abstract project Shared is
   for Source_Files use (); --  no source files!
   for Source_Dirs use (".", "stubs");
   for Object_Dir use "build";
   for Exec_Dir use "build";

   package Compiler is
   for Default_Switches("ada") use
           ("-g", "-gnateS", "-ftest-coverage",
           "-gnatv", "-gnatf", "-gnatyabcefhiklmnprst",
           "-gnat12");
   end Compiler;
end Shared;