QT MYSQL驱动器版本，对`mysql_get_client_version @ 0'的未定义引用

Question

我正在尝试构建QMYSQL驱动器，我关注了文档（https://doc.qt.io/qt-5/sql-driver.html#how-to-build-the-qmysql-plugin-on-windows）

建议我运行代码：

cd %QTDIR%\qtbase\src\plugins\sqldrivers
qmake -- MYSQL_INCDIR=C:/MySQL/include "MYSQL_LIBDIR=C:/MYSQL/MySQL Server <version>/lib/opt"
nmake sub-mysql

在mysql“自定义安装”中没有“库和包含文件”模块，因此我从sql服务中选择文件夹。

我在cmd上运行代码：

cd C:\Qt\5.12.6\Src\qtbase\src\plugins\sqldrivers
qmake --  "MYSQL_INCDIR=C:/MySql/MySQL Server 8.0/include" "MYSQL_LIBDIR=C:/MySql/MySQL Server 8.0/lib"

结果是：

info: creating stash file C:\Qt\5.12.6\Src\qtbase\src\plugins\sqldrivers\.qmake.stash

Running configuration tests...
Checking for DB2 (IBM)... no
Checking for InterBase... no
Checking for MySQL... no
Checking for OCI (Oracle)... no
Checking for ODBC... yes
Checking for PostgreSQL... no
Checking for SQLite (version 2)... no
Checking for TDS (Sybase)... no
Done running configuration tests.

Configure summary:

Qt Sql Drivers:
  DB2 (IBM) .............................. no
  InterBase .............................. no
  MySql .................................. no
  OCI (Oracle) ........................... no
  ODBC ................................... yes
  PostgreSQL ............................. no
  SQLite2 ................................ no
  SQLite ................................. yes
    Using system provided SQLite ......... no
  TDS (Sybase) ........................... no

Qt is now configured for building. Just run 'mingw32-make'.
Once everything is built, you must run 'mingw32-make install'.
Qt will be installed into 'C:\Qt\5.12.6\mingw73_32'.

Prior to reconfiguration, make sure you remove any leftovers from
the previous build.

似乎未检测到mysql。我应该怎么做才能建立mysql驱动器。

我检查了qmake的配置日志：

    Trying source 5 (type inline) of library mysql ...
+ cd /d C:\Qt\5.12.6\Src\qtbase\src\plugins\sqldrivers\config.tests\mysql && C:\Qt\5.12.6\mingw73_32\bin\qmake.exe "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared warn_off console single_arch" "QMAKE_LIBDIR += C:\\openssl\\lib C:\\Utils\\my_sql\\mysql-5.6.11-win32\\lib C:\\Utils\\postgresql\\pgsql\\lib" "INCLUDEPATH += C:\\openssl\\include C:\\Utils\\my_sql\\mysql-5.6.11-win32\\include C:\\Utils\\postgresql\\pgsql\\include" "QMAKE_USE += mysql" "QMAKE_LIBS_MYSQL = \"C:/MySql/MySQL Server 8.0/lib/libmysql.lib\"" "QMAKE_INCDIR_MYSQL = \"C:/MySql/MySQL Server 8.0/include\"" C:/Qt/5.12.6/Src/qtbase/src/plugins/sqldrivers/config.tests/mysql
> Info: creating stash file C:\Qt\5.12.6\Src\qtbase\src\plugins\sqldrivers\config.tests\.qmake.stash
+ cd /d C:\Qt\5.12.6\Src\qtbase\src\plugins\sqldrivers\config.tests\mysql && set MAKEFLAGS=& mingw32-make
> g++ -c -fno-keep-inline-dllexport -O2 -w -fexceptions -mthreads -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -I. -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-win32\include -IC:\Utils\postgresql\pgsql\include -I"C:\MySql\MySQL Server 8.0\include" -IC:\Qt\5.12.6\mingw73_32\mkspecs\win32-g++  -o main.o main.cpp
> g++ -Wl,-s -Wl,-subsystem,console -mthreads -o mysql.exe main.o  -LC:\openssl\lib -LC:\Utils\my_sql\mysql-5.6.11-win32\lib -LC:\Utils\postgresql\pgsql\lib "C:\MySql\MySQL Server 8.0\lib\libmysql.lib"   
> c:/mingw/bin/../lib/gcc/mingw32/8.2.0/../../../../mingw32/bin/ld.exe: main.o:main.cpp:(.text.startup+0xc): undefined reference to `mysql_get_client_version@0'
> collect2.exe: error: ld returned 1 exit status
> mingw32-make: *** [Makefile:66: mysql.exe] Error 1

我认为这是我的问题，

对`mysql_get_client_version @ 0的未定义引用

但是我不知道如何解决。我确定在“ include”文件夹中有一个带有方法的“ mysql.h”文件

无符号长STDCALL mysql_get_client_version（void）;

Answer 1

我解决了。

我解决了qmake是86X，服务器是64X。更改工作的64X qmake]

此文档比旧文档更好。

https://doc-snapshots.qt.io/qt5-5.14/sql-driver.html#how-to-build-the-qmysql-plugin-on-windows