Merge pull request #9 from topazus/fix-cmake

CMake improvement

Author: christianparpart

CMakeLists.txt

@@ -4,27 +4,60 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
+include(GNUInstallDirs)
 include(ThirdParties)
 include(ClangTidy)
 include(PedanticCompiler)
 
 set(boxed_cpp_HEADERS
-    include/boxed-cpp/boxed.hpp
+    ${PROJECT_SOURCE_DIR}/include/boxed-cpp/boxed.hpp
 )
 add_library(boxed-cpp INTERFACE)
+add_library(boxed-cpp::boxed-cpp ALIAS boxed-cpp)
 
 target_compile_features(boxed-cpp INTERFACE cxx_std_20)
 target_include_directories(boxed-cpp INTERFACE
     $<BUILD_INTERFACE:${${PROJECT_NAME}_SOURCE_DIR}/include>
-    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/include>
+    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+)
+
+# Generate the version, config and target files
+include(CMakePackageConfigHelpers)
+write_basic_package_version_file(${CMAKE_CURRENT_BINARY_DIR}/boxed-cpp-config-version.cmake
+    VERSION ${PROJECT_VERSION}
+    COMPATIBILITY SameMajorVersion
+)
+configure_package_config_file(boxed-cpp-config.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/boxed-cpp-config.cmake
+    INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/boxed-cpp
+)
+
+install(FILES ${boxed_cpp_HEADERS}
+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/boxed-cpp
+)
+install(TARGETS boxed-cpp
+    EXPORT boxed-cpp-targets
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}
+)
+
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/boxed-cpp-config.cmake
+            ${CMAKE_CURRENT_BINARY_DIR}/boxed-cpp-config-version.cmake
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/boxed-cpp
+)
+install(EXPORT boxed-cpp-targets
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/boxed-cpp
+    NAMESPACE boxed-cpp::
 )
 
 # ---------------------------------------------------------------------------
 # unit tests
 
-option(BOXED_CPP_TESTS "Enables building of unittests for boxed-cpp [default: ON]" OFF)
+option(BOXED_CPP_TESTS "Enables building of unittests for boxed-cpp [default: OFF]" OFF)
 if(BOXED_CPP_TESTS)
-    ThirdPartiesAdd_Catch2()
+    find_package(Catch2)
+    if (NOT Catch2_FOUND)
+        ThirdPartiesAdd_Catch2()
+    endif()
     enable_testing()
     add_executable(test-boxed-cpp
         test-boxed-cpp.cpp

boxed-cpp-config.cmake.in

@@ -0,0 +1,8 @@
+@PACKAGE_INIT@
+
+# prevent repeatedly including the targets
+if(NOT TARGET boxed-cpp::boxed-cpp)
+    include(${CMAKE_CURRENT_LIST_DIR}/boxed-cpp-targets.cmake)
+endif()
+
+message(STATUS "Found @PROJECT_NAME@, version: ${@PROJECT_NAME@_VERSION}")