diff --git a/CMakeLists.txt b/CMakeLists.txt
index b301cf1..789b660 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -462,6 +462,9 @@ endif()
 
 # Boost (required)
 include("${PCL_SOURCE_DIR}/cmake/pcl_find_boost.cmake")
+if (NOT APPLE AND NOT WIN32)
+    add_definitions(-fext-numeric-literals)
+endif()
 
 ### ---[ Create the config.h file
 set(pcl_config_h_in "${CMAKE_CURRENT_SOURCE_DIR}/pcl_config.h.in")