fatal error: mysql.h: No such file or directory

   转自：http://tangmingjie2009.iteye.com/blog/1521088

      我是在Ubuntu系统下测试的

      此系统下，mysql安装: apt-get install mysql-server 等了有10多分钟

      然后又装了mysql-client: apt-get install mysql-client

      还不够还需要mysql的开发包: apt-get install libmysql++

     没有权限的话sudo 你懂的

      敲下代码

 #include

 #include "mysql.h"

 int main(void){
         MYSQL *conn_ptr;

         conn_ptr=mysql_init(NULL);
         if(!conn_ptr){
                 fprintf(stderr,"mysql_init failed \n");
                 return  EXIT_FAILURE;
         }

         conn_ptr  = mysql_real_connect(conn_ptr,"localhost","root","111111","mysql",0,NULL,0);

         if(conn_ptr){
                 printf("Connection success\n");
         }else{
                 printf("Connection failed\n");
         }

         mysql_close(conn_ptr);
         return EXIT_SUCCESS;
 }

 编译

gcc -o testmysql testmysql.c

 testmysql.c:4:19: fatal error: mysql.h: No such file or directory
 compilation terminated.

 

然后修改gcc -o testmysql testmysql.c  -I/usr/include/mysql/

 /tmp/ccW7qMov.o: In function `main':
 testmysql.c:(.text+0x11): undefined reference to `mysql_init'
 testmysql.c:(.text+0x8f): undefined reference to `mysql_real_connect'
 testmysql.c:(.text+0xc0): undefined reference to `mysql_close'
 collect2: ld returned 1 exit statu

 

最后修改

 gcc -o testmysql testmysql.c -I/usr/include/mysql/ -lmysqlclient -Wall -g

成功