Joost van der Sluis wrote:
Hi all,
atm I have a nearly finished mysql.inc file that can be used with MySQL
v4.0 v4.1 and v5.0. Loaded dynamically and static.
It uses several defines to set the right MySQL version and to turn the
dynamically linking on or off.
Create 6 different units in packages/base/mysql - for each combination
one? (thus mysql40, mysql40dyn, mysql41, mysql41dyn, mysql50 and
mysql51dyn?)
But then, what to do with the MySQL-connection for sqldb? In principle
the only thing that has to be changes to use another MySQL-version is to
change the used unit. So, always use the TMysqlConn-component, but
changes the usage-clausule.
But how can this be handled by Lazarus? With the SQLDB-package only one
unit can be used. (Or else multiple types with the same name are
defined) Let the users manually change the usage-line if they want to
use a different MySQL-library-version?
FOr the sqldb package, let them add a define to the compiler options:
-dMYSQL40
or
-dMYSQL41
or
-dMYSQL50
That seems more user friendly than editing the uses clause.
In the source, change the uses clause, depending on the defines.
Vincent.
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