diff --git a/sample_mm/AMBuildScript b/sample_mm/AMBuildScript
index 301ef2c..abe6694 100644
--- a/sample_mm/AMBuildScript
+++ b/sample_mm/AMBuildScript
@@ -183,6 +183,7 @@ class MMSConfig(object):
         '_snprintf=snprintf',
         '_vsnprintf=vsnprintf',
         '_alloca=alloca',
+        'GNUC'
       ]
       cxx.cflags += proj_c_flags
       cxx.cflags += [ # todo: what is the difference between cflags and cxxflags