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#!/bin/sh

# This script acts as a simple interface for building extensions.
# It primarily used by the perl Makefile:
#
# d_dummy $(dynamic_ext): miniperl preplibrary FORCE
#        ext/util/make_ext dynamic $@
#
# It may be deleted in a later release of perl so try to
# avoid using it for other purposes.

target=$1;  shift
extspec=$1; shift
passthru="$*" # allow extra macro=value to be passed through
echo ""

case $CONFIG in
'')
    if test -f config.sh; then TOP=.;
    elif test -f ../config.sh; then TOP=..;
    elif test -f ../../config.sh; then TOP=../..;
    elif test -f ../../../config.sh; then TOP=../../..;
    elif test -f ../../../../config.sh; then TOP=../../../..;
    else
        echo "Can't find config.sh generated by Configure"; exit 1
    fi
    . $TOP/config.sh
    ;;
esac

if test "X$extspec" = X; then
	echo "make_ext: no extension specified"
	exit 1;
fi

# The Perl Makefile.SH will expand all extensions to
#	lib/auto/X/X.a  (or lib/auto/X/Y/Y.a is nested)
# A user wishing to run make_ext might use
#	X (or X/Y or X::Y is nested)

# canonise into X/Y form (pname)
case "$extspec" in
lib*)	# Remove lib/auto prefix and /*.* suffix
	pname=`echo "$extspec" | sed -e 's:^lib/auto/::' -e 's:/[^/]*\.[^/]*$::' ` ;;
*::*)	# Convert :: to /
	pname=`echo "$extspec" | sed -e 's/::/\//g' ` ;;
*)	pname="$extspec" ;;
esac
# echo "Converted $extspec to $pname"

mname=`echo "$pname"   | sed -e 's!/!::!g'`
depth=`echo "$pname"   | sed -e 's![^/][^/]*!..!g'`
make=${altmake-make}
makefile=Makefile
makeargs=''
makeopts=''

if test ! -d "ext/$pname"; then
    echo "	Skipping $extspec (directory does not exist)"
    exit 0 # not an error ?
fi


echo "	Making $mname ($target)"

cd ext/$pname

# check link type and do any preliminaries
case "$target" in
	    # convert 'static' or 'dynamic' into 'all LINKTYPE=XXX'
static)     makeargs="LINKTYPE=static CCCDLFLAGS="
	    target=all
	    ;;
dynamic)    makeargs="LINKTYPE=dynamic";
	    target=all
	    ;;

*clean) # If Makefile has been moved to Makefile.old by a make clean
	    # then use Makefile.old for realclean rather than rebuild it
	    if test ! -f $makefile -a -f Makefile.old; then
		makefile=Makefile.old
		makeopts="-f $makefile"
		echo "Note: Using Makefile.old"
	    fi
	    ;;

*)	# for the time being we are strict about what make_ext is used for
	echo "make_ext: unknown make target '$target'"; exit 1
	;;
'')	echo "make_ext: no make target specified (eg static or dynamic)"; exit 1
	;;
esac

if test ! -f $makefile ; then
	test -f Makefile.PL && ../$depth/miniperl -I../$depth/lib Makefile.PL
fi
if test ! -f $makefile ; then
	if test -f Makefile.SH; then
		echo "Warning: Writing $makefile from old-style Makefile.SH!"
		sh Makefile.SH
	else
		echo "Warning: No Makefile!"
	fi
fi

case "$target" in
clean)		;;
realclean)	;;
*)	# Give makefile an opportunity to rewrite itself.
	# reassure users that life goes on...
	$make config $passthru || echo "$make config failed, continuing anyway..."
	;;
esac

$make $makeopts $target $makeargs $passthru || exit

exit $?