CMakeLists.txt - github/CESNET/libyang - Gitiles

 cmake_minimum_required(VERSION 2.8.12)

 # force out-of-source build
 if(NOT FORCE_INSRC_BUILD AND ${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
     message(FATAL_ERROR "In-source build is not allowed. Please make a standalone build directory and run CMake from there. You may need to remove CMakeCache.txt.")
 endif()

 project(libyang C)

 # include custom Modules
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/CMakeModules/")

 include(GNUInstallDirs)
 include(CheckSymbolExists)
 include(UseCompat)

 set(LIBYANG_DESCRIPTION "libyang is YANG data modelling language parser and toolkit written (and providing API) in C.")

 # Correct RPATH usage on OS X
 set(CMAKE_MACOSX_RPATH TRUE)

 # Version of the project
 # Generic version of not only the library. Major version is reserved for really big changes of the project,
 # minor version changes with added functionality (new tool, functionality of the tool or library, ...) and
 # micro version is changed with a set of small changes or bugfixes anywhere in the project.
 set(LIBYANG_MAJOR_VERSION 1)
 set(LIBYANG_MINOR_VERSION 0)
 set(LIBYANG_MICRO_VERSION 206)
 set(LIBYANG_VERSION ${LIBYANG_MAJOR_VERSION}.${LIBYANG_MINOR_VERSION}.${LIBYANG_MICRO_VERSION})

 # Version of the library
 # Major version is changed with every backward non-compatible API/ABI change in libyang, minor version changes
 # with backward compatible change and micro version is connected with any internal change of the library.
 set(LIBYANG_MAJOR_SOVERSION 1)
 set(LIBYANG_MINOR_SOVERSION 9)
 set(LIBYANG_MICRO_SOVERSION 23)
 set(LIBYANG_SOVERSION_FULL ${LIBYANG_MAJOR_SOVERSION}.${LIBYANG_MINOR_SOVERSION}.${LIBYANG_MICRO_SOVERSION})
 set(LIBYANG_SOVERSION ${LIBYANG_MAJOR_SOVERSION})

 # check the supported platform
 if(NOT UNIX)
     message(FATAL_ERROR "Only *nix like systems are supported.")
 endif()

 # set default build type if not specified by user
 if(NOT CMAKE_BUILD_TYPE)
     set(CMAKE_BUILD_TYPE debug)
 endif()

 set(CMAKE_C_FLAGS         "${CMAKE_C_FLAGS} -Wall -Wextra -std=gnu99")
 set(CMAKE_C_FLAGS_RELEASE "-O3 -DNDEBUG")
 set(CMAKE_C_FLAGS_PACKAGE "-g -O3 -DNDEBUG")
 set(CMAKE_C_FLAGS_DEBUG   "-g -Og")

 # options
 if((CMAKE_BUILD_TYPE STREQUAL debug) OR (CMAKE_BUILD_TYPE STREQUAL Package))
     option(ENABLE_BUILD_TESTS "Build tests" ON)
     option(ENABLE_VALGRIND_TESTS "Build tests with valgrind" ON)
 else()
     option(ENABLE_BUILD_TESTS "Build tests" OFF)
     option(ENABLE_VALGRIND_TESTS "Build tests with valgrind" OFF)
 endif()
 option(ENABLE_CALLGRIND_TESTS "Build performance tests to be run with callgrind" OFF)

 option(ENABLE_CACHE "Enable data caching for schemas and hash tables for data (time-efficient at the cost of increased space-complexity)" ON)
 option(ENABLE_LATEST_REVISIONS "Enable reusing of latest revisions of schemas" ON)
 option(ENABLE_LYD_PRIV "Add a private pointer also to struct lyd_node (data node structure), just like in struct lys_node, for arbitrary user data" OFF)
 option(ENABLE_FUZZ_TARGETS "Build target programs suitable for fuzzing with AFL" OFF)
 set(PLUGINS_DIR "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/libyang${LIBYANG_MAJOR_SOVERSION}" CACHE STRING "Directory with libyang plugins (extensions and user types), should include major SO version")

 if(ENABLE_CACHE)
     set(LY_ENABLED_CACHE 1)
 endif()
 if(ENABLE_LATEST_REVISIONS)
     set(LY_ENABLED_LATEST_REVISIONS 1)
 endif()
 if(ENABLE_LYD_PRIV)
     set(LY_ENABLED_LYD_PRIV 1)
 endif()

 if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
     set(COMPILER_UNUSED_ATTR "UNUSED_ ## x __attribute__((__unused__))")
     set(COMPILER_PACKED_ATTR "__attribute__((__packed__))")
 elseif(CMAKE_C_COMPILER_ID STREQUAL "Clang")
     # require at least clang 3.0
     if (CMAKE_C_COMPILER_VERSION VERSION_LESS 3.0)
         message(FATAL_ERROR "Clang version must be at least 3.0!")
     endif()
     set(COMPILER_UNUSED_ATTR "UNUSED_ ## x __attribute__((__unused__))")
     set(COMPILER_PACKED_ATTR "__attribute__((__packed__))")
 else()
     message(WARNING "You are using an unknown compiler, it must support C11 standard \"_Generic\" statement"
         " or the \"__builtin_types_compatible_p\" built-in function.")
     set(COMPILER_UNUSED_ATTR "UNUSED_ ## x")
     set(COMPILER_PACKED_ATTR "")
 endif()

 include_directories(${PROJECT_BINARY_DIR}/src ${PROJECT_SOURCE_DIR}/src)
 configure_file(${PROJECT_SOURCE_DIR}/src/libyang.h.in ${PROJECT_BINARY_DIR}/src/libyang.h @ONLY)
 configure_file(${PROJECT_SOURCE_DIR}/src/common.h.in ${PROJECT_BINARY_DIR}/src/common.h @ONLY)

 set(EXTENSIONS_PLUGINS_DIR_MACRO "${PLUGINS_DIR}/extensions")
 set(USER_TYPES_PLUGINS_DIR_MACRO "${PLUGINS_DIR}/user_types")

 # setup bindings
 set(GEN_LANGUAGE_BINDINGS 0 CACHE BOOL "Enable language bindings generation.")
 set(GEN_CPP_BINDINGS 1 CACHE BOOL "Enable C++ bindings.")
 # Python bindings depend on C++ bindings because of SWIG
 set(GEN_PYTHON_BINDINGS 1 CACHE BOOL "Enable Python bindings.")
 set(GEN_PYTHON_VERSION "3" CACHE STRING "Python version")
 set(GEN_JAVASCRIPT_BINDINGS 0 CACHE BOOL "Enable JavaScript bindings.")
 set(GEN_JAVA_BINDINGS 0 CACHE BOOL "Enable Java bindings.")

 find_package(FLEX)
 find_package(BISON)
 find_program(SED_TOOL NAMES sed)

 if(NOT BISON_FOUND)
     message(WARNING "Missing Bison.\nYou won't be able to generate source codes from changed flex/bison files.\nCompiling libyang should still works fine.")
 elseif (NOT FLEX_FOUND)
     message(WARNING "Missing Flex.\nYou won't be able to generate source codes from changed flex/bison files.\nCompiling libyang should still works fine.")
 else()
     if (BISON_VERSION VERSION_LESS 3)
         set(EMPTYDIR "")
     else ()
         set(EMPTYDIR "%empty")
     endif()
     configure_file(${PROJECT_SOURCE_DIR}/src/yang.y.in ${PROJECT_BINARY_DIR}/src/yang.y)
     add_custom_target(bison
         WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/src
         COMMAND bison -l -o parser_yang_bis.c --defines=parser_yang_bis.h ${PROJECT_BINARY_DIR}/src/yang.y
         COMMAND flex -8 -L -o parser_yang_lex.c --header-file=parser_yang_lex.h yang.l
         COMMAND ${SED_TOOL} -i 's/int yychar\;/int yychar\;\\nchar *s = NULL, *tmp_s = NULL, *ext_name = NULL\;\\nstruct lys_module *trg = NULL\;\\nstruct lys_node *tpdf_parent = NULL, *data_node = NULL\;\\nstruct lys_ext_instance_complex *ext_instance = NULL\;\\nint is_ext_instance\;\\nvoid *actual = NULL\;\\nenum yytokentype backup_type, actual_type = MODULE_KEYWORD\;\\nint64_t cnt_val = 0\;\\nint is_value = 0\;\\nvoid *yang_type = NULL\;/' parser_yang_bis.c
     )
 endif()

 # by default build shared library
 # static build requires static libpcre library
 option(ENABLE_STATIC "Build static (.a) library" OFF)

 set(libsrc
     src/common.c
     src/context.c
     src/log.c
     src/hash_table.c
     src/resolve.c
     src/validation.c
     src/xml.c
     src/parser.c
     src/parser_yin.c
     src/parser_xml.c
     src/parser_json.c
     src/parser_lyb.c
     src/parser_yang_bis.c
     src/parser_yang_lex.c
     src/parser_yang.c
     src/tree_schema.c
     src/tree_data.c
     src/plugins.c
     src/printer.c
     src/xpath.c
     src/printer_yang.c
     src/printer_yin.c
     src/printer_json_schema.c
     src/printer_xml.c
     src/printer_tree.c
     src/printer_info.c
     src/printer_json.c
     src/printer_lyb.c
     src/yang_types.c)

 set(lintsrc
     tools/lint/main.c
     tools/lint/main_ni.c
     tools/lint/commands.c
     tools/lint/completion.c
     tools/lint/configuration.c
     linenoise/linenoise.c)

 set(resrc
     tools/re/main.c)

 set(yang2yinsrc
     tools/yang2yin/main.c)

 set(headers
     src/tree_schema.h
     src/tree_data.h
     src/extensions.h
     src/user_types.h
     src/xml.h
     src/dict.h)

 # link compat
 use_compat()

 # create static libyang library
 if(ENABLE_STATIC)
     add_definitions(-DSTATIC)
     set(CMAKE_EXE_LINKER_FLAGS -static)
     set(CMAKE_FIND_LIBRARY_SUFFIXES .a)
     set(CMAKE_EXE_LINK_DYNAMIC_C_FLAGS)       # remove -Wl,-Bdynamic
     set(CMAKE_EXE_LINK_DYNAMIC_CXX_FLAGS)
     add_library(yang STATIC ${libsrc} $<TARGET_OBJECTS:compat>)

     # switch off the tests
     if(ENABLE_BUILD_TESTS)
         message(WARNING "Tests are disabled in case of static build")
         set(ENABLE_BUILD_TESTS OFF)
         set(ENABLE_VALGRIND_TESTS OFF)
     endif(ENABLE_BUILD_TESTS)
     if(ENABLE_VALGRIND_TESTS)
         message(WARNING "Tests are disabled in case of static build")
         set(ENABLE_VALGRIND_TESTS OFF)
     endif(ENABLE_VALGRIND_TESTS)
 else()
     set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)
     add_library(yangobj OBJECT ${libsrc})
     add_library(yang SHARED $<TARGET_OBJECTS:yangobj> $<TARGET_OBJECTS:compat>)

     #only for tests with visible internal symbols
     add_library(yangobj_tests OBJECT ${libsrc})

     #link dl
     target_link_libraries(yang ${CMAKE_DL_LIBS})

     set_target_properties(yangobj PROPERTIES COMPILE_FLAGS "-fvisibility=hidden")
 endif()

 set_target_properties(yang PROPERTIES VERSION ${LIBYANG_SOVERSION_FULL} SOVERSION ${LIBYANG_SOVERSION})

 # link math
 target_link_libraries(yang m)

 # find pthreads
 set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
 find_package(Threads REQUIRED)
 target_link_libraries(yang ${CMAKE_THREAD_LIBS_INIT})

 # find PCRE library
 unset(PCRE_LIBRARY CACHE)
 find_package(PCRE REQUIRED)
 include_directories(${PCRE_INCLUDE_DIRS})
 target_link_libraries(yang ${PCRE_LIBRARIES})

 install(TARGETS yang DESTINATION ${CMAKE_INSTALL_LIBDIR})
 install(FILES ${headers} ${PROJECT_BINARY_DIR}/src/libyang.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/libyang)

 # generate pkg-config file
 configure_file("libyang.pc.in" "libyang.pc" @ONLY)
 find_package(PkgConfig)
 if(PKG_CONFIG_FOUND)
     install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libyang.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
     # check that pkg-config includes the used path
     execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --variable pc_path pkg-config RESULT_VARIABLE RETURN OUTPUT_VARIABLE PC_PATH ERROR_QUIET)
     if(RETURN EQUAL 0)
         string(STRIP "${PC_PATH}" PC_PATH)
         set(PC_PATH "${PC_PATH}:$ENV{PKG_CONFIG_PATH}")
         string(REGEX MATCH "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/pkgconfig" SUBSTR "${PC_PATH}")
         string(LENGTH "${SUBSTR}" SUBSTR_LEN)
         if(SUBSTR_LEN EQUAL 0)
             message(WARNING "pkg-config will not detect the new package after installation, adjust PKG_CONFIG_PATH using \"export PKG_CONFIG_PATH=\${PKG_CONFIG_PATH}:${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/pkgconfig\".")
         endif()
     endif()
 endif()

 # generate doxygen documentation for libyang API
 find_package(Doxygen)
 if(DOXYGEN_FOUND)
     find_program(DOT_PATH dot PATH_SUFFIXES graphviz2.38/bin graphviz/bin)
     if(DOT_PATH)
         set(HAVE_DOT "YES")
     else()
         set(HAVE_DOT "NO")
         message(AUTHOR_WARNING "Doxygen: to generate UML diagrams please install graphviz")
     endif()
     add_custom_target(doc
             COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_BINARY_DIR}/Doxyfile
             WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
     configure_file(Doxyfile.in Doxyfile)
 endif()

 # clean cmake cache
 add_custom_target(cclean
         COMMAND make clean
         COMMAND find . -iname '*cmake*' -not -name CMakeLists.txt -not -path './CMakeModules*' -exec rm -rf {} +
         COMMAND rm -rf Makefile Doxyfile
         WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})

 # YANG extensions plugins
 set(EXTENSIONS_LIST "nacm" "metadata" "yangdata")
 # if the tests are enabled, build libyang_ext_test
 if(ENABLE_BUILD_TESTS)
     find_package(CMocka 1.0.0)
     if(CMOCKA_FOUND AND CMAKE_BUILD_TYPE MATCHES debug)
         list(APPEND EXTENSIONS_LIST "libyang_ext_test")
     endif(CMOCKA_FOUND AND CMAKE_BUILD_TYPE MATCHES debug)
 endif()

 if(ENABLE_STATIC)
     set(EXTENSIONS_LIST_SIZE " 0 ")
     set(ITEM 0)
     foreach(EXTENSION ${EXTENSIONS_LIST})
         add_library(${EXTENSION} STATIC "src/extensions/${EXTENSION}.c")
         target_link_libraries(yang ${EXTENSION})
         set(EXTENSIONS_LIST_SIZE "${EXTENSIONS_LIST_SIZE} + lyext_size(${EXTENSION})")
         set(EXTERN_EXTENSIONS_LIST "${EXTERN_EXTENSIONS_LIST}extern struct lyext_plugin_list ${EXTENSION}[];\n")
         set(MEMCPY_EXTENSIONS_LIST "${MEMCPY_EXTENSIONS_LIST}    lyext_add(plugin, count, ${EXTENSION});\n")
         set(STATIC_LOADED_PLUGINS "${STATIC_LOADED_PLUGINS} \"${EXTENSION}\",")
         MATH(EXPR ITEM "${ITEM}+1")
     endforeach()
 else()
     add_subdirectory(src/extensions)
 endif(ENABLE_STATIC)

 # YANG user types plugins
 set(USER_TYPE_LIST "user_yang_types" "user_inet_types")
 if(ENABLE_STATIC)
     set(USER_TYPE_LIST_SIZE " 0 ")
     foreach(USER_TYPE ${USER_TYPE_LIST})
         add_library(${USER_TYPE} STATIC "src/user_types/${USER_TYPE}.c")
         target_link_libraries(yang ${USER_TYPE})
         set(USER_TYPE_LIST_SIZE "${USER_TYPE_LIST_SIZE} + lytype_size(${USER_TYPE})")
         set(EXTERN_USER_TYPE_LIST "${EXTERN_USER_TYPE_LIST}extern struct lytype_plugin_list ${USER_TYPE}[];\n")
         set(MEMCPY_USER_TYPE_LIST "${MEMCPY_USER_TYPE_LIST}    lytype_add(plugin, count, ${USER_TYPE});\n")
         set(STATIC_LOADED_PLUGINS "${STATIC_LOADED_PLUGINS} \"${USER_TYPE}\",")
         MATH(EXPR ITEM "${ITEM}+1")
     endforeach()
     set(STATIC_LOADED_PLUGINS_COUNT "${ITEM}")
 else()
     add_subdirectory(src/user_types)
 endif()

 configure_file(${PROJECT_SOURCE_DIR}/src/plugin_config.h.in ${PROJECT_BINARY_DIR}/src/plugin_config.h)

 # yanglint
 add_executable(yanglint ${lintsrc} $<TARGET_OBJECTS:compat>)
 target_link_libraries(yanglint yang)
 install(TARGETS yanglint DESTINATION ${CMAKE_INSTALL_BINDIR})
 install(FILES ${PROJECT_SOURCE_DIR}/tools/lint/yanglint.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)

 #yangre
 add_executable(yangre ${resrc} $<TARGET_OBJECTS:compat>)
 target_link_libraries(yangre yang)
 install(TARGETS yangre DESTINATION ${CMAKE_INSTALL_BINDIR})
 install(FILES ${PROJECT_SOURCE_DIR}/tools/re/yangre.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)

 # yang2yin
 add_executable(yang2yin ${yang2yinsrc})

 # packages
 add_subdirectory(packages)

 # uninstall
 add_custom_target(uninstall "${CMAKE_COMMAND}" -P "${CMAKE_MODULE_PATH}/uninstall.cmake")

 if(ENABLE_VALGRIND_TESTS)
     set(ENABLE_BUILD_TESTS ON)
 endif()

 if(ENABLE_BUILD_TESTS)
     if(CMOCKA_FOUND)
         enable_testing()
         add_subdirectory(tests)
     else(CMOCKA_FOUND)
         message(STATUS "Disabling tests because of missing CMocka")
         set(ENABLE_BUILD_TESTS NO)
     endif(CMOCKA_FOUND)
 endif()

 if(ENABLE_BUILD_FUZZ_TARGETS)
     add_subdirectory(tests/fuzz)
 endif()

 if(GEN_LANGUAGE_BINDINGS AND GEN_CPP_BINDINGS)
     add_subdirectory(swig)
 endif()
	cmake_minimum_required(VERSION 2.8.12)

	# force out-of-source build
	if(NOT FORCE_INSRC_BUILD AND ${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
	message(FATAL_ERROR "In-source build is not allowed. Please make a standalone build directory and run CMake from there. You may need to remove CMakeCache.txt.")
	endif()

	project(libyang C)

	# include custom Modules
	set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/CMakeModules/")

	include(GNUInstallDirs)
	include(CheckSymbolExists)
	include(UseCompat)

	set(LIBYANG_DESCRIPTION "libyang is YANG data modelling language parser and toolkit written (and providing API) in C.")

	# Correct RPATH usage on OS X
	set(CMAKE_MACOSX_RPATH TRUE)

	# Version of the project
	# Generic version of not only the library. Major version is reserved for really big changes of the project,
	# minor version changes with added functionality (new tool, functionality of the tool or library, ...) and
	# micro version is changed with a set of small changes or bugfixes anywhere in the project.
	set(LIBYANG_MAJOR_VERSION 1)
	set(LIBYANG_MINOR_VERSION 0)
	set(LIBYANG_MICRO_VERSION 206)
	set(LIBYANG_VERSION ${LIBYANG_MAJOR_VERSION}.${LIBYANG_MINOR_VERSION}.${LIBYANG_MICRO_VERSION})

	# Version of the library
	# Major version is changed with every backward non-compatible API/ABI change in libyang, minor version changes
	# with backward compatible change and micro version is connected with any internal change of the library.
	set(LIBYANG_MAJOR_SOVERSION 1)
	set(LIBYANG_MINOR_SOVERSION 9)
	set(LIBYANG_MICRO_SOVERSION 23)
	set(LIBYANG_SOVERSION_FULL ${LIBYANG_MAJOR_SOVERSION}.${LIBYANG_MINOR_SOVERSION}.${LIBYANG_MICRO_SOVERSION})
	set(LIBYANG_SOVERSION ${LIBYANG_MAJOR_SOVERSION})

	# check the supported platform
	if(NOT UNIX)
	message(FATAL_ERROR "Only *nix like systems are supported.")
	endif()

	# set default build type if not specified by user
	if(NOT CMAKE_BUILD_TYPE)
	set(CMAKE_BUILD_TYPE debug)
	endif()

	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -std=gnu99")
	set(CMAKE_C_FLAGS_RELEASE "-O3 -DNDEBUG")
	set(CMAKE_C_FLAGS_PACKAGE "-g -O3 -DNDEBUG")
	set(CMAKE_C_FLAGS_DEBUG "-g -Og")

	# options
	if((CMAKE_BUILD_TYPE STREQUAL debug) OR (CMAKE_BUILD_TYPE STREQUAL Package))
	option(ENABLE_BUILD_TESTS "Build tests" ON)
	option(ENABLE_VALGRIND_TESTS "Build tests with valgrind" ON)
	else()
	option(ENABLE_BUILD_TESTS "Build tests" OFF)
	option(ENABLE_VALGRIND_TESTS "Build tests with valgrind" OFF)
	endif()
	option(ENABLE_CALLGRIND_TESTS "Build performance tests to be run with callgrind" OFF)

	option(ENABLE_CACHE "Enable data caching for schemas and hash tables for data (time-efficient at the cost of increased space-complexity)" ON)
	option(ENABLE_LATEST_REVISIONS "Enable reusing of latest revisions of schemas" ON)
	option(ENABLE_LYD_PRIV "Add a private pointer also to struct lyd_node (data node structure), just like in struct lys_node, for arbitrary user data" OFF)
	option(ENABLE_FUZZ_TARGETS "Build target programs suitable for fuzzing with AFL" OFF)
	set(PLUGINS_DIR "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/libyang${LIBYANG_MAJOR_SOVERSION}" CACHE STRING "Directory with libyang plugins (extensions and user types), should include major SO version")

	if(ENABLE_CACHE)
	set(LY_ENABLED_CACHE 1)
	endif()
	if(ENABLE_LATEST_REVISIONS)
	set(LY_ENABLED_LATEST_REVISIONS 1)
	endif()
	if(ENABLE_LYD_PRIV)
	set(LY_ENABLED_LYD_PRIV 1)
	endif()

	if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
	set(COMPILER_UNUSED_ATTR "UNUSED_ ## x __attribute__((__unused__))")
	set(COMPILER_PACKED_ATTR "__attribute__((__packed__))")
	elseif(CMAKE_C_COMPILER_ID STREQUAL "Clang")
	# require at least clang 3.0
	if (CMAKE_C_COMPILER_VERSION VERSION_LESS 3.0)
	message(FATAL_ERROR "Clang version must be at least 3.0!")
	endif()
	set(COMPILER_UNUSED_ATTR "UNUSED_ ## x __attribute__((__unused__))")
	set(COMPILER_PACKED_ATTR "__attribute__((__packed__))")
	else()
	message(WARNING "You are using an unknown compiler, it must support C11 standard \"_Generic\" statement"
	" or the \"__builtin_types_compatible_p\" built-in function.")
	set(COMPILER_UNUSED_ATTR "UNUSED_ ## x")
	set(COMPILER_PACKED_ATTR "")
	endif()

	include_directories(${PROJECT_BINARY_DIR}/src ${PROJECT_SOURCE_DIR}/src)
	configure_file(${PROJECT_SOURCE_DIR}/src/libyang.h.in ${PROJECT_BINARY_DIR}/src/libyang.h @ONLY)
	configure_file(${PROJECT_SOURCE_DIR}/src/common.h.in ${PROJECT_BINARY_DIR}/src/common.h @ONLY)

	set(EXTENSIONS_PLUGINS_DIR_MACRO "${PLUGINS_DIR}/extensions")
	set(USER_TYPES_PLUGINS_DIR_MACRO "${PLUGINS_DIR}/user_types")

	# setup bindings
	set(GEN_LANGUAGE_BINDINGS 0 CACHE BOOL "Enable language bindings generation.")
	set(GEN_CPP_BINDINGS 1 CACHE BOOL "Enable C++ bindings.")
	# Python bindings depend on C++ bindings because of SWIG
	set(GEN_PYTHON_BINDINGS 1 CACHE BOOL "Enable Python bindings.")
	set(GEN_PYTHON_VERSION "3" CACHE STRING "Python version")
	set(GEN_JAVASCRIPT_BINDINGS 0 CACHE BOOL "Enable JavaScript bindings.")
	set(GEN_JAVA_BINDINGS 0 CACHE BOOL "Enable Java bindings.")

	find_package(FLEX)
	find_package(BISON)
	find_program(SED_TOOL NAMES sed)

	if(NOT BISON_FOUND)
	message(WARNING "Missing Bison.\nYou won't be able to generate source codes from changed flex/bison files.\nCompiling libyang should still works fine.")
	elseif (NOT FLEX_FOUND)
	message(WARNING "Missing Flex.\nYou won't be able to generate source codes from changed flex/bison files.\nCompiling libyang should still works fine.")
	else()
	if (BISON_VERSION VERSION_LESS 3)
	set(EMPTYDIR "")
	else ()
	set(EMPTYDIR "%empty")
	endif()
	configure_file(${PROJECT_SOURCE_DIR}/src/yang.y.in ${PROJECT_BINARY_DIR}/src/yang.y)
	add_custom_target(bison
	WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/src
	COMMAND bison -l -o parser_yang_bis.c --defines=parser_yang_bis.h ${PROJECT_BINARY_DIR}/src/yang.y
	COMMAND flex -8 -L -o parser_yang_lex.c --header-file=parser_yang_lex.h yang.l
	COMMAND ${SED_TOOL} -i 's/int yychar\;/int yychar\;\\nchar s = NULL, tmp_s = NULL, ext_name = NULL\;\\nstruct lys_module trg = NULL\;\\nstruct lys_node tpdf_parent = NULL, data_node = NULL\;\\nstruct lys_ext_instance_complex ext_instance = NULL\;\\nint is_ext_instance\;\\nvoid actual = NULL\;\\nenum yytokentype backup_type, actual_type = MODULE_KEYWORD\;\\nint64_t cnt_val = 0\;\\nint is_value = 0\;\\nvoid *yang_type = NULL\;/' parser_yang_bis.c
	)
	endif()

	# by default build shared library
	# static build requires static libpcre library
	option(ENABLE_STATIC "Build static (.a) library" OFF)

	set(libsrc
	src/common.c
	src/context.c
	src/log.c
	src/hash_table.c
	src/resolve.c
	src/validation.c
	src/xml.c
	src/parser.c
	src/parser_yin.c
	src/parser_xml.c
	src/parser_json.c
	src/parser_lyb.c
	src/parser_yang_bis.c
	src/parser_yang_lex.c
	src/parser_yang.c
	src/tree_schema.c
	src/tree_data.c
	src/plugins.c
	src/printer.c
	src/xpath.c
	src/printer_yang.c
	src/printer_yin.c
	src/printer_json_schema.c
	src/printer_xml.c
	src/printer_tree.c
	src/printer_info.c
	src/printer_json.c
	src/printer_lyb.c
	src/yang_types.c)

	set(lintsrc
	tools/lint/main.c
	tools/lint/main_ni.c
	tools/lint/commands.c
	tools/lint/completion.c
	tools/lint/configuration.c
	linenoise/linenoise.c)

	set(resrc
	tools/re/main.c)

	set(yang2yinsrc
	tools/yang2yin/main.c)

	set(headers
	src/tree_schema.h
	src/tree_data.h
	src/extensions.h
	src/user_types.h
	src/xml.h
	src/dict.h)

	# link compat
	use_compat()

	# create static libyang library
	if(ENABLE_STATIC)
	add_definitions(-DSTATIC)
	set(CMAKE_EXE_LINKER_FLAGS -static)
	set(CMAKE_FIND_LIBRARY_SUFFIXES .a)
	set(CMAKE_EXE_LINK_DYNAMIC_C_FLAGS) # remove -Wl,-Bdynamic
	set(CMAKE_EXE_LINK_DYNAMIC_CXX_FLAGS)
	add_library(yang STATIC ${libsrc} $<TARGET_OBJECTS:compat>)

	# switch off the tests
	if(ENABLE_BUILD_TESTS)
	message(WARNING "Tests are disabled in case of static build")
	set(ENABLE_BUILD_TESTS OFF)
	set(ENABLE_VALGRIND_TESTS OFF)
	endif(ENABLE_BUILD_TESTS)
	if(ENABLE_VALGRIND_TESTS)
	message(WARNING "Tests are disabled in case of static build")
	set(ENABLE_VALGRIND_TESTS OFF)
	endif(ENABLE_VALGRIND_TESTS)
	else()
	set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)
	add_library(yangobj OBJECT ${libsrc})
	add_library(yang SHARED $<TARGET_OBJECTS:yangobj> $<TARGET_OBJECTS:compat>)

	#only for tests with visible internal symbols
	add_library(yangobj_tests OBJECT ${libsrc})

	#link dl
	target_link_libraries(yang ${CMAKE_DL_LIBS})

	set_target_properties(yangobj PROPERTIES COMPILE_FLAGS "-fvisibility=hidden")
	endif()

	set_target_properties(yang PROPERTIES VERSION ${LIBYANG_SOVERSION_FULL} SOVERSION ${LIBYANG_SOVERSION})

	# link math
	target_link_libraries(yang m)

	# find pthreads
	set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
	find_package(Threads REQUIRED)
	target_link_libraries(yang ${CMAKE_THREAD_LIBS_INIT})

	# find PCRE library
	unset(PCRE_LIBRARY CACHE)
	find_package(PCRE REQUIRED)
	include_directories(${PCRE_INCLUDE_DIRS})
	target_link_libraries(yang ${PCRE_LIBRARIES})

	install(TARGETS yang DESTINATION ${CMAKE_INSTALL_LIBDIR})
	install(FILES ${headers} ${PROJECT_BINARY_DIR}/src/libyang.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/libyang)

	# generate pkg-config file
	configure_file("libyang.pc.in" "libyang.pc" @ONLY)
	find_package(PkgConfig)
	if(PKG_CONFIG_FOUND)
	install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libyang.pc" DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
	# check that pkg-config includes the used path
	execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --variable pc_path pkg-config RESULT_VARIABLE RETURN OUTPUT_VARIABLE PC_PATH ERROR_QUIET)
	if(RETURN EQUAL 0)
	string(STRIP "${PC_PATH}" PC_PATH)
	set(PC_PATH "${PC_PATH}:$ENV{PKG_CONFIG_PATH}")
	string(REGEX MATCH "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/pkgconfig" SUBSTR "${PC_PATH}")
	string(LENGTH "${SUBSTR}" SUBSTR_LEN)
	if(SUBSTR_LEN EQUAL 0)
	message(WARNING "pkg-config will not detect the new package after installation, adjust PKG_CONFIG_PATH using \"export PKG_CONFIG_PATH=\${PKG_CONFIG_PATH}:${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/pkgconfig\".")
	endif()
	endif()
	endif()

	# generate doxygen documentation for libyang API
	find_package(Doxygen)
	if(DOXYGEN_FOUND)
	find_program(DOT_PATH dot PATH_SUFFIXES graphviz2.38/bin graphviz/bin)
	if(DOT_PATH)
	set(HAVE_DOT "YES")
	else()
	set(HAVE_DOT "NO")
	message(AUTHOR_WARNING "Doxygen: to generate UML diagrams please install graphviz")
	endif()
	add_custom_target(doc
	COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_BINARY_DIR}/Doxyfile
	WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
	configure_file(Doxyfile.in Doxyfile)
	endif()

	# clean cmake cache
	add_custom_target(cclean
	COMMAND make clean
	COMMAND find . -iname 'cmake' -not -name CMakeLists.txt -not -path './CMakeModules*' -exec rm -rf {} +
	COMMAND rm -rf Makefile Doxyfile
	WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})

	# YANG extensions plugins
	set(EXTENSIONS_LIST "nacm" "metadata" "yangdata")
	# if the tests are enabled, build libyang_ext_test
	if(ENABLE_BUILD_TESTS)
	find_package(CMocka 1.0.0)
	if(CMOCKA_FOUND AND CMAKE_BUILD_TYPE MATCHES debug)
	list(APPEND EXTENSIONS_LIST "libyang_ext_test")
	endif(CMOCKA_FOUND AND CMAKE_BUILD_TYPE MATCHES debug)
	endif()

	if(ENABLE_STATIC)
	set(EXTENSIONS_LIST_SIZE " 0 ")
	set(ITEM 0)
	foreach(EXTENSION ${EXTENSIONS_LIST})
	add_library(${EXTENSION} STATIC "src/extensions/${EXTENSION}.c")
	target_link_libraries(yang ${EXTENSION})
	set(EXTENSIONS_LIST_SIZE "${EXTENSIONS_LIST_SIZE} + lyext_size(${EXTENSION})")
	set(EXTERN_EXTENSIONS_LIST "${EXTERN_EXTENSIONS_LIST}extern struct lyext_plugin_list ${EXTENSION}[];\n")
	set(MEMCPY_EXTENSIONS_LIST "${MEMCPY_EXTENSIONS_LIST} lyext_add(plugin, count, ${EXTENSION});\n")
	set(STATIC_LOADED_PLUGINS "${STATIC_LOADED_PLUGINS} \"${EXTENSION}\",")
	MATH(EXPR ITEM "${ITEM}+1")
	endforeach()
	else()
	add_subdirectory(src/extensions)
	endif(ENABLE_STATIC)

	# YANG user types plugins
	set(USER_TYPE_LIST "user_yang_types" "user_inet_types")
	if(ENABLE_STATIC)
	set(USER_TYPE_LIST_SIZE " 0 ")
	foreach(USER_TYPE ${USER_TYPE_LIST})
	add_library(${USER_TYPE} STATIC "src/user_types/${USER_TYPE}.c")
	target_link_libraries(yang ${USER_TYPE})
	set(USER_TYPE_LIST_SIZE "${USER_TYPE_LIST_SIZE} + lytype_size(${USER_TYPE})")
	set(EXTERN_USER_TYPE_LIST "${EXTERN_USER_TYPE_LIST}extern struct lytype_plugin_list ${USER_TYPE}[];\n")
	set(MEMCPY_USER_TYPE_LIST "${MEMCPY_USER_TYPE_LIST} lytype_add(plugin, count, ${USER_TYPE});\n")
	set(STATIC_LOADED_PLUGINS "${STATIC_LOADED_PLUGINS} \"${USER_TYPE}\",")
	MATH(EXPR ITEM "${ITEM}+1")
	endforeach()
	set(STATIC_LOADED_PLUGINS_COUNT "${ITEM}")
	else()
	add_subdirectory(src/user_types)
	endif()

	configure_file(${PROJECT_SOURCE_DIR}/src/plugin_config.h.in ${PROJECT_BINARY_DIR}/src/plugin_config.h)

	# yanglint
	add_executable(yanglint ${lintsrc} $<TARGET_OBJECTS:compat>)
	target_link_libraries(yanglint yang)
	install(TARGETS yanglint DESTINATION ${CMAKE_INSTALL_BINDIR})
	install(FILES ${PROJECT_SOURCE_DIR}/tools/lint/yanglint.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)

	#yangre
	add_executable(yangre ${resrc} $<TARGET_OBJECTS:compat>)
	target_link_libraries(yangre yang)
	install(TARGETS yangre DESTINATION ${CMAKE_INSTALL_BINDIR})
	install(FILES ${PROJECT_SOURCE_DIR}/tools/re/yangre.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)

	# yang2yin
	add_executable(yang2yin ${yang2yinsrc})

	# packages
	add_subdirectory(packages)

	# uninstall
	add_custom_target(uninstall "${CMAKE_COMMAND}" -P "${CMAKE_MODULE_PATH}/uninstall.cmake")

	if(ENABLE_VALGRIND_TESTS)
	set(ENABLE_BUILD_TESTS ON)
	endif()

	if(ENABLE_BUILD_TESTS)
	if(CMOCKA_FOUND)
	enable_testing()
	add_subdirectory(tests)
	else(CMOCKA_FOUND)
	message(STATUS "Disabling tests because of missing CMocka")
	set(ENABLE_BUILD_TESTS NO)
	endif(CMOCKA_FOUND)
	endif()

	if(ENABLE_BUILD_FUZZ_TARGETS)
	add_subdirectory(tests/fuzz)
	endif()

	if(GEN_LANGUAGE_BINDINGS AND GEN_CPP_BINDINGS)
	add_subdirectory(swig)
	endif()