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From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Tue, 27 Oct 2020 08:25:01 -0700
Message-ID: <CAMe9rOr311Q=+-3uikzo31B0WHwA8sBrYbquy+E2t2gOe4mHEQ@mail.gmail.com>
Subject: Re: [PATCH] Implement a workaround for GNU mak jobserver
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: "H.J. Lu via Binutils" <binutils@sourceware.org>
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On Tue, Oct 27, 2020 at 8:14 AM Andreas Schwab <schwab@linux-m68k.org> wrote:
>
> On Okt 27 2020, H.J. Lu via Binutils wrote:
>
> > +touch --reference=Makefile Makefile.tmp \
>
> This is not portable.
>

Since it must keep the same timestamps on config.status and Makefile, I used

if touch --reference=config.status config.status.tmp > /dev/null 2>&1; then
  sed '/as_fn_exit 0/i \
sed -e \"s/^\t\\\(\\\$(AM_V_CCLD)\\\)/\t+ \\\1/\" Makefile > Makefile.tmp \
touch --reference=Makefile Makefile.tmp \

If touch doesn't support --reference, the workaround isn't applied.

-- 
H.J.