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cmake_minimum_required(VERSION 3.10)
cmake_policy(SET CMP0048 NEW) # enable project VERSION
cmake_policy(SET CMP0056 NEW) # honor link flags in try_compile()
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
project(lager VERSION 0.1.0)
if(MSVC)
set(CMAKE_CXX_STANDARD 20)
add_compile_options(/Wall /Zc:preprocessor /bigobj)
else()
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
endif()
set(CMAKE_EXPORT_COMPILE_COMMANDS on)
set(CMAKE_CXX_EXTENSIONS off)
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Qunused-arguments")
endif()
include(GNUInstallDirs)
option(lager_BUILD_TESTS "Build tests" ON)
option(lager_BUILD_FAILURE_TESTS "Build failure tests" ON)
option(lager_BUILD_EXAMPLES "Build examples" ON)
option(lager_BUILD_DEBUGGER_EXAMPLES "Build examples that showcase the web based debugger" ON)
option(lager_BUILD_DOCS "Build docs" ON)
option(lager_EMBED_RESOURCES_PATH "Embed installation paths for easier, non-portable resource location" ON)
option(lager_DISABLE_STORE_DEPENDENCY_CHECKS "Disable compile-time checks for store dependencies" OFF)
option(lager_ENABLE_EXCEPTIONS "Always enable exceptions regardless of detected compiler support" OFF)
option(lager_DISABLE_EXCEPTIONS "Always disable exceptions regardless of detected compiler support" OFF)
if (lager_ENABLE_EXCEPTIONS AND lager_DISABLE_EXCEPTIONS)
message(FATAL_ERROR "Cannot both enable and disable exceptions")
endif()
if (NOT lager_EMBED_RESOURCES_PATH AND lager_BUILD_EXAMPLES)
message(FATAL_ERROR "Examples require embedded resources path")
endif()
if (MSVC AND NOT lager_DISABLE_STORE_DEPENDENCY_CHECKS)
message(WARNING "compile-time checks for store dependencies are currently not supported with msvc")
set(lager_DISABLE_STORE_DEPENDENCY_CHECKS ON)
endif()
if (NOT lager_BUILD_EXAMPLES AND lager_BUILD_DEBUGGER_EXAMPLES)
message(WARNING "examples using the web-based debugger are disabled when examples are disabled")
set(lager_BUILD_DEBUGGER_EXAMPLES OFF)
endif()
find_program(CCACHE ccache)
if (CCACHE)
message(STATUS "Using ccache: ${CCACHE}")
set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ${CCACHE})
set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ${CCACHE})
else()
message(STATUS "Could not find ccache")
endif()
# Targets
# =======
# the library
add_library(lager INTERFACE)
target_include_directories(lager INTERFACE
$<BUILD_INTERFACE:${lager_BINARY_DIR}/>
$<BUILD_INTERFACE:${lager_SOURCE_DIR}/>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
if(lager_DISABLE_STORE_DEPENDENCY_CHECKS)
message(STATUS "Disabling compile-time checks for store dependencies")
target_compile_definitions(lager INTERFACE LAGER_DISABLE_STORE_DEPENDENCY_CHECKS)
endif()
if(lager_ENABLE_EXCEPTIONS)
message(STATUS "Explicitly enabling exceptions")
target_compile_definitions(lager INTERFACE LAGER_USE_EXCEPTIONS)
endif()
if(lager_DISABLE_EXCEPTIONS)
message(STATUS "Explicitly disabling exceptions")
target_compile_definitions(lager INTERFACE LAGER_NO_EXCEPTIONS)
endif()
install(TARGETS lager EXPORT LagerConfig)
# requirements for tests and examples
if (lager_BUILD_TESTS OR lager_BUILD_EXAMPLES)
find_package(Boost 1.56 CONFIG)
find_package(Threads REQUIRED)
find_package(Immer REQUIRED)
find_package(Zug REQUIRED)
endif()
# the library, local development target
if(lager_BUILD_TESTS)
find_package(Catch2 REQUIRED)
add_library(lager-dev INTERFACE)
target_include_directories(lager-dev SYSTEM INTERFACE
${lager_SOURCE_DIR}
${Boost_INCLUDE_DIR}
)
target_link_libraries(lager-dev INTERFACE lager
${Boost_LIBRARIES}
${CMAKE_THREAD_LIBS_INIT}
immer
zug
)
if (ENABLE_COVERAGE)
target_compile_options(lager-dev INTERFACE "--coverage")
target_link_libraries(lager-dev INTERFACE "--coverage")
endif()
if (ENABLE_ASAN)
target_compile_options(lager-dev INTERFACE
-fno-omit-frame-pointer -fsanitize=address)
target_link_options(lager-dev INTERFACE -fsanitize=address)
endif()
enable_testing()
add_custom_target(check
COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMENT "Build and run all the tests and examples.")
add_subdirectory(test)
endif()
# the library, with http debugger
if (lager_BUILD_EXAMPLES)
add_library(lager-example INTERFACE)
target_include_directories(lager-example INTERFACE
$<BUILD_INTERFACE:${lager_BINARY_DIR}/>
$<BUILD_INTERFACE:${lager_SOURCE_DIR}/>
$<INSTALL_INTERFACE:include>
${Boost_INCLUDE_DIR}
)
target_link_libraries(lager-example INTERFACE
lager
immer
${CMAKE_THREAD_LIBS_INIT}
${Boost_LIBRARIES}
)
install(TARGETS lager-example EXPORT LagerConfig)
# examples with the http debugger
if (lager_BUILD_DEBUGGER_EXAMPLES)
add_library(lager-debugger-example INTERFACE)
target_link_libraries(lager-debugger-example INTERFACE
lager-example)
add_custom_target(gui ALL
COMMAND make
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}/resources/gui"
COMMENT "Build debugger web UI")
install(TARGETS lager-debugger-example EXPORT LagerConfig)
install(FILES
resources/gui/gui.js
resources/gui/gui.css
resources/gui/index.html
DESTINATION "${CMAKE_INSTALL_DATADIR}/lager/gui")
endif()
add_subdirectory(example)
endif()
if (lager_BUILD_DOCS)
add_subdirectory(doc)
endif()
# Also configure and install the resources_path.hpp file if wanted
if (lager_EMBED_RESOURCES_PATH)
set(LAGER_PREFIX_PATH ${CMAKE_INSTALL_PREFIX})
configure_file(lager/resources_path.hpp.in
${CMAKE_BINARY_DIR}/include/lager/resources_path.hpp)
target_include_directories(lager
INTERFACE $<BUILD_INTERFACE:${CMAKE_BINARY_DIR}/include>)
install(FILES ${CMAKE_BINARY_DIR}/include/lager/resources_path.hpp DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/lager")
endif()
install(EXPORT LagerConfig DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/Lager")
install(DIRECTORY lager DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}" PATTERN "*.hpp")
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