duplicate declaration

[fasecero]

Im working on a project and i need to use the functions of a dll. So i put all the declarations of the functions in the dll in a include file (.inc).
I need to use that functions in various sources (.eba) of the project, so in theory i need to include the .inc in every source. But then when i try to compile i get a "duplicate declaration" of every declared function.
In C, to avoid this, exists the commands:
            #ifndef souce_h
            #define source_h
means include the source only is not was included before.
In EB is a way to do this?
Thank you and sorry for my english

[fasecero]

ok, i play with the code to see wath's wrong...

suppose:
           myinclude.inc
      source1.eba
      source2.eba
      source3.eba
if i include "myinclude.inc" in the sources no problem and compiles ok.


But if i have:
           myinclude.inc
      source1.eba
      source1.inc
      source2.eba
      source2.inc
      source3.eba
      source3.inc

and i include "myinclude.inc" in the others inc appears "duplicate declaration".

So, in definitive, we can repeat an include in various sources, but we can't repeat an include in others includes.

[pistol350]

You can use these preprocessor commands in Ebasic :

Code Select Expand

$ifndef ....
$define ...


For more info, see the "Conditional Compiling" chapter in user guide.

By the way, if you create a project using the IDE options, I think the proper thing to do is to include the headers as part of the project only once
then the compiler and linker will do the rest of the job.