C 语言连接 MySQL,使用 gcc 编译时出现链接错误:Undefined symbols for architecture x86_64
操作系统是 OS X 10.9.3 ,安装了 mysql-5.6.20-osx10.8-x86_64.dmg ,默认安装在了 mysql-5.6.20-osx10.8-x86_64 ,并且自动做了软连接: /usr/local/mysql -> mysql-5.6.20-osx10.8-x86_64 ,然后我手动做了软链接: /usr/include/mysql -> /usr/local/mysql/include/ 。
gcc 版本:
$ gcc -v
Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
Target: x86_64-apple-darwin13.2.0
Thread model: posix
version.c 代码:
#include <stdio.h>
#include "mysql/mysql.h"
int main(int argc, char * argv[])
{
printf("Mysql client version:%s\n", mysql_get_client_info());
return 0;
}
编译时出现如下提示:
$ gcc version.c
Undefined symbols for architecture x86_64:
"_mysql_get_client_info", referenced from:
_main in version-923a36.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
首先请大家原谅我比较笨…… 我从网络上搜索之后,发现这种情况出现的原因很多,有程序内代码拼写错误的,也有 Xcode 添加什么文件的,但是我仅仅是使用 vi 编辑的文件,直接使用 gcc 进行编译,现在还是搞不清楚我这种问题是怎么回事。请大神帮忙解答,感激不尽。
夜之影◇菰儛
10 years, 4 months ago