[ROOT] problems compiling -- undefined references

From: Chris Hayward (cchaywar@umich.edu)
Date: Wed Jul 09 2003 - 15:21:12 MEST


Hello all,
I'm trying to compile a program I have written and tested using ROOT. I am
using g++ to compile. I first tried modifying the Makefile provided by the
ROOT team, but I get the error messages:

Makefile:32: *** missing separator.  Stop.

So, I tried using just the command:

g++ Platforms.cxx

but I get many undefined references, though I've included all the proper
libraries. Here are the errors:

/tmp/cc8ouf7p.o(.text+0x42): undefined reference to `TFile::TFile(char
const *, char const *, char const *, int)'
/tmp/cc8ouf7p.o(.text+0x60): undefined reference to `TObject::operator
delete(void *)'
/tmp/cc8ouf7p.o(.text+0xe5): undefined reference to `TObject::operator
delete(void *)'
/tmp/cc8ouf7p.o: In function `ReadChamber(char const *, TTree *)':
/tmp/cc8ouf7p.o(.text+0x16f): undefined reference to `TObject::operator
delete(void *)'
/tmp/cc8ouf7p.o(.text+0x34c): undefined reference to `Form(char const
*,...)'
/tmp/cc8ouf7p.o(.text+0x6ff): undefined reference to `TObject::operator
delete(void *)'
/tmp/cc8ouf7p.o: In function `__static_initialization_and_destruction_0':
/tmp/cc8ouf7p.o(.text+0xe22): undefined reference to
`ROOT::GenerateInitInstance(Chamber const *)'
/tmp/cc8ouf7p.o(.text+0xe2d): undefined reference to
`ROOT::TGenericClassInfo::SetImplFile(char const *, int)'
/tmp/cc8ouf7p.o: In function `TObject::operator new(unsigned int)':
/tmp/cc8ouf7p.o(.gnu.linkonce.t.__nw__7TObjectUi+0xe): undefined reference
to `TStorage::ObjectAlloc(unsigned int)'
/tmp/cc8ouf7p.o: In function `Chamber::Chamber(void)':
/tmp/cc8ouf7p.o(.Chamber::gnu.linkonce.t.(void)+0x10): undefined reference
to `TObject::TObject(void)'
/tmp/cc8ouf7p.o(.Chamber::gnu.linkonce.t.(void)+0x1d): undefined reference
to `Chamber virtual table'


I am attaching the Makefile, and below are my include statements. Please
help me understand how to compile code that uses ROOT libraries.

Thanks,
Chris

#include <iostream.h>
#include <fstream.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>

#include </afs/cern.ch/sw/root/v3.05.05/rh73_gcc296/root/include/TCint.h>
#include </afs/cern.ch/sw/root/v3.05.05/rh73_gcc296/root/include/TObject.h>
#include </afs/cern.ch/sw/root/v3.05.05/rh73_gcc296/root/include/TTree.h>
#include </afs/cern.ch/sw/root/v3.05.05/rh73_gcc296/root/include/TFile.h>

#include </afs/cern.ch/user/x/xtomo/chris/Chamber.cxx>






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