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_algorithm VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
@@ -39,3 +41,33 @@ if(BUILD_TESTING AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/test/CMakeLists.txt")
 
 endif()
 
+else()
+
+FILE(GLOB_RECURSE headers include/*.h include/*.hpp)
+
+idf_component_register(
+    SRCS
+        ${headers}
+    INCLUDE_DIRS
+        include
+    REQUIRES
+        boost_array
+        boost_assert
+        boost_bind
+        boost_concept_check
+        boost_config
+        boost_core
+        boost_exception
+        boost_function
+        boost_iterator
+        boost_mpl
+        boost_range
+        boost_regex
+        boost_static_assert
+        boost_throw_exception
+        boost_tuple
+        boost_type_traits
+        boost_unordered
+)
+
+endif()

include/boost/algorithm/gather.hpp

@@ -106,11 +106,11 @@ template <
     typename BidirectionalRange,    //
     typename Pred>                  // Pred models UnaryPredicate
 std::pair<
-    typename boost::range_iterator<BidirectionalRange>::type,
+    typename boost::range_iterator<const BidirectionalRange>::type,
-    typename boost::range_iterator<BidirectionalRange>::type>
+    typename boost::range_iterator<const BidirectionalRange>::type>
 gather (
-    BidirectionalRange &range,
+    const BidirectionalRange &range,
-    typename boost::range_iterator<BidirectionalRange>::type pivot,
+    typename boost::range_iterator<const BidirectionalRange>::type pivot,
     Pred pred )
 {
     return boost::algorithm::gather ( boost::begin ( range ), boost::end ( range ), pivot, pred );