From: Mischa POSLAWSKY <perl@shiar.org>
Date: Sun, 4 Jun 2017 21:54:51 +0000 (+0200)
Subject: tools: preserve make errors, ignore empty output
X-Git-Tag: v1.11~60
X-Git-Url: http://git.shiar.nl/sheet.git/commitdiff_plain/94fea8c0e6ba8cea67d69dd0e49142811bba1611?hp=94fea8c0e6ba8cea67d69dd0e49142811bba1611

tools: preserve make errors, ignore empty output

Exit codes lost since commit v1.9-305-ga7e3d17ab8 (2017-05-29)
[tools: atomic creation of include files].  Fixed using `mispipe`
also provided by moreutils.  As additional fail-safe, also catch
empty results with `ifne` to keep existing data on failure.
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