Date: Tue, 12 Jul 2005 13:09:10 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: vova@fbsd.ru Cc: freebsd-emulation@freebsd.org Subject: Re: Linking linux libs Message-ID: <20050712130910.13936e1d@Magellan.Leidinger.net> In-Reply-To: <1121115461.1043.3.camel@localhost> References: <000701c58643$71f3a190$6401a8c0@HomePC> <20050711183241.GH5116@dan.emsphone.com> <1121115461.1043.3.camel@localhost>
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On Tue, 12 Jul 2005 00:57:41 +0400
Vladimir Grebenschikov <vova@fbsd.ru> wrote:
> __ ____, 11/07/2005 __ 13:32 -0500, Dan Nelson __________:
> > In the last episode (Jul 11), Jim Bodkikns (Dakotacom) said:
> > > A linux emulation question.
> > >=20
> > > I suspect I know the answer to this, but what about linking to
> > > vendor supplied linux libs? (A vendor product that is provided in the
> > > form of libraries that are linked into your apps).
> >=20
> > As long as you compile and link using linux gcc and ld to generate a
> > Linux executable, it'll work. Don't try and link a Linux library into
> > a FreeBSD executable, though, unless the ABI is very simple. For
> > example, a standalone crypto module that takes a buffer and a key would
> > probably work; anything that tries to do any stdio or call libc
> > functions that pass structures won't.
>=20
> I have know examples of more complex magic on linking big database linux
> static library into FreeBSD applications, but it was like black magic
> with lot of libc compatibility hacks.
www/linuxpluginwrapper does something like this. It does it at run-
time, not at (static-)link-time.
You can also do a little bit of magic (like renaming symbols) with the
proprietary object code, like in the lang/icc port.
For short: you "just" have to provide the missing symbols at link-time.
Bye,
Alexander.
--=20
Secret hacker rule #11: hackers read manuals.
http://www.Leidinger.net Alexander @ Leidinger.net
GPG fingerprint =3D C518 BC70 E67F 143F BE91 3365 79E2 9C60 B006 3FE7
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