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CMake

# Copyright 2007 - 2021, Alan Antonuk and the rabbitmq-c contributors.
# SPDX-License-Identifier: mit
cmake_minimum_required(VERSION 3.22...3.26)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
# Follow all steps below in order to calculate new ABI version when updating the library
# NOTE: THIS IS UNRELATED to the actual project version
#
# 1. If the library source code has changed at all since the last update, then increment revision
# 2. If any interfaces have been added, removed, or changed since the last update, increment current and set revision to 0.
# 3. If any interfaces have been added since the last public release, then increment age.
# 4. If any interfaces have been removed since the last public release, then set age to 0.
set(RMQ_SOVERSION_CURRENT 11)
set(RMQ_SOVERSION_REVISION 0)
set(RMQ_SOVERSION_AGE 7)
include(VersionFunctions)
get_library_version(RMQ_VERSION)
compute_soversion(${RMQ_SOVERSION_CURRENT} ${RMQ_SOVERSION_REVISION} ${RMQ_SOVERSION_AGE} RMQ_SOVERSION)
project(rabbitmq-c
VERSION ${RMQ_VERSION}
DESCRIPTION "C RabbitMQ AMQP client library"
LANGUAGES C)
set(CMAKE_C_STANDARD 99)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_C_EXTENSIONS ON)
set(CMAKE_C_VISIBILITY_PRESET hidden)
set(CMAKE_VISIBILITY_INLINES_HIDDEN ON)
set(default_build_type "Release")
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
message(STATUS "Setting build type to '${default_build_type}' as none was specified.")
set(CMAKE_BUILD_TYPE "${default_build_type}" CACHE STRING "Choose the type of build." FORCE)
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
endif()
include(CheckSymbolExists)
include(CheckLibraryExists)
include(CMakeDependentOption)
include(CMakePushCheckState)
include(GNUInstallDirs)
# Detect if we need to link against a socket library:
cmake_push_check_state()
if (WIN32)
# Always use WinSock2 on Windows
set(SOCKET_LIBRARIES ws2_32)
else ()
# Is it in the default link?
check_symbol_exists(getaddrinfo "sys/types.h;sys/socket.h;netdb.h" HAVE_GETADDRINFO)
if (NOT (HAVE_GETADDRINFO EQUAL 1))
SET(CMAKE_REQUIRED_LIBRARIES "socket")
check_symbol_exists(getaddrinfo "sys/types.h;sys/socket.h;netdb.h" HAVE_GETADDRINFO2)
if (HAVE_GETADDRINFO2 EQUAL 1)
set(SOCKET_LIBRARIES socket)
else ()
SET(CMAKE_REQUIRED_LIBRARIES "socket;nsl")
check_symbol_exists(getaddrinfo "sys/types.h;sys/socket.h;netdb.h" HAVE_GETADDRINFO3)
if (HAVE_GETADDRINFO3 EQUAL 1)
set(SOCKET_LIBRARIES socket nsl)
else ()
message(FATAL_ERROR "Cannot find name resolution library (containing symbol getaddrinfo)")
endif ()
endif ()
endif ()
set(CMAKE_REQUIRED_LIBRARIES ${SOCKET_LIBRARIES})
check_symbol_exists(socket "sys/types.h;sys/socket.h" HAVE_SOCKET)
if (NOT HAVE_SOCKET EQUAL 1)
set(CMAKE_REQUIRED_LIBRARIES socket ${SOCKET_LIBRARIES})
check_symbol_exists(socket "sys/types.h;sys/socket.h" HAVE_SOCKET2)
if (HAVE_SOCKET2 EQUAL 1)
set(SOCKET_LIBRARIES socket ${SOCKET_LIBRARIES})
else ()
set(CMAKE_REQUIRED_LIBRARIES socket nsl ${SOCKET_LIBRARIES})
check_symbol_exists(socket "sys/types.h;sys/socket.h" HAVE_SOCKET3)
if (HAVE_SOCKET3 EQUAL 1)
set(SOCKET_LIBRARIES socket nsl ${SOCKET_LIBRARIES})
else ()
message(FATAL_ERROR "Cannot find socket library (containing symbol socket)")
endif ()
endif ()
endif ()
endif ()
cmake_pop_check_state()
cmake_push_check_state()
set(CMAKE_REQUIRED_LIBRARIES ${SOCKET_LIBRARIES})
check_symbol_exists(poll poll.h HAVE_POLL)
if (NOT HAVE_POLL)
if (WIN32)
set(HAVE_SELECT 1)
else()
check_symbol_exists(select sys/select.h HAVE_SELECT)
endif()
if (NOT HAVE_SELECT)
message(FATAL_ERROR "rabbitmq-c requires poll() or select() to be available")
endif()
endif()
cmake_pop_check_state()
check_library_exists(rt clock_gettime "time.h" CLOCK_GETTIME_NEEDS_LIBRT)
check_library_exists(rt posix_spawnp "spawn.h" POSIX_SPAWNP_NEEDS_LIBRT)
if (CLOCK_GETTIME_NEEDS_LIBRT OR POSIX_SPAWNP_NEEDS_LIBRT)
set(LIBRT rt)
endif()
option(ENABLE_SSL_SUPPORT "Enable SSL support" ON)
if (ENABLE_SSL_SUPPORT)
# Manually check OpenSSL version because BoringSSL doesn't support version checking via find_package
set(RMQ_OPENSSL_MIN_VERSION 1.1.1)
find_package(OpenSSL REQUIRED)
if(OPENSSL_VERSION) # Will be empty for BoringSSL
if(OPENSSL_VERSION VERSION_LESS RMQ_OPENSSL_MIN_VERSION)
MESSAGE(FATAL_ERROR "Found OpenSSL version ${OPENSSL_VERSION} but ${RMQ_OPENSSL_MIN_VERSION} or later is required")
endif()
endif()
cmake_push_check_state()
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads REQUIRED)
cmake_pop_check_state()
cmake_push_check_state()
set(CMAKE_REQUIRED_LIBRARIES OpenSSL::SSL)
check_symbol_exists(ENGINE_new openssl/engine.h HAS_OPENSSL_ENGINE)
cmake_pop_check_state()
cmake_dependent_option(ENABLE_SSL_ENGINE_API "Enable support for deprecated OpenSSL ENGINE feature" ON "HAS_OPENSSL_ENGINE" OFF)
endif()
if(PROJECT_IS_TOP_LEVEL)
include(CTest)
endif()
option(BUILD_SHARED_LIBS "Build rabbitmq-c as a shared library" ON)
option(BUILD_STATIC_LIBS "Build rabbitmq-c as a static library" ON)
option(INSTALL_STATIC_LIBS "Install rabbitmq-c static library" ON)
option(BUILD_EXAMPLES "Build Examples" OFF)
option(BUILD_TOOLS "Build Tools (requires POPT Library)" OFF)
cmake_dependent_option(BUILD_TOOLS_DOCS "Build man pages for tools (requires xmlto)" OFF "BUILD_TOOLS" OFF)
option(BUILD_API_DOCS "Build Doxygen API docs" OFF)
option(RUN_SYSTEM_TESTS "Run system tests (i.e. tests requiring an accessible RabbitMQ server instance on localhost)" OFF)
option(BUILD_OSSFUZZ "Build OSSFUZZ" OFF)
if (NOT BUILD_SHARED_LIBS AND NOT BUILD_STATIC_LIBS)
message(FATAL_ERROR "One or both of BUILD_SHARED_LIBS or BUILD_STATIC_LIBS must be set to ON to build")
endif()
set(targets_export_name rabbitmq-targets)
add_subdirectory(librabbitmq)
if(BUILD_EXAMPLES)
if(NOT BUILD_SHARED_LIBS)
message(FATAL_ERROR "Examples require -DBUILD_SHARED_LIBS=ON")
endif()
add_subdirectory(examples)
endif()
if(BUILD_TOOLS)
find_package(POPT REQUIRED)
if(BUILD_TOOLS_DOCS)
find_package(XMLTO REQUIRED)
endif()
add_subdirectory(tools)
endif()
if(PROJECT_IS_TOP_LEVEL AND BUILD_TESTING)
if (NOT BUILD_STATIC_LIBS)
message(FATAL_ERROR
"Tests can only be built against static libraries "
"(set BUILD_STATIC_LIBS=ON)")
endif ()
add_subdirectory(tests)
endif ()
if(BUILD_OSSFUZZ)
if (NOT BUILD_STATIC_LIBS)
message(FATAL_ERROR "OSS-FUZZ can only be built against static libraries " "(set BUILD_STATIC_LIBS=ON)")
endif ()
add_subdirectory(fuzz)
endif ()
if (BUILD_API_DOCS)
find_package(Doxygen REQUIRED)
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/docs/Doxyfile.in ${CMAKE_CURRENT_BINARY_DIR}/docs/Doxyfile @ONLY)
add_custom_target(docs
COMMAND ${DOXYGEN_EXECUTABLE}
VERBATIM
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/docs
DEPENDS rabbitmq
COMMENT "Generating API documentation"
SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/docs/Doxyfile.in
)
endif ()
foreach (lib ${SOCKET_LIBRARIES})
set(libs_private "${libs_private} -l${lib}")
endforeach(lib)
set(libs_private "${libs_private} -l${LIBRT}")
if (ENABLE_SSL_SUPPORT)
set(libs_private "${libs_private} -lssl -lcrypto ${CMAKE_THREAD_LIBS_INIT}")
endif()
set(prefix ${CMAKE_INSTALL_PREFIX})
set(exec_prefix "\${prefix}")
cmake_path(APPEND libdir "\${exec_prefix}" "${CMAKE_INSTALL_LIBDIR}")
cmake_path(APPEND includedir "\${prefix}" "${CMAKE_INSTALL_INCLUDEDIR}")
configure_file(cmake/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/librabbitmq/config.h)
configure_file(librabbitmq.pc.in ${CMAKE_CURRENT_BINARY_DIR}/librabbitmq.pc @ONLY)
include(CMakePackageConfigHelpers)
set(RMQ_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/rabbitmq-c)
set(project_config "${CMAKE_CURRENT_BINARY_DIR}/rabbitmq-c-config.cmake")
set(version_config "${CMAKE_CURRENT_BINARY_DIR}/rabbitmq-c-config-version.cmake")
write_basic_package_version_file(
"${version_config}"
VERSION ${RMQ_VERSION}
COMPATIBILITY SameMajorVersion)
configure_package_config_file(
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/rabbitmq-c-config.cmake.in"
"${project_config}"
INSTALL_DESTINATION "${RMQ_CMAKE_DIR}")
if(BUILD_SHARED_LIBS)
list(APPEND INSTALL_TARGETS rabbitmq)
endif()
if(BUILD_STATIC_LIBS AND INSTALL_STATIC_LIBS)
list(APPEND INSTALL_TARGETS rabbitmq-static)
endif()
export(TARGETS ${INSTALL_TARGETS}
NAMESPACE rabbitmq::
FILE ${PROJECT_BINARY_DIR}/${targets_export_name}.cmake)
install(FILES ${project_config} ${version_config}
DESTINATION ${RMQ_CMAKE_DIR}
COMPONENT rabbitmq-c-development
)
install(EXPORT ${targets_export_name}
DESTINATION ${RMQ_CMAKE_DIR}
NAMESPACE rabbitmq::
COMPONENT rabbitmq-c-development
)
install(FILES
${CMAKE_CURRENT_BINARY_DIR}/librabbitmq.pc
DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig
)
if (BUILD_SHARED_LIBS)
message(STATUS "Building rabbitmq as a shared library - yes")
else ()
message(STATUS "Building rabbitmq as a shared library - no")
endif ()
if (BUILD_STATIC_LIBS)
message(STATUS "Building rabbitmq as a static library - yes")
else ()
message(STATUS "Building rabbitmq as a static library - no")
endif ()