diff --git a/Installation/cmake/modules/CGAL_SetupBoost.cmake b/Installation/cmake/modules/CGAL_SetupBoost.cmake
index 5e652c9a22c..0d5b5570e72 100644
--- a/Installation/cmake/modules/CGAL_SetupBoost.cmake
+++ b/Installation/cmake/modules/CGAL_SetupBoost.cmake
@@ -10,10 +10,10 @@ if ( NOT CGAL_Boost_Setup )
       AND(
         #GCC 4.8+ with c++11 on
         ( NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.8
-          AND CMAKE_CXX_FLAGS MATCHES "\\-std=c\\+\\+[01][14yx]")
+          AND CMAKE_CXX_FLAGS MATCHES "\\-std=(c|gnu)\\+\\+[01][14yxz]")
         #GCC 6.0+ without c++03 on
         OR ( NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.0
-             AND NOT CMAKE_CXX_FLAGS MATCHES "\\-std=c\\+\\+[90][83]")
+             AND NOT CMAKE_CXX_FLAGS MATCHES "\\-std=(c|gnu)\\+\\+[90][83]")
       ) )
     set ( CGAL_requires_Boost_libs FALSE )
   endif()