Date: Wed, 31 Mar 1999 11:06:48 +0100 From: nclayton@lehman.com To: ports@freebsd.org Subject: Explicit version checks in dependencies Message-ID: <19990331110648.G14492@lehman.com>
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Hi porters,
[ Please cc: replies to me, I'm not on the list ]
I maintain the textproc/docproj port. This is a meta-port to include all
the programs required by the FreeBSD documentation project (similar to
the KDE port).
At the moment I use normal dependencies to verify that various executables
and other files have been installed. This works (after a fashion) but
has problems.
For example, there are several versions of TeX that the user could have
installed prior to installing this port. Only one of them (teTeX-beta)
will work, but it's very difficult to tell an installation of teTeX-beta
apart from any other install of TeX. Simply checking for a
/usr/local/bin/tex executable isn't sufficient.
Or the textproc/dsssl-docbook-modular port, which installs files in to
/usr/local/share/sgml/docbook/dsssl/modular/*. Different versions of this
port are very similar, so simply checking for the existance of a file
isn't enough.
Ideally, I'd like to be able to check for whether a port's been installed,
and the version number that was installed as well.
I think I can do this by specifying dependencies on directories in
/var/db/pkg, something like;
BUILD_DEPENDS= /var/db/pkg/teTeX-981113/:${PORTSDIR}/print/teTeX-beta\
/var/db/pkg/jade-1.2.1:${PORTSDIR}/textproc/jade\
/var/db/pkg/tidy-99.2.12:${PORTSDIR}/www/tidy
and so on.
That'll work, but is inflexible. If Jade is upgraded to version 1.2.2
for example, these dependencies will fail.
In an ideal world there'd be a way to specify the minimum version number
required, possibly with a warning if a newer version of the port exists.
Something like;
# cd /usr/ports/textproc/docproj
# make dep-check
Checking teTeX-981113 (print/teTeX-beta): Found
Checking tidy-99.2.12 (www/tidy): Found
Checking jade-1.2.1 (textproc/jade): Found 1.2.2 (should be OK)
Is this sort of functionality already in the ports system somewhere, and I
just haven't seen it?
N
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