linux-kernel - Re: kbuild breaks um - fails to find util when linking

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Message-ID: <20080611152318.GA8099@c2.user-mode-linux.org>
Date:	Wed, 11 Jun 2008 11:23:18 -0400
From:	Jeff Dike <jdike@...toit.com>
To:	Sam Ravnborg <sam@...nborg.org>
Cc:	linux-kbuild <linux-kbuild@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: kbuild breaks um - fails to find util when linking

On Tue, Jun 10, 2008 at 09:03:07PM +0200, Sam Ravnborg wrote:
> Hi Jeff.
> 
> In an attempt to make the final link of vmlinux
> readable/hackable I have broken um build.
> 
> um used a special rule so it could use gcc as linker.
> With my changes we need to use ld to link vmlinux and
> ld now fails to locate util.
> 
> I hope you have a clue why. I tried various things but
> did not find out why ld cannot locate util.

This little patch fixes the -lutil problem linking vmlinux.o, but on
the final link, I get what appears to be every libc symbol
undefined...

Index: linux-2.6-git/arch/um/Makefile
===================================================================
--- linux-2.6-git.orig/arch/um/Makefile	2008-06-11 10:46:03.000000000 -0400
+++ linux-2.6-git/arch/um/Makefile	2008-06-11 11:19:05.000000000 -0400
@@ -104,7 +104,7 @@ archprepare: $(ARCH_SYMLINKS) $(ARCH_DIR
 prepare: $(ARCH_DIR)/include/kern_constants.h
 
 LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
-LINK-$(CONFIG_LD_SCRIPT_DYN) += -rpath /lib -rpath /usr/lib
+LINK-$(CONFIG_LD_SCRIPT_DYN) += -L/lib -L/usr/lib
 
 CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \
 	$(call cc-option, -fno-stack-protector,) \

	       		  	Jeff

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