Install libflxmlrpc-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libflxmlrpc-dev
Description:
fldigi suite XmlRpc library - Development files
This package contains libflxmlrpc -- an customized implementation of the XmlRpc protocol -- used by fldigi, flrig, flnet, flmsg, flarq, flamp, fllog; a suite of programs written for amateur radio emergency communications.
Homepage: http://www.w1hkj.com/downloads/flxmlrpc/
Version: 0.1.4-1ubuntu1
Section: universe/libdevel