build: add cmake support

feat: add cmake support

chore: remove old code

revert: remove mbus_data_record_unit

build: do not break existing building system

CMakeLists.txt

@@ -0,0 +1,150 @@
+cmake_minimum_required(VERSION 3.5)
+
+project(libmbus LANGUAGES CXX C)
+
+set(PROJECT_VERSION "0.9.0")
+
+if(CMAKE_BUILD_TYPE STREQUAL "")
+  message(STATUS "CMAKE_BUILD_TYPE empty setting to Debug")
+  set(CMAKE_BUILD_TYPE "Debug")
+endif()
+
+option(LIBMBUS_BUILD_EXAMPLES "build examples" OFF)
+option(LIBMBUS_BUILD_TESTS "build tests" OFF)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+set(CMAKE_C_STANDARD 11)
+
+# Append our module directory to CMake
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_BINARY_DIR})
+
+# Set the output of the libraries and executables.
+set(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/bin)
+set(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/lib)
+
+#
+# static analysis
+#
+
+if(LIBMBUS_RUN_CLANG_TIDY)
+  find_program(
+    CLANG_TIDY_EXE
+    NAMES "clang-tidy"
+    DOC "/usr/bin/clang-tidy")
+  if(NOT CLANG_TIDY_EXE)
+    message(WARNING "clang-tidy not found.")
+  else()
+    message(STATUS "clang-tidy found: ${CLANG_TIDY_EXE}")
+    set(DO_CLANG_TIDY "${CLANG_TIDY_EXE}")
+  endif()
+endif(LIBMBUS_RUN_CLANG_TIDY)
+
+include(CheckIncludeFile)
+
+check_include_file(dlfcn.h HAVE_DLFCN_H)
+check_include_file(inttypes.h HAVE_INTTYPES_H)
+check_include_file(memory.h HAVE_MEMORY_H)
+check_include_file(stdlib.h HAVE_STDINT_H)
+check_include_file(stdint.h HAVE_STDLIB_H)
+check_include_file(strings.h HAVE_STRINGS_H)
+check_include_file(string.h HAVE_STRING_H)
+check_include_file(sys/stat.h HAVE_SYS_STAT_H)
+check_include_file(sys/types.h HAVE_SYS_TYPES_H)
+check_include_file(unistd.h HAVE_UNISTD_H)
+
+#
+# library
+#
+set(PACKAGE_STRING "${PROJECT_NAME} ${PROJECT_VERSION}")
+
+set(PACKAGE_VERSION "${PROJECT_VERSION}")
+set(VERSION "${PROJECT_VERSION}")
+configure_file(${CMAKE_CURRENT_LIST_DIR}/mbus/config.h.in
+               ${CMAKE_CURRENT_LIST_DIR}/config.h)
+
+add_library(
+  ${PROJECT_NAME}
+  ${CMAKE_CURRENT_LIST_DIR}/mbus/mbus-protocol.c
+  ${CMAKE_CURRENT_LIST_DIR}/mbus/mbus-protocol.h
+  ${CMAKE_CURRENT_LIST_DIR}/mbus/mbus-tcp.c
+  ${CMAKE_CURRENT_LIST_DIR}/mbus/mbus-tcp.h
+  ${CMAKE_CURRENT_LIST_DIR}/mbus/mbus.c
+  ${CMAKE_CURRENT_LIST_DIR}/mbus/mbus.h
+  ${CMAKE_CURRENT_LIST_DIR}/mbus/mbus-protocol-aux.c
+  ${CMAKE_CURRENT_LIST_DIR}/mbus/mbus-protocol-aux.h
+  ${CMAKE_CURRENT_LIST_DIR}/mbus/mbus-serial.c
+  ${CMAKE_CURRENT_LIST_DIR}/mbus/mbus-serial.h)
+target_include_directories(
+  ${PROJECT_NAME}
+  PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}>
+         $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
+         $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+target_link_libraries(${PROJECT_NAME} PRIVATE m)
+target_compile_options(${PROJECT_NAME} PRIVATE -Wall -Wextra -Wno-pedantic)
+
+if(CLANG_TIDY_EXE)
+  set_target_properties(${PROJECT_NAME} PROPERTIES CXX_CLANG_TIDY
+                                                   "${DO_CLANG_TIDY}")
+endif()
+
+add_library(${PROJECT_NAME}::${PROJECT_NAME} ALIAS ${PROJECT_NAME})
+
+#
+# examples
+#
+
+if(LIBMBUS_BUILD_EXAMPLES)
+  message(STATUS "building examples")
+  add_subdirectory(bin)
+endif()
+
+#
+# tests
+#
+
+if(LIBMBUS_BUILD_TESTS)
+  message(STATUS "building tests")
+  enable_testing()
+  add_subdirectory(test)
+endif()
+
+#
+# install
+#
+
+include(GNUInstallDirs)
+include(CMakePackageConfigHelpers)
+
+set(LIBMBUS_CONFIG_INSTALL_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME})
+install(
+  TARGETS ${PROJECT_NAME}
+  EXPORT ${PROJECT_NAME}Targets
+  LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT lib
+  ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT lib)
+
+install(
+  EXPORT ${PROJECT_NAME}Targets
+  DESTINATION ${LIBMBUS_CONFIG_INSTALL_DIR}
+  NAMESPACE ${PROJECT_NAME}::
+  COMPONENT dev)
+
+configure_package_config_file(cmake/Config.cmake.in ${PROJECT_NAME}Config.cmake
+                              INSTALL_DESTINATION ${LIBMBUS_CONFIG_INSTALL_DIR})
+write_basic_package_version_file(${PROJECT_NAME}ConfigVersion.cmake
+                                 COMPATIBILITY SameMajorVersion)
+install(
+  FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
+        ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
+  DESTINATION ${LIBMBUS_CONFIG_INSTALL_DIR}
+  COMPONENT dev)
+
+# BUG: installing empty dirs https://gitlab.kitware.com/cmake/cmake/issues/17122
+install(
+  DIRECTORY ${CMAKE_CURRENT_LIST_DIR}/mbus/
+  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/mbus/
+  COMPONENT dev
+  FILES_MATCHING
+  PATTERN "*.h")