3 # Copyright (C) 2000, 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
4 # This file is free software; the Free Software Foundation
5 # gives unlimited permission to copy and/or distribute it,
6 # with or without modifications, as long as this notice is preserved.
10 AC_DEFUN([gl_TIMESPEC],
12 AC_LIBSOURCES([timespec.h])
14 dnl Prerequisites of lib/timespec.h.
15 AC_REQUIRE([AC_C_INLINE])
16 AC_REQUIRE([AC_HEADER_TIME])
17 AC_CHECK_HEADERS_ONCE(sys/time.h)
18 gl_CHECK_TYPE_STRUCT_TIMESPEC
20 dnl Persuade glibc <time.h> to declare nanosleep().
21 AC_REQUIRE([AC_GNU_SOURCE])
23 AC_CHECK_DECLS(nanosleep, , , [#include <time.h>])
26 dnl Define HAVE_STRUCT_TIMESPEC if `struct timespec' is declared
27 dnl in time.h or sys/time.h.
29 AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
31 dnl Persuade pedantic Solaris to declare struct timespec.
32 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
34 AC_REQUIRE([AC_HEADER_TIME])
35 AC_CHECK_HEADERS_ONCE(sys/time.h)
36 AC_CACHE_CHECK([for struct timespec], fu_cv_sys_struct_timespec,
39 # if TIME_WITH_SYS_TIME
40 # include <sys/time.h>
44 # include <sys/time.h>
50 [static struct timespec x; x.tv_sec = x.tv_nsec;],
51 fu_cv_sys_struct_timespec=yes,
52 fu_cv_sys_struct_timespec=no)
55 if test $fu_cv_sys_struct_timespec = yes; then
56 AC_DEFINE(HAVE_STRUCT_TIMESPEC, 1,
57 [Define if struct timespec is declared in <time.h>. ])