Error mesgs

[quote]Everybody can post the error mesgs that they get during using asterisk[/quote][/b]

I’m installing asterisk in my Dell DHM system on the fedora core 6 platform.
I’m getting this error mesg.

[quote] [b][root@dialer zaptel-1.2.16]#make
grep: /lib/modules/2.6.18-1.2798.fc6/build/include/linux/autoconf.h: No such file or directory
Makefile:211: target `ztdummy.o’ given more than once in the same rule.

You do not appear to have the sources for the 2.6.18-1.2798.fc6 kernel installed.
make: *** [all] Error 1
[root@dialer zaptel-1.2.16]#[/b][/quote]

Can anyone help me on this topic ?