CMakeLists.txt

cmake_minimum_required(VERSION 3.14)

project(hyperloglog LANGUAGES CXX VERSION 1.0.0)

set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD_REQUIRED True)

get_directory_property(is_subproject PARENT_DIRECTORY)
if(NOT is_subproject)
  set(is_standalone YES)
else()
  set(is_standalone NO)
endif()

include(GNUInstallDirs)

add_library(${PROJECT_NAME} src/murmurhash.cpp)
target_include_directories(${PROJECT_NAME} PUBLIC
  $<BUILD_INTERFACE:${${PROJECT_NAME}_SOURCE_DIR}>/include/
  $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
set_target_properties(${PROJECT_NAME} PROPERTIES
  VERSION ${PROJECT_VERSION}
  SOVERSION ${PROJECT_VERSION})
if(MSVC)
  target_compile_options(${PROJECT_NAME} PRIVATE
    /W4)
else()
  target_compile_options(${PROJECT_NAME} PRIVATE
  -Werror -Wall -Wextra -Wconversion -Wsign-conversion
  -Wno-implicit-fallthrough)
endif()

if (is_standalone)
  add_executable(estimate_distribution
    EXCLUDE_FROM_ALL
    src/estimate_distribution.cpp)
  target_link_libraries(estimate_distribution PRIVATE ${PROJECT_NAME})

  add_executable(record_biases
    EXCLUDE_FROM_ALL
    src/record_biases.cpp)
  target_link_libraries(record_biases PRIVATE ${PROJECT_NAME})

  Include(FetchContent)
  FetchContent_Declare(
    Catch2
    GIT_REPOSITORY https://github.com/catchorg/Catch2.git
    GIT_TAG v3.7.1)

  FetchContent_MakeAvailable(Catch2)
  list(APPEND CMAKE_MODULE_PATH ${catch2_SOURCE_DIR}/extras)

  add_executable(${PROJECT_NAME}_tests EXCLUDE_FROM_ALL src/tests.cpp)
  target_link_libraries(${PROJECT_NAME}_tests PRIVATE
    ${PROJECT_NAME} Catch2::Catch2WithMain)
  if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
    target_compile_options(${PROJECT_NAME}_tests PRIVATE
      /W4 /permissive- /w14242 /w14254 /w14263 /w14265 /w14287 /we4289 /w14296
      /w14311 /w14545 /w14546 /w14547 /w14549 /w14555 /w14619 /w14640 /w14826
      /w14905 /w14906 /w14928)
  else()
    target_compile_options(${PROJECT_NAME}_tests PRIVATE
      -Werror -Wall -Wextra -Wconversion -Wsign-conversion -Wnull-dereference
      -Wnon-virtual-dtor -Wold-style-cast -Wcast-align -Wunused
      -Woverloaded-virtual -Wpedantic -Wimplicit-fallthrough)
    target_link_options(${PROJECT_NAME}_tests PRIVATE
      -fsanitize=address,undefined)
  endif()

  include(CTest)
  include(Catch)
  catch_discover_tests(${PROJECT_NAME}_tests)
endif()

install(
  TARGETS ${PROJECT_NAME}
  EXPORT ${PROJECT_NAME}_Targets
  ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
  LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
  RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})

include(CMakePackageConfigHelpers)

write_basic_package_version_file(
  "${PROJECT_NAME}-config-version.cmake"
  VERSION ${PROJECT_VERSION}
  COMPATIBILITY SameMajorVersion)

if(NOT INCLUDE_INSTALL_DIR)
  set(INCLUDE_INSTALL_DIR include/)
endif()

configure_package_config_file(
  "${PROJECT_SOURCE_DIR}/cmake/${PROJECT_NAME}-config.cmake.in"
  "${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake"
  INSTALL_DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/${PROJECT_NAME}/cmake
  PATH_VARS INCLUDE_INSTALL_DIR)

install(
  EXPORT ${PROJECT_NAME}_Targets
  FILE ${PROJECT_NAME}Targets.cmake
  NAMESPACE ${PROJECT_NAME}::
  DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/${PROJECT_NAME}/cmake)

install(
  FILES "${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake"
  "${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config-version.cmake"
  DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/${PROJECT_NAME}/cmake)

install(
  DIRECTORY ${PROJECT_SOURCE_DIR}/include/
  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME})