[webkit-help] Error in running ./autogen.sh on linux

[hap 497]

Hi,

I have download Webkit source and tried to compile it under ubuntu 8.04.
And I am following this  https://trac.webkit.org/wiki/BuildingGtk to build,

But I get this error:
$ ./autogen.sh --enable-debug
configure.ac:41: option `tar-ustar' not recognized

Can you please tell me how to fix it?

Thank you.