"make: *** There is no rule to build target "sub-mysql". Stop." error when trying to create a MySQL driver with Qt

Question

I'm trying to install the QMYSQL driver on Ubuntu 24.04 LTS with Qt version 5.15.3, but I'm running into some issues.

Problem:

The sqldrivers directory only contains the SQLite driver, and I'm missing the QMYSQL driver.

Paths:

• qmake: /usr/lib/x86_64-linux-gnu/qt5/bin/qmake
• sqldrivers: /usr/lib/x86_64-linux-gnu/qt5/plugins/sqldrivers
• libmysqlclient.so.21.2.37: /usr/lib/x86_64-linux-gnu/libmysqlclient.so.21.2.37
• MySQL headers: /usr/include/mysql

Steps Taken:

1. Installed necessary dependencies: sudo apt install libmysqlclient-dev
2. Tried the following commands:

bash cd $QTDIR/qtbase/src/plugins/sqldrivers qmake -- MYSQL_PREFIX=/usr/local make sub-mysql

Output:

/usr/lib/x86_64-linux-gnu/qt5/plugins/sqldrivers$ qmake -- MYSQL_PREFIX=/usr/include/mysql Usage: /usr/lib/qt5/bin/qmake [mode] [options] [files]

QMake has two modes, one mode for generating project files based on some heuristics, and the other for generating makefiles. Normally you shouldn't need to specify a mode, as makefile generation is the default mode for qmake, but you may use this to test qmake on an existing project

[...]

and:

make: *** There is no rule to build target "sub-mysql". Stop.

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How do I solve this problem and install the QMYSQL driver?