In order to build DragonFly on FreeBSD 4.8 you need to do things a little backwards from the way you would normally do them. I’ll show you how it needs to be done nowadays:

First, cvsup as above then;

rm -rf /usr/include && mkdir /usr/include
cd /usr/src && make installincludes

make buildworld
make installworld
make upgrade
make buildkernel
make installkernel
reboot

Explanation:

In order to prevent old 4.8 files from messing with the DragonFly build, the ‘/usr/include’ directory must be cleared of all the old 4.8 ‘.h’ files.

The version of ‘config’ that ships with 4.8 will not work with the modern DragonFly kernel source, and so you must ‘make buildworld’ and ‘make installworld’ beofore the DragonFly kernel will compile.

Just remember to *NOT* reboot until the DragonFly kernel is installed, or else you’ll end up with an unbootable system.

The ‘make upgrade’ after the ‘make installworld’ is needed to update the ‘/etc’ and other assorted files needed to boot the system. Skipping this step isn’t advisable due to the inclusion of the new RCng and GCC3.