From 7837e57e93b1cb89f5a80a779e853bad070de777 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Francis=20Th=C3=A9rien?= <frtherien@gmail.com>
Date: Fri, 24 Feb 2023 03:07:35 -0500
Subject: [PATCH] Disable threads for os:any (#21425)

---
 config/nim.cfg           | 5 +++++
 lib/std/typedthreads.nim | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/config/nim.cfg b/config/nim.cfg
index 973de077a9..ef93ec99e4 100644
--- a/config/nim.cfg
+++ b/config/nim.cfg
@@ -100,6 +100,11 @@ nimblepath="$home/.nimble/pkgs/"
   gcc.options.always %= "${gcc.options.always} -fsanitize=null -fsanitize-undefined-trap-on-error"
 @end
 
+# Turn off threads support when compiling for bare-metal targets (--os:any)
+@if any:
+  threads:off
+@end
+
 @if unix and mingw:
   # Cross compile for Windows from Linux/OSX using MinGW
   i386.windows.gcc.exe = "i686-w64-mingw32-gcc"
diff --git a/lib/std/typedthreads.nim b/lib/std/typedthreads.nim
index b45ce8a616..8359ca353a 100644
--- a/lib/std/typedthreads.nim
+++ b/lib/std/typedthreads.nim
@@ -45,6 +45,8 @@ when defined(nimPreviewSlimSystem):
 when defined(genode):
   import genode/env
 
+when hostOS == "any":
+  {.error: "Threads not implemented for os:any. Please compile with --threads:off.".}
 
 when hasAllocStack or defined(zephyr) or defined(freertos) or defined(nuttx) or
     defined(cpu16) or defined(cpu8):