diff --git a/bootstrap b/bootstrap
index c7e3945cfe..eaccfc89c1 100755
--- a/bootstrap
+++ b/bootstrap
@@ -423,6 +423,7 @@ CMAKE_CXX_SOURCES="\
   cmState \
   cmStateDirectory \
   cmStateSnapshot \
+  cmString \
   cmStringAlgorithms \
   cmStringReplaceHelper \
   cmStringCommand \