From 209c9778ad968d9f6e6b5255d5fe28c94e803e33 Mon Sep 17 00:00:00 2001
From: HardenedVault <root@hardenedvault.net>
Date: Wed, 21 Oct 2020 16:04:00 +0200
Subject: [PATCH] Use -isystem instead of -I to introduce header files of
 target system

If using -I to introduce header files, the elf.h in the target system
instead of elf.h shipped with kexec-tools will be included, making its
building process failed.
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index a0bda55b..23ffbfa6 100644
--- a/Makefile
+++ b/Makefile
@@ -111,7 +111,7 @@ heads_cc	:= $(CROSS)gcc \
 	-fdebug-prefix-map=$(pwd)=heads \
 	-gno-record-gcc-switches \
 	-D__MUSL__ \
-	-I$(INSTALL)/include \
+	-isystem $(INSTALL)/include \
 	-L$(INSTALL)/lib \
 
 CROSS_TOOLS_NOCC := \