[Mono-list] libmySQL-Dll not found exception

[Daniel Morgan]

As far as I can recall, Mono.Data.MySql only supports MySQ 3.x.whatever.

Mono.Data.MySql is deprecated and bit-rotted. It maybe removed from Mono's
class libraries in the future.  This would require approval from Miguel.

Please use ByteFX.Data.MySQLClient instead.  It is included in the Mono
class libraries.
Even though it is a third-party library, Reggie Burnett allowed it to be
included with Mono.

If you insist on using a deprecated library, you may need to modify the file
MONO_PREFIX/etc/mono/config
where the dll is mapped for libmySQL.  This is because it is named
completely different between Windows and Linux.

libmySQL.dll on Windows and libmysqlclient.so on Linux.  Well, it was that
way with MySQL 3.x.  I'm not sure how it is for 4.x.  Read the release notes
for MySQL 4.x to see what has changed between 3.x and 4.x.  This could give
you a clue on how to fix Mono.Data.MySql.

-----Original Message-----
From: mono-list-admin@lists.ximian.com
[mailto:mono-list-admin@lists.ximian.com]On Behalf Of roopa
Sent: Friday, March 05, 2004 1:12 AM
To: mono-list@lists.ximian.com
Subject: [Mono-list] libmySQL-Dll not found exception


I installed mySQL using the MySql rpms (v 4.0.18.0).

I tried executing the TestMySqlExecuteReader.cs program in
/mcs/class/Mono.Data.MySql/Test and got the following exception:

Unhandled Exception: System.DllNotFoundException: libmySQL
in <0x0005c> (wrapper managed-to-native) Mono.Data.MySql.MySql:Init
(intptr)
in <0x000f2> Mono.Data.MySql.MySqlConnection:Open ()
in <0x0004f> (wrapper remoting-invoke-with-check)
Mono.Data.MySql.MySqlConnection:Open ()
in <0x00093> TestSystemDataSqlClient.TestSqlDataReader:Main (string[])

I then added a symbolic link from /usr/lib/libmysqlclient.so to
/usr/lib/libmySQL.so using

ln -s libmysqlclient.so libmySQL.so

Now executing TestMySqlExecuteReader.cs I get the following exception:

Unhandled Exception: System.EntryPointNotFoundException: mysql_connect
in <0x0005c> (wrapper managed-to-native) Mono.Data.MySql.MySql:Connect
(intptr,string,string,string,string,uint,string,uint)
in <0x0017f> Mono.Data.MySql.MySqlConnection:Open ()
in <0x0004f> (wrapper remoting-invoke-with-check)
Mono.Data.MySql.MySqlConnection:Open ()
in <0x00093> TestSystemDataSqlClient.TestSqlDataReader:Main (string[])

What should I do to make the program run correctly?

Regards,
Roopa

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