Adds the following advantages:

 - utf8::cpp is available, even when installed
 - cmake is aware of the library version
 - compatible with previous usage: target utf8cpp available when installed

CMakeLists.txt

@@ -19,17 +19,36 @@ target_include_directories(utf8cpp INTERFACE
 add_library(utf8::cpp ALIAS utf8cpp)
 
 if(UTF8_INSTALL)
+ include(CMakePackageConfigHelpers)
  if(MSVC)
  set(DEF_INSTALL_CMAKE_DIR CMake)
  else()
  include(GNUInstallDirs) # define CMAKE_INSTALL_*
  set(DEF_INSTALL_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/utf8cpp)
  endif()
 
+ write_basic_package_version_file(
+ ${CMAKE_CURRENT_BINARY_DIR}/utf8cppConfigVersion.cmake
+ VERSION ${PROJECT_VERSION}
+ COMPATIBILITY SameMajorVersion
+ )
+
+ configure_package_config_file(
+ ${PROJECT_SOURCE_DIR}/utf8cppConfig.cmake.in
+ ${CMAKE_CURRENT_BINARY_DIR}/utf8cppConfig.cmake
+ INSTALL_DESTINATION ${DEF_INSTALL_CMAKE_DIR}
+ )
+
  install(DIRECTORY source/ DESTINATION include/utf8cpp)
- install(TARGETS utf8cpp EXPORT utf8cppConfig)
- install(EXPORT utf8cppConfig DESTINATION ${DEF_INSTALL_CMAKE_DIR})
- export(EXPORT utf8cppConfig)
+ install(TARGETS utf8cpp EXPORT utf8cppTargets)
+ install(EXPORT utf8cppTargets DESTINATION ${DEF_INSTALL_CMAKE_DIR})
+ install(
+ FILES
+ ${CMAKE_CURRENT_BINARY_DIR}/utf8cppConfig.cmake
+ ${CMAKE_CURRENT_BINARY_DIR}/utf8cppConfigVersion.cmake
+ DESTINATION
+ ${DEF_INSTALL_CMAKE_DIR}
+ )
 endif()
 
 if(UTF8_SAMPLES)

utf8cppConfig.cmake.in

@@ -0,0 +1,6 @@
+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/utf8cppTargets.cmake")
+check_required_components( "utf8cpp" )
+
+add_library(utf8::cpp ALIAS utf8cpp)