From cb314f3a2755f43716ecd7c7125c8a8cc5cd4040 Mon Sep 17 00:00:00 2001
From: Adrian Del Grosso <10929341+ad3154@users.noreply.github.com>
Date: Fri, 8 Mar 2024 18:06:20 -0700
Subject: [PATCH] [CMAKE]: When threading is disabled, don't attempt to find
 threads

Also, add option in CMake for disabling threading.
---
 CMakeLists.txt | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 049fedb7f..97f6c4a8e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,11 +25,17 @@ if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   add_compile_options(-Wall -Wextra -Wpedantic)
 endif()
 
-# Find packages required for Socket CAN
-set(THREADS_PREFER_PTHREAD_FLAG ON)
-# ESP-IDF doesn't implement find_package(Threads) correctly (dec 2022)
-if(NOT ESP_PLATFORM)
-  find_package(Threads REQUIRED)
+option(
+  CAN_STACK_DISABLE_THREADS
+  "Set to ON to disable multi-threading, which removes the need for std::thread, std::mutex, and related libraries."
+  OFF)
+if(NOT CAN_STACK_DISABLE_THREADS AND NOT ARDUINO)
+  # Find packages required for Threading
+  set(THREADS_PREFER_PTHREAD_FLAG ON)
+  # ESP-IDF doesn't implement find_package(Threads) correctly (dec 2022)
+  if(NOT ESP_PLATFORM)
+    find_package(Threads REQUIRED)
+  endif()
 endif()
 
 # A handy function to prepend text to all elements in a list (useful for