linux-kernel - Re: (Try #3) [Patch 2/8] MIPS: Remove 'TOPDIR' from Makefiles

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Date:	Fri, 11 Jan 2008 14:17:54 +0000
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	WANG Cong <xiyou.wangcong@...il.com>
Cc:	Sam Ravnborg <sam@...nborg.org>, Andreas Schwab <schwab@...e.de>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-kbuild@...r.kernel.org, Andrew Morton <akpm@...l.org>,
	linux-mips@...ux-mips.org
Subject: Re: (Try #3) [Patch 2/8] MIPS: Remove 'TOPDIR' from Makefiles

On Wed, Jan 02, 2008 at 02:21:36PM +0800, WANG Cong wrote:

> >> Shouldn't that use $(LINUXINCLUDE), or $(KBUILD_CPPFLAGS)?
> >It would be better to use $(LINUXINCLUDE) as we then pull in all config
> >symbols too and do not have to hardcode kbuild internal names (include2).
> 
> OK. Refine this patch.

LDSCRIPT also needed fixing to get builds in a separate object directory
working again.

I've applied below fix.

  Ralf

>From 8babf06e1265214116fb8ffc634c04df85597c52 Mon Sep 17 00:00:00 2001
From: WANG Cong <xiyou.wangcong@...il.com>
Date: Wed, 2 Jan 2008 14:21:36 +0800
Subject: [PATCH] [MIPS] Lasat: Fix built in separate object directory.

Signed-off-by: WANG Cong <xiyou.wangcong@...il.com>

[Ralf: The LDSCRIPT script needed fixing, too]

Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>

diff --git a/arch/mips/lasat/image/Makefile b/arch/mips/lasat/image/Makefile
index 5332449..7ccd40d 100644
--- a/arch/mips/lasat/image/Makefile
+++ b/arch/mips/lasat/image/Makefile
@@ -12,11 +12,11 @@ endif
 
 MKLASATIMG = mklasatimg
 MKLASATIMG_ARCH = mq2,mqpro,sp100,sp200
-KERNEL_IMAGE = $(TOPDIR)/vmlinux
+KERNEL_IMAGE = vmlinux
 KERNEL_START = $(shell $(NM) $(KERNEL_IMAGE) | grep " _text" | cut -f1 -d\ )
 KERNEL_ENTRY = $(shell $(NM) $(KERNEL_IMAGE) | grep kernel_entry | cut -f1 -d\ )
 
-LDSCRIPT= -L$(obj) -Tromscript.normal
+LDSCRIPT= -L$(srctree)/$(obj) -Tromscript.normal
 
 HEAD_DEFINES := -D_kernel_start=0x$(KERNEL_START) \
 		-D_kernel_entry=0x$(KERNEL_ENTRY) \
@@ -24,7 +24,7 @@ HEAD_DEFINES := -D_kernel_start=0x$(KERNEL_START) \
 		-D TIMESTAMP=$(shell date +%s)
 
 $(obj)/head.o: $(obj)/head.S $(KERNEL_IMAGE)
-	$(CC) -fno-pic $(HEAD_DEFINES) -I$(TOPDIR)/include -c -o $@ $<
+	$(CC) -fno-pic $(HEAD_DEFINES) $(LINUXINCLUDE) -c -o $@ $<
 
 OBJECTS = head.o kImage.o
 
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