Added an experimental partial CMakeLists.txt for dependency tracking in CMake projects.

CMakeLists.txt

@@ -0,0 +1,25 @@
+# Copyright 2018 Peter Dimov
+# Copyright 2018 Andrey Semashev
+# 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
+
+# Partial (add_subdirectory only) and experimental CMake support
+# Subject to change; please do not rely on the contents of this file yet.
+
+cmake_minimum_required(VERSION 3.5)
+
+project(BoostDetail LANGUAGES CXX)
+
+add_library(boost_detail INTERFACE)
+add_library(Boost::detail ALIAS boost_detail)
+
+target_include_directories(boost_detail INTERFACE include)
+
+target_link_libraries(boost_detail
+    INTERFACE
+        Boost::config
+        Boost::core
+        Boost::preprocessor
+        Boost::static_assert
+        Boost::type_traits
+)