Re: How to call Octave/Matlab script from C++ in Ubuntu?

[c.]

On 10 Apr 2014, at 08:36, Kai Torben Ohlhus <address@hidden> wrote:

> On Thu, Apr 10, 2014 at 4:36 AM, kaatish <address@hidden> wrote:
> Hi,
> I have a bunch of related Octave/Matlab files out of which one of them
> contains a function that I need to call and use that result in a C++ program
> that I am writing on Ubuntu. I have Octave installed on this system so I'll
> be using Octave specific solutions to this problem.
> 
> I have installed the octave header file packages. I seem to get an error
> when writing this simple code.
> 
>     int main(int argc, const char *argv[])
>     {
>       octave_main(argc, (char**)argv, true);
>       ColumnVector sz(2);
>       sz(0) = 10;
>       sz(1) = 12;
>       octave_value_list functionArguments = octave_value(sz);
>       do_octave_atexit();
>       return 0;
>     }
> 
> The compilation command is
> 
>     g++ -L /usr/lib/octave/3.2.4 -I /usr/lib/octave-3.2.4 -loctinterp
> -loctave -loctave salone.cpp
> 
> The error that I get is
> 
>     /usr/bin/ld: /usr/lib/octave-3.2.4/liboctinterp.so: undefined reference
> to symbol 'Array<std::basic_string&lt;char, std::char_traits&lt;char>,
> std::allocator<char> > >::~Array()'
>     /usr/bin/ld: note: 'Array<std::basic_string&lt;char,
> std::char_traits&lt;char>, std::allocator<char> > >::~Array()' is defined in
> DSO /usr/lib/octave-3.2.4/liboctave.so so try adding it to the linker
> command line
>     /usr/lib/octave-3.2.4/liboctave.so: could not read symbols: Invalid
> operation
>     collect2: ld returned 1 exit status
> 
> Could someone please explain how to solve this? I have seen some example but
> they are about making a standalone problem, which does not seem to be what I
> am looking for. I just have a complicated Octave script which I want to use
> with a C++ program.
> 
> So, apart from solving this error, how do I do that? I could not find any
> documentation which was clear enough to help me do so.
> 
> Thanks.
> 
> 
> 
> --
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> http://octave.1599824.n4.nabble.com/How-to-call-Octave-Matlab-script-from-C-in-Ubuntu-tp4663554.html
> Sent from the Octave - General mailing list archive at Nabble.com.
> 
> _______________________________________________
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> 
> Hello,
> 
> You seem to have an older Octave version. Instead of g++ you should compile 
> your standalone-program with mkoctfile like described in [1]. Under Ubuntu it 
> is available in the package liboctave-dev [2].
> 
> HTH, Kai
> 
> [1] 
> https://www.gnu.org/software/octave/doc/interpreter/Standalone-Programs.html#Standalone-Programs
> [2] http://packages.ubuntu.com/quantal/liboctave-dev


In addition to Kai's suggestions, you can have a look at this example in the 
Octave source tree:
http://hg.savannah.gnu.org/hgweb/octave/file/8c0646dd9e5a/examples/embedded.cc
HTH,
c.