linux-kernel - Re: CONFIG_NLS=m resulting in undefined reference to utf16s_to

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Message-ID: <20110113162755.GA5872@fedora14-r610.oslab.blr.amer.dell.com>
Date:	Thu, 13 Jan 2011 08:03:56 -0800
From:	<Narendra_K@...l.com>
To:	<jbarnes@...tuousgeek.org>
CC:	<lenb@...nel.org>, <linux-kernel@...r.kernel.org>,
	<linux-next@...r.kernel.org>, <sfr@...b.auug.org.au>,
	<Matt_Domsch@...l.com>, <Charles_Rose@...l.com>,
	<Surya_Prabhakar@...l.com>
Subject: Re: CONFIG_NLS=m resulting in undefined reference to
 utf16s_to_utf8s causing build failure

On Thu, Jan 13, 2011 at 09:25:56PM +0530, Jesse Barnes wrote:
> On Wed, 12 Jan 2011 22:23:55 -0500 (EST)
> Len Brown <lenb@...nel.org> wrote:
> > > So there's no other ACPI code that depends on this function?  I'd hate
> > > to make PCI depend on NLS, so assuming ACPI doesn't need it (in which
> > > case the select or depend should be there), I guess it should be pulled
> > > into a common file that will always be included.
> > 
> > No, nothing in the ACPI code uses utf16s_to_utf8s.
> > 
> > I don't know anything about NLS, but it appears to be
> > something that file systems (befs, cifs, fat, hfs, isofs, jfs, etc)
> > use to to support native languages.
> > 
> > BTW. I don't understand why pci-label.o appears twice above.
> > It used to be just the 2nd one, that depends on CONFIG_DMI.
> 
> Ok, I'll drop this patch for now then since I haven't seen a fix yet
> and need to get Linus the rest of the changes.

Jesse,

I just compile tested a fix on the following lines without any failure.
If it is acceptable, i will send a patch in half an hour. It builds

diff --git a/fs/Makefile b/fs/Makefile
index db71a5b..2a39275 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -86,7 +86,7 @@ obj-$(CONFIG_NFS_FS)		+= nfs/
 obj-$(CONFIG_EXPORTFS)		+= exportfs/
 obj-$(CONFIG_NFSD)		+= nfsd/
 obj-$(CONFIG_LOCKD)		+= lockd/
-obj-$(CONFIG_NLS)		+= nls/
+obj-y				+= nls/
 obj-$(CONFIG_SYSV_FS)		+= sysv/
 obj-$(CONFIG_CIFS)		+= cifs/
 obj-$(CONFIG_NCP_FS)		+= ncpfs/
diff --git a/fs/nls/Makefile b/fs/nls/Makefile
index f499dd7..c172fbb 100644
--- a/fs/nls/Makefile
+++ b/fs/nls/Makefile
@@ -2,7 +2,7 @@
 # Makefile for native language support
 #
 
-obj-$(CONFIG_NLS)		+= nls_base.o
+obj-y				+= nls_base.o
 
 obj-$(CONFIG_NLS_CODEPAGE_437)	+= nls_cp437.o
 obj-$(CONFIG_NLS_CODEPAGE_737)	+= nls_cp737.o

With regards,
Narendra K--
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