diff --git a/Makefile.compile b/Makefile.compile
index fd3f706c..3d9d6067 100644
--- a/Makefile.compile
+++ b/Makefile.compile
@@ -5,6 +5,7 @@ AS        = $(CROSS_COMPILE)gcc
 CC        = $(CROSS_COMPILE)gcc
 CXX       = $(CROSS_COMPILE)g++
 LD        = $(CROSS_COMPILE)ld
+AR        = $(CROSS_COMPILE)ar
 OBJDUMP   = $(CROSS_COMPILE)objdump
 OBJCOPY   = $(CROSS_COMPILE)objcopy
 READELF   = $(CROSS_COMPILE)readelf
diff --git a/Makefile.lib b/Makefile.lib
index 0e57035a..bf5e8d70 100644
--- a/Makefile.lib
+++ b/Makefile.lib
@@ -15,10 +15,12 @@ CFLAGS  += -fdata-sections -ffunction-sections -fno-builtin
 ## Paste in "Makefile.compile" here
 include $(AM_HOME)/Makefile.compile
 
+AR       = $(CROSS_COMPILE)ar
+
 ## Compliation rule for objects -> .a (using ar)
 $(ARCHIVE): $(OBJS)
 	@echo + AR "->" $(shell realpath $@ --relative-to .)
-	@ar rcs $(ARCHIVE) $(OBJS)
+	@$(AR) rcs $(ARCHIVE) $(OBJS)
 
 clean: 
 	rm -rf $(LIB_DIR)/build/