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Date: Thu, 15 Jul 2010 10:42:33 +0200
From: Michal Marek <mmarek@suse.cz>
To: "Zheng, Jiajia" <jiajia.zheng@intel.com>
Cc: "Guy, Wey-Yi W" <wey-yi.w.guy@intel.com>, linux-kernel@vger.kernel.org,
        linux-kbuild@vger.kernel.org
Subject: Re: "make rpm" failed with parameter "--scm-only"
Message-ID: <20100715084233.GA5835@sepie.suse.cz>
References: <A24AE1FFE7AEC5489F83450EE98351BF1BD77643B1@shsmsx502.ccr.corp.intel.com>
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On Thu, Jul 15, 2010 at 11:23:19AM +0800, Zheng, Jiajia wrote:
> Hi Marek,
> 
> This is jiajia, Intel Wireless QA. 
> When I was compiling iwlwifi-2.6, "make rpm" failed. 
> 
> # make rpm
> make clean
> set -e; cd ..; ln -sf /usr/src/iwlwifi-2.6 kernel-2.6.35rc4wl
> /bin/sh /usr/src/iwlwifi-2.6/scripts/setlocalversion --scm-only > /usr/src/iwlwifi-2.6/.scmversion
> cat: .scmversion: input file is output file
> make[1]: *** [rpm] Error 1
> make: *** [rpm] Error 2
> 
> If the "--scm-only" parameter is removed from iwlwifi-2.6/scripts/package/Makefile, "make rpm" works. 
> 
> I noticed that it was introduced by commit#09155120cf0ffe6f0c8aba3aa625831405b65996.

Ah crap :-/. The following patch should fix it. BTW, if you remove the
--scm-only option and use the LOCALVERSION mechanism, then the resulting
kernel release string will have the localversion twice.

>>From 1df62f9175665a0573fe9708cb8604584a9b7bd5 Mon Sep 17 00:00:00 2001
From: Michal Marek <mmarek@suse.cz>
Date: Thu, 15 Jul 2010 10:36:37 +0200
Subject: [PATCH] kbuild: Fix make rpm

make rpm was broken by commit 0915512:
make clean
set -e; cd ..; ln -sf /usr/src/iwlwifi-2.6 kernel-2.6.35rc4wl
/bin/sh /usr/src/iwlwifi-2.6/scripts/setlocalversion --scm-only >
/usr/src/iwlwifi-2.6/.scmversion
cat: .scmversion: input file is output file
make[1]: *** [rpm] Error 1

Reported-by: "Zheng, Jiajia" <jiajia.zheng@intel.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>

diff --git a/scripts/package/Makefile b/scripts/package/Makefile
index 3a681ef..d2c29b6 100644
--- a/scripts/package/Makefile
+++ b/scripts/package/Makefile
@@ -44,7 +44,7 @@ rpm-pkg rpm: $(objtree)/kernel.spec FORCE
 	fi
 	$(MAKE) clean
 	$(PREV) ln -sf $(srctree) $(KERNELPATH)
-	$(CONFIG_SHELL) $(srctree)/scripts/setlocalversion --scm-only > $(objtree)/.scmversion
+	$(CONFIG_SHELL) $(srctree)/scripts/setlocalversion --save-scmversion
 	$(PREV) tar -cz $(RCS_TAR_IGNORE) -f $(KERNELPATH).tar.gz $(KERNELPATH)/.
 	$(PREV) rm $(KERNELPATH)
 	rm -f $(objtree)/.scmversion
diff --git a/scripts/setlocalversion b/scripts/setlocalversion
index d6a866e..951b067 100755
--- a/scripts/setlocalversion
+++ b/scripts/setlocalversion
@@ -10,13 +10,13 @@
 #
 
 usage() {
-	echo "Usage: $0 [--scm-only] [srctree]" >&2
+	echo "Usage: $0 [--save-scmversion] [srctree]" >&2
 	exit 1
 }
 
 scm_only=false
 srctree=.
-if test "$1" = "--scm-only"; then
+if test "$1" = "--save-scmversion"; then
 	scm_only=true
 	shift
 fi
@@ -131,7 +131,10 @@ collect_files()
 }
 
 if $scm_only; then
-	scm_version
+	if test ! -e .scmversion; then
+		res=$(scm_version)
+		echo "$res" >.scmversion
+	fi
 	exit
 fi