starlight-r193-allow-setting-CMAKE_CXX_FLAGS.patch

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0d6c856..e51b906 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -84,21 +84,21 @@ if (CMAKE_COMPILER_IS_GNUCC)
   if (GCC_VERSION VERSION_GREATER 4.6 OR GCC_VERSION VERSION_EQUAL 4.6)
     message(STATUS "GCC_VERSION>=4.6")
     if(CPP11)
-      set(CMAKE_CXX_FLAGS "-Wall -Wextra -Werror -Wno-error=unused-but-set-variable -Wno-error=unused-but-set-parameter -Wno-error=maybe-uninitialized -Wno-error=unused-variable -std=c++11")
+      set(CMAKE_CXX_FLAGS "-Wall -Wextra -Werror -Wno-error=unused-but-set-variable -Wno-error=unused-but-set-parameter -Wno-error=maybe-uninitialized -Wno-error=unused-variable -std=c++11 ${CMAKE_CXX_FLAGS}")
       message(STATUS "Enabling usage of C++11 features")
     else()
-      set(CMAKE_CXX_FLAGS "-Wall -Wextra -Werror -Wno-error=unused-but-set-variable -Wno-error=unused-but-set-parameter -Wno-error=maybe-uninitialized -Wno-error=unused-variable")
+      set(CMAKE_CXX_FLAGS "-Wall -Wextra -Werror -Wno-error=unused-but-set-variable -Wno-error=unused-but-set-parameter -Wno-error=maybe-uninitialized -Wno-error=unused-variable ${CMAKE_CXX_FLAGS}")
     endif()
   else()
     message(STATUS "GCC_VERSION<4.6")
-    set(CMAKE_CXX_FLAGS "-Wall -Wextra -Werror")
+    set(CMAKE_CXX_FLAGS "-Wall -Wextra -Werror ${CMAKE_CXX_FLAGS}")
     if(CPP11)
       message(WARNING "C++11 feautures not supported for your compiler")
     endif()
   endif()
 else()
   message(STATUS "Not GCC")
-  set(CMAKE_CXX_FLAGS "-Wall -Wextra -Werror")
+  set(CMAKE_CXX_FLAGS "-Wall -Wextra -Werror ${CMAKE_CXX_FLAGS}")
   if(CPP11)
     message(WARNING "C++11 feautures not supported for your compiler")
   endif()