leetcode-cpp/CMakeLists.txt at main · tan-wei/leetcode-cpp · GitHub

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cmake_minimum_required(VERSION 4.1 FATAL_ERROR)

project(
  leetcode-cpp
  VERSION 0.0.1
  DESCRIPTION "My Leetcode Solution in C++"
  HOMEPAGE_URL https://github.com/tan-wei/leetcode-cpp
  LANGUAGES CXX)

include(cmake/defaults.cmake)
include(FindThreads)
include(CTest)

# Ensure tests are built by default so files under src/solution/ are compiled
# unless the user explicitly disables BUILD_TESTING in the cache.
if(NOT DEFINED BUILD_TESTING)
  set(BUILD_TESTING
      ON
      CACHE BOOL "Build tests" FORCE)
endif()

# Find CURL provided by Conan or system
find_package(CURL REQUIRED)
find_package(nlohmann_json CONFIG REQUIRED)

add_library(warnings INTERFACE)
set_target_warnings(warnings)

add_library(options INTERFACE)
target_compile_features(options INTERFACE cxx_std_23)
enable_sanitizers(options)
enable_hardenings(options)
enable_coverage(options)

# Top-level executable (from CMakeLists-ref.txt)
add_executable(leetcode_cpp src/main.cpp src/fetcher.cpp)
target_include_directories(leetcode_cpp PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src)
if(MSVC)
  target_compile_definitions(leetcode_cpp PRIVATE _CRT_SECURE_NO_WARNINGS)
endif()
target_link_libraries(
  leetcode_cpp PRIVATE CURL::libcurl nlohmann_json::nlohmann_json warnings
                       options)

# Add a convenient run target so callers can invoke `cmake --build --target
# run_leetcode_cpp`
if(TARGET leetcode_cpp)
  add_custom_target(
    run_leetcode_cpp
    COMMAND ${CMAKE_COMMAND} -E echo "Running leetcode_cpp..."
    COMMAND $<TARGET_FILE:leetcode_cpp>
    DEPENDS leetcode_cpp
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
endif()

# put unit tests that run on your pc here
if(NOT CMAKE_CROSSCOMPILING AND BUILD_TESTING)
  # Tests target: compile all src/solution/*.cpp into a test executable and link
  # gtest Use CONFIGURE_DEPENDS so CMake will re-run configure when files are
  # added/removed
  enable_testing()
  file(GLOB_RECURSE SOLUTION_SRC CONFIGURE_DEPENDS
       "${CMAKE_CURRENT_SOURCE_DIR}/src/solution/*.cpp")
  if(SOLUTION_SRC)
    # Ensure GTest is available (from Conan or system)
    find_package(GTest REQUIRED)
    add_executable(leetcode_tests ${SOLUTION_SRC})
    target_include_directories(leetcode_tests
                               PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src)
    target_compile_definitions(leetcode_tests PRIVATE ENABLE_GTEST=1)
    target_link_libraries(leetcode_tests PRIVATE GTest::gtest_main
                                                 CURL::libcurl)
    # Register individual GoogleTest cases with CTest so each gtest is reported
    # as a separate test (gtest_discover_tests requires the GoogleTest CMake
    # module)
    include(GoogleTest)
    gtest_discover_tests(leetcode_tests)
  else()
    message(
      WARNING
        "No solution sources found in src/solution; skipping leetcode_tests target"
    )
  endif()

  # Optional: build and run a single solution via -DSOLUTION=<filename without
  # .cpp>
  set(SOLUTION
      ""
      CACHE STRING
            "Solution file basename in src/solution (e.g. s0001_two_sum)")
  if(SOLUTION)
    set(SOLUTION_SRC "${CMAKE_CURRENT_SOURCE_DIR}/src/solution/${SOLUTION}.cpp")
    if(EXISTS ${SOLUTION_SRC})
      add_executable(run_solution_exec
                     ${SOLUTION_SRC} ${CMAKE_CURRENT_SOURCE_DIR}/src/runner.cpp)
      target_include_directories(run_solution_exec
                                 PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/src)
      add_custom_target(
        run_solution
        COMMAND $<TARGET_FILE:run_solution_exec>
        DEPENDS run_solution_exec
        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
    else()
      message(
        WARNING
          "SOLUTION ${SOLUTION_SRC} not found; run_solution target will not be created"
      )
    endif()
  endif()
endif()