can't install newlib-1.9.0

[xu]

I can't install newlib-1.9.0.

[root@linux62 newlib-1.9.0]# ./configure --prefix=/opt/newlib
Configuring for a i686-pc-linux-gnu host.
Created "Makefile" in /home/a/newlib-1.9.0 using "mt-frag"
Configuring texinfo...
No configuration information in texinfo
Configuring etc...
loading cache ../config.cache
checking for a BSD compatible install... (cached) /usr/bin/install -c
creating ./config.status
creating Makefile
[root@linux62 newlib-1.9.0]# make
make[1]: Entering directory `/home/a/newlib-1.9.0/etc'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/a/newlib-1.9.0/etc'

However the version of my texinfo is 4.0-5.

How to install it?

Thanks for all.