[vtkusers] Problem with VTK on Linux

[Daniel J. Blezek, Ph.D.]

Ian,

  This sounds less like a VTK issue, and more like a template/library
problem.  I would suggest writing a small program that links to
VizmoLib.so.  This will help you track down any undefined symbols.
Another issue is the perhaps the SGI compiler instanciates more templates
than gcc.

-dan

On Thu, 20 Jul 2000, Ian Remmler wrote:

> Hi,
> 
> I am having an odd problem with a VTK application we are trying to port to
> Linux.  The application runs fine on Irix, but it doesn't like Linux.
> 
> Disclaimer:  I have no experience with VTK or our application, and the
> person who wrote the application is long gone, so please forgive any
> ignorance on my part.  I just want to get the thing to work.
> 
> As I said the app. works under Irix, using SGI's compiler.  It compiles
> fine on Linux, but when I try to run it, it won't load our helper c++
> library.  It says...
> 
> Error in startup script: couldn't load file "./VizmoLib.so":
> ./VizmoLib.so: undefined symbol: GetElt__Ct4List1Z14vizRobotObjectUl
>     while executing
> "load ./VizmoLib.so VizmoLib"
>     ("uplevel" body line 1)
>     invoked from within
> "uplevel #0 $auto_index($name)"
>     (procedure "auto_load" line 13)
>     invoked from within
> "auto_load $name [uplevel 1 {namespace current}]"
>     (autoloading "VizmoLib")
>     invoked from within
> "VizmoLib"
>     (file "./vizmo" line 8)
> 
> The symbol GetElt__Ct4List1Z14vizRobotObjectUl translates to... 
> List<vizRobotObject>::GetElt(unsigned long) const
> ...if that helps.  I thought perhaps a problem with templates?
> 
> Actually, it used to be an overloaded [] operator.  I thought that might
> be what it didn't like, so I changed it to a normal method GetElt(), but
> it still barfs.
> 
> The script "vizmo" that we use to launch the app follows...
> 
> #!/usr/local/bin/vtk
> set dir .
> lappend auto_path $dir "/home/user/xxx/Vizmo"
> package require VizmoLib
> puts stdout "Please wait: Vizmo 3D initializing..."
> VizmoLib
> source /home/user/xxx/dsmft/Vizmo/VizmoView.tcl
> set userProfile "~/vizmo.init"
> 
> if [catch { source $userProfile} initResult ] {
>         puts stdout "No User Profile specified..."
> }
> puts stdout "User Profile loaded..."
> 
> Here's what our Linux setup looks like:
> 
> System:		Pentium III
> OS:		Redhat 6.1 with some upgrades
> gcc:		2.95.1
> binutils:	2.9.5.0.22
> glibc:		2.1.2
> vtk:		CVS as of about a week ago
> tcl/tk:		8.0 and 8.3
> 
> If any other info would be helpful, I'm sure I can dig it up.
> 
> Thanks,
> 	- Ian.
> 
> 
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--
Daniel Blezek, Ph.D.
blezek at crd.ge.com
Computer Graphics and Systems Program
Electronic Systems Lab
GE Corporate Research & Development