How do I ensure my preferred version of -mmacosx-version-min "wins"

[Icantjuddle]

I need to provide "-mmacosx-version-min=10.14" as a compiler flag so I don't get compile failures.
I tried

llvm.toolchain(
     cxx_standard = {"": "c++23"},
     llvm_version = "21.1.6",
     extra_cxx_flags = { "darwin-aarch64": ["-mmacosx-version-min=10.14"] },
)

as well as cxx_flags, but there seems to be a -mmacosx-version-min=10.11 coming from somewhere that is overriding my preferred version and coming later in the command line arguments. I have an empty .bazelrc so it isn't from there. I couldn't find any reference in the repo. I finally settled on

#.bazelrc
build --cxxopt=-mmacosx-version-min=10.14
build --linkopt=-mmacosx-version-min=10.14

but would rather do this in the toolchain. Where am I going wrong?

[kralicky]

I am also running into this. -mmacosx-version-min=10.11 is being added from somewhere, but I can't tell where it is coming from.

[keith]

You should try the bazel specific flag for this instead:

build --host_macos_minimum_os=14.0
build --macos_minimum_os=14.0

[kralicky]

Thanks, that works!