From e3c9bc7edf33dbbeb124ae7de71d6d1932fea80e Mon Sep 17 00:00:00 2001
From: Matthew Barr <matthew.barr@intel.com>
Date: Tue, 19 Jul 2016 09:23:57 +1000
Subject: [PATCH] GCC 6 warns about unused attributes - disable the warning

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

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0b86b2c1..24061c42 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -317,6 +317,11 @@ if (CXX_UNUSED_CONST_VAR)
     set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -Wno-unused-const-variable")
 endif()
 
+# gcc 6 complains about type attributes that get ignored, like alignment
+CHECK_CXX_COMPILER_FLAG("-Wignored-attributes" CXX_IGNORED_ATTR)
+if (CXX_IGNORED_ATTR)
+    set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -Wno-ignored-attributes")
+endif()
 
 # note this for later
 # g++ doesn't have this flag but clang does