<v0idify>
i would leave it even if it's outdated for people who might come with some zig code that's older and applies to it, i think it's an important page to have
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<karrick>
Has anyone built Zig compiler using MacPorts before?
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<karrick>
in other words, by using something along the lines of `cmake .. -DCMAKE_PREFIX_PATH=/opt/local -DCMAKE_PROGRAM_PATH=/opt/local/libexec`
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<karrick>
Never mind. I am making progress, so I am on the right path.
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<andrewrk>
chances looking good I'll get zig building again in ast-memory-layout branch tonight
<andrewrk>
after that, remaining tasks are: fix whatever regressions happened, fix remaining zig fmt test cases, and get vexu's translate-c branch landed (#7479)
<g-w1>
oh nice you factored all the builtin boilerplate out.
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<andrewrk>
it's cool that this non-master branch has 4 contributors in it other than me
<andrewrk>
really appreciate the group effort here
<karrick>
How many folks here build zig compiler on Mac? I tried using MacPorts' version of LLVM, Clang, but running into build issues because libraries and headers do not have matching paths in the Findclang.cmake and friends. I am now just going to skip MacPorts and just build the entire LLVM, Clang myself...
<andrewrk>
karrick, last I checked it worked fine with llvm, clang, lld from homebrew
<andrewrk>
building them from source yourself is always an option though
<karrick>
Thanks; if plan B does not work, I have a plan C in standby
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<mikdusan1>
what macos version?
<karrick>
Big Sur 11.2.1
<mikdusan1>
arm64 ?
<karrick>
I used to MacPorts back when Darwin first came out in early 2000s, but switched to home brew a number of years ago when they had newer ports. Decided to give MacPorts another try actually earlier today, and decided to give building Zig a whirl using it.
<karrick>
No, I'm on a 2.4 GHz 8-Core Intel Core i9 with 32 GiB. This is going to take a while...
<karrick>
Are you building on the newer M1 chip?
<andrewrk>
about an hour, usually
<mikdusan1>
fyi today macports has `clang-11` and `llvm-11` which are based on 11.0.1 sources. But careful, macports may decide to bump to 11.1.0. I don't know what their policy is on that.
<karrick>
Hm, I am actually building against llvm-11 on HEAD... So maybe this is just a test run and won't work...
<mikdusan1>
if building from llvm-project sources use tag llvmorg-11.0.1 ; zig's next _planned_ bump will be llvmorg-12.0.0 . don't use any changing branches
<mikdusan1>
s/changing/tracking/
<karrick>
thanks
<mikdusan1>
if you hit a snag, I just put up some bins for another dev, and look at the 01-command_line_log.sh, I captured all the "exec" done from my build script,
<mikdusan1>
and the main goal of building this way was to NOT use macports or brew. basically all that should be needed is xcode, a cmake binary, llvm-project
<karrick>
just saw your google drive link. Taking a look...
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<karrick>
So is this a sub-project effort of Zig to minimize build time dependencies? I'm wondering whether porting to openbsd would be feasible? I'm sure the compiler can be easily ported, but the real work is upgrading the Zig standard library to work with OpenBSD-isms...
<mikdusan1>
I am unsure of what "sub-project" is?
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<karrick>
I don't have a formal definition of "sub-project." Just wondering whether this is a concerted effort to reduce the build time dependencies for easier porting.
<karrick>
Are you capturing your build scripts in a github repos?
<karrick>
Or just in this shared directory structure with output blobs?
<mikdusan>
if I get your meaning, then not really. Any platform needs to supply those deps. Sometimes people work together and share those deps amongst themselves.
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<braket>
lmao, randomly seeing a u29 just chilling as some parameter's type in stdlib has got to be one of the funniest thing I've ever seen.. Zig is just too cool lol
<karrick>
gotta save those extra bits for when you might need them... ;)
<mikdusan>
zig already has `zig-bootstrap` repo. but yeah, my custom scripts are git'd
<karrick>
ooh, I need to take a look at zig-bootstrap. Thank you!
<daurnimator>
braket: u29 is used for alignment, because that's what LLVM does. though IMO it doesn't make sense
<daurnimator>
there are CPUs that exist with higher alignment requirements
<braket>
ahh i see. but what a random number 29 is though; like it just *looks* random lol
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<andrewrk>
woot, got zig building finally in the ast-memory-layout branch
<andrewrk>
I wonder how many regressions there are
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<zags>
what's the idiomatic "pointer to anything, I'll cast you later" in zig? I have a rare instance of needing the equivalent of void*
<ifreund>
zags: probably [*]u8
<ifreund>
be careful about alignment of course
<zags>
Well, this is a field that holds pointer to anything. What it is, is encoded elsewhere. So when I set the field, I'll ptrcast something that's correctly aligned already, no?
<zags>
Same when casting back, wouldn't the alignment be correct?
<ifreund>
indeed
<zags>
wait, maybe usize is the right thing? That's what @frameAddress, etc returns
<ifreund>
oh yeah usize is also a good choice
<zags>
alright, thanks (again!)
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<ifreund>
[*]u8 is more if you want to slice it
<zags>
ah right
<ifreund>
usize is what I translate user_data void pointers to for zig-wlroots
<ifreund>
(well, the ones I can't nicely abstract over that is)
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<v0idify>
is there a helper to read until a character/newline and alloc for File?
<dutchie>
io.Reader.readUntilDelimiterAlloc
<v0idify>
yeah sorry i just realized
<dutchie>
dw
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<v0idify>
i'm still getting EOF after seeking when reading a file, what should I do?
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* plumm
does a backflip
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<leroycep>
v0idify: could you use `readUntilDelimiterOrEofAlloc`?
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<andrewrk>
wow, brilliant, vexu already has all the translate-c tests passing in ast-memory-layout branch
<ifreund>
very nice :)
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<ifreund>
andrewrk: I'm working on the trailing doc comment fixup by the way (though half of me thinks they should be a compile error, I saw you added explict support in the parser)
<andrewrk>
by trailing, you mean same-line ones?
<ifreund>
yeah
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<ifreund>
they zig fmt tests want to move them before the decls
<andrewrk>
hmmm. making them a parse error sounds like a reasonable proposal
<andrewrk>
allowing them prompts a few questions, such as, how should generated docs represent it when there are doc comments before as well as same line
<andrewrk>
it might be really nice to do same-line doc comments for parameters though
<ifreund>
I don't think we support them for parameters
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<ifreund>
only for var decls and struct fields
<ifreund>
search for parseAppendedDocComment() in parse.zig
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<andrewrk>
ah I see
<ifreund>
or nevermind, we don't support them on struct fields yet post-rework
<ifreund>
we do support them after extern function decls though :D
<ifreund>
I'd be happy to remove all support, though I don't want to make functional changes from master without the go-ahead from you
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<andrewrk>
go ahead and make same-line doc comments parse errors
<ifreund>
:)
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<noam>
ifreund, andrewrk: are same-line non-doc comments okay? Or should those error too?
<noam>
I feel like for consistency prohibiting both on the same line makes sense
<noam>
It also removes abiguity...
<ikskuh>
what ambiguity?
<ifreund>
noam: I see no reason to disallow those
<ifreund>
they are very useful
<noam>
Ah, hm. I take that back; ambiguity is only a problem for doc comments
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<ifreund>
zig fmt is getting pretty close. Main things left are proper handling of comma separated lists (e.g. wrapping and inserting a trailing comma if line comments are present) and the newish feature allowing columns in list literals
<ifreund>
other than those two features I think it's just bugfixes for what we already have implemented
<ifreund>
off to bed now though
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<andrewrk>
good night!
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<v0idify>
i love how this channel is a mix of "user-land" stuff and compiler stuff
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<v0idify>
how can i compile stage2 with <6GB RAM?
<andrewrk>
v0idify, that's something we're working towards, but not capable of yet
<andrewrk>
we're using lots of ram as a crutch to get the language done faster
<v0idify>
andrewrk, does building stage2 with stage2 take less RAM?
<andrewrk>
rest assured there are significant efforts underway towards better resource utilization
<v0idify>
\o/
<andrewrk>
stage2 can't build stage2 yet, but, yes it is significantly improved both in terms of perf and ram