From aaafef71311a479580d2764c8fb7cb42baab35a3 Mon Sep 17 00:00:00 2001
From: Heiko Stuebner <heiko.stuebner@vrull.eu>
Date: Wed, 26 Oct 2022 13:18:37 +0200
Subject: [PATCH v2 11/13] efi/riscv: libstub: mark when compiling libstub

We may want to runtime-optimize some core functions (str*, mem*),
but not have this leak into libstub and cause build issues.
Instead libstub, for the short while it's running, should just use
the generic implementation.

So, to be able to determine whether functions, that are used both in
libstub and the main kernel, are getting compiled as part of libstub or
not, add a compile-flag we can check via #ifdef.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
---
 drivers/firmware/efi/libstub/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
index b1601aad7e1a..39c8e3da1937 100644
--- a/drivers/firmware/efi/libstub/Makefile
+++ b/drivers/firmware/efi/libstub/Makefile
@@ -25,7 +25,7 @@ cflags-$(CONFIG_ARM)		:= $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) \
 				   -fno-builtin -fpic \
 				   $(call cc-option,-mno-single-pic-base)
 cflags-$(CONFIG_RISCV)		:= $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) \
-				   -fpic
+				   -fpic -DRISCV_EFISTUB
 cflags-$(CONFIG_LOONGARCH)	:= $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) \
 				   -fpie
 
-- 
2.35.1

