From: huntercr AT cs DOT purdue DOT edu (Charles Hunter)
Subject: More FPU woes... ( summary )
To: antony AT werple DOT mira DOT net DOT au, DJGPP AT sun DOT soe DOT clarkson DOT edu (djgpp mailing list)
Date: Mon, 1 May 1995 00:52:24 -0500 (EST)

> 
> >We've sort of been through this before, and I know that solution is
> >to wait for Version 2 but...
> >
> >Why oh *why* does "make" use FPU instructions??? What are they needed for?
> >This might make for ease of porting, but the result is that under
> >a DPMI system [ Dos under OS/2 ] one cannot realisticly compile without a 
> >coprocessor!
> >
> >			*sigh*
> >
> >				--Charles Hunter
> 
> I dont understand this.  I was given to believe that OS/2 will install
> its own emulator library if your CPU has no FPU, so it will transparently
> execute FPU instructions.

	Umm... not on my OS/2. Are you sure about this? Maybe this is
	a shareware product? I know that this is not the case for
	Warp or 2.1 .


c:\work\ > make

------------------------------------------------------------------------------

MAKE.EXE:

	Sys2237: DosKrnl  A NPX instruction was attempted, but no NPX is
		present.

	EXPLANATION: You have an application attempting to use the numeric
		coprocessor, but no coprocessor is present on the system.

	ACTION: Install a numeric coprocessor and retry the application.
------------------------------------------------------------------------------

As I have been reminded, this is not always the fault of MAKE, but
also of GCC but since MAKE is the parent, OS/2 will report  it as the fault of
MAKE. The error is caused [ As is well known ] because emu387 does not 
work under DPMI. DJGPP version 2 takes care of this.

	
Does anyone know of an FPU emulator for OS/2 ? This would be a nicer solution.
However, if I would just scrounge up a few dollars for a 387 someday, 
I wouldn't have to worry ;)

			Thanks to all that helped,

					Charles

	
P.S. I may take the time to compile an FPU-less version of all 
the DJ sources some day, but I am really busy now... 
anyone else up to the challenge? It shouldn't be too difficult.