diff --git a/cmake/modules/TableGen.cmake b/cmake/modules/TableGen.cmake
index e61a3427cc2..c1a11b34261 100644
--- a/cmake/modules/TableGen.cmake
+++ b/cmake/modules/TableGen.cmake
@@ -18,7 +18,10 @@ macro(tablegen ofn)
     -I ${LLVM_MAIN_SRC_DIR}/lib/Target -I ${LLVM_MAIN_INCLUDE_DIR}
     ${LLVM_TARGET_DEFINITIONS_ABSOLUTE} 
     -o ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
-    DEPENDS tblgen ${local_tds} ${global_tds}
+    # The file in LLVM_TARGET_DEFINITIONS may be not in the current
+    # directory and local_tds may not contain it, so we must
+    # explicitly list it here:
+    DEPENDS tblgen ${local_tds} ${global_tds} ${LLVM_TARGET_DEFINITIONS_ABSOLUTE}
     COMMENT "Building ${ofn}..."
     )
   add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn}