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Date: Sun, 16 Mar 2003 20:10:13 +0100
From: Adrian Bunk <bunk@fs.tum.de>
To: Andrew Morton <akpm@digeo.com>
Cc: linux-kernel@vger.kernel.org, "Martin J. Bligh" <mbligh@aracnet.com>
Subject: 2.5.64-mm8: link error with CONFIG_NUMA and !CONFIG_SMP
Message-ID: <20030316191012.GG10253@fs.tum.de>
References: <20030316024239.484f8bda.akpm@digeo.com>
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I get many errors at the final linking when compiling a kernel with
CONFIG_NUMA enabled but CONFIG_SMP disabled:

<--  snip  -->

...
/home/bunk/linux/kernel-2.5/linux-2.5.64-mm8/include/asm/topology.h:41: 
undefined reference to `cpu_2_node'
...

<--  snip  -->

the problem is that include/asm-i386/topology.h says:

<--  snip  -->

...
#ifdef CONFIG_NUMA
...
extern volatile int cpu_2_node[];
...

<--  snip  -->

but cpu_2_node is in arch/i386/kernel/smpboot.c that only gets included 
with CONFIG_SMP.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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