Build bootable image

nob.c

@@ -106,8 +106,8 @@ bool clean_dir(const char *dir_path) {
 
         const char *full_path = nob_temp_sprintf("%s/%s", dir_path, name);
         if (!nob_delete_file(full_path)) {
-            nob_log(NOB_ERROR, "could not delete %s", full_path);
-            ok = false;
+            clean_dir(full_path);
+            nob_delete_file(full_path);
         }
     }
 
@@ -115,6 +115,29 @@ bool clean_dir(const char *dir_path) {
     return ok;
 }
 
+bool build_bootable_image(Nob_Cmd *cmd) {
+    if (!nob_mkdir_if_not_exists(BUILD_FOLDER "isodir"))
+        return false;
+    if (!nob_mkdir_if_not_exists(BUILD_FOLDER "isodir/boot"))
+        return false;
+    if (!nob_mkdir_if_not_exists(BUILD_FOLDER "isodir/boot/grub"))
+        return false;
+
+    nob_cmd_append(cmd, "cp", BUILD_FOLDER "kernel", BUILD_FOLDER "isodir/boot/kernel");
+    if (!nob_cmd_run(cmd))
+        return false;
+
+    nob_cmd_append(cmd, "cp", SRC_FOLDER "grub.cfg", BUILD_FOLDER "isodir/boot/grub/grub.cfg");
+    if (!nob_cmd_run(cmd))
+        return false;
+
+    nob_cmd_append(cmd, "grub-mkrescue", "-o", BUILD_FOLDER "kernel.iso", BUILD_FOLDER "isodir");
+    if (!nob_cmd_run(cmd))
+        return false;
+
+    return true;
+}
+
 int main(int argc, char **argv) {
     NOB_GO_REBUILD_URSELF(argc, argv);
 
@@ -144,6 +167,8 @@ int main(int argc, char **argv) {
         return 1;
     if (!check_kernel(&cmd))
         return 1;
+    if (!build_bootable_image(&cmd))
+        return 1;
 
     return 0;
 }

shell.nix

@@ -7,6 +7,7 @@ pkgs.mkShell {
       pkgsCross.i686-embedded.buildPackages.binutils
       gdb
       grub2
+      xorriso
     ];
 
   shellHook = ''

src/grub.cfg

@@ -0,0 +1,3 @@
+menuentry "kernel" {
+	multiboot /boot/kernel
+}