Michael Sterrett writes:
> How can I produce the functionality of the perl function join() in gmake.
Use the join function.
> I have a list of directories:
>
> A = /usr/bin /bin
>
> and I want this:
>
> A = /usr/bin:/bin
>
> Something like this I thought would work in gmake, but doesn't seem to:
>
> A := $(subst ,:,$(A))
This is a different question, relating to whitespace. Make ignores
whitespace before the argument, so it thinks you are trying to replace
nothing (an empty argument) with ":".
You have to do this (this is described somewhere in the make manual,
but it's not convenient for me to look it up just at the moment):
E := # empty variable
S := $(E) # variable containing one space
A := $(subst $(S),:,$(A))
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