CMakeLists.txt

cmake_minimum_required(VERSION 3.12)
enable_testing()
project(future_demo)

# link libraries
set(LINK_LIBRARIES
    gtest
)

# boost
find_package(Boost 1.71.0 REQUIRED COMPONENTS system thread)
message("Boost ${Boost_FOUND} version:${Boost_VERSION}.")

include_directories(${Boost_INCLUDE_DIRS})
link_directories(${Boost_LIBRARY_DIRS})

add_definitions(
        -DBOOST_THREAD_PROVIDES_FUTURE_CONTINUATION
        -DBOOST_THREAD_PROVIDES_EXECUTORS
        -DBOOST_THREAD_USES_MOVE)

#language standard
if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
    set(CMAKE_CXX_STANDARD 17)
    message("using C++17 standard...")
else()
    set(CMAKE_CXX_STANDARD 11)
    message("using C++11 standard...")
endif()

# 3rd party
OPTION(COMPILE_WITH_3RD_PARTY "Compile with 3rd party libraries." OFF)
if(COMPILE_WITH_3RD_PARTY)
    message("using 3rd party libraries...")
    add_subdirectory(3rd_party/googletest)
    add_subdirectory(3rd_party/abseil-cpp)
    list(APPEND LINK_LIBRARIES absl::flat_hash_map)
else()
    include_directories(
        /usr/local/include
    )
    link_directories(
        /usr/local/lib
    )
    list(APPEND LINK_LIBRARIES -labsl_bad_variant_access)
endif()

######## compiler options #######
if(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /MT")
    set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} /MTd")
else()
    list(APPEND LINK_LIBRARIES pthread)
    if(CMAKE_COMPILE_IS_GUNCXX)
        set(CMAKE_CXX_FLAGS "--coverage")
    elseif(CMAKE_GENERATOR STREQUAL Xcode)
        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fprofile-instr-generate -fcoverage-mapping")
    else()
        set(CMAKE_CXX_FLAGS "-fprofile-instr-generate -fcoverage-mapping")
    endif()
endif()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra")
################################

include_directories(${CMAKE_SOURCE_DIR})
add_executable(${PROJECT_NAME} tests/future_test.cc)
target_link_libraries(${PROJECT_NAME} ${LINK_LIBRARIES} ${Boost_LIBRARIES})