cmake - 我应该缓存 CMAKE_BUILD_TYPE 吗？

Question

如果不设置 CMAKE_BUILD_TYPE ，然后，默认情况下，它不会被缓存。我应该缓存它吗？例如我应该:

if(NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE "Release" )
  set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Type of build (Debug, Release etc." FORCE)
endif()

要不就:

if(NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE "Release" )
endif()

还是真的无所谓？

Answer 1

CMAKE_BUILD_TYPE 的缓存对于 cmake-gui 很有用:您的项目用户将能够以一种很好的方式更改构建类型。

有一个很好的模板来设置默认的 CMAKE_BUILD_TYPE from developers :

# Set a default build type if none was specified
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
  message(STATUS "Setting build type to 'Debug' as none was specified.")
  set(CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the type of build." FORCE)
  # Set the possible values of build type for cmake-gui
  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release"
    "MinSizeRel" "RelWithDebInfo")
endif()