From:	Andrew Crabtree <andrewc AT typhoon DOT rose DOT hp DOT com>
Message-Id:	<199710241603.AA225099039@typhoon.rose.hp.com>
Subject:	Re: compiling C++ with -a switch
To:	eliz AT is DOT elta DOT co DOT il (Eli Zaretskii)
Date:	Fri, 24 Oct 1997 9:03:59 PDT
Cc:	andrewc AT rosemail DOT rose DOT hp DOT com, wallace AT ami1 DOT md DOT essd DOT northgrum DOT com,
	djgpp AT delorie DOT com
In-Reply-To:	<Pine.SUN.3.91.971024123150.12317E-100000@is>; from "Eli Zaretskii" at Oct 24, 97 12:32 (noon)
Reply-To:	andrewc AT rosemail DOT rose DOT hp DOT com

> >  Your mention of HAVE_ATEXIT just
> > makes we worried I may have overlooked something when I did this last 
> > April-ish.
> 
> I think it's better to make a local change that only involves that
> spot.  HAVE_ATEXIT is used in several other spots as well.  (I would
> expect that there should be a way to disable the dtor handling without
> having to lie to the configuration about the functions we have in the
> library, though.)

This will really strain my memory, but I think was happened was this - 

GCC Now compiles in its own version of atexit into libgcc.a if 
HAVE_ATEXIT is not defined.  This version of atexit also 
doesn't run properly for DJGPP (as in it don't run at all).
 I noticed that things like allegro 
weren't working properly, nor were dtors or anything else that
used atexit (specifically the gcc options for using gcov -ftest-coverage
and -fprofile-arcs).  I can go back and doublecheck the sources
(hold on I'll do it now)

OK - In libgcc2.c, just after the area that you patched, there is 
a conditional function definition for atexit.  The condition if 
NEED_ATEXIT, but that is dependent on HAVE_ATEXIT (I think).  
I don't know what all the options here are.   But what do you mean 
by 'lie to the configuration', DJs libc does have an atexit?

Andy


--
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           /                       	                  Andrew Crabtree 
          /                          	      Workgroup Networks Division 
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                 /                           andrewc AT rosemail DOT rose DOT hp DOT com
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