Solaris 下 Sun Studio 10 中的链接错误
我写了一个这样的测试程序：
#include <sys/socket.h>
int main( void ) {
int sock = socket(AF_INET, SOCK_DGRAM, 0);
return 0;
}
并尝试编译它：
$ /tool/sunstudio/bin/cc test.c
Undefined first referenced
symbol in file
socket test.o
ld: fatal: Symbol referencing errors. No output written to a.out
输出是“符号套接字未被引用”。
请给我指示，以便我解决这个问题。
I wrote a test program like this:
#include <sys/socket.h>
int main( void ) {
int sock = socket(AF_INET, SOCK_DGRAM, 0);
return 0;
}
And tried to compile it:
$ /tool/sunstudio/bin/cc test.c
Undefined first referenced
symbol in file
socket test.o
ld: fatal: Symbol referencing errors. No output written to a.out
The output is "symbol socket is not referenced".
Kindly give me the direction so that I can resolve this.
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评论（3）
这是问题所在。
我编写了一个这样的测试程序：
并尝试对其进行编译（这是真正有帮助的输出，您必须记住，现代编译器确实尽力帮助您解决任何问题）：
现在，从输出中我们可以看到未引用符号
socket。因此，如果您输入man socket，您将从手册页中获得以下内容：-l标志表示要使用此函数，您还需要链接指定的库。在这种情况下，系统会告诉您将-lsocket -lnsl添加到cc命令行，如下所示：Here's the question.
I wrote a test program like this:
And tried to compile it so (this is the output that really helps, you have to remember that modern compilers really try their best to help you fix any problems):
Now, from the output we can see that the symbol
socketis not referenced. So if you typeman socketyou will get the following from the man page:The
-lflag indicates that to use this function you need to also link the named library. In this case you are being told to add-lsocket -lnslto thecccommand line as follows:您必须在命令行中链接到套接字库：
you have to link in the socket library, in the command line:
您需要至少添加
-lsocket到您的链接步骤，即针对 libsocket.so 的链接。不过，我不知道如何在 SunStudio UI 中执行此操作 - 它的项目是否基于 makefile？手册页通常是查找所需库的好地方；在本例中，套接字手册页 还推荐
-lnsl（请参阅概要），因此可能也需要它，但我不记得它是必要的。You need to add at least
-lsocketto your link-step, i.e. link against libsocket.so. I don't know how to do that in the SunStudio UI, though - are its projects makefile based?The man page is usually a good place to look for required libraries; in this case the man page for socket also recommends
-lnsl(see the synopsis) so that might be required too but I don't remember it being necessary.