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-rw-r--r--gnulib-m4/time_h.m483
1 files changed, 58 insertions, 25 deletions
diff --git a/gnulib-m4/time_h.m4 b/gnulib-m4/time_h.m4
index ad6f2f59..98d7b6e0 100644
--- a/gnulib-m4/time_h.m4
+++ b/gnulib-m4/time_h.m4
@@ -1,8 +1,8 @@
# Configure a more-standard replacement for <time.h>.
-# Copyright (C) 2000-2001, 2003-2007, 2009-2018 Free Software Foundation, Inc.
+# Copyright (C) 2000-2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
-# serial 11
+# serial 19
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
@@ -10,19 +10,32 @@
# Written by Paul Eggert and Jim Meyering.
-AC_DEFUN([gl_HEADER_TIME_H],
+AC_DEFUN_ONCE([gl_TIME_H],
[
- dnl Use AC_REQUIRE here, so that the default behavior below is expanded
- dnl once only, before all statements that occur in other macros.
- AC_REQUIRE([gl_HEADER_TIME_H_BODY])
-])
+ dnl Ensure to expand the default settings once only, before all statements
+ dnl that occur in other macros.
+ AC_REQUIRE([gl_TIME_H_DEFAULTS])
-AC_DEFUN([gl_HEADER_TIME_H_BODY],
-[
- AC_REQUIRE([AC_C_RESTRICT])
- AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
gl_NEXT_HEADERS([time.h])
AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC])
+
+ AC_REQUIRE([AC_C_RESTRICT])
+
+ AC_CACHE_CHECK([for TIME_UTC in <time.h>],
+ [gl_cv_time_h_has_TIME_UTC],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <time.h>
+ ]],
+ [[static int x = TIME_UTC; x++;]])],
+ [gl_cv_time_h_has_TIME_UTC=yes],
+ [gl_cv_time_h_has_TIME_UTC=no])])
+ if test $gl_cv_time_h_has_TIME_UTC = yes; then
+ TIME_H_DEFINES_TIME_UTC=1
+ else
+ TIME_H_DEFINES_TIME_UTC=0
+ fi
+ AC_SUBST([TIME_H_DEFINES_TIME_UTC])
])
dnl Check whether 'struct timespec' is declared
@@ -93,33 +106,53 @@ AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
AC_SUBST([UNISTD_H_DEFINES_STRUCT_TIMESPEC])
])
+# gl_TIME_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
AC_DEFUN([gl_TIME_MODULE_INDICATOR],
[
- dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
- AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
+ dnl Ensure to expand the default settings once only.
+ gl_TIME_H_REQUIRE_DEFAULTS
gl_MODULE_INDICATOR_SET_VARIABLE([$1])
dnl Define it also as a C macro, for the benefit of the unit tests.
gl_MODULE_INDICATOR_FOR_TESTS([$1])
])
-AC_DEFUN([gl_HEADER_TIME_H_DEFAULTS],
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_TIME_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_TIME_H_MODULE_INDICATOR_DEFAULTS], [
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CTIME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKTIME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LOCALTIME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_NANOSLEEP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRFTIME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRPTIME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TIMEGM])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TIMESPEC_GET])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TIMESPEC_GETRES])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TIME_R])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TIME_RZ])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TZSET])
+ dnl Support Microsoft deprecated alias function names by default.
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_TZSET], [1])
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_TIME_H_MODULE_INDICATOR_DEFAULTS])
+ AC_REQUIRE([gl_TIME_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_TIME_H_DEFAULTS],
[
- GNULIB_CTIME=0; AC_SUBST([GNULIB_CTIME])
- GNULIB_MKTIME=0; AC_SUBST([GNULIB_MKTIME])
- GNULIB_LOCALTIME=0; AC_SUBST([GNULIB_LOCALTIME])
- GNULIB_NANOSLEEP=0; AC_SUBST([GNULIB_NANOSLEEP])
- GNULIB_STRFTIME=0; AC_SUBST([GNULIB_STRFTIME])
- GNULIB_STRPTIME=0; AC_SUBST([GNULIB_STRPTIME])
- GNULIB_TIMEGM=0; AC_SUBST([GNULIB_TIMEGM])
- GNULIB_TIME_R=0; AC_SUBST([GNULIB_TIME_R])
- GNULIB_TIME_RZ=0; AC_SUBST([GNULIB_TIME_RZ])
- GNULIB_TZSET=0; AC_SUBST([GNULIB_TZSET])
dnl Assume proper GNU behavior unless another module says otherwise.
HAVE_DECL_LOCALTIME_R=1; AC_SUBST([HAVE_DECL_LOCALTIME_R])
HAVE_NANOSLEEP=1; AC_SUBST([HAVE_NANOSLEEP])
HAVE_STRPTIME=1; AC_SUBST([HAVE_STRPTIME])
HAVE_TIMEGM=1; AC_SUBST([HAVE_TIMEGM])
- HAVE_TZSET=1; AC_SUBST([HAVE_TZSET])
+ HAVE_TIMESPEC_GET=1; AC_SUBST([HAVE_TIMESPEC_GET])
+ HAVE_TIMESPEC_GETRES=1; AC_SUBST([HAVE_TIMESPEC_GETRES])
dnl Even GNU libc does not have timezone_t yet.
HAVE_TIMEZONE_T=0; AC_SUBST([HAVE_TIMEZONE_T])
dnl If another module says to replace or to not replace, do that.