save

lib/make.rb

@@ -56,7 +56,9 @@ module Make
             @steps = makefile["steps"] || []
 
             @environment = ENV.to_h.merge(
-                "PREFIX" => get_prefix
+                "PREFIX" => get_prefix,
+                "CPUS" => System.cpus.to_s,
+                "SUDO" => (@target == :user ? "" : "sudo")
             )
 
             environment = makefile["environment"]
@@ -69,13 +71,22 @@ module Make
         end
 
         def get_prefix
+            sys_prefix = case System.os_name
+            when :macos
+                "/usr"
+            else
+                ""
+            end
+
             case @target
             when :user
                 "#{ENV["HOME"]}/.local"
             when :package
-                "/pkg/#{@name}/#{@repository.branch}"
+                "#{sys_prefix}/pkg/#{@name}/#{@repository.branch}"
             when :system
-                "/"
+                "#{sys_prefix}/"
+            else
+                raise "Unknown target: #{@target.inspect}"
             end
         end