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