diff --git a/make/lo.mk b/make/lo.mk
index 4c8fbbcb..695f5dd1 100644
--- a/make/lo.mk
+++ b/make/lo.mk
@@ -1,11 +1,12 @@
-# === change this >
+# === pre-define these >
 TOOLS_DIR                   ?= $(TOPDIR)/tools
 TOOLS_INCLUDE_DIR           ?= $(TOOLS_DIR)
 CPP_PREFIX                  ?= YLo
 CPP_SUFFIX                  ?=
 SO_PREFIX                   ?= lo_
 LOADABLE_OBJ_HOOK           ?= LOADABLE_OBJECT_HOOK
-# === change this <
+LOADABLE_OBJ_IGNORE         ?=
+# === pre-define these <
 
 include $(JWBDIR)/make/defs.mk
 include $(JWBDIR)/make/defs-cpp.mk
@@ -19,22 +20,23 @@ LOADABLE_OBJS                = $(filter-out $(LOADABLE_OBJ_IGNORE),$(LOADABLE_OB
 LOADABLE_OBJ_CPP             = $(patsubst %,%.cpp,$(LOADABLE_OBJS))
 LOADABLE_OBJS_O              = $(patsubst %,%.o,$(LOADABLE_OBJS))
 
-OTHER_CPP_IGNORE             = $(patsubst %,$(CPP_PREFIX)%.cpp,$(LOADABLE_OBJ_IGNORE))
+OTHER_CPP_IGNORE            += $(patsubst %,$(CPP_PREFIX)%.cpp,$(LOADABLE_OBJ_IGNORE)) $(patsubst %,%.cpp,$(LOADABLE_OBJ_IGNORE))
+SRC_ALL_CPP_IGNORE          += $(OTHER_CPP_IGNORE)
 OTHER_CPP                   ?= $(filter-out $(LOADABLE_OBJ_CPP) $(OTHER_CPP_IGNORE),$(wildcard *.cpp))
 ifneq ($(OTHER_CPP),)
-OTHER_O                      = $(patsubst %.cpp,%.o,$(OTHER_CPP))
-OTHER_LIB                    = liblocal.a
-OTHER_LIB_LDFLAGS            = -L. -llocal
-OTHER_MEMBERS_O              = $(OTHER_LIB)($(OTHER_O))
+  OTHER_O                    = $(patsubst %.cpp,%.o,$(OTHER_CPP))
+  OTHER_LIB                  = liblocal.a
+  OTHER_LIB_LDFLAGS          = -L. -llocal
+  OTHER_MEMBERS_O            = $(OTHER_LIB)($(OTHER_O))
 endif
 
 ifneq ($(TARGET),mingw)
-LOADABLE_OBJ_LIBS            = $(addprefix $(SO_PREFIX), $(addsuffix .so, $(LOADABLE_OBJS)))
+  LOADABLE_OBJ_LIBS          = $(addprefix $(SO_PREFIX), $(addsuffix .so, $(LOADABLE_OBJS)))
 else
-LOADABLE_OBJ_LIBS            = $(addprefix $(SO_PREFIX), $(addsuffix .dll, $(LOADABLE_OBJS)))
+  LOADABLE_OBJ_LIBS          = $(addprefix $(SO_PREFIX), $(addsuffix .dll, $(LOADABLE_OBJS)))
 endif
-BUILD_LOADABLE_OBJ_LIBS      = $(addprefix $(BUILD_LIBDIR)/, $(LOADABLE_OBJ_LIBS))
-INSTALLED_LOADABLE_OBJ_LIBS  = $(addprefix $(INSTALL_LIBDIR)/, $(LOADABLE_OBJ_LIBS))
+BUILD_LOADABLE_OBJ_LIBS      = $(addprefix $(BUILD_LIBDIR)/,$(LOADABLE_OBJ_LIBS))
+INSTALLED_LOADABLE_OBJ_LIBS  = $(addprefix $(INSTALL_LIBDIR)/,$(LOADABLE_OBJ_LIBS))
 
 all: $(LOADABLE_OBJ_LIBS) $(BUILD_LOADABLE_OBJ_LIBS)
 install: $(INSTALLED_LOADABLE_OBJ_LIBS)