From 79d980954111cd4f3096db41138b0d379c6607fb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Konstantin=20K=C3=A4fer?= <mail@kkaefer.com>
Date: Tue, 11 Jul 2017 11:33:51 +0200
Subject: [build] Don't fail hard for unknown warning groups

---
 CMakeLists.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 189f033b79..694147fc8f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -77,7 +77,10 @@ if(APPLE)
 endif()
 set(CMAKE_CXX_FLAGS_RELEASE "-Os -DNDEBUG")
 
-if(CMAKE_COMPILER_IS_GNUCXX)
+
+if(CMAKE_CXX_COMPILER_ID MATCHES ".*Clang")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-error=unknown-warning-option")
+elseif(CMAKE_COMPILER_IS_GNUCXX)
     # https://svn.boost.org/trac/boost/ticket/9240
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fext-numeric-literals")
 endif()
-- 
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