Compilation probelems

Hi,

I am trying to compile postgres 6.3.2 on
$ uname -a
Linux portos.wwwtech.net.pl 2.0.34 #1 Tue Jun 23 02:10:50 EDT 1998
i586 unknown

and I get an error:
...
gmake[2]: Entering directory `/home/postgresql/postgresql-
6.3.2/src/backend/bootstrap'
gcc -I../../include -I../../backend -Wall -Wmissing-prototypes -
I.. -Wno-error -c bootstrap.c -o bootstrap.o
bootstrap.c:160: `F_BOOLIN' undeclared here (not in a function)
bootstrap.c:160: initializer element for `Procid[0].inproc' is not
constant
bootstrap.c:160: `F_BOOLOUT' undeclared here (not in a function)
bootstrap.c:160: initializer element for `Procid[0].outproc' is not
constant
bootstrap.c:161: `F_BYTEAIN' undeclared here (not in a function)
bootstrap.c:161: initializer e ...

Where do I get wrong :-) ?
Can you help?! Please write on wbogusz(at)batory(dot)org(dot)pl

Regards,
Wojtek Bogusz