[PATCH] Fix make 3.81 build errors

[Andreas Schwab]

On Feb 19 2018, Alan Hayward <Alan.Hayward@arm.com> wrote:

> Make rules in make 3.81 are parsed slightly different than newer
> versions of make.

Probably this change:

* WARNING: Backward-incompatibility!
  The pattern-specific variables and pattern rules are now applied in the
  shortest stem first order instead of the definition order (variables
  and rules with the same stem length are still applied in the definition
  order). This produces the usually-desired behavior where more specific
  patterns are preferred. To detect this feature search for 'shortest-stem'
  in the .FEATURES special variable.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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