add build-time helper that shows proper command

Author: Qix-

.cargo/config.toml

@@ -43,6 +43,8 @@ paths = [
 [alias]
 oro = [
     "run",
+	"-p",
+	"oro-kernel-build",
     "--offline",
     "--quiet",
     "--message-format",

Cargo.lock

@@ -10,7 +10,7 @@ path = "utils/empty.rs"
 
 [workspace]
 resolver = "2"
-default-members = ["utils/build"]
+default-members = ["utils/build-help"]
 members = [
 	"lib/*",
 	"utils/*",

Cargo.toml

@@ -20,15 +20,25 @@ All code necessary to build and run the kernel is provided in this repository.
 > It is not yet suitable for use in a production environment.
 
 ## Building
-The Oro kernel uses its own build system that runs in-situ with a normal
-`cargo build`. To build all possible versions of the kernel, simply run:
+The Oro kernel uses its own build utility called `cargo oro`.
+
+To build all possible versions of the kernel and all booloaders, simply run:
 
 ```shell
 cargo oro build
 ```
 
-If you'd like to build a specific version of the kernel, you can specify
-the `--features` flag with the appropriate feature.
+To see all available build options, run:
+
+```shell
+cargo oro build --help
+```
+
+For all other operations, such as documenting, linting, vendoring, etc.:
+
+```shell
+cargo oro --help
+```
 
 ## Documentation
 The Oro kernel is thoroughly documented. You may generate a local copy of

README.md

@@ -0,0 +1,5 @@
+[package]
+name = "oro-kernel-build-notice"
+version = "0.1.0"
+publish = false
+edition = "2024"

utils/build-help/Cargo.toml

@@ -0,0 +1,6 @@
+#[cfg(not(test))]
+compile_error!("run `cargo oro --help` instead");
+
+fn main() {
+	panic!("not sure how you built this, but this does nothing; run `cargo oro --help` instead");
+}