c - OpenBSD 上的 <resolv.h> 给出不完整的类型错误

Question

我的ssl bindings for R在 linux、osx、windows 和 solaris 上编译，但在 OpenBSD 上包含 resolv.h 时会失败。这是 OpenBSD 中的错误吗？我应该(不)首先包含一些其他 header 吗？

egcc -std=gnu99 -I/usr/local/lib/R/include -DNDEBUG -I/usr/include -I/usr/local/include    -fpic  -O2 -pipe  -c ssl.c -o ssl.o
In file included from ssl.c:14:0:
/usr/include/resolv.h:137:3: error: array type has incomplete element type
   nsaddr_list[MAXNS]; /* address of name server */
   ^
/usr/include/resolv.h:147:18: error: field 'addr' has incomplete type
   struct in_addr addr;
                  ^
/usr/include/resolv.h:164:19: error: field 'ina' has incomplete type
    struct in_addr ina;
                   ^
/usr/include/resolv.h:165:20: error: field 'in6a' has incomplete type
    struct in6_addr in6a;
                    ^
/usr/local/lib/R/etc/Makeconf:134: recipe for target 'ssl.o' failed
gmake: *** [ssl.o] Error 1

Answer 1

评论中给出了正确答案:

#include <netinet/in.h>
#include <resolv.h>