libgnatvsn4.9-dev 4.9.3-3ubuntu5 (amd64 binary) in ubuntu xenial

 GNAT is a compiler for the Ada programming language. It produces optimized
 code on platforms supported by the GNU Compiler Collection (GCC).
 .
 The libgnatvsn library exports selected GNAT components for use in other
 packages, most notably ASIS tools. It is licensed under the GNAT-Modified
 GPL, allowing to link proprietary programs with it.
 .
 This package contains the development files and static library.