Re: g++ linker error

[Nugzar Nebieridze <nugzar@cyberjunkie.com>]

And more,

in this example you must use "class" instead of "struct", structure does not
support functions.

Marcel Harkema wrote:

> On Thu, Oct 14, 1999 at 12:28:47PM +0200, Oliver Bettinger wrote:
> >
> > I just installed Debian 2.1 and tried tu compile a small program with the
> > g++ compiler. It worked. then I tried to write a Header file and a CPP file
> > and compile it, so I could use the methods in there in other programs. Just
> > to test, if it would work. Here are the files:
> >
> > HEADER:
> > struct Test {
> >    void func();
> > };
> >
> > CPP:
> > #include "test.h"
> > #include <iostream>
> > using namespace std;
> > void Test::func() {
> >    cout << "This function does absolutely nothing!\n";
> > }
> >
> > Thats all.
> > As I said    g++ test.cpp
> > my compiler returned:
> > /usr/lib/crt1.o(.text+0x36): undefined reference to 'main'
> > collect2: ld returned 1 exit status
> >
> > What went wrong??? HELP!!!
>
>   I suggest you buy yourself a good C++ book, and read the manpage of gcc.
>   Anyway, you probably want to use 'g++ -c test.cpp' to compile to a .o file
>   instead of building an executable (you have no main function).
>
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