'RTLD_NEXT' 未声明 [英] 'RTLD_NEXT' undeclared

问题描述

我正在尝试编译一个 C 程序，但我收到了未声明的错误RTLD_NEXT".我认为这应该在c程序包含的dlfcn.h中定义，但是当我查看dlfcn.h时没有RTLD_NEXT.

I'm trying to compile a C program but I get the error 'RTLD_NEXT' undeclared. I think this is supposed to be defined in dlfcn.h which the c program includes, but when I looked inside dlfcn.h there is no RTLD_NEXT.

我该如何解决这个问题?

How do I fix this?

推荐答案

这里的问题是 RTLD_NEXT 不是由 posix 标准.所以 GNU 人不会启用它，除非你 #define _GNU_SOURCE 或 -D_GNU_SOURCE.

The issue here is that RTLD_NEXT is not defined by the posix standard . So the GNU people don't enable it unless you #define _GNU_SOURCE or -D_GNU_SOURCE.

POSIX 的其他相关部分是 dlfcn.h 和dlsym.h.有趣的是，后面提到了RTLD_NEXT.显然，GNU 人对什么是扩展和什么不是扩展有点困惑.

Other relevant pieces of POSIX are dlfcn.h and dlsym.h. Interestingly, the later mentions RTLD_NEXT. Apparently, the GNU people are a bit confused about what is an extension and what is not.

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