编译错误:"stddef.h:没有这样的文件或目录"

Question

每当我尝试编译此代码时,它总是会出现此错误:

    In file included from /usr/include/wchar.h:6:0,
             from /usr/lib/gcc/i686-pc-cygwin/4.9.2/include/c++/cwchar:44,
             from /usr/lib/gcc/i686-pc-cygwin/4.9.2/include/c++/bits/postypes.h:40,
             from /usr/lib/gcc/i686-pc-cygwin/4.9.2/include/c++/iosfwd:40,
             from /usr/lib/gcc/i686-pc-cygwin/4.9.2/include/c++/ios:38,
             from /usr/lib/gcc/i686-pc-cygwin/4.9.2/include/c++/ostream:38,
             from /usr/lib/gcc/i686-pc-cygwin/4.9.2/include/c++/iostream:39,
             from test.cpp:1:
    /usr/include/sys/reent.h:14:20: fatal error: stddef.h: No such file or directory
    #include <stddef.h>
                ^
    compilation terminated.

我试图编译的代码是:

#include <iostream>
using namespace std;

int main()
{
    cout << "Hello World! :D";
    return 0;
}

Answer 1

该错误是因为您的gcc-core软件包和gcc-g ++不是同一版本.要么降级其中一个以解决问题或更新两个库.建议更新两个库.

Answer 2

我在新安装 MinGW 时遇到此错误，它与“Prasanth Karri”当前接受的答案中提到的已安装软件包无关。就我而言，问题是由-nostdinc我的 Makefile引起的。实际上，我只在为不同的目标平台构建时需要该编译器标志（而不是使用 MinGW 时），因此我通过从 MinGW 构建中删除该标志来解决该问题。