From 72c14a53fee79b617f4fd6bdfb8d5e8332538f33 Mon Sep 17 00:00:00 2001
From: Thomas Klaehn <thomas.klaehn@perinet.io>
Date: Mon, 22 Jul 2019 16:16:03 +0200
Subject: [PATCH] Fix Makefile

---
 Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 45e39ec..f59a646 100644
--- a/Makefile
+++ b/Makefile
@@ -22,8 +22,9 @@ PREFIX ?= /usr
 LIB_INSTALL_DIR ?= $(PREFIX)/lib/$(TARGET_FILE)
 INC_INSTALL_DIR ?= $(PREFIX)/include/lib$(TARGET_FILE)
 
-INCLUDES += inc
+INCLUDES := inc
 INCLUDES += $(PREFIX)/include/
+INCLUDES += $(EXTRA_INC)
 
 ifneq "$(findstring $(MAKECMDGOALS), build_unit_test exec_unit_test coverage)" ""
 INCLUDES += test/inc