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$(info xxx) output interleaved with other $(info) output

From: Paul Eggert
Subject: $(info xxx) output interleaved with other $(info) output
Date: Wed, 19 Jan 2022 15:28:15 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.1

I recently modified the Emacs build procedure to use '$(info xxx)' instead of 'echo xxx' to avoid some fork+execs and simplify strace-oriented debugging. Unfortunately, Lars Ingebrigtsen reports that this results in confused output with 'make -j' because $(info xxx) outputs xxx and the following newline with two syscalls (it should be one).

Proposed patch attached.

Attachment: 0001-Fix-interleaved-info-output.patch
Description: Text Data

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