################################################################################ # # The main toxcore CMake build file. # # This file when processed with cmake produces: # - A number of small libraries (.a/.so/...) containing independent components # of toxcore. E.g. the DHT has its own library, and the system/network # abstractions are in their own library as well. These libraries are not # installed on `make install`. The toxav, and toxencryptsave libraries are # also not installed. # - A number of small programs, statically linked if possible. # - One big library containing all of the toxcore, toxav, and toxencryptsave # code. # ################################################################################ cmake_minimum_required(VERSION 3.16) cmake_policy(VERSION 3.16) project(toxcore) list(APPEND CMAKE_MODULE_PATH ${toxcore_SOURCE_DIR}/cmake) option(FLAT_OUTPUT_STRUCTURE "Whether to produce output artifacts in ${CMAKE_BINARY_DIR}/{bin,lib}" OFF) if(FLAT_OUTPUT_STRUCTURE) set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib) set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib) set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin) endif() set_source_files_properties( toxcore/mono_time.c toxcore/network.c toxcore/tox.c toxcore/util.c PROPERTIES SKIP_UNITY_BUILD_INCLUSION TRUE) ################################################################################ # # :: Version management # ################################################################################ # This version is for the entire project. All libraries (core, av, ...) move in # versions in a synchronised way. set(PROJECT_VERSION_MAJOR "0") set(PROJECT_VERSION_MINOR "2") set(PROJECT_VERSION_PATCH "19") set(PROJECT_VERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}") # set .so library version / following libtool scheme # https://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info file(STRINGS ${toxcore_SOURCE_DIR}/so.version SOVERSION_CURRENT REGEX "^CURRENT=[0-9]+$") string(SUBSTRING "${SOVERSION_CURRENT}" 8 -1 SOVERSION_CURRENT) file(STRINGS ${toxcore_SOURCE_DIR}/so.version SOVERSION_REVISION REGEX "^REVISION=[0-9]+$") string(SUBSTRING "${SOVERSION_REVISION}" 9 -1 SOVERSION_REVISION) file(STRINGS ${toxcore_SOURCE_DIR}/so.version SOVERSION_AGE REGEX "^AGE=[0-9]+$") string(SUBSTRING "${SOVERSION_AGE}" 4 -1 SOVERSION_AGE) # account for some libtool magic, see other/version-sync script for details math(EXPR SOVERSION_MAJOR ${SOVERSION_CURRENT}-${SOVERSION_AGE}) set(SOVERSION "${SOVERSION_MAJOR}.${SOVERSION_AGE}.${SOVERSION_REVISION}") message("SOVERSION: ${SOVERSION}") ################################################################################ # # :: Dependencies and configuration # ################################################################################ include(CTest) include(ModulePackage) include(StrictAbi) include(GNUInstallDirs) if(APPLE) include(MacRpath) endif() enable_testing() find_package(GTest) set(CMAKE_MACOSX_RPATH ON) # Set standard version for compiler. if(MSVC AND MSVC_TOOLSET_VERSION LESS 143) # https://developercommunity.visualstudio.com/t/older-winsdk-headers-are-incompatible-with-zcprepr/1593479 set(CMAKE_C_STANDARD 99) else() set(CMAKE_C_STANDARD 11) endif() set(CMAKE_CXX_STANDARD 17) set(CMAKE_C_EXTENSIONS OFF) set(CMAKE_CXX_EXTENSIONS OFF) message(STATUS "Supported C compiler features = ${CMAKE_C_COMPILE_FEATURES}") message(STATUS "Supported C++ compiler features = ${CMAKE_CXX_COMPILE_FEATURES}") # Enable some warnings if we know the compiler. if(MSVC) add_compile_options(/W4 /analyze) add_compile_options(/wd4100) # unreferenced formal parameter add_compile_options(/wd4267) # narrowing conversion add_compile_options(/wd4244) # narrowing conversion add_compile_options(/wd4127) # conditional expression is constant add_compile_options(/wd4995) # #pragma deprecated add_compile_options(/wd4018) # signed/unsigned compare add_compile_options(/wd4310) # cast truncates constant value add_compile_options(/wd4389) # signed/unsigned compare add_compile_options(/wd4245) # signed/unsigned assign/return/function call add_compile_options(/wd4200) # nonstandard extension used: zero-sized array in struct/union add_compile_options(/wd4702) # unreachable code add_compile_options(/wd6340) # unsigned int passed to signed parameter add_compile_options(/wd6326) # potential comparison of a constant with another constant # TODO(iphydf): Look into these add_compile_options(/wd4996) # use WSAAddressToStringW() instead of WSAAddressToStringA() add_compile_options(/wd6255) # don't use alloca add_compile_options(/wd6385) # reading invalid data add_compile_options(/wd6001) # using uninitialized memory add_compile_options(/wd6101) # returning uninitialized memory add_compile_options(/wd6386) # buffer overrun add_compile_options(/wd6011) # NULL dereference add_compile_options(/wd6031) # sscanf return value ignored add_compile_options(/wd6387) # passing NULL to fwrite endif() set(MIN_LOGGER_LEVEL "" CACHE STRING "Logging level to use (TRACE, DEBUG, INFO, WARNING, ERROR)") if(MIN_LOGGER_LEVEL) if(("${MIN_LOGGER_LEVEL}" STREQUAL "TRACE") OR ("${MIN_LOGGER_LEVEL}" STREQUAL "DEBUG") OR ("${MIN_LOGGER_LEVEL}" STREQUAL "INFO") OR ("${MIN_LOGGER_LEVEL}" STREQUAL "WARNING") OR ("${MIN_LOGGER_LEVEL}" STREQUAL "ERROR")) add_definitions(-DMIN_LOGGER_LEVEL=LOGGER_LEVEL_${MIN_LOGGER_LEVEL}) else() message(FATAL_ERROR "Unknown value provided for MIN_LOGGER_LEVEL: \"${MIN_LOGGER_LEVEL}\", must be one of TRACE, DEBUG, INFO, WARNING or ERROR") endif() endif() option(EXPERIMENTAL_API "Install experimental header file with unstable API" OFF) option(USE_IPV6 "Use IPv6 in tests" ON) if(NOT USE_IPV6) add_definitions(-DUSE_IPV6=0) endif() option(BUILD_MISC_TESTS "Build additional tests" OFF) option(BUILD_FUN_UTILS "Build additional just for fun utilities" OFF) option(UNITTEST "Enable unit tests (disable if you don't have a working gmock or gtest)" ON) option(AUTOTEST "Enable autotests (mainly for CI)" OFF) if(AUTOTEST) option(NON_HERMETIC_TESTS "Whether to build and run tests that depend on an internet connection" OFF) option(PROXY_TEST "Enable proxy test (requires other/proxy/proxy_server.go to be running)" OFF) endif() option(BUILD_TOXAV "Whether to build the tox AV library" ON) option(MUST_BUILD_TOXAV "Fail the build if toxav cannot be built" OFF) option(DHT_BOOTSTRAP "Enable building of DHT_bootstrap" ON) option(BOOTSTRAP_DAEMON "Enable building of tox-bootstrapd" ON) if(BOOTSTRAP_DAEMON AND WIN32) message(WARNING "Building tox-bootstrapd for Windows is not supported, disabling") set(BOOTSTRAP_DAEMON OFF) endif() option(BUILD_FUZZ_TESTS "Build fuzzing harnesses" OFF) if(MSVC) option(MSVC_STATIC_SODIUM "Whether to link libsodium statically for MSVC" OFF) if(MSVC_STATIC_SODIUM) add_definitions(-DSODIUM_STATIC=1) endif() endif() include(Dependencies) if(MUST_BUILD_TOXAV) set(NO_TOXAV_ERROR_TYPE SEND_ERROR) else() set(NO_TOXAV_ERROR_TYPE WARNING) endif() if(BUILD_TOXAV) if(NOT OPUS_FOUND) message(${NO_TOXAV_ERROR_TYPE} "Option BUILD_TOXAV is enabled but required library OPUS was not found.") set(BUILD_TOXAV OFF) endif() if(NOT VPX_FOUND) message(${NO_TOXAV_ERROR_TYPE} "Option BUILD_TOXAV is enabled but required library VPX was not found.") set(BUILD_TOXAV OFF) endif() endif() # Disable float/double packing in CMP (C MessagePack library). # We don't transfer floats over the network, so we disable this functionality. add_definitions(-DCMP_NO_FLOAT=1) ################################################################################ # # :: Tox Core Library # ################################################################################ # toxcore_PKGCONFIG_LIBS is what's added to the Libs: line in toxcore.pc. It # needs to contain all the libraries a program using toxcore should link against # if it's statically linked. If it's dynamically linked, there is no need to # explicitly link against all the dependencies, but it doesn't harm much(*) # either. # # (*) It allows client code to use symbols from our dependencies without # explicitly linking against them. set(toxcore_PKGCONFIG_LIBS) # Requires: in pkg-config file. set(toxcore_PKGCONFIG_REQUIRES) set(toxcore_SOURCES third_party/cmp/cmp.c third_party/cmp/cmp.h toxcore/announce.c toxcore/announce.h toxcore/bin_pack.c toxcore/bin_pack.h toxcore/bin_unpack.c toxcore/bin_unpack.h toxcore/ccompat.c toxcore/ccompat.h toxcore/crypto_core.c toxcore/crypto_core.h toxcore/crypto_core_pack.c toxcore/crypto_core_pack.h toxcore/DHT.c toxcore/DHT.h toxcore/events/conference_connected.c toxcore/events/conference_invite.c toxcore/events/conference_message.c toxcore/events/conference_peer_list_changed.c toxcore/events/conference_peer_name.c toxcore/events/conference_title.c toxcore/events/dht_get_nodes_response.c toxcore/events/events_alloc.c toxcore/events/events_alloc.h toxcore/events/file_chunk_request.c toxcore/events/file_recv.c toxcore/events/file_recv_chunk.c toxcore/events/file_recv_control.c toxcore/events/friend_connection_status.c toxcore/events/friend_lossless_packet.c toxcore/events/friend_lossy_packet.c toxcore/events/friend_message.c toxcore/events/friend_name.c toxcore/events/friend_read_receipt.c toxcore/events/friend_request.c toxcore/events/friend_status.c toxcore/events/friend_status_message.c toxcore/events/friend_typing.c toxcore/events/self_connection_status.c toxcore/events/group_custom_packet.c toxcore/events/group_custom_private_packet.c toxcore/events/group_invite.c toxcore/events/group_join_fail.c toxcore/events/group_message.c toxcore/events/group_moderation.c toxcore/events/group_password.c toxcore/events/group_peer_exit.c toxcore/events/group_peer_join.c toxcore/events/group_peer_limit.c toxcore/events/group_peer_name.c toxcore/events/group_peer_status.c toxcore/events/group_privacy_state.c toxcore/events/group_private_message.c toxcore/events/group_self_join.c toxcore/events/group_topic.c toxcore/events/group_topic_lock.c toxcore/events/group_voice_state.c toxcore/forwarding.c toxcore/forwarding.h toxcore/friend_connection.c toxcore/friend_connection.h toxcore/friend_requests.c toxcore/friend_requests.h toxcore/group.c toxcore/group_chats.c toxcore/group_chats.h toxcore/group_common.h toxcore/group_connection.c toxcore/group_connection.h toxcore/group.h toxcore/group_announce.c toxcore/group_announce.h toxcore/group_moderation.c toxcore/group_moderation.h toxcore/group_onion_announce.c toxcore/group_onion_announce.h toxcore/group_pack.c toxcore/group_pack.h toxcore/LAN_discovery.c toxcore/LAN_discovery.h toxcore/list.c toxcore/list.h toxcore/logger.c toxcore/logger.h toxcore/Messenger.c toxcore/Messenger.h toxcore/mem.c toxcore/mem.h toxcore/mono_time.c toxcore/mono_time.h toxcore/net_crypto.c toxcore/net_crypto.h toxcore/network.c toxcore/network.h toxcore/onion_announce.c toxcore/onion_announce.h toxcore/onion.c toxcore/onion_client.c toxcore/onion_client.h toxcore/onion.h toxcore/ping_array.c toxcore/ping_array.h toxcore/ping.c toxcore/ping.h toxcore/shared_key_cache.c toxcore/shared_key_cache.h toxcore/state.c toxcore/state.h toxcore/TCP_client.c toxcore/TCP_client.h toxcore/TCP_common.c toxcore/TCP_common.h toxcore/TCP_connection.c toxcore/TCP_connection.h toxcore/TCP_server.c toxcore/TCP_server.h toxcore/timed_auth.c toxcore/timed_auth.h toxcore/tox_api.c toxcore/tox.c toxcore/tox_dispatch.c toxcore/tox_dispatch.h toxcore/tox_event.c toxcore/tox_event.h toxcore/tox_events.c toxcore/tox_events.h toxcore/tox.h toxcore/tox_private.c toxcore/tox_private.h toxcore/tox_pack.c toxcore/tox_pack.h toxcore/tox_unpack.c toxcore/tox_unpack.h toxcore/util.c toxcore/util.h) if(TARGET unofficial-sodium::sodium) set(toxcore_LINK_LIBRARIES ${toxcore_LINK_LIBRARIES} unofficial-sodium::sodium) else() set(toxcore_LINK_LIBRARIES ${toxcore_LINK_LIBRARIES} ${LIBSODIUM_LIBRARIES}) set(toxcore_LINK_DIRECTORIES ${toxcore_LINK_DIRECTORIES} ${LIBSODIUM_LIBRARY_DIRS}) set(toxcore_INCLUDE_DIRECTORIES ${toxcore_INCLUDE_DIRECTORIES} ${LIBSODIUM_INCLUDE_DIRS}) set(toxcore_COMPILE_OPTIONS ${toxcore_COMPILE_OPTIONS} ${LIBSODIUM_CFLAGS_OTHER}) endif() set(toxcore_PKGCONFIG_REQUIRES ${toxcore_PKGCONFIG_REQUIRES} libsodium) set(toxcore_API_HEADERS ${toxcore_SOURCE_DIR}/toxcore/tox.h^tox ${toxcore_SOURCE_DIR}/toxcore/tox_events.h^tox ${toxcore_SOURCE_DIR}/toxcore/tox_dispatch.h^tox) if(EXPERIMENTAL_API) set(toxcore_API_HEADERS ${toxcore_API_HEADERS} ${toxcore_SOURCE_DIR}/toxcore/tox_private.h^tox) endif() ################################################################################ # # :: Audio/Video Library # ################################################################################ if(BUILD_TOXAV) set(toxcore_SOURCES ${toxcore_SOURCES} toxav/audio.c toxav/audio.h toxav/bwcontroller.c toxav/bwcontroller.h toxav/groupav.c toxav/groupav.h toxav/msi.c toxav/msi.h toxav/ring_buffer.c toxav/ring_buffer.h toxav/rtp.c toxav/rtp.h toxav/toxav.c toxav/toxav.h toxav/toxav_old.c toxav/video.c toxav/video.h) set(toxcore_API_HEADERS ${toxcore_API_HEADERS} ${toxcore_SOURCE_DIR}/toxav/toxav.h^toxav) if(MSVC) set(toxcore_LINK_LIBRARIES ${toxcore_LINK_LIBRARIES} PkgConfig::OPUS PkgConfig::VPX) else() set(toxcore_LINK_LIBRARIES ${toxcore_LINK_LIBRARIES} ${OPUS_LIBRARIES} ${VPX_LIBRARIES}) set(toxcore_LINK_DIRECTORIES ${toxcore_LINK_DIRECTORIES} ${OPUS_LIBRARY_DIRS} ${VPX_LIBRARY_DIRS}) set(toxcore_INCLUDE_DIRECTORIES ${toxcore_INCLUDE_DIRECTORIES} ${OPUS_INCLUDE_DIRS} ${VPX_INCLUDE_DIRS}) set(toxcore_COMPILE_OPTIONS ${toxcore_COMPILE_OPTIONS} ${OPUS_CFLAGS_OTHER} ${VPX_CFLAGS_OTHER}) endif() set(toxcore_PKGCONFIG_REQUIRES ${toxcore_PKGCONFIG_REQUIRES} opus vpx) endif() ################################################################################ # # :: Block encryption libraries # ################################################################################ set(toxcore_SOURCES ${toxcore_SOURCES} toxencryptsave/toxencryptsave.c toxencryptsave/toxencryptsave.h) set(toxcore_API_HEADERS ${toxcore_API_HEADERS} ${toxcore_SOURCE_DIR}/toxencryptsave/toxencryptsave.h^tox) ################################################################################ # # :: System dependencies # ################################################################################ # These need to come after other dependencies, since e.g. libvpx may depend on # pthread, but doesn't list it in VPX_LIBRARIES. We're adding it here, after # any potential libvpx linking. message("CMAKE_THREAD_LIBS_INIT: ${CMAKE_THREAD_LIBS_INIT}") if(CMAKE_THREAD_LIBS_INIT) set(toxcore_LINK_LIBRARIES ${toxcore_LINK_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT}) set(toxcore_PKGCONFIG_LIBS ${toxcore_PKGCONFIG_LIBS} ${CMAKE_THREAD_LIBS_INIT}) endif() if(NSL_LIBRARIES) set(toxcore_LINK_LIBRARIES ${toxcore_LINK_LIBRARIES} ${NSL_LIBRARIES}) set(toxcore_PKGCONFIG_LIBS ${toxcore_PKGCONFIG_LIBS} -lnsl) endif() if(RT_LIBRARIES) set(toxcore_LINK_LIBRARIES ${toxcore_LINK_LIBRARIES} ${RT_LIBRARIES}) set(toxcore_PKGCONFIG_LIBS ${toxcore_PKGCONFIG_LIBS} -lrt) endif() if(SOCKET_LIBRARIES) set(toxcore_LINK_LIBRARIES ${toxcore_LINK_LIBRARIES} ${SOCKET_LIBRARIES}) set(toxcore_PKGCONFIG_LIBS ${toxcore_PKGCONFIG_LIBS} -lsocket) endif() if(TARGET PThreads4W::PThreads4W) set(toxcore_LINK_LIBRARIES ${toxcore_LINK_LIBRARIES} PThreads4W::PThreads4W) elseif(TARGET Threads::Threads) set(toxcore_LINK_LIBRARIES ${toxcore_LINK_LIBRARIES} Threads::Threads) endif() if(WIN32) set(toxcore_LINK_LIBRARIES ${toxcore_LINK_LIBRARIES} iphlpapi ws2_32) endif() ################################################################################ # # :: All layers together in one library for ease of use # ################################################################################ # Create combined library from all the sources. if(ENABLE_SHARED) add_library(toxcore_shared SHARED ${toxcore_SOURCES}) set_target_properties(toxcore_shared PROPERTIES OUTPUT_NAME toxcore) target_link_libraries(toxcore_shared PRIVATE ${toxcore_LINK_LIBRARIES}) target_link_directories(toxcore_shared PUBLIC ${toxcore_LINK_DIRECTORIES}) target_include_directories(toxcore_shared SYSTEM PRIVATE ${toxcore_INCLUDE_DIRECTORIES}) target_compile_options(toxcore_shared PRIVATE ${toxcore_COMPILE_OPTIONS}) endif() if(ENABLE_STATIC) add_library(toxcore_static STATIC ${toxcore_SOURCES}) if(NOT MSVC) set_target_properties(toxcore_static PROPERTIES OUTPUT_NAME toxcore) endif() target_link_libraries(toxcore_static PRIVATE ${toxcore_LINK_LIBRARIES}) target_link_directories(toxcore_static PUBLIC ${toxcore_LINK_DIRECTORIES}) target_include_directories(toxcore_static SYSTEM PRIVATE ${toxcore_INCLUDE_DIRECTORIES}) target_compile_options(toxcore_static PRIVATE ${toxcore_COMPILE_OPTIONS}) endif() if(BUILD_FUZZ_TESTS) add_library(toxcore_fuzz STATIC ${toxcore_SOURCES}) target_link_libraries(toxcore_fuzz PRIVATE ${toxcore_LINK_LIBRARIES}) target_link_directories(toxcore_fuzz PUBLIC ${toxcore_LINK_DIRECTORIES}) target_include_directories(toxcore_fuzz SYSTEM PRIVATE ${toxcore_INCLUDE_DIRECTORIES}) target_compile_options(toxcore_fuzz PRIVATE ${toxcore_COMPILE_OPTIONS}) target_compile_definitions(toxcore_fuzz PUBLIC "FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION") endif() # Make version script (on systems that support it) to limit symbol visibility. make_version_script(toxcore ${toxcore_API_HEADERS}) # Generate pkg-config file, install library to "${CMAKE_INSTALL_LIBDIR}" and install headers to # "${CMAKE_INSTALL_INCLUDEDIR}/tox". install_module(toxcore DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/tox) ################################################################################ # # :: Unit tests: no networking, just pure function calls. # ################################################################################ add_library(test_util STATIC toxcore/DHT_test_util.cc toxcore/DHT_test_util.hh toxcore/crypto_core_test_util.cc toxcore/crypto_core_test_util.hh toxcore/mem_test_util.cc toxcore/mem_test_util.hh toxcore/network_test_util.cc toxcore/network_test_util.hh toxcore/test_util.cc toxcore/test_util.hh) function(unit_test subdir target) add_executable(unit_${target}_test ${subdir}/${target}_test.cc) target_link_libraries(unit_${target}_test PRIVATE test_util) if(TARGET toxcore_static) target_link_libraries(unit_${target}_test PRIVATE toxcore_static) else() target_link_libraries(unit_${target}_test PRIVATE toxcore_shared) endif() target_link_libraries(unit_${target}_test PRIVATE GTest::gtest GTest::gtest_main GTest::gmock) set_target_properties(unit_${target}_test PROPERTIES COMPILE_FLAGS "${TEST_CXX_FLAGS}") add_test(NAME ${target} COMMAND ${CROSSCOMPILING_EMULATOR} unit_${target}_test) set_property(TEST ${target} PROPERTY ENVIRONMENT "LLVM_PROFILE_FILE=${target}.profraw") endfunction() # The actual unit tests follow. # if(UNITTEST AND TARGET GTest::gtest AND TARGET GTest::gmock) unit_test(toxav ring_buffer) unit_test(toxav rtp) unit_test(toxcore DHT) unit_test(toxcore bin_pack) unit_test(toxcore crypto_core) unit_test(toxcore group_announce) unit_test(toxcore group_moderation) unit_test(toxcore list) unit_test(toxcore mem) unit_test(toxcore mono_time) unit_test(toxcore ping_array) unit_test(toxcore test_util) unit_test(toxcore tox) unit_test(toxcore util) endif() add_subdirectory(testing) ################################################################################ # # :: Automated regression tests: create a tox network and run integration tests # ################################################################################ if(AUTOTEST) add_subdirectory(auto_tests) endif() ################################################################################ # # :: Bootstrap daemon # ################################################################################ if(DHT_BOOTSTRAP) add_executable(DHT_bootstrap other/DHT_bootstrap.c other/bootstrap_node_packets.c) if(TARGET toxcore_static) target_link_libraries(DHT_bootstrap PRIVATE toxcore_static) else() target_link_libraries(DHT_bootstrap PRIVATE toxcore_shared) endif() target_link_libraries(DHT_bootstrap PRIVATE misc_tools) if(TARGET unofficial-sodium::sodium) target_link_libraries(DHT_bootstrap PRIVATE unofficial-sodium::sodium) endif() if(TARGET PThreads4W::PThreads4W) target_link_libraries(DHT_bootstrap PRIVATE PThreads4W::PThreads4W) elseif(TARGET Threads::Threads) target_link_libraries(DHT_bootstrap PRIVATE Threads::Threads) endif() install(TARGETS DHT_bootstrap RUNTIME DESTINATION bin) endif() if(BOOTSTRAP_DAEMON) if(LIBCONFIG_FOUND) add_subdirectory(other/bootstrap_daemon) else() message(WARNING "Option BOOTSTRAP_DAEMON is enabled but required library LIBCONFIG was not found.") set(BOOTSTRAP_DAEMON OFF) endif() endif() if(BUILD_FUN_UTILS) add_subdirectory(other/fun) endif() if (BUILD_FUZZ_TESTS) add_subdirectory(testing/fuzzing) endif()