What exactly is 'one-only linkage'?

I am getting a warning on Mac OS X about the system not supporting one-only linkage. I also see it in the known-issues on the web site. It has a work around, which I will try if I need to. But to know whether I need to, I need to know what one-only linkage is. Anyone? Drew

May 04, 2004

Re: What exactly is 'one-only linkage'?

Posted by David Friedman
in reply to Drew McCormack

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David Friedman

Posted in reply to Drew McCormack

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Drew McCormack wrote:
> I am getting a warning on Mac OS X about the system not supporting one-only linkage. I also see it in the known-issues on the web site. It has a work around, which I will try if I need to. But to know whether I need to, I need to know what one-only linkage is. Anyone?
> 
> Drew
> 

One-only linkage tells the linker to use only one instance of a function  or a variable if it is defined multiple times (normally, this is an error.)  If your program uses the same template instance in more than one module, you will probably need to use the work-around.  If you see "multiple definitions" errors when linking, then you have to use it.

David

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