Re: /lib/cpp not found in c-mode

[Nick Roberts]

 > You'd be better served postponing execution of such a command to the moment
 > when it's actually needed (i.e. when gud-tooltips are actually being used).
 > If the user gets an error when she uses gud-tooltips, he won't mind, but if
 > she gets the error about something that she won't even ever use, she has
 > reasons to be upset.

I've moved it closer to this: the define lists are only generated in a debug
session. To do this only when gud-tooltips are being used means that the list
generation etc needs to be triggered when tooltip-gud-tips-p is set to t and
the local variable gdb-define-alist killed etc when it's set to nil. Perhaps
tooltip-gud-tips-p should be replaced with some kind of minor mode.

Any ideas?

Nick