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João Paulo Cercal

Staff Security Engineer at LastPass

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Installing ZeosLib in Delphi XE2

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After having difficulty installing ZeosLib in Delphi XE2, I decided to share “the way through”.

The ZeosLib Library

The ZeosLib library consists of a set of tools so you can have a native database connection, meaning a connection without auxiliary drivers such as ODBC.

ZeosLib is an open-source project, its installation isn’t that complex, but here’s the recipe, just follow the steps without skipping “any ingredient”.

Downloading the ZeosLib Library

Well, first download the latest version of ZeosLib directly from the Official SVN repository.

If you use SVN for version control, you can use the following command:

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$ svn checkout https://zeoslib.svn.sourceforge.net/svnroot/zeoslib/trunk/ zeoslib

If you use GIT for version control, you can use the following command:

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$ git svn clone --revision HEAD https://zeoslib.svn.sourceforge.net/svnroot/zeoslib/trunk/ zeoslib

Adding the ZeosLib directory to Delphi’s Library Path

Let’s add an environment variable in Windows, if you use Windows Seven like me, go to: Control Panel > System and Security > System. In the sidebar click “Advanced System Settings”, a window like this will appear:

Windows Seven - System Properties - Installing ZeosLib in Delphi XE2

Click the button identified in the figure as “Environment Variables…” and a window like the one below will appear:

Windows Seven - System Properties - Environment Variables Installing ZeosLib in Delphi XE2

Fill in the box with the following values:

  • Variable name: ZEOSLIB
  • Variable value: PATH-onde-você-baixou-o-zeoslib, in my case: D:\Delphi Components\zeoslib

Now we’ll add the ZeosLib path to Delphi’s Library Path, to do this, click the “Tools” menu and select “Options…”

A screen like the one below will appear:

Delphi XE2 - Library Path - Installing ZeosLib in Delphi XE2

Click the “…” button indicated in the figure above to add a new path.

Add the following paths:

  • $(ZEOSLIB)\packages\DelphiXE2
  • $(ZEOSLIB)\src\component
  • $(ZEOSLIB)\src\core
  • $(ZEOSLIB)\src\dbc
  • $(ZEOSLIB)\src\parsesql
  • $(ZEOSLIB)\src\plain

In the end, you’ll have a result similar to this: Delphi XE2 - Library Path - Directories Installing ZeosLib in Delphi XE2

Click “OK”, close the remaining windows and restart Delphi XE2.

Opening the ZeosLib project in Delphi XE2

With Delphi XE2’s Library Path configured, we’ll install ZeosLib. Click the button: File > Open Project… (Ctrl + F11)

Go to the folder where you downloaded ZeosLib, in my case: D:\Delphi Components\zeoslib. Then open the packages > ** DelphiXE2** directory and open the project called ZeosDbo.groupproj.

Compiling ZeosLib in Delphi XE2

You should compile the packages in the following order:

  • ZCore160.bpl
  • ZPlain160.bpl
  • ZParseSql160.bpl
  • ZDbc160.bpl
  • ZComponent160.bpl
  • ZComponentDesign160.bpl

The image below illustrates this process:

Delphi XE2 - ZeosLib - Compiling and Installing ZeosLib in Delphi XE2

After you compile all the packages, you can finally install it. Click the ZComponentDesign160.bpl package and select “Install”, as shown in the image below:

Delphi XE2 - ZeosLib - Installing ZeosLib in Delphi XE2

If everything goes well, a message like this will appear:

Delphi XE2 - ZeosLib - Installing ZeosLib in Delphi XE2

We’ve finished installing the library, restart Delphi XE2 and make good use of the ZeosLib component.

If you have questions or a problem with installation, leave us a comment.