Get CompilerException when trying to load sysfs impl ns

[metasoarous]

I get the following:

user=> (require 'clj-bots.gpio.impl.sysfs)

CompilerException java.lang.RuntimeException: Unable to resolve symbol: when-err in this context, compiling:(net/n01se/clojure_jna/libc_utils.clj:58:5) 

Any idea what this might be related to? I'm wondering if this is what's keeping bonejure from compiling (it's complaining about not finding the impl.sysfs ns).

[zeroem]

Not certain, I'll look into it tonight. Do you have libjna installed? It's required to use JNA.

[zeroem]

Found the issue, there is definitely an error in the library, when-err is used without being imported or referred, See:

https://github.com/Chouser/clojure-jna/blob/master/src/net/n01se/clojure_jna/libc_utils.clj

[zeroem]

AAAAnd there's already a PR to fix it: Chouser/clojure-jna#7

[metasoarous]

Ah! Lovely. I actually didn't have jna installed... We'll have to make sure the project still loads and operates in non-JNA/sysfs mode if the user hasn't installed JNA. Again, looking at core.matrix may be instructive here, as one of the matrix implementations requires BLAS, though core.matrix operates fine without it given you stick to the other implementations.