commit a5d3497577c78b03c05c69d17df972fa9fb54f53
Author: Linus Heckemann <git@sphalerite.org>
Date:   Fri Jan 5 23:57:09 2018 +0100

    Add -Wno-narrowing to GWEN's CMakeLists
    
    This avoids the compilation issue that occurs on aarch64 with gcc6.
    (nixpkgs-specific patch)

diff --git a/examples/ThirdPartyLibs/Gwen/CMakeLists.txt b/examples/ThirdPartyLibs/Gwen/CMakeLists.txt
index 82fa0ffba..26c4bbd37 100644
--- a/examples/ThirdPartyLibs/Gwen/CMakeLists.txt
+++ b/examples/ThirdPartyLibs/Gwen/CMakeLists.txt
@@ -15,7 +15,7 @@ IF(NOT WIN32 AND NOT APPLE)
         ADD_DEFINITIONS("-DDYNAMIC_LOAD_X11_FUNCTIONS=1")
 ENDIF()
 
-ADD_DEFINITIONS( -DGLEW_STATIC -DGWEN_COMPILE_STATIC -D_HAS_EXCEPTIONS=0 -D_STATIC_CPPLIB )
+ADD_DEFINITIONS( -DGLEW_STATIC -DGWEN_COMPILE_STATIC -D_HAS_EXCEPTIONS=0 -D_STATIC_CPPLIB -Wno-narrowing )
 
 FILE(GLOB gwen_SRCS "*.cpp" "Controls/*.cpp" "Controls/Dialog/*.cpp" "Controls/Dialogs/*.cpp" "Controls/Layout/*.cpp" "Controls/Property/*.cpp" "Input/*.cpp" "Platforms/*.cpp" "Renderers/*.cpp" "Skins/*.cpp")
 FILE(GLOB gwen_HDRS "*.h" "Controls/*.h" "Controls/Dialog/*.h" "Controls/Dialogs/*.h" "Controls/Layout/*.h" "Controls/Property/*.h" "Input/*.h" "Platforms/*.h" "Renderers/*.h" "Skins/*.h")