From dfb35e9d6ca731ce43e44e92de93761dcb316018 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Sun, 26 May 2013 12:17:38 -0400
Subject: Add "source" target to download and verify source.

---
diff --git a/build b/build
index b5578cd..393c0aa 100755
--- a/build
+++ b/build
@@ -1,5 +1,7 @@
 #! /usr/bin/make -f
 
+include ../source.mk
+
 nop:
 	@:
 
diff --git a/source.mk b/source.mk
new file mode 100644
index 0000000..91e2fd0
--- /dev/null
+++ b/source.mk
@@ -0,0 +1,20 @@
+upstream_archive = busybox-$(OPK_SOURCE_VERSION_UPSTREAM).tar.bz2
+upstream_url = http://www.busybox.net/downloads/$(upstream_archive)
+source_archive = ../busybox-$(OPK_SOURCE_VERSION_UPSTREAM).orig.tar.bz2
+keys = ACC9965B
+
+$(source_archive):
+	wget "$(upstream_url)"
+	set -e; if gpg --version >/dev/null 2>&1; then \
+		wget "$(upstream_url).sign"; \
+		[ -e ../keyring.gpg ] || \
+			gpg --keyring ../keyring.gpg --no-default-keyring \
+				--recv-keys $(keys); \
+		gpg --verify --keyring ../keyring.gpg \
+			"$(upstream_archive).sign"; \
+		sed -n 's/^MD5:  //p' "$(upstream_archive).sign" | md5sum -c; \
+		sed -n 's/^SHA1: //p' "$(upstream_archive).sign" | sha1sum -c; \
+	fi
+	mv "$(upstream_archive)" "$(source_archive)"
+
+source: $(source_archive)
--
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