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Scilab configuration on Eclipse IDE for c++, Version Helios Service Release 2 [message #1753380]

Sun, 05 February 2017 11:44

Van Pham

Messages: 1
Registered: February 2017

Junior Member

Hi,

I am trying to compile a simple c++ code calling the Scilab commands, using Eclipse IDE for c++, Version Helios Service Release 2. The following errors show up:

**** Rebuild of configuration Debug for project scilab_sample ****

**** Internal Builder is used for build ****
g++ -IC:\Program Files (x86)\scilab-5.5.2\modules\api_scilab\includes -IC:\Program Files (x86)\scilab-5.5.2\modules\call_scilab\includes -IC:\Program Files (x86)\scilab-5.5.2\modules\core\includes -IC:\Program Files (x86)\scilab-5.5.2\libs -IC:\Program Files (x86)\scilab-5.5.2\bin -O0 -g3 -Wall -c -fmessage-length=0 -oscilab.o ..\scilab.cpp
..\scilab.cpp: In function 'int main()':
..\scilab.cpp:25:52: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
SendScilabJob("myMatrix=['sample','for the help']");
^
..\scilab.cpp:26:33: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
SendScilabJob("disp(myMatrix);"); // Will display !sample for the help !
^
..\scilab.cpp:27:39: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
SendScilabJob("disp([2,3]+[-44,39]);"); // Will display - 42. 42.
^
g++ -oscilab_sample.exe scilab.o
scilab.o: In function `main':
C:\Users\van\workspace\scilab_sample\Debug/../scilab.cpp:16: undefined reference to `StartScilab'
C:\Users\van\workspace\scilab_sample\Debug/../scilab.cpp:25: undefined reference to `SendScilabJob'
C:\Users\van\workspace\scilab_sample\Debug/../scilab.cpp:26: undefined reference to `SendScilabJob'
C:\Users\van\workspace\scilab_sample\Debug/../scilab.cpp:27: undefined reference to `SendScilabJob'
C:\Users\van\workspace\scilab_sample\Debug/../scilab.cpp:30: undefined reference to `TerminateScilab'
collect2.exe: error: ld returned 1 exit status
Build error occurred, build is stopped
Time consumed: 4769 ms.

This is my code:

// A simple call_scilab example

#include <stdio.h> /* stderr */
#include "api_scilab.h" /* Provide functions to access to the memory of Scilab */
#include "call_scilab.h" /* Provide functions to call Scilab engine */

// Filename: simple_call_scilab.c

int main(void)
{
/****** INITIALIZATION **********/

#ifdef _MSC_VER
if ( StartScilab(NULL,NULL,NULL) == FALSE )
#else
if ( StartScilab(getenv("SCI"),NULL,NULL) == FALSE )
#endif
{
fprintf(stderr,"Error while calling StartScilab\n");
return -1;
}

/****** ACTUAL Scilab TASKS *******/

SendScilabJob("myMatrix=['sample','for the help']");
SendScilabJob("disp(myMatrix);"); // Will display !sample for the help !
SendScilabJob("disp([2,3]+[-44,39]);"); // Will display - 42. 42.

/****** TERMINATION **********/
if ( TerminateScilab(NULL) == FALSE ) {
fprintf(stderr,"Error while calling TerminateScilab\n");
return -2;
}
return 0;
}

I suspect I haven't configure the link correctly. Can anyone please help?

Many thanks,
Van

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Re: Scilab configuration on Eclipse IDE for c++, Version Helios Service Release 2 [message #1761112 is a reply to message #1753380]

Sun, 07 May 2017 02:53

Chuck Pergiel

Messages: 30
Registered: April 2016
Location: Silicon Forest

Member

First off, are you using C or C++? C++ uses

#include <iostream.h>

instead of

#include <stdio.h>

The linker cannot find the Scilab library. You need to add it to the configuration (Project / Properties / C/C++ Build / Settings / Tool Settings / GCC C Linker / Libraries). If the library is in a directory known to the linker, just adding the library name should be sufficient. Try it. If it doesn't work, you will need to add the path, or move the library to somewhere (where? I have no idea.) where where the linker can find it.

https://drive.google.com/file/d/0BxNrocOKYP7feGNqQWdSajdCaGc/view?usp=sharing

Sent from my Commodore-64 via a US Robotics 300 Baud Modem

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