configure hangs after checking whether SCTP is supported

[Anthony Jurado Jr <ajurado@xxxxxxxxxx>]

I'm trying to install the Apache httpd
server on a Red Hat Enterprise Linux Server release 5.1 (Tikanga).  The
output of uname -a is:
Linux server_name 2.6.18-53.1.19.el5
#1 SMP Tue Apr 22 03:01:10 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux. 

I get the same results for both 2.2.4
and 2.2.8.  Basically, in the /opt/httpd-2.2.8 directory I run 
./configure --prefix=/opt/apache2.2.8
 --with-included-apr  
or 
./configure --prefix=/opt/apache2.2.8.


 In both cases configure hangs
after echoing " checking whether SCTP is supported...".  The
process never dies and does not respond to control-c.

The last several lines of output are:
Checking for Networking support...
checking for in_addr in netinet/in.h...
yes
checking if fd == socket on this platform...
yes
checking style of gethostbyname_r routine...
glibc2
checking 3rd argument to the gethostbyname_r
routines... char
checking if TCP_NODELAY setting is inherited
from listening sockets... yes
checking if O_NONBLOCK setting is inherited
from listening sockets... no
checking whether TCP_NODELAY and TCP_CORK
can both be enabled... yes
checking for TCP_CORK in netinet/tcp.h...
yes
checking for TCP_NOPUSH in netinet/tcp.h...
no
checking for SO_ACCEPTFILTER in sys/socket.h...
no
checking whether SCTP is supported...

I googled both sctp and 'configure hangs'
but did not see any suggestions on how to resolve the problem.  Since
this is the first time I've tried to install Apache on this version of
Red Hat I suspect that I need an additional RPM, but I don't know which
one.

Thanks and Regards,
Tony