Hi,
I have some problems linking a program that I created. I get these errors:

/tmp/cciJGmJZ.o(.data+0x0): multiple definition of `operators'
/tmp/ccAQ8C4f.o(.data+0x0): first defined here
/tmp/cciJGmJZ.o(.data+0x8): multiple definition of `fNames'
/tmp/ccAQ8C4f.o(.data+0x8): first defined here
/tmp/cciJGmJZ.o(.data+0x1c): multiple definition of `countFunctions'
/tmp/ccAQ8C4f.o(.data+0x1c): first defined here
/tmp/cciJGmJZ.o(.bss+0x0): multiple definition of `currentExpression'
/tmp/ccAQ8C4f.o(.bss+0x0): first defined here
collect2: ld returned 1 exit status
make: *** [all] Error 1

because the source files are to big to be posted here, I'l just give a link to where they are at;
link
You will find three files, ES.cpp, ES.h and main.h
The thing is, I need the stuff that's in "ES.h" in both "ES.cpp" and "main.cpp". That's why I have an "#include "ES.h" " in both. And I think this results in the error.
Can someone help me?

you can give -Xlinker -zmuldefs option to g++ if you are using g++

or if you are using ld to link u can give -zmuldefs

Hi,
it didn't work. This is my makefile:

#!/bin/bash

all:

g++ ES.cpp main.cpp -Xlinker -zmuldefs -o calc


It still says the same

Make sure that in your .h files, the #ifndef line is the very first thing, so you should remove the comment at the beginning of that file.

And I could be wrong but it might be the case that you have to export the variables defined in other files. It might have something to do with scope rules.

Hello,
GtkUser, I don't know how to do that. How do yuou export variables?

To tell you the truth, I have not used it for before, but I've read about it. Infact I should have said 'extern' rather than export.

So in your .h file your declaration can be like this:
extern int value;

But not this:
int value = 0;
Or this is wrong too:
int value;

Extern means that value is defined somewhere else in a .cpp file. Also you can not initialize variables in the .h file, because that means they become a definition. Apparently the header file should only contain definitions for INLINE functions or objects. And the rest is declarations. A non-inline definition belongs in the .cpp file. At least that is what I gather.

The header file is a centralized location for all extern object declarations, function declarations, and inline function definitions. That's all.

Files that must use or define and object or function include the header file(s).

So in other words, you have variable definitions in your header file, and those should be removed or made extern, or made inline.

Thanks. I have a friend here sugesting the same thing. So I'l try and report back

Thanks a million. It worked.

It works...

Thank you very much