Index: llvm/trunk/cmake/modules/AddOCaml.cmake
===================================================================
--- llvm/trunk/cmake/modules/AddOCaml.cmake
+++ llvm/trunk/cmake/modules/AddOCaml.cmake
@@ -87,6 +87,11 @@
   foreach( include_dir ${LLVM_INCLUDE_DIR} ${LLVM_MAIN_INCLUDE_DIR} )
     set(c_flags "${c_flags} -I${include_dir}")
   endforeach()
+  # include -D/-UNDEBUG to match dump function visibility
+  # regex from HandleLLVMOptions.cmake
+  string(REGEX MATCH "(^| )[/-][UD] *NDEBUG($| )" flag_matches
+         "${CMAKE_C_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${CMAKE_C_FLAGS}")
+  set(c_flags "${c_flags} ${flag_matches}")
 
   foreach( ocaml_file ${ARG_OCAML} )
     list(APPEND sources "${ocaml_file}.mli" "${ocaml_file}.ml")