diff --git a/Makefile b/Makefile
index 6538fab..4b24ca6 100644
--- a/Makefile
+++ b/Makefile
@@ -49,13 +49,13 @@ endif
 clean:
 	$(RM) -rf $(BUILD_DIR)
 
-distclean:
-	$(MAKE) clean
+distclean: clean
+	$(MAKE) -C tools distclean
 	$(RM) -rf $(BASE_DIR)
 
 setup:
 	cd $(BASE_DIR) && $(AR) xo ../$(BASE_AR)
-	chmod -R 777 $(BASE_DIR)
+	chmod -R +rw $(BASE_DIR)
 
 $(BUILD_DIR)/$(BASE_DIR)/%.o: $(BASE_DIR)/%.o
 	cp $< $@
diff --git a/tools/Makefile b/tools/Makefile
index d5896b0..de43714 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -1,8 +1,15 @@
 
-all:
+.PHONY=all clean distclean
+all: ar
 	$(MAKE) -C kmc-gcc-wrapper
 
+ar:
+	wget https://github.com/decompals/mips-binutils-2.7/releases/download/main/binutils-2.7.tar.gz
+	tar xf binutils-2.7.tar.gz
+	$(RM) binutils-2.7.tar.gz
+
 clean:
 	$(MAKE) -C kmc-gcc-wrapper clean
 
 distclean: clean
+	$(RM) ar