initial commit -- framebuffer Hello, World!

kernel/build.rs

@@ -0,0 +1,38 @@
+use std::process::Command;
+use std::{env, path::Path};
+
+fn main() {
+    // Get the output directory from cargo
+    let out_dir = env::var("OUT_DIR").unwrap();
+    let build_dir = Path::new(&out_dir).ancestors().nth(3).unwrap();
+    let iso_root = build_dir.join("iso_root");
+
+    // Create ISO directory structure
+    std::fs::create_dir_all(iso_root.join("boot/limine")).unwrap();
+    std::fs::create_dir_all(iso_root.join("EFI/BOOT")).unwrap();
+
+    // Clone and build Limine if needed
+    let limine_dir = build_dir.join("limine");
+    if !limine_dir.exists() {
+        Command::new("git")
+            .args([
+                "clone",
+                "https://github.com/limine-bootloader/limine.git",
+                "--branch=v8.x-binary",
+                "--depth=1",
+            ])
+            .arg(&limine_dir)
+            .status()
+            .expect("Failed to clone Limine");
+
+        Command::new("make")
+            .current_dir(&limine_dir)
+            .status()
+            .expect("Failed to build Limine");
+    }
+
+    // Tell cargo to rerun if these files change
+    println!("cargo:rerun-if-changed=src");
+    println!("cargo:rerun-if-changed=linker.ld");
+    println!("cargo:rerun-if-changed=../config/limine.conf");
+}