+if mkdir -p --version . >/dev/null 2>&1 && test ! -d ./--version; then
+ # Keeping the `.' argument allows $(mkdir_p) to be used without
+ # argument. Indeed, we sometimes output rules like
+ # $(mkdir_p) $(somedir)
+ # where $(somedir) is conditionally defined.
+ # (`test -n '$(somedir)' && $(mkdir_p) $(somedir)' is a more
+ # expensive solution, as it forces Make to start a sub-shell.)
+ mkdir_p='mkdir -p -- .'
+else
+ # On NextStep and OpenStep, the `mkdir' command does not
+ # recognize any option. It will interpret all options as
+ # directories to create, and then abort because `.' already
+ # exists.
+ for d in ./-p ./--version;
+ do
+ test -d $d && rmdir $d
+ done
+ # $(mkinstalldirs) is defined by Automake if mkinstalldirs exists.
+ if test -f "$ac_aux_dir/mkinstalldirs"; then
+ mkdir_p='$(mkinstalldirs)'
+ else
+ mkdir_p='$(install_sh) -d'
+ fi
+fi
+