diff --git a/cppadcodegen/Makefile b/cppadcodegen/Makefile
index ecc392b00ee66b8afd97b4a54871d8f66bd08035..554333731cc260e2c39cf9a8511624d615feaa81 100644
--- a/cppadcodegen/Makefile
+++ b/cppadcodegen/Makefile
@@ -23,6 +23,7 @@ CMAKE_ARGS+=	-DCREATE_DOXYGEN_DOC=YES
 DYNAMIC_PLIST_DIRS+=	share/doc/cppadcg
 
 include ../../wip/cppad/depend.mk
+include ../../wip/mk/sysdep/llvm.mk
 include ../../math/eigen3/depend.mk
 include ../../mk/sysdep/doxygen.mk
 include ../../mk/sysdep/cmake.mk