Fix Makefile. Use Python 3 for scripts.

Makefile

@@ -1,22 +1,29 @@
-ALL_FOLDERS := ${shell find ./src/ -mindepth 1 -maxdepth 1 -type d -print0 | xargs -0}
-#ALL_FOLDERS := $(dir $(wildcard ./src/*/.))
-
-#ALL_TARGETS = $(ALL_FOLDERS:./src/%=build/%.mkp)
+SRC_DIR := src/
+ALL_FOLDERS := $(shell find $(SRC_DIR) -mindepth 1 -maxdepth 1 -type d -print0 | xargs -0)
+ALL_MODULES := $(sort $(subst $(SRC_DIR),,$(ALL_FOLDERS)))
 ALL_TARGETS := ${shell bin/findtargets.py build/ $(ALL_FOLDERS)}
 
 all: $(ALL_TARGETS)
 
-
-$(ALL_TARGETS): $(ALL_FOLDERS)
-	@echo "Building $@ from $<"
-	bin/makemkp.py $< ./build/
-
-
 # cleanup
 
 .PHONY: clean show_targets
 clean:
 	-rm ./build/*.mkp
 
+# debug
+
 show_targets:
+	@echo $(ALL_FOLDERS)
 	@echo $(ALL_TARGETS)
+	@echo $(ALL_MODULES)
+
+# setup
+
+define make-goal
+${shell bin/findtargets.py build/ $(SRC_DIR)$1}: $(SRC_DIR)$1
+	echo "Building $$@"
+	bin/makemkp.py $$< ./build/
+endef
+
+$(foreach mod,$(ALL_MODULES),$(eval $(call make-goal,$(mod))))