linux-tools: Set $KBUILD_BUILD_TIMESTAMP from changelog and use it as man page date

svn path=/dists/trunk/linux-tools/; revision=22835

debian/changelog

@@ -1,3 +1,10 @@
+linux-tools (4.1.2-1~exp2) UNRELEASED; urgency=medium
+
+  * linux-tools: Set $KBUILD_BUILD_TIMESTAMP from changelog and use it as man
+    page date
+
+ -- Ben Hutchings <ben@decadent.org.uk>  Mon, 13 Jul 2015 19:52:17 +0100
+
 linux-tools (4.1.2-1~exp1) experimental; urgency=medium
 
   * New upstream release

debian/patches/series

@@ -4,3 +4,4 @@ tools-perf-install.patch
 usbip-document-tcp-wrappers.patch
 kbuild-fix-recordmcount-dependency.patch
 usbip-include-uninstalled-linux-usbip-h.patch
+tools-perf-man-date.patch

debian/patches/tools-perf-man-date.patch

@@ -0,0 +1,32 @@
+From: Ben Hutchings <ben@decadent.org.uk>
+Date: Mon, 13 Jul 2015 20:29:20 +0100
+Subject: perf tools: Use $KBUILD_BUILD_TIMESTAMP as man page date
+    
+This allows man pages to be built reproducibly.
+
+Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
+---
+--- a/tools/perf/Documentation/Makefile
++++ b/tools/perf/Documentation/Makefile
+@@ -120,6 +120,9 @@ endif
+ ifdef DOCBOOK_SUPPRESS_SP
+ XMLTO_EXTRA += -m manpage-suppress-sp.xsl
+ endif
++ifdef KBUILD_BUILD_TIMESTAMP
++ASCIIDOC_EXTRA += -a revdate=$(shell date -u -d '$(KBUILD_BUILD_TIMESTAMP)' +%Y-%m-%d)
++endif
+ 
+ SHELL_PATH ?= $(SHELL)
+ # Shell quote;
+--- a/tools/perf/Documentation/asciidoc.conf
++++ b/tools/perf/Documentation/asciidoc.conf
+@@ -71,6 +71,9 @@ ifdef::backend-docbook[]
+ [header]
+ template::[header-declarations]
+ <refentry>
++<refentryinfo>
++template::[docinfo]
++</refentryinfo>
+ <refmeta>
+ <refentrytitle>{mantitle}</refentrytitle>
+ <manvolnum>{manvolnum}</manvolnum>

debian/rules.real

@@ -1,4 +1,5 @@
 export DH_OPTIONS
+export KBUILD_BUILD_TIMESTAMP := $(shell dpkg-parsechangelog | sed -ne 's,^Date: ,,p')
 
 include debian/rules.defs