Lephe' does Makefile magics.

Makefile

@@ -65,7 +65,7 @@ BIN_CG := $(ELF_CG:.elf=.bin)
 src       := $(wildcard src/*.[csS] \
                         src/*/*.[csS] \
                         src/*/*/*.[csS] \
-                        src/*/*/*/*.[csS])
+                        src/*/*/*/*.[csS] \) src/gen_levels.c
 assets-fx := $(wildcard assets-fx/*/*)
 assets-cg := $(wildcard assets-cg/*/*)
 
@@ -76,8 +76,8 @@ obj-cg  := $(src:%=build-cg/%.o) \
            $(assets-cg:assets-cg/%=build-cg/assets/%.o)
 
 # Additional dependencies
-deps-fx := $(ICON_FX)
-deps-cg := $(ICON_CG_UNS) $(ICON_CG_SEL)
+deps-fx := $(ICON_FX) src/gen_levels.c
+deps-cg := $(ICON_CG_UNS) $(ICON_CG_SEL) src/gen_levels.c
 
 # All targets
 all :=
@@ -92,6 +92,9 @@ endif
 #  Build rules
 #
 
+levels/level_%.lua: levels/level_%.tmx
+	tiled --export-map $< $@
+
 all: $(all)
 
 all-fx: $(TARGET_FX)
@@ -157,6 +160,15 @@ build-cg/assets/bin/%.o: assets-cg/bin/%
 	@ mkdir -p $(dir $@)
 	fxconv -b $< -o $@ $(FXCONVCG) name:bin_$(basename $*) $(BIN.$*)
 
+levels/level_%.lua: levels/level_%.tmx
+	tiled --export-map $< $@
+
+levels_tmx := $(wildcard levels/level_*.tmx)
+levels_lua := $(levels_tmx:tmx=lua)
+
+src/gen_levels.c: $(levels_lua)
+	./make_levels.sh
+
 #
 #  Cleaning and utilities
 #