bug#53358: 29.0.50; Compilation output messed up again

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Wed, 19 Jan 2022 09:20:36 +0100
> 
> 
> A while back, Paul fixed the compilation output so that we wouldn't get
> messed-up "make -j16" output, but recently it's started again:
> 
>   ELC      ../lisp/button.elc  ELC      ../lisp/composite.elc
>   ELC      ../lisp/buff-menu.elc  ELC      ../lisp/cus-face.elc
> 
>   ELC      ../lisp/cus-start.elc
>   ELC      ../lisp/custom.elc
>   ELC      ../lisp/disp-table.elc  ELC      ../lisp/dnd.elc
> 
>   ELC      ../lisp/dos-fns.elc
> 
> I think I've seen this the past couple of weeks, possibly?
> 
> I don't quite recall what Paul's fixes entailed...  anybody remember?
> And does anybody know what has changed in this area lately?

Maybe the changeset below?

  commit eaa44ca40e8da9ba86e6e03b76b41fd6843661d6
  Author:     Paul Eggert <eggert@cs.ucla.edu>
  AuthorDate: Mon Dec 20 12:14:07 2021 -0800
  Commit:     Paul Eggert <eggert@cs.ucla.edu>
  CommitDate: Mon Dec 20 12:24:04 2021 -0800

      Prefer $(info) to @echo

      Have GNU Make output some diagnostics directly, instead of forking
      and execing a shell to do it.
      * GNUmakefile (help):
      * doc/lispref/two-volume.make (vol2.pdf, elisp2med-init)
      (elisp2-init):
      * doc/misc/Makefile.in (echo-info, echo-sources):
      * lib-src/Makefile.in (archlibdir, install, check):
      * src/verbose.mk.in (AM_V_AR, AM_V_CC, AM_V_CXX, AM_V_CCLD)
      (AM_V_CXXLD, AM_V_ELC, AM_V_ELN, AM_V_GEN, AM_V_GLOBALS)
      (AM_V_RC):
      * test/Makefile.in (subdirs, subdir-targets):
      Prefer $(info) to @echo.
      * GNUmakefile (MAKECMDGOALS, configure, Makefile):
      Prefer $(warning) to @echo >&2.
      * src/verbose.mk.in (AM_V_ELN): Output target, like the others.