Date: Wed, 22 Jul 2009 22:44:08 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: freebsd-ports@freebsd.org Cc: Scott Bennett <bennett@cs.niu.edu> Subject: Re: needing install OpenOffice.org without messing up perl Message-ID: <4A678828.6020306@infracaninophile.co.uk> In-Reply-To: <444ot4lb22.fsf@be-well.ilk.org> References: <200907221245.n6MCjCOU028926@mp.cs.niu.edu> <444ot4lb22.fsf@be-well.ilk.org>
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Lowell Gilbert wrote:
> Scott Bennett <bennett@cs.niu.edu> writes:
>> Why wouldn't OOo, once installed, simply use whatever were
>> installed as /usr/local/bin/perl?
>=20
> Because perl doesn't tend to be backwards-compatible.
Untrue.
perl as a language is generally very good at backwards compatibility. The=
re is
new syntax available in 5.10, but it's pretty much a superset of 5.8, so =
existing
perl programs should "just work"(tm). In fact, I've not seen any problem=
s on a
swathe of machines I've updated.
{{{
Aside::
The problem comes for applications that embed a perl interpreter. Meanin=
g
they dynamically link against libperl.so. OpenOffice doesn't do this as =
far
as I can tell, but eg. snmpd does:
happy-idiot-talk:~:% ldd /usr/local/sbin/snmpd=20
/usr/local/sbin/snmpd:
libnetsnmpagent.so.16 =3D> /usr/local/lib/libnetsnmpagent.so.16 (=
0x28082000)
libnetsnmphelpers.so.16 =3D> /usr/local/lib/libnetsnmphelpers.so.=
16 (0x280c5000)
libnetsnmpmibs.so.16 =3D> /usr/local/lib/libnetsnmpmibs.so.16 (0x=
280e6000)
libwrap.so.5 =3D> /usr/lib/libwrap.so.5 (0x2819b000)
libnetsnmp.so.16 =3D> /usr/local/lib/libnetsnmp.so.16 (0x281a2000=
)
libcrypto.so.5 =3D> /usr/local/lib/libcrypto.so.5 (0x2824f000)
libelf.so.1 =3D> /usr/lib/libelf.so.1 (0x28397000)
libkvm.so.4 =3D> /lib/libkvm.so.4 (0x283c0000)
libdevstat.so.6 =3D> /lib/libdevstat.so.6 (0x283c8000)
libperl.so =3D> /usr/local/lib/perl5/5.10.0/mach/CORE/libperl.so =
(0x283cd000) <<<<--****
libm.so.5 =3D> /lib/libm.so.5 (0x284fd000)
libcrypt.so.4 =3D> /lib/libcrypt.so.4 (0x28512000)
libutil.so.7 =3D> /lib/libutil.so.7 (0x2852b000)
libc.so.7 =3D> /lib/libc.so.7 (0x28539000)
libz.so.4 =3D> /lib/libz.so.4 (0x2863b000)
libthr.so.3 =3D> /lib/libthr.so.3 (0x2864d000)
That is dependent on the version of perl installed -- not just because th=
e
version number is embedded in the path to the shlib, but also because the=
ABI can change between different versions. In this case, you would have =
no
alternative but to recompile the app to link against a different version =
of
perl.
}}}
One way to fix the problem of dragging in an unwanted version of perl whe=
n
using precompiled packages for OpenOffice is to do the following:
0) I'm assuming perl-5.10 is already installed
i) Download the openoffice package you want to install.
# setenv PKG_SITES 'ftp.freebsd.org other.site.org third.site.org'
# pkg_fetch openoffice.org-3.1.0_2
ii) Install all required dependencies for OpenOffice /except/ for
perl-5.8 for the package you downloaded:
# pkg_info -qr ./openoffice.org-3.1.0_2.tbz | grep -v perl | \
cut -d ' ' -f 2 | xargs portinstall=20
iii) Install the OpenOffice package without dependencies:
# pkg_add -i ./openoffice.org-3.1.0_2.tbz
iv) Use pkgdb to fix the dependency linkages:
# pkgdb -F
=20
(when prompted, substitute perl-5.10 instead of the missing perl-=
5.8
dependency)=20
However, this is quite an inelegant approach which involves spending far =
too
much effort (It's also untested by me and quite possibly won't work at al=
l...).
You'ld have to do the same thing all over again if ever you need to upgra=
de
OpenOffice. Chances are some of the dependencies you install at stage (i=
i)
will have been updated in ports after the openoffice.org package was buil=
t:
this should do no more than cause some warning messages and maybe make yo=
u do
a bit more work at stage (iv). Or it could just make everything break ho=
rribly.
Note: this *won't* work in the general case -- it relies on perl scripts =
being
compatible across different versions. Using this approach to make arbitr=
ary
substitutions in the dependencies of a package will almost certainly end =
in
tears before bedtime.
Cheers,
Matthew
--=20
Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard
Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
Kent, CT11 9PW
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