To install libxaw7 just follow these instructions.
sudo apt-get install libxaw7
Which will install libxaw7 and any other packages on which it depends.
|Maintainer||Debian X Strike Force <firstname.lastname@example.org>|
|Description||X11 Athena Widget library which is largely used by legacy X applications. This version is the most common version, as version 6 is considered deprecated, and version 8, which adds Xprint support, is unsupported and not widely used. In general, use of a more modern toolkit such as GTK+ is recommended.|