Rework as esp-idf component

CMakeLists.txt

@@ -3,6 +3,8 @@
 # Distributed under the Boost Software License, Version 1.0.
 # https://www.boost.org/LICENSE_1_0.txt
 
+if(NOT DEFINED IDF_TARGET)
+
 cmake_minimum_required(VERSION 3.5...3.16)
 
 project(boost_static_string VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
@@ -171,3 +173,19 @@ file (GLOB_RECURSE PROJECT_FILES
 add_subdirectory (test)
 
 endif()
+
+else()
+
+idf_component_register(
+    INCLUDE_DIRS
+        include
+    REQUIRES
+        boost_assert
+        boost_container_hash
+        boost_static_assert
+        boost_throw_exception
+        boost_utility
+)
+
+endif()
+