From 6d2debe1fde1727334f93b5700ccab286c904880 Mon Sep 17 00:00:00 2001
From: Toby Chaloner <toby.chaloner@gmail.com>
Date: Sun, 14 Jul 2024 21:55:22 +0100
Subject: [PATCH] ESP8266 build.opt missing fix

---
 Arduino-toolchain.cmake | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Arduino-toolchain.cmake b/Arduino-toolchain.cmake
index 74a3de0..7c2b557 100644
--- a/Arduino-toolchain.cmake
+++ b/Arduino-toolchain.cmake
@@ -94,6 +94,11 @@ set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
 # Workaround for CMAKE_TRY_COMPILE_TARGET_TYPE. For later ESP32 cores this file is missing
 file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/build_opt.h" "")
 
+if (NOT EXISTS "${CMAKE_BINARY_DIR}/core/build.opt")
+  file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/core)
+  file(TOUCH ${CMAKE_BINARY_DIR}/core/build.opt)
+endif()
+
 # Do not try to link during the configure time, due to the dependency on the
 # core, which we do not have a target yet.
 set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)