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From efa39afecedf75a1f3154c39507bdde2810bc140 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Mon, 6 Jan 2020 18:21:02 -0800
Subject: [PATCH] build: Use -ffreestanding
this is a stand-alone/baremetal application, therefore demanding
-ffreestanding would help it compile with hosted toolchains e.g. ( linux
toolchains ), it also ensures that it won't be using platform
optimizations like inlining mem* str* functions which gcc might decide
especially with wrapper string functions in opensbi code
Upstream-Status: Accepted [https://github.com/riscv/opensbi/commit/049ad0b3877352527ab470eba33bc767e9b54961]
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/Makefile
+++ b/Makefile
@@ -159,7 +159,7 @@ GENFLAGS += $(libsbiutils-genflags-y)
GENFLAGS += $(platform-genflags-y)
GENFLAGS += $(firmware-genflags-y)
-CFLAGS = -g -Wall -Werror -nostdlib -fno-strict-aliasing -O2
+CFLAGS = -g -Wall -Werror -ffreestanding -nostdlib -fno-strict-aliasing -O2
CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
CFLAGS += -mno-save-restore -mstrict-align
CFLAGS += -mcmodel=$(PLATFORM_RISCV_CODE_MODEL)
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