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Re: Library libg2c leads double definition of main routine.
From: |
mwollenw |
Subject: |
Re: Library libg2c leads double definition of main routine. |
Date: |
Tue, 21 Jan 2003 11:22:24 -0500 (EST) |
I'm having similar problems. Where can i find documentation on using
octave in C/C++ programs?
---------------------------
Matthew Wollenweber
address@hidden
On Mon, 20 Jan 2003, Kohei Taki wrote:
> Hello.
>
> I want to use octave as class library for C++.
> But, using compiler link option for libg2c leads me below error.
> % g++ -I/usr/include/octave-2.1.35/ -L/usr/lib/octave-2.1.35 -loctave
> -lcruft \
> -loctinterp -lreadline -lcurses -llapack -lblas -ldl -lg2c \
> -L/home/pippin/name/.redhat/SOURCES/octave-2.1.35/kpathsea -lkpathsea
> \
> hello.cpp
> /usr/lib/gcc-lib/i386-redhat-linux/2.96/libg2c.a(main.o)(.text+0x0): first
> defined here
> /usr/bin/ld: Warning: size of symbol `main' changed from 58 to 174 in
> /tmp/ccvCth5v.o
> collect2: ld returned 1 exit status
> %
> The compiler tell me that main routine already defined at libg2c.
> I use strings command for libg2c.
> % strings /usr/lib/gcc-lib/i386-redhat-linux/2.96/libg2c.a | grep main
> main
> main.o/ 101865......
> main.c
> main
> %
> It is true what the compiler said,
> how have you solve this problem ?
> The C++ source code expresses following simple logic.
> ==========begin hello.cpp=============
> #include<iostream>
> #include<octave/config.h>
> #inlcude<octave/Matrix.h>
> int main() {
> Matrix m(2, 2, 1.0);
> cout << "hello octave !" << endl < m;
> return 0;
> }
> ==========end hello.cpp===============
>
> Please give me advises to overcome this error message.
>
> ----
> Kohei Taki address@hidden
>
>
>
> -------------------------------------------------------------
> Octave is freely available under the terms of the GNU GPL.
>
> Octave's home on the web: http://www.octave.org
> How to fund new projects: http://www.octave.org/funding.html
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> -------------------------------------------------------------
>
-------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.
Octave's home on the web: http://www.octave.org
How to fund new projects: http://www.octave.org/funding.html
Subscription information: http://www.octave.org/archive.html
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