add cmake package

CMakeLists.txt

@@ -0,0 +1,59 @@
+cmake_minimum_required(VERSION 3.12)
+# https://dominikberner.ch/cmake-interface-lib/
+
+project(
+    "verdigris"
+    VERSION 1.2.0
+    HOMEPAGE_URL "https://github.com/woboq/verdigris")
+
+set(libname "verdigris")
+
+add_library(${libname} INTERFACE)
+# add alias so the project can be uses with add_subdirectory
+add_library(${libname}::${libname} ALIAS ${libname})
+
+include(GNUInstallDirs)
+
+target_include_directories(
+  ${libname}
+  INTERFACE $<BUILD_INTERFACE:${${libname}_SOURCE_DIR}/lib>
+            $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+
+target_compile_features(${libname} INTERFACE cxx_std_11)
+
+install(TARGETS ${libname}
+    EXPORT ${libname}_Targets
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+
+include(CMakePackageConfigHelpers)
+write_basic_package_version_file(
+    "${libname}ConfigVersion.cmake"
+    VERSION ${PROJECT_VERSION}
+    COMPATIBILITY SameMajorVersion)
+
+configure_package_config_file(
+  "${PROJECT_SOURCE_DIR}/cmake/${libname}Config.cmake.in"
+  "${PROJECT_BINARY_DIR}/${libname}Config.cmake"
+  INSTALL_DESTINATION
+  ${CMAKE_INSTALL_DATAROOTDIR}/${libname}/cmake)
+
+install(EXPORT ${libname}_Targets
+    FILE ${libname}Targets.cmake
+    NAMESPACE ${libname}::
+    DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/${libname}/cmake)
+
+install(FILES "${PROJECT_BINARY_DIR}/${libname}Config.cmake"
+    "${PROJECT_BINARY_DIR}/${libname}ConfigVersion.cmake"
+    DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/${libname}/cmake)
+
+install(FILES
+    ${PROJECT_SOURCE_DIR}/src/wobjectcpp.h
+    ${PROJECT_SOURCE_DIR}/src/wobjectdefs.h
+    ${PROJECT_SOURCE_DIR}/src/wobjectimpl.h
+    DESTINATION include/verdigris)
+
+set(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE.LGPLv3")
+
+include(CPack)

cmake/verdigrisConfig.cmake.in

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+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/@[email protected]")
+check_required_components("@PROJECT_NAME@")