postgresql 8.0 and tsearch2 install under cygwin

Hello,
I've just made successful installation of PostgreSQL 8.0 on Cygwin but I
have some problems with installing tsearch2 contrib module. This is what
make produce:

dict_ispell.o(.text+0x1ec):dict_ispell.c: undefined reference to
`_pg_strcasecmp
'
dict_ispell.o(.text+0x31e):dict_ispell.c: undefined reference to
`_pg_strcasecmp
'
dict_ispell.o(.text+0x425):dict_ispell.c: undefined reference to
`_pg_strcasecmp
'
wparser_def.o(.text+0xd1f):wparser_def.c: undefined reference to
`_pg_strcasecmp
'
wparser_def.o(.text+0xd7e):wparser_def.c: undefined reference to
`_pg_strcasecmp
'
wparser_def.o(.text+0xdb7):wparser_def.c: more undefined references to
`_pg_strc
asecmp' follow
ispell/SUBSYS.o(.text+0x9d3):spell.c: undefined reference to
`_pg_strncasecmp'
ispell/SUBSYS.o(.text+0xa3a):spell.c: undefined reference to
`_pg_strncasecmp'
ispell/SUBSYS.o(.text+0xa6a):spell.c: undefined reference to
`_pg_strncasecmp'
ispell/SUBSYS.o(.text+0xa91):spell.c: undefined reference to
`_pg_strncasecmp'
collect2: ld returned 1 exit status
dllwrap: gcc exited with status 1
make: *** [libtsearch2.a] Error 1

Any solutions ?

ML