xref: /freebsd/contrib/tzdata/Makefile (revision 9c999a259f00b35f0467acd351fea9157ed7e1e4)
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.
7PACKAGE=	tzcode
8
9# Version number for the distribution, overridden in the 'tarballs' rule below.
10VERSION=	unknown
11
12# Email address for bug reports.
13BUGEMAIL=	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.
26DATAFORM=		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
36LOCALTIME=	GMT
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46# Any other value for POSIXRULES is obsolete and should not be relied on, as: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
63POSIXRULES=	-
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.
84DESTDIR =
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.
90TOPDIR =
91
92# The default local timezone is taken from the file TZDEFAULT.
93TZDEFAULT = $(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.
98USRDIR = usr
99USRSHAREDIR = $(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.
104TZDIR_BASENAME=	zoneinfo
105TZDIR = $(TOPDIR)/$(USRSHAREDIR)/$(TZDIR_BASENAME)
106
107# The "tzselect" and (if you do "make INSTALL") "date" commands go in:
108BINDIR = $(TOPDIR)/$(USRDIR)/bin
109
110# The "zdump" command goes in:
111ZDUMPDIR = $(BINDIR)
112
113# The "zic" command goes in:
114ZICDIR = $(TOPDIR)/$(USRDIR)/sbin
115
116# Manual pages go in subdirectories of. . .
117MANDIR = $(TOPDIR)/$(USRSHAREDIR)/man
118
119# Library functions are put in an archive in LIBDIR.
120LIBDIR = $(TOPDIR)/$(USRDIR)/lib
121
122
123# Types to try, as an alternative to time_t.
124TIME_T_ALTERNATIVES = $(TIME_T_ALTERNATIVES_HEAD) $(TIME_T_ALTERNATIVES_TAIL)
125TIME_T_ALTERNATIVES_HEAD = int_least64_t
126TIME_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
148REDO=		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.
159EXPIRES_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
170TZDATA_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
177BACKWARD=	backward
178
179# If you want out-of-scope and often-wrong data from the file 'backzone', use
180#	PACKRATDATA=	backzone
181# To omit this data, use
182#	PACKRATDATA=
183
184PACKRATDATA=
185
186# The name of a locale using the UTF-8 encoding, used during self-tests.
187# The tests are skipped if the name does not appear to work on this system.
188
189UTF8_LOCALE=	en_US.utf8
190
191# Non-default libraries needed to link.
192LDLIBS=
193
194# Add the following to the end of the "CFLAGS=" line as needed to override
195# defaults specified in the source code.  "-DFOO" is equivalent to "-DFOO=1".
196#  -DDEPRECATE_TWO_DIGIT_YEARS for optional runtime warnings about strftime
197#	formats that generate only the last two digits of year numbers
198#  -DEPOCH_LOCAL if the 'time' function returns local time not UT
199#  -DEPOCH_OFFSET=N if the 'time' function returns a value N greater
200#	than what POSIX specifies, assuming local time is UT.
201#	For example, N is 252460800 on AmigaOS.
202#  -DHAVE_DECL_ASCTIME_R=0 if <time.h> does not declare asctime_r
203#  -DHAVE_DECL_ENVIRON if <unistd.h> declares 'environ'
204#  -DHAVE_DIRECT_H if mkdir needs <direct.h> (MS-Windows)
205#  -DHAVE_GENERIC=0 if _Generic does not work
206#  -DHAVE_GETTEXT if 'gettext' works (e.g., GNU/Linux, FreeBSD, Solaris)
207#  -DHAVE_INCOMPATIBLE_CTIME_R if your system's time.h declares
208#	ctime_r and asctime_r incompatibly with the POSIX standard
209#	(Solaris when _POSIX_PTHREAD_SEMANTICS is not defined).
210#  -DHAVE_INTTYPES_H if you have a non-C99 compiler with <inttypes.h>
211#  -DHAVE_LINK=0 if your system lacks a link function
212#  -DHAVE_LOCALTIME_R=0 if your system lacks a localtime_r function
213#  -DHAVE_LOCALTIME_RZ=0 if you do not want zdump to use localtime_rz
214#	localtime_rz can make zdump significantly faster, but is nonstandard.
215#  -DHAVE_MALLOC_ERRNO=0 if malloc etc. do not set errno on failure.
216#  -DHAVE_POSIX_DECLS=0 if your system's include files do not declare
217#	functions like 'link' or variables like 'tzname' required by POSIX
218#  -DHAVE_SNPRINTF=0 if your system lacks the snprintf function
219#  -DHAVE_STDBOOL_H if you have a non-C99 compiler with <stdbool.h>
220#  -DHAVE_STDINT_H if you have a non-C99 compiler with <stdint.h>
221#  -DHAVE_STRFTIME_L if <time.h> declares locale_t and strftime_l
222#  -DHAVE_STRDUP=0 if your system lacks the strdup function
223#  -DHAVE_STRTOLL=0 if your system lacks the strtoll function
224#  -DHAVE_SYMLINK=0 if your system lacks the symlink function
225#  -DHAVE_SYS_STAT_H=0 if your compiler lacks a <sys/stat.h>
226#  -DHAVE_TZSET=0 if your system lacks a tzset function
227#  -DHAVE_UNISTD_H=0 if your compiler lacks a <unistd.h>
228#  -Dlocale_t=XXX if your system uses XXX instead of locale_t
229#  -DRESERVE_STD_EXT_IDS if your platform reserves standard identifiers
230#	with external linkage, e.g., applications cannot define 'localtime'.
231#  -Dssize_t=long on hosts like MS-Windows that lack ssize_t
232#  -DSUPPRESS_TZDIR to not prepend TZDIR to file names; this has
233#	security implications and is not recommended for general use
234#  -DTHREAD_SAFE to make localtime.c thread-safe, as POSIX requires;
235#	not needed by the main-program tz code, which is single-threaded.
236#	Append other compiler flags as needed, e.g., -pthread on GNU/Linux.
237#  -Dtime_tz=\"T\" to use T as the time_t type, rather than the system time_t
238#	This is intended for internal use only; it mangles external names.
239#  -DTZ_DOMAIN=\"foo\" to use "foo" for gettext domain name; default is "tz"
240#  -DTZ_DOMAINDIR=\"/path\" to use "/path" for gettext directory;
241#	the default is system-supplied, typically "/usr/lib/locale"
242#  -DTZDEFRULESTRING=\",date/time,date/time\" to default to the specified
243#	DST transitions if the time zone files cannot be accessed
244#  -DUNINIT_TRAP if reading uninitialized storage can cause problems
245#	other than simply getting garbage data
246#  -DUSE_LTZ=0 to build zdump with the system time zone library
247#	Also set TZDOBJS=zdump.o and CHECK_TIME_T_ALTERNATIVES= below.
248#  -DZIC_BLOAT_DEFAULT=\"fat\" to default zic's -b option to "fat", and
249#	similarly for "slim".  Fat TZif files work around incompatibilities
250#	and bugs in some TZif readers, notably readers that mishandle 64-bit
251#	data in TZif files.  Slim TZif files are more efficient and do not
252#	work around these incompatibilities and bugs.  If not given, the
253#	default is "slim".
254#  -DZIC_MAX_ABBR_LEN_WO_WARN=3
255#	(or some other number) to set the maximum time zone abbreviation length
256#	that zic will accept without a warning (the default is 6)
257#  $(GCC_DEBUG_FLAGS) if you are using recent GCC and want lots of checking
258# Select instrumentation via "make GCC_INSTRUMENT='whatever'".
259GCC_INSTRUMENT = \
260  -fsanitize=undefined -fsanitize-address-use-after-scope \
261  -fsanitize-undefined-trap-on-error -fstack-protector
262# Omit -fanalyzer from GCC_DEBUG_FLAGS, as it makes GCC too slow.
263GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \
264  $(GCC_INSTRUMENT) \
265  -Wall -Wextra \
266  -Walloc-size-larger-than=100000 -Warray-bounds=2 \
267  -Wbad-function-cast -Wcast-align=strict -Wdate-time \
268  -Wdeclaration-after-statement -Wdouble-promotion \
269  -Wduplicated-branches -Wduplicated-cond \
270  -Wformat=2 -Wformat-overflow=2 -Wformat-signedness -Wformat-truncation \
271  -Winit-self -Wlogical-op \
272  -Wmissing-declarations -Wmissing-prototypes -Wnested-externs \
273  -Wnull-dereference \
274  -Wold-style-definition -Woverlength-strings -Wpointer-arith \
275  -Wshadow -Wshift-overflow=2 -Wstrict-overflow \
276  -Wstrict-prototypes -Wstringop-overflow=4 \
277  -Wstringop-truncation -Wsuggest-attribute=cold \
278  -Wsuggest-attribute=const -Wsuggest-attribute=format \
279  -Wsuggest-attribute=malloc \
280  -Wsuggest-attribute=noreturn -Wsuggest-attribute=pure \
281  -Wtrampolines -Wundef -Wuninitialized -Wunused-macros \
282  -Wvariadic-macros -Wvla -Wwrite-strings \
283  -Wno-address -Wno-format-nonliteral -Wno-sign-compare \
284  -Wno-type-limits -Wno-unused-parameter
285#
286# If your system has a "GMT offset" field in its "struct tm"s
287# (or if you decide to add such a field in your system's "time.h" file),
288# add the name to a define such as
289#	-DTM_GMTOFF=tm_gmtoff
290# to the end of the "CFLAGS=" line.  If not defined, the code attempts to
291# guess TM_GMTOFF from other macros; define NO_TM_GMTOFF to suppress this.
292# Similarly, if your system has a "zone abbreviation" field, define
293#	-DTM_ZONE=tm_zone
294# and define NO_TM_ZONE to suppress any guessing.  These two fields are not
295# required by POSIX, but are widely available on GNU/Linux and BSD systems.
296#
297# The next batch of options control support for external variables
298# exported by tzcode.  In practice these variables are less useful
299# than TM_GMTOFF and TM_ZONE.  However, most of them are standardized.
300# #
301# # To omit or support the external variable "tzname", add one of:
302# #	-DHAVE_TZNAME=0 # do not support "tzname"
303# #	-DHAVE_TZNAME=1 # support "tzname", which is defined by system library
304# #	-DHAVE_TZNAME=2 # support and define "tzname"
305# # to the "CFLAGS=" line.  "tzname" is required by POSIX 1988 and later.
306# # If not defined, the code attempts to guess HAVE_TZNAME from other macros.
307# # Warning: unless time_tz is also defined, HAVE_TZNAME=1 can cause
308# # crashes when combined with some platforms' standard libraries,
309# # presumably due to memory allocation issues.
310# #
311# # To omit or support the external variables "timezone" and "daylight", add
312# #	-DUSG_COMPAT=0 # do not support
313# #	-DUSG_COMPAT=1 # support, and variables are defined by system library
314# #	-DUSG_COMPAT=2 # support and define variables
315# # to the "CFLAGS=" line; "timezone" and "daylight" are inspired by
316# # Unix Systems Group code and are required by POSIX 2008 (with XSI) and later.
317# # If not defined, the code attempts to guess USG_COMPAT from other macros.
318# #
319# # To support the external variable "altzone", add
320# #	-DALTZONE=0 # do not support
321# #	-DALTZONE=1 # support "altzone", which is defined by system library
322# #	-DALTZONE=2 # support and define "altzone"
323# # to the end of the "CFLAGS=" line; although "altzone" appeared in
324# # System V Release 3.1 it has not been standardized.
325# # If not defined, the code attempts to guess ALTZONE from other macros.
326#
327# If you want functions that were inspired by early versions of X3J11's work,
328# add
329#	-DSTD_INSPIRED
330# to the end of the "CFLAGS=" line.  This arranges for the functions
331# "offtime", "timelocal", "timegm", "timeoff",
332# "posix2time", and "time2posix" to be added to the time conversion library.
333# "offtime" is like "gmtime" except that it accepts a second (long) argument
334# that gives an offset to add to the time_t when converting it.
335# "timelocal" is equivalent to "mktime".
336# "timegm" is like "timelocal" except that it turns a struct tm into
337# a time_t using UT (rather than local time as "timelocal" does).
338# "timeoff" is like "timegm" except that it accepts a second (long) argument
339# that gives an offset to use when converting to a time_t.
340# "posix2time" and "time2posix" are described in an included manual page.
341# X3J11's work does not describe any of these functions.
342# These functions may well disappear in future releases of the time
343# conversion package.
344#
345# If you don't want functions that were inspired by NetBSD, add
346#	-DNETBSD_INSPIRED=0
347# to the end of the "CFLAGS=" line.  Otherwise, the functions
348# "localtime_rz", "mktime_z", "tzalloc", and "tzfree" are added to the
349# time library, and if STD_INSPIRED is also defined the functions
350# "posix2time_z" and "time2posix_z" are added as well.
351# The functions ending in "_z" (or "_rz") are like their unsuffixed
352# (or suffixed-by-"_r") counterparts, except with an extra first
353# argument of opaque type timezone_t that specifies the timezone.
354# "tzalloc" allocates a timezone_t value, and "tzfree" frees it.
355#
356# If you want to allocate state structures in localtime, add
357#	-DALL_STATE
358# to the end of the "CFLAGS=" line.  Storage is obtained by calling malloc.
359#
360# NIST-PCTS:151-2, Version 1.4, (1993-12-03) is a test suite put
361# out by the National Institute of Standards and Technology
362# which claims to test C and Posix conformance.  If you want to pass PCTS, add
363#	-DPCTS
364# to the end of the "CFLAGS=" line.
365#
366# If you want strict compliance with XPG4 as of 1994-04-09, add
367#	-DXPG4_1994_04_09
368# to the end of the "CFLAGS=" line.  This causes "strftime" to always return
369# 53 as a week number (rather than 52 or 53) for January days before
370# January's first Monday when a "%V" format is used and January 1
371# falls on a Friday, Saturday, or Sunday.
372
373CFLAGS=
374
375# Linker flags.  Default to $(LFLAGS) for backwards compatibility
376# to release 2012h and earlier.
377
378LDFLAGS=	$(LFLAGS)
379
380# For leap seconds, this Makefile uses LEAPSECONDS='-L leapseconds' in
381# submake command lines.  The default is no leap seconds.
382
383LEAPSECONDS=
384
385# The zic command and its arguments.
386
387zic=		./zic
388ZIC=		$(zic) $(ZFLAGS)
389
390# To shrink the size of installed TZif files,
391# append "-r @N" to omit data before N-seconds-after-the-Epoch.
392# To grow the files and work around older application bugs, append "-b fat";
393# see ZIC_BLOAT_DEFAULT above.
394# See the zic man page for more about -b and -r.
395ZFLAGS=
396
397# How to use zic to install TZif files.
398
399ZIC_INSTALL=	$(ZIC) -d '$(DESTDIR)$(TZDIR)' $(LEAPSECONDS)
400
401# The name of a Posix-compliant 'awk' on your system.
402# Older 'mawk' versions, such as the 'mawk' in Ubuntu 16.04, might dump core;
403# on Ubuntu you can work around this with
404#	AWK=		gawk
405AWK=		awk
406
407# The full path name of a Posix-compliant shell, preferably one that supports
408# the Korn shell's 'select' statement as an extension.
409# These days, Bash is the most popular.
410# It should be OK to set this to /bin/sh, on platforms where /bin/sh
411# lacks 'select' or doesn't completely conform to Posix, but /bin/bash
412# is typically nicer if it works.
413KSHELL=		/bin/bash
414
415# Name of curl <https://curl.haxx.se/>, used for HTML validation.
416CURL=		curl
417
418# Name of GNU Privacy Guard <https://gnupg.org/>, used to sign distributions.
419GPG=		gpg
420
421# This expensive test requires USE_LTZ.
422# To suppress it, define this macro to be empty.
423CHECK_TIME_T_ALTERNATIVES = check_time_t_alternatives
424
425# SAFE_CHAR is a regular expression that matches a safe character.
426# Some parts of this distribution are limited to safe characters;
427# others can use any UTF-8 character.
428# For now, the safe characters are a safe subset of ASCII.
429# The caller must set the shell variable 'sharp' to the character '#',
430# since Makefile macros cannot contain '#'.
431# TAB_CHAR is a single tab character, in single quotes.
432TAB_CHAR=	'	'
433SAFE_CHARSET1=	$(TAB_CHAR)' !\"'$$sharp'$$%&'\''()*+,./0123456789:;<=>?@'
434SAFE_CHARSET2=	'ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\^_`'
435SAFE_CHARSET3=	'abcdefghijklmnopqrstuvwxyz{|}~'
436SAFE_CHARSET=	$(SAFE_CHARSET1)$(SAFE_CHARSET2)$(SAFE_CHARSET3)
437SAFE_CHAR=	'[]'$(SAFE_CHARSET)'-]'
438
439# These characters are Latin-1, and so are likely to be displayable
440# even in editors with limited character sets.
441UNUSUAL_OK_LATIN_1 = «°±»½¾×
442# This IPA symbol is represented in Unicode as the composition of
443# U+0075 and U+032F, and U+032F is not considered alphabetic by some
444# grep implementations that do not grok composition.
445UNUSUAL_OK_IPA = u̯
446# Non-ASCII non-letters that OK_CHAR allows, as these characters are
447# useful in commentary.
448UNUSUAL_OK_CHARSET= $(UNUSUAL_OK_LATIN_1)$(UNUSUAL_OK_IPA)
449
450# OK_CHAR matches any character allowed in the distributed files.
451# This is the same as SAFE_CHAR, except that UNUSUAL_OK_CHARSET and
452# multibyte letters are also allowed so that commentary can contain a
453# few safe symbols and people's names and can quote non-English sources.
454# Other non-letters are limited to ASCII renderings for the
455# convenience of maintainers using XEmacs 21.5.34, which by default
456# mishandles Unicode characters U+0100 and greater.
457OK_CHAR=	'[][:alpha:]$(UNUSUAL_OK_CHARSET)'$(SAFE_CHARSET)'-]'
458
459# SAFE_LINE matches a line of safe characters.
460# SAFE_SHARP_LINE is similar, except any OK character can follow '#';
461# this is so that comments can contain non-ASCII characters.
462# OK_LINE matches a line of OK characters.
463SAFE_LINE=	'^'$(SAFE_CHAR)'*$$'
464SAFE_SHARP_LINE='^'$(SAFE_CHAR)'*('$$sharp$(OK_CHAR)'*)?$$'
465OK_LINE=	'^'$(OK_CHAR)'*$$'
466
467# Flags to give 'tar' when making a distribution.
468# Try to use flags appropriate for GNU tar.
469GNUTARFLAGS= --numeric-owner --owner=0 --group=0 --mode=go+u,go-w --sort=name
470TARFLAGS=	`if tar $(GNUTARFLAGS) --version >/dev/null 2>&1; \
471		 then echo $(GNUTARFLAGS); \
472		 else :; \
473		 fi`
474
475# Flags to give 'gzip' when making a distribution.
476GZIPFLAGS=	-9n
477
478###############################################################################
479
480#MAKE=		make
481
482cc=		cc
483CC=		$(cc) -DTZDIR='"$(TZDIR)"'
484
485AR=		ar
486
487# ':' on typical hosts; 'ranlib' on the ancient hosts that still need ranlib.
488RANLIB=		:
489
490TZCOBJS=	zic.o
491TZDOBJS=	zdump.o localtime.o asctime.o strftime.o
492DATEOBJS=	date.o localtime.o strftime.o asctime.o
493LIBSRCS=	localtime.c asctime.c difftime.c strftime.c
494LIBOBJS=	localtime.o asctime.o difftime.o strftime.o
495HEADERS=	tzfile.h private.h
496NONLIBSRCS=	zic.c zdump.c
497NEWUCBSRCS=	date.c
498SOURCES=	$(HEADERS) $(LIBSRCS) $(NONLIBSRCS) $(NEWUCBSRCS) \
499			tzselect.ksh workman.sh
500MANS=		newctime.3 newstrftime.3 newtzset.3 time2posix.3 \
501			tzfile.5 tzselect.8 zic.8 zdump.8
502MANTXTS=	newctime.3.txt newstrftime.3.txt newtzset.3.txt \
503			time2posix.3.txt \
504			tzfile.5.txt tzselect.8.txt zic.8.txt zdump.8.txt \
505			date.1.txt
506COMMON=		calendars CONTRIBUTING LICENSE Makefile \
507			NEWS README theory.html version
508WEB_PAGES=	tz-art.html tz-how-to.html tz-link.html
509CHECK_WEB_PAGES=check_theory.html check_tz-art.html \
510			check_tz-how-to.html check_tz-link.html
511DOCS=		$(MANS) date.1 $(MANTXTS) $(WEB_PAGES)
512PRIMARY_YDATA=	africa antarctica asia australasia \
513		europe northamerica southamerica
514YDATA=		$(PRIMARY_YDATA) etcetera
515NDATA=		factory
516TDATA_TO_CHECK=	$(YDATA) $(NDATA) backward
517TDATA=		$(YDATA) $(NDATA) $(BACKWARD)
518ZONETABLES=	zone1970.tab zone.tab
519TABDATA=	iso3166.tab $(TZDATA_TEXT) $(ZONETABLES)
520LEAP_DEPS=	leapseconds.awk leap-seconds.list
521TZDATA_ZI_DEPS=	ziguard.awk zishrink.awk version $(TDATA) $(PACKRATDATA)
522DSTDATA_ZI_DEPS= ziguard.awk $(TDATA) $(PACKRATDATA)
523DATA=		$(TDATA_TO_CHECK) backzone iso3166.tab leap-seconds.list \
524			leapseconds $(ZONETABLES)
525AWK_SCRIPTS=	checklinks.awk checktab.awk leapseconds.awk \
526			ziguard.awk zishrink.awk
527MISC=		$(AWK_SCRIPTS) zoneinfo2tdf.pl
528TZS_YEAR=	2050
529TZS_CUTOFF_FLAG=	-c $(TZS_YEAR)
530TZS=		to$(TZS_YEAR).tzs
531TZS_NEW=	to$(TZS_YEAR)new.tzs
532TZS_DEPS=	$(YDATA) asctime.c localtime.c \
533			private.h tzfile.h zdump.c zic.c
534# EIGHT_YARDS is just a yard short of the whole ENCHILADA.
535EIGHT_YARDS = $(COMMON) $(DOCS) $(SOURCES) $(DATA) $(MISC) tzdata.zi
536ENCHILADA = $(EIGHT_YARDS) $(TZS)
537
538# Consult these files when deciding whether to rebuild the 'version' file.
539# This list is not the same as the output of 'git ls-files', since
540# .gitignore is not distributed.
541VERSION_DEPS= \
542		calendars CONTRIBUTING LICENSE Makefile NEWS README \
543		africa antarctica asctime.c asia australasia \
544		backward backzone \
545		checklinks.awk checktab.awk \
546		date.1 date.c difftime.c \
547		etcetera europe factory iso3166.tab \
548		leap-seconds.list leapseconds.awk localtime.c \
549		newctime.3 newstrftime.3 newtzset.3 northamerica \
550		private.h southamerica strftime.c theory.html \
551		time2posix.3 tz-art.html tz-how-to.html tz-link.html \
552		tzfile.5 tzfile.h tzselect.8 tzselect.ksh \
553		workman.sh zdump.8 zdump.c zic.8 zic.c \
554		ziguard.awk zishrink.awk \
555		zone.tab zone1970.tab zoneinfo2tdf.pl
556
557# And for the benefit of csh users on systems that assume the user
558# shell should be used to handle commands in Makefiles. . .
559
560SHELL=		/bin/sh
561
562all:		tzselect zic zdump libtz.a $(TABDATA) \
563		  vanguard.zi main.zi rearguard.zi
564
565ALL:		all date $(ENCHILADA)
566
567install:	all $(DATA) $(REDO) $(MANS)
568		mkdir -p '$(DESTDIR)$(BINDIR)' \
569			'$(DESTDIR)$(ZDUMPDIR)' '$(DESTDIR)$(ZICDIR)' \
570			'$(DESTDIR)$(LIBDIR)' \
571			'$(DESTDIR)$(MANDIR)/man3' '$(DESTDIR)$(MANDIR)/man5' \
572			'$(DESTDIR)$(MANDIR)/man8'
573		$(ZIC_INSTALL) -l $(LOCALTIME) \
574			`case '$(POSIXRULES)' in ?*) echo '-p';; esac \
575			` $(POSIXRULES) \
576			-t '$(DESTDIR)$(TZDEFAULT)'
577		cp -f $(TABDATA) '$(DESTDIR)$(TZDIR)/.'
578		cp tzselect '$(DESTDIR)$(BINDIR)/.'
579		cp zdump '$(DESTDIR)$(ZDUMPDIR)/.'
580		cp zic '$(DESTDIR)$(ZICDIR)/.'
581		cp libtz.a '$(DESTDIR)$(LIBDIR)/.'
582		$(RANLIB) '$(DESTDIR)$(LIBDIR)/libtz.a'
583		cp -f newctime.3 newtzset.3 '$(DESTDIR)$(MANDIR)/man3/.'
584		cp -f tzfile.5 '$(DESTDIR)$(MANDIR)/man5/.'
585		cp -f tzselect.8 zdump.8 zic.8 '$(DESTDIR)$(MANDIR)/man8/.'
586
587INSTALL:	ALL install date.1
588		mkdir -p '$(DESTDIR)$(BINDIR)' '$(DESTDIR)$(MANDIR)/man1'
589		cp date '$(DESTDIR)$(BINDIR)/.'
590		cp -f date.1 '$(DESTDIR)$(MANDIR)/man1/.'
591
592# Calculate version number from git, if available.
593# Otherwise, use $(VERSION) unless it is "unknown" and there is already
594# a 'version' file, in which case reuse the existing 'version' contents
595# and append "-dirty" if the contents do not already end in "-dirty".
596version:	$(VERSION_DEPS)
597		{ (type git) >/dev/null 2>&1 && \
598		  V=`git describe --match '[0-9][0-9][0-9][0-9][a-z]*' \
599				--abbrev=7 --dirty` || \
600		  if test '$(VERSION)' = unknown && V=`cat $@`; then \
601		    case $$V in *-dirty);; *) V=$$V-dirty;; esac; \
602		  else \
603		    V='$(VERSION)'; \
604		  fi; } && \
605		printf '%s\n' "$$V" >$@.out
606		mv $@.out $@
607
608# These files can be tailored by setting BACKWARD and PACKRATDATA.
609vanguard.zi main.zi rearguard.zi: $(DSTDATA_ZI_DEPS)
610		$(AWK) -v DATAFORM=`expr $@ : '\(.*\).zi'` -f ziguard.awk \
611		  $(TDATA) $(PACKRATDATA) >$@.out
612		mv $@.out $@
613# This file has a version comment that attempts to capture any tailoring
614# via BACKWARD, DATAFORM, PACKRATDATA, and REDO.
615tzdata.zi:	$(DATAFORM).zi version zishrink.awk
616		version=`sed 1q version` && \
617		  LC_ALL=C $(AWK) \
618		    -v dataform='$(DATAFORM)' \
619		    -v deps='$(DSTDATA_ZI_DEPS) zishrink.awk' \
620		    -v redo='$(REDO)' \
621		    -v version="$$version" \
622		    -f zishrink.awk \
623		    $(DATAFORM).zi >$@.out
624		mv $@.out $@
625
626version.h:	version
627		VERSION=`cat version` && printf '%s\n' \
628		  'static char const PKGVERSION[]="($(PACKAGE)) ";' \
629		  "static char const TZVERSION[]=\"$$VERSION\";" \
630		  'static char const REPORT_BUGS_TO[]="$(BUGEMAIL)";' \
631		  >$@.out
632		mv $@.out $@
633
634zdump:		$(TZDOBJS)
635		$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZDOBJS) $(LDLIBS)
636
637zic:		$(TZCOBJS)
638		$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZCOBJS) $(LDLIBS)
639
640leapseconds:	$(LEAP_DEPS)
641		$(AWK) -v EXPIRES_LINE=$(EXPIRES_LINE) \
642		  -f leapseconds.awk leap-seconds.list >$@.out
643		mv $@.out $@
644
645# Arguments to pass to submakes of install_data.
646# They can be overridden by later submake arguments.
647INSTALLARGS = \
648 BACKWARD='$(BACKWARD)' \
649 DESTDIR='$(DESTDIR)' \
650 LEAPSECONDS='$(LEAPSECONDS)' \
651 PACKRATDATA='$(PACKRATDATA)' \
652 TZDEFAULT='$(TZDEFAULT)' \
653 TZDIR='$(TZDIR)' \
654 ZIC='$(ZIC)'
655
656INSTALL_DATA_DEPS = zic leapseconds tzdata.zi
657
658# 'make install_data' installs one set of TZif files.
659install_data: $(INSTALL_DATA_DEPS)
660		$(ZIC_INSTALL) tzdata.zi
661
662posix_only: $(INSTALL_DATA_DEPS)
663		$(MAKE) $(INSTALLARGS) LEAPSECONDS= install_data
664
665right_only: $(INSTALL_DATA_DEPS)
666		$(MAKE) $(INSTALLARGS) LEAPSECONDS='-L leapseconds' \
667			install_data
668
669# In earlier versions of this makefile, the other two directories were
670# subdirectories of $(TZDIR).  However, this led to configuration errors.
671# For example, with posix_right under the earlier scheme,
672# TZ='right/Australia/Adelaide' got you localtime with leap seconds,
673# but gmtime without leap seconds, which led to problems with applications
674# like sendmail that subtract gmtime from localtime.
675# Therefore, the other two directories are now siblings of $(TZDIR).
676# You must replace all of $(TZDIR) to switch from not using leap seconds
677# to using them, or vice versa.
678right_posix:	right_only
679		rm -fr '$(DESTDIR)$(TZDIR)-leaps'
680		ln -s '$(TZDIR_BASENAME)' '$(DESTDIR)$(TZDIR)-leaps' || \
681		  $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only
682		$(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only
683
684posix_right:	posix_only
685		rm -fr '$(DESTDIR)$(TZDIR)-posix'
686		ln -s '$(TZDIR_BASENAME)' '$(DESTDIR)$(TZDIR)-posix' || \
687		  $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only
688		$(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only
689
690# This obsolescent rule is present for backwards compatibility with
691# tz releases 2014g through 2015g.  It should go away eventually.
692posix_packrat: $(INSTALL_DATA_DEPS)
693		$(MAKE) $(INSTALLARGS) PACKRATDATA=backzone posix_only
694
695zones:		$(REDO)
696
697# dummy.zd is not a real file; it is mentioned here only so that the
698# top-level 'make' does not have a syntax error.
699ZDS = dummy.zd
700# Rule used only by submakes invoked by the $(TZS_NEW) rule.
701# It is separate so that GNU 'make -j' can run instances in parallel.
702$(ZDS): zdump
703		./zdump -i $(TZS_CUTOFF_FLAG) '$(wd)/'$$(expr $@ : '\(.*\).zd') \
704		  >$@
705
706TZS_NEW_DEPS = tzdata.zi zdump zic
707$(TZS_NEW): $(TZS_NEW_DEPS)
708		rm -fr tzs$(TZS_YEAR).dir
709		mkdir tzs$(TZS_YEAR).dir
710		$(zic) -d tzs$(TZS_YEAR).dir tzdata.zi
711		$(AWK) '/^L/{print "Link\t" $$2 "\t" $$3}' \
712		   tzdata.zi | LC_ALL=C sort >$@.out
713		wd=`pwd` && \
714		x=`$(AWK) '/^Z/{print "tzs$(TZS_YEAR).dir/" $$2 ".zd"}' \
715				tzdata.zi \
716			| LC_ALL=C sort -t . -k 2,2` && \
717		set x $$x && \
718		shift && \
719		ZDS=$$* && \
720		$(MAKE) wd="$$wd" TZS_CUTOFF_FLAG="$(TZS_CUTOFF_FLAG)" \
721		  ZDS="$$ZDS" $$ZDS && \
722		sed 's,^TZ=".*\.dir/,TZ=",' $$ZDS >>$@.out
723		rm -fr tzs$(TZS_YEAR).dir
724		mv $@.out $@
725
726# If $(TZS) exists but 'make check_tzs' fails, a maintainer should inspect the
727# failed output and fix the inconsistency, perhaps by running 'make force_tzs'.
728$(TZS):
729		touch $@
730
731force_tzs:	$(TZS_NEW)
732		cp $(TZS_NEW) $(TZS)
733
734libtz.a:	$(LIBOBJS)
735		rm -f $@
736		$(AR) -rc $@ $(LIBOBJS)
737		$(RANLIB) $@
738
739date:		$(DATEOBJS)
740		$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(DATEOBJS) $(LDLIBS)
741
742tzselect:	tzselect.ksh version
743		VERSION=`cat version` && sed \
744			-e 's|#!/bin/bash|#!$(KSHELL)|g' \
745			-e 's|AWK=[^}]*|AWK=$(AWK)|g' \
746			-e 's|\(PKGVERSION\)=.*|\1='\''($(PACKAGE)) '\''|' \
747			-e 's|\(REPORT_BUGS_TO\)=.*|\1=$(BUGEMAIL)|' \
748			-e 's|TZDIR=[^}]*|TZDIR=$(TZDIR)|' \
749			-e 's|\(TZVERSION\)=.*|\1='"$$VERSION"'|' \
750			<$@.ksh >$@.out
751		chmod +x $@.out
752		mv $@.out $@
753
754check:		check_character_set check_white_space check_links \
755		  check_name_lengths check_sorted \
756		  check_tables check_web check_zishrink check_tzs
757
758check_character_set: $(ENCHILADA)
759	test ! '$(UTF8_LOCALE)' || \
760	! printf 'A\304\200B\n' | \
761	  LC_ALL='$(UTF8_LOCALE)' grep -q '^A.B$$' >/dev/null 2>&1 || { \
762		LC_ALL='$(UTF8_LOCALE)' && export LC_ALL && \
763		sharp='#' && \
764		! grep -Env $(SAFE_LINE) $(MANS) date.1 $(MANTXTS) \
765			$(MISC) $(SOURCES) $(WEB_PAGES) \
766			CONTRIBUTING LICENSE README \
767			version tzdata.zi && \
768		! grep -Env $(SAFE_LINE)'|^UNUSUAL_OK_'$(OK_CHAR)'*$$' \
769			Makefile && \
770		! grep -Env $(SAFE_SHARP_LINE) $(TDATA_TO_CHECK) backzone \
771			leapseconds zone.tab && \
772		! grep -Env $(OK_LINE) $(ENCHILADA); \
773	}
774	touch $@
775
776check_white_space: $(ENCHILADA)
777		patfmt=' \t|[\f\r\v]' && pat=`printf "$$patfmt\\n"` && \
778		! grep -En "$$pat" \
779			$$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list)
780		! grep -n '[[:space:]]$$' \
781			$$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list)
782		touch $@
783
784PRECEDES_FILE_NAME = ^(Zone|Link[[:space:]]+[^[:space:]]+)[[:space:]]+
785FILE_NAME_COMPONENT_TOO_LONG = \
786  $(PRECEDES_FILE_NAME)[^[:space:]]*[^/[:space:]]{15}
787
788check_name_lengths: $(TDATA_TO_CHECK) backzone
789		! grep -En '$(FILE_NAME_COMPONENT_TOO_LONG)' \
790			$(TDATA_TO_CHECK) backzone
791		touch $@
792
793CHECK_CC_LIST = { n = split($$1,a,/,/); for (i=2; i<=n; i++) print a[1], a[i]; }
794
795check_sorted: backward backzone iso3166.tab zone.tab zone1970.tab
796		$(AWK) '/^Link/ {print $$3}' backward | LC_ALL=C sort -cu
797		$(AWK) '/^Zone/ {print $$2}' backzone | LC_ALL=C sort -cu
798		touch $@
799
800check_links:	checklinks.awk $(TDATA_TO_CHECK) tzdata.zi
801		$(AWK) -f checklinks.awk $(TDATA_TO_CHECK)
802		$(AWK) -f checklinks.awk tzdata.zi
803		touch $@
804
805check_tables:	checktab.awk $(YDATA) backward $(ZONETABLES)
806		for tab in $(ZONETABLES); do \
807		  test "$$tab" = zone.tab && links='$(BACKWARD)' || links=''; \
808		  $(AWK) -f checktab.awk -v zone_table=$$tab $(YDATA) $$links \
809		    || exit; \
810		done
811		touch $@
812
813check_tzs:	$(TZS) $(TZS_NEW)
814		if test -s $(TZS); then \
815		  diff -u $(TZS) $(TZS_NEW); \
816		else \
817		  cp $(TZS_NEW) $(TZS); \
818		fi
819		touch $@
820
821check_web:	$(CHECK_WEB_PAGES)
822check_theory.html: theory.html
823check_tz-art.html: tz-art.html
824check_tz-how-to.html: tz-how-to.html
825check_tz-link.html: tz-link.html
826check_theory.html check_tz-art.html check_tz-how-to.html check_tz-link.html:
827		$(CURL) -sS --url https://validator.w3.org/nu/ -F out=gnu \
828		    -F file=@$$(expr $@ : 'check_\(.*\)') -o $@.out && \
829		  test ! -s $@.out || { cat $@.out; exit 1; }
830		mv $@.out $@
831
832# Check that zishrink.awk does not alter the data, and that ziguard.awk
833# preserves main-format data.
834check_zishrink: check_zishrink_posix check_zishrink_right
835check_zishrink_posix check_zishrink_right: \
836  zic leapseconds $(PACKRATDATA) $(TDATA) $(DATAFORM).zi tzdata.zi
837		rm -fr $@.dir $@-t.dir $@-shrunk.dir
838		mkdir $@.dir $@-t.dir $@-shrunk.dir
839		case $@ in \
840		  *_right) leap='-L leapseconds';; \
841		  *) leap=;; \
842		esac && \
843		  $(ZIC) $$leap -d $@.dir $(DATAFORM).zi && \
844		  $(ZIC) $$leap -d $@-shrunk.dir tzdata.zi && \
845		  case $(DATAFORM) in \
846		    main) \
847		      $(ZIC) $$leap -d $@-t.dir $(TDATA) && \
848		      $(AWK) '/^Rule/' $(TDATA) | \
849			$(ZIC) $$leap -d $@-t.dir - $(PACKRATDATA) && \
850		      diff -r $@.dir $@-t.dir;; \
851		  esac
852		diff -r $@.dir $@-shrunk.dir
853		rm -fr $@.dir $@-t.dir $@-shrunk.dir
854		touch $@
855
856clean_misc:
857		rm -fr check_*.dir
858		rm -f *.o *.out $(TIME_T_ALTERNATIVES) \
859		  check_* core typecheck_* \
860		  date tzselect version.h zdump zic libtz.a
861clean:		clean_misc
862		rm -fr *.dir tzdb-*/
863		rm -f *.zi $(TZS_NEW)
864
865maintainer-clean: clean
866		@echo 'This command is intended for maintainers to use; it'
867		@echo 'deletes files that may need special tools to rebuild.'
868		rm -f leapseconds version $(MANTXTS) $(TZS) *.asc *.tar.*
869
870names:
871		@echo $(ENCHILADA)
872
873public:		check check_public $(CHECK_TIME_T_ALTERNATIVES) \
874		tarballs signatures
875
876date.1.txt:	date.1
877newctime.3.txt:	newctime.3
878newstrftime.3.txt: newstrftime.3
879newtzset.3.txt:	newtzset.3
880time2posix.3.txt: time2posix.3
881tzfile.5.txt:	tzfile.5
882tzselect.8.txt:	tzselect.8
883zdump.8.txt:	zdump.8
884zic.8.txt:	zic.8
885
886$(MANTXTS):	workman.sh
887		LC_ALL=C sh workman.sh `expr $@ : '\(.*\)\.txt$$'` >$@.out
888		mv $@.out $@
889
890# Set file timestamps deterministically if possible,
891# so that tarballs containing the timestamps are reproducible.
892#
893# '$(SET_TIMESTAMP_N) N DEST A B C ...' sets the timestamp of the
894# file DEST to the maximum of the timestamps of the files A B C ...,
895# plus N if GNU ls and touch are available.
896SET_TIMESTAMP_N = sh -c '\
897  n=$$0 dest=$$1; shift; \
898  touch -cmr `ls -t "$$@" | sed 1q` "$$dest" && \
899  if test $$n != 0 && \
900     lsout=`ls -n --time-style="+%s" "$$dest" 2>/dev/null`; then \
901    set x $$lsout && \
902    touch -cmd @`expr $$7 + $$n` "$$dest"; \
903  else :; fi'
904# If DEST depends on A B C ... in this Makefile, callers should use
905# $(SET_TIMESTAMP_DEP) DEST A B C ..., for the benefit of any
906# downstream 'make' that considers equal timestamps to be out of date.
907# POSIX allows this 'make' behavior, and HP-UX 'make' does it.
908# If all that matters is that the timestamp be reproducible
909# and plausible, use $(SET_TIMESTAMP).
910SET_TIMESTAMP = $(SET_TIMESTAMP_N) 0
911SET_TIMESTAMP_DEP = $(SET_TIMESTAMP_N) 1
912
913# Set the timestamps to those of the git repository, if available,
914# and if the files have not changed since then.
915# This uses GNU 'ls --time-style=+%s', which outputs the seconds count,
916# and GNU 'touch -d@N FILE', where N is the number of seconds since 1970.
917# If git or GNU is absent, don't bother to sync with git timestamps.
918# Also, set the timestamp of each prebuilt file like 'leapseconds'
919# to be the maximum of the files it depends on.
920set-timestamps.out: $(EIGHT_YARDS)
921		rm -f $@
922		if (type git) >/dev/null 2>&1 && \
923		   files=`git ls-files $(EIGHT_YARDS)` && \
924		   touch -md @1 test.out; then \
925		  rm -f test.out && \
926		  for file in $$files; do \
927		    if git diff --quiet $$file; then \
928		      time=`git log -1 --format='tformat:%ct' $$file` && \
929		      touch -cmd @$$time $$file; \
930		    else \
931		      echo >&2 "$$file: warning: does not match repository"; \
932		    fi || exit; \
933		  done; \
934		fi
935		$(SET_TIMESTAMP_DEP) leapseconds $(LEAP_DEPS)
936		for file in `ls $(MANTXTS) | sed 's/\.txt$$//'`; do \
937		  $(SET_TIMESTAMP_DEP) $$file.txt $$file workman.sh || \
938		    exit; \
939		done
940		$(SET_TIMESTAMP_DEP) version $(VERSION_DEPS)
941		$(SET_TIMESTAMP_DEP) tzdata.zi $(TZDATA_ZI_DEPS)
942		touch $@
943set-tzs-timestamp.out: $(TZS)
944		$(SET_TIMESTAMP_DEP) $(TZS) $(TZS_DEPS)
945		touch $@
946
947# The zics below ensure that each data file can stand on its own.
948# We also do an all-files run to catch links to links.
949
950check_public: $(VERSION_DEPS)
951		rm -fr public.dir
952		mkdir public.dir
953		ln $(VERSION_DEPS) public.dir
954		cd public.dir && $(MAKE) CFLAGS='$(GCC_DEBUG_FLAGS)' ALL
955		for i in $(TDATA_TO_CHECK) public.dir/tzdata.zi \
956		    public.dir/vanguard.zi public.dir/main.zi \
957		    public.dir/rearguard.zi; \
958		do \
959		  public.dir/zic -v -d public.dir/zoneinfo $$i 2>&1 || exit; \
960		done
961		public.dir/zic -v -d public.dir/zoneinfo-all $(TDATA_TO_CHECK)
962		:
963		: Also check 'backzone' syntax.
964		rm public.dir/main.zi
965		cd public.dir && $(MAKE) PACKRATDATA=backzone main.zi
966		public.dir/zic -d public.dir/zoneinfo main.zi
967		:
968		rm -fr public.dir
969		touch $@
970
971# Check that the code works under various alternative
972# implementations of time_t.
973check_time_t_alternatives: $(TIME_T_ALTERNATIVES)
974$(TIME_T_ALTERNATIVES_TAIL): $(TIME_T_ALTERNATIVES_HEAD)
975$(TIME_T_ALTERNATIVES): $(VERSION_DEPS)
976		rm -fr $@.dir
977		mkdir $@.dir
978		ln $(VERSION_DEPS) $@.dir
979		case $@ in \
980		  int*32_t) range=-2147483648,2147483648;; \
981		  u*) range=0,4294967296;; \
982		  *) range=-4294967296,4294967296;; \
983		esac && \
984		wd=`pwd` && \
985		zones=`$(AWK) '/^[^#]/ { print $$3 }' <zone1970.tab` && \
986		if test $@ = $(TIME_T_ALTERNATIVES_HEAD); then \
987		  range_target=; \
988		else \
989		  range_target=to$$range.tzs; \
990		fi && \
991		(cd $@.dir && \
992		  $(MAKE) TOPDIR="$$wd/$@.dir" \
993		    CFLAGS='$(CFLAGS) -Dtime_tz='"'$@'" \
994		    REDO='$(REDO)' \
995			D=$$wd/$@.dir \
996		    TZS_YEAR="$$range" TZS_CUTOFF_FLAG="-t $$range" \
997		    install $$range_target) && \
998		test $@ = $(TIME_T_ALTERNATIVES_HEAD) || { \
999		  (cd $(TIME_T_ALTERNATIVES_HEAD).dir && \
1000		    $(MAKE) TOPDIR="$$wd/$@.dir" \
1001		      TZS_YEAR="$$range" TZS_CUTOFF_FLAG="-t $$range" \
1002			D=$$wd/$@.dir \
1003		      to$$range.tzs) && \
1004		  diff -u $(TIME_T_ALTERNATIVES_HEAD).dir/to$$range.tzs \
1005			  $@.dir/to$$range.tzs && \
1006		  if diff -q Makefile Makefile 2>/dev/null; then \
1007		    quiet_option='-q'; \
1008		  else \
1009		    quiet_option=''; \
1010		  fi && \
1011		    diff $$quiet_option -r $(TIME_T_ALTERNATIVES_HEAD).dir/etc \
1012					   $@.dir/etc && \
1013		    diff $$quiet_option -r \
1014		      $(TIME_T_ALTERNATIVES_HEAD).dir/usr/share \
1015		      $@.dir/usr/share; \
1016		}
1017		touch $@
1018
1019TRADITIONAL_ASC = \
1020  tzcode$(VERSION).tar.gz.asc \
1021  tzdata$(VERSION).tar.gz.asc
1022REARGUARD_ASC = \
1023  tzdata$(VERSION)-rearguard.tar.gz.asc
1024ALL_ASC = $(TRADITIONAL_ASC) $(REARGUARD_ASC) \
1025  tzdb-$(VERSION).tar.lz.asc
1026
1027tarballs rearguard_tarballs traditional_tarballs \
1028signatures rearguard_signatures traditional_signatures: \
1029  version set-timestamps.out rearguard.zi
1030		VERSION=`cat version` && \
1031		$(MAKE) AWK='$(AWK)' VERSION="$$VERSION" $@_version
1032
1033# These *_version rules are intended for use if VERSION is set by some
1034# other means.  Ordinarily these rules are used only by the above
1035# non-_version rules, which set VERSION on the 'make' command line.
1036tarballs_version: traditional_tarballs_version rearguard_tarballs_version \
1037  tzdb-$(VERSION).tar.lz
1038rearguard_tarballs_version: \
1039  tzdata$(VERSION)-rearguard.tar.gz
1040traditional_tarballs_version: \
1041  tzcode$(VERSION).tar.gz tzdata$(VERSION).tar.gz
1042signatures_version: $(ALL_ASC)
1043rearguard_signatures_version: $(REARGUARD_ASC)
1044traditional_signatures_version: $(TRADITIONAL_ASC)
1045
1046tzcode$(VERSION).tar.gz: set-timestamps.out
1047		LC_ALL=C && export LC_ALL && \
1048		tar $(TARFLAGS) -cf - \
1049		    $(COMMON) $(DOCS) $(SOURCES) | \
1050		  gzip $(GZIPFLAGS) >$@.out
1051		mv $@.out $@
1052
1053tzdata$(VERSION).tar.gz: set-timestamps.out
1054		LC_ALL=C && export LC_ALL && \
1055		tar $(TARFLAGS) -cf - $(COMMON) $(DATA) $(MISC) | \
1056		  gzip $(GZIPFLAGS) >$@.out
1057		mv $@.out $@
1058
1059tzdata$(VERSION)-rearguard.tar.gz: rearguard.zi set-timestamps.out
1060		rm -fr tzdata$(VERSION)-rearguard.dir
1061		mkdir tzdata$(VERSION)-rearguard.dir
1062		ln $(COMMON) $(DATA) $(MISC) tzdata$(VERSION)-rearguard.dir
1063		cd tzdata$(VERSION)-rearguard.dir && \
1064		  rm -f $(TDATA) $(PACKRATDATA) version
1065		for f in $(TDATA) $(PACKRATDATA); do \
1066		  rearf=tzdata$(VERSION)-rearguard.dir/$$f; \
1067		  $(AWK) -v DATAFORM=rearguard -f ziguard.awk $$f >$$rearf && \
1068		  $(SET_TIMESTAMP_DEP) $$rearf ziguard.awk $$f || exit; \
1069		done
1070		sed '1s/$$/-rearguard/' \
1071		  <version >tzdata$(VERSION)-rearguard.dir/version
1072		: The dummy pacificnew pacifies TZUpdater 2.3.1 and earlier.
1073		TZ=UTC0 touch -mt 202010122253.00 \
1074		  tzdata$(VERSION)-rearguard.dir/pacificnew
1075		touch -cmr version tzdata$(VERSION)-rearguard.dir/version
1076		LC_ALL=C && export LC_ALL && \
1077		  (cd tzdata$(VERSION)-rearguard.dir && \
1078		   tar $(TARFLAGS) -cf - \
1079			$(COMMON) $(DATA) $(MISC) pacificnew | \
1080		     gzip $(GZIPFLAGS)) >$@.out
1081		mv $@.out $@
1082
1083tzdb-$(VERSION).tar.lz: set-timestamps.out set-tzs-timestamp.out
1084		rm -fr tzdb-$(VERSION)
1085		mkdir tzdb-$(VERSION)
1086		ln $(ENCHILADA) tzdb-$(VERSION)
1087		$(SET_TIMESTAMP) tzdb-$(VERSION) tzdb-$(VERSION)/*
1088		LC_ALL=C && export LC_ALL && \
1089		tar $(TARFLAGS) -cf - tzdb-$(VERSION) | lzip -9 >$@.out
1090		mv $@.out $@
1091
1092tzcode$(VERSION).tar.gz.asc: tzcode$(VERSION).tar.gz
1093tzdata$(VERSION).tar.gz.asc: tzdata$(VERSION).tar.gz
1094tzdata$(VERSION)-rearguard.tar.gz.asc: tzdata$(VERSION)-rearguard.tar.gz
1095tzdb-$(VERSION).tar.lz.asc: tzdb-$(VERSION).tar.lz
1096$(ALL_ASC):
1097		$(GPG) --armor --detach-sign $?
1098
1099TYPECHECK_CFLAGS = $(CFLAGS) -DTYPECHECK -D__time_t_defined -D_TIME_T
1100typecheck: typecheck_long_long typecheck_unsigned
1101typecheck_long_long typecheck_unsigned: $(VERSION_DEPS)
1102		rm -fr $@.dir
1103		mkdir $@.dir
1104		ln $(VERSION_DEPS) $@.dir
1105		cd $@.dir && \
1106		  case $@ in \
1107		    *_long_long) i="long long";; \
1108		    *_unsigned ) i="unsigned" ;; \
1109		  esac && \
1110		  typecheck_cflags='' && \
1111		  $(MAKE) \
1112		    CFLAGS="$(TYPECHECK_CFLAGS) \"-Dtime_t=$$i\"" \
1113		    TOPDIR="`pwd`" \
1114		    install
1115		$@.dir/zdump -i -c 1970,1971 Europe/Rome
1116		touch $@
1117
1118zonenames:	tzdata.zi
1119		@$(AWK) '/^Z/ { print $$2 } /^L/ { print $$3 }' tzdata.zi
1120
1121asctime.o:	private.h tzfile.h
1122date.o:		private.h
1123difftime.o:	private.h
1124localtime.o:	private.h tzfile.h
1125strftime.o:	private.h tzfile.h
1126zdump.o:	version.h
1127zic.o:		private.h tzfile.h version.h
1128
1129.PHONY: ALL INSTALL all
1130.PHONY: check check_time_t_alternatives
1131.PHONY: check_web check_zishrink
1132.PHONY: clean clean_misc dummy.zd force_tzs
1133.PHONY: install install_data maintainer-clean names
1134.PHONY: posix_only posix_packrat posix_right public
1135.PHONY: rearguard_signatures rearguard_signatures_version
1136.PHONY: rearguard_tarballs rearguard_tarballs_version
1137.PHONY: right_only right_posix signatures signatures_version
1138.PHONY: tarballs tarballs_version
1139.PHONY: traditional_signatures traditional_signatures_version
1140.PHONY: traditional_tarballs traditional_tarballs_version
1141.PHONY: typecheck
1142.PHONY: zonenames zones
1143.PHONY: $(ZDS)
1144