Xaw95 https://sourceforge.net/projects/sf-xpaint/files/sf-xpaint/x... You don't need to install it globally, an LD_PRELOAD env var pointing to ./libXaw95.so.8.0 will do the trick.
Usage:
xmkmf -a
make
Test: export LD_PRELOAD=./libXaw95.so.8.0
xcalc
For anyone following this thread, that link goes to a download itself rather than a page where you choose whether or not to download.