Binary package “libxmltok1-dev” in ubuntu bionic

XML Parser Toolkit, developer libraries

 Libraries for XML parsing in C. It aims to be fully conforming. It
 is currently not a validating XML processor.
 .
 The library libxmltok contains a low-level library for tokenizing
 XML. The library libxmlparse contains an XML parser library which is
 built on top of the xmltok library.
 .
 This package contains the development headers.