Index: lttoolbox/lt_append.cc
--- lttoolbox/lt_append.cc.orig
+++ lttoolbox/lt_append.cc
@@ -19,9 +19,14 @@
 #include <lttoolbox/cli.h>
 #include <lttoolbox/lt_locale.h>
 #include <iostream>
+#include <unistd.h>
 
 int main(int argc, char *argv[])
 {
+  if (pledge("stdio rpath wpath cpath", NULL) == -1) {
+    std::cerr << "pledge" << std::endl;
+    return 1;
+  }
   LtLocale::tryToSetLocale();
   CLI cli("add sections to a compiled transducer", PACKAGE_VERSION);
   cli.add_bool_arg('k', "keep", "in case of section name conflicts, keep the one from the first transducer");
