1 files changed, 2 insertions, 0 deletions
diff --git a/flex.skl b/flex.skl
index b7511c5..b935c0a 100644
--- a/flex.skl
+++ b/flex.skl
@@ -56,6 +56,7 @@ m4_changequote([[, ]])
 %#
 
 %not-for-header
+%if-c-only
 %if-not-reentrant
 m4_ifelse(M4_YY_PREFIX,yy,,
 #define yy_create_buffer M4_YY_PREFIX[[_create_buffer]]
@@ -78,6 +79,7 @@ m4_ifelse(M4_YY_PREFIX,yy,,
 #define yyfree M4_YY_PREFIX[[free]]
 )
 %endif
+%endif
 %ok-for-header
 
 #define FLEX_SCANNER