> On 31 May 2020, at 20:52, Patrick Cardona via Discussion list for the GNUstep > programming environment <discuss-gnustep@gnu.org> wrote: > > Hi All experienced Objective-C Dev > > I begun this Beginner Guide about Objective C : > > http://gnustep.made-it.com/BG-objc/ > > But my beginning is not glorious... > > pi@raspberrypi:~/CoursObjectiveC $ ls > hello hello.m > pi@raspberrypi:~/CoursObjectiveC $ gcc -lobjc hello.m -o hello > hello.m: In function ‘main’: > hello.m:39:2: warning: ‘Greeter’ may not respond to ‘+new’ > myGreeter=[Greeter new]; > ^~~~~~~~~ > hello.m:39:2: warning: (Messages without a matching method signature > hello.m:39:2: warning: will be assumed to return ‘id’ and accept > hello.m:39:2: warning: ‘...’ as arguments.) > hello.m:43:2: warning: no ‘-free’ method found > [myGreeter free]; > ^ > pi@raspberrypi:~/CoursObjectiveC $ ./hello > Erreur de segmentation > > Is this Beginner's Guide up to date ? It's old, but probably still OK. You could also try the guide that comes with GNUstep-base; you should already have it on your system, but can also find it online at http://www.gnustep.org/resources/documentation/Developer/Base/ProgrammingManual/manual_1.html
