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Multiple definition Error :(

Started by iwoplaza May 29, 2012 at 6:38 PM 3 replies 1.9k views
Original Post
iwoplaza
iwoplaza
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]I'm in the[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]process of creating[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]a program[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]to load[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]and display[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]the TGA files[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]and[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]I have these[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]errors[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]when[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]compiling[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]:[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- Multiple[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]definition[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]of[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)][/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]tgaheader[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]'[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- First[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]defined[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]here[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- Multiple[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]definition[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]of[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]

[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]tga[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]'[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- First[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]defined[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]here[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- Multiple[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]definition[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]of[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)][/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]uTGAcompare[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]'[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- First[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]defined[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]here[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- Multiple[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]definition[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]of[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]

[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]cTGAcompare[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]'[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- First[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]defined[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]here[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- Multiple[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]definition[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

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[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)][/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]tgaheader[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]'[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- First[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]defined[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]here[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- Multiple[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]definition[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

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[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

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[background=rgb(245, 245, 245)]tga[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]'[/background][/font]
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[background=rgb(245, 245, 245)]- First[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]defined[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]here[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- Multiple[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]definition[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]of[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)][/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]uTGAcompare[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]'[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- First[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]defined[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]here[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- Multiple[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]definition[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]of[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

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[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

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[background=rgb(245, 245, 245)]- First[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]defined[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]here[/background][/font]
[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]- D:[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]\[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]Ivo[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]\[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]Programming[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]\C[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]+[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]+\[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]Projects\[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]3D[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]Anim[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

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[background=rgb(245, 245, 245)]Makefile.win[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)][[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]Build[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]Error][/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]["[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]3D][/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]Error 1[/background][/font]

[color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]It isn't[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

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[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

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[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

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[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]C[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]+[/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)] [/background][/font][color=#333333][font=arial, sans-serif]

[background=rgb(245, 245, 245)]+[/background][/font]

Laval B
Laval B
Are you including the same header file in multiple files ?

You may need to enclose the definitions in the header by a set of directives like so


#if !defined(SOME_CONSTANTE_OF_YOUR_CHOICE)
#define SOME_CONSTANTE_OF_YOUR_CHOICE
// Your definitions here ...
#endif


Event if those definitions are only found in one file, if the file is included in multiple other files (directly or indirectly), they will be difined multiple times.

I don't know Dev C++ nor the compiler you are using but #pragma once may also work.

I hope this helps.
We think in generalities, but we live in details.
  - Alfred North Whitehead
iwoplaza
iwoplaza
Thanks, that worked ;).
Miklas
Miklas

*quick version*


If you want the 'long' version you can check out Wikipedia (#include guards).

This is a pretty 'beginners' error? Perhaps you should check out some more C++ books/tutorials to prevent you from making mistakes like this again. (The more you known from the language, the more optimized and clean your code will be. I speak out of experience wink.png )
Aardvajk
Aardvajk
We also need to be sure that these are multiple definition and not multiple declaration errors. All the header guards in the world won't prevent the linker crapping out if you declare a variable in a header that is included in more than one translation unit.

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