build(cmake): add reusable static library target

.gitignore

@@ -19,3 +19,7 @@ coverage/
 
 # Demo build output
 demo/build/
+
+# CMake build directories
+build/
+build-*/

CMakeLists.txt

@@ -0,0 +1,109 @@
+cmake_minimum_required(VERSION 3.16)
+
+project(ikv VERSION 0.1.0 LANGUAGES C)
+
+include(CMakePackageConfigHelpers)
+include(GNUInstallDirs)
+
+option(IKV_BUILD_DEMOS "Build demo executables" ON)
+option(IKV_BUILD_TESTS "Build unit tests" OFF)
+option(IKV_INSTALL "Install library and CMake package files" ON)
+
+set(IKV_PUBLIC_HEADERS
+    include/ikv.h
+)
+
+set(IKV_SOURCES
+    src/ikv.c
+    src/loaders/ikv1.c
+    src/loaders/ikv2.c
+)
+
+add_library(ikv_obj OBJECT ${IKV_SOURCES})
+target_include_directories(ikv_obj
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+    PRIVATE
+        ${CMAKE_CURRENT_SOURCE_DIR}/src
+)
+target_compile_features(ikv_obj PUBLIC c_std_99)
+set_target_properties(ikv_obj PROPERTIES
+    POSITION_INDEPENDENT_CODE ON
+)
+
+add_library(ikv STATIC)
+add_library(ikv::ikv ALIAS ikv)
+target_sources(ikv PRIVATE $<TARGET_OBJECTS:ikv_obj>)
+target_include_directories(ikv
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
+)
+target_compile_features(ikv PUBLIC c_std_99)
+set_target_properties(ikv PROPERTIES
+    OUTPUT_NAME ikv
+    PUBLIC_HEADER "${IKV_PUBLIC_HEADERS}"
+)
+
+if(IKV_BUILD_DEMOS)
+    add_executable(ikv_demo demo/main.c)
+    target_link_libraries(ikv_demo PRIVATE ikv)
+
+    add_executable(ikv_unit_test demo/unit_test.c)
+    target_link_libraries(ikv_unit_test PRIVATE ikv)
+endif()
+
+if(IKV_BUILD_TESTS)
+    enable_testing()
+
+    add_executable(ikv_tests
+        demo/unit_test.c
+        ${IKV_SOURCES}
+    )
+    target_compile_definitions(ikv_tests PRIVATE IKV_TESTING)
+    target_include_directories(ikv_tests
+        PRIVATE
+            ${CMAKE_CURRENT_SOURCE_DIR}/include
+            ${CMAKE_CURRENT_SOURCE_DIR}/src
+    )
+    target_compile_features(ikv_tests PRIVATE c_std_99)
+    add_test(NAME ikv_tests COMMAND ikv_tests)
+endif()
+
+if(IKV_INSTALL)
+    install(
+        TARGETS ikv
+        EXPORT ikvTargets
+        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+        PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+    )
+
+    install(
+        EXPORT ikvTargets
+        FILE ikvTargets.cmake
+        NAMESPACE ikv::
+        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/ikv
+    )
+
+    write_basic_package_version_file(
+        "${CMAKE_CURRENT_BINARY_DIR}/ikvConfigVersion.cmake"
+        VERSION ${PROJECT_VERSION}
+        COMPATIBILITY SameMajorVersion
+    )
+
+    configure_package_config_file(
+        "${CMAKE_CURRENT_SOURCE_DIR}/cmake/ikvConfig.cmake.in"
+        "${CMAKE_CURRENT_BINARY_DIR}/ikvConfig.cmake"
+        INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/ikv"
+    )
+
+    install(
+        FILES
+            "${CMAKE_CURRENT_BINARY_DIR}/ikvConfig.cmake"
+            "${CMAKE_CURRENT_BINARY_DIR}/ikvConfigVersion.cmake"
+        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/ikv
+    )
+endif()

cmake/ikvConfig.cmake.in

@@ -0,0 +1,3 @@
+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/ikvTargets.cmake")