Missing Makefile in /lib/modules/2.6.18-128.el5/build

[Yong Huang]

I'm following instruction at
http://h50146.www5.hp.com/products/software/oe/linux/mainstream/support/doc/option/fibre/pdfs/c00169487-2005may.pdf
to install QLogic HBA driver on RHEL 5.3. But running the wrapper script INSTALL or its underlined script build_driver.rh or master.sh or directly run `rpm -ivh hp_qla2x00src-8.02.11-1.linux.noarch.rpm' all throw errors:

[snipped]
Building FC driver modules...

make clean
make: Entering directory `/lib/modules/2.6.18-128.el5/kernel'
make: Leaving directory `/lib/modules/2.6.18-128.el5/kernel'

Make clean failed!

Driver build unsuccessful
[snipped]

Reading build_driver.rh, I notice the make command needs Makefile under /lib/modules/2.6.18-128.el5/build, which is a link to /lib/modules/2.6.18-128.el5/kernel. But that file doesn't exist:

# ls /lib/modules/2.6.18-128.el5/kernel
arch  crypto  drivers  fs  kernel  lib  net  sound

I checked another RHEL 5.3 box. It's the same. (I guess make clean in build_driver.rh can be ignored, but there's a make modules right below it, so hacking build_driver.rh is not a solution.) Thanks for any help.

Yong Huang