CMakeLists.txt

cmake_minimum_required(VERSION 3.12)


set(
    CMAKE_TOOLCHAIN_FILE
    "${CMAKE_CURRENT_LIST_DIR}/toolchain.cmake"
    CACHE
    FILEPATH
    "Default toolchain"
)


option(HUNTER_ENABLED "Enable Hunter package manager" OFF)
include("cmake/HunterGate.cmake")
HunterGate(
    URL "https://github.com/cpp-pm/hunter/archive/v0.23.244.tar.gz"
    SHA1 "2c0f491fd0b80f7b09e3d21adb97237161ef9835"
    LOCAL
)

option(USE_BUNDLED_BOOST "Use the bundled version of Boost." ${HUNTER_ENABLED})
option(USE_BUNDLED_SPDLOG "Use the bundled version of spdlog."
        ${HUNTER_ENABLED})
option(USE_BUNDLED_OLM "Use the bundled version of libolm." ${HUNTER_ENABLED})
option(USE_BUNDLED_GTEST "Use the bundled version of Google Test."
        ${HUNTER_ENABLED})
option(USE_BUNDLED_JSON "Use the bundled version of nlohmann json."
        ${HUNTER_ENABLED})
option(USE_BUNDLED_OPENSSL "Use the bundled version of OpenSSL."
        ${HUNTER_ENABLED})
option(USE_BUNDLED_SODIUM "Use the bundled version of libsodium."
        ${HUNTER_ENABLED})
option(USE_BUNDLED_ZLIB "Use the bundled version of zlib."
        ${HUNTER_ENABLED})

project(matrix_client VERSION 0.3.0 LANGUAGES CXX C)

option(ASAN "Compile with address sanitizers" OFF)
option(BUILD_LIB_TESTS "Build tests" ON)
option(BUILD_LIB_EXAMPLES "Build examples" ON)
option(COVERAGE "Calculate test coverage" OFF)
option(IWYU "Check headers with include-what-you-use" OFF)
option(BUILD_SHARED_LIBS "Specifies whether to build mtxclient as a shared library lib or not" ON)

set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH};${CMAKE_CURRENT_SOURCE_DIR}/cmake")

if(NOT MSVC)
  set(
    CMAKE_CXX_FLAGS
    "${CMAKE_CXX_FLAGS} \
        -Wall \
        -Wextra \
        -pipe \
        -pedantic \
        -fsized-deallocation \
        -fdiagnostics-color=always \
        -Wunreachable-code"
    )
endif()

if(MSVC)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /bigobj -bigobj")
endif()

if(ASAN)
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address,undefined")
endif()

if(NOT MSVC AND NOT APPLE)
  set(THREADS_PREFER_PTHREAD_FLAG ON)
  find_package(Threads REQUIRED)
endif()

include(FeatureSummary)

if(USE_BUNDLED_OPENSSL)
        hunter_add_package(OpenSSL)
endif()
find_package(OpenSSL REQUIRED)
set_package_properties(OpenSSL PROPERTIES
    DESCRIPTION "Open source SSL and TLS implementation and cryptographic library"
    URL "https://www.openssl.org/"
    TYPE REQUIRED
)

if(USE_BUNDLED_ZLIB)
        hunter_add_package(ZLIB)
endif()
find_package(ZLIB)
set_package_properties(ZLIB PROPERTIES
    DESCRIPTION "A free compression library unencumbered by patents"
    URL "https://www.zlib.net/"
    TYPE REQUIRED
)

if(USE_BUNDLED_OLM)
	include(FetchContent)
	FetchContent_Declare(
		Olm
		GIT_REPOSITORY https://gitlab.matrix.org/matrix-org/olm.git
		GIT_TAG        3.1.4
		)
	FetchContent_MakeAvailable(Olm)
else()
	find_package(Olm 3)
	set_package_properties(Olm PROPERTIES
		DESCRIPTION "An implementation of the Double Ratchet cryptographic ratchet"
		URL "https://git.matrix.org/git/olm/about/"
		TYPE REQUIRED
		)
endif()

if(USE_BUNDLED_SODIUM)
        hunter_add_package(libsodium)
	find_package(libsodium 1.0.14 REQUIRED)
else()
	find_package(sodium 1.0.14 REQUIRED)
	set_package_properties(sodium PROPERTIES
		DESCRIPTION "A modern, portable, easy to use crypto library"
		URL "https://github.com/jedisct1/libsodium"
		TYPE REQUIRED
		)
endif()

if(USE_BUNDLED_JSON)
        hunter_add_package(nlohmann_json)
endif()
find_package(nlohmann_json 3.2.0)
set_package_properties(nlohmann_json PROPERTIES
    DESCRIPTION "JSON for Modern C++, a C++11 header-only JSON class"
    URL "https://nlohmann.github.io/json/"
    TYPE REQUIRED
)

if(USE_BUNDLED_BOOST)
        hunter_add_package(Boost COMPONENTS iostreams system thread)
endif()
find_package(Boost 1.70 COMPONENTS iostreams system thread)
set_package_properties(Boost PROPERTIES
DESCRIPTION "Free peer-reviewed portable C++ source libraries"
URL "https://www.boost.org/"
TYPE REQUIRED
)

add_library(matrix_client
    lib/http/client.cpp
    lib/http/session.cpp
    lib/crypto/client.cpp
    lib/crypto/utils.cpp
    lib/utils.cpp
    lib/log.cpp
    lib/structs/common.cpp
    lib/structs/errors.cpp
    lib/structs/events.cpp
    lib/structs/requests.cpp
    lib/structs/events/aliases.cpp
    lib/structs/events/avatar.cpp
    lib/structs/events/canonical_alias.cpp
    lib/structs/events/common.cpp
    lib/structs/events/collections.cpp
    lib/structs/events/create.cpp
    lib/structs/events/encrypted.cpp
    lib/structs/events/encryption.cpp
    lib/structs/events/guest_access.cpp
    lib/structs/events/history_visibility.cpp
    lib/structs/events/join_rules.cpp
    lib/structs/events/member.cpp
    lib/structs/events/name.cpp
    lib/structs/events/pinned_events.cpp
    lib/structs/events/power_levels.cpp
    lib/structs/events/redaction.cpp
    lib/structs/events/tag.cpp
    lib/structs/events/tombstone.cpp
    lib/structs/events/topic.cpp
    lib/structs/events/messages/audio.cpp
    lib/structs/events/messages/emote.cpp
    lib/structs/events/messages/file.cpp
    lib/structs/events/messages/image.cpp
    lib/structs/events/messages/notice.cpp
    lib/structs/events/messages/text.cpp
    lib/structs/events/messages/video.cpp
    lib/structs/responses/common.cpp
    lib/structs/responses/create_room.cpp
    lib/structs/responses/crypto.cpp
    lib/structs/responses/empty.cpp
    lib/structs/responses/login.cpp
    lib/structs/responses/media.cpp
    lib/structs/responses/messages.cpp
    lib/structs/responses/notifications.cpp
    lib/structs/responses/profile.cpp
    lib/structs/responses/register.cpp
    lib/structs/responses/sync.cpp
    lib/structs/responses/version.cpp
    lib/structs/responses/well-known.cpp)
add_library(MatrixClient::MatrixClient ALIAS matrix_client)
target_include_directories(
	matrix_client
	PUBLIC
	$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
	$<INSTALL_INTERFACE:include>)
target_link_libraries(matrix_client
	PUBLIC
	Boost::iostreams
	Boost::system
	Boost::thread
	OpenSSL::Crypto
	OpenSSL::SSL
	Olm::Olm
	ZLIB::ZLIB
	nlohmann_json::nlohmann_json)

# NOTE(Nico): I can't figure out for the life of me, how to export that target
# correctly, so that it actually works downstream without including Findsodium
# in every project, so I just link the library and not the target, when not
# using the bundled dep...
if (USE_BUNDLED_SODIUM)
	target_link_libraries(matrix_client PUBLIC
		libsodium::libsodium)
else()
	target_include_directories(matrix_client PUBLIC
		${libsodium_INCLUDE_DIR})
	target_link_libraries(matrix_client PUBLIC
		${libsodium_LIBRARY_RELEASE})
endif()

if(NOT MSVC AND NOT APPLE)
  target_link_libraries(matrix_client PUBLIC Threads::Threads)
endif()

if(COVERAGE)
  include(CodeCoverage)
  add_custom_target(ctest COMMAND ${CMAKE_CTEST_COMMAND})
  target_compile_options(matrix_client PUBLIC
          -O0        # no optimization
          -g         # generate debug info
          --coverage # sets all required flags
          -fprofile-arcs -ftest-coverage # just to be sure, for clang!
          )
  target_link_options(matrix_client PUBLIC --coverage)
  setup_target_for_coverage(test_coverage ctest coverage)
endif()


if(IWYU)
  find_program(iwyu_path NAMES include-what-you-use iwyu)
  if(iwyu_path)
    set_property(TARGET matrix_client
                 PROPERTY CXX_INCLUDE_WHAT_YOU_USE ${iwyu_path})
  else()
    message(WARNING "Could not find the program include-what-you-use")
  endif()
endif()

if(BUILD_LIB_EXAMPLES)
  add_subdirectory(examples)
endif()

feature_summary(WHAT ALL INCLUDE_QUIET_PACKAGES FATAL_ON_MISSING_REQUIRED_PACKAGES)

#
# Installation & Target configuration.
#
include(GNUInstallDirs)
set(INSTALL_CONFIGDIR ${CMAKE_INSTALL_LIBDIR}/cmake/MatrixClient)

install(TARGETS matrix_client
        EXPORT matrix_client-targets
        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})

set_target_properties(matrix_client PROPERTIES EXPORT_NAME MatrixClient)

install(DIRECTORY include/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
install(EXPORT matrix_client-targets
               FILE
               MatrixClientTargets.cmake
               NAMESPACE
               MatrixClient::
               DESTINATION
               ${INSTALL_CONFIGDIR})

include(CMakePackageConfigHelpers)
write_basic_package_version_file(
  ${CMAKE_CURRENT_BINARY_DIR}/MatrixClientConfigVersion.cmake
  VERSION
  ${PROJECT_VERSION}
  COMPATIBILITY
  AnyNewerVersion)

configure_package_config_file(
  ${CMAKE_CURRENT_LIST_DIR}/cmake/MatrixClientConfig.cmake.in
  ${CMAKE_CURRENT_BINARY_DIR}/MatrixClientConfig.cmake
  INSTALL_DESTINATION
  ${INSTALL_CONFIGDIR})

install(FILES ${CMAKE_CURRENT_BINARY_DIR}/MatrixClientConfig.cmake
              ${CMAKE_CURRENT_BINARY_DIR}/MatrixClientConfigVersion.cmake
              DESTINATION
              ${INSTALL_CONFIGDIR})

export(EXPORT
       matrix_client-targets
       FILE
       ${CMAKE_CURRENT_BINARY_DIR}/MatrixClientTargets.cmake
       NAMESPACE
       MatrixClient::)
export(PACKAGE MatrixClient)

set_property(TARGET matrix_client PROPERTY SOVERSION ${PROJECT_VERSION})

if(BUILD_LIB_TESTS)
  enable_testing()

  if(USE_BUNDLED_GTEST)
	  hunter_add_package(GTest)
  endif()
  find_package(GTest REQUIRED)

  file(COPY tests/fixtures DESTINATION ${CMAKE_CURRENT_BINARY_DIR})

  add_executable(client_api tests/client_api.cpp)
  target_link_libraries(client_api
                        MatrixClient::MatrixClient
                        GTest::GTest
                        GTest::Main)
  target_include_directories(client_api PRIVATE
                             ${CMAKE_CURRENT_SOURCE_DIR}/tests)

  add_executable(media_api tests/media_api.cpp)
  target_link_libraries(media_api
                        MatrixClient::MatrixClient
                        GTest::GTest
                        GTest::Main)
  target_include_directories(media_api PRIVATE
                             ${CMAKE_CURRENT_SOURCE_DIR}/tests)

  add_executable(e2ee tests/e2ee.cpp)
  target_link_libraries(e2ee
                        MatrixClient::MatrixClient
                        GTest::GTest
                        GTest::Main)
  target_include_directories(e2ee PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/tests)

  add_executable(utils tests/utils.cpp)
  target_link_libraries(utils
                        MatrixClient::MatrixClient
                        GTest::GTest
                        GTest::Main)
  target_include_directories(utils PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/tests)

  add_executable(connection tests/connection.cpp)
  target_link_libraries(connection
                        MatrixClient::MatrixClient
                        GTest::GTest
                        GTest::Main)
  target_include_directories(connection PRIVATE
                             ${CMAKE_CURRENT_SOURCE_DIR}/tests)

  add_executable(identifiers tests/identifiers.cpp)
  target_link_libraries(identifiers
                        MatrixClient::MatrixClient
                        GTest::GTest
                        GTest::Main)

  add_executable(events tests/events.cpp)
  target_link_libraries(events
                        MatrixClient::MatrixClient
                        GTest::GTest
                        GTest::Main)

  add_executable(messages tests/messages.cpp)
  target_link_libraries(messages
                        MatrixClient::MatrixClient
                        GTest::GTest
                        GTest::Main)

  add_executable(responses tests/responses.cpp)
  target_link_libraries(responses
                        MatrixClient::MatrixClient
                        GTest::GTest
                        GTest::Main)

  add_executable(requests tests/requests.cpp)
  target_link_libraries(requests
                        MatrixClient::MatrixClient
                        GTest::GTest
                        GTest::Main)

  add_executable(errors tests/errors.cpp)
  target_link_libraries(errors
                        MatrixClient::MatrixClient
                        GTest::GTest
                        GTest::Main)

  add_executable(crypto tests/crypto.cpp)
  target_link_libraries(crypto
                        MatrixClient::MatrixClient
                        GTest::GTest
                        GTest::Main)

  add_test(BasicConnectivity connection)
  add_test(ClientAPI client_api)
  add_test(MediaAPI media_api)
  add_test(Encryption e2ee)
  add_test(Utilities utils)
  add_test(Identifiers identifiers)
  add_test(Errors errors)
  add_test(CryptoStructs crypto)
  add_test(StateEvents events)
  add_test(RoomEvents messages)
  add_test(Responses responses)
  add_test(Requests requests)
endif()