Cmake不会将编译器标准设置为c ++ 11吗？ [英] Cmake won't set the compiler standard to c++11?

问题描述

我是cmake的新手，我正在用它构建一些c ++ 11代码（特别是一组模板别名。）我想使用 CXX_STANDARD 属性有望覆盖所有平台和问题，只需将-std = c ++ 11添加到cxxflags就可以了

I'm new to cmake, and I was building some c++11 code with it (notably a set of template aliases.) I want to use the CXX_STANDARD property to hopefully cover all platforms and problems introduced by simply adding -std=c++11 to cxxflags, which worked for me before:

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

但是当我将其更改为

set_property(GLOBAL PROPERTY CXX_STANDARD 11)
set_property(GLOBAL PROPERTY CXX_STANDARD_REQUIRED true)

cmake不会告诉编译器使用c ++ 11。后面的代码我在做什么？

cmake doesn't tell the compiler to use c++11. What am I doing wrong with the latter code?

推荐答案

CMAKE_CXX_STANDARD不是全局属性，而是变量。
http：//www.cmake .org / cmake / help / v3.1 / variable / CMAKE_CXX_STANDARD.html＃variable：CMAKE_CXX_STANDARD

CMAKE_CXX_STANDARD is not a global property, but a variable. http://www.cmake.org/cmake/help/v3.1/variable/CMAKE_CXX_STANDARD.html#variable:CMAKE_CXX_STANDARD

所以您所需要的只是

set( CMAKE_CXX_STANDARD 11 )

在定义任何目标之前。

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