#

# 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, 2016, Oracle and/or its affiliates. All rights reserved.

#

FETCH =		$(WS_TOOLS)/userland-fetch

#

# Anything that we download must have a COMPONENT_ARCHIVE_URL{_[0-9]+} macro

# that tells us where the canonical source for the archive can be found.  The

# macro for the first archive is typically un-suffixed.  By convention,

# subsequent archives will include a _[0-9]+ in the macro name.  This allows

# an arbitrary number of archives to be downloaded for a particular component

# Makefile.  It is also important to note that there is a corresponding

# COMPONENT_ARCHIVE macro defining a local file name for the archive, and

# optional COMPONENT_ARCHIVE_HASH and COMPONENT_SIG_URL containing a hash of

# the file and signature for verification of its contents.

#

# Filter out any suffixes which correspond to auto-generated github archive

# URLs (see prep-git.mk for the definition of GITHUB_ARCHIVE_SUFFIXES).  If

# the primary archive shouldn't be processed here, we check for it before

# evaling.

URL_SUFFIXES = $(filter-out $(GITHUB_ARCHIVE_SUFFIXES), \

		$(subst COMPONENT_ARCHIVE_URL_,, \

		 $(filter COMPONENT_ARCHIVE_URL_%, $(.VARIABLES))))

# Templates for download variables and rules.  We separate the variable

# assignments from the rules so that all the variable assignments are given a

# chance to complete before those variables are used in targets or

# prerequisites, where they'll be expanded immediately.  Use ifneq/origin

# instead of ifdef due to GNU Make bug 49093.

define download-variables

ifneq "$(origin COMPONENT_ARCHIVE_URL$(1))" "undefined"

ARCHIVES += $$(COMPONENT_ARCHIVE$(1))

CLOBBER_PATHS += $$(COMPONENT_ARCHIVE$(1)) $$(notdir $$(COMPONENT_SIG_URL$(1)))

endif

endef

define download-rules

ifneq "$(origin COMPONENT_ARCHIVE_URL$(1))" "undefined"

download::	$$(USERLAND_ARCHIVES)$$(COMPONENT_ARCHIVE$(1))

$$(USERLAND_ARCHIVES)$$(COMPONENT_ARCHIVE$(1)):	$(MAKEFILE_PREREQ)

	$$(FETCH) --file $$@ \

		$$(COMPONENT_ARCHIVE_URL$(1):%=--url %) \

		$$(COMPONENT_ARCHIVE_HASH$(1):%=--hash %) \

		$$(COMPONENT_SIG_URL$(1):%=--sigurl %)

	$$(TOUCH) $$@

REQUIRED_PACKAGES += runtime/python-27

endif

endef

# Evaluate the variable assignments immediately.  If we're pulling the main

# (unsuffixed) archive from github, gia prep-git.mk, then skip doing that here.

# Use $(if) instead of ifeq() because the latter is evaluated immediately.

$(if $(findstring __BLANK__,$(GITHUB_ARCHIVE_SUFFIXES)),,$(eval $(call download-variables,)))

$(foreach suffix, $(URL_SUFFIXES), $(eval $(call download-variables,_$(suffix))))

# Put the rule evaluations in a variable for deferred evaluation.

define eval-download-rules

$(if $(findstring __BLANK__,$(GITHUB_ARCHIVE_SUFFIXES)),,$(eval $(call download-rules,)))

$(foreach suffix, $(URL_SUFFIXES), $(eval $(call download-rules,_$(suffix))))

endef

# Needed for signature validation of downloads

REQUIRED_PACKAGES += crypto/gnupg