Failed to dectect apple as vendor for x86_64-apple-darwin

[weiznich]

I've trying to port the build system of ring from makefiles to a build.rs based system.
To better handle the the detection for which target ring is build, I use this crate. It's basically working, but there are strange ci-failures on macos. It seems like target_build_utils is unable to detect apple as vendor even if target is set to x86_64-apple-darwin. I'm not sure why this happen, there seems to be an test in this crate that also passes on my local machine.

[nagisa]

This crate essentially parses the output of rustc --print=cfg --target=x86_64-apple-darwin. Vendor missing either means I messed up badly writing the trivial parser, or the rustc simply prints incomplete cfg, like this:

$ rustup run stable rustc --print=cfg --target=x86_64-apple-darwin
target_os="macos"
target_family="unix"
target_arch="x86_64"
target_endian="little"
target_pointer_width="64"
target_env=""
unix
debug_assertions
▪rustup run stable rustc --version
rustc 1.14.0 (e8a012324 2016-12-16)

I’ll think what can be done about this.

[nagisa]

As a workaround, its probably best to check target_os == "macos" || target_os == "ios" instead.

[nagisa]

see rust-lang/rust#29718.

[nagisa]

Thanks for the report. I’ve published version 0.2.0 which contains d337924 and makes target_vendor to return Option.