--- camlp4-4.02-6.orig/myocamlbuild.ml	2015-06-17 13:37:36.000000000 +0200
+++ camlp4-4.02+6/myocamlbuild.ml	2016-10-13 13:57:35.512213600 +0200
@@ -86,7 +86,7 @@
         let dep = "camlp4"/"boot"/exe in
         let cmd =
           let ( / ) = Filename.concat in
-          "camlp4"/"boot"/exe
+          String.escaped (String.escaped ("camlp4"/"boot"/exe))
         in
         (Some dep, cmd)
     in