diff --git a/cmake/Modules/UseWarnings.cmake b/cmake/Modules/UseWarnings.cmake
index 82bf81913..a2157df18 100644
--- a/cmake/Modules/UseWarnings.cmake
+++ b/cmake/Modules/UseWarnings.cmake
@@ -15,17 +15,5 @@ endif ()
 
 option(SILENCE_EXTERNAL_WARNINGS "Disable some warnings from external packages (requires GCC 4.6 or newer)" OFF)
 if(SILENCE_EXTERNAL_WARNINGS AND CXX_COMPAT_GCC)
-  file(WRITE ${CMAKE_BINARY_DIR}/disable_warning_pragmas.h "
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored \"-Wdeprecated-declarations\"
-#pragma GCC diagnostic ignored \"-Wdeprecated-register\"
-#pragma GCC diagnostic ignored \"-Wignored-qualifiers\"
-#pragma GCC diagnostic ignored \"-Wmismatched-tags\"
-#pragma GCC diagnostic ignored \"-Wshadow\"
-#pragma GCC diagnostic ignored \"-Wsign-compare\"
-#pragma GCC diagnostic ignored \"-Wunused-parameter\"")
-  file(WRITE ${CMAKE_BINARY_DIR}/reenable_warning_pragmas.h "#pragma GCC diagnostic pop")
-else()
-    file(WRITE ${CMAKE_BINARY_DIR}/disable_warning_pragmas.h "")
-    file(WRITE ${CMAKE_BINARY_DIR}/reenable_warning_pragmas.h "")
+  add_definitions(-DSILENCE_EXTERNAL_WARNINGS)
 endif()