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CALL_EXTERNAL and C++ code [message #45055] Tue, 02 August 2005 10:29
Mathieu Malaterre is currently offline  Mathieu Malaterre
Messages: 32
Registered: July 2005
Member
Hello,

I am trying to get an idl application that used to work on win32 to
work on my linux (debian) box. Unfortunately I am getting:

% XMANAGER: Caught unexpected error from client application. Message
follows...
% CALL_EXTERNAL: Error loading sharable executable.
Symbol: watershed, File =
/home/mathieu/Projects/FarSight/bin/bin/lib3D_wtd.so

/usr/local/rsi/idl_6.1/bin/bin.linux.x86/libidl.so.6.1: undefined
symbol: watershed
% Execution halted at: WTDSEG 3207
/home/mathieu/Projects/FarSight/FarSight.pro
% GUI_EVENT 8550
/home/mathieu/Projects/FarSight/FarSight.pro
% XMANAGER_EVLOOP_STANDARD 478
/usr/local/rsi/idl_6.1/lib/xmanager.pro
% XMANAGER 708
/usr/local/rsi/idl_6.1/lib/xmanager.pro
% FARSIGHT 9253
/home/mathieu/Projects/FarSight/FarSight.pro
% $MAIN$


If I checked for the symbol:
$ nm /home/mathieu/Projects/FarSight/bin/bin/lib3D_wtd.so | c++filt|
grep watershed
0000519c T watershed(int, void**)


I am reading in parallel the document: External Development Guide
(edg.pdf), but there is no mention of problem *before* calling the function.

Does anyone knows what compile flags to use and which compiler to use on
linux, and if I can use shared lib ? I could not find much in the
newsgroup except:

http://groups-beta.google.com/group/comp.lang.idl-pvwave/bro wse_thread/thread/57d81859e3d3a502/191ac3c2f11d2bb8

But again this refer to C not C++ which has a completely different name
mangling...


Thanks for your help,
Mathieu
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