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Date: Tue, 25 Oct 2011 19:33:13 +0300
Message-ID: <CAA2C=vAn=NZYHMCc58HqfNZ=cdVbom-cE4ZZV1Pz=ziTT8EsNA@mail.gmail.com>
Subject: Re: _rdtsc(void) inline function in time.h - cause problem with
 multiple definition during linking
From: Ozkan Sezer <sezeroz AT gmail DOT com>
To: djgpp AT delorie DOT com
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On Tue, Oct 25, 2011 at 7:30 PM, Eli Zaretskii <eliz AT gnu DOT org> wrote:
>> From: RayeR <glaux AT centrum DOT cz>
>> Date: Tue, 25 Oct 2011 04:02:09 -0700 (PDT)
>>
>> during compiling large sources I run into troubles with multiple
>> _rdtsc(void) definition during linking. The problem is caused when in
>> 1st stage is compiled a library that includes time.h and then in 2nd
>> stage is compiled main app that also includes time.h Because there is
>> _rdtsc() code already in library linker got confused what to use.
>>
>> Do you think it should be fixed DJGPP time.h header to redefine
>>
>> extern __inline__ unsigned long long
>> _rdtsc(void)
>> {
>>   unsigned long long result;
>>   __asm__ __volatile__ ("rdtsc" : "=A"(result) );
>>   return result;
>> }
>>
>> to static?
>
> Can you show the error messages you get?
>
> It is strange that you should get any errors at all: an inline
> function is like a macro, it disappears without a trace in the
> compiled object code, so the linker should not complain, because
> there's no symbol corresponding to the function for it to see any
> multiple definitions.  There simply should not be any definition at
> all.
>
> Did you perhaps disable inlining, or compiled with some headers that
> define away __inline__?
>

BTW, is the issue with 2.03 or 2.04?  IIRC, 2.04 had fix applied for this.

--
O.S.