start on Builder/Environment/CC/Program

lib/rscons/builders/cc.rb

@@ -0,0 +1,10 @@
+module Rscons
+  class CC < Builder
+    VARIABLE_DEFAULTS = {
+      'CC' => 'gcc',
+      'CFLAGS' => [],
+      'CPPFLAGS' => [],
+      'OBJSUFFIX' => '.o',
+    }
+  end
+end

lib/rscons/builders/program.rb

@@ -0,0 +1,11 @@
+module Rscons
+  class Program < Builder
+    VARIABLE_DEFAULTS = {
+      'LD' => nil,
+      'OBJSUFFIX' => '.o',
+      'LIBSUFFIX' => '.a',
+      'LDFLAGS' => [],
+      'LIBS' => [],
+    }
+  end
+end