[llvm-dev] Can't build lld on BigSur (due to lack of dylibs under /usr/lib/ ) ?

[Vy Nguyen via llvm-dev]

Hi,

I'm trying to build `lld` on BigSur but it couldn't find
/usr/lib/libxml2.dylib

```
$ cd llvm-project/build
$ cmake -G Ninja -DLLVM_ENABLE_PROJECTS='lld' ../llvm/
$ ninja lld
ninja: error: '/usr/lib/libxml2.dylib', needed by 'bin/lld', missing and no
known rule to make it
```

Any idea how to resolve this?

(I've tried `brew install libxml2` but I couldn't symlink the dylib to
/usr/lib because it's read-only and I can't change it on this machine)

Thanks,

Vy
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