From 0d7f06b6cdfef872ef9afbc0b2f628ae086cd077 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89rico=20Rolim?= <erico.erc@gmail.com>
Date: Mon, 1 Feb 2021 12:14:28 -0300
Subject: [PATCH] environment/configure/hardening: add -Werror=implicit.

Warnings for implicit function definitions should be errors, since they
can lead to issues down the line when the implicit type rules get things
wrong, especially with variadic functions.
---
 common/environment/configure/hardening.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/common/environment/configure/hardening.sh b/common/environment/configure/hardening.sh
index 9e02364f2a1..5e07eccf030 100644
--- a/common/environment/configure/hardening.sh
+++ b/common/environment/configure/hardening.sh
@@ -28,3 +28,5 @@ else
 	FFLAGS="-fno-PIE ${FFLAGS}"
 	LDFLAGS="-no-pie ${LDFLAGS}"
 fi
+
+CFLAGS="${CFLAGS} -Werror=implicit"