linux-kernel - [PATCH] override build timestamp

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Message-ID: <20070216215213.GA10732@aepfle.de>
Date:	Fri, 16 Feb 2007 22:52:13 +0100
From:	Olaf Hering <olaf@...fle.de>
To:	Andrew Morton <akpm@...l.org>, Sam Ravnborg <sam@...nborg.org>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] override build timestamp


Pass a timestamp to kbuild via an enviroment variable.

    TZ=UTC BUILD_TIMESTAMP=2007-01-01 make -kj O=../O vmlinux

This can be used when the kernel source is in a SCM and uname -v
is supposed to give the commit date and not the package build time.

Signed-off-by: Olaf Hering <olaf@...fle.de>

---
 scripts/mkcompile_h |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

Index: linux-2.6/scripts/mkcompile_h
===================================================================
--- linux-2.6.orig/scripts/mkcompile_h
+++ linux-2.6/scripts/mkcompile_h
@@ -30,7 +30,12 @@ UTS_VERSION="#$VERSION"
 CONFIG_FLAGS=""
 if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi
 if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi
-UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS `LC_ALL=C LANG=C date`"
+if [ -n "$BUILD_TIMESTAMP" ]; then
+  TIMESTAMP="`LC_ALL=C LANG=C date -d "$BUILD_TIMESTAMP"`"
+else
+  TIMESTAMP="`LC_ALL=C LANG=C date`"
+fi
+UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP"
 
 # Truncate to maximum length
 
-
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