[asterisk-users] Invalid use of undefined type when make dahdi

[CB]

I am attempting to install Dahdi on a virtual machine running Centos 5.5 and having various problems.

yum install kernel-devel gcc make gcc-c++ libxml2-devel
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* base: mirror.optus.net
* extras: mirror.optus.net
* rpmforge: fr2.rpmfind.net
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Setting up Install Process
Package kernel-devel-2.6.18-238.9.1.el5.x86_64 already installed and
latest version
Package gcc-4.1.2-50.el5.x86_64 already installed and latest version
Package 1:make-3.81-3.el5.x86_64 already installed and latest version
Package gcc-c++-4.1.2-50.el5.x86_64 already installed and latest version
Package libxml2-devel-2.6.26-2.1.2.8.el5_5.1.x86_64 already installed
and latest version
Package libxml2-devel-2.6.26-2.1.2.8.el5_5.1.i386 already installed and
latest version
Nothing to do

[root at atlantis dahdi-linux-2.4.1.2]# make
make -C drivers/dahdi/firmware firmware-loaders
make[1]: Entering directory
`/usr/src/dahdi-linux-2.4.1.2/drivers/dahdi/firmware'
make[1]: Leaving directory
`/usr/src/dahdi-linux-2.4.1.2/drivers/dahdi/firmware'
You do not appear to have the sources for the 2.6.18-238.el5 kernel
installed.

So we're running a different kernel...

uname -r
2.6.18-238.el5

Downloaded kernel sources for 2.6.18-238.el5

[user at atlantis ~]$ mkdir -p ~/rpmbuild/{BUILD,RPMS,SOURCES,SPECS,SRPMS}
[user at atlantis ~]$ echo '%_topdir %(echo $HOME)/rpmbuild' >
~/.rpmmacros
[user at atlantis ~]$cd ~/rpmbuild/SPECS
[user at atlantis ~]$rpmbuild -bp --target=`uname -m` kernel-2.6.spec
2> prep-err.log | tee prep-out.log

[root at atlantis kernel-2.6.18]# cp
/home/user/rpmbuild/BUILD/kernel-2.6.18/linux-2.6.18.x86_64
/usr/src/kernels/2.6.18-238.el5-x86_64 -R

[root at atlantis dahdi-linux-complete-2.4.1.2+2.4.1]# make all

/usr/src/dahdi-linux-complete-2.4.1.2+2.4.1/linux/drivers/dahdi/dahdi-base.c:8652:
error: invalid use of undefined type ‘struct module’
/usr/src/dahdi-linux-complete-2.4.1.2+2.4.1/linux/drivers/dahdi/dahdi-base.c:8652:
error: ‘struct dahdi_chan’ has no member named ‘pulsecount’
etc etc

This article (http://asteriskfaqs.org/2011/01/30/asterisk-users/invalid-use-of-undefined-type-struct-module.html) indicates that those errors are the result of not having CONFIG_MODULES set in the kernel config. 

cd /home/user/rpmbuild/BUILD/kernel-2.6.18/linux-2.6.18.x86_64
make menuconfig
[*] Enable loadable module support

Legend: [*] built-in

Any advice appreciated.