The classic first application "Hello World" by FLTK.
To build this project, open "Terminal" and type following lines:
mkdir build && cd build
cmake ..
start Hello_World_Fltk.sln
Select Hello_World_Fltk project and type Ctrl+F5 to build and run it.
mkdir build && cd build
cmake .. -G "Xcode"
open ./Hello_World_Fltk.xcodeproj
Select Hello_World_Fltk project and type Cmd+R to build and run it.
mkdir build && cd build
cmake ..
cmake --build . --config Debug
./Hello_World_Fltk