commit 91a200befb4f10753483bcd831cbc81aa5955e24
author Brad Bishop <bradleyb@fuzziesquirrel.com> Thu Aug 22 14:24:33 2019 -0400
committer Joel Stanley <joel@jms.id.au> Wed Sep 04 07:23:06 2019 +0000
tree ea95f569c5cbc0c34179fc47ff63ecd7221d62e3
parent b925511c1e7213ebc851e1ee01abfa15cf3fd2b8

build-setup: explicitly set MACHINE and DISTRO

An OE based build system typically has three inputs from the user; the
machine target (MACHINE), the distro policy (DISTRO), and the package
content (aka image/recipe being baked).

Using TEMPLATECONF to generate local.conf attempts to map the machine
target and distro policy down to a single input but is an abuse of
TEMPLATECONF and places constraints on use of conventional OE metadata
structure paradigms.  For example a layer can only provide a single
local.conf.sample but can support multiple machine targets and distro
policy sets.

Formalize a "target" for the build-setup script to be the desired
MACHINE+DISTRO combination.  Explicitly declere the desired combination
for each target.  This allows layer authors full flexibility when
organizing their metadata.

Change-Id: Ia6a335135966b82120513c75d1617bf70b811a2e
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>