Hans,
You forgot to add -lRint in your library list.
Rene Brun
Hans Wenzel wrote:
>
> Dear Rooters
>
> Alos congratulations for 20000 downloads. I have a small problem using
> the attached shell script i tried to generate the files so that i can
> call cern library functions within root as described on the root web
> page. Unfortunately I am getting the following messages.
>
> Note: operator new() masked 1c
> Note: operator delete() masked 1c
> /tmp/cca024911.o: In function `main':
> /home/wenzel/root/test/rootCERN.cxx:27: undefined reference to
> `TRint::TRint(char *, int *, char **, void *, int)'
>
> Any idea what I am doing wrong here?
>
> cheers and thanks in advance for the help.
>
> hans wenzel
>
> IEKP Karlsruhe.
>
> ---------------------------------------------------------------
> #! /bin/tcsh -f
> rm -f CERNfunctions.h CERNLinkDef.h rootCERN.cxx CERN.cxx
> #
> # create CERNfunctions.h
> #
> cat >! CERNfunctions.h << "EOF"
> #ifndef CERNfunctions_H
> #define CERNfunctions_H
>
> #ifndef ROOT_Rtypes
> #include "Rtypes.h"
> #endif
>
> extern "C" Float_t denlan_(Float_t *x);
>
> #endif
> "EOF"
> #
> # Create CERNLinkDef.h
> #
> cat >! CERNLinkDef.h << "EO"
> #ifdef __CINT__
> #pragma link off all globals;
> #pragma link off all classes;
> #pragma link off all functions;
>
> #pragma link C function denlan_;
>
> #endif
> "EO"
> #
> # create dictionary CERN.cxx
> #
> rootcint -f CERN.cxx -c CERNfunctions.h CERNLinkDef.h
> #
> # create rootCERN.cxx
> #
> cat >! rootCERN.cxx << "EOF2"
> /////////////////////////////////////////////////////////////////////////
> //
> // Main program rootCERN.cxx to call CERNLIB functions
> //
> /////////////////////////////////////////////////////////////////////////
> #include "TROOT.h"
> #include "TRint.h"
> #include <TROOT.h>
> #include <TApplication.h>
>
> #include "CERNfunctions.h"
>
> extern void InitGui();
> VoidFuncPtr_t initfuncs[] = { InitGui, 0 };
>
> TROOT root("Rint","The ROOT Interactive Interface", initfuncs);
>
> //______________________________________________________________________________
> int main(int argc, char **argv)
> {
> // dummy block to force the CERNLIB functions to be linked by C++
> if (0) {
> float x = 2.3;
> printf("denlan(x)=%g\n",denlan_(&x));
> }
>
> TRint *theApp = new TRint("Rint", &argc, argv, 0, 0);
> // TApplication *theApp= new TApplication("App", &argc, argv);
> // Init Intrinsics, build all windows, and enter event loop
> theApp->Run();
>
> delete theApp;
>
> return(0);
> }
> "EOF2"
> #
> #g++ -O -Wall -fPIC -I$ROOTSYS/include -c rootCERN.cxx CERN.cxx -o rootCERN.o
> # finally compile and link it
> #
> g++ -g -I$ROOTSYS/include rootCERN.cxx CERN.cxx -o rootCERN /usr/products/cern/v97a/lib/libmathlib.a -L$ROOTSYS/lib -lNew -lBase -lCint -lClib -lCont -lFunc -lGraf -lGraf3d -lHist -lHtml -lMatrix -lMeta -lMinuit -lNet -lPostscript -lProof -lTree -lUnix -lZip -lGpad -lGui -lGX11 -lX3d -L/usr/X11R6/lib -lXpm -lX11 -lg++ -lm -ldl -rdynamic
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