please help me!

Dear sirs,
I try to make use PostgreSQL 7.3.4 for MS Window 2000,
I have conformed all steps to build from the documents, but there is trouble.
When I run "make" it alway happen:
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................
make[4]: `SUBSYS.o' is up to date.
make[4]: Leaving directory `/cygdrive/e/cygwin/postgresql-7.3.4/src/backend/util
s/mb'
make[3]: Leaving directory `/cygdrive/e/cygwin/postgresql-7.3.4/src/backend/util
s'
dlltool --dllname postgres.exe --output-exp postgres.exp --def postgres.def
gcc -O2 -Wall -Wmissing-prototypes -Wmissing-declarations -L/usr/local/lib  -o p
ostgres.exe -Wl,--base-file,postgres.base postgres.exp access/SUBSYS.o bootstrap
/SUBSYS.o catalog/SUBSYS.o parser/SUBSYS.o commands/SUBSYS.o executor/SUBSYS.o l
ib/SUBSYS.o libpq/SUBSYS.o main/SUBSYS.o nodes/SUBSYS.o optimizer/SUBSYS.o port/
SUBSYS.o postmaster/SUBSYS.o regex/SUBSYS.o rewrite/SUBSYS.o storage/SUBSYS.o tc
op/SUBSYS.o utils/SUBSYS.o -lz -lreadline -lcygipc
libpq/SUBSYS.o(.text+0x1fcf):crypt.c: undefined reference to `_crypt'
Info: resolving _optarg by linking to __imp__optarg (auto-import)
Info: resolving _optind by linking to __imp__optind (auto-import)
Info: resolving _opterr by linking to __imp__opterr (auto-import)
Info: resolving _optreset by linking to __imp__optreset (auto-import)
collect2: ld returned 1 exit status
make[2]: *** [postgres] Error 1
make[2]: Leaving directory `/cygdrive/e/cygwin/postgresql-7.3.4/src/backend'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/cygdrive/e/cygwin/postgresql-7.3.4/src'
make: *** [all] Error 2

DongHD@donghd /cygdrive/e/cygwin/postgresql-7.3.4

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What I have to now?
Best regards,
Hoang Duc Dong