1 files changed, 64 insertions, 0 deletions
diff --git a/packages/package.mk b/packages/package.mk
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+# Copyright (c) 2020 Intel and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+define h1
+	@echo "--- $(1)"
+endef
+
+define download
+
+##############################################################################
+# Download
+##############################################################################
+ifeq ($$(call $1_download_cmds),)
+define $1_download_cmds
+	@if [ -e $(DL_CACHE_DIR)/$($1_tarball) ] ; \
+		then cp $(DL_CACHE_DIR)/$($1_tarball) $$@ ; \
+	else \
+		echo "Downloading $($1_url)" ; \
+		curl -o $$@ -LO $($1_url) ; \
+	fi
+endef
+endif
+
+downloads/$($1_tarball):
+	mkdir -p downloads
+	$$(call h1,"download $($1_tarball) ")
+	$$(call $1_download_cmds)
+	@rm -f $(B)/.$1.download.ok
+
+ifeq ($$(call $1_checksum_cmds),)
+define $1_checksum_cmds
+	$$(call h1,"validating $1 $($1_version) checksum")
+	@SUM=$$(shell openssl md5 $$< | cut -f 2 -d " " -) ; \
+	([ "$$$${SUM}" = "$($1_tarball_md5sum)" ] || \
+	( echo "========================================================" && \
+	echo "Bad Checksum!" && \
+	echo "Expected:   $($1_tarball_md5sum)" && \
+	echo "Calculated: $$$${SUM}" && \
+	echo "Please remove $$< and retry" && \
+	echo "========================================================" && \
+	false ))
+endef
+endif
+
+$(B)/.$1.download.ok: downloads/$($1_tarball)
+	@mkdir -p $(B)
+	$$(call $1_checksum_cmds)
+	@touch $$@
+
+.PHONY: $1-dl
+$1-dl: $(B)/.$1.download.ok
+
+
+ALL_TARGETS += $1-dl
+endef