On Thu, 24 May 2001, Christopher D. Carothers wrote:
> Hi Havard --
>
> You need to link in the libgcc.a which is located at:
> /usr/lib/gcc-lib/i386-redhat-linux/egcs-2.91.66/libgcc.a
>
> > When I insert ahrs.o as a module (insmod ahrs.o) I get these errors:
> >
> > ahrs.o: unresolved symbol __udivdi3
> > ahrs.o: unresolved symbol __umoddi3
> >
> > I have no idea where the __udivdi3 and __umoddi3 are comming from and
> > what their purpose is. So any suggestions are welcome.
I had a similar problem but with __divdi3(). Linking in the libgcc.a
resolved the problem because the compiler is generating a reference to
this library.
I found out the __divdi3() is needed to do 64 bit division. Later I got
rid of my 64bit division, and didn't need to reference libgcc.a.
I suspect you are doing a divid & mod on a long long type.
Are you doing math on hrtime_t? hrtime_t is a long long.
To check, you can us the -S option in gcc to produce the assemble code
intermediate file. Then you can see were and why these function are needed
by the compiler.
Tony
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