[xdebug-general] phpize error

I want to install xdebug from source code.
When I run phpize I get this error:

configure.in:65: error: possibly undefined macro: AC_PROG_LIBTOOL
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.

I am using Red Hat 9.0 with these packages:
autoconf-2.57-3
automake-1.6.3-5
libtool-libs-1.4.3-5
bison-1.35-6
flex-2.5.4a-29
Received on Mon Oct 18 2004 - 13:29:00 BST