nanobook/CMakeLists.txt at main · IpsitKalra/nanobook · GitHub

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cmake_minimum_required(VERSION 3.24)

if(POLICY CMP0135)
  cmake_policy(SET CMP0135 NEW)
endif()

project(nanobook
  VERSION 0.1.0
  DESCRIPTION "Nasdaq TotalView-ITCH 5.0 feed handler and limit order book engine"
  LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

option(NANOBOOK_BUILD_TESTS "Build unit tests" ON)
option(NANOBOOK_BUILD_BENCHMARKS "Build micro-benchmark targets" ON)
# Enabled by the release preset only; never set for debug or sanitizer builds.
option(NANOBOOK_NATIVE_ARCH "Tune optimized builds for the host CPU" OFF)

# Warnings apply to nanobook targets only, never to fetched dependencies.
add_library(nanobook_warnings INTERFACE)
if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
  target_compile_options(nanobook_warnings INTERFACE
    -Wall
    -Wextra
    -Wpedantic
    -Wshadow
    -Wnon-virtual-dtor
    -Wcast-align
    -Wformat=2)
endif()

# Host-CPU tuning for optimized builds. The canonical flag on Linux x86-64 is
# -march=native for both GCC and Clang. Some AArch64 toolchains accept only
# -mcpu=native, so probe and fall back rather than fail; the primary benchmark
# platform remains Linux x86-64 (docs/product_spec.md, section 1).
if(NANOBOOK_NATIVE_ARCH)
  include(CheckCXXCompilerFlag)
  check_cxx_compiler_flag("-march=native" NANOBOOK_HAS_MARCH_NATIVE)
  if(NANOBOOK_HAS_MARCH_NATIVE)
    add_compile_options(-march=native)
  else()
    check_cxx_compiler_flag("-mcpu=native" NANOBOOK_HAS_MCPU_NATIVE)
    if(NANOBOOK_HAS_MCPU_NATIVE)
      add_compile_options(-mcpu=native)
    else()
      message(WARNING "Neither -march=native nor -mcpu=native is supported; build is not host-tuned")
    endif()
  endif()
endif()

# Header-only for now; sources may be added as the engine grows.
add_library(nanobook INTERFACE)
add_library(nanobook::nanobook ALIAS nanobook)
target_include_directories(nanobook INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/include)
target_compile_features(nanobook INTERFACE cxx_std_20)

add_executable(nanobook_cli src/main.cpp)
set_target_properties(nanobook_cli PROPERTIES OUTPUT_NAME nanobook)
target_link_libraries(nanobook_cli PRIVATE nanobook::nanobook nanobook_warnings)

add_executable(itch_synth tools/itch_synth.cpp)
target_link_libraries(itch_synth PRIVATE nanobook::nanobook nanobook_warnings)

# Dependencies: GoogleTest and Google Benchmark only, via FetchContent.
# Adding anything else requires an explicit decision (docs/product_spec.md, section 11).
include(FetchContent)

if(NANOBOOK_BUILD_TESTS)
  set(INSTALL_GTEST OFF CACHE BOOL "" FORCE)
  FetchContent_Declare(googletest
    URL https://github.com/google/googletest/archive/refs/tags/v1.15.2.tar.gz
    URL_HASH SHA256=7b42b4d6ed48810c5362c265a17faebe90dc2373c885e5216439d37927f02926)
  FetchContent_MakeAvailable(googletest)
  enable_testing()
  add_subdirectory(tests)
endif()

if(NANOBOOK_BUILD_BENCHMARKS)
  set(BENCHMARK_ENABLE_TESTING OFF CACHE BOOL "" FORCE)
  set(BENCHMARK_ENABLE_GTEST_TESTS OFF CACHE BOOL "" FORCE)
  set(BENCHMARK_ENABLE_INSTALL OFF CACHE BOOL "" FORCE)
  set(BENCHMARK_ENABLE_WERROR OFF CACHE BOOL "" FORCE)
  FetchContent_Declare(benchmark
    URL https://github.com/google/benchmark/archive/refs/tags/v1.9.5.tar.gz
    URL_HASH SHA256=9631341c82bac4a288bef951f8b26b41f69021794184ece969f8473977eaa340)
  FetchContent_MakeAvailable(benchmark)
  add_subdirectory(bench)
endif()