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9393315a06
Use AC_HEADER_TIME. Volker Borchert reported that OpenBSD-2.3/sparc defines `struct timespec' in <sys/time.h>
51 lines
1.2 KiB
Plaintext
51 lines
1.2 KiB
Plaintext
#serial 2
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dnl From Jim Meyering.
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dnl Check for the nanosleep function.
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dnl If not found, use the supplied replacement.
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dnl
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AC_DEFUN(jm_FUNC_NANOSLEEP,
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[
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# Solaris 2.5.1 needs -lposix4 to get the nanosleep function.
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# Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
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AC_SEARCH_LIBS(nanosleep, [rt posix4])
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AC_CACHE_CHECK([whether nanosleep works],
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jm_cv_func_nanosleep_works,
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[
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AC_HEADER_TIME
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AC_TRY_RUN([
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# if TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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# else
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# if HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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# endif
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int
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main ()
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{
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struct timespec ts_sleep, ts_remaining;
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ts_sleep.tv_sec = 0;
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ts_sleep.tv_nsec = 1;
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exit (nanosleep (&ts_sleep, &ts_remaining) == 0 ? 0 : 1);
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}
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],
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jm_cv_func_nanosleep_works=yes,
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jm_cv_func_nanosleep_works=no,
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dnl When crosscompiling, assume the worst.
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jm_cv_func_nanosleep_works=yes)
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])
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if test $jm_cv_func_nanosleep_works = no; then
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AC_SUBST(LIBOBJS)
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LIBOBJS="$LIBOBJS nanosleep.$ac_objext"
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AC_DEFINE_UNQUOTED(nanosleep, gnu_nanosleep,
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[Define to gnu_nanosleep if the replacement function should be used.])
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fi
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])
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