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From:	CBFalconer <cbfalconer AT yahoo DOT com>
Organization:	Ched Research
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Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: TurboC vs DJGPP in efficiency.
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Date:	Mon, 18 Feb 2002 14:55:07 GMT
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cesar tejeda wrote:
> 
> I know a similar question is already in the FAQ,
> but, I have a little 386 and I notice a BIGGGG
> diference in compilation time for TurboC vs DJGPP.
> 
> TurboC needs a lot less compile time for the same
> file(10 times less approx.) , and it is also a
> FASSSTER environment when you compare it to RHIDE.
> It also uses a lot less memory.
> 
> ¿Why? ¿So high is the price we must pay for 32-bit
> programming?

If you look at the actual executable code generated GCC is very
efficient.  However the volume of run-time code inserted is quite
high, mainly to whip the lame DOS/Windoze interface into
reasonably close compliance with POSIX standards.

Do an "objdump -dS" on your .o object modules, and you will be
surprised how taut they are, especially if compiled with -O2.
-gstabs+ is also needed for suitable friendly interface with gdb
and objdump.  Then compare the result with the code output by TC
on the same sourcee.

-- 
Chuck F (cbfalconer AT yahoo DOT com) (cbfalconer AT XXXXworldnet DOT att DOT net)
   Available for consulting/temporary embedded and systems.
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