linux-kernel - Re: rsk7203_defconfig build error

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Date:	Tue, 05 Aug 2008 16:22:54 -0400
From:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
To:	lethal@...ux-sh.org, Adrian Bunk <bunk@...nel.org>
Cc:	linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: rsk7203_defconfig build error

At Tue, 5 Aug 2008 18:44:29 +0300,
Adrian Bunk wrote:
> 
> Hi Paul,
> 
> rsk7203_defconfig fails to build with the following error:
> 
> <--  snip  -->
> 
> ...
>   LD      .tmp_vmlinux1
> arch/sh/kernel/built-in.o:(__ksymtab+0xb8): undefined reference to `__udivsi3_i4i'
> arch/sh/kernel/built-in.o:(__ksymtab+0xc8): undefined reference to `__sdivsi3_i4i'
> make[1]: *** [.tmp_vmlinux1] Error 1
> 
> <--  snip  -->
> 
> That worked with 2.6.26, and these are far less undefined references 
> than in the cases where libgcc was missing.

This functions is not defined sh2 and sh2a.
See gcc-4.3.1/gcc/config/sh/lib1funcs.asm

Sorry I forget report.

This patch not tested.
Please test and apply.

Signed-off-by: Yoshinori Sato <ysato@...rs.sourceforge.jp>

diff --git a/arch/sh/kernel/sh_ksyms_32.c b/arch/sh/kernel/sh_ksyms_32.c
index 8f91653..6e1b1c2 100644
--- a/arch/sh/kernel/sh_ksyms_32.c
+++ b/arch/sh/kernel/sh_ksyms_32.c
@@ -107,10 +107,12 @@ DECLARE_EXPORT(__movmemSI12_i4);
  * GCC >= 4.2 emits these for division, as do GCC 4.1.x versions of the ST
  * compiler which include backported patches.
  */
-DECLARE_EXPORT(__sdivsi3_i4i);
 DECLARE_EXPORT(__udiv_qrnnd_16);
+#if !defined(CONFIG_CPU_SH2)
+DECLARE_EXPORT(__sdivsi3_i4i);
 DECLARE_EXPORT(__udivsi3_i4i);
 #endif
+#endif
 #else /* GCC 3.x */
 DECLARE_EXPORT(__movstr_i4_even);
 DECLARE_EXPORT(__movstr_i4_odd);

> Does it build with your toolchain?
> Do you have any clue what's going wrong here?
> 
> 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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-- 
Yoshinori Sato
<ysato@...rs.sourceforge.jp>
--
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