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Asked: 2026-06-10T19:19:35+00:00

I am having real problem with compiling MySQL libraries for Qt in Windows and

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I am having real problem with compiling MySQL libraries for Qt in Windows and Mac. Essentially, I cannot use mysql with a Qt application because of missing the file QMYSQL. I am pretty much new when it comes to configure and install applications in Unix-like systems. However, building libraries for Qt looks like this. I have read a little bit about GNU C and GNU Make to understand what is done but it is still overwhelming me.

The guide in Qt Project says I should have folder include and lib/opt in which I should have libmysql.lib file. There’s no such folder like opt/ but there is the file libmysql.lib and libmysql.dll in /lib folder. Qt Project website does not say that but I have copied everything to C:/QtSDK/QtSources/4.8.1/src/plugins/sqldriver/mysql where I also found mysql.pro. I run this command:

qmake "INCLUDEPATHS+=include" "LIB+=libmysql.lib" mysql.pro

and the program generated a Makefile for me. When I run “make”, or “make release” etc. make stops always at the same point and states there is no “mysql.lib” file. I cannot find this file anywhere.

Does anybody has any idea how to do it? Please, at least direct me where I could start looking.

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1 Answer

  1. Editorial Team

    The following has worked for me: Unfortunately, I had to install the whole Qt(v 4.8.2) from sources. I strongly recommend it. It has a huge impact on your experience, although it may sometimes be a real pain.

    I have:

    • installed the latest MinGW 4.7.0 using self-intaller + additional tools
    • installed the latest MySQL Database engine + Connector/C via intaller MSI (ZIP archive did not worked) in a folder without spaces in its name (C:\Mysql-libs\ etc.)

    • built makefile by calling configure with following parameters:

      configure -debug-and-release -opensource -shared -platform win32-g++-4.6 -plugin-sql-mysql -I C:\ApacheMysqlPhp\Mysql\include -L C:\ApacheMysqlPhp\Mysql\lib -L C:\ApacheMysqlPhp\Mysql\lib\opt -plugin-sql-odbc -developer-build -no-qt3support -openssl -I C:\openssl\OpenSSL-Win32\include -L C:\openssl\OpenSSL-Win32

    • and finally

      mingw32-make.exe

    Special attention should be on
    -platform win32-g++4.6
    if MinGW 4.6.x+ is used. It did not seem to work when I used
    -platform win32-g++ etc. I hope it will help the others to build MySql libraries for Qt.

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