Question

Delphi 'cannot resolve unit name' DBAccess, says "File not found: 'ZLibConst.dcu'

Asked by: rfwoolf

(I have attached an image)

I'm not good with knowing how Delphi knows about units and compiled packages etc...

I've uninstalled Interbase from the control panel, and have tried to remove Zeoslib from Delphi by a) Removing the folder from the library path, b) removing the folder from the browsing paths, c) Clicking 'Component -> install Component, and clicking on Zeoslib and clicking remove.

Around the same time I've added and installed IBDAC from Devart.
Now if I open a new applicaiton, drop a TIBCConnection component, everything's fine.
The moment I add a TIBCQuery component, it cannot compile and says "File not found: 'ZLibConst.dcu'

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    Delphi 'cannot resolve unit name' DBAccess, says "File not found: 'ZLibConst.dcu'

    Delphi 'cannot resolve unit name' DBAccess, says "File not found: 'ZLibConst.dcu'

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Asked On
2009-09-01 at 02:03:05ID24697314
Topics

Delphi Programming

,

Delphi Components

,

Delphi Database

Participating Experts
4
Points
500
Comments
7

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Answers

 

by: HypoPosted on 2009-09-01 at 04:05:49ID: 25230240

AFAIK the delphi compiler finds the units it compiles with from two lists of directories, the first is the Library Path which you'll find under Tools->Environment Options->Library and the second is the Projects Search Path which you'll find Project->Options->Directories->Conditionals->Search Path...
(This is how you find them in Delphi 7, in D2006 and later You'll find the Library Path under Tools->Options->Environment Options->Delphi Options->Library - Win32->Library Path)

When you get the kind of errors you have, you could always start to check that the files that the compiler can not find actually exists on your disk; and if they do then you should make sure that the path to these files exist in either the Library Path of Delphi or in the Search Path of your project...

If the files don't exist, then you probably have an incorrect installation of your components...

/Hypo

 

by: MvanderKooijPosted on 2009-09-01 at 04:21:53ID: 25230320

Another thhng is to check if you was using packages in the past. Using packages you do not need the source code in you're search path only the dcp file containing the dcu's in the package. When you normally compile with packages and start a new project without them you will get errors like this.

 

by: Geert_GruwezPosted on 2009-09-01 at 05:11:36ID: 25230674

rfwoolf

the 3 units (DBAccess, MemDS, IBC) are from the IBDAC component
or any of the DAC's components of DEVART

i dunno what zeoslib has to do with this

the 2 packages may be conflicting though ...

 

by: rfwoolfPosted on 2009-09-01 at 05:13:30ID: 25230689

Hmmm... Well thanks for the help guys, I will take note for the future, but I'm already re-installing delphi.
What a mission.

 

by: Geert_GruwezPosted on 2009-09-01 at 05:15:18ID: 25230702

Houston,
he has a problem

I hope you land well ...

 

by: senadPosted on 2009-09-09 at 13:51:22ID: 25295438

I had devart components conflict with devexpress in D9...

 

by: Geert_GruwezPosted on 2009-09-10 at 00:12:17ID: 25297899

the trial or the payed ?

Mine worked fine, at least for Oracle. (ODAC)

20120131-EE-VQP-002

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