fix .gitignore: only ignore 'perl' in root of repo, not U/perl subdir

[metaconfig.git] / U / perl / usemultiplicity.U

?RCS: $Id$
?RCS:
?RCS: Copyright (c) 1998 Jarkko Hietaniemi
?RCS:
?RCS: You may distribute under the terms of either the GNU General Public
?RCS: License or the Artistic License, as specified in the README file.
?RCS:
?MAKE:usemultiplicity: useithreads Myread Oldconfig Setvar
?MAKE:	-pick add $@ %<
?Y:TOP
?S:usemultiplicity:
?S:	This variable conditionally defines the MULTIPLICITY symbol,
?S:	and indicates that Perl should be built to use multiplicity.
?S:.
?C:MULTIPLICITY:
?C:	This symbol, if defined, indicates that Perl should
?C:	be built to use multiplicity.
?C:.
?H:?%<:#ifndef MULTIPLICITY
?H:?%<:#$usemultiplicity	MULTIPLICITY		/**/
?H:?%<:#endif
?H:.
?LINT:set usemultiplicity
?INIT:: set usemultiplicity on the Configure command line to enable multiplicity.
: Check if multiplicity is required
?X: We should really have some explanatory text here, and some
?X: automatic setting of sensible defaults.
cat <<EOM

Perl can be built so that multiple Perl interpreters can coexist
within the same Perl executable.
EOM

case "$useithreads" in
$define)
	cat <<EOM
This multiple interpreter support is required for interpreter-based threads.
EOM
	val="$define"
	;;
*)	case "$usemultiplicity" in
	$define|true|[yY]*)	dflt='y';;
	*) dflt='n';;
	esac
	echo " "
	echo "If this doesn't make any sense to you, just accept the default '$dflt'."
	rp='Build Perl for multiplicity?'
	. ./myread
	case "$ans" in
	y|Y)	val="$define" ;;
	*)      val="$undef" ;;
	esac
	;;
esac
set usemultiplicity
eval $setvar