什么是 GCC 默认包含目录? [英] What are the GCC default include directories?
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问题描述
当我用 gcc 编译一个非常简单的源文件时,我不必指定标准包含文件的路径,例如 stdio 或 stdlib.
When I compile a very simple source file with gcc I don't have to specify the path to standard include files such as stdio or stdlib.
GCC 如何知道如何找到这些文件?
How does GCC know how to find these files?
它是否有硬连线的 /usr/include
路径,或者它会从其他操作系统组件获取路径?
Does it have the /usr/include
path hardwired inside, or it will get the paths from other OS components?
推荐答案
为了找出gcc
/g++
使用的默认路径,以及它们的优先级,您需要检查以下命令的输出:
In order to figure out the default paths used by gcc
/g++
, as well as their priorities, you need to examine the output of the following commands:
- 对于C:
gcc -xc -E -v -
- 对于C++:
gcc -xc++ -E -v -
感谢 Qt Creator 团队.
The credit goes to Qt Creator team.
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