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Date: Mon, 13 May 2013 21:52:35 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
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Subject: Subdirectory output dependencies
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To: linux-kbuild@vger.kernel.org

What is the proper way to indicate to Kbuild that something in the
current directory depends on something built in a subdirectory?

Specifically, something like:

obj-y += foo/
obj-y += bar.o

... where bar.o depends on a header file generated inside the foo directory?

	-hpa