Re: crosstool bloat

[David Karlton <dkarlton at themediamall dot com>]

Dave Korn wrote:
> ----Original Message----
>
> > From: David Karlton
> > Sent: 19 September 2005 18:41
>
>
> > BINUTILS_DIR=binutils-2.16.1
> >
> > 4) Ran 'sh ./demo-mipsel.sh'
> >
> >
> > It ran for about an hour, then I got:
>
>
> /home/dkarlton/crosstool-0.38/build/mipsel-unknown-linux-gnu/gcc-3.3.4-glibc
> -2.3.2/gcc-3.3.4/gcc/libgcc2.c
>
> > -fexceptions -fnon-call-exceptions -o libgcc/./_divdi3.o
> > /tmp/ccsFB15B.s: Assembler messages:
> > /tmp/ccsFB15B.s:956: Error: operation combines symbols in different
> > segments make[2]: *** [libgcc/./_divdi3.o] Error 1
>
>
>   Known bug in 3.3 series vs MIPS.  You either need a more recent gcc or to
> backport the fix at
>
> http://gcc.gnu.org/ml/gcc-patches/2004-06/msg01187.html
>
> (Found from 
>
> http://www.google.co.uk/search?q=%22operation+combines+symbols+in+different+
> segments%22+mipsel&sourceid=mozilla-search&start=0&start=0&ie=utf-8&oe=utf-8
> &client=firefox-a&rls=org.mozilla:en-GB:official
>
> then following the thread starting at 
>
> http://sources.redhat.com/ml/binutils/2005-02/msg00644.html
>
> and considering the possible gas-patch at 
>
> http://sources.redhat.com/ml/binutils/2005-02/msg00648.html
>
> but it seems better to fix gcc by following Richard Sandiford's advice at
>
> http://sources.redhat.com/ml/binutils/2005-02/msg00702.html
>
> which points to the thread at 
>
> http://gcc.gnu.org/ml/gcc-patches/2004-06/msg00970.html
>
> which eventually ends up there.  Phew!)
>
>
>
>     cheers,
>       DaveK

Thanks for the link!  I modified linux.h (there was no linux64.h in my 
mips folder) to remove the ASM_PREFERRED_EH_DATA_FORMAT define, and am 
trying to build again.

Stupid question: if our target device has gcc 3.3.4 and glibc 2.3.2 
libraries installed (and we can't change this), can I potentially build 
a more updated toolchain (eg. gcc 4.0) and have binaries compiled by it 
be backward compatible to run on the target machine?

dk


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