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Date:      Thu, 10 Jul 2014 01:25:36 +0200
From:      Baptiste Daroussin <bapt@freebsd.org>
To:        Adrian Chadd <adrian@freebsd.org>
Cc:        "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, Pedro Giffuni <pfg@freebsd.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>
Subject:   Re: svn commit: r268461 - in head: . gnu/lib/libreadline gnu/lib/libreadline/history gnu/lib/libreadline/readline gnu/lib/libreadline/readline/doc gnu/usr.bin/gdb gnu/usr.bin/gdb/gdb gnu/usr.bin/gdb/gd...
Message-ID:  <20140709232536.GF56040@ivaldir.etoilebsd.net>
In-Reply-To: <CAJ-Vmo=kLQ27km1hRcwFsinmBMA=UVWcZyw5gBLJ-V1UvQPuOw@mail.gmail.com>
References:  <201407091552.s69FqUon070685@svn.freebsd.org> <53BD68E4.1070706@freebsd.org> <CAJ-VmonsZzATyWC9g-pxaQ_qDSvOh-jbiWhY=92vgmovqvn-BQ@mail.gmail.com> <20140709172305.GD56040@ivaldir.etoilebsd.net> <CAJ-Vmo=kLQ27km1hRcwFsinmBMA=UVWcZyw5gBLJ-V1UvQPuOw@mail.gmail.com>

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On Wed, Jul 09, 2014 at 11:05:29AM -0700, Adrian Chadd wrote:
> On 9 July 2014 10:23, Baptiste Daroussin <bapt@freebsd.org> wrote:
> > On Wed, Jul 09, 2014 at 10:12:27AM -0700, Adrian Chadd wrote:
> >> Hi,
> >>
> >> By doing this you're actually making more work for the really embedded
> >> people who have size constraints on things.
> >>
> >> I dislike privatelib but it at least allows for code sharing where
> >> before people would just statically link things into binaries.
> >
> > do you install gdb on your embedded environnement? because that is the =
only
> > user of libreadline.
>=20
> See below.
>=20
> >>
> >> I've had to actively undo this kind of dumb before in order to get
> >> things to fit on very small flash root filesystems.
> >>
> >> Shared libraries are good. Please stop assuming we have lots of disk
> >> space and RAM to have duplicates of things floating around.
> >
> > Facts:
> > Before
> > gdb + kgdb + gdbtui + libreadline.so.8 + libhistory.so.8 =3D 8976 k
> > After
> > gdb + kgdb + gdbtui =3D 8973 k
> >
> > I don't think I have damaged too much your embedded system am I wrong?
> >
> > Do I miss something?
> >
> > (Yes I have checked that before turning into an internallib given my fi=
rst
> > approach was to turn into a privatelib.
>=20
> Sure, except for the people who have done things like rolled local
> configuration/management telnet interfaces for these things. They're
> also using libreadline (and things like the cisco UI library.)
>=20
> And yeah, I do install gdb in there from time to time. Code sometimes
> needs debugging. :-)
>=20
They can in that case use libedit which exports a libreadline compatibility
interface in the base system (it is working well with the known cisco-like =
UI
things ;) so even in that case I save them space given libedit is required =
for
/bin/sh (the only known problem can happen if the are using unicode and fro=
m my
last test the cisco UI thing is not unicode friendly either so that should =
make
no difference here for them).

The other thing is there are a couple of ABI incompatibilities between the
libreadline version we have in base and newer libreadline which is getting =
more
and more use making it more complicated to manage ports that requires newer
readline.

regards,
Bapt

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