MinGW undefined reference

This is a discussion on MinGW undefined reference within the C Programming forums, part of the General Programming Boards category; Hello, i need help , i don't know what causes the error *_* i have this code : Code: #include ...

  1. #1
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    MinGW undefined reference

    Hello,

    i need help , i don't know what causes the error *_*




    i have this code :


    Code:
    #include <stdio.h>
    #include <stdlib.h>
    #include <dos.h>
    
    int main(void)
    {
      puts("Content-type: text/html\r\n\r\n");
      puts("<b>Hello World!</b>");
     outportb(0x378,0xFF);
      return 0;
    }

    i want to convert it to cgi script by using the following command :

    Code:
    gcc -Wall test.c -o test.cgi
    but i get this error :

    undefined reference to 'outportb'


    i'm using MinGW

    please , any idea about this error ?????

  2. #2
    and the hat of int overfl Salem's Avatar
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    Well you could begin with deleting the include for dos.h AND deleting the call to outportb()

    What are you thinking of doing?
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
    I support http://www.ukip.org/ as the first necessary step to a free Europe.

  3. #3
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    this is a code for setting the parallel port value into 0 volt.

    i want to make it executable in the cgi directory by convert it to .cgi extension.

    when i remove the outportb line, it works fine and i get my cgi script.

    But with the outportb line i get this error.

    i want to control the parallel port through internet that's all.

  4. #4
    and the hat of int overfl Salem's Avatar
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    Well then, you need to use the appropriate Win32 API calls then.

    A console program is NOT a DOS program.
    A tutorial on Parallel port Interfacing
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
    I support http://www.ukip.org/ as the first necessary step to a free Europe.

  5. #5
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    thx aloooooooooooooooot

    i used inpout32.dll functions and it works just fiiiiiiiiiiine

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