Difference between "Look at" and "Run" in !Boot.Boot

Good evening,

as far as i understand – please correct me if i’m wrong – the difference is:

- “Look at” runs the !Boot Obey of the Application
- “Run” runs the !Run Obey of the Application

I ask because i currently set up GCC including UnixLib and OSLib and get the following error message when setting up UnixLib during boot with “Look at”:

<UnixLib$Dir>.!Sprites not found

Using the “Run” method, it works. But as the !Boot and !Run almost look identical, i wonder if my assumptions about “Look at” and “Run” are wrong in the first place.

Yours,
Egon

You are correct, “Look at” runs the !Boot Obey of the Application, "Run” runs the !Run Obey of the Application.

“Run” runs the Application’s !Boot then it’s !Run, to simulate what happens when run from a filer window. This is because !Boot may set up some stuff that !Run doesn’t.

Thank you very much!

Anyone has an idea, why UnixLib fails to initialize during boot when run from “Look at”, but not from “Run”?

!Boot:

If "<UnixLib$Dir>" = "" Then Set UnixLib$Dir <Obey$Dir>
If "<UnixLib$Dir>" = "<Obey$Dir>" Then Set UnixLib$Path <Obey$Dir>.,<Obey$Dir>.include.
If "<UnixLib$Dir>" = "<Obey$Dir>" Then Set UnixLib$Help <Obey$Dir>.!Help
IconSprites <UnixLib$Dir>.!Sprites

!Run:

Set UnixLib$Dir <Obey$Dir>
Set UnixLib$Path <Obey$Dir>.,<Obey$Dir>.include.
Set UnixLib$Help <Obey$Dir>.!Help
IconSprites <UnixLib$Dir>.!Sprites

With UnixLib downloaded from PackMan ‘Look at’ works without error here with RISC OS 5 06-Feb-22. The iconsprites command has worked as tested by creating a new directory called !UnixLib.

It is not at all obvious what may be going wrong here.

The only thing I can think of is that something else is setting UnixLib$Dir to a directory that doesn’t contain !Sprites. Perhaps try an Echo <UnixLib$Dir> when the error occurs and see where it’s set to.

The UnixLib on PackMan is from long long ago, all it contains is SharedUnixLibrary 1.10 (10 Apr 2006). The up to date SharedUnixLibrary 1.16 is in PackMan under that name. (It looks to be incorrectly wrapped, it is not in a dummy !System directory.) GCC on PackMan does contain, a correctly wrapped in a dummy !System, SharedUnixLibrary 1.16.

Even so UnixLib should not break as described.