diff --git a/dbcon/ddlpackage/CMakeLists.txt b/dbcon/ddlpackage/CMakeLists.txt
index 7a5d2198b..c18bf6ab2 100644
--- a/dbcon/ddlpackage/CMakeLists.txt
+++ b/dbcon/ddlpackage/CMakeLists.txt
@@ -11,6 +11,7 @@ set_source_files_properties(ddl-scan.cpp PROPERTIES COMPILE_FLAGS -Wno-sign-comp
 
 ########### next target ###############
 
+include_directories(${CMAKE_CURRENT_BINARY_DIR}) # to pick up flex/bison output
 ADD_LIBRARY(ddlpackage SHARED
     serialize.cpp
     ddl-scan.cpp
diff --git a/dbcon/dmlpackage/CMakeLists.txt b/dbcon/dmlpackage/CMakeLists.txt
index 66e43621f..8982de1a9 100644
--- a/dbcon/dmlpackage/CMakeLists.txt
+++ b/dbcon/dmlpackage/CMakeLists.txt
@@ -12,6 +12,7 @@ set_source_files_properties(dml-scan.cpp PROPERTIES COMPILE_FLAGS -Wno-sign-comp
 
 ########### next target ###############
 
+include_directories(${CMAKE_CURRENT_BINARY_DIR})  # to pick up flex/bison output
 ADD_LIBRARY(dmlpackage SHARED
     dml-scan.cpp
     dml-gram.cpp