[ruby-talk:14388] problem compiling 1.6.3

hi,
I just downloaded ruby 1.6.3 on my RedHat 6.2 machine

when trying to compile I get the following error:

----------------------------------
process.c: In function `rb_syswait':
process.c:597: warning: assignment from incompatible pointer type
process.c:600: warning: assignment from incompatible pointer type
process.c:602: warning: assignment from incompatible pointer type
process.c:609: warning: passing arg 2 of `signal' from incompatible pointer 
type
process.c:612: warning: passing arg 2 of `signal' from incompatible pointer 
type
process.c:614: warning: passing arg 2 of `signal' from incompatible pointer 
type
gcc -g -O2 -I. -I. -I/usr/local/include -c prec.c
gcc -g -O2 -I. -I. -I/usr/local/include -c random.c
gcc -g -O2 -I. -I. -I/usr/local/include -c range.c
gcc -g -O2 -I. -I. -I/usr/local/include -c re.c
gcc -g -O2 -I. -I. -I/usr/local/include -c regex.c
gcc -g -O2 -I. -I. -I/usr/local/include -c ruby.c
gcc -g -O2 -I. -I. -I/usr/local/include -c signal.c
signal.c: In function `ruby_posix_signal':
signal.c:286: argument `handler' doesn't match prototype
intern.h:298: prototype declaration
signal.c:289: warning: assignment from incompatible pointer type
signal.c:296: warning: comparison of distinct pointer types lacks a cast
signal.c: In function `sighandle':
signal.c:356: warning: passing arg 2 of `ruby_posix_signal' from incompatible 
pointer type
signal.c: In function `trap':
signal.c:465: warning: assignment from incompatible pointer type
signal.c:470: warning: assignment from incompatible pointer type
signal.c:474: warning: assignment from incompatible pointer type
signal.c:477: warning: assignment from incompatible pointer type
signal.c:480: warning: assignment from incompatible pointer type
signal.c:485: warning: assignment from incompatible pointer type
signal.c:494: warning: comparison of distinct pointer types lacks a cast
signal.c:494: warning: comparison of distinct pointer types lacks a cast
signal.c:527: warning: comparison of distinct pointer types lacks a cast
signal.c:564: warning: passing arg 2 of `ruby_posix_signal' from incompatible 
pointer type
signal.c: In function `Init_signal':
signal.c:648: warning: passing arg 2 of `ruby_posix_signal' from incompatible 
pointer type
signal.c:650: warning: passing arg 2 of `ruby_posix_signal' from incompatible 
pointer type
signal.c:653: warning: passing arg 2 of `ruby_posix_signal' from incompatible 
pointer type
signal.c:656: warning: passing arg 2 of `ruby_posix_signal' from incompatible 
pointer type
signal.c:659: warning: passing arg 2 of `ruby_posix_signal' from incompatible 
pointer type
signal.c:662: warning: passing arg 2 of `ruby_posix_signal' from incompatible 
pointer type
signal.c:666: warning: passing arg 2 of `ruby_posix_signal' from incompatible 
pointer type
signal.c:669: warning: passing arg 2 of `ruby_posix_signal' from incompatible 
pointer type
signal.c:672: warning: passing arg 2 of `ruby_posix_signal' from incompatible 
pointer type
make: *** [signal.o] Error 1

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can anybody help???
-- 
Markus Jais
http://www.mjais.de
[e-mail]
The road goes ever on and on - Bilbo Baggins