FreeBSD -- ruby 4.0.0 build from source distribution and --enable-zjit fails

[stevewi-niteflyte]

When I try to build ruby 4.0.0 on FreeBSD with --enable-zjit, the build fails. The attached logs will tell the story.

This succeeds on macOS 26.2 (Tahoe). I noticed that two rust objects are built on macOS (zjit.rlib & yjit.rlib) that are NOT built on FreeBSD.

Here's the particulars:

• FreeBSD bill.local 15.0-RELEASE-p1 FreeBSD 15.0-RELEASE-p1 hp800g3 amd64
• make is the version that ships with FreeBSD 15.0-RELEASE-p1 (although it fails the same way using gmake too)
• clang --version:

FreeBSD clang version 19.1.7 (https://github.com/llvm/llvm-project.git llvmorg-19.1.7-0-gcd708029e0b2)
Target: x86_64-unknown-freebsd15.0
Thread model: posix
InstalledDir: /usr/bin

• ld --version:

LLD 19.1.7 (FreeBSD llvmorg-19.1.7-0-gcd708029e0b2-1500001) (https://github.com/llvm/llvm-project.git llvmorg-19.1.7-0-gcd708029e0b2) (compatible with GNU linkers)

• rustc --version:

rustc 1.92.0 (ded5c06cf 2025-12-08) (built from a source tarball)

• configure --version:

configure
generated by GNU Autoconf 2.71

*copyright omitted*

I have ruby 4.0.0 installed on this machine but with yjit only. At this point all I'm trying to do is BUILD a version with zjit...I don't intend to use it at the moment.

config.log

make.log

config.macOS-26.log

make.macOS-26.log