Passing SDKROOT for Zig 0.14 and higher

[Vaider7]

Hi everyone!

I've faced an error when building project on Macos with--target universal2-apple-darwin:

error: unable to find framework 'Security'. searched paths:
  /System/Library/Frameworks/Security.framework/Security.tbd
  /System/Library/Frameworks/Security.framework/Security.dylib
  /System/Library/Frameworks/Security.framework/Security
error: unable to find framework 'CoreServices'. searched paths:
  /System/Library/Frameworks/CoreServices.framework/CoreServices.tbd
  /System/Library/Frameworks/CoreServices.framework/CoreServices.dylib
  /System/Library/Frameworks/CoreServices.framework/CoreServices
  ...

$SDKROOT set to right location

I looked at source code and found one interesting part in src/zig.rs:

if let Some(ref sdkroot) = sdkroot {
    let include_prefix = if (zig_version.major, zig_version.minor) < (0, 14) {
        sdkroot
    } else {
        Path::new("/")
    };
    new_cmd_args.extend_from_slice(&[
        "-isystem".to_string(),
        format!("{}", include_prefix.join("usr").join("include").display()),
        format!("-L{}", include_prefix.join("usr").join("lib").display()),
        format!(
            "-F{}",
            include_prefix
                .join("System")
                .join("Library")
                .join("Frameworks")
                .display()
        ),
        "-DTARGET_OS_IPHONE=0".to_string(),
    ]);
}

So it checks if Zig version is lower than 0.14, then $SDKROOT is used as path for lib, include and framework files, otherwise it use / path for the same purpose.

My question is why it tied to Zig 0.14 version? I think if someone specify $SDKROOT, this exact path must be used as sdk, not the system one, despite Zig version.

For my problem manually setting -F$SDKROOT/System/Library/Frameworks as argument for zig cc solves the problem. The version of Zig I use is 0.14.1