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File: [cvs.NetBSD.org] / src / lib / libc / time / Makefile (download)

Revision 1.44, Wed Jul 3 15:50:16 2019 UTC (16 months, 3 weeks ago) by christos
Branch: MAIN
CVS Tags: phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, netbsd-9-base, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, is-mlppp-base, is-mlppp
Changes since 1.43: +33 -12 lines

Sync with 2019b:

    zic's new -b option supports a way to control data bloat and to
    test for year-2038 bugs in software that reads TZif files.
    'zic -b fat' and 'zic -b slim' generate larger and smaller output;
    for example, changing from fat to slim shrinks the Europe/London
    file from 3648 to 1599 bytes, saving about 56%.  Fat and slim
    files represent the same set of timestamps and use the same TZif
    format as documented in tzfile(5) and in Internet RFC 8536.
    Fat format attempts to work around bugs or incompatibilities in
    older software, notably software that mishandles 64-bit TZif data
    or uses obsolete TZ strings like "EET-2EEST" that lack DST rules.
    Slim format is more efficient and does not work around 64-bit bugs
    or obsolete TZ strings.  Currently zic defaults to fat format
    unless you compile with -DZIC_BLOAT_DEFAULT=\"slim\"; this
    out-of-the-box default is intended to change in future releases
    as the buggy software often mishandles timestamps anyway.

    zic no longer treats a set of rules ending in 2037 specially.
    Previously, zic assumed that such a ruleset meant that future
    timestamps could not be predicted, and therefore omitted a
    POSIX-like TZ string in the TZif output.  The old behavior is no
    longer needed for current tzdata, and caused problems with newlib
    when used with older tzdata (reported by David Gauchard).

    zic no longer generates some artifact transitions.  For example,
    Europe/London no longer has a no-op transition in January 1996.

# 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.

# 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
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 rightzone
# to correct things.
# Use the command
#	make zonenames
# to get a list of the values you can use for LOCALTIME.

LOCALTIME=	GMT

# The POSIXRULES macro controls interpretation of nonstandard and obsolete
# POSIX-like TZ settings like TZ='EET-2EEST' that lack DST transition rules.
# In the reference implementation, if you want something other than Eastern
# United States time as 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).
# A setting like TZ='EET-2EEST' is supposed to use the rules in the
# template file to determine "spring forward" and "fall back" days and
# times; the environment variable itself specifies UT offsets of standard and
# daylight saving time.
# Alternatively, if you discover you've got the wrong timezone, you can just
#	zic -p rightzone
# to correct things.
# Use the command
#	make zonenames
# to get a list of the values you can use for POSIXRULES.
#
# If POSIXRULES is empty, no template is installed; this is the intended
# future default for POSIXRULES.
#
# Nonempty POSIXRULES is obsolete and should not be relied on, because:
# * It does not work correctly in popular implementations such as GNU/Linux.
# * It does not work in the tzdb implementation for timestamps after 2037.
# * It is incompatible with 'zic -b slim' if POSIXRULES specifies transitions
#   at standard time or UT rather than at local time.
# In short, software should avoid ruleless settings like TZ='EET-2EEST'
# and so should not depend on the value of POSIXRULES.

POSIXRULES=	America/New_York

# Also see TZDEFRULESTRING below, which takes effect only
# if the time zone files 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 = int64_t
TIME_T_ALTERNATIVES_TAIL = int32_t uint32_t uint64_t

# 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

# 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
# If you also want the link US/Pacific-New, even though it is confusing
# and is planned to be removed from the database eventually, use
#	BACKWARD=	backward pacificnew
# To omit these links, use
#	BACKWARD=

BACKWARD=	backward

# If you want out-of-scope and often-wrong data from the file 'backzone', use
#	PACKRATDATA=	backzone
# To omit this data, use
#	PACKRATDATA=

PACKRATDATA=

# 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

# Since "." may not be in PATH...

YEARISTYPE=	./yearistype

# Non-default libraries needed to link.
LDLIBS=

# Add the following to the end of the "CFLAGS=" line as needed to override
# defaults specified in the source code.  "-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
#  -DHAVE_DECL_ENVIRON if <unistd.h> declares 'environ'
#  -DHAVE_DIRECT_H if mkdir needs <direct.h> (MS-Windows)
#  -DHAVE_GENERIC=0 if _Generic does not work
#  -DHAVE_GETTEXT if 'gettext' works (e.g., GNU/Linux, FreeBSD, Solaris)
#  -DHAVE_INCOMPATIBLE_CTIME_R if your system's time.h declares
#	ctime_r and asctime_r incompatibly with the POSIX standard
#	(Solaris when _POSIX_PTHREAD_SEMANTICS is not defined).
#  -DHAVE_INTTYPES_H if you have a non-C99 compiler with <inttypes.h>
#  -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_POSIX_DECLS=0 if your system's include files do not declare
#	functions like 'link' or variables like 'tzname' required by POSIX
#  -DHAVE_SNPRINTF=0 if your system lacks the snprintf function
#  -DHAVE_STDBOOL_H if you have a non-C99 compiler with <stdbool.h>
#  -DHAVE_STDINT_H if you have a non-C99 compiler with <stdint.h>
#  -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 your compiler lacks a <sys/stat.h>
#  -DHAVE_SYS_WAIT_H=0 if your compiler lacks a <sys/wait.h>
#  -DHAVE_TZSET=0 if your system lacks a tzset function
#  -DHAVE_UNISTD_H=0 if your compiler lacks a <unistd.h>
#  -Dlocale_t=XXX if your system uses XXX instead of locale_t
#  -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
#  -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 if the time zone files cannot be accessed
#  -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=\"slim\" to default zic's -b option to "slim", and
#	similarly for "fat".  Fat TZif files work around incompatibilities
#	and bugs in some TZif readers, notably readers that mishandle 64-bit
#	data in TZif files.  Slim TZif files are more efficient and do not
#	work around these incompatibilities and bugs.  If not given, the
#	current default is "fat" but this is intended to change as readers
#	requiring fat files often mishandle timestamps after 2037 anyway.
#  -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)
#  $(GCC_DEBUG_FLAGS) if you are using recent GCC and want lots of checking
# Select instrumentation via "make GCC_INSTRUMENT='whatever'".
GCC_INSTRUMENT = \
  -fsanitize=undefined -fsanitize-address-use-after-scope \
  -fsanitize-undefined-trap-on-error -fstack-protector
GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \
  $(GCC_INSTRUMENT) \
  -Wall -Wextra \
  -Walloc-size-larger-than=100000 -Warray-bounds=2 \
  -Wbad-function-cast -Wcast-align=strict -Wdate-time \
  -Wdeclaration-after-statement -Wdouble-promotion \
  -Wformat=2 -Wformat-overflow=2 -Wformat-signedness -Wformat-truncation \
  -Winit-self -Wjump-misses-init -Wlogical-op \
  -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
  -Wold-style-definition -Woverlength-strings -Wpointer-arith \
  -Wshadow -Wshift-overflow=2 -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 \
  -Wvariadic-macros -Wvla -Wwrite-strings \
  -Wno-address -Wno-format-nonliteral -Wno-sign-compare \
  -Wno-type-limits -Wno-unused-parameter
#
# 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.  These two fields are not
# required by POSIX, but are widely available on GNU/Linux and BSD systems.
#
# 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
# #	-DHAVE_TZNAME=1
# # to the "CFLAGS=" line.  "tzname" is required by POSIX 1988 and later.
# # 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
# #	-DUSG_COMPAT=1
# # to the "CFLAGS=" line; "timezone" and "daylight" are inspired by
# # Unix Systems Group code and are required by POSIX 2008 (with XSI) and later.
# # If not defined, the code attempts to guess USG_COMPAT from other macros.
# #
# # To support the external variable "altzone", add
# #	-DALTZONE
# # to the end of the "CFLAGS=" line; although "altzone" appeared in
# # System V Release 3.1 it has not been standardized.
#
# 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 functions
# "tzsetwall", "offtime", "timelocal", "timegm", "timeoff",
# "posix2time", and "time2posix" to be added to the time conversion library.
# "tzsetwall" is like "tzset" except that it arranges for local wall clock
# time (rather than the timezone specified in the TZ environment variable)
# to be used.
# "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.
# "timelocal" is equivalent to "mktime".
# "timegm" is like "timelocal" except that it turns a struct tm into
# a time_t using UT (rather than local time as "timelocal" does).
# "timeoff" is like "timegm" except that it accepts a second (long) argument
# that gives an offset to use when converting to a time_t.
# "posix2time" and "time2posix" are described in an included manual page.
# X3J11's work does not describe any of these functions.
# Sun has provided "tzsetwall", "timelocal", and "timegm" in SunOS 4.0.
# 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 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.

CFLAGS=

# Linker flags.  Default to $(LFLAGS) for backwards compatibility
# to release 2012h and earlier.

LDFLAGS=	$(LFLAGS)

# For leap seconds, this Makefile uses LEAPSECONDS='-L leapseconds' in
# submake command lines.  The default is no leap seconds.

LEAPSECONDS=

# 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.
# You can also append "-b slim" if that is not already the default;
# 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)

# The name of a Posix-compliant 'awk' on your system.
# Older 'mawk' versions, such as the 'mawk' in Ubuntu 16.04, might dump core;
# on Ubuntu you can work around this with
#	AWK=		gawk
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.
CURL=		curl

# Name of GNU Privacy Guard <https://gnupg.org/>, used to sign distributions.
GPG=		gpg

# The path where SGML DTDs are kept and the catalog file(s) to use when
# validating HTML 4.01.  The default should work on both Debian and Red Hat.
SGML_TOPDIR= /usr
SGML_DTDDIR= $(SGML_TOPDIR)/share/xml/w3c-sgml-lib/schema/dtd
SGML_SEARCH_PATH= $(SGML_DTDDIR)/REC-html401-19991224
SGML_CATALOG_FILES= \
  $(SGML_TOPDIR)/share/doc/w3-recs/html/www.w3.org/TR/1999/REC-html401-19991224/HTML4.cat:$(SGML_TOPDIR)/share/sgml/html/4.01/HTML4.cat

# The name, arguments and environment of a program to validate HTML 4.01.
# See <http://openjade.sourceforge.net/doc/> for a validator, and
# <https://validator.w3.org/source/> for a validation library.
# Set VALIDATE=':' if you do not have such a program.
VALIDATE = nsgmls
VALIDATE_FLAGS = -s -B -wall -wno-unused-param
VALIDATE_ENV = \
  SGML_CATALOG_FILES='$(SGML_CATALOG_FILES)' \
  SGML_SEARCH_PATH='$(SGML_SEARCH_PATH)' \
  SP_CHARSET_FIXED=YES \
  SP_ENCODING=UTF-8

# 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 characters are Latin-1, and so are likely to be displayable
# even in editors with limited character sets.
UNUSUAL_OK_LATIN_1 = «°±»½¾
# This IPA symbol is represented in Unicode as the composition of
# U+0075 and U+032F, and U+032F is not considered alphabetic by some
# grep implementations that do not grok composition.
UNUSUAL_OK_IPA = u̯
# Non-ASCII non-letters that OK_CHAR allows, as these characters are
# useful in commentary.
UNUSUAL_OK_CHARSET= $(UNUSUAL_OK_LATIN_1)$(UNUSUAL_OK_IPA)

# 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= --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`

# Flags to give 'gzip' when making a distribution.
GZIPFLAGS=	-9n

###############################################################################

#MAKE=		make

cc=		cc
CC=		$(cc) -DTZDIR='"$(TZDIR)"'

AR=		ar

# ':' on typical hosts; 'ranlib' on the ancient hosts that still need ranlib.
RANLIB=		:

TZCOBJS=	zic.o
TZDOBJS=	zdump.o localtime.o asctime.o strftime.o
DATEOBJS=	date.o localtime.o strftime.o asctime.o
LIBSRCS=	localtime.c asctime.c difftime.c
LIBOBJS=	localtime.o asctime.o difftime.o
HEADERS=	tzfile.h private.h
NONLIBSRCS=	zic.c zdump.c
NEWUCBSRCS=	date.c strftime.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 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
DOCS=		$(MANS) date.1 $(MANTXTS) $(WEB_PAGES)
PRIMARY_YDATA=	africa antarctica asia australasia \
		europe northamerica southamerica
YDATA=		$(PRIMARY_YDATA) etcetera
NDATA=		systemv factory
TDATA_TO_CHECK=	$(YDATA) $(NDATA) backward pacificnew
TDATA=		$(YDATA) $(NDATA) $(BACKWARD)
ZONETABLES=	zone1970.tab zone.tab
TABDATA=	iso3166.tab $(TZDATA_TEXT) $(ZONETABLES)
LEAP_DEPS=	leapseconds.awk leap-seconds.list
TZDATA_ZI_DEPS=	ziguard.awk zishrink.awk version $(TDATA) $(PACKRATDATA)
DSTDATA_ZI_DEPS= ziguard.awk $(TDATA) $(PACKRATDATA)
DATA=		$(TDATA_TO_CHECK) backzone iso3166.tab leap-seconds.list \
			leapseconds yearistype.sh $(ZONETABLES)
AWK_SCRIPTS=	checklinks.awk checktab.awk leapseconds.awk \
			ziguard.awk zishrink.awk
MISC=		$(AWK_SCRIPTS) zoneinfo2tdf.pl
TZS_YEAR=	2050
TZS_CUTOFF_FLAG=	-c $(TZS_YEAR)
TZS=		to$(TZS_YEAR).tzs
TZS_NEW=	to$(TZS_YEAR)new.tzs
TZS_DEPS=	$(PRIMARY_YDATA) asctime.c localtime.c \
			private.h tzfile.h zdump.c zic.c
# EIGHT_YARDS is just a yard short of the whole ENCHILADA.
EIGHT_YARDS = $(COMMON) $(DOCS) $(SOURCES) $(DATA) $(MISC) 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 \
		africa antarctica asctime.c asia australasia \
		backward backzone \
		checklinks.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 \
		pacificnew private.h \
		southamerica strftime.c systemv theory.html \
		time2posix.3 tz-art.html tz-how-to.html tz-link.html \
		tzfile.5 tzfile.h tzselect.8 tzselect.ksh \
		workman.sh yearistype.sh \
		zdump.8 zdump.c zic.8 zic.c \
		ziguard.awk zishrink.awk \
		zone.tab zone1970.tab zoneinfo2tdf.pl

# And for the benefit of csh users on systems that assume the user
# shell should be used to handle commands in Makefiles. . .

SHELL=		/bin/sh

all:		tzselect yearistype 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 \
			` $(POSIXRULES) \
			-t '$(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/.'

version:	$(VERSION_DEPS)
		{ (type git) >/dev/null 2>&1 && \
		  V=`git describe --match '[0-9][0-9][0-9][0-9][a-z]*' \
				--abbrev=7 --dirty` || \
		  V='$(VERSION)'; } && \
		printf '%s\n' "$$V" >$@.out
		mv $@.out $@

# These files can be tailored by setting BACKWARD and PACKRATDATA.
vanguard.zi main.zi rearguard.zi: $(DSTDATA_ZI_DEPS)
		$(AWK) -v DATAFORM=`expr $@ : '\(.*\).zi'` -f ziguard.awk \
		  $(TDATA) $(PACKRATDATA) >$@.out
		mv $@.out $@
# This file has a version comment that attempts to capture any tailoring
# via BACKWARD, DATAFORM, PACKRATDATA, and REDO.
tzdata.zi:	$(DATAFORM).zi version zishrink.awk
		version=`sed 1q 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 $@

version.h:	version
		VERSION=`cat 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)

yearistype:	yearistype.sh
		cp yearistype.sh yearistype
		chmod +x yearistype

leapseconds:	$(LEAP_DEPS)
		$(AWK) -f leapseconds.awk leap-seconds.list >$@.out
		mv $@.out $@

# Arguments to pass to submakes of install_data.
# They can be overridden by later submake arguments.
INSTALLARGS = \
 BACKWARD='$(BACKWARD)' \
 DESTDIR='$(DESTDIR)' \
 LEAPSECONDS='$(LEAPSECONDS)' \
 PACKRATDATA='$(PACKRATDATA)' \
 TZDEFAULT='$(TZDEFAULT)' \
 TZDIR='$(TZDIR)' \
 YEARISTYPE='$(YEARISTYPE)' \
 ZIC='$(ZIC)'

INSTALL_DATA_DEPS = zic leapseconds yearistype 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

right_only: $(INSTALL_DATA_DEPS)
		$(MAKE) $(INSTALLARGS) LEAPSECONDS='-L leapseconds' \
			install_data

# 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

# This obsolescent rule is present for backwards compatibility with
# tz releases 2014g through 2015g.  It should go away eventually.
posix_packrat: $(INSTALL_DATA_DEPS)
		$(MAKE) $(INSTALLARGS) PACKRATDATA=backzone posix_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') \
		  >$@

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/" $$2 ".zd"}' \
				tzdata.zi \
			| LC_ALL=C sort -t . -k 2,2` && \
		set x $$x && \
		shift && \
		ZDS=$$* && \
		$(MAKE) wd="$$wd" 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
# 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) -rc $@ $(LIBOBJS)
		$(RANLIB) $@

date:		$(DATEOBJS)
		$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(DATEOBJS) $(LDLIBS)

tzselect:	tzselect.ksh version
		VERSION=`cat version` && sed \
			-e 's|#!/bin/bash|#!$(KSHELL)|g' \
			-e 's|AWK=[^}]*|AWK=$(AWK)|g' \
			-e 's|\(PKGVERSION\)=.*|\1='\''($(PACKAGE)) '\''|' \
			-e 's|\(REPORT_BUGS_TO\)=.*|\1=$(BUGEMAIL)|' \
			-e 's|TZDIR=[^}]*|TZDIR=$(TZDIR)|' \
			-e 's|\(TZVERSION\)=.*|\1='"$$VERSION"'|' \
			<$@.ksh >$@.out
		chmod +x $@.out
		mv $@.out $@

check:		check_character_set check_white_space check_links \
		  check_name_lengths check_sorted \
		  check_tables check_web check_zishrink check_tzs

check_character_set: $(ENCHILADA)
	test ! '$(UTF8_LOCALE)' || \
	! printf 'A\304\200B\n' | \
	  LC_ALL='$(UTF8_LOCALE)' grep -q '^A.B$$' >/dev/null 2>&1 || { \
		LC_ALL='$(UTF8_LOCALE)' && export LC_ALL && \
		sharp='#' && \
		! grep -Env $(SAFE_LINE) $(MANS) date.1 $(MANTXTS) \
			$(MISC) $(SOURCES) $(WEB_PAGES) \
			CONTRIBUTING LICENSE README \
			version tzdata.zi && \
		! grep -Env $(SAFE_LINE)'|^UNUSUAL_OK_'$(OK_CHAR)'*$$' \
			Makefile && \
		! grep -Env $(SAFE_SHARP_LINE) $(TDATA_TO_CHECK) backzone \
			leapseconds yearistype.sh zone.tab && \
		! grep -Env $(OK_LINE) $(ENCHILADA); \
	}
	touch $@

check_white_space: $(ENCHILADA)
		patfmt=' \t|[\f\r\v]' && pat=`printf "$$patfmt\\n"` && \
		! grep -En "$$pat" \
			$$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list)
		! grep -n '[[:space:]]$$' \
			$$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list)
		touch $@

PRECEDES_FILE_NAME = ^(Zone|Link[[:space:]]+[^[:space:]]+)[[:space:]]+
FILE_NAME_COMPONENT_TOO_LONG = \
  $(PRECEDES_FILE_NAME)[^[:space:]]*[^/[:space:]]{15}

check_name_lengths: $(TDATA_TO_CHECK) backzone
		! grep -En '$(FILE_NAME_COMPONENT_TOO_LONG)' \
			$(TDATA_TO_CHECK) backzone
		touch $@

CHECK_CC_LIST = { n = split($$1,a,/,/); for (i=2; i<=n; i++) print a[1], a[i]; }

check_sorted: backward backzone iso3166.tab zone.tab zone1970.tab
		$(AWK) '/^Link/ {print $$3}' backward | LC_ALL=C sort -cu
		$(AWK) '/^Zone/ {print $$2}' backzone | LC_ALL=C sort -cu
		touch $@

check_links:	checklinks.awk $(TDATA_TO_CHECK) tzdata.zi
		$(AWK) -f checklinks.awk $(TDATA_TO_CHECK)
		$(AWK) -f checklinks.awk tzdata.zi
		touch $@

check_tables:	checktab.awk $(PRIMARY_YDATA) $(ZONETABLES)
		for tab in $(ZONETABLES); do \
		  $(AWK) -f checktab.awk -v zone_table=$$tab $(PRIMARY_YDATA) \
		    || exit; \
		done
		touch $@

check_tzs:	$(TZS) $(TZS_NEW)
		if test -s $(TZS); then \
		  diff -u $(TZS) $(TZS_NEW); \
		else \
		  cp $(TZS_NEW) $(TZS); \
		fi
		touch $@

check_web:	$(CHECK_WEB_PAGES)
check_theory.html: theory.html
check_tz-art.html: tz-art.html
check_tz-link.html: tz-link.html
check_theory.html check_tz-art.html check_tz-link.html:
		$(CURL) -sS --url https://validator.w3.org/nu/ -F out=gnu \
		    -F file=@$$(expr $@ : 'check_\(.*\)') -o $@.out && \
		  test ! -s $@.out || { cat $@.out; exit 1; }
		mv $@.out $@
check_tz-how-to.html: tz-how-to.html
		$(VALIDATE_ENV) $(VALIDATE) $(VALIDATE_FLAGS) tz-how-to.html
		touch $@

# Check that zishrink.awk does not alter the data, and that ziguard.awk
# preserves main-format data.
check_zishrink: check_zishrink_posix check_zishrink_right
check_zishrink_posix check_zishrink_right: \
  zic leapseconds $(PACKRATDATA) $(TDATA) $(DATAFORM).zi tzdata.zi
		rm -fr $@.dir $@-t.dir $@-shrunk.dir
		mkdir $@.dir $@-t.dir $@-shrunk.dir
		case $@ in \
		  *_right) leap='-L leapseconds';; \
		  *) leap=;; \
		esac && \
		  $(ZIC) $$leap -d $@.dir $(DATAFORM).zi && \
		  $(ZIC) $$leap -d $@-shrunk.dir tzdata.zi && \
		  case $(DATAFORM) in \
		    main) \
		      $(ZIC) $$leap -d $@-t.dir $(TDATA) && \
		      $(AWK) '/^Rule/' $(TDATA) | \
			$(ZIC) $$leap -d $@-t.dir - $(PACKRATDATA) && \
		      diff -r $@.dir $@-t.dir;; \
		  esac
		diff -r $@.dir $@-shrunk.dir
		rm -fr $@.dir $@-t.dir $@-shrunk.dir
		touch $@

clean_misc:
		rm -fr check_*.dir
		rm -f *.o *.out $(TIME_T_ALTERNATIVES) \
		  check_* core typecheck_* \
		  date tzselect version.h zdump zic yearistype libtz.a
clean:		clean_misc
		rm -fr *.dir tzdb-*/
		rm -f *.zi $(TZS_NEW)

maintainer-clean: clean
		@echo 'This command is intended for maintainers to use; it'
		@echo 'deletes files that may need special tools to rebuild.'
		rm -f leapseconds version $(MANTXTS) $(TZS) *.asc *.tar.*

names:
		@echo $(ENCHILADA)

public:		check check_public $(CHECK_TIME_T_ALTERNATIVES) \
		tarballs signatures

date.1.txt:	date.1
newctime.3.txt:	newctime.3
newstrftime.3.txt: newstrftime.3
newtzset.3.txt:	newtzset.3
time2posix.3.txt: time2posix.3
tzfile.5.txt:	tzfile.5
tzselect.8.txt:	tzselect.8
zdump.8.txt:	zdump.8
zic.8.txt:	zic.8

$(MANTXTS):	workman.sh
		LC_ALL=C sh workman.sh `expr $@ : '\(.*\)\.txt$$'` >$@.out
		mv $@.out $@

# Set the timestamps to those of the git repository, if available,
# and if the files have not changed since then.
# This uses GNU 'touch' syntax 'touch -d@N FILE',
# where N is the number of seconds since 1970.
# If git or GNU 'touch' is absent, don't bother to sync with git timestamps.
# Also, set the timestamp of each prebuilt file like 'leapseconds'
# to be the maximum of the files it depends on.
set-timestamps.out: $(EIGHT_YARDS)
		rm -f $@
		if (type git) >/dev/null 2>&1 && \
		   files=`git ls-files $(EIGHT_YARDS)` && \
		   touch -md @1 test.out; then \
		  rm -f test.out && \
		  for file in $$files; do \
		    if git diff --quiet $$file; then \
		      time=`git log -1 --format='tformat:%ct' $$file` && \
		      touch -cmd @$$time $$file; \
		    else \
		      echo >&2 "$$file: warning: does not match repository"; \
		    fi || exit; \
		  done; \
		fi
		touch -cmr `ls -t $(LEAP_DEPS) | sed 1q` leapseconds
		for file in `ls $(MANTXTS) | sed 's/\.txt$$//'`; do \
		  touch -cmr `ls -t $$file workman.sh | sed 1q` $$file.txt || \
		    exit; \
		done
		touch -cmr `ls -t $(TZDATA_ZI_DEPS) | sed 1q` tzdata.zi
		touch -cmr `ls -t $(VERSION_DEPS) | sed 1q` version
		touch $@
set-tzs-timestamp.out: $(TZS)
		touch -cmr `ls -t $(TZS_DEPS) | sed 1q` $(TZS)
		touch $@

# The zics below ensure that each data file can stand on its own.
# We also do an all-files run to catch links to links.

check_public: $(VERSION_DEPS)
		rm -fr public.dir
		mkdir public.dir
		ln $(VERSION_DEPS) public.dir
		cd public.dir && $(MAKE) CFLAGS='$(GCC_DEBUG_FLAGS)' ALL
		for i in $(TDATA_TO_CHECK) public.dir/tzdata.zi; do \
		  public.dir/zic -v -d public.dir/zoneinfo $$i 2>&1 || exit; \
		done
		public.dir/zic -v -d public.dir/zoneinfo-all $(TDATA_TO_CHECK)
		rm -fr public.dir
		touch $@

# Check that the code works under various alternative
# implementations of time_t.
check_time_t_alternatives: $(TIME_T_ALTERNATIVES)
$(TIME_T_ALTERNATIVES_TAIL): $(TIME_T_ALTERNATIVES_HEAD)
$(TIME_T_ALTERNATIVES): $(VERSION_DEPS)
		rm -fr $@.dir
		mkdir $@.dir
		ln $(VERSION_DEPS) $@.dir
		case $@ in \
		  int32_t) range=-2147483648,2147483648;; \
		  u*) range=0,4294967296;; \
		  *) range=-4294967296,4294967296;; \
		esac && \
		wd=`pwd` && \
		zones=`$(AWK) '/^[^#]/ { print $$3 }' <zone1970.tab` && \
		if test $@ = $(TIME_T_ALTERNATIVES_HEAD); then \
		  range_target=; \
		else \
		  range_target=to$$range.tzs; \
		fi && \
		(cd $@.dir && \
		  $(MAKE) TOPDIR="$$wd/$@.dir" \
		    CFLAGS='$(CFLAGS) -Dtime_tz='"'$@'" \
		    REDO='$(REDO)' \
			D=$$wd/$@.dir \
		    TZS_YEAR="$$range" TZS_CUTOFF_FLAG="-t $$range" \
		    install $$range_target) && \
		test $@ = $(TIME_T_ALTERNATIVES_HEAD) || { \
		  (cd $(TIME_T_ALTERNATIVES_HEAD).dir && \
		    $(MAKE) TOPDIR="$$wd/$@.dir" \
		      TZS_YEAR="$$range" TZS_CUTOFF_FLAG="-t $$range" \
			D=$$wd/$@.dir \
		      to$$range.tzs) && \
		  diff -u $(TIME_T_ALTERNATIVES_HEAD).dir/to$$range.tzs \
			  $@.dir/to$$range.tzs && \
		  if diff -q Makefile Makefile 2>/dev/null; then \
		    quiet_option='-q'; \
		  else \
		    quiet_option=''; \
		  fi && \
		    diff $$quiet_option -r $(TIME_T_ALTERNATIVES_HEAD).dir/etc \
					   $@.dir/etc && \
		    diff $$quiet_option -r \
		      $(TIME_T_ALTERNATIVES_HEAD).dir/usr/share \
		      $@.dir/usr/share; \
		}
		touch $@

TRADITIONAL_ASC = \
  tzcode$(VERSION).tar.gz.asc \
  tzdata$(VERSION).tar.gz.asc
REARGUARD_ASC = \
  tzdata$(VERSION)-rearguard.tar.gz.asc
ALL_ASC = $(TRADITIONAL_ASC) $(REARGUARD_ASC) \
  tzdb-$(VERSION).tar.lz.asc

tarballs rearguard_tarballs traditional_tarballs \
signatures rearguard_signatures traditional_signatures: \
  version set-timestamps.out rearguard.zi
		VERSION=`cat version` && \
		$(MAKE) VERSION="$$VERSION" $@_version

# These *_version rules are intended for use if VERSION is set by some
# other means.  Ordinarily these rules are used only by the above
# non-_version rules, which set VERSION on the 'make' command line.
tarballs_version: traditional_tarballs_version rearguard_tarballs_version \
  tzdb-$(VERSION).tar.lz
rearguard_tarballs_version: \
  tzdata$(VERSION)-rearguard.tar.gz
traditional_tarballs_version: \
  tzcode$(VERSION).tar.gz tzdata$(VERSION).tar.gz
signatures_version: $(ALL_ASC)
rearguard_signatures_version: $(REARGUARD_ASC)
traditional_signatures_version: $(TRADITIONAL_ASC)

tzcode$(VERSION).tar.gz: set-timestamps.out
		LC_ALL=C && export LC_ALL && \
		tar $(TARFLAGS) -cf - \
		    $(COMMON) $(DOCS) $(SOURCES) | \
		  gzip $(GZIPFLAGS) >$@.out
		mv $@.out $@

tzdata$(VERSION).tar.gz: set-timestamps.out
		LC_ALL=C && export LC_ALL && \
		tar $(TARFLAGS) -cf - $(COMMON) $(DATA) $(MISC) | \
		  gzip $(GZIPFLAGS) >$@.out
		mv $@.out $@

tzdata$(VERSION)-rearguard.tar.gz: rearguard.zi set-timestamps.out
		rm -fr tzdata$(VERSION)-rearguard.dir
		mkdir tzdata$(VERSION)-rearguard.dir
		ln $(COMMON) $(DATA) $(MISC) tzdata$(VERSION)-rearguard.dir
		cd tzdata$(VERSION)-rearguard.dir && \
		  rm -f $(TDATA) $(PACKRATDATA) version
		for f in $(TDATA) $(PACKRATDATA); do \
		  rearf=tzdata$(VERSION)-rearguard.dir/$$f; \
		  $(AWK) -v DATAFORM=rearguard -f ziguard.awk $$f >$$rearf && \
		  touch -cmr `ls -t ziguard.awk $$f` $$rearf || exit; \
		done
		sed '1s/$$/-rearguard/' \
		  <version >tzdata$(VERSION)-rearguard.dir/version
		touch -cmr version tzdata$(VERSION)-rearguard.dir/version
		LC_ALL=C && export LC_ALL && \
		  (cd tzdata$(VERSION)-rearguard.dir && \
		   tar $(TARFLAGS) -cf - $(COMMON) $(DATA) $(MISC) | \
		     gzip $(GZIPFLAGS)) >$@.out
		mv $@.out $@

tzdb-$(VERSION).tar.lz: set-timestamps.out set-tzs-timestamp.out
		rm -fr tzdb-$(VERSION)
		mkdir tzdb-$(VERSION)
		ln $(ENCHILADA) tzdb-$(VERSION)
		touch -cmr `ls -t tzdb-$(VERSION)/* | sed 1q` tzdb-$(VERSION)
		LC_ALL=C && export LC_ALL && \
		tar $(TARFLAGS) -cf - tzdb-$(VERSION) | lzip -9 >$@.out
		mv $@.out $@

tzcode$(VERSION).tar.gz.asc: tzcode$(VERSION).tar.gz
tzdata$(VERSION).tar.gz.asc: tzdata$(VERSION).tar.gz
tzdata$(VERSION)-rearguard.tar.gz.asc: tzdata$(VERSION)-rearguard.tar.gz
tzdb-$(VERSION).tar.lz.asc: tzdb-$(VERSION).tar.lz
$(ALL_ASC):
		$(GPG) --armor --detach-sign $?

TYPECHECK_CFLAGS = $(CFLAGS) -DTYPECHECK -D__time_t_defined -D_TIME_T
typecheck: typecheck_long_long typecheck_unsigned
typecheck_long_long typecheck_unsigned: $(VERSION_DEPS)
		rm -fr $@.dir
		mkdir $@.dir
		ln $(VERSION_DEPS) $@.dir
		cd $@.dir && \
		  case $@ in \
		    *_long_long) i="long long";; \
		    *_unsigned ) i="unsigned" ;; \
		  esac && \
		  typecheck_cflags='' && \
		  $(MAKE) \
		    CFLAGS="$(TYPECHECK_CFLAGS) \"-Dtime_t=$$i\"" \
		    TOPDIR="`pwd`" \
		    install
		$@.dir/zdump -i -c 1970,1971 Europe/Rome
		touch $@

zonenames:	tzdata.zi
		@$(AWK) '/^Z/ { print $$2 } /^L/ { print $$3 }' tzdata.zi

asctime.o:	private.h tzfile.h
date.o:		private.h
difftime.o:	private.h
localtime.o:	private.h tzfile.h
strftime.o:	private.h tzfile.h
zdump.o:	version.h
zic.o:		private.h tzfile.h version.h

.KEEP_STATE:

.PHONY: ALL INSTALL all
.PHONY: check check_time_t_alternatives
.PHONY: check_web check_zishrink
.PHONY: clean clean_misc dummy.zd force_tzs
.PHONY: install install_data maintainer-clean names
.PHONY: posix_only posix_packrat posix_right public
.PHONY: rearguard_signatures rearguard_signatures_version
.PHONY: rearguard_tarballs rearguard_tarballs_version
.PHONY: right_only right_posix signatures signatures_version
.PHONY: tarballs tarballs_version
.PHONY: traditional_signatures traditional_signatures_version
.PHONY: traditional_tarballs traditional_tarballs_version
.PHONY: typecheck
.PHONY: zonenames zones
.PHONY: $(ZDS)