Problem with multiply defined objects

I'm having trouble compiling one of my programs. Whenever I compile, the following message appears:

Code:

g++ -g uniformTest.cpp EventGen.o -I/sunshine/homes/bvz/cs302/src -I/sunshine/homes/bvz/cs302/include /sunshine/homes/bvz/cs302/objs/lib302.a -o uniform
ld: fatal: symbol `histogramEventGenerator::next(void)' is multiply-defined:
        (file /var/tmp/ccqHa2jf.o type=FUNC; file EventGen.o type=FUNC);
ld: fatal: symbol `uniformEventGenerator::uniformEventGenerator(double)' is multiply-defined:
        (file /var/tmp/ccqHa2jf.o type=FUNC; file EventGen.o type=FUNC);
ld: fatal: symbol `uniformEventGenerator::next(void)' is multiply-defined:
        (file /var/tmp/ccqHa2jf.o type=FUNC; file EventGen.o type=FUNC);
ld: fatal: symbol `histogramEventGenerator::histogramEventGenerator(string)' is multiply-defined:
        (file /var/tmp/ccqHa2jf.o type=FUNC; file EventGen.o type=FUNC);
ld: fatal: File processing errors. No output written to uniform
collect2: ld returned 1 exit status
*** Error code 1
make: Fatal error: Command failed for target `uniform'

The files that seem to be messed up are also as follows:

Code:

#include <iostream>
#include "EventGen.h"
#include "Fields.h"

uniformEventGenerator::uniformEventGenerator(double m)
{
    mean = m;
}

double uniformEventGenerator::next()
{
    return drand48()*mean*2;
}

histogramEventGenerator::histogramEventGenerator(string filename)
{
    Fields *f;
    f = new Fields(filename);
    double x;
    double y;
    total = 0;

    while( f->get_line() >= 0)
    {
        sscanf(f->get_field(0).c_str(), "%lf", &x);
        sscanf(f->get_field(1).c_str(), "%lf", &y);

        total = total + y;
        tree.insert(total, new_jval_d(x));
    }
}

double histogramEventGenerator::next()
{
    double uniform;
    double historand;

    uniform = drand48()*total;

    tree.find(uniform);
    historand = (double)tree.getVal().d;

    return historand;
}

Code:

#ifndef _EVENTGEN_H_
#define _EVENTGEN_H_

#include "rbTree.h"
#include "mystring.h"

class histogramEventGenerator {
  public:
    histogramEventGenerator(string filename);
    double next();   // produce the next random number
  protected:
    rbTree<double> tree;
    double total;
};

class uniformEventGenerator {
  public:
    uniformEventGenerator(double mean);
    double next();   // produce the next random number
  protected:
    double mean;
};

#endif

Code:

EXE = uniform histogram bankSimulator pQueue2 pQueue3

all: $(EXE)

LIB = /sunshine/homes/bvz/cs302/include
SRC = /sunshine/homes/bvz/cs302/src
OBJS = /sunshine/homes/bvz/cs302/objs/

uniform: EventGen.o
    g++ -g uniformTest.cpp EventGen.o -I$(SRC) -I$(LIB) $(OBJS)lib302.a -o uniform
histogram: EventGen.o
    g++ -g histogramTest.cpp EventGen.o -I$(SRC)  -I$(LIB) $(OBJS)lib302.a -o histogram
bankSimulator: EventGen.o
    g++ -g bankSimulator.cpp EventGen.o pQueue2.o -I$(SRC) -I$(LIB) $(OBJS)lib302.a -o bankSimulator
pQueue2: pQueue2.o
    g++ -g sortem.cpp pQueue2.o -I$(SRC) -I$(LIB) $(OBJS)lib302.a -o pQueue2
pQueue2.o: pQueue2.cpp
    g++ -c -g pQueue2.cpp -I$(LIB) -I$(SRC)
pQueue3: pQueue3.o
    g++ -g sortem.cpp pQueue3.o -I$(SRC) -I$(LIB) $(OBJS)lib302.a -o pQueue3
pQueue3.o: pQueue3.cpp
    g++ -c -g pQueue3.cpp -I$(LIB) -I$(SRC)
EventGen.o: EventGen.cpp
    g++ -c -g EventGen.cpp -I$(LIB) -I$(SRC)
clean:
    rm -f core *.o $(EXE) a.out

Any help would be most welcome. If there's anything else you need to diagnose the problem, I can likely provide it. Thanks!

You're not trying to include cpp files by any chance are you?

Ah, yes, that's likely the problem. I'd not considered that.

Thanks!