Undefined Reference??

Undefined Reference??

[Mark Koi]

I have installed both gnu-win32 and mingw32 but both
packages give me the same error.  It must be an option
or something.  My brain is fried.

gcc -o myprg.exe myprg.c

Error:
c:\windows\temp\cc9350811.o   : undefined reference to 'SetTimer@16'
GCC.EXE: Internal compiler error: program ld got fatal signal 1


koi@ssa.crane.navy.mil


program:
-------------------------------------------------------

#include <stdio.h>
#include <windows.h>

VOID
CALLBACK handler(HWND hwnd, UINT umsg, UINT id, DWORD dwTime)
{
   fprintf(stdout,"Callback invoked dwTime=%d\n",dwTime);
}

int
main(int argc, char **argv)
{
    UINT cc;

    cc=SetTimer(NULL, 0, 500, (TIMERPROC) handler);
    if (cc == 0) {
       fprintf(stderr,"SetTimer failed\n");
       exit(-1);
    }
    fprintf(stdout,"Created timer succesfull\n");
    Sleep(10000);
    fprintf(stdout,"After sleep \n");
}
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Re: Undefined Reference??

[Mikey]

For cygwin32 use 

-mwindows (to get -luser32 -lgdi32)

for mingw32 use 

-windows

SetTimer is in user32.dll

On Thu, 28 Aug 1997 16:34:45 -0500 (EST), you wrote:

>I have installed both gnu-win32 and mingw32 but both
>packages give me the same error.  It must be an option
>or something.  My brain is fried.
>
>gcc -o myprg.exe myprg.c
>
>Error:
>c:\windows\temp\cc9350811.o   : undefined reference to 'SetTimer@16'
>GCC.EXE: Internal compiler error: program ld got fatal signal 1
>
>
>koi@ssa.crane.navy.mil
>
>
>program:
>-------------------------------------------------------
>
>#include <stdio.h>
>#include <windows.h>
>
>VOID
>CALLBACK handler(HWND hwnd, UINT umsg, UINT id, DWORD dwTime)
>{
>   fprintf(stdout,"Callback invoked dwTime=%d\n",dwTime);
>}
>
>int
>main(int argc, char **argv)
>{
>    UINT cc;
>
>    cc=SetTimer(NULL, 0, 500, (TIMERPROC) handler);
>    if (cc == 0) {
>       fprintf(stderr,"SetTimer failed\n");
>       exit(-1);
>    }
>    fprintf(stdout,"Created timer succesfull\n");
>    Sleep(10000);
>    fprintf(stdout,"After sleep \n");
>}
>-
>For help on using this list (especially unsubscribing), send a message to
>"gnu-win32-request@cygnus.com" with one line of text: "help".
>

(jeffdbREMOVETHIS@netzone.com)
delete REMOVETHIS from the above to reply
         Mikey
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Re: Undefined Reference??

[Jan-Jaap van der Heijden]

On Thu, 28 Aug 1997, Mark Koi wrote:

> I have installed both gnu-win32 and mingw32 but both
> packages give me the same error.  It must be an option
> or something.  My brain is fried.
> 
> gcc -o myprg.exe myprg.c

Make that:

  gcc -o myprg.exe myprg.c -luser32

SetTimer is impemented in libuser32.a

Greetings,
JJ

---
With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going
to land, and it could be dangerous sitting under them as they fly
overhead.  -- RFC1925.

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