--- ./Makefile.orig	2021-10-10 17:13:11.147988944 +0200
+++ ./Makefile	2021-10-10 17:12:41.424662424 +0200
@@ -76,7 +76,7 @@
   CFLAGS += -Wchar-subscripts -funsigned-char
   CFLAGS += -MMD -MF $(OBJDIR)/$(@F).d
   ifdef CONFIG_DEFAULT_AR
-    AR=$(CROSS_PREFIX)ar
+    AR ?= $(CROSS_PREFIX)ar
   else
     ifdef CONFIG_LTO
       AR=$(CROSS_PREFIX)llvm-ar
@@ -95,7 +95,7 @@
     AR=$(CROSS_PREFIX)ar
   endif
 endif
-STRIP=$(CROSS_PREFIX)strip
+STRIP ?= $(CROSS_PREFIX)strip
 ifdef CONFIG_WERROR
 CFLAGS+=-Werror
 endif
@@ -112,7 +112,7 @@
 CFLAGS_SMALL=$(CFLAGS) -Os
 CFLAGS_OPT=$(CFLAGS) -O2
 CFLAGS_NOLTO:=$(CFLAGS_OPT)
-LDFLAGS=-g
+LDFLAGS+=-g
 ifdef CONFIG_LTO
 CFLAGS_SMALL+=-flto
 CFLAGS_OPT+=-flto