setup no-std ability

Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "mailf0rm"
+version = "0.1.0"

Cargo.toml

@@ -3,6 +3,10 @@ name = "mailf0rm"
 version = "0.1.0"
 edition = "2021"
 
+[features]
+default = []
+no-std = []
+
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]

src/lib.rs

@@ -1,3 +1,13 @@
+#![cfg_attr(feature = "no-std"), no_std)]
+
+// example std && no_std setup
+//#[cfg(feature = "no-std")]
+//use core::alloc::Layout;
+//
+//#[cfg(not(feature = "no-std"))]
+//use std::alloc::Layout;
+
+// Autogenerated Code
 pub fn add(left: usize, right: usize) -> usize {
     left + right
 }