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-------- Original Message --------
Subject: re: jobserver unavailable: using -j1. Add `+' to parent make
rule.
Date: Sun, 10 Aug 2014 10:32:10 +0300
From: Alexander Kapshuk <alexander.kaps...@gmail.com>
To: gentoo-user@lists.gentoo.org
Howdy,
I've seen this warning generated for a couple of packages lately.
>>> Messages generated by process 3353 on 2014-07-28 08:45:18 EEST for
package x11-misc/xscreensaver-5.29:
QA: install
QA Notice: make jobserver unavailable:
make[1]: warning: jobserver unavailable: using -j1. Add `+' to
parent make rule.
>>> Messages generated by process 3391 on 2014-08-10 09:04:54 EEST for
package dev-libs/openssl-1.0.1i:
QA: install
QA Notice: make jobserver unavailable:
make[2]: warning: jobserver unavailable: using -j1. Add `+' to
parent make rule.
Is this something that requires the user to act upon, or does it
indicate a deficiency in one of the makefiles that came with the package?
If I am reading the extract below correctly, it is the latter.
https://www.gnu.org/software/make/manual/html_node/Error-Messages.html
'warning: jobserver unavailable: using -j1. Add `+' to parent make rule.'
In order for |make| processes to communicate, the parent will pass
information to the child. Since this could result in problems if the
child process isn't actually a |make|, the parent will only do this
if it thinks the child is a |make|. The parent uses the normal
algorithms to determine this (see How the |MAKE| Variable Works
<https://www.gnu.org/software/make/manual/html_node/MAKE-Variable.html#MAKE-Variable>).
If the makefile is constructed such that the parent doesn't know the
child is a |make| process, then the child will receive only part of
the information necessary. In this case, the child will generate
this warning message and proceed with its build in a sequential manner.
Thanks.
