CMake：如何添加编译器标志到非默认编译器 [英] CMake: how to add compiler flags to non-default compiler

问题描述

默认gcc我通常运行：

<$> p $ p> cmake -DCMAKE_CXX_FLAGS = -I / some / path / path / to / project


这很好。

  cmake -DCMAKE_CXX_COMPILER = icpc -DCMAKE_C_COMPILER = icc -DCMAKE_CXX_FLAGS = -I / some / path / path / to / project 
  

当我尝试使用非默认编译器时， CMAKE_CXX_FLAGS 变量内容到编译器。

如何解决此问题？

正确答案是：

1. 您需要指定 CMAKE_CXX_FLAGS 变量的类型：

     -DCMAKE_CXX_FLAGS：STRING = -I / some / path 
     

   li>
   

2. 您需要向C和C ++编译器提供完整路径：

     cmake -DCMAKE_C_COMPILER = / opt / intel / bin / icc -DCMAKE_CXX_COMPILER = / opt / intel / bin / icpc -DCMAKE_CXX_FLAGS：STRING = -some-flag 
     pre> 

解决方案

  export CC = icc CXX = icpc cmake -DCMAKE_CXX_FLAGS = -I / some / path / path / to / project 
  

Hello I want to build a project with intel compiler.

With default gcc I usually run:

cmake -DCMAKE_CXX_FLAGS=-I/some/path  /path/to/project

And this works fine.

cmake -DCMAKE_CXX_COMPILER=icpc -DCMAKE_C_COMPILER=icc  -DCMAKE_CXX_FLAGS=-I/some/path  /path/to/project

When I try to use non-default compiler it does not path CMAKE_CXX_FLAGS variable content to compiler at all.

How to fix this?

Correct Answer is:

1. You need to specify the type of the CMAKE_CXX_FLAGS variable:

   -DCMAKE_CXX_FLAGS:STRING=-I/some/path
   

2. You need to provide full path to C and C++ compilers:

   cmake -DCMAKE_C_COMPILER=/opt/intel/bin/icc -DCMAKE_CXX_COMPILER=/opt/intel/bin/icpc -DCMAKE_CXX_FLAGS:STRING=-some-flag
   

解决方案

The good way to do what you expect is to use:

export CC=icc CXX=icpc cmake -DCMAKE_CXX_FLAGS=-I/some/path  /path/to/project

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