Nuke task to build standalone "tool" executables

gistfile1.nu

;; use this to create all the linking and assembly tasks to build a standalone "tool" executable
(macro tool-tasks
     (unless (and @arch (@arch length))
             (set @arch (list (NSString stringWithShellCommand:"arch"))))
     
     (unless @tool_extras
             (set @tool_extras ""))
     
     ;; executable architecture-specific executable
     (set @tool_executables (NSMutableArray array))
     (@arch each:
            (do (architecture)
                (set tool_executable "build/#{architecture}/#{@tool}")
                (@tool_executables addObject:tool_executable)
                (file tool_executable => (@c_objects objectForKey:architecture) (@m_objects objectForKey:architecture) is
                      (set command "gcc #{((@c_objects objectForKey:architecture) join)} #{((@m_objects objectForKey:architecture) join)} #{@tool_extras} #{@ldflags} -o '#{(target name)}'")
                      (SH command))))
     
     ;; tool fat archive
     (set @tool_executable_name "#{@tool}")
     (file @tool_executable_name => @tool_executables is
           (if (> (@tool_executables count) 1)
               (then (set command "lipo -create #{(@tool_executables join)} -output '#{@tool_executable_name}'"))
               (else (set command "cp '#{(@tool_executables objectAtIndex:0)}' '#{@tool_executable_name}'")))
           (SH command))
     
     (task "tool" => @tool_executable_name))