Re: Linking error

From:
"Giovanni Dicanio" <giovanniDOTdicanio@REMOVEMEgmail.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Mon, 1 Dec 2008 11:31:08 +0100
Message-ID:
<eBdJeA6UJHA.4352@TK2MSFTNGP02.phx.gbl>
Hi,

I downloaded GLUT Win32 port from his author's page:

http://www.xmission.com/~nate/glut.html

The actual link to source code is this:

http://www.xmission.com/~nate/glut/glut-3.7.6-src.zip

This library seems to me written using VC6 (it's a pure C library).
I tried building it with my copy of VC6 with SP6 and it built fine (no error
occurred).

Note that the function that gives you error has a different definition in
the source code I downloaded from the aforementioned link.

In fact, in file "win32_util.c" the body of the gettimeofday function is
this:

<code>

int
gettimeofday(struct timeval* tp, void* tzp)
{
  LARGE_INTEGER t;

  if(QueryPerformanceCounter(&t)) {
      /* hardware supports a performance counter */
      LARGE_INTEGER f;
      QueryPerformanceFrequency(&f);
      tp->tv_sec = t.QuadPart/f.QuadPart;
      tp->tv_usec = ((float)t.QuadPart/f.QuadPart*1000*1000) -
(tp->tv_sec*1000*1000);
  } else {
      /* hardware doesn't support a performance counter,
         so get the time in a more traditional way. */
      DWORD t;
      t = timeGetTime();
      tp->tv_sec = t / 1000;
      tp->tv_usec = t % 1000;
  }

  /* 0 indicates that the call succeeded. */
  return 0;
}

</code>

and it compiles fine, as the whole GLUT library.

Are you sure that you downloaded the Win32 port of GLUT?
(And not some Unix/Linux version ?)

Giovanni

"meenal" <meenaldgupta@gmail.com> ha scritto nel messaggio
news:ac2a898e-c058-4a91-916a-419904918267@o40g2000prn.googlegroups.com...

Hi all ,
I am using the fillowing function to build the glut.dll ..

int gettimeofday(struct timeval* tp, void* tzp)
{
 struct timeb tb;

 ftime(&tb);
 tp->tv_sec = tb.time;
 tp->tv_usec = tb.millitm * 1000;

 /* 0 indicates that the call succeeded. */
 return 0;
}

when i build the workspace i get the fillowing error

win32_util.obj : error LNK2019: unresolved external symbol
__imp___ftime64@4 referenced in function _ftime@4

1>Debug/GLUT32.DLL : fatal error LNK1120: 1 unresolved externals

Can you please help me to remove the errors.

regards,
Meenal

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