[Paraview] Problem linking Cocoa pqWidgets

[Clinton Stimpson]

Did you use the CVS version of CMake?
FindQt4/UseQt don't put the extra dependencies in there anymore unless Qt is 
static.  So if pqWidgets uses Cocoa, it needs to link against the Cocoa 
framework.

Clint

On Wednesday 06 January 2010 01:35:39 pm Eric E. Monson wrote:
> Hello,
>
> On one of my machines I just switched over to Snow Leopard, so I did a
> fresh CVS grab of ParaView. I have Qt 4.5.3 built from source for Cocoa
> (x86 and x86_64 architectures), and I have been trying to build ParaView
> (i386;x86_64), but keep getting a linking error on the pqWidgets library:
>
> [ 90%] Built target QtTesting
> Linking CXX shared library ../../bin/libpqWidgets.dylib
> Undefined symbols:
>   "_objc_msgSend", referenced from:
>       pqProgressBarHelper::setProgress(int)    in pqProgressBarHelper.mm.o
>       pqProgressBarHelper::setProgress(int)    in pqProgressBarHelper.mm.o
>       pqProgressBarHelper::setProgress(int)    in pqProgressBarHelper.mm.o
> ld: symbol(s) not found
> collect2: ld returned 1 exit status
> Undefined symbols:
>   "_objc_msgSend", referenced from:
>       pqProgressBarHelper::setProgress(int)    in pqProgressBarHelper.mm.o
>       pqProgressBarHelper::setProgress(int)    in pqProgressBarHelper.mm.o
>       pqProgressBarHelper::setProgress(int)    in pqProgressBarHelper.mm.o
> ld: symbol(s) not found
>
> I found I can get past this if I add a "-framework Cocoa" to the linker
> line manually, so I think in ParaView3/Qt/Widgets/CMakeLists.txt maybe
> there should be another check added, something like (line 198):
>
>   if(VTK_USE_COCOA)
>     TARGET_LINK_LIBRARIES(pqWidgets "-framework Cocoa")
>   endif(VTK_USE_COCOA)
>
> The progress bar doesn't really work and I'm running into the "grayed out
> filters" that some others have mentioned (filters show up right after
> launching PV, I can generate or load a "source", and I can apply one
> filter, but then they disappear after that and won't come back), but at
> least PV compiled... :)
>
> Not sure if it's relevant, but in case it's helpful: On another machine
> with a very similar setup (Snow Leopard and x86,x86_64 Cocoa Qt 4.5.2 from
> source), but just CVS "update" and rebuild on an old checkout rather than a
> fresh one, I noticed that the pqWidgets_LIB_DEPENDS (and a bunch of other
> things) include ;general;-framework Carbon;general;-framework
> AppKit;general;-framework ApplicationServices;  The progress bar doesn't
> work on that version, either, but I don't get the "grayed out" filters
> problem.
>
> Thanks,
> -Eric
>
> ------------------------------------------------------
> Eric E Monson
> Duke Visualization Technology Group
>
>
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