Using Octave from C++

[John W. Eaton]

On 22-Feb-2000, Dejan Beznec <address@hidden> wrote:

| Hello!
| I have browsed all the documentation includede in the source
| distribution of Octave 2.0.16 and I couldn't find satisfactory answer.
| 
| Is it possible to use Octave functions and data types from a standalone
| C++ program (not vice versa)?
| For example:
| ----- test1.cc ------
| #include <octave/oct.h>
| 
| main(){
|  Matrix A;
| }
| ---------------------
| I tried to compile it with:
| g++ -o test1 test1.cc -loctave -lcruft -loctinterp
| 
| and it yielded the following error:
| /usr/local/lib/octave/liboctave.so: undefined reference to
| `append_history'
| /usr/local/lib/octave/liboctinterp.so: undefined reference to `dlerror'
| /usr/local/lib/octave/liboctinterp.so: undefined reference to
| `rl_instream'
| /usr/local/lib/octave/liboctinterp.so: undefined reference to
| `rl_read_init_file'
| /usr/local/lib/octave/libcruft.so: undefined reference to `do_lio'
| /usr/local/lib/octave/libcruft.so: undefined reference to `e_wsle'
| /usr/local/lib/octave/liboctinterp.so: undefined reference to
| `history_set_pos'
| /usr/local/lib/octave/liboctave.so: undefined reference to
| `write_history'
| 
| [Snip]
| 
| Is there some library I forgot to include, or I have misunderstood some
| major concept?

Unless you are using features of the interpreter, you don't need
liboctinterp.  But you may need other things that are referenced by
liboctave and libcruft, such as the Fortran libraries (system
dependent, but the list appears in the generated mkoctfile script)
readline, kpathsearch, and the dynamic linking library.

Eventually, I'd like to eliminate most of these dependencies so that,
for example, you don't have to link to readline unless you really need
it.

jwe



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