Install libapr1-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libapr1-dev
Description:
Apache Portable Runtime Library - Development Headers
APR is Apache's Portable Runtime Library, designed to be a support library that provides a predictable and consistent interface to underlying platform-specific implementations. . This package contains development headers for APR.
Homepage: http://apr.apache.org/
Version: 1.6.3-2
Section: libdevel