Binary package “libqwt-qt5-dev” in ubuntu eoan

Qt widgets library for technical applications (development, qt5)

 The Qwt library contains Qt GUI Components and utility classes which
 are primarily useful for programs with a technical background. Most of
 these widgets are used to control or display values, arrays, or ranges
 of type double.
 .
 This package contains the Qwt development files for Qt5.