Can't find Zig built in header

[iacore]

Zig Version

0.15.1

ZLS Version

0.15.0

Client / Code Editor / Extensions

VS Code

Steps to Reproduce and Observed Behavior

1. extract a.tar.gz
2. Open project in VS Code
3. Open main.zig

Expected Behavior

zls should find the header.

Log Output

[iacore]

I think zls doesn't scan added include path or sysroot. I hope that zls could work for cross-compiled programs.

Currently, this won't work:

    const in_zls = b.option(bool, "zls", "ZLS mode") orelse false;
    std.debug.print("in_zls: {}", .{in_zls});

...
// exe has .link_libc = true

    if (in_zls) {
        exe.root_module.addIncludePath(.{ .cwd_relative = "/sysroot/usr/include" });
    }