Rework as esp-idf component

CMakeLists.txt

@@ -1,12 +1,11 @@
 # Copyright 2018 Mike Dev
 # Distributed under the Boost Software License, Version 1.0.
 # See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
-#
-# NOTE: CMake support for Boost.typeof is currently experimental at best
-#       and the interface is likely to change in the future
 
-cmake_minimum_required(VERSION 3.5)
-project(BoostTypeof LANGUAGES CXX)
+if(NOT DEFINED IDF_TARGET)
+
+cmake_minimum_required(VERSION 3.5...3.20)
+project(boost_typeof VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
 
 add_library(boost_typeof INTERFACE)
 add_library(Boost::typeof ALIAS boost_typeof)
@@ -20,3 +19,19 @@ target_link_libraries(boost_typeof
         Boost::type_traits
 )
 
+else()
+
+FILE(GLOB_RECURSE headers include/*.h include/*.hpp)
+
+idf_component_register(
+    SRCS
+        ${headers}
+    INCLUDE_DIRS
+        include
+    REQUIRES
+        boost_config
+        boost_preprocessor
+        boost_type_traits
+)
+
+endif()