bug 57282, fixing easy modules like transformiix, r=cls (build stuff)

build/unix/modules.mk

@@ -81,6 +81,7 @@ BM_CVS_NS_necko		= $(BM_CVS_NS_xpcom) intl/locale/idl intl/strres/public modules
 # tranformiix
 #
 BM_DIRS_transformiix	= extensions/transformiix
+BM_CVS_transformiix     = extensions/transformiix
 
 #
 # psm

client.mk

@@ -228,7 +228,9 @@ ifneq ($(BUILD_MODULES),all)
   MOZ_CO_MODULE := $(addprefix mozilla/, $(MOZ_CO_MODULE))
 
   NOSUBDIRS_MODULE := $(addprefix mozilla/, $(BUILD_MODULE_CVS_NS))
+ifneq ($(NOSUBDIRS_MODULE),)
   CVSCO_NOSUBDIRS := $(CVSCO) -l $(CVS_CO_DATE_FLAGS) $(NOSUBDIRS_MODULE)
+endif
 
 ifeq (,$(filter $(NSPRPUB_DIR), $(BUILD_MODULE_CVS)))
   CVSCO_NSPR :=

config/rules.mk

@@ -286,7 +286,7 @@ LOOP_OVER_MOZ_DIRS = \
 
 endif
 
-ifdef EXPORT_DIRS
+ifneq ($(EXPORT_DIRS),)
 LOOP_OVER_EXPORT_DIRS = \
     @$(EXIT_ON_ERROR) \
     for d in $(EXPORT_DIRS); do \