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-?RCS: $Id: Guess.U,v 3.0.1.4 1994/10/29 15:53:55 ram Exp $
-?RCS:
-?RCS: Copyright (c) 1991-1993, Raphael Manfredi
-?RCS:
-?RCS: You may redistribute only under the terms of the Artistic Licence,
-?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 Licence; a copy of which may be found at the root
-?RCS: of the source tree for dist 3.0.
-?RCS:
-?RCS: $Log: Guess.U,v $
-?RCS: Revision 3.0.1.4 1994/10/29 15:53:55 ram
-?RCS: patch36: added ?F: line for metalint file checking
-?RCS: patch36: call ./xenix explicitely instead of relying on PATH
-?RCS:
-?RCS: Revision 3.0.1.3 1993/12/15 08:14:35 ram
-?RCS: patch15: variable d_bsd was not always set properly
-?RCS:
-?RCS: Revision 3.0.1.2 1993/08/30 08:57:14 ram
-?RCS: patch8: fixed comment which wrongly attributed the usrinc symbol
-?RCS: patch8: no more ugly messages when no /usr/include/ctype.h
-?RCS:
-?RCS: Revision 3.0.1.1 1993/08/27 14:37:37 ram
-?RCS: patch7: added support for OSF/1 machines
-?RCS:
-?RCS: Revision 3.0 1993/08/18 12:04:57 ram
-?RCS: Baseline for dist 3.0 netwide release.
-?RCS:
-?X:
-?X: This unit hazards some guesses as to what the general nature of the system
-?X: is. The information it collects here is used primarily to establish default
-?X: answers to other questions.
-?X:
-?MAKE:Guess d_eunice d_xenix d_bsd: cat test echo n c contains rm Loc eunicefix
-?MAKE: -pick add $@ %<
-?S:d_eunice:
-?S: This variable conditionally defines the symbols EUNICE and VAX, which
-?S: alerts the C program that it must deal with ideosyncracies of VMS.
-?S:.
-?S:d_xenix:
-?S: This variable conditionally defines the symbol XENIX, which alerts
-?S: the C program that it runs under Xenix.
-?S:.
-?S:d_bsd:
-?S: This symbol conditionally defines the symbol BSD when running on a
-?S: BSD system.
-?S:.
-?C:EUNICE:
-?C: This symbol, if defined, indicates that the program is being compiled
-?C: under the EUNICE package under VMS. The program will need to handle
-?C: things like files that don't go away the first time you unlink them,
-?C: due to version numbering. It will also need to compensate for lack
-?C: of a respectable link() command.
-?C:.
-?C:VMS:
-?C: This symbol, if defined, indicates that the program is running under
-?C: VMS. It is currently only set in conjunction with the EUNICE symbol.
-?C:.
-?C:XENIX:
-?C: This symbol, if defined, indicates thet the program is running under
-?C: Xenix (at least 3.0 ?).
-?C:.
-?X:We don't use BSD in the perl source. It's too vague, and already
-?X:defined in some header files anyway (e.g. NetBSD).
-?X:?C:BSD:
-?X:?C: This symbol, if defined, indicates that the program is running under
-?X:?C: a BSD system.
-?X:?C:.
-?H:#$d_eunice EUNICE /**/
-?H:#$d_eunice VMS /**/
-?H:#$d_xenix XENIX /**/
-?X:?H:#$d_bsd BSD /**/
-?H:.
-?F:./bsd ./usg ./v7 ./osf1 ./eunice ./xenix ./venix
-?T:xxx
-: make some quick guesses about what we are up against
-echo " "
-$echo $n "Hmm... $c"
-echo exit 1 >bsd
-echo exit 1 >usg
-echo exit 1 >v7
-echo exit 1 >osf1
-echo exit 1 >eunice
-echo exit 1 >xenix
-echo exit 1 >venix
-d_bsd="$undef"
-?X:
-?X: Do not use 'usrinc', or we get a circular dependency. because
-?X: usrinc is defined in usrinc.U, which relies on us...
-?X:
-$cat /usr/include/signal.h /usr/include/sys/signal.h >foo 2>/dev/null
-if test -f /osf_boot || $contains 'OSF/1' /usr/include/ctype.h >/dev/null 2>&1
-then
- echo "Looks kind of like an OSF/1 system, but we'll see..."
- echo exit 0 >osf1
-elif test `echo abc | tr a-z A-Z` = Abc ; then
- xxx=`./loc addbib blurfl $pth`
- if $test -f $xxx; then
- echo "Looks kind of like a USG system with BSD features, but we'll see..."
- echo exit 0 >bsd
- echo exit 0 >usg
- else
- if $contains SIGTSTP foo >/dev/null 2>&1 ; then
- echo "Looks kind of like an extended USG system, but we'll see..."
- else
- echo "Looks kind of like a USG system, but we'll see..."
- fi
- echo exit 0 >usg
- fi
-elif $contains SIGTSTP foo >/dev/null 2>&1 ; then
- echo "Looks kind of like a BSD system, but we'll see..."
- d_bsd="$define"
- echo exit 0 >bsd
-else
- echo "Looks kind of like a Version 7 system, but we'll see..."
- echo exit 0 >v7
-fi
-case "$eunicefix" in
-*unixtovms*)
- $cat <<'EOI'
-There is, however, a strange, musty smell in the air that reminds me of
-something...hmm...yes...I've got it...there's a VMS nearby, or I'm a Blit.
-EOI
- echo exit 0 >eunice
- d_eunice="$define"
-: it so happens the Eunice I know will not run shell scripts in Unix format
- ;;
-*)
- echo " "
- echo "Congratulations. You aren't running Eunice."
- d_eunice="$undef"
- ;;
-esac
-if test -f /xenix; then
- echo "Actually, this looks more like a XENIX system..."
- echo exit 0 >xenix
- d_xenix="$define"
-else
- echo " "
- echo "It's not Xenix..."
- d_xenix="$undef"
-fi
-chmod +x xenix
-$eunicefix xenix
-if test -f /venix; then
- echo "Actually, this looks more like a VENIX system..."
- echo exit 0 >venix
-else
- echo " "
- if ./xenix; then
- : null
- else
- echo "Nor is it Venix..."
- fi
-fi
-chmod +x bsd usg v7 osf1 eunice xenix venix
-$eunicefix bsd usg v7 osf1 eunice xenix venix
-$rm -f foo
-