other/4274: Building Gcc 3.0.1 fails under Cygwin

[Bruce@EckelObjects.com]

>Number:         4274
>Category:       other
>Synopsis:       Building Gcc 3.0.1 fails under Cygwin
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Sep 09 06:56:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Bruce Eckel
>Release:        gcc 3.0.1
>Organization:
>Environment:
Cygwin on Win2000
>Description:
ln: `./stl_hash_fun.h': File exists
sed -e '/^#/s/\([ABCDEFGHIJKLMNOPQRSTUVWXYZ_][ABCDEFGHIJKLMNOPQRSTUVWXYZ_]*\)/_G
LIBCPP_\1/g' \
    -e 's,^#include "\(.*\)",#include <bits/\1>,g' \
    < /home/Administrator/gcc/gcc-3.0.1/i686-pc-cygwin/libstdc++-v3/../gcc/gthr.
h > i686-pc-cygwin/bits/gthr.h
cannot open /home/Administrator/gcc/gcc-3.0.1/i686-pc-cygwin/libstdc++-v3/../gcc
/gthr.h: no such file
make[3]: *** [i686-pc-cygwin/bits/gthr.h] Error 1
make[3]: Leaving directory `/home/Administrator/gcc/gcc-3.0.1/i686-pc-cygwin/lib
stdc++-v3/include'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/Administrator/gcc/gcc-3.0.1/i686-pc-cygwin/lib
stdc++-v3'
make[1]: *** [all-recursive-am] Error 2
make[1]: Leaving directory `/home/Administrator/gcc/gcc-3.0.1/i686-pc-cygwin/lib
stdc++-v3'
make: *** [all-target-libstdc++-v3] Error 2
>How-To-Repeat:
./configure
./make
Gets to the above point, then fails as shown above.
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: