Lua conditional get xxx value by name for vw121 (#5439)

* VW121 config: better way to say EFI_LUA_LOOKUP=FALSE

* Conditional compilation of getOutputValueByName getConfigValueByName #5434

firmware/config/boards/hellen/hellen121vag/board.mk

@@ -14,7 +14,10 @@ DDEFS += -DFIRMWARE_ID=\"hellen121vag\" $(VAR_DEF_ENGINE_TYPE)
 DDEFS += -DEFI_SOFTWARE_KNOCK=TRUE -DSTM32_ADC_USE_ADC3=TRUE
 
 # Use less Flash memory for this config
-DDEFS += -DEFI_LUA_LOOKUP=FALSE
+ifeq ($(EFI_LUA_LOOKUP),)
+  EFI_LUA_LOOKUP = FALSE
+endif
+DDEFS += -DEFI_LUA_LOOKUP=$(EFI_LUA_LOOKUP)
 
 DDEFS += -DSHORT_BOARD_NAME=hellen121vag
 

firmware/controllers/lua/lua.mk

@@ -6,10 +6,17 @@ ALLCPPSRC += $(LUA_DIR)/lua.cpp \
 			 $(LUA_DIR)/can_filter.cpp \
 			 $(LUA_DIR)/lua_hooks_util.cpp \
 			 $(LUA_DIR)/script_impl.cpp \
-			 $(LUA_DIR)/generated/output_lookup_generated.cpp \
-			 $(LUA_DIR)/generated/value_lookup_generated.cpp \
 			 $(LUA_DIR)/lua_can_rx.cpp \
 
+ifeq ($(EFI_LUA_LOOKUP), FALSE)
+  ALLCPPSRC += $(LUA_DIR)/value_lookup_stubs.cpp \
+
+else
+  ALLCPPSRC += $(LUA_DIR)/generated/output_lookup_generated.cpp \
+			   $(LUA_DIR)/generated/value_lookup_generated.cpp \
+
+endif
+
 ALLINC += $(LUA_DIR) $(LUA_DIR)/luaaa $(LUA_EXT)
 ALLCSRC += \
 	$(LUA_EXT)/lapi.c \

firmware/controllers/lua/value_lookup_stubs.cpp

@@ -0,0 +1,23 @@
+/**
+ * @file value_lookup_stubs.cpp
+ * @brief These stubs are used to reduce the Flash amount used for some configs
+ *
+ * @date Jul 23, 2023
+ * @author andreika <prometheus.pcb@gmail.com>
+ * @author Andrey Belomutskiy, (c) 2012-2020
+ */
+
+#include "pch.h"
+#include "value_lookup.h"
+
+float getOutputValueByName(const char * /*name*/) {
+	return EFI_ERROR_CODE;
+}
+
+float getConfigValueByName(const char * /*name*/) {
+	return EFI_ERROR_CODE;
+}
+
+bool setConfigValueByName(const char * /*name*/, float /*value*/) {
+	return false;
+}