undefined reference caused toolchain builds to fail

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This message is generated from an autobuild system on an alpha platform.
The most recent build of bootstrap-gcc_3.0.4/toolchain on 9/16/02 failed due 
to the following error:

/bin/sh ./libtool --mode=link gcc -W -Wall -Wstrict-prototypes 
-Wmissing-prototy
pes -g -O2  -o cxxfilt   cplus-dem.o underscore.o ../libiberty/libiberty.a 
gcc -W -Wall -Wstrict-prototypes -Wmissing-prototypes -g -O2 -o cxxfilt 
cplus-de
m.o underscore.o  ../libiberty/libiberty.a
/usr/lib/crt1.o: In function `_start':
/usr/lib/crt1.o(.text+0x18): undefined reference to `main'
collect2: ld returned 1 exit status
make[3]: *** [cxxfilt] Error 1
make[3]: Leaving directory 
`/home/buildsys/build/intel1/bootstrap-gcc_3.0.4/nati
ve/toolchain/binutils'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory 
`/home/buildsys/build/intel1/bootstrap-gcc_3.0.4/nati
ve/toolchain/binutils'
make[1]: *** [all-recursive-am] Error 2
make[1]: Leaving directory 
`/home/buildsys/build/intel1/bootstrap-gcc_3.0.4/nati
ve/toolchain/binutils'
make: *** [all-binutils] Error 2
~

This error has been causing problem to our builds many times. Any idea 
or pointer?
Thanks.

-- 
Dzung V. Nguyen                     email: [email protected]
Alpha Linux Group                   http://linux.iol.unh.edu/clp
InterOperability Laboratory
7 Leavitt Lane                      phone: (603) - 862 - 0401
Durham, NH 03824                    fax  : (603) - 862 - 4181