Add minimal CMakeLists.txt

CMakeLists.txt

@@ -0,0 +1,21 @@
+# Copyright 2018 Peter Dimov
+#
+# 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
+
+cmake_minimum_required(VERSION 3.5)
+
+project(BoostCore LANGUAGES CXX)
+
+add_library(boost_core INTERFACE)
+add_library(Boost::core ALIAS boost_core)
+
+target_include_directories(boost_core INTERFACE include)
+
+target_link_libraries(boost_core
+    INTERFACE
+        Boost::assert
+        Boost::config
+)