libgnustep-gui-dev 0.26.2-3 (s390x binary) in ubuntu cosmic

 The GNUstep GUI Library is a powerful library of graphical user interface
 classes written completely in the Objective-C language; the classes are
 based upon the OpenStep specification, and provide the user with a
 traditional nextstep-like look and feel.
 .
 This package contains the header files and static libraries required
 to build applications against the GNUstep GUI library.
 .
 Install this package if you wish to develop your own programs using
 the GNUstep GUI Library.