CMakeLists.txt

cmake_minimum_required(VERSION 3.16)
project(HPDE LANGUAGES CXX ASM)

option(HPDE_ENABLE_NATIVE "Enable -march=native on Release builds" ON)

add_library(hpde_core STATIC
    src/core.cpp
    src/custom_allocator.cpp
)

if(MSVC)
    find_program(HPDE_NASM nasm)
    if(HPDE_NASM)
        set(HPDE_ASM_OBJ ${CMAKE_CURRENT_BINARY_DIR}/assembly.obj)
        add_custom_command(
            OUTPUT ${HPDE_ASM_OBJ}
            COMMAND ${HPDE_NASM} -f win64 -o ${HPDE_ASM_OBJ} ${CMAKE_CURRENT_SOURCE_DIR}/src/assembly.asm
            DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/src/assembly.asm
            VERBATIM
        )
        add_custom_target(hpde_asm_obj ALL DEPENDS ${HPDE_ASM_OBJ})
        add_dependencies(hpde_core hpde_asm_obj)
        target_sources(hpde_core PRIVATE ${HPDE_ASM_OBJ})
    else()
        message(FATAL_ERROR "NASM is required on Windows; not found.")
    endif()
else()
    target_sources(hpde_core PRIVATE src/assembly.S)
endif()

target_include_directories(hpde_core PUBLIC
    ${CMAKE_CURRENT_SOURCE_DIR}/src
)
target_compile_features(hpde_core PUBLIC cxx_std_20)

if(CMAKE_CXX_COMPILER_ID MATCHES "Clang|GNU")
    target_compile_options(hpde_core PRIVATE
        $<$<CONFIG:Release>:-O3>
        $<$<AND:$<CONFIG:Release>,$<BOOL:${HPDE_ENABLE_NATIVE}>>:-march=native>
        $<$<CONFIG:Release>:-fno-exceptions>
        $<$<CONFIG:Release>:-fno-rtti>
    )
elseif(MSVC)
    target_compile_options(hpde_core PRIVATE
        $<$<CONFIG:Release>:/O2>
    )
endif()

add_executable(hpde_benchmark src/benchmark.cpp)
find_package(Threads REQUIRED)
target_link_libraries(hpde_core PRIVATE Threads::Threads)
target_link_libraries(hpde_benchmark PRIVATE hpde_core)