undefined reference to 'errno'

[Fernando Líbio <f_libio@xxxxxxxxxxxx>]

Greetings,

I can compile alphasim-1.0 perfectly on RedHat 7.3, but it just does not 
compile on Suse 9.0.
First I got some strange warnings, but then I installed the package 
compat-gcc-7.3-2.96.118.rpm and tryied to compile it with gcc296, but 
I'm getting an undefined reference to 'errno'. There is

#include <errno.h>
extern int errno

in the file with the error. I just don't know what to do anymore... any 
help would be very appreciated.

Thanks in advance.

Fernando Líbio