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Subject: Re: incompatible implicit declaration of built-in function...
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Date: Tue, 09 May 2006 16:16:46 GMT
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Florian Xaver wrote:
> Hi!
> 
> example:
> 
> gcc -O3 -funroll-loops -Iinclude -c src/xlib/conlib.c -o obj/xlib/conlib.o
> src/xlib/conlib.c: In function 'ClearConsole':
> src/xlib/conlib.c:103: warning: incompatible implicit declaration of 
> built-in fu
> nction 'memset'

In <string.h>
      #include <string.h>
you will find a declaration
      void *memset(void *buffer, int ch, size_t num);

Note that memset returns a pointer to void.  But your code does not have 
a declaration of memset before use (am I a mindreader, or what?).  That 
means that it has an implicit declaration (before the current standard) 
with a return type of int.  [In the current standard, use without 
declaration is an error.]
Obviously, an int is not a pointer-to-void.
Fix this by #includeding <string.h>

Similar comments apply to your other errors.
[..]