diff --git a/mlir/CMakeLists.txt b/mlir/CMakeLists.txt
--- a/mlir/CMakeLists.txt
+++ b/mlir/CMakeLists.txt
@@ -164,6 +164,8 @@
 
 set(MLIR_TABLEGEN_EXE "${MLIR_TABLEGEN_EXE}" CACHE INTERNAL "")
 set(MLIR_TABLEGEN_TARGET "${MLIR_TABLEGEN_TARGET}" CACHE INTERNAL "")
+set(MLIR_PDLL_TABLEGEN_EXE "${MLIR_PDLL_TABLEGEN_EXE}" CACHE INTERNAL "")
+set(MLIR_PDLL_TABLEGEN_TARGET "${MLIR_PDLL_TABLEGEN_TARGET}" CACHE INTERNAL "")
 
 add_subdirectory(include/mlir)
 add_subdirectory(lib)