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Date: Thu, 31 Jul 2014 10:34:07 +0200
From: Marc Kleine-Budde <mkl@pengutronix.de>
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Subject: Re: [ptxdist] configure failed with sed version 4.2.2
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On 07/29/2014 04:39 PM, Kristof Verdonck wrote:
> I'm using an ancient ptxdist, but that doesn't matter because I'm
> isolating the SED-version check.
>=20
> If I run the regex
> from http://git.pengutronix.de/?p=3Dptxdist.git;a=3Dblob;f=3Dconfigure.=
ac;h=3D22c8df03a8c225514a3df7ba4c9fb29c515c3e24;hb=3DHEAD
> sed --version 2>/dev/null | sed -ne "1 s/.*GNU.*\s\([[0-9\+\.]]\+\).*/\=
1/p"
> then it returns empty, both with sed 4.2.1 and 4.2.2.

Are you using the unmodified regex from the configure.ac in the shell?

Try this instead:

    sed --version 2>/dev/null | \
        sed -ne "1 s/.*GNU.*\s\([0-9\+\.]\+\).*/\1/p"

Note: '[' vs. '[[', as you have to quote '[' in configure.ac, as it's
processed by m4.

Marc

--=20
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
Vertretung West/Dortmund          | Fax:   +49-5121-206917-5555 |
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