remove Builder.features and Builder.produces?

lib/rscons/builders/library.rb

@@ -7,8 +7,13 @@ module Rscons
       def initialize(options)
         super(options)
         suffixes = @env.expand_varref(["${OBJSUFFIX}", "${LIBSUFFIX}"], @vars)
-        # Register builders to build each source to an object file or library.
-        @objects = @env.register_builds(@target, @sources, suffixes, @vars)
+        @objects = @sources.map do |source|
+          if source.end_with?(*suffixes)
+            source
+          else
+            @env.register_dependency_build(@target, source, suffixes.first, @vars, Object)
+          end
+        end
       end
 
       # Run the builder to produce a build target.

lib/rscons/builders/object.rb

@@ -12,28 +12,6 @@ module Rscons
         "DC" => "DSUFFIX",
       }
 
-      class << self
-        # Return whether this builder object is capable of producing a given target
-        # file name from a given source file name.
-        #
-        # @param target [String]
-        #   The target file name.
-        # @param source [String]
-        #   The source file name.
-        # @param env [Environment]
-        #   The Environment.
-        #
-        # @return [Boolean]
-        #   Whether this builder object is capable of producing a given target
-        #   file name from a given source file name.
-        def produces?(target, source, env)
-          target.end_with?(*env['OBJSUFFIX']) and
-            KNOWN_SUFFIXES.find do |compiler, suffix_var|
-              source.end_with?(*env[suffix_var])
-            end
-        end
-      end
-
       # Run the builder to produce a build target.
       def run(options)
         if @command

lib/rscons/builders/program.rb

@@ -22,8 +22,13 @@ module Rscons
           @target += @env.expand_varref("${PROGSUFFIX}", @vars)
         end
         suffixes = @env.expand_varref(["${OBJSUFFIX}", "${LIBSUFFIX}"], @vars)
-        # Register builders to build each source to an object file or library.
-        @objects = @env.register_builds(@target, @sources, suffixes, @vars)
+        @objects = @sources.map do |source|
+          if source.end_with?(*suffixes)
+            source
+          else
+            @env.register_dependency_build(@target, source, suffixes.first, @vars, Object)
+          end
+        end
       end
 
       # Run the builder to produce a build target.

lib/rscons/builders/shared_library.rb

@@ -4,16 +4,6 @@ module Rscons
     # shared library.
     class SharedLibrary < Builder
 
-      class << self
-        # Return a set of build features that this builder provides.
-        #
-        # @return [Array<String>]
-        #   Set of build features that this builder provides.
-        def features
-          %w[shared]
-        end
-      end
-
       # Create an instance of the Builder to build a target.
       def initialize(options)
         super(options)
@@ -25,9 +15,13 @@ module Rscons
           @target += @env.expand_varref("${SHLIBSUFFIX}", @vars)
         end
         suffixes = @env.expand_varref(["${OBJSUFFIX}", "${LIBSUFFIX}"], @vars)
-        # Register builders to build each source to an object file or library.
-        @objects = @env.register_builds(@target, @sources, suffixes, @vars,
-                                        features: %w[shared])
+        @objects = @sources.map do |source|
+          if source.end_with?(*suffixes)
+            source
+          else
+            @env.register_dependency_build(@target, source, suffixes.first, @vars, SharedObject)
+          end
+        end
       end
 
       # Run the builder to produce a build target.

lib/rscons/builders/shared_object.rb

@@ -13,36 +13,6 @@ module Rscons
         "SHDC" => "DSUFFIX",
       }
 
-      class << self
-        # Return a set of build features that this builder provides.
-        #
-        # @return [Array<String>]
-        #   Set of build features that this builder provides.
-        def features
-          %w[shared]
-        end
-
-        # Return whether this builder object is capable of producing a given target
-        # file name from a given source file name.
-        #
-        # @param target [String]
-        #   The target file name.
-        # @param source [String]
-        #   The source file name.
-        # @param env [Environment]
-        #   The Environment.
-        #
-        # @return [Boolean]
-        #   Whether this builder object is capable of producing a given target
-        #   file name from a given source file name.
-        def produces?(target, source, env)
-          target.end_with?(*env['OBJSUFFIX']) and
-            KNOWN_SUFFIXES.find do |compiler, suffix_var|
-              source.end_with?(*env[suffix_var])
-            end
-        end
-      end
-
       # Run the builder to produce a build target.
       def run(options)
         if @command