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Hi i am trying to compile this file http://www.trekmush.org/files/pennmush-attyspace.tgz . I get this Error:

/usr/bin/ld: warning multiple definitions of symbol _signal
sig.o definition of _signal in section (__TEXT,__text)
/usr/lib/libm.dylib(signal.o) definition of _signal
/usr/bin/ld: warning multiple definitions of symbol _regcomp
regexp.o definition of _regcomp in section (__TEXT,__text)
/usr/lib/libm.dylib(regcomp.o) definition of _regcomp
/usr/bin/ld: warning multiple definitions of symbol _regexec
regexp.o definition of _regexec in section (__TEXT,__text)
/usr/lib/libm.dylib(regexec.o) definition of _regexec
/usr/bin/ld: Undefined symbols:
__mcleanup
/usr/bin/ld: warning unused multiple definitions of symbol _panic
game.o definition of _panic in section (__TEXT,__text)
/usr/lib/libm.dylib(panic.o) unused definition of _panic
make[1]: *** [netmud] Error 1
make: *** [all] Error 2


Any idea on how to fix this probblem?