From 9f5e77616b1955307206fba6dccd6fdcc8754420 Mon Sep 17 00:00:00 2001
From: jgromes <jan.gromes@gmail.com>
Date: Sun, 4 Jun 2023 13:23:22 +0200
Subject: [PATCH] Updated CMake for ESP-IDF (#748)

---
 CMakeLists.txt | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 33f0ebfd..ffcc6abc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,25 @@
 cmake_minimum_required(VERSION 3.13)
 
+if(ESP_PLATFORM)
+	# Build RadioLib as an ESP-IDF component
+  # required because ESP-IDF runs cmake in script mode
+  # and needs idf_component_register()
+  file(GLOB_RECURSE RADIOLIB_ESP_SOURCES
+    "src/*.*"
+  )
+
+	idf_component_register(
+    SRCS ${RADIOLIB_ESP_SOURCES} 
+    INCLUDE_DIRS . src 
+  )
+
+	return()
+endif()
+
+if(CMAKE_SCRIPT_MODE_FILE)
+  message(FATAL_ERROR "Attempted to build RadioLib in script mode")
+endif()
+
 project(radiolib)
 
 file(GLOB_RECURSE RADIOLIB_SOURCES
@@ -23,4 +43,3 @@ install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/src/
   DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/RadioLib
   FILES_MATCHING PATTERN "*.h"
 )
-