libclaw-dev 1.7.4-2build1 (amd64 binary) in ubuntu focal

 Claw is a C++ Library Absolutely Wonderful bringing various nice
 classes and tools to C++ developers.
 .
 This library tries to be standard compliant and as portable as possible.
 .
 Claw provides:
  - tweener classes for easy interpolation,
  - advanced data structures: automaton, AVL binary search tree,
 graph, tree, ordered set, trie, maps with multiple types as keys,
  - geometric tools (2D): box/rectangle, point, line, vector,
  - image manipulation, reading and writing bitmap, jpeg, targa, png, pcx, xpm
 files
  - network tools: use sockets like any standard stream,
  - text algorithms,
  - min-max/alpha-beta algorithms,
  - developer tools: generic singleton, smart pointers,
 meta-programming concepts, buffered streams,
  - easy read of conf/ini files, easy access to environment variables,
  - manipulation of dynamic libraries,
  - and a lot more...