--- zzzz-none-000/linux-3.10.107/arch/openrisc/Makefile	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/openrisc/Makefile	2021-02-04 17:41:59.000000000 +0000
@@ -24,7 +24,7 @@
 LDFLAGS_vmlinux :=
 LIBGCC 		:= $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
 
-KBUILD_CFLAGS	+= -pipe -ffixed-r10
+KBUILD_CFLAGS	+= -pipe -ffixed-r10 -D__linux__
 
 ifeq ($(CONFIG_OPENRISC_HAVE_INST_MUL),y)
 	KBUILD_CFLAGS += $(call cc-option,-mhard-mul)