make the cmock modifier files optional as 2nd argument in config

examples/temp_sensor/rakefile.rb

@@ -39,8 +39,8 @@ task :ci => [:default]
 task :cruise => [:default]
 
 desc 'Load configuration'
-task :config, :config_file do |_t, args|
-  configure_toolchain(args[:config_file])
+task :config, [:config_file, :cmock_overlay] do |_t, args|
+  configure_toolchain(args[:config_file], args[:cmock_overlay])
 end
 
 desc 'Return error on Failures'

examples/temp_sensor/rakefile_helper.rb

@@ -35,7 +35,7 @@ module RakefileHelpers
     nil
   end
 
-  def load_configuration(config_file)
+  def load_configuration(config_file, cmock_overlay = nil)
     $cfg_file = config_file
     $proj = load_yaml(File.read('./project.yml'))
 
@@ -46,7 +46,7 @@ module RakefileHelpers
       puts "Loading Unity target:  #{unity_target}"
       $unity_cfg = load_yaml(File.read(unity_target))
 
-      cmock_file = find_cmock_target(cmock_targets_dir, $cfg_file)
+      cmock_file = cmock_overlay || find_cmock_target(cmock_targets_dir, $cfg_file)
       if cmock_file
         puts "Loading CMock overlay: #{cmock_targets_dir}/#{cmock_file}"
         $cmock_cfg = load_yaml(File.read("#{cmock_targets_dir}/#{cmock_file}"))
@@ -67,9 +67,11 @@ module RakefileHelpers
     CLEAN.include("#{$proj[:project][:build_root]}*.*")
   end
 
-  def configure_toolchain(config_file = DEFAULT_CONFIG_FILE)
-    config_file += '.yml' unless config_file =~ /\.yml$/
-    load_configuration(config_file)
+  def configure_toolchain(config_file = DEFAULT_CONFIG_FILE, cmock_overlay = nil)
+    config_file ||= DEFAULT_CONFIG_FILE
+    config_file += '.yml' unless config_file =~ /\.yml$/i
+    cmock_overlay += '.yml' if cmock_overlay && cmock_overlay !~ /\.yml$/i
+    load_configuration(config_file, cmock_overlay)
     configure_clean
   end