CMakeLists.txt

cmake_minimum_required(VERSION 3.28)
project(MetaFlow CXX)

# CMake 3.28 does not know cxx_std_26 as a feature,
# so we keep the project-level standard at the highest CMake-recognised version.
# The per-target compile options below pass -std=c++26 explicitly to actually enable C++26 + reflection on g++-16.
set(CMAKE_CXX_STANDARD 23)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
    set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type" FORCE)
endif()

find_package(Threads REQUIRED)

add_executable(MetaFlow-example
    example/main.cpp
)

target_include_directories(MetaFlow-example PRIVATE
    include
    example
)

target_compile_options(MetaFlow-example PRIVATE
    -freflection
    -std=c++26
)

target_link_libraries(MetaFlow-example PRIVATE Threads::Threads)

add_executable(MetaFlow-benchmark
    benchmark/main.cpp
)

target_include_directories(MetaFlow-benchmark PRIVATE
    include
    example
    benchmark
)

target_compile_options(MetaFlow-benchmark PRIVATE
    -freflection
    -std=c++26
    $<$<CONFIG:Release>:-march=native>
    $<$<CONFIG:Release>:-O3>
    $<$<CONFIG:Release>:-DNDEBUG>
)

target_link_libraries(MetaFlow-benchmark PRIVATE Threads::Threads)