git: a979394afeb5 - main - Update tzcode to 2024b.
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Date: Sat, 07 Sep 2024 13:46:30 UTC
The branch main has been updated by des:
URL: https://cgit.FreeBSD.org/src/commit/?id=a979394afeb5c20fc58c5f5b005d51eb8f92f666
commit a979394afeb5c20fc58c5f5b005d51eb8f92f666
Merge: 9f0f4e23a584 e66ca70de4da
Author: Dag-Erling Smørgrav <des@FreeBSD.org>
AuthorDate: 2024-09-07 13:46:13 +0000
Commit: Dag-Erling Smørgrav <des@FreeBSD.org>
CommitDate: 2024-09-07 13:46:13 +0000
Update tzcode to 2024b.
MFC after: 3 weeks
Sponsored by: Klara, Inc.
Reviewed by: philip
Differential Revision: https://reviews.freebsd.org/D46565
contrib/tzcode/CONTRIBUTING | 18 +-
contrib/tzcode/Makefile | 412 +++++++++++++++++++++++--------------------
contrib/tzcode/NEWS | 124 ++++++++++++-
contrib/tzcode/asctime.c | 19 +-
contrib/tzcode/localtime.c | 87 ++-------
contrib/tzcode/newctime.3 | 102 ++++++-----
contrib/tzcode/newstrftime.3 | 30 ++--
contrib/tzcode/newtzset.3 | 66 +++++--
contrib/tzcode/private.h | 114 +++++++-----
contrib/tzcode/theory.html | 214 ++++++++++++++--------
contrib/tzcode/tz-art.html | 5 +
contrib/tzcode/tz-link.html | 113 +++++++-----
contrib/tzcode/tzfile.5 | 38 ++--
contrib/tzcode/tzfile.h | 8 +-
contrib/tzcode/tzselect.ksh | 125 ++++++-------
contrib/tzcode/version | 2 +-
contrib/tzcode/workman.sh | 3 +-
contrib/tzcode/zdump.c | 10 +-
contrib/tzcode/zic.8 | 52 +++---
contrib/tzcode/zic.c | 31 ++--
20 files changed, 926 insertions(+), 647 deletions(-)
diff --cc contrib/tzcode/Makefile
index d48354c72df4,000000000000..0087b4596515
mode 100644,000000..100644
--- a/contrib/tzcode/Makefile
+++ b/contrib/tzcode/Makefile
@@@ -1,1361 -1,0 +1,1381 @@@
+# Make and install tzdb code and data.
+# This file is in the public domain, so clarified as of
+# 2009-05-17 by Arthur David Olson.
+# Request POSIX conformance; this must be the first non-comment line.
+.POSIX:
- # On older platforms you may need to scrounge for a POSIX-conforming 'make'.
- # For example, on Solaris 10 (2005), use /usr/sfw/bin/gmake or
- # /usr/xpg4/bin/make, not /usr/ccs/bin/make.
++# On older platforms you may need to scrounge for POSIX conformance.
++# For example, on Solaris 10 (2005) with Sun Studio 12 aka Sun C 5.9 (2007),
++# use 'PATH=/usr/xpg4/bin:$PATH make CC=c99'.
+
+# To affect how this Makefile works, you can run a shell script like this:
+#
+# #!/bin/sh
- # make CC='gcc -std=gnu11' "$@"
++# make CC='gcc -std=gnu23' "$@"
+#
- # This example script is appropriate for a pre-2017 GNU/Linux system
- # where a non-default setting is needed to support this package's use of C99.
++# This example script is appropriate for a circa 2024 GNU/Linux system
++# where a non-default setting enables this package's optional use of C23.
+#
+# Alternatively, you can simply edit this Makefile to tailor the following
+# macro definitions.
+
+###############################################################################
+# Start of macros that one plausibly might want to tailor.
+
+# Package name for the code distribution.
+PACKAGE= tzcode
+
+# Version number for the distribution, overridden in the 'tarballs' rule below.
+VERSION= unknown
+
+# Email address for bug reports.
+BUGEMAIL= tz@iana.org
+
+# DATAFORM selects the data format.
+# Available formats represent essentially the same data, albeit
+# possibly with minor discrepancies that users are not likely to notice.
+# To get new features and the best data right away, use:
+# DATAFORM= vanguard
+# To wait a while before using new features, to give downstream users
+# time to upgrade zic (the default), use:
+# DATAFORM= main
+# To wait even longer for new features, use:
+# DATAFORM= rearguard
+# Rearguard users might also want "ZFLAGS = -b fat"; see below.
+DATAFORM= main
+
+# Change the line below for your timezone (after finding the one you want in
+# one of the $(TDATA) source files, or adding it to a source file).
+# Alternatively, if you discover you've got the wrong timezone, you can just
+# 'zic -l -' to remove it, or 'zic -l rightzone' to change it.
+# Use the command
+# make zonenames
+# to get a list of the values you can use for LOCALTIME.
+
+LOCALTIME= Factory
+
- # The POSIXRULES macro controls interpretation of POSIX-2017.1-like TZ
++# The POSIXRULES macro controls interpretation of POSIX-like TZ
+# settings like TZ='EET-2EEST' that lack DST transition rules.
+# If POSIXRULES is '-', no template is installed; this is the default.
+# Any other value for POSIXRULES is obsolete and should not be relied on, as:
+# * It does not work correctly in popular implementations such as GNU/Linux.
+# * It does not work even in tzcode, except for historical timestamps
+# that precede the last explicit transition in the POSIXRULES file.
+# Hence it typically does not work for current and future timestamps.
+# If, despite the above, you want a template for handling these settings,
+# you can change the line below (after finding the timezone you want in the
+# one of the $(TDATA) source files, or adding it to a source file).
+# Alternatively, if you discover you've got the wrong timezone, you can just
+# 'zic -p -' to remove it, or 'zic -p rightzone' to change it.
+# Use the command
+# make zonenames
+# to get a list of the values you can use for POSIXRULES.
+
+POSIXRULES= -
+
+# Also see TZDEFRULESTRING below, which takes effect only
+# if POSIXRULES is '-' or if the template file cannot be accessed.
+
+
+# Installation locations.
+#
+# The defaults are suitable for Debian, except that if REDO is
+# posix_right or right_posix then files that Debian puts under
+# /usr/share/zoneinfo/posix and /usr/share/zoneinfo/right are instead
+# put under /usr/share/zoneinfo-posix and /usr/share/zoneinfo-leaps,
+# respectively. Problems with the Debian approach are discussed in
+# the commentary for the right_posix rule (below).
+
+# Destination directory, which can be used for staging.
+# 'make DESTDIR=/stage install' installs under /stage (e.g., to
+# /stage/etc/localtime instead of to /etc/localtime). Files under
+# /stage are not intended to work as-is, but can be copied by hand to
+# the root directory later. If DESTDIR is empty, 'make install' does
+# not stage, but installs directly into production locations.
+DESTDIR =
+
+# Everything is installed into subdirectories of TOPDIR, and used there.
+# TOPDIR should be empty (meaning the root directory),
+# or a directory name that does not end in "/".
+# TOPDIR should be empty or an absolute name unless you're just testing.
+TOPDIR =
+
+# The default local timezone is taken from the file TZDEFAULT.
+TZDEFAULT = $(TOPDIR)/etc/localtime
+
+# The subdirectory containing installed program and data files, and
+# likewise for installed files that can be shared among architectures.
+# These should be relative file names.
+USRDIR = usr
+USRSHAREDIR = $(USRDIR)/share
+
+# "Compiled" timezone information is placed in the "TZDIR" directory
+# (and subdirectories).
+# TZDIR_BASENAME should not contain "/" and should not be ".", ".." or empty.
+TZDIR_BASENAME= zoneinfo
+TZDIR = $(TOPDIR)/$(USRSHAREDIR)/$(TZDIR_BASENAME)
+
+# The "tzselect" and (if you do "make INSTALL") "date" commands go in:
+BINDIR = $(TOPDIR)/$(USRDIR)/bin
+
+# The "zdump" command goes in:
+ZDUMPDIR = $(BINDIR)
+
+# The "zic" command goes in:
+ZICDIR = $(TOPDIR)/$(USRDIR)/sbin
+
+# Manual pages go in subdirectories of. . .
+MANDIR = $(TOPDIR)/$(USRSHAREDIR)/man
+
+# Library functions are put in an archive in LIBDIR.
+LIBDIR = $(TOPDIR)/$(USRDIR)/lib
+
+
+# Types to try, as an alternative to time_t.
+TIME_T_ALTERNATIVES = $(TIME_T_ALTERNATIVES_HEAD) $(TIME_T_ALTERNATIVES_TAIL)
- TIME_T_ALTERNATIVES_HEAD = int_least64_t
- TIME_T_ALTERNATIVES_TAIL = int_least32_t uint_least32_t uint_least64_t
++TIME_T_ALTERNATIVES_HEAD = int_least64_t.ck
++TIME_T_ALTERNATIVES_TAIL = int_least32_t.ck uint_least32_t.ck \
++ uint_least64_t.ck
+
+# What kind of TZif data files to generate. (TZif is the binary time
+# zone data format that zic generates; see Internet RFC 8536.)
+# If you want only POSIX time, with time values interpreted as
+# seconds since the epoch (not counting leap seconds), use
+# REDO= posix_only
+# below. If you want only "right" time, with values interpreted
+# as seconds since the epoch (counting leap seconds), use
+# REDO= right_only
+# below. If you want both sets of data available, with leap seconds not
+# counted normally, use
+# REDO= posix_right
+# below. If you want both sets of data available, with leap seconds counted
+# normally, use
+# REDO= right_posix
+# below. POSIX mandates that leap seconds not be counted; for compatibility
+# with it, use "posix_only" or "posix_right". Use POSIX time on systems with
+# leap smearing; this can work better than unsmeared "right" time with
+# applications that are not leap second aware, and is closer to unsmeared
+# "right" time than unsmeared POSIX time is (e.g., 0.5 vs 1.0 s max error).
+
+REDO= posix_right
+
+# Whether to put an "Expires" line in the leapseconds file.
+# Use EXPIRES_LINE=1 to put the line in, 0 to omit it.
+# The EXPIRES_LINE value matters only if REDO's value contains "right".
+# If you change EXPIRES_LINE, remove the leapseconds file before running "make".
+# zic's support for the Expires line was introduced in tzdb 2020a,
+# and was modified in tzdb 2021b to generate version 4 TZif files.
+# EXPIRES_LINE defaults to 0 for now so that the leapseconds file
+# can be given to pre-2020a zic implementations and so that TZif files
+# built by newer zic implementations can be read by pre-2021b libraries.
+EXPIRES_LINE= 0
+
+# To install data in text form that has all the information of the TZif data,
+# (optionally incorporating leap second information), use
+# TZDATA_TEXT= tzdata.zi leapseconds
+# To install text data without leap second information (e.g., because
+# REDO='posix_only'), use
+# TZDATA_TEXT= tzdata.zi
+# To avoid installing text data, use
+# TZDATA_TEXT=
+
+TZDATA_TEXT= leapseconds tzdata.zi
+
+# For backward-compatibility links for old zone names, use
+# BACKWARD= backward
+# To omit these links, use
+# BACKWARD=
+
+BACKWARD= backward
+
+# If you want out-of-scope and often-wrong data from the file 'backzone',
+# but only for entries listed in the backward-compatibility file zone.tab, use
+# PACKRATDATA= backzone
+# PACKRATLIST= zone.tab
+# If you want all the 'backzone' data, use
+# PACKRATDATA= backzone
+# PACKRATLIST=
+# To omit this data, use
+# PACKRATDATA=
+# PACKRATLIST=
+
+PACKRATDATA=
+PACKRATLIST=
+
+# The name of a locale using the UTF-8 encoding, used during self-tests.
+# The tests are skipped if the name does not appear to work on this system.
+
+UTF8_LOCALE= en_US.utf8
+
+# Non-default libraries needed to link.
+# On some hosts, this should have -lintl unless CFLAGS has -DHAVE_GETTEXT=0.
+LDLIBS=
+
+# Add the following to an uncommented "CFLAGS=" line as needed
+# to override defaults specified in the source code or by the system.
+# "-DFOO" is equivalent to "-DFOO=1".
+# -DDEPRECATE_TWO_DIGIT_YEARS for optional runtime warnings about strftime
+# formats that generate only the last two digits of year numbers
+# -DEPOCH_LOCAL if the 'time' function returns local time not UT
+# -DEPOCH_OFFSET=N if the 'time' function returns a value N greater
+# than what POSIX specifies, assuming local time is UT.
+# For example, N is 252460800 on AmigaOS.
+# -DHAVE_DECL_ASCTIME_R=0 if <time.h> does not declare asctime_r
++# on POSIX platforms predating POSIX.1-2024
+# -DHAVE_DECL_ENVIRON if <unistd.h> declares 'environ'
+# -DHAVE_DECL_TIMEGM=0 if <time.h> does not declare timegm
+# -DHAVE_DIRECT_H if mkdir needs <direct.h> (MS-Windows)
+# -DHAVE__GENERIC=0 if _Generic does not work*
+# -DHAVE_GETRANDOM if getrandom works (e.g., GNU/Linux),
+# -DHAVE_GETRANDOM=0 to avoid using getrandom
+# -DHAVE_GETTEXT if gettext works (e.g., GNU/Linux, FreeBSD, Solaris),
+# where LDLIBS also needs to contain -lintl on some hosts;
+# -DHAVE_GETTEXT=0 to avoid using gettext
+# -DHAVE_INCOMPATIBLE_CTIME_R if your system's time.h declares
- # ctime_r and asctime_r incompatibly with the POSIX standard
++# ctime_r and asctime_r incompatibly with POSIX.1-2017 and earlier
+# (Solaris when _POSIX_PTHREAD_SEMANTICS is not defined).
+# -DHAVE_INTTYPES_H=0 if <inttypes.h> does not work*+
+# -DHAVE_LINK=0 if your system lacks a link function
+# -DHAVE_LOCALTIME_R=0 if your system lacks a localtime_r function
+# -DHAVE_LOCALTIME_RZ=0 if you do not want zdump to use localtime_rz
+# localtime_rz can make zdump significantly faster, but is nonstandard.
+# -DHAVE_MALLOC_ERRNO=0 if malloc etc. do not set errno on failure.
+# -DHAVE_POSIX_DECLS=0 if your system's include files do not declare
+# functions like 'link' or variables like 'tzname' required by POSIX
+# -DHAVE_SETENV=0 if your system lacks the setenv function
+# -DHAVE_SNPRINTF=0 if your system lacks the snprintf function+
+# -DHAVE_STDCKDINT_H=0 if neither <stdckdint.h> nor substitutes like
+# __builtin_add_overflow work*
+# -DHAVE_STDINT_H=0 if <stdint.h> does not work*+
+# -DHAVE_STRFTIME_L if <time.h> declares locale_t and strftime_l
+# -DHAVE_STRDUP=0 if your system lacks the strdup function
+# -DHAVE_STRTOLL=0 if your system lacks the strtoll function+
+# -DHAVE_SYMLINK=0 if your system lacks the symlink function
+# -DHAVE_SYS_STAT_H=0 if <sys/stat.h> does not work*
+# -DHAVE_TZSET=0 if your system lacks a tzset function
+# -DHAVE_UNISTD_H=0 if <unistd.h> does not work*
+# -DHAVE_UTMPX_H=0 if <utmpx.h> does not work*
+# -Dlocale_t=XXX if your system uses XXX instead of locale_t
+# -DPORT_TO_C89 if tzcode should also run on mostly-C89 platforms+
+# Typically it is better to use a later standard. For example,
+# with GCC 4.9.4 (2016), prefer '-std=gnu11' to '-DPORT_TO_C89'.
+# Even with -DPORT_TO_C89, the code needs at least one C99
+# feature (integers at least 64 bits wide) and maybe more.
+# -DRESERVE_STD_EXT_IDS if your platform reserves standard identifiers
+# with external linkage, e.g., applications cannot define 'localtime'.
+# -Dssize_t=long on hosts like MS-Windows that lack ssize_t
- # -DSUPPORT_C89 if the tzcode library should support C89 callers+
- # However, this might trigger latent bugs in C99-or-later callers.
++# -DSUPPORT_C89=0 if the tzcode library should not support C89 callers
++# Although -DSUPPORT_C89=0 might work around latent bugs in callers,
++# it does not conform to POSIX.
++# -DSUPPORT_POSIX2008 if the library should support older POSIX callers+
++# However, this might cause problems in POSIX.1-2024-or-later callers.
+# -DSUPPRESS_TZDIR to not prepend TZDIR to file names; this has
+# security implications and is not recommended for general use
+# -DTHREAD_SAFE to make localtime.c thread-safe, as POSIX requires;
+# not needed by the main-program tz code, which is single-threaded.
+# Append other compiler flags as needed, e.g., -pthread on GNU/Linux.
+# -Dtime_tz=\"T\" to use T as the time_t type, rather than the system time_t
+# This is intended for internal use only; it mangles external names.
+# -DTZ_DOMAIN=\"foo\" to use "foo" for gettext domain name; default is "tz"
+# -DTZ_DOMAINDIR=\"/path\" to use "/path" for gettext directory;
+# the default is system-supplied, typically "/usr/lib/locale"
+# -DTZDEFRULESTRING=\",date/time,date/time\" to default to the specified
- # DST transitions for POSIX.1-2017-style TZ strings lacking them,
++# DST transitions for proleptic format TZ strings lacking them,
+# in the usual case where POSIXRULES is '-'. If not specified,
+# TZDEFRULESTRING defaults to US rules for future DST transitions.
+# This mishandles some past timestamps, as US DST rules have changed.
+# It also mishandles settings like TZ='EET-2EEST' for eastern Europe,
+# as Europe and US DST rules differ.
+# -DTZNAME_MAXIMUM=N to limit time zone abbreviations to N bytes (default 255)
+# -DUNINIT_TRAP if reading uninitialized storage can cause problems
+# other than simply getting garbage data
+# -DUSE_LTZ=0 to build zdump with the system time zone library
+# Also set TZDOBJS=zdump.o and CHECK_TIME_T_ALTERNATIVES= below.
+# -DZIC_BLOAT_DEFAULT=\"fat\" to default zic's -b option to "fat", and
+# similarly for "slim". Fat TZif files work around incompatibilities
+# and bugs in some TZif readers, notably older ones that
+# ignore or otherwise mishandle 64-bit data in TZif files;
+# however, fat TZif files may trigger bugs in newer TZif readers.
+# Slim TZif files are more efficient, and are the default.
+# -DZIC_MAX_ABBR_LEN_WO_WARN=3
+# (or some other number) to set the maximum time zone abbreviation length
+# that zic will accept without a warning (the default is 6)
+# -g to generate symbolic debugging info
+# -Idir to include from directory 'dir'
+# -O0 to disable optimization; other -O options to enable more optimization
+# -Uname to remove any definition of the macro 'name'
+# $(GCC_DEBUG_FLAGS) if you are using recent GCC and want lots of checking
+#
+# * Options marked "*" can be omitted if your compiler is C23 compatible.
+# * Options marked "+" are obsolescent and are planned to be removed
- # once the code assumes C99 or later, say in the year 2029.
++# once the code assumes C99 or later (say in the year 2029)
++# and POSIX.1-2024 or later (say in the year 2034).
+#
+# Select instrumentation via "make GCC_INSTRUMENT='whatever'".
+GCC_INSTRUMENT = \
+ -fsanitize=undefined -fsanitize-address-use-after-scope \
+ -fsanitize-undefined-trap-on-error -fstack-protector
+# Omit -fanalyzer from GCC_DEBUG_FLAGS, as it makes GCC too slow.
- GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \
++GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 \
+ $(GCC_INSTRUMENT) \
+ -Wall -Wextra \
+ -Walloc-size-larger-than=100000 -Warray-bounds=2 \
+ -Wbad-function-cast -Wbidi-chars=any,ucn -Wcast-align=strict -Wdate-time \
+ -Wdeclaration-after-statement -Wdouble-promotion \
- -Wduplicated-branches -Wduplicated-cond \
++ -Wduplicated-branches -Wduplicated-cond -Wflex-array-member-not-at-end \
+ -Wformat=2 -Wformat-overflow=2 -Wformat-signedness -Wformat-truncation \
+ -Wimplicit-fallthrough=5 -Winit-self -Wlogical-op \
- -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
++ -Wmissing-declarations -Wmissing-prototypes \
++ -Wmissing-variable-declarations -Wnested-externs \
+ -Wnull-dereference \
+ -Wold-style-definition -Woverlength-strings -Wpointer-arith \
+ -Wshadow -Wshift-overflow=2 -Wstrict-overflow \
+ -Wstrict-prototypes -Wstringop-overflow=4 \
+ -Wstringop-truncation -Wsuggest-attribute=cold \
+ -Wsuggest-attribute=const -Wsuggest-attribute=format \
+ -Wsuggest-attribute=malloc \
+ -Wsuggest-attribute=noreturn -Wsuggest-attribute=pure \
- -Wtrampolines -Wundef -Wuninitialized -Wunused-macros -Wuse-after-free=3 \
++ -Wtrampolines -Wundef -Wunused-macros -Wuse-after-free=3 \
+ -Wvariadic-macros -Wvla -Wwrite-strings \
- -Wno-address -Wno-format-nonliteral -Wno-sign-compare \
- -Wno-type-limits
++ -Wno-format-nonliteral -Wno-sign-compare
+#
+# If your system has a "GMT offset" field in its "struct tm"s
+# (or if you decide to add such a field in your system's "time.h" file),
+# add the name to a define such as
+# -DTM_GMTOFF=tm_gmtoff
+# to the end of the "CFLAGS=" line. If not defined, the code attempts to
+# guess TM_GMTOFF from other macros; define NO_TM_GMTOFF to suppress this.
+# Similarly, if your system has a "zone abbreviation" field, define
+# -DTM_ZONE=tm_zone
+# and define NO_TM_ZONE to suppress any guessing.
- # Although these two fields are not required by POSIX.1-2017,
- # POSIX 202x/D4 requires them and they are widely available
- # on GNU/Linux and BSD systems.
++# Although POSIX.1-2024 requires these fields and they are widely available
++# on GNU/Linux and BSD systems, some older systems lack them.
+#
+# The next batch of options control support for external variables
+# exported by tzcode. In practice these variables are less useful
+# than TM_GMTOFF and TM_ZONE. However, most of them are standardized.
+# #
+# # To omit or support the external variable "tzname", add one of:
+# # -DHAVE_TZNAME=0 # do not support "tzname"
+# # -DHAVE_TZNAME=1 # support "tzname", which is defined by system library
+# # -DHAVE_TZNAME=2 # support and define "tzname"
- # # to the "CFLAGS=" line. "tzname" is required by POSIX.1-1988 and later.
++# # to the "CFLAGS=" line. Although "tzname" is required by POSIX.1-1988
++# # and later, its contents are unspecified if you use a geographical TZ
++# # and the variable is planned to be removed in a future POSIX edition.
+# # If not defined, the code attempts to guess HAVE_TZNAME from other macros.
+# # Warning: unless time_tz is also defined, HAVE_TZNAME=1 can cause
+# # crashes when combined with some platforms' standard libraries,
+# # presumably due to memory allocation issues.
+# #
+# # To omit or support the external variables "timezone" and "daylight", add
+# # -DUSG_COMPAT=0 # do not support
+# # -DUSG_COMPAT=1 # support, and variables are defined by system library
+# # -DUSG_COMPAT=2 # support and define variables
+# # to the "CFLAGS=" line; "timezone" and "daylight" are inspired by Unix
- # # Systems Group code and are required by POSIX.1-2008 and later (with XSI).
++# # Systems Group code and are required by POSIX.1-2008 and later (with XSI),
++# # although their contents are unspecified if you use a geographical TZ
++# # and the variables are planned to be removed in a future edition of POSIX.
+# # If not defined, the code attempts to guess USG_COMPAT from other macros.
+# #
+# # To support the external variable "altzone", add
+# # -DALTZONE=0 # do not support
+# # -DALTZONE=1 # support "altzone", which is defined by system library
+# # -DALTZONE=2 # support and define "altzone"
+# # to the end of the "CFLAGS=" line; although "altzone" appeared in
+# # System V Release 3.1 it has not been standardized.
+# # If not defined, the code attempts to guess ALTZONE from other macros.
+#
+# If you want functions that were inspired by early versions of X3J11's work,
+# add
+# -DSTD_INSPIRED
+# to the end of the "CFLAGS=" line. This arranges for the following
+# functions to be added to the time conversion library.
+# "offtime" is like "gmtime" except that it accepts a second (long) argument
+# that gives an offset to add to the time_t when converting it.
+# I.e., "offtime" is like calling "localtime_rz" with a fixed-offset zone.
+# "timelocal" is nearly equivalent to "mktime".
+# "timeoff" is like "timegm" except that it accepts a second (long) argument
+# that gives an offset to use when converting to a time_t.
+# I.e., "timeoff" is like calling "mktime_z" with a fixed-offset zone.
+# "posix2time" and "time2posix" are described in an included manual page.
+# X3J11's work does not describe any of these functions.
+# These functions may well disappear in future releases of the time
+# conversion package.
+#
+# If you don't want functions that were inspired by NetBSD, add
+# -DNETBSD_INSPIRED=0
+# to the end of the "CFLAGS=" line. Otherwise, the functions
+# "localtime_rz", "mktime_z", "tzalloc", and "tzfree" are added to the
+# time library, and if STD_INSPIRED is also defined to nonzero the functions
+# "posix2time_z" and "time2posix_z" are added as well.
+# The functions ending in "_z" (or "_rz") are like their unsuffixed
+# (or suffixed-by-"_r") counterparts, except with an extra first
+# argument of opaque type timezone_t that specifies the timezone.
+# "tzalloc" allocates a timezone_t value, and "tzfree" frees it.
+#
+# If you want to allocate state structures in localtime, add
+# -DALL_STATE
+# to the end of the "CFLAGS=" line. Storage is obtained by calling malloc.
+#
+# NIST-PCTS:151-2, Version 1.4, (1993-12-03) is a test suite put
+# out by the National Institute of Standards and Technology
+# which claims to test C and POSIX conformance. If you want to pass PCTS, add
+# -DPCTS
+# to the end of the "CFLAGS=" line.
+#
+# If you want strict compliance with XPG4 as of 1994-04-09, add
+# -DXPG4_1994_04_09
+# to the end of the "CFLAGS=" line. This causes "strftime" to always return
+# 53 as a week number (rather than 52 or 53) for January days before
+# January's first Monday when a "%V" format is used and January 1
+# falls on a Friday, Saturday, or Sunday.
+#
+# POSIX says CFLAGS defaults to "-O 1".
+# Uncomment the following line and edit its contents as needed.
+
+#CFLAGS= -O 1
+
+
+# The name of a POSIX-like library archiver, its flags, C compiler,
+# linker flags, and 'make' utility. Ordinarily the defaults suffice.
- # The commented-out values are the defaults specified by POSIX.1-202x/D4.
++# The commented-out values are the defaults specified by POSIX.1-2024.
+#AR = ar
+#ARFLAGS = -rv
+#CC = c17
+#LDFLAGS =
+#MAKE = make
+
- # For leap seconds, this Makefile uses LEAPSECONDS='-L leapseconds' in
- # submake command lines. The default is no leap seconds.
-
- LEAPSECONDS=
-
+# Where to fetch leap-seconds.list from.
+leaplist_URI = \
+ https://hpiers.obspm.fr/iers/bul/bulc/ntp/leap-seconds.list
+# The file is generated by the IERS Earth Orientation Centre, in Paris.
+leaplist_TZ = Europe/Paris
+
+# The zic command and its arguments.
+
+zic= ./zic
+ZIC= $(zic) $(ZFLAGS)
+
+# To shrink the size of installed TZif files,
+# append "-r @N" to omit data before N-seconds-after-the-Epoch.
+# To grow the files and work around bugs in older applications,
+# possibly at the expense of introducing bugs in newer ones,
+# append "-b fat"; see ZIC_BLOAT_DEFAULT above.
+# See the zic man page for more about -b and -r.
+ZFLAGS=
+
+# How to use zic to install TZif files.
+
- ZIC_INSTALL= $(ZIC) -d '$(DESTDIR)$(TZDIR)' $(LEAPSECONDS)
++ZIC_INSTALL= $(ZIC) -d '$(DESTDIR)$(TZDIR)'
+
+# The name of a POSIX-compliant 'awk' on your system.
+# mawk 1.3.3 and Solaris 10 /usr/bin/awk do not work.
+# Also, it is better (though not essential) if 'awk' supports UTF-8,
+# and unfortunately mawk and busybox awk do not support UTF-8.
+# Try AWK=gawk or AWK=nawk if your awk has the abovementioned problems.
+AWK= awk
+
+# The full path name of a POSIX-compliant shell, preferably one that supports
+# the Korn shell's 'select' statement as an extension.
+# These days, Bash is the most popular.
+# It should be OK to set this to /bin/sh, on platforms where /bin/sh
+# lacks 'select' or doesn't completely conform to POSIX, but /bin/bash
+# is typically nicer if it works.
+KSHELL= /bin/bash
+
+# Name of curl <https://curl.haxx.se/>, used for HTML validation
+# and to fetch leap-seconds.list from upstream.
++# Set CURL=: to disable use of the Internet.
+CURL= curl
+
+# Name of GNU Privacy Guard <https://gnupg.org/>, used to sign distributions.
+GPG= gpg
+
+# This expensive test requires USE_LTZ.
+# To suppress it, define this macro to be empty.
+CHECK_TIME_T_ALTERNATIVES = check_time_t_alternatives
+
+# SAFE_CHAR is a regular expression that matches a safe character.
+# Some parts of this distribution are limited to safe characters;
+# others can use any UTF-8 character.
+# For now, the safe characters are a safe subset of ASCII.
+# The caller must set the shell variable 'sharp' to the character '#',
+# since Makefile macros cannot contain '#'.
+# TAB_CHAR is a single tab character, in single quotes.
+TAB_CHAR= ' '
+SAFE_CHARSET1= $(TAB_CHAR)' !\"'$$sharp'$$%&'\''()*+,./0123456789:;<=>?@'
+SAFE_CHARSET2= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\^_`'
+SAFE_CHARSET3= 'abcdefghijklmnopqrstuvwxyz{|}~'
+SAFE_CHARSET= $(SAFE_CHARSET1)$(SAFE_CHARSET2)$(SAFE_CHARSET3)
+SAFE_CHAR= '[]'$(SAFE_CHARSET)'-]'
+
+# These non-alphabetic, non-ASCII printable characters are Latin-1,
+# and so are likely displayable even in editors like XEmacs 21
+# that have limited display capabilities.
+UNUSUAL_OK_LATIN_1 = ¡¢£¤¥¦§¨©«¬®¯°±²³´¶·¸¹»¼½¾¿×÷
+# Non-ASCII non-letters that OK_CHAR allows, as these characters are
+# useful in commentary.
+UNUSUAL_OK_CHARSET= $(UNUSUAL_OK_LATIN_1)
+
+# Put this in a bracket expression to match spaces.
+s = [:space:]
+
+# OK_CHAR matches any character allowed in the distributed files.
+# This is the same as SAFE_CHAR, except that UNUSUAL_OK_CHARSET and
+# multibyte letters are also allowed so that commentary can contain a
+# few safe symbols and people's names and can quote non-English sources.
+# Other non-letters are limited to ASCII renderings for the
+# convenience of maintainers using XEmacs 21.5.34, which by default
+# mishandles Unicode characters U+0100 and greater.
+OK_CHAR= '[][:alpha:]$(UNUSUAL_OK_CHARSET)'$(SAFE_CHARSET)'-]'
+
+# SAFE_LINE matches a line of safe characters.
+# SAFE_SHARP_LINE is similar, except any OK character can follow '#';
+# this is so that comments can contain non-ASCII characters.
+# OK_LINE matches a line of OK characters.
+SAFE_LINE= '^'$(SAFE_CHAR)'*$$'
+SAFE_SHARP_LINE='^'$(SAFE_CHAR)'*('$$sharp$(OK_CHAR)'*)?$$'
+OK_LINE= '^'$(OK_CHAR)'*$$'
+
+# Flags to give 'tar' when making a distribution.
+# Try to use flags appropriate for GNU tar.
- GNUTARFLAGS= --format=pax --pax-option='delete=atime,delete=ctime' \
++GNUTARFLAGS= --format=pax --pax-option=delete=atime,delete=ctime \
+ --numeric-owner --owner=0 --group=0 \
+ --mode=go+u,go-w --sort=name
- TARFLAGS= `if tar $(GNUTARFLAGS) --version >/dev/null 2>&1; \
- then echo $(GNUTARFLAGS); \
- else :; \
- fi`
++SETUP_TAR= \
++ export LC_ALL=C && \
++ if tar $(GNUTARFLAGS) --version >/dev/null 2>&1; then \
++ TAR='tar $(GNUTARFLAGS)'; \
++ else \
++ TAR=tar; \
++ fi
+
+# Flags to give 'gzip' when making a distribution.
+GZIPFLAGS= -9n
+
+# When comparing .tzs files, use GNU diff's -F'^TZ=' option if supported.
+# This makes it easier to see which Zone has been affected.
- DIFF_TZS= diff -u$$(! diff -u -F'^TZ=' - - <>/dev/null >&0 2>&1 \
- || echo ' -F^TZ=')
++SETUP_DIFF_TZS = \
++ if diff -u -F'^TZ=' - - <>/dev/null >&0 2>&1; then \
++ DIFF_TZS='diff -u -F^TZ='; \
++ else \
++ DIFF_TZS='diff -u'; \
++ fi
+
+# ':' on typical hosts; 'ranlib' on the ancient hosts that still need ranlib.
+RANLIB= :
+
+# POSIX prohibits defining or using SHELL. However, csh users on systems
+# that use the user shell for Makefile commands may need to define SHELL.
+#SHELL= /bin/sh
+
+# End of macros that one plausibly might want to tailor.
+###############################################################################
+
+
+TZCOBJS= zic.o
- TZDOBJS= zdump.o localtime.o asctime.o strftime.o
- DATEOBJS= date.o localtime.o strftime.o asctime.o
++TZDOBJS= zdump.o localtime.o strftime.o
++DATEOBJS= date.o localtime.o strftime.o
+LIBSRCS= localtime.c asctime.c difftime.c strftime.c
+LIBOBJS= localtime.o asctime.o difftime.o strftime.o
+HEADERS= tzfile.h private.h
+NONLIBSRCS= zic.c zdump.c
+NEWUCBSRCS= date.c
+SOURCES= $(HEADERS) $(LIBSRCS) $(NONLIBSRCS) $(NEWUCBSRCS) \
+ tzselect.ksh workman.sh
+MANS= newctime.3 newstrftime.3 newtzset.3 time2posix.3 \
+ tzfile.5 tzselect.8 zic.8 zdump.8
+MANTXTS= newctime.3.txt newstrftime.3.txt newtzset.3.txt \
+ time2posix.3.txt \
+ tzfile.5.txt tzselect.8.txt zic.8.txt zdump.8.txt \
+ date.1.txt
+COMMON= calendars CONTRIBUTING LICENSE Makefile \
+ NEWS README SECURITY theory.html version
+WEB_PAGES= tz-art.html tz-how-to.html tz-link.html
- CHECK_WEB_PAGES=check_theory.html check_tz-art.html \
- check_tz-how-to.html check_tz-link.html
++CHECK_WEB_PAGES=theory.ck tz-art.ck tz-how-to.ck tz-link.ck
+DOCS= $(MANS) date.1 $(MANTXTS) $(WEB_PAGES)
+PRIMARY_YDATA= africa antarctica asia australasia \
+ europe northamerica southamerica
+YDATA= $(PRIMARY_YDATA) etcetera
+NDATA= factory
+TDATA_TO_CHECK= $(YDATA) $(NDATA) backward
+TDATA= $(YDATA) $(NDATA) $(BACKWARD)
+ZONETABLES= zone.tab zone1970.tab zonenow.tab
+TABDATA= iso3166.tab $(TZDATA_TEXT) $(ZONETABLES)
+LEAP_DEPS= leapseconds.awk leap-seconds.list
+TZDATA_ZI_DEPS= ziguard.awk zishrink.awk version $(TDATA) \
+ $(PACKRATDATA) $(PACKRATLIST)
+DSTDATA_ZI_DEPS= ziguard.awk $(TDATA) $(PACKRATDATA) $(PACKRATLIST)
+DATA= $(TDATA_TO_CHECK) backzone iso3166.tab leap-seconds.list \
+ leapseconds $(ZONETABLES)
+AWK_SCRIPTS= checklinks.awk checknow.awk checktab.awk leapseconds.awk \
+ ziguard.awk zishrink.awk
+MISC= $(AWK_SCRIPTS)
+TZS_YEAR= 2050
+TZS_CUTOFF_FLAG= -c $(TZS_YEAR)
+TZS= to$(TZS_YEAR).tzs
+TZS_NEW= to$(TZS_YEAR)new.tzs
+TZS_DEPS= $(YDATA) asctime.c localtime.c \
+ private.h tzfile.h zdump.c zic.c
+TZDATA_DIST = $(COMMON) $(DATA) $(MISC)
+# EIGHT_YARDS is just a yard short of the whole ENCHILADA.
+EIGHT_YARDS = $(TZDATA_DIST) $(DOCS) $(SOURCES) tzdata.zi
+ENCHILADA = $(EIGHT_YARDS) $(TZS)
+
+# Consult these files when deciding whether to rebuild the 'version' file.
+# This list is not the same as the output of 'git ls-files', since
+# .gitignore is not distributed.
+VERSION_DEPS= \
+ calendars CONTRIBUTING LICENSE Makefile NEWS README SECURITY \
+ africa antarctica asctime.c asia australasia \
+ backward backzone \
+ checklinks.awk checknow.awk checktab.awk \
+ date.1 date.c difftime.c \
+ etcetera europe factory iso3166.tab \
+ leap-seconds.list leapseconds.awk localtime.c \
+ newctime.3 newstrftime.3 newtzset.3 northamerica \
+ private.h southamerica strftime.c theory.html \
+ time2posix.3 tz-art.html tz-how-to.html tz-link.html \
+ tzfile.5 tzfile.h tzselect.8 tzselect.ksh \
+ workman.sh zdump.8 zdump.c zic.8 zic.c \
+ ziguard.awk zishrink.awk \
+ zone.tab zone1970.tab zonenow.tab
+
+all: tzselect zic zdump libtz.a $(TABDATA) \
+ vanguard.zi main.zi rearguard.zi
+
+ALL: all date $(ENCHILADA)
+
+install: all $(DATA) $(REDO) $(MANS)
+ mkdir -p '$(DESTDIR)$(BINDIR)' \
+ '$(DESTDIR)$(ZDUMPDIR)' '$(DESTDIR)$(ZICDIR)' \
+ '$(DESTDIR)$(LIBDIR)' \
+ '$(DESTDIR)$(MANDIR)/man3' '$(DESTDIR)$(MANDIR)/man5' \
+ '$(DESTDIR)$(MANDIR)/man8'
+ $(ZIC_INSTALL) -l $(LOCALTIME) \
- `case '$(POSIXRULES)' in ?*) echo '-p';; esac \
- ` $(POSIXRULES) \
++ -p $(POSIXRULES) \
+ -t '$(DESTDIR)$(TZDEFAULT)'
+ cp -f $(TABDATA) '$(DESTDIR)$(TZDIR)/.'
+ cp tzselect '$(DESTDIR)$(BINDIR)/.'
+ cp zdump '$(DESTDIR)$(ZDUMPDIR)/.'
+ cp zic '$(DESTDIR)$(ZICDIR)/.'
+ cp libtz.a '$(DESTDIR)$(LIBDIR)/.'
+ $(RANLIB) '$(DESTDIR)$(LIBDIR)/libtz.a'
+ cp -f newctime.3 newtzset.3 '$(DESTDIR)$(MANDIR)/man3/.'
+ cp -f tzfile.5 '$(DESTDIR)$(MANDIR)/man5/.'
+ cp -f tzselect.8 zdump.8 zic.8 '$(DESTDIR)$(MANDIR)/man8/.'
+
+INSTALL: ALL install date.1
+ mkdir -p '$(DESTDIR)$(BINDIR)' '$(DESTDIR)$(MANDIR)/man1'
+ cp date '$(DESTDIR)$(BINDIR)/.'
+ cp -f date.1 '$(DESTDIR)$(MANDIR)/man1/.'
+
+# Calculate version number from git, if available.
+# Otherwise, use $(VERSION) unless it is "unknown" and there is already
+# a 'version' file, in which case reuse the existing 'version' contents
+# and append "-dirty" if the contents do not already end in "-dirty".
+version: $(VERSION_DEPS)
+ { (type git) >/dev/null 2>&1 && \
- V=`git describe --match '[0-9][0-9][0-9][0-9][a-z]*' \
- --abbrev=7 --dirty` || \
- if test '$(VERSION)' = unknown && V=`cat $@`; then \
- case $$V in *-dirty);; *) V=$$V-dirty;; esac; \
++ V=$$(git describe --match '[0-9][0-9][0-9][0-9][a-z]*' \
++ --abbrev=7 --dirty) || \
++ if test '$(VERSION)' = unknown && read -r V <$@; then \
++ V=$${V%-dirty}-dirty; \
+ else \
+ V='$(VERSION)'; \
+ fi; } && \
+ printf '%s\n' "$$V" >$@.out
+ mv $@.out $@
+
+# These files can be tailored by setting BACKWARD, PACKRATDATA, PACKRATLIST.
+vanguard.zi main.zi rearguard.zi: $(DSTDATA_ZI_DEPS)
+ $(AWK) \
- -v DATAFORM=`expr $@ : '\(.*\).zi'` \
++ -v DATAFORM=$(@:.zi=) \
+ -v PACKRATDATA='$(PACKRATDATA)' \
+ -v PACKRATLIST='$(PACKRATLIST)' \
+ -f ziguard.awk \
+ $(TDATA) $(PACKRATDATA) >$@.out
+ mv $@.out $@
+# This file has a version comment that attempts to capture any tailoring
+# via BACKWARD, DATAFORM, PACKRATDATA, PACKRATLIST, and REDO.
+tzdata.zi: $(DATAFORM).zi version zishrink.awk
- version=`sed 1q version` && \
++ read -r version <version && \
+ LC_ALL=C $(AWK) \
+ -v dataform='$(DATAFORM)' \
+ -v deps='$(DSTDATA_ZI_DEPS) zishrink.awk' \
+ -v redo='$(REDO)' \
+ -v version="$$version" \
+ -f zishrink.awk \
+ $(DATAFORM).zi >$@.out
+ mv $@.out $@
+
+tzdir.h:
+ printf '%s\n' >$@.out \
+ '#ifndef TZDEFAULT' \
+ '# define TZDEFAULT "$(TZDEFAULT)" /* default zone */' \
+ '#endif' \
+ '#ifndef TZDIR' \
+ '# define TZDIR "$(TZDIR)" /* TZif directory */' \
+ '#endif'
+ mv $@.out $@
+
+version.h: version
- VERSION=`cat version` && printf '%s\n' \
++ read -r VERSION <version && printf '%s\n' \
+ 'static char const PKGVERSION[]="($(PACKAGE)) ";' \
+ "static char const TZVERSION[]=\"$$VERSION\";" \
+ 'static char const REPORT_BUGS_TO[]="$(BUGEMAIL)";' \
+ >$@.out
+ mv $@.out $@
+
+zdump: $(TZDOBJS)
+ $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZDOBJS) $(LDLIBS)
+
+zic: $(TZCOBJS)
+ $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZCOBJS) $(LDLIBS)
+
+leapseconds: $(LEAP_DEPS)
+ $(AWK) -v EXPIRES_LINE=$(EXPIRES_LINE) \
+ -f leapseconds.awk leap-seconds.list >$@.out
+ mv $@.out $@
+
+# Awk script to extract a Git-style author from leap-seconds.list comments.
+EXTRACT_AUTHOR = \
+ author_line { sub(/^.[[:space:]]*/, ""); \
+ sub(/:[[:space:]]*/, " <"); \
+ printf "%s>\n", $$0; \
+ success = 1; \
+ exit \
+ } \
+ /Questions or comments to:/ { author_line = 1 } \
+ END { exit !success }
+
+# Fetch leap-seconds.list from upstream.
+fetch-leap-seconds.list:
+ $(CURL) -OR $(leaplist_URI)
+
+# Fetch leap-seconds.list from upstream and commit it to the local repository.
+commit-leap-seconds.list: fetch-leap-seconds.list
+ author=$$($(AWK) '$(EXTRACT_AUTHOR)' leap-seconds.list) && \
+ date=$$(TZ=$(leaplist_TZ) stat -c%y leap-seconds.list) && \
+ git commit --author="$$author" --date="$$date" -m'make $@' \
+ leap-seconds.list
+
- # Arguments to pass to submakes of install_data.
++# Arguments to pass to submakes.
+# They can be overridden by later submake arguments.
+INSTALLARGS = \
+ BACKWARD='$(BACKWARD)' \
+ DESTDIR='$(DESTDIR)' \
- LEAPSECONDS='$(LEAPSECONDS)' \
+ PACKRATDATA='$(PACKRATDATA)' \
+ PACKRATLIST='$(PACKRATLIST)' \
+ TZDEFAULT='$(TZDEFAULT)' \
+ TZDIR='$(TZDIR)' \
+ ZIC='$(ZIC)'
+
+INSTALL_DATA_DEPS = zic leapseconds tzdata.zi
+
- # 'make install_data' installs one set of TZif files.
- install_data: $(INSTALL_DATA_DEPS)
- $(ZIC_INSTALL) tzdata.zi
-
+posix_only: $(INSTALL_DATA_DEPS)
- $(MAKE) $(INSTALLARGS) LEAPSECONDS= install_data
++ $(ZIC_INSTALL) tzdata.zi
+
+right_only: $(INSTALL_DATA_DEPS)
- $(MAKE) $(INSTALLARGS) LEAPSECONDS='-L leapseconds' \
- install_data
++ $(ZIC_INSTALL) -L leapseconds tzdata.zi
+
+# In earlier versions of this makefile, the other two directories were
+# subdirectories of $(TZDIR). However, this led to configuration errors.
+# For example, with posix_right under the earlier scheme,
+# TZ='right/Australia/Adelaide' got you localtime with leap seconds,
+# but gmtime without leap seconds, which led to problems with applications
+# like sendmail that subtract gmtime from localtime.
+# Therefore, the other two directories are now siblings of $(TZDIR).
+# You must replace all of $(TZDIR) to switch from not using leap seconds
+# to using them, or vice versa.
+right_posix: right_only
+ rm -fr '$(DESTDIR)$(TZDIR)-leaps'
+ ln -s '$(TZDIR_BASENAME)' '$(DESTDIR)$(TZDIR)-leaps' || \
+ $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only
+ $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only
+
+posix_right: posix_only
+ rm -fr '$(DESTDIR)$(TZDIR)-posix'
+ ln -s '$(TZDIR_BASENAME)' '$(DESTDIR)$(TZDIR)-posix' || \
+ $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only
+ $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only
+
+zones: $(REDO)
+
+# dummy.zd is not a real file; it is mentioned here only so that the
+# top-level 'make' does not have a syntax error.
+ZDS = dummy.zd
+# Rule used only by submakes invoked by the $(TZS_NEW) rule.
+# It is separate so that GNU 'make -j' can run instances in parallel.
+$(ZDS): zdump
- ./zdump -i $(TZS_CUTOFF_FLAG) '$(wd)/'$$(expr $@ : '\(.*\).zd') \
- >$@
++ ./zdump -i $(TZS_CUTOFF_FLAG) "$$PWD/$(@:.zd=)" >$@
+
+TZS_NEW_DEPS = tzdata.zi zdump zic
+$(TZS_NEW): $(TZS_NEW_DEPS)
+ rm -fr tzs$(TZS_YEAR).dir
+ mkdir tzs$(TZS_YEAR).dir
+ $(zic) -d tzs$(TZS_YEAR).dir tzdata.zi
+ $(AWK) '/^L/{print "Link\t" $$2 "\t" $$3}' \
+ tzdata.zi | LC_ALL=C sort >$@.out
- wd=`pwd` && \
- x=`$(AWK) '/^Z/{print "tzs$(TZS_YEAR).dir/" $$2 ".zd"}' \
++ x=$$($(AWK) '/^Z/{print "tzs$(TZS_YEAR).dir/" $$2 ".zd"}' \
+ tzdata.zi \
- | LC_ALL=C sort -t . -k 2,2` && \
++ | LC_ALL=C sort -t . -k 2,2) && \
+ set x $$x && \
+ shift && \
+ ZDS=$$* && \
- $(MAKE) wd="$$wd" TZS_CUTOFF_FLAG="$(TZS_CUTOFF_FLAG)" \
++ $(MAKE) TZS_CUTOFF_FLAG="$(TZS_CUTOFF_FLAG)" \
+ ZDS="$$ZDS" $$ZDS && \
+ sed 's,^TZ=".*\.dir/,TZ=",' $$ZDS >>$@.out
+ rm -fr tzs$(TZS_YEAR).dir
+ mv $@.out $@
+
- # If $(TZS) exists but 'make check_tzs' fails, a maintainer should inspect the
++# If $(TZS) exists but 'make tzs.ck' fails, a maintainer should inspect the
+# failed output and fix the inconsistency, perhaps by running 'make force_tzs'.
+$(TZS):
+ touch $@
+
+force_tzs: $(TZS_NEW)
+ cp $(TZS_NEW) $(TZS)
+
+libtz.a: $(LIBOBJS)
+ rm -f $@
+ $(AR) $(ARFLAGS) $@ $(LIBOBJS)
+ $(RANLIB) $@
+
+date: $(DATEOBJS)
+ $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(DATEOBJS) $(LDLIBS)
+
+tzselect: tzselect.ksh version
- VERSION=`cat version` && sed \
++ read -r VERSION <version && sed \
+ -e "s'#!/bin/bash'#!"'$(KSHELL)'\' \
+ -e s\''\(AWK\)=[^}]*'\''\1=\'\''$(AWK)\'\'\' \
+ -e s\''\(PKGVERSION\)=.*'\''\1=\'\''($(PACKAGE)) \'\'\' \
+ -e s\''\(REPORT_BUGS_TO\)=.*'\''\1=\'\''$(BUGEMAIL)\'\'\' \
+ -e s\''\(TZDIR\)=[^}]*'\''\1=\'\''$(TZDIR)\'\'\' \
+ -e s\''\(TZVERSION\)=.*'\''\1=\'"'$$VERSION\\''" \
+ <$@.ksh >$@.out
+ chmod +x $@.out
+ mv $@.out $@
+
- check: check_back check_mild
- check_mild: check_character_set check_white_space check_links \
- check_name_lengths check_now \
- check_slashed_abbrs check_sorted \
- check_tables check_web check_ziguard check_zishrink check_tzs
++check: check_mild back.ck
++check_mild: check_web check_zishrink \
++ character-set.ck white-space.ck links.ck mainguard.ck \
++ name-lengths.ck now.ck slashed-abbrs.ck sorted.ck \
++ tables.ck ziguard.ck tzs.ck
+
+# True if UTF8_LOCALE does not work;
+# otherwise, false but with LC_ALL set to $(UTF8_LOCALE).
+UTF8_LOCALE_MISSING = \
+ { test ! '$(UTF8_LOCALE)' \
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