move default builder classes into Rscons::Builders namespace module

lib/rscons/builders/program.rb

@@ -1,39 +1,41 @@
 module Rscons
-  # A default RScons builder that knows how to link object files into an
-  # executable program.
-  class Program < Builder
-    def default_variables(env)
-      {
-        'LD' => nil,
-        'OBJSUFFIX' => '.o',
-        'LIBSUFFIX' => '.a',
-        'LDFLAGS' => [],
-        'LIBPATH' => [],
-        'LIBS' => [],
-        'LDCMD' => ['${LD}', '-o', '${_TARGET}', '${LDFLAGS}', '${_SOURCES}', '-L${LIBPATH}', '-l${LIBS}']
-      }
-    end
+  module Builders
+    # A default RScons builder that knows how to link object files into an
+    # executable program.
+    class Rscons::Builders::Program < Rscons::Builder
+      def default_variables(env)
+        {
+          'LD' => nil,
+          'OBJSUFFIX' => '.o',
+          'LIBSUFFIX' => '.a',
+          'LDFLAGS' => [],
+          'LIBPATH' => [],
+          'LIBS' => [],
+          'LDCMD' => ['${LD}', '-o', '${_TARGET}', '${LDFLAGS}', '${_SOURCES}', '-L${LIBPATH}', '-l${LIBS}']
+        }
+      end
 
-    def run(target, sources, cache, env, vars)
-      # build sources to linkable objects
-      objects = env.build_sources(sources, [env['OBJSUFFIX'], env['LIBSUFFIX']].flatten, cache, vars)
-      return false unless objects
-      ld = if env["LD"]
-             env["LD"]
-           elsif sources.find {|s| s.has_suffix?(env["DSUFFIX"])}
-             env["DC"]
-           elsif sources.find {|s| s.has_suffix?(env["CXXSUFFIX"])}
-             env["CXX"]
-           else
-             env["CC"]
-           end
-      vars = vars.merge({
-        '_TARGET' => target,
-        '_SOURCES' => objects,
-        'LD' => ld,
-      })
-      command = env.build_command(env['LDCMD'], vars)
-      standard_build("LD #{target}", target, command, objects, env, cache)
+      def run(target, sources, cache, env, vars)
+        # build sources to linkable objects
+        objects = env.build_sources(sources, [env['OBJSUFFIX'], env['LIBSUFFIX']].flatten, cache, vars)
+        return false unless objects
+        ld = if env["LD"]
+               env["LD"]
+             elsif sources.find {|s| s.has_suffix?(env["DSUFFIX"])}
+               env["DC"]
+             elsif sources.find {|s| s.has_suffix?(env["CXXSUFFIX"])}
+               env["CXX"]
+             else
+               env["CC"]
+             end
+        vars = vars.merge({
+          '_TARGET' => target,
+          '_SOURCES' => objects,
+          'LD' => ld,
+        })
+        command = env.build_command(env['LDCMD'], vars)
+        standard_build("LD #{target}", target, command, objects, env, cache)
+      end
     end
   end
 end