Per-Build Config - zigtools

The following options can be set on a per-project basis by placing zls.build.json in the project root directory next to build.zig.

Option	Type	Default value	What it Does
`relative_builtin_path`	`?[]const u8`	`null`	If present, this path is used to resolve `@import("builtin")`
`build_options`	`?[]BuildOption`	`null`	If present, this contains a list of user options to pass to the build. This is useful when options are used to conditionally add packages in `build.zig`.

`BuildOption`

BuildOption is defined as follows:

const BuildOption = struct {
    name: []const u8,
    value: ?[]const u8 = null,
};

When value is present, the option will be passed the same as in zig build -Dname=value. When value is null, the option will be passed as a flag instead as in zig build -Dflag.