From b2bb7481c59e42ba0517ec29a9abbc9f118a4fff Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Thu, 26 Jun 2014 22:26:58 -0400
Subject: source.mk, keyring.gpg: New files.

---
diff --git a/build b/build
index 9c3aacd..df967ee 100755
--- a/build
+++ b/build
@@ -1,5 +1,7 @@
 #! /usr/bin/make -f
 
+include ../source.mk
+
 nop:
 	@:
 
diff --git a/keyring.gpg b/keyring.gpg
new file mode 100644
index 0000000..764ee3b
--- /dev/null
+++ b/keyring.gpg
Binary files differ
diff --git a/source.mk b/source.mk
new file mode 100644
index 0000000..b6101bb
--- /dev/null
+++ b/source.mk
@@ -0,0 +1,19 @@
+upstream_archive = make-$(OPK_SOURCE_VERSION_UPSTREAM).tar.gz
+upstream_url = http://ftp.gnu.org/gnu/make/$(upstream_archive)
+source_archive = ../$(OPK_SOURCE)-$(OPK_SOURCE_VERSION_UPSTREAM).orig.tar.gz
+keys = '3D25 54F0 A153 38AB 9AF1  BB9D 96B0 4715 6338 B6D4'
+
+$(source_archive):
+	wget -c '$(upstream_url)'
+	set -e; if gpg --version >/dev/null 2>&1; then \
+		wget -c '$(upstream_url).sig'; \
+		[ -e ../keyring.gpg ] || \
+			gpg --keyring ../keyring.gpg --no-default-keyring \
+				--recv-keys $(keys) || true; \
+		rm -f ../keyring.gpg~; \
+		gpg --verify --keyring ../keyring.gpg \
+			'$(upstream_archive).sig'; \
+	fi
+	mv '$(upstream_archive)' '$(source_archive)'
+
+source: $(source_archive)
--
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