macOS Sonoma Linker Issue

[Renato]

On Friday, 22 December 2023 at 17:50:47 UTC, Johan wrote:
> Some general advice:
>
> 1 - use `dub` from LDC's package (this may solve some arm64 vs 
> x86 issues when on Apple Silicon CPU)
> 2 - when you use a new or different compiler, you have to 
> rebuild _all_ packages. So clear your dub cache.
>
> I think point 2 is causing your issues.
>
> -Johan

Hi again, I hate to repeat myself, but the linker issues on MacOS 
keep happening, even after using this in the dub recipe:

```
lflags "-ld_classic"
```

Even though this helps, every now and then I am faced with a 
horrible error like this (happened on multiple projects):

```
ld: warning: pointer not aligned at address 0x10017FA3A ('anon' + 
115 from 
../../../.dub/cache/prettyprint/1.0.9/build/library-unittest-zRys5rzGP6krRGvFrhQ1nw/libprettyprint.a(primitives_64_42b.o))
ld: warning: pointer not aligned at address 0x10017FACD ('anon' + 
115 from 
../../../.dub/cache/prettyprint/1.0.9/build/library-unittest-zRys5rzGP6krRGvFrhQ1nw/libprettyprint.a(primitives_65_55a.o))

.... hundreds of lines just like this


ld: warning: pointer not aligned at address 0x100199171 ('anon' + 
117 from 
../../../.dub/cache/tested/0.9.5/build/library-unittest-GNkuLeNnFlMZmRhvBdmNgA/libtested.a(lifetime_2ae_75b.o))
ld: unaligned pointer(s) for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to 
see invocation)
Error: linker exited with status 1
Error /Users/renato/dlang/dmd-2.106.1/osx/bin/dmd failed with 
exit code 1.
```

It doesn't matter if I use LDC or DMD. Both cause the same error.

I've tried cleaning the DUB cache like this:

```
rm -rf ~/.dub/cache
```

But it doesn't help.

It's very frustrating because I'm close to finishing my project, 
but this kind of random error really delays me... it seems that 
as I keep changing code, the linker eventually starts working 
again! I must be hitting some "bad path" in the compiler.

So, if anyone who understands about linking on MacOS could have a 
look, here's a commit on the project I'm currently working on 
which shows this problem:

https://github.com/renatoathaydes/dzipper/commit/54d1f90f18a17d87d71195df68d02089ca4cf27c

If you checkout this commit, just run `dub test` and you should 
see the problem on MacOS Sonoma.

Notice that the current state of my code is "in progress" so some 
stuff may not even be working properly yet, the tests may not 
even be passing, that's fine (if I only I could run the tests)... 
but as the error is on the linker, I believe it's compiling 
properly and there should never be any linker errors like this.