BOUNCE rtl@rtlinux.org: Approval required: Non-member submissionfrom [Suessmilch Bernd <Bernd.Suessmilch@SWAROVSKI.COM>] (fwd)

[Der Herr Hofrat <der.herr@hofr.at>]

>From owner-rtl Mon May 28 09:23:08 2001
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From: Suessmilch Bernd <Bernd.Suessmilch@SWAROVSKI.COM>
To: "'rtl@fsmlabs.com'" <rtl@fsmlabs.com>
Subject: RE: [rtl] uresolved symbol __udivdi3 and __umoddi3
Date: Mon, 28 May 2001 16:53:35 +0200
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Hello Havard,

it is me again. I think, my previous answer to your question was
precipitant.
Compiling with "-O2" may  not solve your problem, but here is
a solution that works:
Use the compiler flags "-static -r -nostartfile -nostdlib -lgcc". 

The explanation:
1. __divdi3 and __udivdi3 is used to compute "/" with operands
   of type "long long" or "unsigned long long", respectively.
   The are defined in libgcc.a. Therefore, you have to use "-lgcc"

2. When linking a program against libgcc, gcc automatically adds
   a function for program startup. A kernel module must not linked
   with this startup function. Therefore you need the flag "-nostartfile".

3. You cannot use libc in kernel space. Therefore you need the flag
   "-nostdlib".

4. Kernel modules have to be relocatable. Therefore you need the "-r" flag.


Sorry for my previous misleading posting.

Regards,
Bernd