Implement CMake interface library, install rules

.gitignore

@@ -9,6 +9,7 @@ install_manifest.txt
 compile_commands.json
 CTestTestfile.cmake
 _deps
+/.idea
 /.vs
 *.user
 /debug

CMakeLists.txt

@@ -1,11 +1,50 @@
 # CMakeList.txt : CMake project for bcdec, include source and define
 # project specific logic here.
 #
-cmake_minimum_required (VERSION 3.8)
+cmake_minimum_required (VERSION 3.21)
 
-project ("bcdec" LANGUAGES C)
+project (bcdec VERSION "0.97" LANGUAGES C)
 
-# Add source to this project's executable.
-add_executable (bcdec  "bcdec.h" "test.c")
 
-# TODO: Add tests and install targets if needed.
+# Create library.
+add_library (bcdec INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/include/bcdec.h")
+
+target_include_directories (bcdec INTERFACE
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+
+
+# Create test executable.
+option (BCDEC_TEST "Create the bcdec test executable" ${PROJECT_IS_TOP_LEVEL})
+if (BCDEC_TEST)
+    add_executable (bcdec_test "${CMAKE_CURRENT_SOURCE_DIR}/test/test.c")
+    target_link_libraries (bcdec_test PRIVATE bcdec)
+endif ()
+
+
+# Add install rules.
+option (BCDEC_INSTALL "Create install rules for bcdec header" ${PROJECT_IS_TOP_LEVEL})
+if (BCDEC_INSTALL)
+    include (CMakePackageConfigHelpers)
+    write_basic_package_version_file (
+            "${PROJECT_BINARY_DIR}/bcdecConfigVersion.cmake"
+            VERSION "${PROJECT_VERSION}"
+            COMPATIBILITY AnyNewerVersion
+    )
+
+    install (TARGETS bcdec
+            EXPORT bcdecTargets
+            PUBLIC_HEADER DESTINATION include COMPONENT Development)
+
+    include (CMakePackageConfigHelpers)
+    configure_package_config_file (
+            "${PROJECT_SOURCE_DIR}/cmake/bcdecConfig.cmake.in"
+            "${PROJECT_BINARY_DIR}/bcdecConfig.cmake"
+            INSTALL_DESTINATION lib/cmake/bcdec)
+
+    install(EXPORT bcdecTargets DESTINATION lib/cmake/bcdec)
+    install(FILES "${PROJECT_BINARY_DIR}/bcdecConfigVersion.cmake"
+            "${PROJECT_BINARY_DIR}/bcdecConfig.cmake"
+            DESTINATION lib/cmake/bcdec)
+    install(DIRECTORY ${PROJECT_SOURCE_DIR}/include/ DESTINATION include)
+endif ()

cmake/bcdecConfig.cmake.in

@@ -0,0 +1,4 @@
+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/bcdecTargets.cmake")
+check_required_components("@PROJECT_NAME@")