cmake_minimum_required(VERSION 2.8.12)

project(libyang C)

include(GNUInstallDirs)

include(CheckSymbolExists)

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)

# set version

set(LIBYANG_MAJOR_VERSION 0)

set(LIBYANG_MINOR_VERSION 16)

set(LIBYANG_MICRO_VERSION 105)

set(LIBYANG_VERSION ${LIBYANG_MAJOR_VERSION}.${LIBYANG_MINOR_VERSION}.${LIBYANG_MICRO_VERSION})

set(LIBYANG_SOVERSION ${LIBYANG_MAJOR_VERSION}.${LIBYANG_MINOR_VERSION})

# set default build type if not specified by user

if(NOT CMAKE_BUILD_TYPE)

    set(CMAKE_BUILD_TYPE debug)

endif()

set(CMAKE_C_STANDARD 11)

set(CMAKE_C_FLAGS         "${CMAKE_C_FLAGS} -Wall -Wextra")

set(CMAKE_C_FLAGS_RELEASE "-O2 -DNDEBUG")

set(CMAKE_C_FLAGS_PACKAGE "-g -O2 -DNDEBUG")

set(CMAKE_C_FLAGS_DEBUG   "-g -O0")

# 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)

set(PLUGINS_DIR "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}/libyang" CACHE STRING "Directory with libyang plugins (extensions and user types)")

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")

# include custom Modules

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/CMakeModules/")

# 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(DEB_BUILDER NAMES debuild)

find_program(RPM_BUILDER NAMES rpmbuild)

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()

if (NOT DEFINED ENV{TRAVIS_BRANCH})

    execute_process(COMMAND "git" "rev-parse" "--abbrev-ref" "HEAD"

                    OUTPUT_VARIABLE GIT_BRANCH

                    OUTPUT_STRIP_TRAILING_WHITESPACE

                    ERROR_QUIET

                )

    if (NOT GIT_BRANCH)

        set(ENV{TRAVIS_BRANCH} "master")

    else()

        if (GIT_BRANCH MATCHES "master|devel")

            set(ENV{TRAVIS_BRANCH} ${GIT_BRANCH})

        else()

            set(ENV{TRAVIS_BRANCH} "master")

        endif()

    endif()

    set(GIT_BRANCH $ENV{TRAVIS_BRANCH})

endif()

if ($ENV{TRAVIS_BRANCH} STREQUAL "master")

    set(PACKAGE_NAME "libyang")

    set(PACKAGE_PART_NAME "")

    set(BRANCH "master")

    set(BUILD_TYPE "Package")

    set(CONFLICT_PACKAGE_NAME "libyang-experimental")

else ()

    set(PACKAGE_NAME "libyang-experimental")

    set(PACKAGE_PART_NAME "-experimental")

    set(BRANCH "devel")

    set(BUILD_TYPE "debug")

    set(CONFLICT_PACKAGE_NAME "libyang")

endif()

# change version in config files

configure_file(${PROJECT_SOURCE_DIR}/packages/libyang.spec.in ${PROJECT_BINARY_DIR}/build-packages/libyang.spec)

configure_file(${PROJECT_SOURCE_DIR}/packages/libyang.dsc.in ${PROJECT_BINARY_DIR}/build-packages/libyang.dsc)

configure_file(${PROJECT_SOURCE_DIR}/packages/debian.control.in ${PROJECT_BINARY_DIR}/build-packages/debian.control @ONLY)

configure_file(${PROJECT_SOURCE_DIR}/packages/debian.rules.in ${PROJECT_BINARY_DIR}/build-packages/debian.rules)

if (NOT DEB_BUILDER)

    message(WARNING "Missing tools (devscripts, debhelper package) for building deb package.\nYou won't be able to generate deb package from source code.\nCompiling libyang should still works fine.")

else ()

    # target for local build deb package

    add_custom_target(build-deb

                      WORKING_DIRECTORY ${PROJECT_BINARY_DIR}

                      COMMAND build-packages/local-deb.sh

    )

    configure_file(${PROJECT_SOURCE_DIR}/packages/local-deb.sh.in ${PROJECT_BINARY_DIR}/build-packages/local-deb.sh @ONLY)

endif()

if (NOT RPM_BUILDER)

    message(WARNING "Missing tools (rpm package) for building rpm package. \nYou won't be able to generate rpm package from source code.\nCompiling libyang should still works fine.")

else ()

    # target for local build rpm package

    string(REPLACE ${PROJECT_SOURCE_DIR} "." EXCLUDE_BUILD_DIR ${PROJECT_BINARY_DIR})

    add_custom_target(build-rpm

                      WORKING_DIRECTORY ${PROJECT_BINARY_DIR}

                      COMMAND build-packages/local-rpm.sh

    )

    configure_file(${PROJECT_SOURCE_DIR}/packages/local-rpm.sh.in ${PROJECT_BINARY_DIR}/build-packages/local-rpm.sh @ONLY)

endif()

# by default build shared library

# static build requires static libpcre library

option(ENABLE_STATIC "Build static (.a) library" OFF)

# check the supported platform

if(NOT UNIX)

    message(FATAL_ERROR "Only *nix like systems are supported.")

endif()

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)

check_symbol_exists(vdprintf "stdio.h;stdarg.h" HAVE_VDPRINTF)

if(HAVE_VDPRINTF)

    add_definitions(-DHAVE_VDPRINTF)

endif(HAVE_VDPRINTF)

# 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})

else()

    set(CMAKE_POSITION_INDEPENDENT_CODE TRUE)

    add_library(yangobj OBJECT ${libsrc})

    add_library(yang SHARED $<TARGET_OBJECTS:yangobj>)

    #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(ENABLE_STATIC)

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

# link math

target_link_libraries(yang m)

# find pthreads

set(CMAKE_THREAD_PREFER_PTHREAD TRUE)

find_package(Threads REQUIRED)

if(ENABLE_STATIC)

    target_link_libraries(yang -Wl,--whole-archive ${CMAKE_THREAD_LIBS_INIT} -Wl,--no-whole-archive)

else()

    target_link_libraries(yang ${CMAKE_THREAD_LIBS_INIT})

endif(ENABLE_STATIC)

# 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)

find_package(PkgConfig)

if(PKG_CONFIG_FOUND)

    # generate and install pkg-config file

    configure_file("libyang.pc.in" "libyang.pc" @ONLY)

    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(ENABLE_BUILD_TESTS)

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 ("user_ipv4" is just an example, not installed by default)

set(USER_TYPE_LIST "user_date_and_time")

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(ENABLE_STATIC)

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

# yanglint

add_executable(yanglint ${lintsrc})

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_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})

# 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(ENABLE_BUILD_TESTS)

if(GEN_LANGUAGE_BINDINGS AND GEN_CPP_BINDINGS)

    add_subdirectory(swig)

endif()