build: disable unknown warning option error in clang

Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ecdb94619626d957fbe3ec86d654581c9e0dd4d9..696412b51f451d110cdbca87c164f066cddf7da3 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 2.6)
 
 PROJECT(netifd C)
-ADD_DEFINITIONS(-Os -Wall -Werror --std=gnu99 -Wmissing-declarations -Wno-format-truncation)
+ADD_DEFINITIONS(-Os -Wall -Werror --std=gnu99 -Wmissing-declarations -Wno-unknown-warning-option -Wno-format-truncation)
 
 SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")