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Latest libmysql.dll may result in Windows XP incompatible applications
Posted by: Dario Fumagalli
Date: February 20, 2014 04:15AM

Hello,

Using the latest versions (I suspect all versions past 6) of the libmysql.dll lead to possibly Windows XP incompatible applications.

I have tested and may replicate this in a 32 bit, multithreaded, Delphi XE5 generated application deployed to Windows XP Service Pack 3:


- Deploy no DLL: my application won't start. This is a basic check that no "spurious" libmysql.dll may be found "around" to affect the test.

- Deploy latest (I tried yesterday's available Connector) libmysql.dll in Windows/System32: application shows this error message:

The procedure entry point InitializeConditionVariable could not located in the dynamic library Kernel32.dll.

This specific error message is what made me bold the "multithreaded" word above.

- Deploy a 2011, version 5.5.9 libmysql.dll: the application will start and work perfectly.

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