1. freebsd 这个系统说实话 真的没有ubuntu 方便 ，要安装个软件， apt-get install 下就可以了，而在freebsd 下面只能在ports 下去装，但通常情况下总是没资源，坑啊
所以只能自己 下包，自己装了

1. 首先下 mysql-5.1.70.tar.gz

tar -zxvf mysql-5.1.70.tar.gz
cd mysql-5.1.70
./configure --prefix=/usr/local/mysql
make WITH_CHARSET=utf8 WITH_PROC_SCOPE_PTH=yes BUILD_OPTIMIZED=yes BUILD_STATIC=yes SKIP_DNS_CHECK=yes WITHOUT_INNODB=yes install clean

pw groupadd mysql

pw useradd mysql -g mysql

/usr/local/mysql/bin/mysql_install_db --user=mysql
cp /usr/local/mysql/share/mysql/my-large.cnf /etc/my.cnf
cd /usr/local/mysql

chown -R root .
chown -R mysql var
chown -R mysql var/mysql/.

chgrp -R mysql . # .号千万不要忘了写
/usr/local/mysql/bin/mysql_install_db --user=mysql
./mysqld_safe --user=mysql &
// 装好之后 初始密码没有 重设密码 ./mysqladmin -uroot -p password 123456 会提示 enter password: 直接按enter 键即可(这里要输的原来密码,原来的密码没有)

启动mysql root@gyl:/usr/local/mysql/bin # ./mysqld_safe --user=mysql &
关闭mysql root@gyl:/usr/local/mysql/bin # ./mysqladmin -uroot -p shutdown

进入mysql root@gyl:/usr/local/mysql/bin # ./mysql -u root -p
用navicate 去连的时候 要开启权限 root@gyl:/usr/local/mysql/bin # ./mysql -u root -p mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION; mysql> FLUSH PRIVILEGES; mysql> EXIT
写段代码测试下

#include <iostream>
#include <string.h>
#include "mysql.h" //安装的mysql的头文件所在的位置

using namespace std;

string host = "192.168.67.130";
string user = "root";
string pwd = "123456";
string dbname = "test";
string sql = "select * from user";
unsigned int port = 3306; // 

int status;

int main()
{

	MYSQL *mysql;
	mysql = mysql_init(0);
	MYSQL_RES *result;
	MYSQL_ROW row;

	if (mysql_real_connect(mysql, host.c_str(), user.c_str(), pwd.c_str(), dbname.c_str(), port, NULL, CLIENT_FOUND_ROWS) == NULL){

		cout << "connect failure!" << endl;

		return EXIT_FAILURE;

	}
	else{

		cout << "connect success!" << endl;

	}

	mysql_set_character_set(mysql, "gbk");

	status = mysql_query(mysql, sql.c_str());

	if (status != 0){

		cout << "query failure!" << endl;

	}

	cout << "the status is :" << status << endl;

	result = mysql_store_result(mysql);

	while (row = mysql_fetch_row(result)){

		cout << row[1] << "|" << row[2] << endl;

	}

	mysql_free_result(result);

	mysql_close(mysql);

}

g++ -o testmysql testmysql.cpp -lmysqlclient -I /usr/local/mysql/include/mysql -L /usr/local/mysql/lib/mysql/

编译可以成功，但是执行 ./testmysql 时 提示如下错误 Shared object "libmysqlclient.so.16" not found, required by "testmysql"

应该是 里面的代码的链接路径不对,但是又没办法改代码，只能改路径
root@gyl:/usr/local/mysql/lib/mysql # ln -s libmysqlclient.so.16 /usr/lib/libmysqlclient.so root@gyl:/usr/local/mysql/lib/mysql # cp libmysqlclient.so.16 /usr/lib
这样就可以了，大告功成，记下，免得以后又忘记了