fw: add override specifier to Strategy triggers

refs #2281

Change-Id: I5357ac6a93260492900d24c8955fdd7397ef2d27
diff --git a/wscript b/wscript
index 548fad3..65c249a 100644
--- a/wscript
+++ b/wscript
@@ -36,7 +36,7 @@
     opt.load(['compiler_cxx', 'gnu_dirs'])
     opt.load(['boost', 'unix-socket', 'dependency-checker', 'websocket',
               'default-compiler-flags', 'coverage', 'pch', 'boost-kqueue',
-              'doxygen', 'sphinx_build', 'type_traits'],
+              'doxygen', 'sphinx_build', 'type_traits', 'compiler-features'],
              tooldir=['.waf-tools'])
 
     nfdopt = opt.add_option_group('NFD Options')
@@ -59,7 +59,7 @@
     conf.load(['compiler_cxx', 'gnu_dirs',
                'default-compiler-flags', 'pch', 'boost-kqueue',
                'boost', 'dependency-checker', 'websocket',
-               'doxygen', 'sphinx_build', 'type_traits'])
+               'doxygen', 'sphinx_build', 'type_traits', 'compiler-features'])
 
     conf.find_program('bash', var='BASH')