Michael Wild wrote:
On 13. Apr, 2010, at 16:19 , kent williams wrote:

I've descended into a confusing morass of complicated CMake macros,
and I need help getting out!

The situation is this:  I didn't have much trouble building VTK with
QT as long as I stuck with Carbon.  Now I'm running into some serious
problems (phantom dependencies on X11 libraries, for starters) when I
try to use QT/Cocoa -- which is necessary, according to my boss, to
build on OS X 10.6.

So does anyone have a successful example of building VTK against QT
using ExternalProject?

I ran into this myself, and it was a bug in the CMake files for VTK. VTK should use the right Cocoa/Carbon that Qt was built with. The fix for this was in ParaView. I moved that fix into VTK. So, VTK should do the right thing now.

Dave P. pointed to that code here:
VTK/CMakeLists:306

1.554 (hoffman 17-Mar-10): SET(VTK_USE_CARBON OFF CACHE BOOL "Bu
ild VTK with Carbon" FORCE)
1.554        (hoffman  17-Mar-10):         SET(VTK_USE_COCOA ON CACHE


-Bill

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