From d71278417773bfcb64248a0dce1acff6f4f5bbc4 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 8 Jun 2016 09:33:56 +0100
Subject: [PATCH] Disabled the -Wextra warning as resolve the warnings will
 create other warnings under other compilers

---
 src/osgViewer/CMakeLists.txt | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/osgViewer/CMakeLists.txt b/src/osgViewer/CMakeLists.txt
index 8c09c129a..4872aaf86 100644
--- a/src/osgViewer/CMakeLists.txt
+++ b/src/osgViewer/CMakeLists.txt
@@ -7,8 +7,18 @@ ENDIF()
 
 SET(LIB_NAME osgViewer)
 
+
+################################################################################
+## Quieten warnings that a due to optional code paths
+
+IF(CMAKE_COMPILER_IS_GNUCXX)
+    # Remove -Wextra flag as it barfs on ffmoeg headers
+   STRING(REGEX REPLACE "-Wextra" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
+ENDIF()
+
 SET(HEADER_PATH ${OpenSceneGraph_SOURCE_DIR}/include/${LIB_NAME})
 
+
 FILE(GLOB CONFIG_HEADER_FILES ${HEADER_PATH}/config/*)
 FILE(GLOB CONFIG_SOURCE_FILES config/*.cpp)