[CMake] Generate cmake target that other libraries can use

... to express their dependency on this library and retrieve any
configuration information such as the include directory, binary
to link to (if any), transitive dependencies, necessary compiler
options or the required c++ standards level.

CMakeLists.txt

@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 3.5)
+project(boost-mpl)
+
+add_library(boost_mpl INTERFACE)
+add_library(Boost::mpl ALIAS boost_mpl)
+
+target_include_directories(boost_mpl INTERFACE include)
+
+target_link_libraries(boost_mpl
+	INTERFACE
+		Boost::config
+		Boost::core
+		Boost::predef
+		Boost::preprocessor
+		Boost::static_assert
+		Boost::type_traits
+		Boost::utility
+)
+