bootstrap: Move a bunch of build flags from the recipe

bootstrap/.cargo/config.toml

@@ -0,0 +1,3 @@
+[unstable]
+build-std = ["core", "alloc", "compiler_builtins"]
+build-std-features = ["compiler-builtins-mem"]

bootstrap/Cargo.toml

@@ -6,10 +6,6 @@ authors = ["4lDO2 <4lDO2@protonmail.com>"]
 edition = "2024"
 license = "MIT"
 
-[lib]
-name = "bootstrap"
-crate-type = ["staticlib"]
-
 [dependencies]
 hashbrown = { version = "0.15", default-features = false, features = [
     "inline-more",
@@ -32,6 +28,8 @@ redox-rt = { git = "https://gitlab.redox-os.org/redox-os/relibc.git", default-fe
 [profile.release]
 panic = "abort"
 lto = "fat"
+opt-level = "s"
 
 [profile.dev]
 panic = "abort"
+opt-level = "s"

bootstrap/build.rs

@@ -0,0 +1,11 @@
+use std::env;
+
+fn main() {
+    let manifest_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
+    let arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap();
+
+    println!("cargo::rustc-link-arg=-z");
+    println!("cargo::rustc-link-arg=max-page-size=4096");
+    println!("cargo::rustc-link-arg=-T");
+    println!("cargo::rustc-link-arg={manifest_dir}/src/{arch}.ld");
+}

bootstrap/src/main.rs

@@ -1,4 +1,5 @@
 #![no_std]
+#![no_main]
 #![allow(internal_features)]
 #![feature(core_intrinsics, str_from_raw_parts, never_type)]