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Re: Undefined libgcc symbols and i386-linux-newlib

From: Tim Prince <tprince at myrealbox dot com>
To: Shaun Jackman <sjackman at gmail dot com>
Cc: newlib at sources dot redhat dot com
Date: Mon, 21 Nov 2005 14:39:42 -0800
Subject: Re: Undefined libgcc symbols and i386-linux-newlib
References: <7f45d9390511211415od57e691q@mail.gmail.com>
Reply-to: tprince at computer dot org

Shaun Jackman wrote:

Hello,

The i386-linux-newlib toolchain I've been attempting to build is
nearing completion. I'm working on shared libraries at the moment.
When I build libc.so, for whatever reason the resulting binary has
undefined references to symbols in libgcc.

i386-linux-newlib/newlib$ nm .libs/libc.so | grep ' U '
         U __divdi3
         U __moddi3
         U __udivdi3
         U __umoddi3

libgcc appeared to build and install correctly though:

$ nm /usr/local/i386-linux-newlib/lib/libgcc_s.so.1 | grep divdi3
00004aec T __divdi3
00004e54 T __udivdi3
$ nm /usr/local/lib/gcc/i386-linux-newlib/4.1.0/libgcc.a | grep divdi3
_divdi3.o:
00000000 T __divdi3
_udivdi3.o:
00000000 T __udivdi3

Normally, those functions are built as part of the gcc build, put into libgcc2, and then merged into libgcc.

References:
- Undefined libgcc symbols and i386-linux-newlib
  - From: Shaun Jackman

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