL\include -I"C:\Program Files\msvc2017_64\include" -I"C:\Program Files\msvc2017_64\include\QtWidgets" -I"C:\Program Files\msvc2017_64\include\QtGui" -I"C:\Program Files\msvc2017_64\include\QtANGLE" -I"C:\Program Files\msvc2017_64\include\QtSerialPort" -I"C:\Program Files\msvc2017_64\include\QtNetwork" -I"C:\Program Files\msvc2017_64\include\QtCore" -Idebug -I. -I\include -I"C:\Program Files\msvc2017_64\mkspecs\win32-msvc" -Fodebug\ @C:\Users\21443\AppData\Local\Temp\lan_process.obj.4208.15.jom
	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding /utf-8 -Zi -MDd -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -EHsc /Fddebug\ClientPro.vc.pdb -DUNICODE -D_UNICODE -DWIN32 -DWIN64 -DQT_DEPRECATED_WARNINGS -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_SERIALPORT_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I..\..\GmSSL\include -I"C:\Program Files\msvc2017_64\include" -I"C:\Program Files\msvc2017_64\include\QtWidgets" -I"C:\Program Files\msvc2017_64\include\QtGui" -I"C:\Program Files\msvc2017_64\include\QtANGLE" -I"C:\Program Files\msvc2017_64\include\QtSerialPort" -I"C:\Program Files\msvc2017_64\include\QtNetwork" -I"C:\Program Files\msvc2017_64\include\QtCore" -Idebug -I. -I\include -I"C:\Program Files\msvc2017_64\mkspecs\win32-msvc" -Fodebug\ @C:\Users\21443\AppData\Local\Temp\process_thread.obj.4208.31.jom
uart_process.cpp
lan_process.cpp
main.cpp
process_thread.cpp
	cl -Bx"C:\Program Files\msvc2017_64\bin\qmake.exe" -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding /utf-8 -Zi -MDd -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -E "C:\Program Files\msvc2017_64\mkspecs\features\data\dummy.cpp" 2>NUL >debug\moc_predefs.h
	"C:\Program Files\msvc2017_64\bin\moc.exe" -DUNICODE -D_UNICODE -DWIN32 -DWIN64 -DQT_DEPRECATED_WARNINGS -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_SERIALPORT_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB --compiler-flavor=msvc --include debug/moc_predefs.h -I"C:/Program Files/msvc2017_64/mkspecs/win32-msvc" -ID:/qtPro/ClientPro -ID:/GmSSL/include -I"C:/Program Files/msvc2017_64/include" -I"C:/Program Files/msvc2017_64/include/QtWidgets" -I"C:/Program Files/msvc2017_64/include/QtGui" -I"C:/Program Files/msvc2017_64/include/QtANGLE" -I"C:/Program Files/msvc2017_64/include/QtSerialPort" -I"C:/Program Files/msvc2017_64/include/QtNetwork" -I"C:/Program Files/msvc2017_64/include/QtCore" -I"C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.29.30133\ATLMFC\include" -I"C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.29.30133\include" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\ucrt" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\shared" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\um" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\winrt" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\cppwinrt" process_thread.h -o debug\moc_process_thread.cpp
	"C:\Program Files\msvc2017_64\bin\moc.exe" -DUNICODE -D_UNICODE -DWIN32 -DWIN64 -DQT_DEPRECATED_WARNINGS -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_SERIALPORT_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB --compiler-flavor=msvc --include debug/moc_predefs.h -I"C:/Program Files/msvc2017_64/mkspecs/win32-msvc" -ID:/qtPro/ClientPro -ID:/GmSSL/include -I"C:/Program Files/msvc2017_64/include" -I"C:/Program Files/msvc2017_64/include/QtWidgets" -I"C:/Program Files/msvc2017_64/include/QtGui" -I"C:/Program Files/msvc2017_64/include/QtANGLE" -I"C:/Program Files/msvc2017_64/include/QtSerialPort" -I"C:/Program Files/msvc2017_64/include/QtNetwork" -I"C:/Program Files/msvc2017_64/include/QtCore" -I"C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.29.30133\ATLMFC\include" -I"C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.29.30133\include" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\ucrt" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\shared" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\um" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\winrt" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\cppwinrt" upgrade_protocol.h -o debug\moc_upgrade_protocol.cpp
	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding /utf-8 -Zi -MDd -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -EHsc /Fddebug\ClientPro.vc.pdb -DUNICODE -D_UNICODE -DWIN32 -DWIN64 -DQT_DEPRECATED_WARNINGS -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_SERIALPORT_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I..\..\GmSSL\include -I"C:\Program Files\msvc2017_64\include" -I"C:\Program Files\msvc2017_64\include\QtWidgets" -I"C:\Program Files\msvc2017_64\include\QtGui" -I"C:\Program Files\msvc2017_64\include\QtANGLE" -I"C:\Program Files\msvc2017_64\include\QtSerialPort" -I"C:\Program Files\msvc2017_64\include\QtNetwork" -I"C:\Program Files\msvc2017_64\include\QtCore" -Idebug -I. -I\include -I"C:\Program Files\msvc2017_64\mkspecs\win32-msvc" -Fodebug\ @C:\Users\21443\AppData\Local\Temp\upgrade_protocol.obj.4208.31.jom
upgrade_protocol.cpp
	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding /utf-8 -Zi -MDd -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -EHsc /Fddebug\ClientPro.vc.pdb -DUNICODE -D_UNICODE -DWIN32 -DWIN64 -DQT_DEPRECATED_WARNINGS -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_SERIALPORT_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I..\..\GmSSL\include -I"C:\Program Files\msvc2017_64\include" -I"C:\Program Files\msvc2017_64\include\QtWidgets" -I"C:\Program Files\msvc2017_64\include\QtGui" -I"C:\Program Files\msvc2017_64\include\QtANGLE" -I"C:\Program Files\msvc2017_64\include\QtSerialPort" -I"C:\Program Files\msvc2017_64\include\QtNetwork" -I"C:\Program Files\msvc2017_64\include\QtCore" -Idebug -I. -I\include -I"C:\Program Files\msvc2017_64\mkspecs\win32-msvc" -Fodebug\ @C:\Users\21443\AppData\Local\Temp\widget.obj.4208.47.jom
widget.cpp
	"C:\Program Files\msvc2017_64\bin\moc.exe" -DUNICODE -D_UNICODE -DWIN32 -DWIN64 -DQT_DEPRECATED_WARNINGS -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_SERIALPORT_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB --compiler-flavor=msvc --include debug/moc_predefs.h -I"C:/Program Files/msvc2017_64/mkspecs/win32-msvc" -ID:/qtPro/ClientPro -ID:/GmSSL/include -I"C:/Program Files/msvc2017_64/include" -I"C:/Program Files/msvc2017_64/include/QtWidgets" -I"C:/Program Files/msvc2017_64/include/QtGui" -I"C:/Program Files/msvc2017_64/include/QtANGLE" -I"C:/Program Files/msvc2017_64/include/QtSerialPort" -I"C:/Program Files/msvc2017_64/include/QtNetwork" -I"C:/Program Files/msvc2017_64/include/QtCore" -I"C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.29.30133\ATLMFC\include" -I"C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Tools\MSVC\14.29.30133\include" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\ucrt" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\shared" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\um" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\winrt" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\cppwinrt" widget.h -o debug\moc_widget.cpp
	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding /utf-8 -Zi -MDd -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -EHsc /Fddebug\ClientPro.vc.pdb -DUNICODE -D_UNICODE -DWIN32 -DWIN64 -DQT_DEPRECATED_WARNINGS -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_SERIALPORT_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I..\..\GmSSL\include -I"C:\Program Files\msvc2017_64\include" -I"C:\Program Files\msvc2017_64\include\QtWidgets" -I"C:\Program Files\msvc2017_64\include\QtGui" -I"C:\Program Files\msvc2017_64\include\QtANGLE" -I"C:\Program Files\msvc2017_64\include\QtSerialPort" -I"C:\Program Files\msvc2017_64\include\QtNetwork" -I"C:\Program Files\msvc2017_64\include\QtCore" -Idebug -I. -I\include -I"C:\Program Files\msvc2017_64\mkspecs\win32-msvc" -Fodebug\ @C:\Users\21443\AppData\Local\Temp\moc_process_thread.obj.4208.328.jom
moc_process_thread.cpp
	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding /utf-8 -Zi -MDd -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -EHsc /Fddebug\ClientPro.vc.pdb -DUNICODE -D_UNICODE -DWIN32 -DWIN64 -DQT_DEPRECATED_WARNINGS -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_SERIALPORT_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I..\..\GmSSL\include -I"C:\Program Files\msvc2017_64\include" -I"C:\Program Files\msvc2017_64\include\QtWidgets" -I"C:\Program Files\msvc2017_64\include\QtGui" -I"C:\Program Files\msvc2017_64\include\QtANGLE" -I"C:\Program Files\msvc2017_64\include\QtSerialPort" -I"C:\Program Files\msvc2017_64\include\QtNetwork" -I"C:\Program Files\msvc2017_64\include\QtCore" -Idebug -I. -I\include -I"C:\Program Files\msvc2017_64\mkspecs\win32-msvc" -Fodebug\ @C:\Users\21443\AppData\Local\Temp\moc_upgrade_protocol.obj.4208.375.jom
moc_upgrade_protocol.cpp
main.cpp(10): warning C4189: “codec”: 局部变量已初始化但不引用
	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding /utf-8 -Zi -MDd -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -EHsc /Fddebug\ClientPro.vc.pdb -DUNICODE -D_UNICODE -DWIN32 -DWIN64 -DQT_DEPRECATED_WARNINGS -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_SERIALPORT_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -I..\..\GmSSL\include -I"C:\Program Files\msvc2017_64\include" -I"C:\Program Files\msvc2017_64\include\QtWidgets" -I"C:\Program Files\msvc2017_64\include\QtGui" -I"C:\Program Files\msvc2017_64\include\QtANGLE" -I"C:\Program Files\msvc2017_64\include\QtSerialPort" -I"C:\Program Files\msvc2017_64\include\QtNetwork" -I"C:\Program Files\msvc2017_64\include\QtCore" -Idebug -I. -I\include -I"C:\Program Files\msvc2017_64\mkspecs\win32-msvc" -Fodebug\ @C:\Users\21443\AppData\Local\Temp\moc_widget.obj.4208.390.jom
moc_widget.cpp
upgrade_protocol.cpp(141): warning C4267: “初始化”: 从“size_t”转换到“uint16_t”，可能丢失数据
upgrade_protocol.cpp(180): warning C4189: “dataLength”: 局部变量已初始化但不引用
	link /NOLOGO /DYNAMICBASE /NXCOMPAT /DEBUG /SUBSYSTEM:WINDOWS "/MANIFESTDEPENDENCY:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' publicKeyToken='6595b64144ccf1df' language='*' processorArchitecture='*'" /MANIFEST:embed /OUT:debug\ClientPro.exe @C:\Users\21443\AppData\Local\Temp\ClientPro.exe.4208.1453.jom
upgrade_protocol.obj : error LNK2019: 无法解析的外部符号 sm3_digest，函数 "private: class std::vector<unsigned char,class std::allocator<unsigned char> > __cdecl UpgradeProtocol::sm3Hash(class std::vector<unsigned char,class std::allocator<unsigned char> > const &)" (?sm3Hash@UpgradeProtocol@@AEAA?AV?$vector@EV?$allocator@E@std@@@std@@AEBV23@@Z) 中引用了该符号
upgrade_protocol.obj : error LNK2019: 无法解析的外部符号 sm2_point_from_octets，函数 "private: struct SM2_KEY __cdecl UpgradeProtocol::loadSM2PublicKeyFromData(class std::vector<unsigned char,class std::allocator<unsigned char> > const &)" (?loadSM2PublicKeyFromData@UpgradeProtocol@@AEAA?AUSM2_KEY@@AEBV?$vector@EV?$allocator@E@std@@@std@@@Z) 中引用了该符号
upgrade_protocol.obj : error LNK2019: 无法解析的外部符号 sm2_key_generate，函数 "private: void __cdecl UpgradeProtocol::generateAndSaveSM2PrivateKey(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?generateAndSaveSM2PrivateKey@UpgradeProtocol@@AEAAXAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) 中引用了该符号
upgrade_protocol.obj : error LNK2019: 无法解析的外部符号 sm2_key_set_public_key，函数 "private: struct SM2_KEY __cdecl UpgradeProtocol::loadSM2PublicKeyFromData(class std::vector<unsigned char,class std::allocator<unsigned char> > const &)" (?loadSM2PublicKeyFromData@UpgradeProtocol@@AEAA?AUSM2_KEY@@AEBV?$vector@EV?$allocator@E@std@@@std@@@Z) 中引用了该符号
upgrade_protocol.obj : error LNK2019: 无法解析的外部符号 sm2_private_key_to_pem，函数 "private: void __cdecl UpgradeProtocol::generateAndSaveSM2PrivateKey(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?generateAndSaveSM2PrivateKey@UpgradeProtocol@@AEAAXAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) 中引用了该符号
upgrade_protocol.obj : error LNK2019: 无法解析的外部符号 sm2_private_key_from_pem，函数 "private: struct SM2_KEY __cdecl UpgradeProtocol::loadSM2PrivateKey(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?loadSM2PrivateKey@UpgradeProtocol@@AEAA?AUSM2_KEY@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) 中引用了该符号
upgrade_protocol.obj : error LNK2019: 无法解析的外部符号 sm2_encrypt，函数 "private: class std::vector<unsigned char,class std::allocator<unsigned char> > __cdecl UpgradeProtocol::sm2Encrypt(struct SM2_KEY const &)" (?sm2Encrypt@UpgradeProtocol@@AEAA?AV?$vector@EV?$allocator@E@std@@@std@@AEBUSM2_KEY@@@Z) 中引用了该符号
upgrade_protocol.obj : error LNK2019: 无法解析的外部符号 sm4_set_encrypt_key，函数 "private: void __cdecl UpgradeProtocol::generateSM4Key(void)" (?generateSM4Key@UpgradeProtocol@@AEAAXXZ) 中引用了该符号
upgrade_protocol.obj : error LNK2019: 无法解析的外部符号 sm4_cbc_encrypt，函数 "private: class std::vector<unsigned char,class std::allocator<unsigned char> > __cdecl UpgradeProtocol::sm4Encrypt(class std::vector<unsigned char,class std::allocator<unsigned char> > const &,class std::vector<unsigned char,class std::allocator<unsigned char> > &)" (?sm4Encrypt@UpgradeProtocol@@AEAA?AV?$vector@EV?$allocator@E@std@@@std@@AEBV23@AEAV23@@Z) 中引用了该符号
debug\ClientPro.exe : fatal error LNK1120: 9 个无法解析的外部命令
jom: D:\qtPro\ClientPro\Makefile.Debug [debug\ClientPro.exe] Error 1120
jom: D:\qtPro\ClientPro\Makefile [debug] Error 2
10:04:43: 进程"D:\qt\Tools\QtCreator\bin\jom\jom.exe"退出，退出代码 2 。
Error while building/deploying project ClientPro (kit: Replacement for "Desktop Qt 5.11.1 MSVC2017 64bit")
When executing step "Make"
10:04:43: Elapsed time: 00:02.

[hhhl01]

@JonB Thank you, I will try to find out the cause of the problem and will get back to you if there are any results.This library is indeed relatively rare, but I cannot modify the specifications in the project.

[jsulm]

@hhhl01 said in undefined reference to &#x60;sm3_digest':

else:unix:!macx: LIBS += -L$$PWD/../../GmSSL/gmssl.lib

On Unix/Linux this is wrong.
Please check https://doc.qt.io/qt-6/qmake-variable-reference.html#libs

$$PWD/../../GmSSL/debug/gmssl.lib - is this path valid?
Are the missing functions part of the gmssl library?

[hhhl01]

@jsulm This path is valid, I'm developing on windows platform, when I change it to the format below it doesn't work.

else:unix:!macx: LIBS += -L$$PWD/../../GmSSL/lib/ -lgmssl

[jsulm]

@hhhl01 said in undefined reference to &#x60;sm3_digest':

when I change it to the format below it doesn't work

I didn't say you have to change it for Windows.

Again: "Are the missing functions part of the gmssl library?"
Was this library built using same compiler?