Up until a few days ago I was using my service daemon app (X) to launch a console application (Y) worked flawlessly. The service daemon monitors for crashes and scale and can create did a trunk update to both FPC and Lazarus and App Y got a bunch of linker errors (see below) so I included interfaces unit and (Y) builds just fine.

If terminal execution with parameters (Y) enters the program loop :-) if executed from a Desktop App TProcess (Y) enters the program loop. :-) If executed (X) inside a Service Daemon TProcess (Y) zombies and never enters the program loop :-(

The service daemon is mission critical to my project and this is a pretty serious issue.

Errors when I try to build Process app without Interfaces unit :

Options changed, recompiling clean with -B
/usr/bin/ld: warning: link.res contains output sections; did you forget -T? /Developer/Lazarus/lcl/units/x86_64-linux/wsimglist.o: In function `REGISTERCUSTOMIMAGELIST':
/Developer/Lazarus/lcl//widgetset/wsimglist.pp:266: undefined reference to `WSRegisterCustomImageList'
/Developer/Lazarus/lcl/units/x86_64-linux/wsmenus.o: In function `REGISTERMENUITEM':
/Developer/Lazarus/lcl//widgetset/wsmenus.pp:201: undefined reference to `WSRegisterMenuItem'
/Developer/Lazarus/lcl/units/x86_64-linux/wsmenus.o: In function `REGISTERMENU':
/Developer/Lazarus/lcl//widgetset/wsmenus.pp:212: undefined reference to `WSRegisterMenu'
/Developer/Lazarus/lcl/units/x86_64-linux/wsmenus.o: In function `REGISTERMAINMENU':
/Developer/Lazarus/lcl//widgetset/wsmenus.pp:223: undefined reference to `WSRegisterMainMenu'
/Developer/Lazarus/lcl/units/x86_64-linux/wsmenus.o: In function `REGISTERPOPUPMENU':
/Developer/Lazarus/lcl//widgetset/wsmenus.pp:234: undefined reference to `WSRegisterPopupMenu'
/Developer/Lazarus/lcl/units/x86_64-linux/wscontrols.o: In function `REGISTERDRAGIMAGELIST':
/Developer/Lazarus/lcl//widgetset/wscontrols.pp:430: undefined reference to `WSRegisterDragImageList'
/Developer/Lazarus/lcl/units/x86_64-linux/wscontrols.o: In function `REGISTERLAZACCESSIBLEOBJECT':
/Developer/Lazarus/lcl//widgetset/wscontrols.pp:440: undefined reference to `WSRegisterLazAccessibleObject'
/Developer/Lazarus/lcl/units/x86_64-linux/wscontrols.o: In function `REGISTERCONTROL':
/Developer/Lazarus/lcl//widgetset/wscontrols.pp:450: undefined reference to `WSRegisterControl'
/Developer/Lazarus/lcl/units/x86_64-linux/wscontrols.o: In function `REGISTERWINCONTROL':
/Developer/Lazarus/lcl//widgetset/wscontrols.pp:460: undefined reference to `WSRegisterWinControl'
/Developer/Lazarus/lcl/units/x86_64-linux/wscontrols.o: In function `REGISTERGRAPHICCONTROL':
/Developer/Lazarus/lcl//widgetset/wscontrols.pp:470: undefined reference to `WSRegisterGraphicControl'
/Developer/Lazarus/lcl/units/x86_64-linux/wscontrols.o: In function `REGISTERCUSTOMCONTROL':
/Developer/Lazarus/lcl//widgetset/wscontrols.pp:481: undefined reference to `WSRegisterCustomControl'
/Developer/Lazarus/lcl/units/x86_64-linux/wsforms.o: In function `REGISTERSCROLLINGWINCONTROL':
/Developer/Lazarus/lcl//widgetset/wsforms.pp:269: undefined reference to `WSRegisterScrollingWinControl'
/Developer/Lazarus/lcl/units/x86_64-linux/wsforms.o: In function `REGISTERSCROLLBOX':
/Developer/Lazarus/lcl//widgetset/wsforms.pp:280: undefined reference to `WSRegisterScrollBox'
/Developer/Lazarus/lcl/units/x86_64-linux/wsforms.o: In function `REGISTERCUSTOMFRAME':
/Developer/Lazarus/lcl//widgetset/wsforms.pp:291: undefined reference to `WSRegisterCustomFrame'
/Developer/Lazarus/lcl/units/x86_64-linux/wsforms.o: In function `REGISTERCUSTOMFORM':
/Developer/Lazarus/lcl//widgetset/wsforms.pp:302: undefined reference to `WSRegisterCustomForm'
/Developer/Lazarus/lcl/units/x86_64-linux/wsforms.o: In function `REGISTERHINTWINDOW':
/Developer/Lazarus/lcl//widgetset/wsforms.pp:313: undefined reference to `WSRegisterHintWindow'
/Developer/Lazarus/lcl/units/x86_64-linux/wsstdctrls.o: In function `REGISTERCUSTOMSCROLLBAR':
/Developer/Lazarus/lcl//widgetset/wsstdctrls.pp:654: undefined reference to `WSRegisterCustomScrollBar'
/Developer/Lazarus/lcl/units/x86_64-linux/wsstdctrls.o: In function `REGISTERCUSTOMGROUPBOX':
/Developer/Lazarus/lcl//widgetset/wsstdctrls.pp:665: undefined reference to `WSRegisterCustomGroupBox'
/Developer/Lazarus/lcl/units/x86_64-linux/wsstdctrls.o: In function `REGISTERCUSTOMCOMBOBOX':
/Developer/Lazarus/lcl//widgetset/wsstdctrls.pp:676: undefined reference to `WSRegisterCustomComboBox'
/Developer/Lazarus/lcl/units/x86_64-linux/wsstdctrls.o: In function `REGISTERCUSTOMLISTBOX':
/Developer/Lazarus/lcl//widgetset/wsstdctrls.pp:687: undefined reference to `WSRegisterCustomListBox'
/Developer/Lazarus/lcl/units/x86_64-linux/wsstdctrls.o: In function `REGISTERCUSTOMEDIT':
/Developer/Lazarus/lcl//widgetset/wsstdctrls.pp:698: undefined reference to `WSRegisterCustomEdit'
/Developer/Lazarus/lcl/units/x86_64-linux/wsstdctrls.o: In function `REGISTERCUSTOMMEMO':
/Developer/Lazarus/lcl//widgetset/wsstdctrls.pp:709: undefined reference to `WSRegisterCustomMemo'
/Developer/Lazarus/lcl/units/x86_64-linux/wsstdctrls.o: In function `REGISTERBUTTONCONTROL':
/Developer/Lazarus/lcl//widgetset/wsstdctrls.pp:725: undefined reference to `WSRegisterButtonControl'
/Developer/Lazarus/lcl/units/x86_64-linux/wsstdctrls.o: In function `REGISTERCUSTOMBUTTON':
/Developer/Lazarus/lcl//widgetset/wsstdctrls.pp:739: undefined reference to `WSRegisterCustomButton'
/Developer/Lazarus/lcl/units/x86_64-linux/wsstdctrls.o: In function `REGISTERCUSTOMCHECKBOX':
/Developer/Lazarus/lcl//widgetset/wsstdctrls.pp:750: undefined reference to `WSRegisterCustomCheckBox'
/Developer/Lazarus/lcl/units/x86_64-linux/wsstdctrls.o: In function `REGISTERTOGGLEBOX':
/Developer/Lazarus/lcl//widgetset/wsstdctrls.pp:763: undefined reference to `WSRegisterToggleBox'
/Developer/Lazarus/lcl/units/x86_64-linux/wsstdctrls.o: In function `REGISTERRADIOBUTTON':
/Developer/Lazarus/lcl//widgetset/wsstdctrls.pp:774: undefined reference to `WSRegisterRadioButton'
/Developer/Lazarus/lcl/units/x86_64-linux/wsstdctrls.o: In function `REGISTERCUSTOMSTATICTEXT':
/Developer/Lazarus/lcl//widgetset/wsstdctrls.pp:787: undefined reference to `WSRegisterCustomStaticText'
/Developer/Lazarus/lcl/units/x86_64-linux/wsstdctrls.o: In function `REGISTERCUSTOMLABEL':
/Developer/Lazarus/lcl//widgetset/wsstdctrls.pp:798: undefined reference to `WSRegisterCustomLabel'
/Developer/Lazarus/lcl/units/x86_64-linux/wsbuttons.o: In function `REGISTERCUSTOMBITBTN':
/Developer/Lazarus/lcl//widgetset/wsbuttons.pp:113: undefined reference to `WSRegisterCustomBitBtn'
/Developer/Lazarus/lcl/units/x86_64-linux/wsbuttons.o: In function `REGISTERCUSTOMSPEEDBUTTON':
/Developer/Lazarus/lcl//widgetset/wsbuttons.pp:125: undefined reference to `WSRegisterCustomSpeedButton'
/Developer/Lazarus/lcl/units/x86_64-linux/wsextctrls.o: In function `REGISTERSHAPE':
/Developer/Lazarus/lcl//widgetset/wsextctrls.pp:228: undefined reference to `WSRegisterShape'
/Developer/Lazarus/lcl/units/x86_64-linux/wsextctrls.o: In function `REGISTERCUSTOMSPLITTER':
/Developer/Lazarus/lcl//widgetset/wsextctrls.pp:239: undefined reference to `WSRegisterCustomSplitter'
/Developer/Lazarus/lcl/units/x86_64-linux/wsextctrls.o: In function `REGISTERPAINTBOX':
/Developer/Lazarus/lcl//widgetset/wsextctrls.pp:250: undefined reference to `WSRegisterPaintBox'
/Developer/Lazarus/lcl/units/x86_64-linux/wsextctrls.o: In function `REGISTERCUSTOMIMAGE':
/Developer/Lazarus/lcl//widgetset/wsextctrls.pp:261: undefined reference to `WSRegisterCustomImage'
/Developer/Lazarus/lcl/units/x86_64-linux/wsextctrls.o: In function `REGISTERBEVEL':
/Developer/Lazarus/lcl//widgetset/wsextctrls.pp:272: undefined reference to `WSRegisterBevel'
/Developer/Lazarus/lcl/units/x86_64-linux/wsextctrls.o: In function `REGISTERCUSTOMRADIOGROUP':
/Developer/Lazarus/lcl//widgetset/wsextctrls.pp:283: undefined reference to `WSRegisterCustomRadioGroup'
/Developer/Lazarus/lcl/units/x86_64-linux/wsextctrls.o: In function `REGISTERCUSTOMCHECKGROUP':
/Developer/Lazarus/lcl//widgetset/wsextctrls.pp:294: undefined reference to `WSRegisterCustomCheckGroup'
/Developer/Lazarus/lcl/units/x86_64-linux/wsextctrls.o: In function `REGISTERCUSTOMLABELEDEDIT':
/Developer/Lazarus/lcl//widgetset/wsextctrls.pp:305: undefined reference to `WSRegisterCustomLabeledEdit'
/Developer/Lazarus/lcl/units/x86_64-linux/wsextctrls.o: In function `REGISTERCUSTOMPANEL':
/Developer/Lazarus/lcl//widgetset/wsextctrls.pp:316: undefined reference to `WSRegisterCustomPanel'
/Developer/Lazarus/lcl/units/x86_64-linux/wsextctrls.o: In function `REGISTERCUSTOMTRAYICON':
/Developer/Lazarus/lcl//widgetset/wsextctrls.pp:333: undefined reference to `WSRegisterCustomTrayIcon'
/Developer/Lazarus/lcl/units/x86_64-linux/wsdialogs.o: In function `REGISTERCOMMONDIALOG':
/Developer/Lazarus/lcl//widgetset/wsdialogs.pp:140: undefined reference to `WSRegisterCommonDialog'
/Developer/Lazarus/lcl/units/x86_64-linux/wsdialogs.o: In function `REGISTERFILEDIALOG':
/Developer/Lazarus/lcl//widgetset/wsdialogs.pp:151: undefined reference to `WSRegisterFileDialog'
/Developer/Lazarus/lcl/units/x86_64-linux/wsdialogs.o: In function `REGISTEROPENDIALOG':
/Developer/Lazarus/lcl//widgetset/wsdialogs.pp:162: undefined reference to `WSRegisterOpenDialog'
/Developer/Lazarus/lcl/units/x86_64-linux/wsdialogs.o: In function `REGISTERSAVEDIALOG':
/Developer/Lazarus/lcl//widgetset/wsdialogs.pp:173: undefined reference to `WSRegisterSaveDialog'
/Developer/Lazarus/lcl/units/x86_64-linux/wsdialogs.o: In function `REGISTERSELECTDIRECTORYDIALOG':
/Developer/Lazarus/lcl//widgetset/wsdialogs.pp:184: undefined reference to `WSRegisterSelectDirectoryDialog'
/Developer/Lazarus/lcl/units/x86_64-linux/wsdialogs.o: In function `REGISTERCOLORDIALOG':
/Developer/Lazarus/lcl//widgetset/wsdialogs.pp:195: undefined reference to `WSRegisterColorDialog'
/Developer/Lazarus/lcl/units/x86_64-linux/wsdialogs.o: In function `REGISTERCOLORBUTTON':
/Developer/Lazarus/lcl//widgetset/wsdialogs.pp:206: undefined reference to `WSRegisterColorButton'
/Developer/Lazarus/lcl/units/x86_64-linux/wsdialogs.o: In function `REGISTERFONTDIALOG':
/Developer/Lazarus/lcl//widgetset/wsdialogs.pp:217: undefined reference to `WSRegisterFontDialog'
auProcess.lpr(397,1) Error: Error while linking
auProcess.lpr(397,1) Fatal: There were 1 errors compiling module, stopping -------------- next part --------------
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You should not include this unit. That's an error.

It means you have a LCL component somewhere in your app, that's what's causing this.

Michael.

Yes.

The widgetset independent parts have been moved to a package of its own: LazUtils.
Open the project inspector and replace the dependency LCL with LazUtils. Do the same for any of your packages that works without gui.

Mattias

> You should not include this unit. That's an error.

Ok.

It means you have a LCL component somewhere in your app, that's what's causing this.

Ok. But everything was completely fine until the latest svn update. While there is no widget components created some obscure unit may tap into an LCL type or constant. Which most likely should have been removed during optimization.

Ok, I just replaced LCL dependency with LazUtils and it compiled and works just like before! Thanks. I recommend that you make sure that when a new project is created it uses LazUtils as a dependency for console apps - otherwise other people may run into this problem and not understand why their console apps behave strangely.

Thanks guys!!!
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No, console applications don't need LazUtils. Dependencies should only be added when needed.

Regards,
Sven

Andrew Brunner hat am 7. M?rz 2012 um 15:12
geschrieben:

Strange.
I would have expected that you get a compilation error about some LCL unit can not be found.
The LCL only adds -dLCL and -dLCLwidgetset. And under OS X some linker options.
Maybe you use these defines somewhere?

When you create a console project, the LCL is not added. This was always so.

Mattias
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