linking

[John W. Eaton]

On  7-Apr-2010, Andy Buckle wrote:

| I have had trouble trying to link. I have made a simple example that
| illustrates the problem, and my ugly solution. Is is possible to avoid
| the system call to ar? (All files in the same directory).
| 
| file: b.h
| double b_fn(double in);
| 
| file: b.cpp
| #include "b.h"
| double b_fn(double in) {
|       return in*in;
| }
| 
| file: a.cpp
| #include <octave/oct.h>
| #include "b.h"
| 
| DEFUN_DLD (a, args, nargout,
| "no help available for this test fn") {
|       if (args.length() != 1) {
|               error("a: there must be 1 arg");
|               return octave_value_list();
|       }
|       double in=args(0).double_value();
|       double out=b_fn(in);
|       return octave_value(out);
| }
| 
| file: compile.m
| clear a b
| delete *.o
| delete *.oct
| delete *.a
| mkoctfile -c a.cpp
| mkoctfile -c b.cpp
| system('ar cr libb.a b.o')
| mkoctfile -L. -lb a.o

Did you try

  mkoctfile a.cpp b.cpp

?

jwe