?RCS: $Id$
?RCS:
?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi
?RCS:
?RCS: You may redistribute only under the terms of the Artistic License,
?RCS: as specified in the README file that comes with the distribution.
?RCS: You may reuse parts of this distribution only within the terms of
?RCS: that same Artistic License; a copy of which may be found at the root
?RCS: of the source tree for dist 4.0.
?RCS:
?RCS: $Log: fpu.U,v $
?RCS: Revision 3.0  1993/08/18  12:08:10  ram
?RCS: Baseline for dist 3.0 netwide release.
?RCS:
?MAKE:fpu: test cat cc Myread
?MAKE:	-pick add $@ %<
?S:fpu (fpunit):
?S:	Set to be the compile flag for the local floating point unit.
?S:.
?C:FPU (FPUNIT):
?C:	String containing the flags for the local floating point unit.
?C:.
?H:#define FPU "$fpu" /**/
?H:.
: see what floating point compile flags should be used.
fpu=''
if $test -r /dev/fpa; then
	$cat>fpa.c << GOOP
	main(){return(1);}
GOOP
	$cc -ffpa -o fpa fpa.c
	fpa > fpa.out 2>&1
	if $test ! -s fpa.out; then
		dflt='y'
		$cat <<'EOM'

You seem to have a sun fpa...  I can compile the code to use the fpa but it will
mean that the code can ONLY run on a machine with a fpa...

EOM
		rp="Should I compile for fpa?"
		. ./myread
		if $test $ans = "n"; then
			fpu=''
		else
			fpu='-ffpa'
		fi
	else
		$cat <<'EOM'

You have the fpa device but I can't seem to use it.  Maybe you should talk to
your sysadmin about this.  For now, I am not going to compile it in.

EOM
	fi
fi
if $test "$fpu" = ''; then
	if $test -r /usr/etc/mc68881version; then
		dflt='y'
		$cat <<'EOM'

There also seems to be the pieces for a 68881.  If I compile this in, it will
work on almost all Sun 3's except for a few Sun-3/50s without a 68881...

EOM
		rp="Should I compile for a 68881?"
		. ./myread
		if $test $ans = "y"; then
			fpu='-f68881'
		fi
	fi
fi