* another specs language question
@ 2005-05-11 8:10 gumbold
2005-05-14 20:06 ` Arturas Moskvinas
0 siblings, 1 reply; 3+ messages in thread
From: gumbold @ 2005-05-11 8:10 UTC (permalink / raw)
To: gcc-help
i want to use path which starts with user home `~'.
how to do it?
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: another specs language question
2005-05-11 8:10 another specs language question gumbold
@ 2005-05-14 20:06 ` Arturas Moskvinas
2005-05-16 15:54 ` Nix
0 siblings, 1 reply; 3+ messages in thread
From: Arturas Moskvinas @ 2005-05-14 20:06 UTC (permalink / raw)
To: gumbold; +Cc: gcc-help
> i want to use path which starts with user home `~'.
> how to do it?
There is global variable PATH in *nix (at least linix), so you can
change it to your likings.
$PATH
will print current path, and
PATH=....
By writing this you can change path
Arturas Moskvinas
P.S.: the best thing to do is to use chroot.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: another specs language question
2005-05-14 20:06 ` Arturas Moskvinas
@ 2005-05-16 15:54 ` Nix
0 siblings, 0 replies; 3+ messages in thread
From: Nix @ 2005-05-16 15:54 UTC (permalink / raw)
To: Arturas Moskvinas; +Cc: gumbold, gcc-help
On 14 May 2005, Arturas Moskvinas stipulated:
>> i want to use path which starts with user home `~'.
>> how to do it?
>
> There is global variable PATH in *nix (at least linix), so you can
> change it to your likings.
I don't think that has anything to do with the question. (And $PATH is
not a global variable; it's an environment variable, which is a quite
different entity and not `global' in any meaningful sense; it's
per-process. It's been present in Unix pretty much forever: I can't say
how long because it's probably older than I am.)
gumbold, do you mean that you want to use a path in a specs file which
is relative to a user's home directory, or that you want GCC to look for
its specs file somewhere underneath a user's home directory?
The latter is trivial: `gcc -specs=${HOME}/somewhere/....' and the shell
does the work of variable expansion before GCC ever gets involved.
For the former, I think you're stuck: there is no mechanism in the specs
language to substitute environment variables (although adding one to GCC
wouldn't be hard). The closest you can get without adding such a
mechanism is a wrapper around GCC which preprocesses a pre-specs file,
substituting some variables, and then runs the GCC driver with the
-specs= argument on the resulting file.
I'd think it would probably be easier to add the feature to GCC: if
you're modifying the specs file, you can probably do that too (and
submit the patch :) )
--
`End users are just test loads for verifying that the system works, kind of
like resistors in an electrical circuit.' - Kaz Kylheku in c.o.l.d.s
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2005-05-11 8:10 another specs language question gumbold
2005-05-14 20:06 ` Arturas Moskvinas
2005-05-16 15:54 ` Nix
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