FreeBSD: ld-elf.so.1: Shared object "libxml2.so.2" not found, required by "lldb"

[etcwilde]

Description

lldb and lld both depend on libxml2.so.2, but the package manager installs libxml2.so.16.
User-installed packages are kept pretty recent and libxml2 updates frequently. As a result, it leaves the Swift packages broken.

Reproduction

Download the tarball from swift.org and try to run lldb or lld from the toolchain:

%  ~/.toolchains/swift/ci-2025-11-03/usr/bin/lldb --version
ld-elf.so.1: Shared object "libxml2.so.2" not found, required by "lldb"

Expected behavior

lld and lldb should work.

Environment

Swift version 6.3-dev (LLVM bff1370bd79c983, Swift 57cf4ce)
Target: x86_64-unknown-freebsd14.3
Build config: +assertions

Additional information

No response

[JDevlieghere]

Should we link it statically? llvm/llvm-project#166867

[etcwilde]

I've started looking into that. I think build-script is sufficiently mucked up that we wouldn't be worse off than we are today if we pass it the libxml2.a that we built for the FoundationXML runtime. It just means that there's another place where we're mixing runtime content with toolchain content.

[etcwilde]

Merged: #85345
This should be resolved. Waiting on the next green FreeBSD build to confirm.

[etcwilde]

This is resolved. The toolchain from 2025-11-08 does not depend on the libxml2 from the system.
https://download.swift.org/tmp-ci-nightly/development/swift-DEVELOPMENT-SNAPSHOT-2025-11-08-a-198/freebsd14/swift-DEVELOPMENT-SNAPSHOT-2025-11-08-a/swift-DEVELOPMENT-SNAPSHOT-2025-11-08-a-freebsd14.tar.gz