For installation instructions see the Section called Installing Libtool-1.5 in Chapter 6.
Libtool (1.5):
ftp://ftp.gnu.org/gnu/libtool/
GNU libtool is a generic library support script. Libtool hides the complexity of using shared libraries behind a consistent, portable interface.
Installed programs: libtool and libtoolize
Installed libraries: libltdl.[a,so].
libtool provides generalized library-building support services.
libtoolize provides a standard way to add libtool support to a package.
libltdl hides the various difficulties of dlopening libraries.
Libtool depends on: Bash, Binutils, Coreutils, Diffutils, GCC, Glibc, Grep, Make, Sed.