merging refactor (replacing)

cmake/package_config.cmake

@@ -0,0 +1,31 @@
+# This cmake code creates the configuration that is found and used by
+# find_package() of another cmake project
+
+# get lower and upper case project name for the configuration files
+
+# configure and install the configuration files
+include(CMakePackageConfigHelpers)
+
+configure_package_config_file(
+  "${CMAKE_SOURCE_DIR}/cmake/project-config.cmake.in"
+  "${PROJECT_BINARY_DIR}/${PROJECT_NAME_LOWER}-config.cmake"
+  INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME_LOWER}
+  PATH_VARS CMAKE_INSTALL_DIR)
+
+write_basic_package_version_file(
+  "${PROJECT_BINARY_DIR}/${PROJECT_NAME_LOWER}-config-version.cmake"
+  VERSION ${PROJECT_VERSION}
+  COMPATIBILITY SameMajorVersion)
+
+install(FILES
+  "${PROJECT_BINARY_DIR}/${PROJECT_NAME_LOWER}-config.cmake"
+  "${PROJECT_BINARY_DIR}/${PROJECT_NAME_LOWER}-config-version.cmake"
+  COMPONENT devel
+  DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME_LOWER})
+
+if (PROJECT_LIBRARIES OR PROJECT_STATIC_LIBRARIES)
+  install(
+    EXPORT "${TARGETS_EXPORT_NAME}"
+    FILE ${PROJECT_NAME_LOWER}-targets.cmake
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME_LOWER})
+endif ()