include $(TOPDIR)/samd21/Makefile-samd21.defs
-LDFLAGS=-nostartfiles $(CFLAGS) -L$(TOPDIR)/samd21 -Taltos.ld -n
+SAMD21_LINKER_SCRIPT=altos-$(SAMD21_ROM)-$(SAMD21_RAM).ld
+
+LDFLAGS=-nostartfiles $(CFLAGS) -L$(TOPDIR)/samd21 -T$(SAMD21_LINKER_SCRIPT) -n
.DEFAULT_GOAL=all