Hello frns,
I have written the code about the buzzer..
When I am compiling code which consists of outb and inb instructions,
I am getting the errors as below
buzz_sep2.c.text+0x19): undefined reference to `outb'
buzz_sep2.c.text+0x2d): undefined reference to `outb'
buzz_sep2.c.text+0x41): undefined reference to `outb'
buzz_sep2.c.text+0x4d): undefined reference to `inb'
buzz_sep2.c.text+0x60): undefined reference to `outb'
buzz_sep2.c.text+0x78): undefined reference to `inb'

How to solve these errors.?
I have added header files <sys/types.h>
<if_ddi.h>
Please tell me how to solve these errors.
Thanks in advance

Spell your words out. And your question makes little sense to us here, and lacks details.

What "code about the buzzer"??? What do you mean? What are you trying to do, on what version/distro of Linux, with what hardware?? Short answer to this question is "You wrote the code...you need to fix it".

Buzzer

did you include the <sys/io.h> and <unistd.h> ?
the manual page said following
"these systemcalls are primarily designed for internel kernel use,but can be used from user space.you compile with -O or -O2 similar.the functions are defined as inline macros,and will not substituted in without optimization enabled,causing unresolved references at link time" please "man outb" for more detailed
and your error at link error,try to adjust your options of compiler when you compiling
my testing code I compiled it with gcc test.c and no error occured. so try to check your options of compiler
#test.c
#include <stdio.h>
#include <unistd.h>
#include <sys/io.h>
int main()
{
outb(1,1);
return 0;
}