From e1092eb4d123f568f2f51c8ff4da54d7be89dc0c Mon Sep 17 00:00:00 2001
From: Antoni Boucher <bouanto@zoho.com>
Date: Thu, 6 Jul 2023 17:44:15 -0400
Subject: [PATCH] Add license explanations

---
 Readme.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Readme.md b/Readme.md
index c58662b9ce5d7..e05f8dae1c6fc 100644
--- a/Readme.md
+++ b/Readme.md
@@ -105,6 +105,12 @@ $ rustc +$(cat $cg_gccjit_dir/rust-toolchain) -Cpanic=abort -Zcodegen-backend=$c
     <dd>Display the time it took to perform codegen for a crate</dd>
 </dl>
 
+## Licensing
+
+While this crate is licensed under a dual Apache/MIT license, it links to `libgccjit` which is under the GPLv3+ and thus, the resulting toolchain (rustc + GCC codegen) will need to be released under the GPL license.
+
+However, programs compiled with `rustc_codegen_gcc` do not need to be released under a GPL license.
+
 ## Debugging
 
 Sometimes, libgccjit will crash and output an error like this: