Re: Failure to build zig-HEAD on -current aarch64

[ci4ic4 <ci4ic4%proton.me@localhost>]

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On Wednesday, 18 February 2026 at 10:14 PM, Thomas Klausner <wiz%gatalith.at@localhost> wrote:

> On Wed, Feb 18, 2026 at 04:08:58PM +0100, ci4ic4 wrote:
> > I build zig from time to time on -current, both on amd64 and aarch64. Lately, my aarch64 builds do not complete - the second stage compiler zig2    is in parked state, not doing anything (obviously). There appears on resource shortage of any kind. This is on today's -current. The same zig version on the same NetBSD-current on amd64 builds just fine (on a smaller VM). The traces are as follows:
> 
> I have no particular idea about the trace, but I posted an llvm update
> to tech-pkg mailing list which includes a zig update. You could try if
> the problem persists in that version.

It won't help me much - my llvm version is now 21.1.8... 

I noticed that llvm on my aarch64 box was a bit older than on my amd64 one; 21.1.5 vs. 21.1.8, so I built 21.1.8 on aarch64 and tried again - to no avail. Your patch ups llvm to 20.1.8, which is too old for the (codeberg) HEAD zig version, which I build. My llvm/clang/lld builds are from wip, I build zig following the standard procedure suggested, which usually works on -current, but breaks from time to time; if I decide that the reason is in some bitrot in the bsd support in zig, I may submit an issue there, which is usually dealt with reasonably fast. In this particular occasion I am stumped by the fact that I have identical NetBSD versions (clean build scripts after a cvs update) and identical llvm versions, and the result is different - failure on aarch64. 

After an initial checkout from https://codeberg.org/ziglang/zig, it is:

mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release -GNinja .. 
ninja install 

I just keep  ${HOME}/src/zig/build/stage3/bin/ in the PATH to test and try it. Also, before a rebuild, I always 

rm -r .zig-cache/* ~/.cache/zig/* build 

while in the top zig directory. 

>  Thomas
> 


Chavdar