Fixed makefiles calls.

Makefile

@@ -4,11 +4,13 @@ SHELL = /usr/bin/env bash
 
 ROOT := $(realpath $(dir $(lastword $(MAKEFILE_LIST))))
 
+ifeq ($(filter clean-all,$(MAKECMDGOALS)),)
 ifneq ($(realpath $(ROOT)/config.mk), $(ROOT)/config.mk)
-$(error ERROR: Please run the configure script before building.)
+$(error ERROR: Please run the configure script before building)
 endif
 
 include $(ROOT)/config.mk
+endif
 
 #
 # User settings
@@ -65,14 +67,19 @@ RESET  := \033[m
 # Default targets
 all: $(OUTPUT) $(ASSET_OUTPUT)
 
-$(OUTPUT):
+$(OUTPUT): FORCE
 	$(Q)cd $(SOURCE_DIR) && $(MAKE) $@
 
-$(ASSET_OUTPUT):
+$(ASSET_OUTPUT): FORCE
 	$(Q)cd $(ASSETS_DIR) && $(MAKE) $@
 
-.PHONY: clean run print-var-%
+FORCE:
+
+.PHONY: clean clean-all run print-var-%
 clean:
+	$(Q)rm -rf $(BUILD_DIR)
+
+clean-all:
 	$(Q)rm -rf $(dir $(BUILD_DIR))
 
 run: all

assets/Makefile

@@ -26,5 +26,7 @@ $(BUILD_DIR)/$(notdir $(ASSETS_DIR))/%.o: $(ASSETS_DIR)/% $(ASSET_BUILDER_OUTPUT
 	@echo -e "[$(PERCENTAGE)%] $(GREEN)Building ASSET object $@$(RESET)"
 	$(Q)$(ASSET_BUILDER_OUTPUT) $@ -c $<
 
-$(ASSET_BUILDER_OUTPUT):
+$(ASSET_BUILDER_OUTPUT): FORCE
 	$(Q)cd $(ASSET_BUILDER_DIR) && $(MAKE) $@
+
+FORCE:

configure

@@ -69,7 +69,7 @@ done
 
 ## Clean
 if [ -n "${CLEAN}" ]; then
-    make clean
+    make clean-all
     rm -rf ${CONFIG_FILE}
 fi
 

src/Makefile

@@ -33,7 +33,9 @@ $(BUILD_DIR)/$(notdir $(SOURCE_DIR))/%.o: $(SOURCE_DIR)/%
 	@echo -e "[$(PERCENTAGE)%] $(GREEN)Building C object $@$(RESET)"
 	$(Q)$(TARGET_HOST_CC) $(TARGET_HOST_CFLAGS) $(INCLUDES:%=-I%) -MMD -MP -c $< -o $@
 
-$(LIBCORE):
+$(LIBCORE): FORCE
 	$(Q)cd $(CORE_DIR) && $(MAKE) $@
 
+FORCE:
+
 -include $(OBJECTS:.o=.d)