From d3407f1a3bab0dd8c139272ee354175c0b489903 Mon Sep 17 00:00:00 2001
From: John Ericson <John.Ericson@Obsidian.Systems>
Date: Fri, 17 Sep 2021 17:12:54 +0000
Subject: [PATCH] cc-wrapper: Add support for -mthumb / -marm

---
 pkgs/build-support/cc-wrapper/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/build-support/cc-wrapper/default.nix b/pkgs/build-support/cc-wrapper/default.nix
index 804f59286c7a..3738f628b187 100644
--- a/pkgs/build-support/cc-wrapper/default.nix
+++ b/pkgs/build-support/cc-wrapper/default.nix
@@ -463,6 +463,9 @@ stdenv.mkDerivation {
     + optionalString (targetPlatform ? gcc.mode) ''
       echo "-mmode=${targetPlatform.gcc.mode}" >> $out/nix-support/cc-cflags-before
     ''
+    + optionalString (targetPlatform ? gcc.thumb) ''
+      echo "-m${if targetPlatform.gcc.thumb then "thumb" else "arm"}" >> $out/nix-support/cc-cflags-before
+    ''
     + optionalString (targetPlatform ? gcc.tune &&
                       isGccArchSupported targetPlatform.gcc.tune) ''
       echo "-mtune=${targetPlatform.gcc.tune}" >> $out/nix-support/cc-cflags-before