env.depends should imply env.build_after - close #40

build_tests/simple/user_dep_build_order.rb

@@ -0,0 +1,22 @@
+class TestBuilder < Rscons::Builder
+  def run(options)
+    target, env, vars, cache = options.values_at(:target, :env, :vars, :cache)
+    if target == "two"
+      return false unless File.exists?("one")
+    end
+    wait_time = env.expand_varref("${wait_time}", vars)
+    command = ["ruby", "-e", "require 'fileutils'; sleep #{wait_time}; FileUtils.touch('#{target}');"]
+    standard_threaded_build("TestBuilder", target, command, [], env, cache)
+  end
+
+  def finalize(options)
+    standard_finalize(options)
+  end
+end
+
+Rscons::Environment.new do |env|
+  env.add_builder(TestBuilder.new)
+  env.TestBuilder("one", [], "wait_time" => "3")
+  env.TestBuilder("two", [], "wait_time" => "0")
+  env.depends("two", "one")
+end