From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
To: <linux-kernel@vger.kernel.org>
Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>,
Michal Marek <mmarek@suse.cz>,
Stephen Warren <swarren@nvidia.com>,
Grant Likely <grant.likely@secretlab.ca>,
<linux-kbuild@vger.kernel.org>
Subject: [PATCH] Kbuild: Avoid DTB rebuilds if source files are untouched
Date: Wed, 3 Apr 2013 12:42:21 +0530 [thread overview]
Message-ID: <1364973141-16354-1-git-send-email-vgupta@synopsys.com> (raw)
Currently, for every ARC kernel build I see the following:
--------------->8-----------------
DTB arch/arc/boot/dts/angel4.dtb.S
AS arch/arc/boot/dts/angel4.dtb.o
LD arch/arc/boot/dts/built-in.o
rm arch/arc/boot/dts/angel4.dtb.S <-- forces rebuild next iter
CHK kernel/config_data.h
--------------->8-----------------
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: linux-kbuild@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
scripts/Makefile.lib | 2 ++
1 file changed, 2 insertions(+)
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 07125e6..17f96f4 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -265,6 +265,8 @@ cmd_dt_S_dtb= \
echo '.balign STRUCT_ALIGNMENT'; \
) > $@
+.PRECIOUS: $(obj)/%.dtb.S
+
$(obj)/%.dtb.S: $(obj)/%.dtb
$(call cmd,dt_S_dtb)
--
1.7.10.4
next reply other threads:[~2013-04-03 7:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-03 7:12 Vineet Gupta [this message]
2013-04-03 7:14 ` Vineet Gupta
2013-04-03 16:18 ` Stephen Warren
2013-04-04 5:30 ` Vineet Gupta
2013-04-04 17:36 ` Stephen Warren
2013-04-09 13:37 ` Vineet Gupta
2013-04-09 14:10 ` Vineet Gupta
2013-04-12 7:40 ` Vineet Gupta
2013-04-12 21:52 ` Stephen Warren
2013-04-15 13:59 ` Vineet Gupta
2013-04-15 17:12 ` Stephen Warren
2013-04-16 15:53 ` James Hogan
2013-04-16 16:02 ` James Hogan
2013-04-17 4:15 ` Vineet Gupta
2013-04-17 4:13 ` Vineet Gupta
2013-04-17 9:13 ` James Hogan
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