paradise:~/devel/misc% cat hello.adb
with Ada.Text_IO;

procedure Hello is
begin
   Ada.Text_IO.Put_Line("Hello, world!");
end Hello;
paradise:~/devel/misc% PATH=/opt/gcc412/bin:$PATH gnatmake hello.adb
gcc -c hello.adb
gnatbind -x hello.ali
gnatlink hello.ali
paradise:~/devel/misc% ./hello
Hello, world!
paradise:~/devel/misc%