add missing entry

diff --git a/src/extension/internal/Makefile_insert b/src/extension/internal/Makefile_insert
index 8bf6638527196b09f428d0b910b29cf1921a1219..834bf0d317c5f283715ba6c9cf73d7f263c8ba59 100644 (file)
--- a/src/extension/internal/Makefile_insert
+++ b/src/extension/internal/Makefile_insert
@@ -14,6 +14,7 @@ endif
 extension_internal_libinternal_a_SOURCES =     \
        extension/internal/bluredge.h   \
        extension/internal/bluredge.cpp \
+        extension/internal/clear-n_.h   \
        extension/internal/grid.h       \
        extension/internal/grid.cpp     \
 \