LinuxQuestions.org - Freealut compilation error

I have tried to compile freealut 1.0.0, but these errors occurred while I was doing 'make':

Code:

gcc -DHAVE_CONFIG_H -I. -I. -I.. -I../include -D_XOPEN_SOURCE=500 -D__NO_CTYPE -Wall -ansi -pedantic  -g -O2 -MT libalut_la-alutUtil.lo -MD -MP -MF .deps/libalut_la-alutUtil.Tpo -c alutUtil.c  -fPIC -DP IC -o .libs/libalut_la-alutUtil.o

alutUtil.c: In function `alutSleep':

alutUtil.c:27: error: storage size of 't' isn't known

alutUtil.c:30: warning: implicit declaration of function `nanosleep'

alutUtil.c:27: warning: unused variable `t'

make[2]: *** [libalut_la-alutUtil.lo] Error 1

make[2]: Leaving directory `/sources/freealut-1.0.0/src'

make[1]: *** [all-recursive] Error 1

make[1]: Leaving directory `/sources/freealut-1.0.0'

make: *** [all] Error 2

Here are the lines from the file where the compiler gives these errors:

Code:

struct timespec t; // 27 line

  t.tv_sec = (time_t) seconds;

  t.tv_nsec = ((long) microSecs) * 1000;

  nanosleep (&t, NULL); // 30 line

'timespec' is a variable which is declared in time.h. This header is included in the file:

Code:

#if HAVE_NANOSLEEP && HAVE_TIME_H

#include <time.h>

#elif HAVE_USLEEP && HAVE_UNISTD_H

#include <unistd.h>

#elif HAVE_SLEEP && HAVE_WINDOWS_H

#include <windows.h>

#else

#error No way to sleep on this platform

#endif

So, I don't see where is the problem.
Any idea?

My compiler is gcc-3.4.5 and the distribution is made from scratch (LFS method)