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# gettime.m4 serial 14
dnl Copyright (C) 2002, 2004-2006, 2009-2023 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_GETTIME],
[
dnl Prerequisites of lib/gettime.c.
AC_REQUIRE([gl_CLOCK_TIME])
AC_REQUIRE([gl_TIMESPEC])
AC_REQUIRE([gl_CHECK_FUNC_TIMESPEC_GET])
if test $gl_cv_func_timespec_get = yes; then
AC_DEFINE([HAVE_TIMESPEC_GET], [1],
[Define if you have the timespec_get function.])
fi
])
dnl Tests whether the function timespec_get exists.
dnl Sets gl_cv_func_timespec_get and gl_cv_onwards_func_timespec_get.
AC_DEFUN([gl_CHECK_FUNC_TIMESPEC_GET],
[
AC_REQUIRE([AC_CANONICAL_HOST])
dnl Persuade OpenBSD <time.h> to declare timespec_get().
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
dnl We can't use AC_CHECK_FUNC here, because timespec_get() is defined as a
dnl static inline function in <time.h> on MSVC 14.
dnl But at the same time, we need to notice a missing declaration, like
dnl gl_CHECK_FUNCS_ANDROID does.
AC_CHECK_DECL([timespec_get], , , [[#include <time.h>]])
AC_CACHE_CHECK([for timespec_get], [gl_cv_onwards_func_timespec_get],
[if test $ac_cv_have_decl_timespec_get = yes; then
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <time.h>
struct timespec ts;
]],
[[return timespec_get (&ts, 0);]])
],
[gl_cv_onwards_func_timespec_get=yes],
[gl_cv_onwards_func_timespec_get=no])
else
gl_cv_onwards_func_timespec_get=no
fi
case "$host_os" in
linux*-android*)
if test $gl_cv_onwards_func_timespec_get = no; then
gl_cv_onwards_func_timespec_get='future OS version'
fi
;;
esac
])
case "$gl_cv_onwards_func_timespec_get" in
future*) gl_cv_func_timespec_get=no ;;
*) gl_cv_func_timespec_get=$gl_cv_onwards_func_timespec_get ;;
esac
])
AC_DEFUN([gl_GETTIME_RES],
[
dnl Prerequisites of lib/gettime-res.c.
AC_REQUIRE([gl_CLOCK_TIME])
AC_REQUIRE([gl_TIMESPEC])
AC_CHECK_FUNCS_ONCE([timespec_getres])
])
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