| 1 | #serial 11
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| 2 |
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| 3 | # Copyright (C) 2000, 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
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| 4 | # This file is free software; the Free Software Foundation
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| 5 | # gives unlimited permission to copy and/or distribute it,
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| 6 | # with or without modifications, as long as this notice is preserved.
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| 7 |
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| 8 | dnl From Jim Meyering
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| 9 |
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| 10 | AC_DEFUN([gl_TIMESPEC],
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| 11 | [
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| 12 | AC_LIBSOURCES([timespec.h])
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| 13 |
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| 14 | dnl Prerequisites of lib/timespec.h.
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| 15 | AC_REQUIRE([AC_C_INLINE])
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| 16 | AC_REQUIRE([AC_HEADER_TIME])
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| 17 | AC_CHECK_HEADERS_ONCE(sys/time.h)
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| 18 | gl_CHECK_TYPE_STRUCT_TIMESPEC
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| 19 |
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| 20 | dnl Persuade glibc <time.h> to declare nanosleep().
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| 21 | AC_REQUIRE([AC_GNU_SOURCE])
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| 22 |
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| 23 | AC_CHECK_DECLS(nanosleep, , , [#include <time.h>])
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| 24 | ])
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| 25 |
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| 26 | dnl Define HAVE_STRUCT_TIMESPEC if `struct timespec' is declared
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| 27 | dnl in time.h or sys/time.h.
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| 28 |
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| 29 | AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
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| 30 | [
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| 31 | dnl Persuade pedantic Solaris to declare struct timespec.
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| 32 | AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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| 33 |
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| 34 | AC_REQUIRE([AC_HEADER_TIME])
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| 35 | AC_CHECK_HEADERS_ONCE(sys/time.h)
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| 36 | AC_CACHE_CHECK([for struct timespec], fu_cv_sys_struct_timespec,
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| 37 | [AC_TRY_COMPILE(
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| 38 | [
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| 39 | # if TIME_WITH_SYS_TIME
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| 40 | # include <sys/time.h>
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| 41 | # include <time.h>
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| 42 | # else
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| 43 | # if HAVE_SYS_TIME_H
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| 44 | # include <sys/time.h>
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| 45 | # else
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| 46 | # include <time.h>
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| 47 | # endif
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| 48 | # endif
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| 49 | ],
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| 50 | [static struct timespec x; x.tv_sec = x.tv_nsec;],
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| 51 | fu_cv_sys_struct_timespec=yes,
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| 52 | fu_cv_sys_struct_timespec=no)
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| 53 | ])
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| 54 |
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| 55 | if test $fu_cv_sys_struct_timespec = yes; then
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| 56 | AC_DEFINE(HAVE_STRUCT_TIMESPEC, 1,
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| 57 | [Define if struct timespec is declared in <time.h>. ])
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| 58 | fi
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| 59 | ])
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