gst-build 1.14 on Ubuntu 16.04 isn't working for me

[carl hansen]

> |Program g-ir-scanner found: NO
> |Program glib-mkenums found: NO
>
> subprojects/gstreamer/meson.build:421:0: ERROR:  Program(s) ['glib-mkenums'] not found or not executable
>
>
> Any idea how to get past this one?  (I have never used Meson before.)
>

 https://www.debian.org/distrib/packages#search_packages

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Keyword :  g-ir-scanner

File Packages /usr/bin/g-ir-scanner gobject-introspection

apt install gobject-introspection

etc