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Date:	Mon, 22 Oct 2007 16:24:06 -0400
From:	Jeff Dike <jdike@...toit.com>
To:	Al Viro <viro@....linux.org.uk>
Cc:	WANG Cong <xiyou.wangcong@...il.com>, Nix <nix@...eri.org.uk>,
	Paolo Giarrusso <p.giarrusso@...il.com>,
	user-mode-linux-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, Rob Landley <rob@...dley.net>
Subject: Re: [uml-devel] User Mode Linux still doesn't build in 2.6.23-final.

On Sun, Oct 21, 2007 at 04:43:46PM +0100, Al Viro wrote:
> Fallout continues; I've got a preliminary patch for it.  Basically, we
> need to stop doing -U__i386__ et.al.

Thanks, Al.  You need the patch below in order to get a working UML -
feel free to fold it into this.

				Jeff

-- 
Work email - jdike at linux dot intel dot com


KERNEL_DEFINES needs whitespace trimmed, otherwise this whitespace
crunching done by make fools the patsubst which is used to remove
KERNEL_DEFINES from USER_CFLAGS.

Signed-off-by: Jeff Dike <jdike@...ux.intel.com>
---
 arch/um/Makefile |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

Index: linux-2.6/arch/um/Makefile
===================================================================
--- linux-2.6.orig/arch/um/Makefile	2007-10-22 16:19:38.000000000 -0400
+++ linux-2.6/arch/um/Makefile	2007-10-22 16:19:44.000000000 -0400
@@ -70,9 +70,12 @@ include $(srctree)/$(ARCH_DIR)/Makefile-
 # in KBUILD_CFLAGS.  Otherwise, it would cause ld to complain about the two different
 # errnos.
 # These apply to kernelspace only.
+#
+# strip leading and trailing whitespace to make the USER_CFLAGS removal of these
+# defines more robust
 
-KERNEL_DEFINES = -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
-	-Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES)
+KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
+			 -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES))
 KBUILD_CFLAGS += $(KERNEL_DEFINES)
 KBUILD_CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
 
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