On Sun, May 28, 2006 at 12:31:14PM +0200, felix winkelmann wrote: > > Adding a quote in front of the define doesn't work either as that expands > > to (quote (define with-x #t)) > > Try "'...'" (one pair of double-quotes for scheme, and one pair of single > quotes for the shell).
It would be nice if you could document this in the manual. > > How does this work, then? (also, can I use cond-expand with this? I'm not > > sure how to add features cond-expand can check against) > > As Kon replied: register-feature! is the way. But that is at run-time, > of course. > To have it available at compile-time (I'm not 100% sure in what way you > want to use this), things are (as usual) a tiny little bit more complicated. Could you elaborate on how to do it? I though cond-expand was compile-time. I guess I was wrong :) Anyway, what I want to do: I have a definition for a C function that only exists if Imlib2 is compiled without X. So, if X is not found, I don't want a binding for that function. I guess this has to be done compile time, since the function doesn't even exist, meaning the (foreign-lambda ...) can't be translated. I hope I am making some sense here. Regards, Peter -- http://sjamaan.ath.cx -- "The process of preparing programs for a digital computer is especially attractive, not only because it can be economically and scientifically rewarding, but also because it can be an aesthetic experience much like composing poetry or music." -- Donald Knuth
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