Qt static with MySQL issue

[Cobra91151]

@SGaist

Ok, my batch file:

SET /P qtBuildType=Qt build type (shared/static): 
SET /P qtBuildMySqlIncludePath=MySql include path: 
SET /P qtBuildMySqlLibPath=MySql lib path: 
SET /P qtBuildOpenSSLIncludePath=OpenSSL include path: 
SET /P qtBuildOpenSSLLibPath=OpenSSL lib path: 
SET /P qtBuildPath=Enter Qt build path: 
configure.bat -debug-and-release -%qtBuildType% -opensource -nomake tools -nomake examples -no-ltcg -sql-mysql -I "%qtBuildMySqlIncludePath%" -L "%qtBuildMySqlLibPath%" -ssl -openssl -openssl-linked -I "%qtBuildOpenSSLIncludePath%" -L "%qtBuildOpenSSLLibPath%" OPENSSL_LIBS="-lUser32 -lAdvapi32 -lGdi32 -lCrypt32" OPENSSL_LIBS_DEBUG="-lssleay32MTd -llibeay32MTd" OPENSSL_LIBS_RELEASE="-lssleay32MT -llibeay32MT" -prefix "%qtBuildPath%"

For example, MySql include path was : C:\MySQL\mysql-5.7.22-win32\include and MySql lib path C:\MySQL\mysql-5.7.22-win32\lib but it make Qt to use C:\MySQL\mysql-5.7.22-win32\lib\libmysql.lib (dynamic). I think, should be another way to set proper library.

[SGaist]

I would add MYSQL_LIBS=-lmysqlclient.

[Cobra91151]

@SGaist

Ok. I will try it and reply. Thanks.

[Cobra91151]

I added the MYSQL_LIBS="-lmysqlclient" to configure:

configure.bat -debug-and-release -%qtBuildType% -opensource -nomake tools -nomake examples -no-ltcg -sql-mysql -I "%qtBuildMySqlIncludePath%" -L "%qtBuildMySqlLibPath%" MYSQL_LIBS="-lmysqlclient" -ssl -openssl -openssl-linked -I "%qtBuildOpenSSLIncludePath%" -L "%qtBuildOpenSSLLibPath%" OPENSSL_LIBS="-lUser32 -lAdvapi32 -lGdi32 -lCrypt32" OPENSSL_LIBS_DEBUG="-lssleay32MTd -llibeay32MTd" OPENSSL_LIBS_RELEASE="-lssleay32MT -llibeay32MT" -prefix "%qtBuildPath%"

But I get the issue:

I think I should also provide the libmysql to MYSQL_LIBS or the problem is with mysql-5.7.23.

[Cobra91151]

I have found the issue! Adding this line MYSQL_LIBS="-lmysqlclient" to configure for some reason breaks the detection of MySQL. I will try again to confirm it.

[Cobra91151]

Yes, I was right. Adding MYSQL_LIBS="-lmysqlclient" breaks the detection of MySQL - 100% confirmed.

[Cobra91151]

I run a few tests and found that Qt requires libmysql.lib to configure, but since it dynamic lib it won't work in my case. I think I should try to rename mysqlclient.lib to libmysql.lib and test it.

[Cobra91151]

No, it fails with detection the MySQL if libmysql.lib has been changed, renamed or removed.

[Cobra91151]

I think I have found the issue.

This line of code in the file - configure.json - { "libs": "-lmysqlclient", "condition": "!config.win32" } disables mysqlclient (static) lib because condition states that !win32, means not Windows system. I will change it and try again.

[Cobra91151]

I have tried different solutions but it all failed.

The config.log:

+ cd /d D:\QtBuild\Src\config.tests\mysql && D:\QtBuild\Src\qtbase\bin\qmake.exe "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += static warn_off console single_arch" "QMAKE_LIBDIR += C:\\MySQL\\mysql-5.7.23-win32\\lib C:\\OpenSSL\\openssl-1.0.2l-vs2017\\lib" "INCLUDEPATH += C:\\MySQL\\mysql-5.7.23-win32\\include C:\\OpenSSL\\openssl-1.0.2l-vs2017\\include" "LIBS += -lmysqlclient" D:/QtBuild/Src/config.tests/mysql
+ cd /d D:\QtBuild\Src\config.tests\mysql && set MAKEFLAGS=& nmake
> Microsoft (R) Program Maintenance Utility Version 14.15.26726.0
> Copyright (C) Microsoft Corporation.  All rights reserved.
> 	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding -Zi -MDd -W0 -EHsc /Fdmysql.vc.pdb -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\MySQL\mysql-5.7.23-win32\include -IC:\OpenSSL\openssl-1.0.2l-vs2017\include -ID:\QtBuild\Src\qtbase\mkspecs\win32-msvc -Fo @C:\Users\cobra\AppData\Local\Temp\nmC064.tmp
> main.cpp
> 	link /NOLOGO /DYNAMICBASE /NXCOMPAT /DEBUG /SUBSYSTEM:CONSOLE "/MANIFESTDEPENDENCY:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' publicKeyToken='6595b64144ccf1df' language='*' processorArchitecture='*'" /MANIFEST:embed /OUT:mysql.exe @C:\Users\cobra\AppData\Local\Temp\nmC2B7.tmp
> LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
> mysqlclient.lib(xml.obj) : error LNK2001: unresolved external symbol __imp__sprintf
> mysqlclient.lib(libmysql.obj) : error LNK2001: unresolved external symbol __imp__sprintf
> mysqlclient.lib(my_time.obj) : error LNK2001: unresolved external symbol __imp__sprintf
> mysqlclient.lib(client.obj) : error LNK2001: unresolved external symbol __imp__sprintf
> mysqlclient.lib(ctype.obj) : error LNK2001: unresolved external symbol __imp__sprintf
> mysqlclient.lib(my_init.obj) : error LNK2019: unresolved external symbol __imp__RegCloseKey@4 referenced in function _win32_have_tcpip
> mysqlclient.lib(my_init.obj) : error LNK2019: unresolved external symbol __imp__RegEnumValueA@32 referenced in function _win_init_registry
> mysqlclient.lib(my_init.obj) : error LNK2019: unresolved external symbol __imp__RegOpenKeyExA@20 referenced in function _win32_have_tcpip
> mysqlclient.lib(my_default.obj) : error LNK2001: unresolved external symbol __imp____iob_func
> mysqlclient.lib(log_client.obj) : error LNK2001: unresolved external symbol __imp____iob_func
> mysqlclient.lib(my_init.obj) : error LNK2001: unresolved external symbol __imp____iob_func
> mysqlclient.lib(my_winfile.obj) : error LNK2001: unresolved external symbol __imp____iob_func
> mysqlclient.lib(my_mess.obj) : error LNK2001: unresolved external symbol __imp____iob_func
> mysqlclient.lib(typelib.obj) : error LNK2001: unresolved external symbol __imp____iob_func
> mysqlclient.lib(my_mess.obj) : error LNK2019: unresolved external symbol __imp__fprintf referenced in function _my_message_stderr
> mysqlclient.lib(typelib.obj) : error LNK2001: unresolved external symbol __imp__fprintf
> mysqlclient.lib(log_client.obj) : error LNK2001: unresolved external symbol __imp__fprintf
> mysqlclient.lib(client_authentication.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) char const * __cdecl std::_Winerror_map(int)" (__imp_?_Winerror_map@std@@YAPBDH@Z) referenced in function "public: virtual class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall std::_System_error_category::message(int)const " (?message@_System_error_category@std@@UBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@H@Z)
> mysqlclient.lib(sha2_password_common.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) char const * __cdecl std::_Winerror_map(int)" (__imp_?_Winerror_map@std@@YAPBDH@Z)
> mysqlclient.lib(my_default.obj) : error LNK2019: unresolved external symbol __imp__printf referenced in function _my_load_defaults
> mysqlclient.lib(ssl.obj) : error LNK2019: unresolved external symbol __imp___snprintf referenced in function _ya_SSL_ASN1_TIME_to_string
> mysqlclient.lib(log_client.obj) : error LNK2019: unresolved external symbol __imp__vfprintf referenced in function "void __cdecl error_log_vprint(enum error_log_level::type,char const *,char *)" (?error_log_vprint@@YAXW4type@error_log_level@@PBDPAD@Z)
> mysqlclient.lib(common.obj) : error LNK2019: unresolved external symbol __imp__EqualSid@8 referenced in function "public: bool __thiscall Sid::operator==(class Sid const &)" (??8Sid@@QAE_NABV0@@Z)
> mysqlclient.lib(common.obj) : error LNK2019: unresolved external symbol __imp__GetTokenInformation@20 referenced in function "public: __thiscall Sid::Sid(void *)" (??0Sid@@QAE@PAX@Z)
> mysqlclient.lib(common.obj) : error LNK2019: unresolved external symbol __imp__IsValidSid@4 referenced in function "public: bool __thiscall Sid::is_valid(void)const " (?is_valid@Sid@@QBE_NXZ)
> mysqlclient.lib(common.obj) : error LNK2019: unresolved external symbol __imp__LookupAccountNameW@28 referenced in function "public: __thiscall Sid::Sid(wchar_t const *)" (??0Sid@@QAE@PB_W@Z)
> mysqlclient.lib(random.obj) : error LNK2019: unresolved external symbol __imp__CryptAcquireContextA@20 referenced in function "public: __thiscall TaoCrypt::OS_Seed::OS_Seed(void)" (??0OS_Seed@TaoCrypt@@QAE@XZ)
> mysqlclient.lib(random.obj) : error LNK2019: unresolved external symbol __imp__CryptReleaseContext@8 referenced in function "public: __thiscall TaoCrypt::OS_Seed::~OS_Seed(void)" (??1OS_Seed@TaoCrypt@@QAE@XZ)
> mysqlclient.lib(random.obj) : error LNK2019: unresolved external symbol __imp__CryptGenRandom@12 referenced in function "public: void __thiscall TaoCrypt::OS_Seed::GenerateSeed(unsigned char *,unsigned int)" (?GenerateSeed@OS_Seed@TaoCrypt@@QAEXPAEI@Z)
> mysql.exe : fatal error LNK1120: 17 unresolved externals
> NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.15.26726\bin\HostX86\x86\link.EXE"' : return code '0x460'
> Stop.
 => source failed verification.
Trying source 6 (type inline) of library mysql ...
+ cd /d D:\QtBuild\Src\config.tests\mysql && D:\QtBuild\Src\qtbase\bin\qmake.exe "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += static warn_off console single_arch" "QMAKE_LIBDIR += C:\\MySQL\\mysql-5.7.23-win32\\lib C:\\OpenSSL\\openssl-1.0.2l-vs2017\\lib" "INCLUDEPATH += C:\\MySQL\\mysql-5.7.23-win32\\include C:\\OpenSSL\\openssl-1.0.2l-vs2017\\include" "LIBS += -lmysqlclient" D:/QtBuild/Src/config.tests/mysql
+ cd /d D:\QtBuild\Src\config.tests\mysql && set MAKEFLAGS=& nmake clean && set MAKEFLAGS=& nmake
> Microsoft (R) Program Maintenance Utility Version 14.15.26726.0
> Copyright (C) Microsoft Corporation.  All rights reserved.
> 	del main.obj
> 	del mysql.vc.pdb mysql.ilk mysql.idb
> Microsoft (R) Program Maintenance Utility Version 14.15.26726.0
> Copyright (C) Microsoft Corporation.  All rights reserved.
> 	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding -Zi -MDd -W0 -EHsc /Fdmysql.vc.pdb -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\MySQL\mysql-5.7.23-win32\include -IC:\OpenSSL\openssl-1.0.2l-vs2017\include -ID:\QtBuild\Src\qtbase\mkspecs\win32-msvc -Fo @C:\Users\cobra\AppData\Local\Temp\nmC3CF.tmp
> main.cpp
> 	link /NOLOGO /DYNAMICBASE /NXCOMPAT /DEBUG /SUBSYSTEM:CONSOLE "/MANIFESTDEPENDENCY:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' publicKeyToken='6595b64144ccf1df' language='*' processorArchitecture='*'" /MANIFEST:embed /OUT:mysql.exe @C:\Users\cobra\AppData\Local\Temp\nmC632.tmp
> LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
> mysqlclient.lib(xml.obj) : error LNK2001: unresolved external symbol __imp__sprintf
> mysqlclient.lib(libmysql.obj) : error LNK2001: unresolved external symbol __imp__sprintf
> mysqlclient.lib(my_time.obj) : error LNK2001: unresolved external symbol __imp__sprintf
> mysqlclient.lib(client.obj) : error LNK2001: unresolved external symbol __imp__sprintf
> mysqlclient.lib(ctype.obj) : error LNK2001: unresolved external symbol __imp__sprintf
> mysqlclient.lib(my_init.obj) : error LNK2019: unresolved external symbol __imp__RegCloseKey@4 referenced in function _win32_have_tcpip
> mysqlclient.lib(my_init.obj) : error LNK2019: unresolved external symbol __imp__RegEnumValueA@32 referenced in function _win_init_registry
> mysqlclient.lib(my_init.obj) : error LNK2019: unresolved external symbol __imp__RegOpenKeyExA@20 referenced in function _win32_have_tcpip
> mysqlclient.lib(my_default.obj) : error LNK2001: unresolved external symbol __imp____iob_func
> mysqlclient.lib(log_client.obj) : error LNK2001: unresolved external symbol __imp____iob_func
> mysqlclient.lib(my_init.obj) : error LNK2001: unresolved external symbol __imp____iob_func
> mysqlclient.lib(my_winfile.obj) : error LNK2001: unresolved external symbol __imp____iob_func
> mysqlclient.lib(my_mess.obj) : error LNK2001: unresolved external symbol __imp____iob_func
> mysqlclient.lib(typelib.obj) : error LNK2001: unresolved external symbol __imp____iob_func
> mysqlclient.lib(my_mess.obj) : error LNK2019: unresolved external symbol __imp__fprintf referenced in function _my_message_stderr
> mysqlclient.lib(typelib.obj) : error LNK2001: unresolved external symbol __imp__fprintf
> mysqlclient.lib(log_client.obj) : error LNK2001: unresolved external symbol __imp__fprintf
> mysqlclient.lib(client_authentication.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) char const * __cdecl std::_Winerror_map(int)" (__imp_?_Winerror_map@std@@YAPBDH@Z) referenced in function "public: virtual class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall std::_System_error_category::message(int)const " (?message@_System_error_category@std@@UBE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@H@Z)
> mysqlclient.lib(sha2_password_common.obj) : error LNK2001: unresolved external symbol "__declspec(dllimport) char const * __cdecl std::_Winerror_map(int)" (__imp_?_Winerror_map@std@@YAPBDH@Z)
> mysqlclient.lib(my_default.obj) : error LNK2019: unresolved external symbol __imp__printf referenced in function _my_load_defaults
> mysqlclient.lib(ssl.obj) : error LNK2019: unresolved external symbol __imp___snprintf referenced in function _ya_SSL_ASN1_TIME_to_string
> mysqlclient.lib(log_client.obj) : error LNK2019: unresolved external symbol __imp__vfprintf referenced in function "void __cdecl error_log_vprint(enum error_log_level::type,char const *,char *)" (?error_log_vprint@@YAXW4type@error_log_level@@PBDPAD@Z)
> mysqlclient.lib(common.obj) : error LNK2019: unresolved external symbol __imp__EqualSid@8 referenced in function "public: bool __thiscall Sid::operator==(class Sid const &)" (??8Sid@@QAE_NABV0@@Z)
> mysqlclient.lib(common.obj) : error LNK2019: unresolved external symbol __imp__GetTokenInformation@20 referenced in function "public: __thiscall Sid::Sid(void *)" (??0Sid@@QAE@PAX@Z)
> mysqlclient.lib(common.obj) : error LNK2019: unresolved external symbol __imp__IsValidSid@4 referenced in function "public: bool __thiscall Sid::is_valid(void)const " (?is_valid@Sid@@QBE_NXZ)
> mysqlclient.lib(common.obj) : error LNK2019: unresolved external symbol __imp__LookupAccountNameW@28 referenced in function "public: __thiscall Sid::Sid(wchar_t const *)" (??0Sid@@QAE@PB_W@Z)
> mysqlclient.lib(random.obj) : error LNK2019: unresolved external symbol __imp__CryptAcquireContextA@20 referenced in function "public: __thiscall TaoCrypt::OS_Seed::OS_Seed(void)" (??0OS_Seed@TaoCrypt@@QAE@XZ)
> mysqlclient.lib(random.obj) : error LNK2019: unresolved external symbol __imp__CryptReleaseContext@8 referenced in function "public: __thiscall TaoCrypt::OS_Seed::~OS_Seed(void)" (??1OS_Seed@TaoCrypt@@QAE@XZ)
> mysqlclient.lib(random.obj) : error LNK2019: unresolved external symbol __imp__CryptGenRandom@12 referenced in function "public: void __thiscall TaoCrypt::OS_Seed::GenerateSeed(unsigned char *,unsigned int)" (?GenerateSeed@OS_Seed@TaoCrypt@@QAEXPAEI@Z)
> mysql.exe : fatal error LNK1120: 17 unresolved externals
> NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.15.26726\bin\HostX86\x86\link.EXE"' : return code '0x460'
> Stop.
 => source failed verification.
test config.sqldrivers.libraries.mysql FAILED
looking for library oci
Trying source 0 (type inline) of library oci ...
+ cd /d D:\QtBuild\Src\config.tests\oci && D:\QtBuild\Src\qtbase\bin\qmake.exe "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += static warn_off console single_arch" "QMAKE_LIBDIR += C:\\MySQL\\mysql-5.7.23-win32\\lib C:\\OpenSSL\\openssl-1.0.2l-vs2017\\lib" "INCLUDEPATH += C:\\MySQL\\mysql-5.7.23-win32\\include C:\\OpenSSL\\openssl-1.0.2l-vs2017\\include" "LIBS += -loci" D:/QtBuild/Src/config.tests/oci
+ cd /d D:\QtBuild\Src\config.tests\oci && set MAKEFLAGS=& nmake
> Microsoft (R) Program Maintenance Utility Version 14.15.26726.0
> Copyright (C) Microsoft Corporation.  All rights reserved.
> 	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding -Zi -MDd -W0 -EHsc /Fdoci.vc.pdb -DUNICODE -D_UNICODE -DWIN32 -I. -IC:\MySQL\mysql-5.7.23-win32\include -IC:\OpenSSL\openssl-1.0.2l-vs2017\include -ID:\QtBuild\Src\qtbase\mkspecs\win32-msvc -Fo @C:\Users\cobra\AppData\Local\Temp\nmC6EC.tmp
> main.cpp
> .\main.cpp(2): fatal error C1083: Cannot open include file: 'oci.h': No such file or directory
> NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.15.26726\bin\HostX86\x86\cl.EXE"' : return code '0x2'
> Stop.

Any ideas how to make it compile with the static library? Thanks.

[Cobra91151]

@SGaist said in Qt static with MySQL issue:

MT and MD are just related to the Windows runtime type you'll be using.

The issue must be with this. I checked Qt configure log and the same errors are displayed with MFC static test project in VS 2017.

LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library
1>mysqlclient.lib(xml.obj) : error LNK2001: unresolved external symbol __imp__sprintf
1>mysqlclient.lib(libmysql.obj) : error LNK2001: unresolved external symbol __imp__sprintf
1>mysqlclient.lib(my_time.obj) : error LNK2001: unresolved external symbol __imp__sprintf
1>mysqlclient.lib(client.obj) : error LNK2001: unresolved external symbol __imp__sprintf
1>mysqlclient.lib(ctype.obj) : error LNK2001: unresolved external symbol __imp__sprintf
1>mysqlclient.lib(my_error.obj) : error LNK2001: unresolved external symbol __imp__strcat_s
1>mysqlclient.lib(my_error.obj) : error LNK2001: unresolved external symbol __imp__strerror_s
1>mysqlclient.lib(my_init.obj) : error LNK2001: unresolved external symbol __imp__strdup
1>mysqlclient.lib(yassl_int.obj) : error LNK2001: unresolved external symbol __imp__strdup
1>OLDNAMES.lib(strdup.obi) : error LNK2001: unresolved external symbol __imp__strdup
1>mysqlclient.lib(my_default.obj) : error LNK2001: unresolved external symbol __imp____iob_func
1>mysqlclient.lib(log_client.obj) : error LNK2001: unresolved external symbol __imp____iob_func
1>mysqlclient.lib(my_init.obj) : error LNK2001: unresolved external symbol __imp____iob_func
1>mysqlclient.lib(my_winfile.obj) : error LNK2001: unresolved external symbol __imp____iob_func
1>mysqlclient.lib(my_mess.obj) : error LNK2001: unresolved external symbol __imp____iob_func
1>mysqlclient.lib(typelib.obj) : error LNK2001: unresolved external symbol __imp____iob_func
1>mysqlclient.lib(my_init.obj) : error LNK2001: unresolved external symbol __imp__putenv

It leads to Qt configure errors. For some reason it conflicts with MSVCRT lib.

[Cobra91151]

I have run some tests on another PC, the same errors are present there. So, I think the mysqlclient is build for another compiler, maybe, MinGW or older VS versions. I need to find the MySQL source code and compile mysqlclient (static) lib for Visual Studio 2017. Any ideas where I can find it? Thanks.

[Cobra91151]

I have found the source code here: https://dev.mysql.com/downloads/mysql/
Now I will read docs how to compile it.

[Cobra91151]

I have built the MySQL libs, added to the MFC test project and it displays the same errors. It's strange. Next, I will install virtual machine, VS 2015 and build the test project there.

[Cobra91151]

I have found the issue and built the MySQL libs. Then I reconfigure Qt, all built well but when I build my project I get the issue:

So, mysqlclient.lib already has the OpenSSL?

Also, I have the issue with debugging the app:

I have the debug version of the library, but I want to know how to add it to the configure? I have tried: MYSQL_LIBS_DEBUG/MYSQL_LIBS_RELEASE but it fails with detection of MySQL. Any ideas? Thanks.

[Cobra91151]

I have found that I must have the OpenSSL built statically as /MD runtime lib in order to compile my project. The question is where to get such library or source code? Thanks in advance.

[Cobra91151]

I have fixed the issue with MYSQL_LIBS_DEBUG/MYSQL_LIBS_RELEASE libs by creating the advanced batch script file. So, it compiles the debug/release separately, has a support to remove Qt source dir and unpack the source from archive using WinRaR for the next compilation.

By the way, I get issue when building static Qt in the debug mode:

By pressing Retry it continues to build Qt successfully.

Still one more issue to fix:

[Cobra91151]

So, I have fixed the issue:

Solution:
OpenSSL source code: 1.1.1
MySQL source code: 5.7.23

1. Compile static OpenSSL libs with /MDd | /MD flags for Debug/Release mode
2. Compile MySQL static libs (/MDd | /MD) with pre-compiled OpenSSL static libs (option 1)

I test it in the simple console app in the Visual Studio 2017:

Code:

#include <iostream>
#include <mysql.h>
#include <openssl/bio.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
using namespace std;

int main()
{
	cout << "Hello World!" << endl;
	cout << "Hello!" << endl;
	SSL_load_error_strings();
	ERR_load_BIO_strings();
	OpenSSL_add_all_algorithms();
	printf("MySQL client version: %s\n", mysql_get_client_info());
	system("PAUSE");
	return 0;
}

The result:

Now I configure Qt statically with these libs (MySQL & OpenSSL), first in the Debug mode. It find MySQL and OpenSSL during configuration but then I get this issue:

The question is how to fix this issue with Qt? Thanks in advance.

[aha_1980]

This post is deleted!

[Cobra91151]

@aha_1980

My issue is not solved because Qt for some reason doesn't build it. The question is why it can't build it properly now?