Linux 错误：没有包含搜索 stdio.h 的路径
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error: no include path in which to search for stdio.h
提问by Joey Adams
I used to be able to compile C programs, but now I can't:
我曾经能够编译 C 程序，但现在我不能：
$ cat helloworld.c
#include <stdio.h>
int main(void)
{
printf("Hello, world!\n");
return 0;
}
$ gcc helloworld.c
helloworld.c:1:19: error: no include path in which to search for stdio.h
Yes, I do have /usr/include/stdio.h. Yes, build-essentialsis installed.
是的，我有/usr/include/stdio.h。是的，build-essentials已安装。
This problem began after I modified my ~/.bashrcto run a program installed in my user directory. I know this is what's wrong because if I remove ~/.bashrc, it works.
这个问题是在我修改我的~/.bashrc以运行安装在我的用户目录中的程序之后开始的。我知道这有什么问题，因为如果我删除~/.bashrc，它就可以工作。
What environment variable would be shadowing /usr/includeas an include path?
什么环境变量会/usr/include作为包含路径隐藏？
采纳答案by Joey Adams
The problem was that I had another GCC in my PATH:
问题是我的 PATH 中有另一个 GCC：
$ which gcc
/home/joey/gcc4ti/bin/gcc
When I was trying to compile "Hello World", it was running a compiler for a 68000, not my system compiler :D
当我尝试编译“Hello World”时，它运行的是 68000 的编译器，而不是我的系统编译器：D
I had this in my ~/.bashrc:
我有这个~/.bashrc：
export PATH="/home/joey/gcc4ti/bin:$PATH"
Because paths are scanned in order, the gccin /home/joey/gcc4ti/binis seen first. I changed it to:
因为路径是按顺序扫描的，所以首先看到gccin /home/joey/gcc4ti/bin。我把它改成：
export PATH="$PATH:/home/joey/gcc4ti/bin"
