<Schwarzbaer>
I just installed the ponyc deb, cloned the ponyc repo, and tried to build ponyc/examples/net: http://dpaste.com/1YM8STS
<Schwarzbaer>
For that matter, the output from trying to compile hello world looks quite similar.
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<Schwarzbaer>
A little googling later, using "ponyc --pic" solves the problem, though I have *no* idea what I'm doing...
<Schwarzbaer>
Some problems do persist on the networking example, though, with regard to undefined references: http://dpaste.com/3E0MMH0
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<endformationage>
koczurekk: If you read the logs... It sounds like you may be attempting to receive a struct by value, in which case Pony's FFI does not (yet?) support this. You might find the ffi-struct example useful:
<endformationage>
Schwarzbaer: Huh, looks like it can't find your system's SSL libs.
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<Schwarzbaer>
Sooo, trying to compile ponyc/examples/net on a Debian with a ponyc version 0.21.2-63911b5 installed from .deb via apt still results in http://dpaste.com/3E0MMH0 despite libssl-dev being installed. Assuming that libssl can't be found, where do I find out where ponyc is looking? Assuming that that's not the problem, how do I proceed?
<codec1>
Hi, I am no Linux expert but isn't the last line the call to gcc which give the search path for the libraries ?
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<codec1>
by the way, which version of Debian are you using ?
<Schwarzbaer>
stretch, I think. Whatever that may be; TBH I hate code names like that.
<Schwarzbaer>
If that's indeed the problem, then someone needs to update the ponyc package based on Debian's propensity to play "Hide the library", because all that's in /usr/local/lib/ is Python.
<Schwarzbaer>
Yeah, all three. libssl, librt, libcrypto.
<Schwarzbaer>
So, the brutal approach would be to just symlink the .sos in /usr/local/lib/. The maybe-helpful-one would be to file an issue against ponyc.
<codec1>
did you try it ?
<Schwarzbaer>
Not yet, you *just* pointed me in the right direction. :)
<Schwarzbaer>
Will try after discussing dinner with my flatmate.
<codec1>
From my experience on Windows, link error are because: 1) someone forget to add the command line option to link with a library 2) the linker can't find the library file 3) They are missing functions in the library
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<codec1>
Usually on windows the linker complains and abort it works when it can't find a specified library which result in a different message than one with missing options or symbols
<codec1>
but since the command line appear to tell the linker to link with "ssl" I would expect it to say it didn't find the library it were the case
<codec1>
but maybe it just the way gcc works
<Schwarzbaer>
Huh, that's interesting, creating those symlinks did indeed not do anything.
<codec1>
maybe you could check if there is those functions in the library
<Schwarzbaer>
That's *quite* the rabbit hole you're sending me down. :D
<codec1>
well I think it's pretty easy on linux
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<codec1>
the web either say nm, objdump or readelf
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<dave24>
Should I just use a normal String type to represent a UTF8 string?
<aturley>
dave24 that's your best bet. the String type doesn't specify an encoding.
<dave24>
Yes, I read that in the file and thought perhaps there is something else. But thats fine then; Thanks!
<dave24>
It sort of need to specify an encoding one would think, because of things like reversing a string.
<aturley>
yeah, if you look at the reverse method there's actually a comment about that.
<aturley>
strings are one of the areas that we've had lots of discussion around.
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<koczurekk>
Hi again! :) How do you deal with C structs containing enums?
<Praetonus>
Hello koczurekk. Do you have an example of what you'd like to do?
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<koczurekk>
There's a C struct with several enums and I have to reproduce it in Pony (and then pass a pointer to it around).
<koczurekk>
I can write an example code if you want.
<koczurekk>
The thing is that there's some function fill(SomeStruct*) and I don't know how an equivalent of this SomeStruct should look like in Pony.
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<vaninwagen>
Schwarzbaer, which version of openssl or libssl-dev did you install on your debian machine?
<jemc>
koczurekk: the usual way is to treat the enums as `I32` in pony, and wrap with pony code that knows the meanings of the magic numbers associated with the enum
<vaninwagen>
the gist is that openssl >= 1.1.0 is currently not supported
<vaninwagen>
but there is already one possible solution ready as PR and we are heavily discussing this
<koczurekk>
Thanks a lot, @jemc.
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<Schwarzbaer>
So... "Sit back and wait for the merge"?
<Schwarzbaer>
Or rather "Until merge, go play with everything else in Pony other than SSL"? Because I can totally do that, I definitely don't need SSL right now. ^^ Not until in... Well, between a few months and a few years, I guess.
<Schwarzbaer>
(Actually, copypasting the net example and ripping out everything SSL-related is probably even a good exercise in reading code.)
<vaninwagen>
Schwarzbaer, yeah, sit back and ejoy the show :)
<vaninwagen>
*enjoy
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