--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make-rules/prep-unpack.mk	Mon Apr 27 10:19:50 2015 -0500
@@ -0,0 +1,69 @@
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+# Copyright (c) 2010, 2015, Oracle and/or its affiliates. All rights reserved.
+#
+
+UNPACK =		$(WS_TOOLS)/userland-unpack
+
+#
+# Anything that we downloaded and want to unpack must have a
+# COMPONENT_ARCHIVE{_[0-9]+} macro.
+#
+TMP_SUFFIXES = $(subst COMPONENT_ARCHIVE_,, \
+                $(filter COMPONENT_ARCHIVE_%, $(.VARIABLES)))
+
+# Template for unpacking rules.
+define unpack-rules
+ifdef COMPONENT_ARCHIVE$(1)
+ifdef COMPONENT_SRC$(1)
+
+CLEAN_PATHS += $$(COMPONENT_SRC$(1))
+SOURCE_DIR$(1) = $$(COMPONENT_DIR)/$(COMPONENT_SRC$(1))
+
+UNPACK_STAMP$(1) =	$$(SOURCE_DIR$(1))/.unpacked
+
+$$(UNPACK_STAMP$(1)):	$$(USERLAND_ARCHIVES)$$(COMPONENT_ARCHIVE$(1)) download
+	$$(RM) -r $$(SOURCE_DIR$(1))
+	$$(UNPACK) $$(UNPACK_ARGS$(1)) $$(USERLAND_ARCHIVES)$$(COMPONENT_ARCHIVE$(1))
+	$$(COMPONENT_POST_UNPACK_ACTION$(1))
+	$$(TOUCH) $$@
+
+unpack::	$$(UNPACK_STAMP$(1))
+
+REQUIRED_PACKAGES += archiver/gnu-tar
+REQUIRED_PACKAGES += compress/bzip2
+REQUIRED_PACKAGES += compress/gzip
+REQUIRED_PACKAGES += compress/p7zip
+REQUIRED_PACKAGES += compress/unzip
+REQUIRED_PACKAGES += compress/xz
+REQUIRED_PACKAGES += developer/java/jdk
+REQUIRED_PACKAGES += runtime/ruby
+
+endif
+endif
+endef
+
+#
+# Define the rules required to download any source archives and augment any
+# cleanup macros.
+#
+$(eval $(call unpack-rules,))
+$(foreach suffix, $(TMP_SUFFIXES), $(eval $(call unpack-rules,_$(suffix))))