Hi, You should link your library against the fortran library (I think this is where s_wsle comes from). Cheers, Philippe. _____ From: Ricardo Eusebi [mailto:eusebi@fnal.gov] Sent: Thursday, October 21, 2004 10:41 AM To: roottalk Cc: pcanal@fnal.gov Subject: relocation errors and invalid ELF error Hi, I'm (trying to) implement a Root C++ interface to the fortran program HDecay. I can succesfully create a executable that calls the proper fortran routines. However when trying to link to root everything seems to fail. I took a look at <http://root.cern.ch/root/HowtoCERNLIB.html> http://root.cern.ch/root/HowtoCERNLIB.html but that particular case refers to CERN routines compiled without the option Position Independent Code (whatever that means). So I essentially follow the third way in the above web page up to the step 2 exclusive. I do not recompile root, nor I want to. so when loading the libraries I get root [0] gSystem->Load("libHDecay.so") (int)0 root [1] HDecay a root [2] HDECAY_InputVars in = a.DefineInputs() root [3] BR_HC B = a.GetHiggsBR(120,in) /home/cdfsoft/products/root/v3_05_04dKCC_4_0/Linux+2.4/bin/root.exe: relocation error: /mnt/autofs/misc/people/eusebi/root_macros/./libHDecay.so: undefined symbol: read_hdec_ I thought that's because I didn't link the fortran libraries. So I added the libraries (hdecay/*.o) in the makefile libHDecay.so : HDecay.o hdecay/hdecay.o hdecay/haber.o hdecay/feynhiggs.o HDecayDict.o $(LD) $(SOFLAGS) $(LDFLAGS) $^ $(OutPutOpt) $@ This compiles fine again, but the error in root this time is not relocation but this : root [0] gSystem->Load("libHDecay.so") dlopen error: /mnt/autofs/misc/people/eusebi/root_macros/./libHDecay.so: undefined symbol: s_wsle Load Error: Failed to load Dynamic link library /mnt/autofs/misc/people/eusebi/root_macros/./libHDecay.so (int)(-1) *** Interpreter error recovered *** QUESTIONS : A- is this because the fortran libraries hdecay/*.o have not been compiled with the Position Independent Code option ? How do I compile with that option???? B- Is there away to circunvent this that do not require the recompilation of root ? At FermiLab we change root versions pretty often. Thanks a lot Ricardo -- -------------------------------------------------------------------- | Ricardo Eusebi | Office : CDF trailer 168-"O" | | High Energy Physics | Phone : (630) 840 8622 | | University of Rochester | email : eusebi@fnal.gov | -------------------------------------------------------------------- | Fermi National Accelerator Laboratory | | CDF - MS318 . PO Box 500 | | Batavia 60510, Illinois. | --------------------------------------------------------------------
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