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From: Keith Owens <kaos@ocs.com.au>
To: Bill Pringlemeir <bpringle@sympatico.ca>
cc: "David S. Miller" <davem@redhat.com>, linux-kernel@vger.kernel.org
Subject: Re: [patch] 2.4.6-pre3 unresolved symbol do_softirq 
In-Reply-To: Your message of "13 Jun 2001 10:31:22 -0400."
             <m2zobcxxhh.fsf@sympatico.ca> 
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Date: Thu, 14 Jun 2001 00:39:09 +1000
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On 13 Jun 2001 10:31:22 -0400, 
Bill Pringlemeir <bpringle@sympatico.ca> wrote:
>Try ye' olde STRINGIFY and string concatenation?  Well, at least I try...
>
>     #define my_symbol my_symbol_versioned
>     #define STRINGIFY(a) STRINGIFY1(a)
>     #define STRINGIFY1(a) #a
>     extern void my_symbol(void);
>
>     void foo(void)
>     {
>         __asm__("call " STRINGIFY(my_symbol) "\n");
>     }
>
>     [bpringle@localhost bpringle]$ gcc -o x x.c
>     /usr/lib/crt1.o(.text+0x18): undefined reference to `main'
>     /tmp/ccIj9Cit.o: In function `foo':
>     /tmp/ccIj9Cit.o(.text+0x4): undefined reference to `my_symbol_versioned'

Only at the cost of polluting every .h file that calls a symbol from
__asm__.  The whole pre-processor kludge for symbol versions goes away
in 2.5 so live with _novers for now.