Hello, I tried to make a shared library with one function in it. I was able to build the shared lib with no errors and load it into root. I just could not execute the function in the interpreter. This is the root interpreter interaction. The .h, .C and a snippet of the Makefile are below. Thank you in advance for your help. Chris root [0] gSystem->Load("libcuber.so"); root [1] Double_t x,y; root [2] x =5.0; root [3] y = cuber(x); Error: No symbol null in current scope FILE:/tmp/09951daa LINE:1 root [4] The cuber.h file was #ifndef __CUBER_H #define __CUBER_H #include "Rtypes.h" Double_t cuber(Double_t x); #endif The cuber.C file was #include "Rtypes.h" Double_t cuber(Double_t x) { Double_t retvar = x*x*x; return retvar; } I made everything with the usual procedure cuberdict.C: cuber.C cuber.h echo "generating cuber dictionary" rootcint cuberdict.C -c $(INCLUDE) $(ROOTOBJ) cuber.h cuberdict.o: cuberdict.C $(CXX) -c $(CXXFLAGS) cuberdict.C cuber.o: cuber.C cuber.h Makefile $(CXX) -c $(CXXFLAGS) $(ROOTOBJ) cuber.C libcuber: cuber.o cuberdict.o $(LD) $(LDFLAGS) $(SOFLAGS) cuber.o cuberdict.o $(GLIBS) \ -o libcuber.so The Makefile definitions were unchanged since successfully putting classes into a shareled lib. ================================================================= = = = Chris Jillings = = Department of Physics phone/voice mail: (613) 545-6000x4805 = = Queen's University fax: (613) 545-6813 = = Kingston, Ontario email: chris@sno.phy.queensu.ca = = Canada, K7L 3N6 web: http://sno.phy.queensu.ca = = = =================================================================
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