build: stop make compile-db from having to call make clean

Makefile

@@ -69,8 +69,6 @@ clean:
 	@rm -rf $(BUILD_DIR)
 
 $(BUILD_DIR)/compile_commands.json:
-	@$(MAKE) --no-print-directory clean
-
 	@printf "    \033[1;93mGEN\033[0m    Generating compiler database.\n"
 
 	@./tools/make/generate_compile_commands.py
@@ -82,6 +80,6 @@ tools:
 
 include arch/$(ARCH)/extra.mk
 
-.PHONY: all tools compile-db
+.PHONY: all tools compile-db $(BUILD_DIR)/compile_commands.json
 
 .INTERMEDIATE: $(ARCH_TEMP_FILES)

tools/make/generate_compile_commands.py

@@ -12,7 +12,7 @@ rootdir = os.getcwd()
 
 compile_db = []
 
-make_output = subprocess.check_output(['make', '-nw']).decode('utf-8')
+make_output = subprocess.check_output(['make', '-nwB']).decode('utf-8')
 
 make_output_lines = make_output.split('\n')