Re: [MP-d] Alternative to `SK_HOME'

[Stefan M. <me...@df...>]

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Hi!

3 days ago Stefan Merten wrote:
> I'm wondering about a good alernative to `SK_HOME'.
...

My final conclusion was to have an uniform method consisting of two
steps:

* In general the pointer to the root of the system tree is a parameter
  to the `SmartKom' / `Multiplatform' script.

  This parameter would be given by an option. I think `-h'/`--home'
  is a good idea.

* The `SmartKom' / `Multiplatform' script sets environment variable
  `MP_HOME' so all subsequent processes inherit this value treating it
  as a constant pointing to the rich structure system tree.

  Any process needing access to the system tree can obtain it by the
  environment variable then. This needs no changes in existing
  software (beyond `SK'/`MP' changes).

  Of course the environment is modified by `SmartKom' /
  `Multiplatform' according to `local/SmartKom.env' /
  `local/Multiplatform.env' as usual.

As an alternative `MP_HOME' might be set in the environment. However,
I think a warning suggesting use of the respective option is a good
idea.

This allows for things like

	alias SmartKom 'Multiplatform --home $SK_HOME'

> Also we need to know which operations are actually affected by
> `SK_HOME'. Of course running a Multiplatform based system is strongly
> affected by `SK_HOME'. The other main operation which comes to mind is
> running `make'. Are there any more? Ah - debugging is an additional
> case. Some of the debugging tools need to run in the (correct)
> Multiplatform environment. Anything else?

Does anything else come to mind? In particular: Does any operation
come to mind where the concept outlined above may not work? What about
Windows?

I'll start changing `SK'/`MP' `smartkom'/`multiplatform' now in all
existing packages.


						Gr=FC=DFe

						Stefan

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