Lazarus
Programming => General => Topic started by: tintinux on November 16, 2019, 10:44:47 am
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Hi
I create an empty console application and if I add to the project the requirement for some third party packages (e.g zcomponent from ZeosLib, or pack_powerpdf, or others), it compiles but ends with "Error: Error while linking".
Of course, I have no problem with these packages in a normal Application using Forms and LCL.
I guess that those packages are containing or referring somethings not suitable for console applications. However, even with packages containing no register functions and no references to UI stuff, I get the issue.
So, my question is how I can discover what is wrong in this packages.
Thanks for hints
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Right-click on the message in the Messages window and choose Copy->Copy All/Original Messages to Clipboard
This gives you a complete (unfiltered) list of messages to inspect.
Often you will then discover which specific library/libraries is/are not found at the linking stage, etc.
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Open the package in the IDE ("Package" > "Open package file (*.lpk)"). When you see "LCL" among the "Required packages" you usually are out of luck in a console program. Sometimes libraries are split into sub-packages. The main fpspreadsheet package (laz_fpspreadsheet) does not require LCL while laz_fpspreadsheet_visual does.
- ZEOS: zcore.lpk requires LCL :(
- powerpdf: pack_powerpdf.lpk requires LCL :(
For pdf generation you could try fcl-pdf which comes with the fpc installation (included in fcl).
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you could try fcl-pdf
Do you know if fcl-pdf can be used by lazreport ?
Or by another report generator, although I would not be happy to make again a number of reports...
Thanks