Program builder cleanup, track object file source language - #94, #87

lib/rscons/builders/mixins/program.rb

@@ -0,0 +1,37 @@
+module Rscons
+  module Builders
+    module Mixins
+      # Mixin providing functionality for a builder that links object files
+      # together into a program.
+      module Program
+
+        # Run the builder to produce a build target.
+        def run(options)
+          if @command
+            finalize_command(sources: @objects)
+          else
+            ld = @env.expand_varref("${#{ld_var}}", @vars)
+            if ld == ""
+              @objects.find do |object|
+                if builder = @env.builder_for(object)
+                  if ld = builder.preferred_ld
+                    true
+                  end
+                end
+              end
+            end
+            if ld.nil? || ld == ""
+              ld = default_ld
+            end
+            @vars["_TARGET"] = @target
+            @vars["_SOURCES"] = @objects
+            @vars["#{ld_var}"] = ld
+            command = @env.build_command("${#{ld_var}CMD}", @vars)
+            standard_command("Linking => #{@target}", command, sources: @objects)
+          end
+        end
+
+      end
+    end
+  end
+end