How to build libtool from git sources properly?

[Igor Zhbanov]

Hi!

How to properly build libtool from git sources.

I see too many differences between

git clone git://git.savannah.gnu.org/libtool.git
git checkout v2.4.6

and

http://ftpmirror.gnu.org/libtool/libtool-2.4.6.tar.gz.

How to make cloned sources to look like in release archive?
Didn't find any instruction.

Thank you.