Rework as esp-idf component

CMakeLists.txt

@@ -2,6 +2,8 @@
 # Distributed under the Boost Software License, Version 1.0.
 # See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
 
+if(NOT DEFINED IDF_TARGET)
+
 cmake_minimum_required(VERSION 3.5...3.20)
 project(boost_type_index VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
 
@@ -21,3 +23,25 @@ target_link_libraries(boost_type_index
         Boost::throw_exception
         Boost::type_traits
 )
+
+else()
+
+FILE(GLOB_RECURSE headers include/*.h include/*.hpp)
+
+idf_component_register(
+    SRCS
+        ${headers}
+    INCLUDE_DIRS
+        include
+    REQUIRES
+        boost_config
+        boost_container_hash
+        boost_core
+        boost_preprocessor
+        boost_smart_ptr
+        boost_static_assert
+        boost_throw_exception
+        boost_type_traits
+)
+
+endif()