cmake_common.txt

function(compiler_minimum_required COMPILER_ID VERSION)
  if(CMAKE_CXX_COMPILER_ID STREQUAL "${COMPILER_ID}")
    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS ${VERSION})
      message(FATAL_ERROR "${COMPILER_ID} ${VERSION} or later is required.  You are running version ${CMAKE_CXX_COMPILER_VERSION}")
    endif()
  endif()
endfunction()

macro(check_connection)
  if(CHECK_CONNECTION)
    if(UNIX AND NOT APPLE)
      execute_process(COMMAND ping conan.io -c 2 -w 1000 RESULT_VARIABLE NO_CONNECTION OUTPUT_QUIET ERROR_QUIET)
    elseif(APPLE)
      execute_process(COMMAND ping conan.io -c 2 -W 1000 RESULT_VARIABLE NO_CONNECTION OUTPUT_QUIET ERROR_QUIET)
    endif()
  endif()
endmacro()

function(setup_conan)
  if(NOT USE_CONAN)
    return()
  endif()

  check_connection()

  list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_BINARY_DIR})
  list(APPEND CMAKE_PREFIX_PATH ${CMAKE_CURRENT_BINARY_DIR})

  set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH}" PARENT_SCOPE)
  set(CMAKE_PREFIX_PATH "${CMAKE_PREFIX_PATH}" PARENT_SCOPE)

  if(NOT EXISTS "${CMAKE_CURRENT_BINARY_DIR}/conan.cmake" AND NOT NO_CONNECTION)
    message(STATUS "Downloading conan.cmake from https://github.com/conan-io/cmake-conan")
    file(DOWNLOAD "https://github.com/conan-io/cmake-conan/raw/0.18.1/conan.cmake" "${CMAKE_CURRENT_BINARY_DIR}/conan.cmake" TLS_VERIFY ON)
  endif()

  include(conan)

  if(NOT CONAN_PACKAGES)
    if(APPLE AND EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/packages_macos.txt)
      file(READ ${CMAKE_CURRENT_SOURCE_DIR}/packages_macos.txt CONAN_PACKAGES)
    elseif(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/packages.txt)
      file(READ ${CMAKE_CURRENT_SOURCE_DIR}/packages.txt CONAN_PACKAGES)
    else()
      message(FATAL_ERROR "require CONAN_PACKAGES variable or packages.txt file")
    endif()
  endif()

  conan_cmake_configure(REQUIRES ${CONAN_PACKAGES} GENERATORS cmake_find_package)

  set(PROJECT_BUILD_TYPE ${CMAKE_BUILD_TYPE})
  set(CMAKE_BUILD_TYPE Release)
  conan_cmake_autodetect(CONAN_SETTINGS)
  set(CMAKE_BUILD_TYPE ${PROJECT_BUILD_TYPE})

  # HACK: remove c++ standard version from conan settings to use prebuilt binaries
  string(REPLACE ";compiler.cppstd=20" "" CONAN_SETTINGS "${CONAN_SETTINGS}")
  if(NOT NO_CONNECTION)
    conan_cmake_install(PATH_OR_REFERENCE . BUILD missing REMOTE conancenter SETTINGS ${CONAN_SETTINGS})
  endif()
endfunction()

macro(setup_macos_path)
  if(APPLE)
    if(CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "x86_64")
      set(BREW_ROOT "/usr/local/opt")
    elseif(CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "arm64")
      set(BREW_ROOT "/opt/homebrew/opt")
    endif()
    set(BOOST_ROOT "${BREW_ROOT}/boost" CACHE STRING "boost root directory")
    set(OPENSSL_ROOT_DIR "${BREW_ROOT}/openssl" CACHE STRING "openssl root directory")
  endif()
endmacro()