| From: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Dagfinn Ilmari Mannsåker <ilmari(at)ilmari(dot)org> |
| Cc: | Michael Paquier <michael(at)paquier(dot)xyz>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Fixing parallel make of libpq |
| Date: | 2020-01-10 12:29:56 |
| Message-ID: | a8044694-412c-74e2-7be7-20315b52ad5a@2ndquadrant.com |
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| Lists: | pgsql-hackers |
On 2020-01-09 15:17, Tom Lane wrote:
> 1) Changing from an "|"-style dependency to a plain dependency seems
> like a semantics change. I've never been totally clear on the
> difference though. I think Peter introduced our use of the "|" style,
> so maybe he can comment.
If you have a phony target as a prerequisite of a real-file target, you
should make that an order-only ("|") prerequisite. Otherwise the
real-file target rules will *always* be run, on account of the phony
target prerequisite.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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