Charles Leggett writes: > > I just tried linking in a shared library to root, using the directions and > files as described in the "Extending ROOT with Shared Libraries and an Example > of Object I/O" tutorial #44. I'm able to make the library with no problems, but > when I try to load it into root with "gSystem.Load("event.sl")", I get the > error message: > > dlopen error: ./event.sl: undefined symbol: __tf7TObject > Load Error: Dynamic link library ./event.sl can not load > (int)(-1) > Charles: tell linker about ROOT libraries when linking `event.sl'. When you're linking a shared library which you later on intend to load in dynamically, make sure that all the external references therein are resolved at link time - this is the way dynamic loader works. - pasha
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