First small step

nob.c

@@ -0,0 +1,21 @@
+#define NOB_IMPLEMENTATION
+#include "nob.h"
+
+#define BUILD_FOLDER "build/"
+#define SRC_FOLDER "src/"
+
+int main(int argc, char **argv) {
+    NOB_GO_REBUILD_URSELF(argc, argv);
+
+    if (!nob_mkdir_if_not_exists(BUILD_FOLDER))
+        return 1;
+
+    Nob_Cmd cmd = {0};
+
+    nob_cmd_append(&cmd, "cc", "-Wall", "-Wextra", "-o", BUILD_FOLDER "kernel", SRC_FOLDER "kernel.c");
+
+    if (!nob_cmd_run(&cmd))
+        return 1;
+
+    return 0;
+}