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X-HELO: calimero.vinschen.de
Date: Mon, 26 Oct 2015 11:01:48 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Cc: Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
Subject: Re: Bash unable to print epoch timestamp
Message-ID: <20151026100148.GB31990@calimero.vinschen.de>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com,	Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
References: <loom DOT 20151022T010214-951 AT post DOT gmane DOT org> <loom DOT 20151022T084651-899 AT post DOT gmane DOT org> <20151022084626 DOT GX5319 AT calimero DOT vinschen DOT de>
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Brian, ping?

On Oct 22 10:46, Corinna Vinschen wrote:
> Hi Brian,
>=20
> On Oct 22 07:03, Brian Inglis wrote:
> > Brian Inglis <Brian.Inglis <at> SystematicSw.ab.ca> writes:
> >=20
> > >=20
> > > Don Harrop <don <at> effx.us> writes:
> > > > Bash outputs no value when using it's built in method of printing a=
n=20
> > > > "epoch" timestamp.
> > > > BashCommandLine#: printf '%(%s)T' -1
> > >=20
> > > bash printf depends on underlying strftime in newlib, which does not =
support
> > > %s, as it is conditional on _WANT_C99_TIME_FORMATS being defined, and=
 that
> > > is presumably not defined in the config, as %s is not shown in man st=
rftime.=20
> > > Workaround for now is use=20
> > >     date +%s=20
> > > for current time, and=20
> > >    date -d $(printf '%(%T)T' -2) +%s
> > > for shell invocation time.
> >=20
> > > %s, as it is conditional on _WANT_C99_TIME_FORMATS being defined, and=
 that
> > Wrong! Misread the code, strftime %s is not supported!=20
> >=20
> > STC and suggested patch appended (posting from gmane), compiles, but ca=
n't
> > build STC as ld fails with undef refs, and I don't know all the correct
> > LD..., -L and -l incantations. Email me for original files.=20
>=20
> Cool, thanks for the patch.  Unfortunately it doesn't apply cleanly.
> There are several unexpected line wraps and there's this:
>=20
> > --- a/newlib/time/strftime.c        2015-08-20 03:39:24.000000000 -0600
> > +++ b/newlib/time/strftime.c        2015-10-21 20:15:22.367453000 -0600
>=20
> How did this happen?  If you checkout the newlib-cygwin git repo,
> strftime.c is under newlib/libc/time, not under newlib/time :o
>=20
> Would you mind to attach a patch generated with git format-patch?
>=20
>=20
> Thanks in advance,
> Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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