linking error

This is a discussion on linking error within the C++ Programming forums, part of the General Programming Boards category; When I run my program I get a compiler error saying undefined reference to 'Get_host' please help Code: //im_sender.c #include ...

  1. #1
    Registered User
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    Apr 2010
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    linking error

    When I run my program I get a compiler error saying undefined reference to 'Get_host'
    please help
    Code:
    //im_sender.c
    
    
    #include "cursor.h"
    
    
    main (int argc, char *argv [])
    
    {
    
    printf("%s\n",Get_host());
    return 0;
    }
    Code:
    //cursor.h
    
    #ifndef CURSOR_H
    #define CURSOR_H
    
    char *Get_host(void);
    //char *Get_room;
    //char *Get_name;
    
    #endif
    Code:
    //cursor.c
    
    #include "cursor.h"
    
    char Host_port[56];
    
    char* Get_host() {
    return Host_port;
    }

  2. #2
    spurious conceit MK27's Avatar
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    Quote Originally Posted by gar35 View Post
    When I run my program I get a compiler error saying undefined reference to 'Get_host'
    You mean, "when I compile my code I get an error".

    But the error you're getting is not in the code. How are you compiling it?
    C programming resources:
    GNU C Function and Macro Index -- glibc reference manual
    The C Book -- nice online learner guide
    Current ISO draft standard
    CCAN -- new CPAN like open source library repository
    3 (different) GNU debugger tutorials: #1 -- #2 -- #3
    cpwiki -- our wiki on sourceforge

  3. #3
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    Yea thats right. I have a makefile, should I include this header file in its makefile

  4. #4
    and the hat of wrongness Salem's Avatar
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    The makefile should have a list of all the .c files which need to be built.

    The dependencies include the .h files, but they in themselves are NOT compiled.
    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.
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