Undefined reference

Hey guys, first I'd like to thank you for all your help in the past. Anyway, when I compile I get a whole bunch of "undefined reference to" and then a function call. I have these functions defined, and the appropriate files included. For example
error:
"main.o(.text+0x235):/home/bbare/converting/c/main.cpp:68: undefined reference to `Convert_and_Score(int, double, int, double, double&)'"

in main I have #include "In_out.h"
In_out.h:

Code:

void Convert_and_Score(int chrom_num1, double cM_percent1, int chrom_num2, double cM_percent2, double &outscore);

oh ya
the call in main that the error is referencing:

Code:

    double score;
    double fChromNumOne = PGAGetRealAllele(ctx, p, pop, 1);
    double fChromNumTwo = PGAGetRealAllele(ctx, p, pop, 3);
    int iChromNumOne = (int)(fChromNumOne * NUM_CHROM);
    int iChromNumTwo = (int)(fChromNumTwo * NUM_CHROM);

    double loc1 = PGAGetRealAllele(ctx, p, pop, 2);
    double loc2 = PGAGetRealAllele(ctx, p, pop, 4);

    score = 0;
    Convert_and_Score(iChromNumOne, loc1, iChromNumTwo, loc2, score);

and those PGA functions are also undefined references yet I have the file that they are defined in included...

Okay, you have the header...but are those functions defined anywhere? A header should only give you the declarations, not the definitions, so you need to link with a library or an implementation source file.

Sorry, yes, the declarations are in the header. The defintions are in the file of the same name just .cpp extension.
Makefile:

Code:

In_out.o: In_out.h In_out.cpp
        g++ $(FLAGS) -c In_out.cpp

...

ga_ee: math_utils.o calc_subs.o EM.o EE_utils.o In_out.o main.o
        g++ math_utils.o calc_subs.o EM.o EE_utils.o main.o -o ga_ee

> g++ math_utils.o calc_subs.o EM.o EE_utils.o main.o -o ga_ee
I notice you don't have In_out.o included on this line. It is included on the line above this one however.

yay! stupid mistakes are so much better. easier to fix!