🚀 go-pugleaf

>>>>> "Peter" == Peter Scott <pjs@ARISTOTLE.JPL.NASA.GOV> writes:

Peter> When I attempt to build emacs for my Sun 3/160, running SunOS
Peter> 4.0.3 with X11R4.11, I get the message

Peter>         undefined: f68881_used

Peter> When we made X11 we defined -f68881 as one of the compiler
Peter> flags (sun.cf:#define DefaultCCOptions -f68881 -pipe to be
Peter> precise).  It has caused no problems until now.  Is this a bug
Peter> in the Emacs build?


We came across this problem and solved it by linking emacs with the
Sun object file /usr/lib/Mcrt1.o which defines that flag and is used
by programs accessing the 68881.  Can't remember exactly where in the
Sun docs they mention this.  Anyway, we changed emacs/src/ymakefile
and here are the relevent lines (sorry, no diffs):

	#ifndef START_FILES
	#ifdef NO_REMAP
	#define START_FILES pre-crt0.o /lib/crt0.o
	#else
	/* Modified: 24-May-1990 snc
	   only need Mcrt1.o for 68881 */
	#ifdef sun3
	#define START_FILES crt0.o /usr/lib/Mcrt1.o
	#else
	#define START_FILES crt0.o
	#endif sun3
	#endif
	#endif /* have START_FILES */

Note that /usr/lib/Mcrt1.o *MUST* come after crt0.o on the START_FILES
line.  crt0.o has to be the first thing on the link command or emacs
won't work.  Also we added the ifdef for sun3 since those are the only
architecture that (at our site) have the 68881 and the file doesn't
exist on sun4's, etc.

-Barry

NAME: Barry A. Warsaw                USMAIL: National Institute of Standards
TELE: (301) 975-3460                         and Technology (formerly NBS)
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