From: Nick Bowler <nbowler@draconx.ca>
Date: Sun, 6 Jan 2019 16:56:28 +0000 (-0500)
Subject: Fix depfiles compatibility with modern Automake.
X-Git-Url: http://git.draconx.ca/gitweb/dxcommon.git/commitdiff_plain/92a89700c65e52fac8c2cace51a7112d60b3f42f?hp=92a89700c65e52fac8c2cace51a7112d60b3f42f

Fix depfiles compatibility with modern Automake.

Automake 1.16 changes how depfiles are created.  It is now necessary
to define a rule which creates the stub and additionally we must clean
them explicitly.  This is a bit annoying to do but that's the price of
relying on undocumented internal behaviour, I guess.

The extra rule should be harmless when using Automake 1.15.
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