Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!usc!hacgate!lori
From: lori@hacgate.scg.hac.com (Lori Barfield)
Newsgroups: comp.sys.apollo
Subject: Re: Apollo ANSI standard C?  How close?  Should it matter?
Summary: notes from San Diego conference
Message-ID: <4203@hacgate.scg.hac.com>
Date: 29 Jun 89 00:19:24 GMT
References: <8906271541.AA06634@scrolls.wharton.upenn.edu>
Organization: Hughes Aircraft Company, El Segundo  CA
Lines: 76

In article <8906271541.AA06634@scrolls.wharton.upenn.edu>, shull@SCROLLS.WHARTON.UPENN.EDU writes:
> 
> As chair of a Local Apollo Users' Group, I have been asked to find
> out how close Apollo C under 10.1 is to ANSI C?

I'm not sure how much of the viewgraphs Jim Kumorek of Apollo passed out
at the Sys Admin Conference in San Diego apply to C, but I'll try to
weed out appropriate notes.  Hope this helps.



1.  CC will be "fully ANSI compliant by the release following the
    next release," i.e., the release after SR10.2

	includes const, signed, volatile


2.  SR10.2 is "due out in September/October."


7.  New CC features for SR10

	function prototypes
	reference variables
	generic pointers (void *)
	cpp for /bin/cc
	"some new features for cross-language communication"
	case correct global symbols (pas, ftn force to lower case now)
	inline functions for "some routines" in <math.h> and <strings.h>


8.  New CC features for SR10.1

	'-compress' option
	cross compiler for 68k-->AT


x.  Pascal at SR10 set up for cross-language communication

	c_param, a0_return and d0 (I don't remember what that means)


2.  SR10 gotcha:  COFF code size

	size will be much larger under SR10 because data section is
	     no longer compressed
	so compile with '-compress' and '-nclines', then use 'strip'
	('-nclines' available at SR10.2)


3.  SR10 gotcha:  PRISM compilers very slow

	compiler time cut in half at 10.2


4.  Current gotcha:  object files don't pass through NFS gateways

	at 10.2, object files will pass through gateways


5.  SR? gotcha:  _STDC_ preprocessor symbol really only means function
		 prototyping is in effect, not ANSI compatibility

	to prevent setting this symbol, use '-nstdc' switch
	use '-U_STDC_' to remove definition from /bin/cc



Please note that I'm just doing my best to interpret what I heard/wrote.
My experiences with C are mostly limited to VMS.



...lori

lori@hacgate.scg.hac.com