File xen.ac977f542b92790f87edabbb9b16b4c52a85ed98.patch of Package xen

From: Olaf Hering <olaf@aepfle.de>
Date: Wed, 7 Jan 2015 11:09:50 +0100
Subject: ac977f542b92790f87edabbb9b16b4c52a85ed98

use more fixed strings to build the hypervisor

It should be possible to repeatedly build identical sources and get
identical binaries, even on different hosts at different build times.
This fails for xen.gz and xen.efi because current time and buildhost
get included in the binaries.

Provide variables XEN_BUILD_DATE, XEN_BUILD_TIME and XEN_BUILD_HOST
which the build environment can set to fixed strings to get a
reproducible build.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
---
 xen/Makefile | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

--- a/xen/Makefile
+++ b/xen/Makefile
@@ -1,22 +1,25 @@
 # This is the correct place to edit the build version.
 # All other places this is stored (eg. compile.h) should be autogenerated.
 export XEN_VERSION       = 4
 export XEN_SUBVERSION    = 5
 export XEN_EXTRAVERSION ?= .5$(XEN_VENDORVERSION)
 export XEN_FULLVERSION   = $(XEN_VERSION).$(XEN_SUBVERSION)$(XEN_EXTRAVERSION)
 -include xen-version
 
 export XEN_WHOAMI	?= $(USER)
 export XEN_DOMAIN	?= $(shell ([ -x /bin/dnsdomainname ] && /bin/dnsdomainname) || ([ -x /bin/domainname ] && /bin/domainname || echo [unknown]))
+export XEN_BUILD_DATE	?= $(shell LC_ALL=C date)
+export XEN_BUILD_TIME	?= $(shell LC_ALL=C date +%T)
+export XEN_BUILD_HOST	?= $(shell hostname)
 
 export BASEDIR := $(CURDIR)
 export XEN_ROOT := $(BASEDIR)/..
 
 EFI_MOUNTPOINT ?= $(BOOT_DIR)/efi
 
 .PHONY: default
 default: build
 
 .PHONY: dist
 dist: install
 
@@ -117,29 +120,29 @@ delete-unfresh-files:
 	fi
 
 .banner: Makefile
 	@if which figlet >/dev/null 2>&1 ; then \
 		echo " Xen $(XEN_FULLVERSION)" | figlet -f tools/xen.flf > $@.tmp; \
 	else \
 		echo " Xen $(XEN_FULLVERSION)" > $@.tmp; \
 	fi
 	@mv -f $@.tmp $@
 
 # compile.h contains dynamic build info. Rebuilt on every 'make' invocation.
 include/xen/compile.h: include/xen/compile.h.in .banner
-	@sed -e 's/@@date@@/$(shell LC_ALL=C date)/g' \
-	    -e 's/@@time@@/$(shell LC_ALL=C date +%T)/g' \
+	@sed -e 's/@@date@@/$(XEN_BUILD_DATE)/g' \
+	    -e 's/@@time@@/$(XEN_BUILD_TIME)/g' \
 	    -e 's/@@whoami@@/$(XEN_WHOAMI)/g' \
 	    -e 's/@@domain@@/$(XEN_DOMAIN)/g' \
-	    -e 's/@@hostname@@/$(shell hostname)/g' \
+	    -e 's/@@hostname@@/$(XEN_BUILD_HOST)/g' \
 	    -e 's!@@compiler@@!$(shell $(CC) $(CFLAGS) --version 2>&1 | head -1)!g' \
 	    -e 's/@@version@@/$(XEN_VERSION)/g' \
 	    -e 's/@@subversion@@/$(XEN_SUBVERSION)/g' \
 	    -e 's/@@extraversion@@/$(XEN_EXTRAVERSION)/g' \
 	    -e 's!@@changeset@@!$(shell tools/scmversion $(XEN_ROOT) || echo "unavailable")!g' \
 	    < include/xen/compile.h.in > $@.new
 	@cat .banner
 	@$(PYTHON) tools/fig-to-oct.py < .banner >> $@.new
 	@mv -f $@.new $@
 
 include/asm-$(TARGET_ARCH)/asm-offsets.h: arch/$(TARGET_ARCH)/asm-offsets.s
 	@(set -e; \