Install libgnustep-base-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libgnustep-base-dev
Description:
GNUstep Base header files and development libraries
This package contains the header files and static libraries required to build applications against the GNUstep Base library. . Install this package if you wish to develop your own programs using the GNUstep Base Library.
Homepage: http://gnustep.org
Version: 1.25.1-2ubuntu3
Section: universe/libdevel