compiling postgres in winxp

Hi,

i'm trying to compile postgres in winxp for the first time in order to
try recent Magnus patch discussed here
http://archives.postgresql.org/pgsql-hackers/2007-11/msg01307.php

i've installed mingw, msys and msysDTK

i tried "./configure --without-zlib" and then "make install" and get this error.

someone can give a me a clue here?

make[2]: Entering directory `/home/General/postgresql-8.2.5/src/port'
gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Winline
-Wdeclaration-after-statement -Wendif-labels -fno-strict-aliasing
-I../../src/port -DFRONTEND -I../../src/include
-I./src/include/port/win32 -DEXEC_BACKEND
"-I../../src/include/port/win32"  -c -o getrusage.o getrusage.c
In file included from ../../src/include/rusagestub.h:17,                from getrusage.c:18:
/mingw/lib/gcc/mingw32/3.4.5/../../../../include/sys/time.h:27: error:
redefinition of `struct timezone'
/mingw/lib/gcc/mingw32/3.4.5/../../../../include/sys/time.h:40: error:
conflicting types for 'gettimeofday'
../../src/include/port.h:292: error: previous declaration of
'gettimeofday' was here
/mingw/lib/gcc/mingw32/3.4.5/../../../../include/sys/time.h:40: error:
conflicting types for 'gettimeofday'
../../src/include/port.h:292: error: previous declaration of
'gettimeofday' was here
make[2]: *** [getrusage.o] Error 1
make[2]: Leaving directory `/home/General/postgresql-8.2.5/src/port'
make[1]: *** [install] Error 2
make[1]: Leaving directory `/home/General/postgresql-8.2.5/src'
make: *** [install] Error 2


-- 
regards,
Jaime Casanova

"Programming today is a race between software engineers striving to
build bigger and better idiot-proof programs and the universe trying
to produce bigger and better idiots.
So far, the universe is winning."                                      Richard Cook