libtool-doc 2.4.6-2.1 (amd64 binary) in ubuntu cosmic

 This package contains the GNU libtool documentation.
 .
 GNU libtool is generic library support script. Libtool hides
 the complexity of generating special library types (such as shared
 libraries) behind a consistent interface. To use libtool, add the
 new generic library building commands to your Makefile, Makefile.in,
 or Makefile.am. See the documentation for details. Libtool supports
 building static libraries on all platforms.