Bug#232028: Support for a common place for additional units? (forwarded from Torsten Knodt)
Matthias Klose wrote:
> This report was submitted to the Debian bug tracking system. Is this
> something generally useful?
>
> I have packaged grx, the Graph unit emulation for debian.
> I have sent a preliminary diff to the authors.
Fine, thanks.
> But the integration into gpc
> needs some support to make it easily useable. The problem is, that there is no
> common place where to put unit sources, which get recompiled by the installed
> gpc compilers on updates. I would suggest to add a directory like
> /usr/share/gpc/units, where all packages can put their unit source files and
> a e.g. update-gpc-units script which gets called by every package which
> installs a new unit. Currently the users have to symlink the unit source
> files into their project directory and compile them themselves.
It can be done a little easier. With
`--unit-path=/usr/share/gpc/units --automake' GPC will find the
units without symlinks and (re-)compile them when necessary.
If all system-wide units are installed in the same directory, this
will be a one-time setting (so no update-gpc-units needed so far).
For now, it can be done, e.g., as a wrapper script for GPC or an
alias etc. In the future, a utility (gp) that will come with GPC
will also support setting default options.
> They also have
> to give the needed library pathes of those units themselves.
Yes, that can be a problem, but what's your suggested solution? Of
course, if all (relevant) libraries are installed in a few standard
places, the corresponding `-L' (and possibly `-Wl,-R') options can
be set globally as said before. Otherwise, I think, there must be a
way when installing a library to determine the necessary library
paths (and other necessary options, e.g. also include paths if the
units use C wrappers -- not necessary for GRX, but for a number of
other libraries) and add them to the global options (which would
then be stored somewhere in /etc I guess). I suppose this would be a
job for the package maintainers ...
Frank
--
Frank Heckenbach, frank@g-n-u.de, http://fjf.gnu.de/, 7977168E
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