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Makefile revision 1.53
      1 # Make and install tzdb code and data.
      2 
      3 # This file is in the public domain, so clarified as of
      4 # 2009-05-17 by Arthur David Olson.
      5 
      6 # Package name for the code distribution.
      7 PACKAGE=	tzcode
      8 
      9 # Version number for the distribution, overridden in the 'tarballs' rule below.
     10 VERSION=	unknown
     11 
     12 # Email address for bug reports.
     13 BUGEMAIL=	tz@iana.org
     14 
     15 # DATAFORM selects the data format.
     16 # Available formats represent essentially the same data, albeit
     17 # possibly with minor discrepancies that users are not likely to notice.
     18 # To get new features and the best data right away, use:
     19 #	DATAFORM=	vanguard
     20 # To wait a while before using new features, to give downstream users
     21 # time to upgrade zic (the default), use:
     22 #	DATAFORM=	main
     23 # To wait even longer for new features, use:
     24 #	DATAFORM=	rearguard
     25 # Rearguard users might also want "ZFLAGS = -b fat"; see below.
     26 DATAFORM=		main
     27 
     28 # Change the line below for your timezone (after finding the one you want in
     29 # one of the $(TDATA) source files, or adding it to a source file).
     30 # Alternatively, if you discover you've got the wrong timezone, you can just
     31 # 'zic -l -' to remove it, or 'zic -l rightzone' to change it.
     32 # Use the command
     33 #	make zonenames
     34 # to get a list of the values you can use for LOCALTIME.
     35 
     36 LOCALTIME=	Factory
     37 
     38 # The POSIXRULES macro controls interpretation of nonstandard and obsolete
     39 # POSIX-like TZ settings like TZ='EET-2EEST' that lack DST transition rules.
     40 # Such a setting uses the rules in a template file to determine
     41 # "spring forward" and "fall back" days and times; the environment
     42 # variable itself specifies UT offsets of standard and daylight saving time.
     43 #
     44 # If POSIXRULES is '-', no template is installed; this is the default.
     45 #
     46 # Any other value for POSIXRULES is obsolete and should not be relied on, as:
     47 # * It does not work correctly in popular implementations such as GNU/Linux.
     48 # * It does not work even in tzcode, except for historical timestamps
     49 #   that precede the last explicit transition in the POSIXRULES file.
     50 #   Hence it typically does not work for current and future timestamps.
     51 # In short, software should avoid ruleless settings like TZ='EET-2EEST'
     52 # and so should not depend on the value of POSIXRULES.
     53 #
     54 # If, despite the above, you want a template for handling these settings,
     55 # you can change the line below (after finding the timezone you want in the
     56 # one of the $(TDATA) source files, or adding it to a source file).
     57 # Alternatively, if you discover you've got the wrong timezone, you can just
     58 # 'zic -p -' to remove it, or 'zic -p rightzone' to change it.
     59 # Use the command
     60 #	make zonenames
     61 # to get a list of the values you can use for POSIXRULES.
     62 
     63 POSIXRULES=	-
     64 
     65 # Also see TZDEFRULESTRING below, which takes effect only
     66 # if the time zone files cannot be accessed.
     67 
     68 
     69 # Installation locations.
     70 #
     71 # The defaults are suitable for Debian, except that if REDO is
     72 # posix_right or right_posix then files that Debian puts under
     73 # /usr/share/zoneinfo/posix and /usr/share/zoneinfo/right are instead
     74 # put under /usr/share/zoneinfo-posix and /usr/share/zoneinfo-leaps,
     75 # respectively.  Problems with the Debian approach are discussed in
     76 # the commentary for the right_posix rule (below).
     77 
     78 # Destination directory, which can be used for staging.
     79 # 'make DESTDIR=/stage install' installs under /stage (e.g., to
     80 # /stage/etc/localtime instead of to /etc/localtime).  Files under
     81 # /stage are not intended to work as-is, but can be copied by hand to
     82 # the root directory later.  If DESTDIR is empty, 'make install' does
     83 # not stage, but installs directly into production locations.
     84 DESTDIR =
     85 
     86 # Everything is installed into subdirectories of TOPDIR, and used there.
     87 # TOPDIR should be empty (meaning the root directory),
     88 # or a directory name that does not end in "/".
     89 # TOPDIR should be empty or an absolute name unless you're just testing.
     90 TOPDIR =
     91 
     92 # The default local timezone is taken from the file TZDEFAULT.
     93 TZDEFAULT = $(TOPDIR)/etc/localtime
     94 
     95 # The subdirectory containing installed program and data files, and
     96 # likewise for installed files that can be shared among architectures.
     97 # These should be relative file names.
     98 USRDIR = usr
     99 USRSHAREDIR = $(USRDIR)/share
    100 
    101 # "Compiled" timezone information is placed in the "TZDIR" directory
    102 # (and subdirectories).
    103 # TZDIR_BASENAME should not contain "/" and should not be ".", ".." or empty.
    104 TZDIR_BASENAME=	zoneinfo
    105 TZDIR = $(TOPDIR)/$(USRSHAREDIR)/$(TZDIR_BASENAME)
    106 
    107 # The "tzselect" and (if you do "make INSTALL") "date" commands go in:
    108 BINDIR = $(TOPDIR)/$(USRDIR)/bin
    109 
    110 # The "zdump" command goes in:
    111 ZDUMPDIR = $(BINDIR)
    112 
    113 # The "zic" command goes in:
    114 ZICDIR = $(TOPDIR)/$(USRDIR)/sbin
    115 
    116 # Manual pages go in subdirectories of. . .
    117 MANDIR = $(TOPDIR)/$(USRSHAREDIR)/man
    118 
    119 # Library functions are put in an archive in LIBDIR.
    120 LIBDIR = $(TOPDIR)/$(USRDIR)/lib
    121 
    122 
    123 # Types to try, as an alternative to time_t.
    124 TIME_T_ALTERNATIVES = $(TIME_T_ALTERNATIVES_HEAD) $(TIME_T_ALTERNATIVES_TAIL)
    125 TIME_T_ALTERNATIVES_HEAD = int_least64_t
    126 TIME_T_ALTERNATIVES_TAIL = int_least32_t uint_least32_t uint_least64_t
    127 
    128 # What kind of TZif data files to generate.  (TZif is the binary time
    129 # zone data format that zic generates; see Internet RFC 8536.)
    130 # If you want only POSIX time, with time values interpreted as
    131 # seconds since the epoch (not counting leap seconds), use
    132 #	REDO=		posix_only
    133 # below.  If you want only "right" time, with values interpreted
    134 # as seconds since the epoch (counting leap seconds), use
    135 #	REDO=		right_only
    136 # below.  If you want both sets of data available, with leap seconds not
    137 # counted normally, use
    138 #	REDO=		posix_right
    139 # below.  If you want both sets of data available, with leap seconds counted
    140 # normally, use
    141 #	REDO=		right_posix
    142 # below.  POSIX mandates that leap seconds not be counted; for compatibility
    143 # with it, use "posix_only" or "posix_right".  Use POSIX time on systems with
    144 # leap smearing; this can work better than unsmeared "right" time with
    145 # applications that are not leap second aware, and is closer to unsmeared
    146 # "right" time than unsmeared POSIX time is (e.g., 0.5 vs 1.0 s max error).
    147 
    148 REDO=		posix_right
    149 
    150 # Whether to put an "Expires" line in the leapseconds file.
    151 # Use EXPIRES_LINE=1 to put the line in, 0 to omit it.
    152 # The EXPIRES_LINE value matters only if REDO's value contains "right".
    153 # If you change EXPIRES_LINE, remove the leapseconds file before running "make".
    154 # zic's support for the Expires line was introduced in tzdb 2020a,
    155 # and was modified in tzdb 2021b to generate version 4 TZif files.
    156 # EXPIRES_LINE defaults to 0 for now so that the leapseconds file
    157 # can be given to pre-2020a zic implementations and so that TZif files
    158 # built by newer zic implementations can be read by pre-2021b libraries.
    159 EXPIRES_LINE=	0
    160 
    161 # To install data in text form that has all the information of the TZif data,
    162 # (optionally incorporating leap second information), use
    163 #	TZDATA_TEXT=	tzdata.zi leapseconds
    164 # To install text data without leap second information (e.g., because
    165 # REDO='posix_only'), use
    166 #	TZDATA_TEXT=	tzdata.zi
    167 # To avoid installing text data, use
    168 #	TZDATA_TEXT=
    169 
    170 TZDATA_TEXT=	leapseconds tzdata.zi
    171 
    172 # For backward-compatibility links for old zone names, use
    173 #	BACKWARD=	backward
    174 # To omit these links, use
    175 #	BACKWARD=
    176 
    177 BACKWARD=	backward
    178 
    179 # If you want out-of-scope and often-wrong data from the file 'backzone',
    180 # but only for entries listed in the backward-compatibility file zone.tab, use
    181 #	PACKRATDATA=	backzone
    182 #	PACKRATLIST=	zone.tab
    183 # If you want all the 'backzone' data, use
    184 #	PACKRATDATA=	backzone
    185 #	PACKRATLIST=
    186 # To omit this data, use
    187 #	PACKRATDATA=
    188 #	PACKRATLIST=
    189 
    190 PACKRATDATA=
    191 PACKRATLIST=
    192 
    193 # The name of a locale using the UTF-8 encoding, used during self-tests.
    194 # The tests are skipped if the name does not appear to work on this system.
    195 
    196 UTF8_LOCALE=	en_US.utf8
    197 
    198 # Non-default libraries needed to link.
    199 LDLIBS=
    200 
    201 # Add the following to the end of the "CFLAGS=" line as needed to override
    202 # defaults specified in the source code.  "-DFOO" is equivalent to "-DFOO=1".
    203 #  -DDEPRECATE_TWO_DIGIT_YEARS for optional runtime warnings about strftime
    204 #	formats that generate only the last two digits of year numbers
    205 #  -DEPOCH_LOCAL if the 'time' function returns local time not UT
    206 #  -DEPOCH_OFFSET=N if the 'time' function returns a value N greater
    207 #	than what POSIX specifies, assuming local time is UT.
    208 #	For example, N is 252460800 on AmigaOS.
    209 #  -DHAVE_DECL_ASCTIME_R=0 if <time.h> does not declare asctime_r
    210 #  -DHAVE_DECL_ENVIRON if <unistd.h> declares 'environ'
    211 #  -DHAVE_DIRECT_H if mkdir needs <direct.h> (MS-Windows)
    212 #  -DHAVE_GENERIC=0 if _Generic does not work
    213 #  -DHAVE_GETRANDOM if getgrandom works (e.g., GNU/Linux)*
    214 #  -DHAVE_GETTEXT if 'gettext' works (e.g., GNU/Linux, FreeBSD, Solaris)*
    215 #  -DHAVE_INCOMPATIBLE_CTIME_R if your system's time.h declares
    216 #	ctime_r and asctime_r incompatibly with the POSIX standard
    217 #	(Solaris when _POSIX_PTHREAD_SEMANTICS is not defined).
    218 #  -DHAVE_INTTYPES_H if you have a non-C99 compiler with <inttypes.h>
    219 #  -DHAVE_LINK=0 if your system lacks a link function
    220 #  -DHAVE_LOCALTIME_R=0 if your system lacks a localtime_r function
    221 #  -DHAVE_LOCALTIME_RZ=0 if you do not want zdump to use localtime_rz
    222 #	localtime_rz can make zdump significantly faster, but is nonstandard.
    223 #  -DHAVE_MALLOC_ERRNO=0 if malloc etc. do not set errno on failure.
    224 #  -DHAVE_POSIX_DECLS=0 if your system's include files do not declare
    225 #	functions like 'link' or variables like 'tzname' required by POSIX
    226 #  -DHAVE_SETENV=0 if your system lacks the setenv function
    227 #  -DHAVE_SNPRINTF=0 if your system lacks the snprintf function
    228 #  -DHAVE_STDINT_H if you have a non-C99 compiler with <stdint.h>*
    229 #  -DHAVE_STRFTIME_L if <time.h> declares locale_t and strftime_l
    230 #  -DHAVE_STRDUP=0 if your system lacks the strdup function
    231 #  -DHAVE_STRTOLL=0 if your system lacks the strtoll function
    232 #  -DHAVE_SYMLINK=0 if your system lacks the symlink function
    233 #  -DHAVE_SYS_STAT_H=0 if your compiler lacks a <sys/stat.h>*
    234 #  -DHAVE_TZSET=0 if your system lacks a tzset function
    235 #  -DHAVE_UNISTD_H=0 if your compiler lacks a <unistd.h>*
    236 #  -DHAVE_UTMPX_H=0 if your compiler lacks a <utmpx.h>*
    237 #  -Dlocale_t=XXX if your system uses XXX instead of locale_t
    238 #  -DRESERVE_STD_EXT_IDS if your platform reserves standard identifiers
    239 #	with external linkage, e.g., applications cannot define 'localtime'.
    240 #  -Dssize_t=long on hosts like MS-Windows that lack ssize_t
    241 #  -DSUPPRESS_TZDIR to not prepend TZDIR to file names; this has
    242 #	security implications and is not recommended for general use
    243 #  -DTHREAD_SAFE to make localtime.c thread-safe, as POSIX requires;
    244 #	not needed by the main-program tz code, which is single-threaded.
    245 #	Append other compiler flags as needed, e.g., -pthread on GNU/Linux.
    246 #  -Dtime_tz=\"T\" to use T as the time_t type, rather than the system time_t
    247 #	This is intended for internal use only; it mangles external names.
    248 #  -DTZ_DOMAIN=\"foo\" to use "foo" for gettext domain name; default is "tz"
    249 #  -DTZ_DOMAINDIR=\"/path\" to use "/path" for gettext directory;
    250 #	the default is system-supplied, typically "/usr/lib/locale"
    251 #  -DTZDEFRULESTRING=\",date/time,date/time\" to default to the specified
    252 #	DST transitions if the time zone files cannot be accessed
    253 #  -DUNINIT_TRAP if reading uninitialized storage can cause problems
    254 #	other than simply getting garbage data
    255 #  -DUSE_LTZ=0 to build zdump with the system time zone library
    256 #	Also set TZDOBJS=zdump.o and CHECK_TIME_T_ALTERNATIVES= below.
    257 #  -DZIC_BLOAT_DEFAULT=\"fat\" to default zic's -b option to "fat", and
    258 #	similarly for "slim".  Fat TZif files work around incompatibilities
    259 #	and bugs in some TZif readers, notably older ones that
    260 #	ignore or otherwise mishandle 64-bit data in TZif files;
    261 #	however, fat TZif files may trigger bugs in newer TZif readers.
    262 #	Slim TZif files are more efficient, and are the default.
    263 #  -DZIC_MAX_ABBR_LEN_WO_WARN=3
    264 #	(or some other number) to set the maximum time zone abbreviation length
    265 #	that zic will accept without a warning (the default is 6)
    266 #  $(GCC_DEBUG_FLAGS) if you are using recent GCC and want lots of checking
    267 #
    268 # * Options marked "*" can be omitted if your compiler is C23 compatible.
    269 #
    270 # Select instrumentation via "make GCC_INSTRUMENT='whatever'".
    271 GCC_INSTRUMENT = \
    272   -fsanitize=undefined -fsanitize-address-use-after-scope \
    273   -fsanitize-undefined-trap-on-error -fstack-protector
    274 # Omit -fanalyzer from GCC_DEBUG_FLAGS, as it makes GCC too slow.
    275 GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \
    276   $(GCC_INSTRUMENT) \
    277   -Wall -Wextra \
    278   -Walloc-size-larger-than=100000 -Warray-bounds=2 \
    279   -Wbad-function-cast -Wbidi-chars=any,ucn -Wcast-align=strict -Wdate-time \
    280   -Wdeclaration-after-statement -Wdouble-promotion \
    281   -Wduplicated-branches -Wduplicated-cond \
    282   -Wformat=2 -Wformat-overflow=2 -Wformat-signedness -Wformat-truncation \
    283   -Winit-self -Wlogical-op \
    284   -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
    285   -Wnull-dereference \
    286   -Wold-style-definition -Woverlength-strings -Wpointer-arith \
    287   -Wshadow -Wshift-overflow=2 -Wstrict-overflow \
    288   -Wstrict-prototypes -Wstringop-overflow=4 \
    289   -Wstringop-truncation -Wsuggest-attribute=cold \
    290   -Wsuggest-attribute=const -Wsuggest-attribute=format \
    291   -Wsuggest-attribute=malloc \
    292   -Wsuggest-attribute=noreturn -Wsuggest-attribute=pure \
    293   -Wtrampolines -Wundef -Wuninitialized -Wunused-macros -Wuse-after-free=3 \
    294   -Wvariadic-macros -Wvla -Wwrite-strings \
    295   -Wno-address -Wno-format-nonliteral -Wno-sign-compare \
    296   -Wno-type-limits -Wno-unused-parameter
    297 #
    298 # If your system has a "GMT offset" field in its "struct tm"s
    299 # (or if you decide to add such a field in your system's "time.h" file),
    300 # add the name to a define such as
    301 #	-DTM_GMTOFF=tm_gmtoff
    302 # to the end of the "CFLAGS=" line.  If not defined, the code attempts to
    303 # guess TM_GMTOFF from other macros; define NO_TM_GMTOFF to suppress this.
    304 # Similarly, if your system has a "zone abbreviation" field, define
    305 #	-DTM_ZONE=tm_zone
    306 # and define NO_TM_ZONE to suppress any guessing.  Although these two fields
    307 # not required by POSIX, a future version of POSIX is planned to require them
    308 # and they are widely available on GNU/Linux and BSD systems.
    309 #
    310 # The next batch of options control support for external variables
    311 # exported by tzcode.  In practice these variables are less useful
    312 # than TM_GMTOFF and TM_ZONE.  However, most of them are standardized.
    313 # #
    314 # # To omit or support the external variable "tzname", add one of:
    315 # #	-DHAVE_TZNAME=0 # do not support "tzname"
    316 # #	-DHAVE_TZNAME=1 # support "tzname", which is defined by system library
    317 # #	-DHAVE_TZNAME=2 # support and define "tzname"
    318 # # to the "CFLAGS=" line.  "tzname" is required by POSIX 1988 and later.
    319 # # If not defined, the code attempts to guess HAVE_TZNAME from other macros.
    320 # # Warning: unless time_tz is also defined, HAVE_TZNAME=1 can cause
    321 # # crashes when combined with some platforms' standard libraries,
    322 # # presumably due to memory allocation issues.
    323 # #
    324 # # To omit or support the external variables "timezone" and "daylight", add
    325 # #	-DUSG_COMPAT=0 # do not support
    326 # #	-DUSG_COMPAT=1 # support, and variables are defined by system library
    327 # #	-DUSG_COMPAT=2 # support and define variables
    328 # # to the "CFLAGS=" line; "timezone" and "daylight" are inspired by
    329 # # Unix Systems Group code and are required by POSIX 2008 (with XSI) and later.
    330 # # If not defined, the code attempts to guess USG_COMPAT from other macros.
    331 # #
    332 # # To support the external variable "altzone", add
    333 # #	-DALTZONE=0 # do not support
    334 # #	-DALTZONE=1 # support "altzone", which is defined by system library
    335 # #	-DALTZONE=2 # support and define "altzone"
    336 # # to the end of the "CFLAGS=" line; although "altzone" appeared in
    337 # # System V Release 3.1 it has not been standardized.
    338 # # If not defined, the code attempts to guess ALTZONE from other macros.
    339 #
    340 # If you want functions that were inspired by early versions of X3J11's work,
    341 # add
    342 #	-DSTD_INSPIRED
    343 # to the end of the "CFLAGS=" line.  This arranges for the functions
    344 # "offtime", "timelocal", "timegm", "timeoff",
    345 # "posix2time", and "time2posix" to be added to the time conversion library.
    346 # "offtime" is like "gmtime" except that it accepts a second (long) argument
    347 # that gives an offset to add to the time_t when converting it.
    348 # "timelocal" is equivalent to "mktime".
    349 # "timegm" is like "timelocal" except that it turns a struct tm into
    350 # a time_t using UT (rather than local time as "timelocal" does).
    351 # "timeoff" is like "timegm" except that it accepts a second (long) argument
    352 # that gives an offset to use when converting to a time_t.
    353 # "posix2time" and "time2posix" are described in an included manual page.
    354 # X3J11's work does not describe any of these functions.
    355 # These functions may well disappear in future releases of the time
    356 # conversion package.
    357 #
    358 # If you don't want functions that were inspired by NetBSD, add
    359 #	-DNETBSD_INSPIRED=0
    360 # to the end of the "CFLAGS=" line.  Otherwise, the functions
    361 # "localtime_rz", "mktime_z", "tzalloc", and "tzfree" are added to the
    362 # time library, and if STD_INSPIRED is also defined the functions
    363 # "posix2time_z" and "time2posix_z" are added as well.
    364 # The functions ending in "_z" (or "_rz") are like their unsuffixed
    365 # (or suffixed-by-"_r") counterparts, except with an extra first
    366 # argument of opaque type timezone_t that specifies the timezone.
    367 # "tzalloc" allocates a timezone_t value, and "tzfree" frees it.
    368 #
    369 # If you want to allocate state structures in localtime, add
    370 #	-DALL_STATE
    371 # to the end of the "CFLAGS=" line.  Storage is obtained by calling malloc.
    372 #
    373 # NIST-PCTS:151-2, Version 1.4, (1993-12-03) is a test suite put
    374 # out by the National Institute of Standards and Technology
    375 # which claims to test C and Posix conformance.  If you want to pass PCTS, add
    376 #	-DPCTS
    377 # to the end of the "CFLAGS=" line.
    378 #
    379 # If you want strict compliance with XPG4 as of 1994-04-09, add
    380 #	-DXPG4_1994_04_09
    381 # to the end of the "CFLAGS=" line.  This causes "strftime" to always return
    382 # 53 as a week number (rather than 52 or 53) for January days before
    383 # January's first Monday when a "%V" format is used and January 1
    384 # falls on a Friday, Saturday, or Sunday.
    385 
    386 CFLAGS=
    387 
    388 # Linker flags.  Default to $(LFLAGS) for backwards compatibility
    389 # to release 2012h and earlier.
    390 
    391 LDFLAGS=	$(LFLAGS)
    392 
    393 # For leap seconds, this Makefile uses LEAPSECONDS='-L leapseconds' in
    394 # submake command lines.  The default is no leap seconds.
    395 
    396 LEAPSECONDS=
    397 
    398 # The zic command and its arguments.
    399 
    400 zic=		./zic
    401 ZIC=		$(zic) $(ZFLAGS)
    402 
    403 # To shrink the size of installed TZif files,
    404 # append "-r @N" to omit data before N-seconds-after-the-Epoch.
    405 # To grow the files and work around bugs in older applications,
    406 # possibly at the expense of introducing bugs in newer ones,
    407 # append "-b fat"; see ZIC_BLOAT_DEFAULT above.
    408 # See the zic man page for more about -b and -r.
    409 ZFLAGS=
    410 
    411 # How to use zic to install TZif files.
    412 
    413 ZIC_INSTALL=	$(ZIC) -d '$(DESTDIR)$(TZDIR)' $(LEAPSECONDS)
    414 
    415 # The name of a Posix-compliant 'awk' on your system.
    416 # mawk 1.3.3 and Solaris 10 /usr/bin/awk do not work.
    417 # Also, it is better (though not essential) if 'awk' supports UTF-8,
    418 # and unfortunately mawk and busybox awk do not support UTF-8.
    419 # Try AWK=gawk or AWK=nawk if your awk has the abovementioned problems.
    420 AWK=		awk
    421 
    422 # The full path name of a Posix-compliant shell, preferably one that supports
    423 # the Korn shell's 'select' statement as an extension.
    424 # These days, Bash is the most popular.
    425 # It should be OK to set this to /bin/sh, on platforms where /bin/sh
    426 # lacks 'select' or doesn't completely conform to Posix, but /bin/bash
    427 # is typically nicer if it works.
    428 KSHELL=		/bin/bash
    429 
    430 # Name of curl <https://curl.haxx.se/>, used for HTML validation.
    431 CURL=		curl
    432 
    433 # Name of GNU Privacy Guard <https://gnupg.org/>, used to sign distributions.
    434 GPG=		gpg
    435 
    436 # This expensive test requires USE_LTZ.
    437 # To suppress it, define this macro to be empty.
    438 CHECK_TIME_T_ALTERNATIVES = check_time_t_alternatives
    439 
    440 # SAFE_CHAR is a regular expression that matches a safe character.
    441 # Some parts of this distribution are limited to safe characters;
    442 # others can use any UTF-8 character.
    443 # For now, the safe characters are a safe subset of ASCII.
    444 # The caller must set the shell variable 'sharp' to the character '#',
    445 # since Makefile macros cannot contain '#'.
    446 # TAB_CHAR is a single tab character, in single quotes.
    447 TAB_CHAR=	'	'
    448 SAFE_CHARSET1=	$(TAB_CHAR)' !\"'$$sharp'$$%&'\''()*+,./0123456789:;<=>?@'
    449 SAFE_CHARSET2=	'ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\^_`'
    450 SAFE_CHARSET3=	'abcdefghijklmnopqrstuvwxyz{|}~'
    451 SAFE_CHARSET=	$(SAFE_CHARSET1)$(SAFE_CHARSET2)$(SAFE_CHARSET3)
    452 SAFE_CHAR=	'[]'$(SAFE_CHARSET)'-]'
    453 
    454 # These characters are Latin-1, and so are likely to be displayable
    455 # even in editors with limited character sets.
    456 UNUSUAL_OK_LATIN_1 = 
    457 # This IPA symbol is represented in Unicode as the composition of
    458 # U+0075 and U+032F, and U+032F is not considered alphabetic by some
    459 # grep implementations that do not grok composition.
    460 UNUSUAL_OK_IPA = u
    461 # Non-ASCII non-letters that OK_CHAR allows, as these characters are
    462 # useful in commentary.
    463 UNUSUAL_OK_CHARSET= $(UNUSUAL_OK_LATIN_1)$(UNUSUAL_OK_IPA)
    464 
    465 # Put this in a bracket expression to match spaces.
    466 s = [:space:]
    467 
    468 # OK_CHAR matches any character allowed in the distributed files.
    469 # This is the same as SAFE_CHAR, except that UNUSUAL_OK_CHARSET and
    470 # multibyte letters are also allowed so that commentary can contain a
    471 # few safe symbols and people's names and can quote non-English sources.
    472 # Other non-letters are limited to ASCII renderings for the
    473 # convenience of maintainers using XEmacs 21.5.34, which by default
    474 # mishandles Unicode characters U+0100 and greater.
    475 OK_CHAR=	'[][:alpha:]$(UNUSUAL_OK_CHARSET)'$(SAFE_CHARSET)'-]'
    476 
    477 # SAFE_LINE matches a line of safe characters.
    478 # SAFE_SHARP_LINE is similar, except any OK character can follow '#';
    479 # this is so that comments can contain non-ASCII characters.
    480 # OK_LINE matches a line of OK characters.
    481 SAFE_LINE=	'^'$(SAFE_CHAR)'*$$'
    482 SAFE_SHARP_LINE='^'$(SAFE_CHAR)'*('$$sharp$(OK_CHAR)'*)?$$'
    483 OK_LINE=	'^'$(OK_CHAR)'*$$'
    484 
    485 # Flags to give 'tar' when making a distribution.
    486 # Try to use flags appropriate for GNU tar.
    487 GNUTARFLAGS= --format=pax --pax-option='delete=atime,delete=ctime' \
    488   --numeric-owner --owner=0 --group=0 \
    489   --mode=go+u,go-w --sort=name
    490 TARFLAGS=	`if tar $(GNUTARFLAGS) --version >/dev/null 2>&1; \
    491 		 then echo $(GNUTARFLAGS); \
    492 		 else :; \
    493 		 fi`
    494 
    495 # Flags to give 'gzip' when making a distribution.
    496 GZIPFLAGS=	-9n
    497 
    498 ###############################################################################
    499 
    500 #MAKE=		make
    501 
    502 cc=		cc
    503 CC=		$(cc) -DTZDIR='"$(TZDIR)"'
    504 
    505 AR=		ar
    506 
    507 # ':' on typical hosts; 'ranlib' on the ancient hosts that still need ranlib.
    508 RANLIB=		:
    509 
    510 TZCOBJS=	zic.o
    511 TZDOBJS=	zdump.o localtime.o asctime.o strftime.o
    512 DATEOBJS=	date.o localtime.o strftime.o asctime.o
    513 LIBSRCS=	localtime.c asctime.c difftime.c strftime.c
    514 LIBOBJS=	localtime.o asctime.o difftime.o strftime.o
    515 HEADERS=	tzfile.h private.h
    516 NONLIBSRCS=	zic.c zdump.c
    517 NEWUCBSRCS=	date.c
    518 SOURCES=	$(HEADERS) $(LIBSRCS) $(NONLIBSRCS) $(NEWUCBSRCS) \
    519 			tzselect.ksh workman.sh
    520 MANS=		newctime.3 newstrftime.3 newtzset.3 time2posix.3 \
    521 			tzfile.5 tzselect.8 zic.8 zdump.8
    522 MANTXTS=	newctime.3.txt newstrftime.3.txt newtzset.3.txt \
    523 			time2posix.3.txt \
    524 			tzfile.5.txt tzselect.8.txt zic.8.txt zdump.8.txt \
    525 			date.1.txt
    526 COMMON=		calendars CONTRIBUTING LICENSE Makefile \
    527 			NEWS README SECURITY theory.html version
    528 WEB_PAGES=	tz-art.html tz-how-to.html tz-link.html
    529 CHECK_WEB_PAGES=check_theory.html check_tz-art.html \
    530 			check_tz-how-to.html check_tz-link.html
    531 DOCS=		$(MANS) date.1 $(MANTXTS) $(WEB_PAGES)
    532 PRIMARY_YDATA=	africa antarctica asia australasia \
    533 		europe northamerica southamerica
    534 YDATA=		$(PRIMARY_YDATA) etcetera
    535 NDATA=		factory
    536 TDATA_TO_CHECK=	$(YDATA) $(NDATA) backward
    537 TDATA=		$(YDATA) $(NDATA) $(BACKWARD)
    538 ZONETABLES=	zone1970.tab zone.tab
    539 TABDATA=	iso3166.tab $(TZDATA_TEXT) $(ZONETABLES)
    540 LEAP_DEPS=	leapseconds.awk leap-seconds.list
    541 TZDATA_ZI_DEPS=	ziguard.awk zishrink.awk version $(TDATA) \
    542 		  $(PACKRATDATA) $(PACKRATLIST)
    543 DSTDATA_ZI_DEPS= ziguard.awk $(TDATA) $(PACKRATDATA) $(PACKRATLIST)
    544 DATA=		$(TDATA_TO_CHECK) backzone iso3166.tab leap-seconds.list \
    545 			leapseconds $(ZONETABLES)
    546 AWK_SCRIPTS=	checklinks.awk checktab.awk leapseconds.awk \
    547 			ziguard.awk zishrink.awk
    548 MISC=		$(AWK_SCRIPTS)
    549 TZS_YEAR=	2050
    550 TZS_CUTOFF_FLAG=	-c $(TZS_YEAR)
    551 TZS=		to$(TZS_YEAR).tzs
    552 TZS_NEW=	to$(TZS_YEAR)new.tzs
    553 TZS_DEPS=	$(YDATA) asctime.c localtime.c \
    554 			private.h tzfile.h zdump.c zic.c
    555 TZDATA_DIST = $(COMMON) $(DATA) $(MISC)
    556 # EIGHT_YARDS is just a yard short of the whole ENCHILADA.
    557 EIGHT_YARDS = $(TZDATA_DIST) $(DOCS) $(SOURCES) tzdata.zi
    558 ENCHILADA = $(EIGHT_YARDS) $(TZS)
    559 
    560 # Consult these files when deciding whether to rebuild the 'version' file.
    561 # This list is not the same as the output of 'git ls-files', since
    562 # .gitignore is not distributed.
    563 VERSION_DEPS= \
    564 		calendars CONTRIBUTING LICENSE Makefile NEWS README SECURITY \
    565 		africa antarctica asctime.c asia australasia \
    566 		backward backzone \
    567 		checklinks.awk checktab.awk \
    568 		date.1 date.c difftime.c \
    569 		etcetera europe factory iso3166.tab \
    570 		leap-seconds.list leapseconds.awk localtime.c \
    571 		newctime.3 newstrftime.3 newtzset.3 northamerica \
    572 		private.h southamerica strftime.c theory.html \
    573 		time2posix.3 tz-art.html tz-how-to.html tz-link.html \
    574 		tzfile.5 tzfile.h tzselect.8 tzselect.ksh \
    575 		workman.sh zdump.8 zdump.c zic.8 zic.c \
    576 		ziguard.awk zishrink.awk \
    577 		zone.tab zone1970.tab
    578 
    579 # And for the benefit of csh users on systems that assume the user
    580 # shell should be used to handle commands in Makefiles. . .
    581 
    582 SHELL=		/bin/sh
    583 
    584 all:		tzselect zic zdump libtz.a $(TABDATA) \
    585 		  vanguard.zi main.zi rearguard.zi
    586 
    587 ALL:		all date $(ENCHILADA)
    588 
    589 install:	all $(DATA) $(REDO) $(MANS)
    590 		mkdir -p '$(DESTDIR)$(BINDIR)' \
    591 			'$(DESTDIR)$(ZDUMPDIR)' '$(DESTDIR)$(ZICDIR)' \
    592 			'$(DESTDIR)$(LIBDIR)' \
    593 			'$(DESTDIR)$(MANDIR)/man3' '$(DESTDIR)$(MANDIR)/man5' \
    594 			'$(DESTDIR)$(MANDIR)/man8'
    595 		$(ZIC_INSTALL) -l $(LOCALTIME) \
    596 			`case '$(POSIXRULES)' in ?*) echo '-p';; esac \
    597 			` $(POSIXRULES) \
    598 			-t '$(DESTDIR)$(TZDEFAULT)'
    599 		cp -f $(TABDATA) '$(DESTDIR)$(TZDIR)/.'
    600 		cp tzselect '$(DESTDIR)$(BINDIR)/.'
    601 		cp zdump '$(DESTDIR)$(ZDUMPDIR)/.'
    602 		cp zic '$(DESTDIR)$(ZICDIR)/.'
    603 		cp libtz.a '$(DESTDIR)$(LIBDIR)/.'
    604 		$(RANLIB) '$(DESTDIR)$(LIBDIR)/libtz.a'
    605 		cp -f newctime.3 newtzset.3 '$(DESTDIR)$(MANDIR)/man3/.'
    606 		cp -f tzfile.5 '$(DESTDIR)$(MANDIR)/man5/.'
    607 		cp -f tzselect.8 zdump.8 zic.8 '$(DESTDIR)$(MANDIR)/man8/.'
    608 
    609 INSTALL:	ALL install date.1
    610 		mkdir -p '$(DESTDIR)$(BINDIR)' '$(DESTDIR)$(MANDIR)/man1'
    611 		cp date '$(DESTDIR)$(BINDIR)/.'
    612 		cp -f date.1 '$(DESTDIR)$(MANDIR)/man1/.'
    613 
    614 # Calculate version number from git, if available.
    615 # Otherwise, use $(VERSION) unless it is "unknown" and there is already
    616 # a 'version' file, in which case reuse the existing 'version' contents
    617 # and append "-dirty" if the contents do not already end in "-dirty".
    618 version:	$(VERSION_DEPS)
    619 		{ (type git) >/dev/null 2>&1 && \
    620 		  V=`git describe --match '[0-9][0-9][0-9][0-9][a-z]*' \
    621 				--abbrev=7 --dirty` || \
    622 		  if test '$(VERSION)' = unknown && V=`cat $@`; then \
    623 		    case $$V in *-dirty);; *) V=$$V-dirty;; esac; \
    624 		  else \
    625 		    V='$(VERSION)'; \
    626 		  fi; } && \
    627 		printf '%s\n' "$$V" >$@.out
    628 		mv $@.out $@
    629 
    630 # These files can be tailored by setting BACKWARD, PACKRATDATA, PACKRATLIST.
    631 vanguard.zi main.zi rearguard.zi: $(DSTDATA_ZI_DEPS)
    632 		$(AWK) \
    633 		  -v DATAFORM=`expr $@ : '\(.*\).zi'` \
    634 		  -v PACKRATDATA='$(PACKRATDATA)' \
    635 		  -v PACKRATLIST='$(PACKRATLIST)' \
    636 		  -f ziguard.awk \
    637 		  $(TDATA) $(PACKRATDATA) >$@.out
    638 		mv $@.out $@
    639 # This file has a version comment that attempts to capture any tailoring
    640 # via BACKWARD, DATAFORM, PACKRATDATA, PACKRATLIST, and REDO.
    641 tzdata.zi:	$(DATAFORM).zi version zishrink.awk
    642 		version=`sed 1q version` && \
    643 		  LC_ALL=C $(AWK) \
    644 		    -v dataform='$(DATAFORM)' \
    645 		    -v deps='$(DSTDATA_ZI_DEPS) zishrink.awk' \
    646 		    -v redo='$(REDO)' \
    647 		    -v version="$$version" \
    648 		    -f zishrink.awk \
    649 		    $(DATAFORM).zi >$@.out
    650 		mv $@.out $@
    651 
    652 version.h:	version
    653 		VERSION=`cat version` && printf '%s\n' \
    654 		  'static char const PKGVERSION[]="($(PACKAGE)) ";' \
    655 		  "static char const TZVERSION[]=\"$$VERSION\";" \
    656 		  'static char const REPORT_BUGS_TO[]="$(BUGEMAIL)";' \
    657 		  >$@.out
    658 		mv $@.out $@
    659 
    660 zdump:		$(TZDOBJS)
    661 		$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZDOBJS) $(LDLIBS)
    662 
    663 zic:		$(TZCOBJS)
    664 		$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZCOBJS) $(LDLIBS)
    665 
    666 leapseconds:	$(LEAP_DEPS)
    667 		$(AWK) -v EXPIRES_LINE=$(EXPIRES_LINE) \
    668 		  -f leapseconds.awk leap-seconds.list >$@.out
    669 		mv $@.out $@
    670 
    671 # Arguments to pass to submakes of install_data.
    672 # They can be overridden by later submake arguments.
    673 INSTALLARGS = \
    674  BACKWARD='$(BACKWARD)' \
    675  DESTDIR='$(DESTDIR)' \
    676  LEAPSECONDS='$(LEAPSECONDS)' \
    677  PACKRATDATA='$(PACKRATDATA)' \
    678  PACKRATLIST='$(PACKRATLIST)' \
    679  TZDEFAULT='$(TZDEFAULT)' \
    680  TZDIR='$(TZDIR)' \
    681  ZIC='$(ZIC)'
    682 
    683 INSTALL_DATA_DEPS = zic leapseconds tzdata.zi
    684 
    685 # 'make install_data' installs one set of TZif files.
    686 install_data: $(INSTALL_DATA_DEPS)
    687 		$(ZIC_INSTALL) tzdata.zi
    688 
    689 posix_only: $(INSTALL_DATA_DEPS)
    690 		$(MAKE) $(INSTALLARGS) LEAPSECONDS= install_data
    691 
    692 right_only: $(INSTALL_DATA_DEPS)
    693 		$(MAKE) $(INSTALLARGS) LEAPSECONDS='-L leapseconds' \
    694 			install_data
    695 
    696 # In earlier versions of this makefile, the other two directories were
    697 # subdirectories of $(TZDIR).  However, this led to configuration errors.
    698 # For example, with posix_right under the earlier scheme,
    699 # TZ='right/Australia/Adelaide' got you localtime with leap seconds,
    700 # but gmtime without leap seconds, which led to problems with applications
    701 # like sendmail that subtract gmtime from localtime.
    702 # Therefore, the other two directories are now siblings of $(TZDIR).
    703 # You must replace all of $(TZDIR) to switch from not using leap seconds
    704 # to using them, or vice versa.
    705 right_posix:	right_only
    706 		rm -fr '$(DESTDIR)$(TZDIR)-leaps'
    707 		ln -s '$(TZDIR_BASENAME)' '$(DESTDIR)$(TZDIR)-leaps' || \
    708 		  $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only
    709 		$(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only
    710 
    711 posix_right:	posix_only
    712 		rm -fr '$(DESTDIR)$(TZDIR)-posix'
    713 		ln -s '$(TZDIR_BASENAME)' '$(DESTDIR)$(TZDIR)-posix' || \
    714 		  $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only
    715 		$(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only
    716 
    717 zones:		$(REDO)
    718 
    719 # dummy.zd is not a real file; it is mentioned here only so that the
    720 # top-level 'make' does not have a syntax error.
    721 ZDS = dummy.zd
    722 # Rule used only by submakes invoked by the $(TZS_NEW) rule.
    723 # It is separate so that GNU 'make -j' can run instances in parallel.
    724 $(ZDS): zdump
    725 		./zdump -i $(TZS_CUTOFF_FLAG) '$(wd)/'$$(expr $@ : '\(.*\).zd') \
    726 		  >$@
    727 
    728 TZS_NEW_DEPS = tzdata.zi zdump zic
    729 $(TZS_NEW): $(TZS_NEW_DEPS)
    730 		rm -fr tzs$(TZS_YEAR).dir
    731 		mkdir tzs$(TZS_YEAR).dir
    732 		$(zic) -d tzs$(TZS_YEAR).dir tzdata.zi
    733 		$(AWK) '/^L/{print "Link\t" $$2 "\t" $$3}' \
    734 		   tzdata.zi | LC_ALL=C sort >$@.out
    735 		wd=`pwd` && \
    736 		x=`$(AWK) '/^Z/{print "tzs$(TZS_YEAR).dir/" $$2 ".zd"}' \
    737 				tzdata.zi \
    738 			| LC_ALL=C sort -t . -k 2,2` && \
    739 		set x $$x && \
    740 		shift && \
    741 		ZDS=$$* && \
    742 		$(MAKE) wd="$$wd" TZS_CUTOFF_FLAG="$(TZS_CUTOFF_FLAG)" \
    743 		  ZDS="$$ZDS" $$ZDS && \
    744 		sed 's,^TZ=".*\.dir/,TZ=",' $$ZDS >>$@.out
    745 		rm -fr tzs$(TZS_YEAR).dir
    746 		mv $@.out $@
    747 
    748 # If $(TZS) exists but 'make check_tzs' fails, a maintainer should inspect the
    749 # failed output and fix the inconsistency, perhaps by running 'make force_tzs'.
    750 $(TZS):
    751 		touch $@
    752 
    753 force_tzs:	$(TZS_NEW)
    754 		cp $(TZS_NEW) $(TZS)
    755 
    756 libtz.a:	$(LIBOBJS)
    757 		rm -f $@
    758 		$(AR) -rc $@ $(LIBOBJS)
    759 		$(RANLIB) $@
    760 
    761 date:		$(DATEOBJS)
    762 		$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(DATEOBJS) $(LDLIBS)
    763 
    764 tzselect:	tzselect.ksh version
    765 		VERSION=`cat version` && sed \
    766 			-e 's|#!/bin/bash|#!$(KSHELL)|g' \
    767 			-e 's|AWK=[^}]*|AWK='\''$(AWK)'\''|g' \
    768 			-e 's|\(PKGVERSION\)=.*|\1='\''($(PACKAGE)) '\''|' \
    769 			-e 's|\(REPORT_BUGS_TO\)=.*|\1=$(BUGEMAIL)|' \
    770 			-e 's|TZDIR=[^}]*|TZDIR=$(TZDIR)|' \
    771 			-e 's|\(TZVERSION\)=.*|\1='"$$VERSION"'|' \
    772 			<$@.ksh >$@.out
    773 		chmod +x $@.out
    774 		mv $@.out $@
    775 
    776 check:		check_character_set check_white_space check_links \
    777 		  check_name_lengths check_slashed_abbrs check_sorted \
    778 		  check_tables check_web check_ziguard check_zishrink check_tzs
    779 
    780 check_character_set: $(ENCHILADA)
    781 	test ! '$(UTF8_LOCALE)' || \
    782 	! printf 'A\304\200B\n' | \
    783 	  LC_ALL='$(UTF8_LOCALE)' grep -q '^A.B$$' >/dev/null 2>&1 || { \
    784 		LC_ALL='$(UTF8_LOCALE)' && export LC_ALL && \
    785 		sharp='#' && \
    786 		! grep -Env $(SAFE_LINE) $(MANS) date.1 $(MANTXTS) \
    787 			$(MISC) $(SOURCES) $(WEB_PAGES) \
    788 			CONTRIBUTING LICENSE README SECURITY \
    789 			version tzdata.zi && \
    790 		! grep -Env $(SAFE_LINE)'|^UNUSUAL_OK_'$(OK_CHAR)'*$$' \
    791 			Makefile && \
    792 		! grep -Env $(SAFE_SHARP_LINE) $(TDATA_TO_CHECK) backzone \
    793 			leapseconds zone.tab && \
    794 		! grep -Env $(OK_LINE) $(ENCHILADA); \
    795 	}
    796 	touch $@
    797 
    798 check_white_space: $(ENCHILADA)
    799 		patfmt=' \t|[\f\r\v]' && pat=`printf "$$patfmt\\n"` && \
    800 		! grep -En "$$pat" \
    801 			$$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list)
    802 		! grep -n '[$s]$$' \
    803 			$$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list)
    804 		touch $@
    805 
    806 PRECEDES_FILE_NAME = ^(Zone|Link[$s]+[^$s]+)[$s]+
    807 FILE_NAME_COMPONENT_TOO_LONG = $(PRECEDES_FILE_NAME)[^$s]*[^/$s]{15}
    808 
    809 check_name_lengths: $(TDATA_TO_CHECK) backzone
    810 		! grep -En '$(FILE_NAME_COMPONENT_TOO_LONG)' \
    811 			$(TDATA_TO_CHECK) backzone
    812 		touch $@
    813 
    814 PRECEDES_STDOFF = ^(Zone[$s]+[^$s]+)?[$s]+
    815 STDOFF = [-+]?[0-9:.]+
    816 RULELESS_SAVE = (-|$(STDOFF)[sd]?)
    817 RULELESS_SLASHED_ABBRS = \
    818   $(PRECEDES_STDOFF)$(STDOFF)[$s]+$(RULELESS_SAVE)[$s]+[^$s]*/
    819 
    820 check_slashed_abbrs: $(TDATA_TO_CHECK)
    821 		! grep -En '$(RULELESS_SLASHED_ABBRS)' $(TDATA_TO_CHECK)
    822 		touch $@
    823 
    824 CHECK_CC_LIST = { n = split($$1,a,/,/); for (i=2; i<=n; i++) print a[1], a[i]; }
    825 
    826 check_sorted: backward backzone iso3166.tab zone.tab zone1970.tab
    827 		$(AWK) '/^Link/ {printf "%.5d %s\n", g, $$3} /^$$/ {g++}' \
    828 		  backward | LC_ALL=C sort -cu
    829 		$(AWK) '/^Zone/ {print $$2}' backzone | LC_ALL=C sort -cu
    830 		touch $@
    831 
    832 check_links:	checklinks.awk $(TDATA_TO_CHECK) tzdata.zi
    833 		$(AWK) \
    834 		  -v DATAFORM=$(DATAFORM) \
    835 		  -v backcheck=backward \
    836 		  -f checklinks.awk $(TDATA_TO_CHECK)
    837 		$(AWK) \
    838 		  -v DATAFORM=$(DATAFORM) \
    839 		  -f checklinks.awk tzdata.zi
    840 		touch $@
    841 
    842 check_tables:	checktab.awk $(YDATA) backward $(ZONETABLES)
    843 		for tab in $(ZONETABLES); do \
    844 		  test "$$tab" = zone.tab && links='$(BACKWARD)' || links=''; \
    845 		  $(AWK) -f checktab.awk -v zone_table=$$tab $(YDATA) $$links \
    846 		    || exit; \
    847 		done
    848 		touch $@
    849 
    850 check_tzs:	$(TZS) $(TZS_NEW)
    851 		if test -s $(TZS); then \
    852 		  diff -u $(TZS) $(TZS_NEW); \
    853 		else \
    854 		  cp $(TZS_NEW) $(TZS); \
    855 		fi
    856 		touch $@
    857 
    858 check_web:	$(CHECK_WEB_PAGES)
    859 check_theory.html: theory.html
    860 check_tz-art.html: tz-art.html
    861 check_tz-how-to.html: tz-how-to.html
    862 check_tz-link.html: tz-link.html
    863 check_theory.html check_tz-art.html check_tz-how-to.html check_tz-link.html:
    864 		$(CURL) -sS --url https://validator.w3.org/nu/ -F out=gnu \
    865 		    -F file=@$$(expr $@ : 'check_\(.*\)') -o $@.out && \
    866 		  test ! -s $@.out || { cat $@.out; exit 1; }
    867 		mv $@.out $@
    868 
    869 check_ziguard: rearguard.zi vanguard.zi ziguard.awk
    870 		$(AWK) -v DATAFORM=rearguard -f ziguard.awk vanguard.zi | \
    871 		  diff -u rearguard.zi -
    872 		$(AWK) -v DATAFORM=vanguard -f ziguard.awk rearguard.zi | \
    873 		  diff -u vanguard.zi -
    874 		touch $@
    875 
    876 # Check that zishrink.awk does not alter the data, and that ziguard.awk
    877 # preserves main-format data.
    878 check_zishrink: check_zishrink_posix check_zishrink_right
    879 check_zishrink_posix check_zishrink_right: \
    880   zic leapseconds $(PACKRATDATA) $(PACKRATLIST) \
    881   $(TDATA) $(DATAFORM).zi tzdata.zi
    882 		rm -fr $@.dir $@-t.dir $@-shrunk.dir
    883 		mkdir $@.dir $@-t.dir $@-shrunk.dir
    884 		case $@ in \
    885 		  *_right) leap='-L leapseconds';; \
    886 		  *) leap=;; \
    887 		esac && \
    888 		  $(ZIC) $$leap -d $@.dir $(DATAFORM).zi && \
    889 		  $(ZIC) $$leap -d $@-shrunk.dir tzdata.zi && \
    890 		  case $(DATAFORM),$(PACKRATLIST) in \
    891 		    main,) \
    892 		      $(ZIC) $$leap -d $@-t.dir $(TDATA) && \
    893 		      $(AWK) '/^Rule/' $(TDATA) | \
    894 			$(ZIC) $$leap -d $@-t.dir - $(PACKRATDATA) && \
    895 		      diff -r $@.dir $@-t.dir;; \
    896 		  esac
    897 		diff -r $@.dir $@-shrunk.dir
    898 		rm -fr $@.dir $@-t.dir $@-shrunk.dir
    899 		touch $@
    900 
    901 clean_misc:
    902 		rm -fr check_*.dir
    903 		rm -f *.o *.out $(TIME_T_ALTERNATIVES) \
    904 		  check_* core typecheck_* \
    905 		  date tzselect version.h zdump zic libtz.a
    906 clean:		clean_misc
    907 		rm -fr *.dir tzdb-*/
    908 		rm -f *.zi $(TZS_NEW)
    909 
    910 maintainer-clean: clean
    911 		@echo 'This command is intended for maintainers to use; it'
    912 		@echo 'deletes files that may need special tools to rebuild.'
    913 		rm -f leapseconds version $(MANTXTS) $(TZS) *.asc *.tar.*
    914 
    915 names:
    916 		@echo $(ENCHILADA)
    917 
    918 public:		check check_public $(CHECK_TIME_T_ALTERNATIVES) \
    919 		tarballs signatures
    920 
    921 date.1.txt:	date.1
    922 newctime.3.txt:	newctime.3
    923 newstrftime.3.txt: newstrftime.3
    924 newtzset.3.txt:	newtzset.3
    925 time2posix.3.txt: time2posix.3
    926 tzfile.5.txt:	tzfile.5
    927 tzselect.8.txt:	tzselect.8
    928 zdump.8.txt:	zdump.8
    929 zic.8.txt:	zic.8
    930 
    931 $(MANTXTS):	workman.sh
    932 		LC_ALL=C sh workman.sh `expr $@ : '\(.*\)\.txt$$'` >$@.out
    933 		mv $@.out $@
    934 
    935 # Set file timestamps deterministically if possible,
    936 # so that tarballs containing the timestamps are reproducible.
    937 #
    938 # '$(SET_TIMESTAMP_N) N DEST A B C ...' sets the timestamp of the
    939 # file DEST to the maximum of the timestamps of the files A B C ...,
    940 # plus N if GNU ls and touch are available.
    941 SET_TIMESTAMP_N = sh -c '\
    942   n=$$0 dest=$$1; shift; \
    943   touch -cmr `ls -t "$$@" | sed 1q` "$$dest" && \
    944   if test $$n != 0 && \
    945      lsout=`ls -n --time-style="+%s" "$$dest" 2>/dev/null`; then \
    946     set x $$lsout && \
    947     touch -cmd @`expr $$7 + $$n` "$$dest"; \
    948   else :; fi'
    949 # If DEST depends on A B C ... in this Makefile, callers should use
    950 # $(SET_TIMESTAMP_DEP) DEST A B C ..., for the benefit of any
    951 # downstream 'make' that considers equal timestamps to be out of date.
    952 # POSIX allows this 'make' behavior, and HP-UX 'make' does it.
    953 # If all that matters is that the timestamp be reproducible
    954 # and plausible, use $(SET_TIMESTAMP).
    955 SET_TIMESTAMP = $(SET_TIMESTAMP_N) 0
    956 SET_TIMESTAMP_DEP = $(SET_TIMESTAMP_N) 1
    957 
    958 # Set the timestamps to those of the git repository, if available,
    959 # and if the files have not changed since then.
    960 # This uses GNU 'ls --time-style=+%s', which outputs the seconds count,
    961 # and GNU 'touch -d@N FILE', where N is the number of seconds since 1970.
    962 # If git or GNU is absent, don't bother to sync with git timestamps.
    963 # Also, set the timestamp of each prebuilt file like 'leapseconds'
    964 # to be the maximum of the files it depends on.
    965 set-timestamps.out: $(EIGHT_YARDS)
    966 		rm -f $@
    967 		if (type git) >/dev/null 2>&1 && \
    968 		   files=`git ls-files $(EIGHT_YARDS)` && \
    969 		   touch -md @1 test.out; then \
    970 		  rm -f test.out && \
    971 		  for file in $$files; do \
    972 		    if git diff --quiet $$file; then \
    973 		      time=`git log -1 --format='tformat:%ct' $$file` && \
    974 		      touch -cmd @$$time $$file; \
    975 		    else \
    976 		      echo >&2 "$$file: warning: does not match repository"; \
    977 		    fi || exit; \
    978 		  done; \
    979 		fi
    980 		$(SET_TIMESTAMP_DEP) leapseconds $(LEAP_DEPS)
    981 		for file in `ls $(MANTXTS) | sed 's/\.txt$$//'`; do \
    982 		  $(SET_TIMESTAMP_DEP) $$file.txt $$file workman.sh || \
    983 		    exit; \
    984 		done
    985 		$(SET_TIMESTAMP_DEP) version $(VERSION_DEPS)
    986 		$(SET_TIMESTAMP_DEP) tzdata.zi $(TZDATA_ZI_DEPS)
    987 		touch $@
    988 set-tzs-timestamp.out: $(TZS)
    989 		$(SET_TIMESTAMP_DEP) $(TZS) $(TZS_DEPS)
    990 		touch $@
    991 
    992 # The zics below ensure that each data file can stand on its own.
    993 # We also do an all-files run to catch links to links.
    994 
    995 check_public: $(VERSION_DEPS)
    996 		rm -fr public.dir
    997 		mkdir public.dir
    998 		ln $(VERSION_DEPS) public.dir
    999 		cd public.dir && $(MAKE) CFLAGS='$(GCC_DEBUG_FLAGS)' ALL
   1000 		for i in $(TDATA_TO_CHECK) public.dir/tzdata.zi \
   1001 		    public.dir/vanguard.zi public.dir/main.zi \
   1002 		    public.dir/rearguard.zi; \
   1003 		do \
   1004 		  public.dir/zic -v -d public.dir/zoneinfo $$i 2>&1 || exit; \
   1005 		done
   1006 		public.dir/zic -v -d public.dir/zoneinfo-all $(TDATA_TO_CHECK)
   1007 		:
   1008 		: Also check 'backzone' syntax.
   1009 		rm public.dir/main.zi
   1010 		cd public.dir && $(MAKE) PACKRATDATA=backzone main.zi
   1011 		public.dir/zic -d public.dir/zoneinfo main.zi
   1012 		rm public.dir/main.zi
   1013 		cd public.dir && \
   1014 		  $(MAKE) PACKRATDATA=backzone PACKRATLIST=zone.tab main.zi
   1015 		public.dir/zic -d public.dir/zoneinfo main.zi
   1016 		:
   1017 		rm -fr public.dir
   1018 		touch $@
   1019 
   1020 # Check that the code works under various alternative
   1021 # implementations of time_t.
   1022 check_time_t_alternatives: $(TIME_T_ALTERNATIVES)
   1023 $(TIME_T_ALTERNATIVES_TAIL): $(TIME_T_ALTERNATIVES_HEAD)
   1024 $(TIME_T_ALTERNATIVES): $(VERSION_DEPS)
   1025 		rm -fr $@.dir
   1026 		mkdir $@.dir
   1027 		ln $(VERSION_DEPS) $@.dir
   1028 		case $@ in \
   1029 		  int*32_t) range=-2147483648,2147483648;; \
   1030 		  u*) range=0,4294967296;; \
   1031 		  *) range=-4294967296,4294967296;; \
   1032 		esac && \
   1033 		wd=`pwd` && \
   1034 		zones=`$(AWK) '/^[^#]/ { print $$3 }' <zone1970.tab` && \
   1035 		if test $@ = $(TIME_T_ALTERNATIVES_HEAD); then \
   1036 		  range_target=; \
   1037 		else \
   1038 		  range_target=to$$range.tzs; \
   1039 		fi && \
   1040 		(cd $@.dir && \
   1041 		  $(MAKE) TOPDIR="$$wd/$@.dir" \
   1042 		    CFLAGS='$(CFLAGS) -Dtime_tz='"'$@'" \
   1043 		    REDO='$(REDO)' \
   1044 			D=$$wd/$@.dir \
   1045 		    TZS_YEAR="$$range" TZS_CUTOFF_FLAG="-t $$range" \
   1046 		    install $$range_target) && \
   1047 		test $@ = $(TIME_T_ALTERNATIVES_HEAD) || { \
   1048 		  (cd $(TIME_T_ALTERNATIVES_HEAD).dir && \
   1049 		    $(MAKE) TOPDIR="$$wd/$@.dir" \
   1050 		      TZS_YEAR="$$range" TZS_CUTOFF_FLAG="-t $$range" \
   1051 			D=$$wd/$@.dir \
   1052 		      to$$range.tzs) && \
   1053 		  diff -u $(TIME_T_ALTERNATIVES_HEAD).dir/to$$range.tzs \
   1054 			  $@.dir/to$$range.tzs && \
   1055 		  if diff -q Makefile Makefile 2>/dev/null; then \
   1056 		    quiet_option='-q'; \
   1057 		  else \
   1058 		    quiet_option=''; \
   1059 		  fi && \
   1060 		    diff $$quiet_option -r $(TIME_T_ALTERNATIVES_HEAD).dir/etc \
   1061 					   $@.dir/etc && \
   1062 		    diff $$quiet_option -r \
   1063 		      $(TIME_T_ALTERNATIVES_HEAD).dir/usr/share \
   1064 		      $@.dir/usr/share; \
   1065 		}
   1066 		touch $@
   1067 
   1068 TRADITIONAL_ASC = \
   1069   tzcode$(VERSION).tar.gz.asc \
   1070   tzdata$(VERSION).tar.gz.asc
   1071 REARGUARD_ASC = \
   1072   tzdata$(VERSION)-rearguard.tar.gz.asc
   1073 ALL_ASC = $(TRADITIONAL_ASC) $(REARGUARD_ASC) \
   1074   tzdb-$(VERSION).tar.lz.asc
   1075 
   1076 tarballs rearguard_tarballs tailored_tarballs traditional_tarballs \
   1077 signatures rearguard_signatures traditional_signatures: \
   1078   version set-timestamps.out rearguard.zi vanguard.zi
   1079 		VERSION=`cat version` && \
   1080 		$(MAKE) AWK='$(AWK)' VERSION="$$VERSION" $@_version
   1081 
   1082 # These *_version rules are intended for use if VERSION is set by some
   1083 # other means.  Ordinarily these rules are used only by the above
   1084 # non-_version rules, which set VERSION on the 'make' command line.
   1085 tarballs_version: traditional_tarballs_version rearguard_tarballs_version \
   1086   tzdb-$(VERSION).tar.lz
   1087 rearguard_tarballs_version: \
   1088   tzdata$(VERSION)-rearguard.tar.gz
   1089 traditional_tarballs_version: \
   1090   tzcode$(VERSION).tar.gz tzdata$(VERSION).tar.gz
   1091 tailored_tarballs_version: \
   1092   tzdata$(VERSION)-tailored.tar.gz
   1093 signatures_version: $(ALL_ASC)
   1094 rearguard_signatures_version: $(REARGUARD_ASC)
   1095 traditional_signatures_version: $(TRADITIONAL_ASC)
   1096 
   1097 tzcode$(VERSION).tar.gz: set-timestamps.out
   1098 		LC_ALL=C && export LC_ALL && \
   1099 		tar $(TARFLAGS) -cf - \
   1100 		    $(COMMON) $(DOCS) $(SOURCES) | \
   1101 		  gzip $(GZIPFLAGS) >$@.out
   1102 		mv $@.out $@
   1103 
   1104 tzdata$(VERSION).tar.gz: set-timestamps.out
   1105 		LC_ALL=C && export LC_ALL && \
   1106 		tar $(TARFLAGS) -cf - $(TZDATA_DIST) | \
   1107 		  gzip $(GZIPFLAGS) >$@.out
   1108 		mv $@.out $@
   1109 
   1110 # Create empty files with a reproducible timestamp.
   1111 CREATE_EMPTY = TZ=UTC0 touch -mt 202010122253.00
   1112 
   1113 # The obsolescent *rearguard* targets and related macros are present
   1114 # for backwards compatibility with tz releases 2018e through 2022a.
   1115 # They should go away eventually.  To build rearguard tarballs you
   1116 # can instead use 'make DATAFORM=rearguard tailored_tarballs'.
   1117 tzdata$(VERSION)-rearguard.tar.gz: rearguard.zi set-timestamps.out
   1118 		rm -fr $@.dir
   1119 		mkdir $@.dir
   1120 		ln $(TZDATA_DIST) $@.dir
   1121 		cd $@.dir && rm -f $(TDATA) $(PACKRATDATA) version
   1122 		for f in $(TDATA) $(PACKRATDATA); do \
   1123 		  rearf=$@.dir/$$f; \
   1124 		  $(AWK) -v DATAFORM=rearguard -f ziguard.awk $$f >$$rearf && \
   1125 		  $(SET_TIMESTAMP_DEP) $$rearf ziguard.awk $$f || exit; \
   1126 		done
   1127 		sed '1s/$$/-rearguard/' <version >$@.dir/version
   1128 		: The dummy pacificnew pacifies TZUpdater 2.3.1 and earlier.
   1129 		$(CREATE_EMPTY) $@.dir/pacificnew
   1130 		touch -cmr version $@.dir/version
   1131 		LC_ALL=C && export LC_ALL && \
   1132 		  (cd $@.dir && \
   1133 		   tar $(TARFLAGS) -cf - \
   1134 			$(TZDATA_DIST) pacificnew | \
   1135 		     gzip $(GZIPFLAGS)) >$@.out
   1136 		mv $@.out $@
   1137 
   1138 # Create a tailored tarball suitable for TZUpdater and compatible tools.
   1139 # For example, 'make DATAFORM=vanguard tailored_tarballs' makes a tarball
   1140 # useful for testing whether TZUpdater supports vanguard form.
   1141 # The generated tarball is not byte-for-byte equivalent to a hand-tailored
   1142 # traditional tarball, as data entries are put into 'etcetera' even if they
   1143 # came from some other source file.  However, the effect should be the same
   1144 # for ordinary use, which reads all the source files.
   1145 tzdata$(VERSION)-tailored.tar.gz: set-timestamps.out
   1146 		rm -fr $@.dir
   1147 		mkdir $@.dir
   1148 		: The dummy pacificnew pacifies TZUpdater 2.3.1 and earlier.
   1149 		cd $@.dir && \
   1150 		  $(CREATE_EMPTY) $(PRIMARY_YDATA) $(NDATA) backward \
   1151 		  `test $(DATAFORM) = vanguard || echo pacificnew`
   1152 		(grep '^#' tzdata.zi && echo && cat $(DATAFORM).zi) \
   1153 		  >$@.dir/etcetera
   1154 		touch -cmr tzdata.zi $@.dir/etcetera
   1155 		sed -n \
   1156 		  -e '/^# *version  *\(.*\)/h' \
   1157 		  -e '/^# *ddeps  */H' \
   1158 		  -e '$$!d' \
   1159 		  -e 'g' \
   1160 		  -e 's/^# *version  *//' \
   1161 		  -e 's/\n# *ddeps  */-/' \
   1162 		  -e 's/ /-/g' \
   1163 		  -e 'p' \
   1164 		  <tzdata.zi >$@.dir/version
   1165 		touch -cmr version $@.dir/version
   1166 		links= && \
   1167 		  for file in $(TZDATA_DIST); do \
   1168 		    test -f $@.dir/$$file || links="$$links $$file"; \
   1169 		  done && \
   1170 		  ln $$links $@.dir
   1171 		LC_ALL=C && export LC_ALL && \
   1172 		  (cd $@.dir && \
   1173 		   tar $(TARFLAGS) -cf - * | gzip $(GZIPFLAGS)) >$@.out
   1174 		mv $@.out $@
   1175 
   1176 tzdb-$(VERSION).tar.lz: set-timestamps.out set-tzs-timestamp.out
   1177 		rm -fr tzdb-$(VERSION)
   1178 		mkdir tzdb-$(VERSION)
   1179 		ln $(ENCHILADA) tzdb-$(VERSION)
   1180 		$(SET_TIMESTAMP) tzdb-$(VERSION) tzdb-$(VERSION)/*
   1181 		LC_ALL=C && export LC_ALL && \
   1182 		tar $(TARFLAGS) -cf - tzdb-$(VERSION) | lzip -9 >$@.out
   1183 		mv $@.out $@
   1184 
   1185 tzcode$(VERSION).tar.gz.asc: tzcode$(VERSION).tar.gz
   1186 tzdata$(VERSION).tar.gz.asc: tzdata$(VERSION).tar.gz
   1187 tzdata$(VERSION)-rearguard.tar.gz.asc: tzdata$(VERSION)-rearguard.tar.gz
   1188 tzdb-$(VERSION).tar.lz.asc: tzdb-$(VERSION).tar.lz
   1189 $(ALL_ASC):
   1190 		$(GPG) --armor --detach-sign $?
   1191 
   1192 TYPECHECK_CFLAGS = $(CFLAGS) -DTYPECHECK -D__time_t_defined -D_TIME_T
   1193 typecheck: typecheck_long_long typecheck_unsigned
   1194 typecheck_long_long typecheck_unsigned: $(VERSION_DEPS)
   1195 		rm -fr $@.dir
   1196 		mkdir $@.dir
   1197 		ln $(VERSION_DEPS) $@.dir
   1198 		cd $@.dir && \
   1199 		  case $@ in \
   1200 		    *_long_long) i="long long";; \
   1201 		    *_unsigned ) i="unsigned" ;; \
   1202 		  esac && \
   1203 		  typecheck_cflags='' && \
   1204 		  $(MAKE) \
   1205 		    CFLAGS="$(TYPECHECK_CFLAGS) \"-Dtime_t=$$i\"" \
   1206 		    TOPDIR="`pwd`" \
   1207 		    install
   1208 		$@.dir/zdump -i -c 1970,1971 Europe/Rome
   1209 		touch $@
   1210 
   1211 zonenames:	tzdata.zi
   1212 		@$(AWK) '/^Z/ { print $$2 } /^L/ { print $$3 }' tzdata.zi
   1213 
   1214 asctime.o:	private.h tzfile.h
   1215 date.o:		private.h
   1216 difftime.o:	private.h
   1217 localtime.o:	private.h tzfile.h
   1218 strftime.o:	private.h tzfile.h
   1219 zdump.o:	version.h
   1220 zic.o:		private.h tzfile.h version.h
   1221 
   1222 .PHONY: ALL INSTALL all
   1223 .PHONY: check check_time_t_alternatives
   1224 .PHONY: check_web check_zishrink
   1225 .PHONY: clean clean_misc dummy.zd force_tzs
   1226 .PHONY: install install_data maintainer-clean names
   1227 .PHONY: posix_only posix_right public
   1228 .PHONY: rearguard_signatures rearguard_signatures_version
   1229 .PHONY: rearguard_tarballs rearguard_tarballs_version
   1230 .PHONY: right_only right_posix signatures signatures_version
   1231 .PHONY: tarballs tarballs_version
   1232 .PHONY: traditional_signatures traditional_signatures_version
   1233 .PHONY: traditional_tarballs traditional_tarballs_version
   1234 .PHONY: tailored_tarballs tailored_tarballs_version
   1235 .PHONY: typecheck
   1236 .PHONY: zonenames zones
   1237 .PHONY: $(ZDS)
   1238