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CMakeLists.txt
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cmake_minimum_required(VERSION 3.13.5...3.18 FATAL_ERROR)
project(CAF_INC CXX)
# -- includes ------------------------------------------------------------------
include(CMakePackageConfigHelpers)
include(CheckCXXSourceCompiles)
include(FetchContent)
include(GNUInstallDirs)
include(GenerateExportHeader)
# -- override CMake defaults for internal cache entries ------------------------
set(CMAKE_EXPORT_COMPILE_COMMANDS ON
CACHE INTERNAL "Write JSON compile commands database")
# -- general options -----------------------------------------------------------
option(BUILD_SHARED_LIBS "Build shared library targets" ON)
# -- incubator options that are off by default ---------------------------------
option(CAF_INC_ENABLE_UTILITY_TARGETS
"Include targets like consistency-check" OFF)
option(CAF_INC_ENABLE_STANDALONE_BUILD
"Fetch and bulid required CAF modules" OFF)
# -- incubator options that are on by default ----------------------------------
option(CAF_INC_ENABLE_TESTING "Build unit test suites" ON)
option(CAF_INC_ENABLE_NET_MODULE "Build networking module" ON)
option(CAF_INC_ENABLE_BB_MODULE "Build building blocks module" ON)
option(CAF_INC_ENABLE_EXAMPLES "Build small programs" ON)
# -- incubator options with non-boolean values ---------------------------------
set(CAF_INC_SANITIZERS "" CACHE STRING
"Comma separated sanitizers, e.g., 'address,undefined'")
# -- macOS-specific options ----------------------------------------------------
if(APPLE)
set(CMAKE_MACOSX_RPATH ON CACHE INTERNAL "Use rpaths on macOS and iOS")
endif()
# -- get dependencies ----------------------------------------------------------
if(CAF_INC_ENABLE_STANDALONE_BUILD)
FetchContent_Declare(
actor_framework
GIT_REPOSITORY https://github.com/actor-framework/actor-framework.git
GIT_TAG 0.18.6
)
FetchContent_Populate(actor_framework)
set(CAF_ENABLE_EXAMPLES OFF CACHE BOOL "" FORCE)
set(CAF_ENABLE_IO_MODULE OFF CACHE BOOL "" FORCE)
set(CAF_ENABLE_TESTING OFF CACHE BOOL "" FORCE)
set(CAF_ENABLE_TOOLS OFF CACHE BOOL "" FORCE)
set(CAF_ENABLE_OPENSSL_MODULE OFF CACHE BOOL "" FORCE)
set(CAF_SANITIZERS "${CAF_INC_SANITIZERS}" CACHE STRING "" FORCE)
add_subdirectory(${actor_framework_SOURCE_DIR} ${actor_framework_BINARY_DIR})
else()
if(NOT TARGET CAF::core)
find_package(CAF COMPONENTS core test REQUIRED)
message(STATUS "Found CAF version ${CAF_VERSION}: ${CAF_DIR}")
endif()
endif()
# -- set the library version for shared library targets ------------------------
if(CMAKE_HOST_SYSTEM_NAME MATCHES "OpenBSD")
set(CAF_INC_LIB_VERSION "${CAF_VERSION_MAJOR}.${CAF_VERSION_MINOR}"
CACHE INTERNAL "The version string used for shared library objects")
else()
set(CAF_INC_LIB_VERSION "${CAF_VERSION}"
CACHE INTERNAL "The version string used for shared library objects")
endif()
# -- sanity checks -------------------------------------------------------------
if(MSVC AND CAF_INC_SANITIZERS)
message(FATAL_ERROR "Sanitizer builds are currently not supported on MSVC")
endif()
# -- unit testing setup --------------------------------------------------------
if(CAF_INC_ENABLE_TESTING)
enable_testing()
function(caf_incubator_add_test_suites target)
foreach(suiteName ${ARGN})
string(REPLACE "." "/" suitePath ${suiteName})
target_sources(${target} PRIVATE
"${CMAKE_CURRENT_SOURCE_DIR}/test/${suitePath}.cpp")
add_test(NAME ${suiteName}
COMMAND ${target} -r300 -n -v5 -s "^${suiteName}$")
endforeach()
endfunction()
endif()
# -- utility targets -----------------------------------------------------------
if(CAF_INC_ENABLE_UTILITY_TARGETS)
add_executable(caf-generate-enum-strings
EXCLUDE_FROM_ALL
cmake/caf-generate-enum-strings.cpp)
set_property(TARGET caf-generate-enum-strings PROPERTY CXX_STANDARD 17)
add_custom_target(consistency-check)
add_custom_target(update-enum-strings)
# adds a consistency check that verifies that `cpp_file` is still valid by
# re-generating the file and comparing it to the existing file
function(caf_incubator_add_enum_consistency_check hpp_file cpp_file)
set(input "${CMAKE_CURRENT_SOURCE_DIR}/${hpp_file}")
set(file_under_test "${CMAKE_CURRENT_SOURCE_DIR}/${cpp_file}")
set(output "${CMAKE_CURRENT_BINARY_DIR}/check/${cpp_file}")
get_filename_component(output_dir "${output}" DIRECTORY)
file(MAKE_DIRECTORY "${output_dir}")
add_custom_command(OUTPUT "${output}"
COMMAND caf-generate-enum-strings "${input}" "${output}"
DEPENDS caf-generate-enum-strings "${input}")
get_filename_component(target_name "${input}" NAME_WE)
add_custom_target("${target_name}"
COMMAND
"${CMAKE_COMMAND}"
"-Dfile_under_test=${file_under_test}"
"-Dgenerated_file=${output}"
-P "${PROJECT_SOURCE_DIR}/cmake/check-consistency.cmake"
DEPENDS "${output}")
add_dependencies(consistency-check "${target_name}")
add_custom_target("${target_name}-update"
COMMAND
caf-generate-enum-strings
"${input}"
"${file_under_test}"
DEPENDS caf-generate-enum-strings "${input}")
add_dependencies(update-enum-strings "${target_name}-update")
endfunction()
else()
function(caf_incubator_add_enum_consistency_check hpp_file cpp_file)
# nop
endfunction()
endif()
# -- utility functions ---------------------------------------------------------
function(caf_incubator_export_and_install_lib component)
add_library(CAF::${component} ALIAS libcaf_${component})
target_include_directories(libcaf_${component} INTERFACE
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
$<INSTALL_INTERFACE:include>)
install(TARGETS libcaf_${component}
EXPORT CAFIncubatorTargets
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT ${component}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT ${component}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT ${component})
install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/caf"
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
COMPONENT ${component}
FILES_MATCHING PATTERN "*.hpp")
get_target_property(lib_type libcaf_${component} TYPE)
if(NOT lib_type STREQUAL "INTERFACE_LIBRARY")
set_target_properties(libcaf_${component} PROPERTIES
EXPORT_NAME ${component}
SOVERSION ${CAF_VERSION}
VERSION ${CAF_INC_LIB_VERSION}
OUTPUT_NAME caf_${component})
string(TOUPPER "CAF_${component}_EXPORT" export_macro_name)
generate_export_header(
libcaf_${component}
EXPORT_MACRO_NAME ${export_macro_name}
EXPORT_FILE_NAME "caf/detail/${component}_export.hpp")
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/caf/detail/${component}_export.hpp"
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/caf/detail/")
endif()
endfunction()
# -- convenience function for automating our component setup -------------------
# Usage:
# caf_incubator_add_component(
# foo
# DEPENDENCIES
# INTERFACE
# ...
# PUBLIC
# ...
# PRIVATE
# ...
# HEADERS
# ...
# SOURCES
# ...
# TEST_SOURCES
# ...
# TEST_SUITES
# ...
# )
function(caf_incubator_add_component name)
set(varargs DEPENDENCIES HEADERS SOURCES TEST_SOURCES TEST_SUITES
ENUM_CONSISTENCY_CHECKS)
cmake_parse_arguments(CAF_INC_ADD_COMPONENT "" "" "${varargs}" ${ARGN})
if(NOT CAF_INC_ADD_COMPONENT_HEADERS)
message(FATAL_ERROR "Cannot add CAF component without at least one header.")
endif()
foreach(param DEPENDENCIES HEADERS)
if(NOT CAF_INC_ADD_COMPONENT_${param})
message(FATAL_ERROR "caf_add_component(): missing parameter ${param}")
endif()
endforeach()
set(pub_lib_target "libcaf_${name}")
set(obj_lib_target "libcaf_${name}_obj")
set(tst_bin_target "caf-${name}-test")
if(NOT CAF_INC_ADD_COMPONENT_SOURCES)
# header-only library
add_library(${pub_lib_target} INTERFACE)
if(CAF_INC_ENABLE_TESTING AND CAF_INC_ADD_COMPONENT_TEST_SOURCES)
set(targets ${tst_bin_target})
add_executable(${tst_bin_target}
${CAF_INC_ADD_COMPONENT_TEST_SOURCES})
target_link_libraries(${tst_bin_target} PRIVATE CAF::test
${CAF_INC_ADD_COMPONENT_DEPENDENCIES})
target_include_directories(${tst_bin_target} PRIVATE
"${CMAKE_CURRENT_SOURCE_DIR}/test")
if(CAF_INC_ADD_COMPONENT_TEST_SUITES)
caf_incubator_add_test_suites(${tst_bin_target}
${CAF_INC_ADD_COMPONENT_TEST_SUITES})
endif()
endif()
elseif(CAF_INC_ENABLE_TESTING AND CAF_INC_ADD_COMPONENT_TEST_SOURCES)
set(targets ${pub_lib_target} ${obj_lib_target} ${tst_bin_target})
add_library(${obj_lib_target} OBJECT
${CAF_INC_ADD_COMPONENT_HEADERS}
${CAF_INC_ADD_COMPONENT_SOURCES})
set_property(TARGET ${obj_lib_target} PROPERTY POSITION_INDEPENDENT_CODE ON)
target_link_libraries(${obj_lib_target}
${CAF_INC_ADD_COMPONENT_DEPENDENCIES})
add_library(${pub_lib_target}
"${PROJECT_SOURCE_DIR}/cmake/dummy.cpp"
$<TARGET_OBJECTS:${obj_lib_target}>)
add_executable(${tst_bin_target}
${CAF_INC_ADD_COMPONENT_TEST_SOURCES}
$<TARGET_OBJECTS:${obj_lib_target}>)
target_link_libraries(${tst_bin_target} PRIVATE CAF::test
${CAF_INC_ADD_COMPONENT_DEPENDENCIES})
target_include_directories(${tst_bin_target} PRIVATE
"${CMAKE_CURRENT_SOURCE_DIR}/test")
if(CAF_INC_ADD_COMPONENT_TEST_SUITES)
caf_incubator_add_test_suites(${tst_bin_target}
${CAF_INC_ADD_COMPONENT_TEST_SUITES})
endif()
else()
set(targets ${pub_lib_target})
add_library(${pub_lib_target}
${CAF_INC_ADD_COMPONENT_HEADERS}
${CAF_INC_ADD_COMPONENT_SOURCES})
set_property(TARGET ${pub_lib_target} PROPERTY POSITION_INDEPENDENT_CODE ON)
endif()
target_link_libraries(${pub_lib_target} ${CAF_INC_ADD_COMPONENT_DEPENDENCIES})
foreach(target ${targets})
set_property(TARGET ${target} PROPERTY CXX_STANDARD 17)
target_compile_definitions(${target} PRIVATE "libcaf_${name}_EXPORTS")
target_include_directories(${target} PRIVATE
"${CMAKE_CURRENT_SOURCE_DIR}"
"${CMAKE_CURRENT_BINARY_DIR}")
if(BUILD_SHARED_LIBS)
set_target_properties(${target} PROPERTIES
CXX_VISIBILITY_PRESET hidden
VISIBILITY_INLINES_HIDDEN ON)
endif()
endforeach()
caf_incubator_export_and_install_lib(${name})
if(CAF_INC_ADD_COMPONENT_ENUM_CONSISTENCY_CHECKS)
foreach(enum_name ${CAF_INC_ADD_COMPONENT_ENUM_CONSISTENCY_CHECKS})
string(REPLACE "." "/" path "${enum_name}")
caf_incubator_add_enum_consistency_check("caf/${path}.hpp"
"src/${path}_strings.cpp")
endforeach()
endif()
endfunction()
# -- provide an uinstall target ------------------------------------------------
# Process cmake_uninstall.cmake.in.
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
IMMEDIATE @ONLY)
# Add uninstall target if it does not exist yet.
if(NOT TARGET uninstall)
add_custom_target(uninstall)
endif()
add_custom_target(caf-incubator-uninstall)
add_custom_command(TARGET caf-incubator-uninstall
PRE_BUILD
COMMAND "${CMAKE_COMMAND}" -P
"${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")
add_dependencies(uninstall caf-incubator-uninstall)
# -- build all components the user asked for -----------------------------------
if(CAF_INC_ENABLE_NET_MODULE)
add_subdirectory(libcaf_net)
endif()
if(CAF_INC_ENABLE_BB_MODULE)
add_subdirectory(libcaf_bb)
endif()
if(CAF_INC_ENABLE_EXAMPLES)
add_subdirectory(examples)
endif()
# -- generate and install .cmake files -----------------------------------------
export(EXPORT CAFIncubatorTargets FILE CAFIncubatorTargets.cmake NAMESPACE CAF::)
install(EXPORT CAFIncubatorTargets
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/CAFIncubator"
NAMESPACE CAF::)
write_basic_package_version_file(
"${CMAKE_CURRENT_BINARY_DIR}/CAFIncubatorConfigVersion.cmake"
VERSION ${CAF_VERSION}
COMPATIBILITY ExactVersion)
configure_package_config_file(
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/CAFIncubatorConfig.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/CAFIncubatorConfig.cmake"
INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/CAFIncubator")
install(
FILES
"${CMAKE_CURRENT_BINARY_DIR}/CAFIncubatorConfig.cmake"
"${CMAKE_CURRENT_BINARY_DIR}/CAFIncubatorConfigVersion.cmake"
DESTINATION
"${CMAKE_INSTALL_LIBDIR}/cmake/CAFIncubator")