Error to build snapshot

Hello.

I've tried to build latest postgresql-snapshot(02-Nov-2003) in WIN32_DEV on
MinGW(3.1.0-1) and MSYS(1.0.10-rc-2) with flex and bison following
"PostgreSQL Native Win32 Status Report" page's instruction.

However I've got following messages.

gcc -O2 -Wall -Wmissing-prototypes -Wmissing-declarations -L../../src/port
ac cess/SUBSYS.o
bootstrap/SUBSYS.o catalog/SUBSYS.o parser/SUBSYS.o commands/SUBSY
S.o executor/SUBSYS.o lib/SUBSYS.o libpq/SUBSYS.o main/SUBSYS.o
nodes/SUBSYS.o o
ptimizer/SUBSYS.o port/SUBSYS.o postmaster/SUBSYS.o regex/SUBSYS.o
rewrite/SUBSY S.o
storage/SUBSYS.o tcop/SUBSYS.o
-lpgport -o postgres
bootstrap/SUBSYS.o(.text+0x3ee2):bootstrap.c: undefined reference to
`sigsetmask '
commands/SUBSYS.o(.text+0x36a9):async.c: undefined reference to `kill'
libpq/SUBSYS.o(.text+0x63a4):pqsignal.c: undefined reference to `sigmask'
libpq/SUBSYS.o(.text+0x63b2):pqsignal.c: undefined reference to `sigmask'
libpq/SUBSYS.o(.text+0x63c0):pqsignal.c: undefined reference to `sigmask'
libpq/SUBSYS.o(.text+0x63ce):pqsignal.c: undefined reference to `sigmask'
libpq/SUBSYS.o(.text+0x63dc):pqsignal.c: undefined reference to `sigmask'
libpq/SUBSYS.o(.text+0x63ea):pqsignal.c: more undefined references to
`sigmask' follow

-------------------------------------------------------------------------

make[2]: *** [postgres] Error 1
make[2]: Leaving directory
`/home/Administrator/postgresql-snapshot/src/backend'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/Administrator/postgresql-snapshot/src'
make: *** [all] Error 2

Could you give me any hint to solve this?

Best Regards.