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Makefile revision 1.26
      1 # This file is in the public domain, so clarified as of
      2 # 2009-05-17 by Arthur David Olson.
      3 
      4 # Package name for the code distribution.
      5 PACKAGE=	tzcode
      6 
      7 # Version numbers of the code and data distributions.
      8 VERSION=	2015a
      9 
     10 # Email address for bug reports.
     11 BUGEMAIL=	tz@iana.org
     12 
     13 # Change the line below for your time zone (after finding the zone you want in
     14 # the time zone files, or adding it to a time zone file).
     15 # Alternately, if you discover you've got the wrong time zone, you can just
     16 #	zic -l rightzone
     17 # to correct things.
     18 # Use the command
     19 #	make zonenames
     20 # to get a list of the values you can use for LOCALTIME.
     21 
     22 LOCALTIME=	GMT
     23 
     24 # If you want something other than Eastern United States time as a template
     25 # for handling POSIX-style time zone environment variables,
     26 # change the line below (after finding the zone you want in the
     27 # time zone files, or adding it to a time zone file).
     28 # (When a POSIX-style environment variable is handled, the rules in the
     29 # template file are used to determine "spring forward" and "fall back" days and
     30 # times; the environment variable itself specifies UT offsets of standard and
     31 # summer time.)
     32 # Alternately, if you discover you've got the wrong time zone, you can just
     33 #	zic -p rightzone
     34 # to correct things.
     35 # Use the command
     36 #	make zonenames
     37 # to get a list of the values you can use for POSIXRULES.
     38 # If you want POSIX compatibility, use "America/New_York".
     39 
     40 POSIXRULES=	America/New_York
     41 
     42 # Also see TZDEFRULESTRING below, which takes effect only
     43 # if the time zone files cannot be accessed.
     44 
     45 # Everything gets put in subdirectories of. . .
     46 
     47 TOPDIR=		/usr/local
     48 
     49 # "Compiled" time zone information is placed in the "TZDIR" directory
     50 # (and subdirectories).
     51 # Use an absolute path name for TZDIR unless you're just testing the software.
     52 
     53 TZDIR_BASENAME=	zoneinfo
     54 TZDIR=		$(TOPDIR)/etc/$(TZDIR_BASENAME)
     55 
     56 # Types to try, as an alternative to time_t.  int64_t should be first.
     57 TIME_T_ALTERNATIVES= int64_t int32_t uint32_t uint64_t
     58 
     59 # The "tzselect", "zic", and "zdump" commands get installed in. . .
     60 
     61 ETCDIR=		$(TOPDIR)/etc
     62 
     63 # If you "make INSTALL", the "date" command gets installed in. . .
     64 
     65 BINDIR=		$(TOPDIR)/bin
     66 
     67 # Manual pages go in subdirectories of. . .
     68 
     69 MANDIR=		$(TOPDIR)/man
     70 
     71 # Library functions are put in an archive in LIBDIR.
     72 
     73 LIBDIR=		$(TOPDIR)/lib
     74 
     75 # If you always want time values interpreted as "seconds since the epoch
     76 # (not counting leap seconds)", use
     77 #	REDO=		posix_only
     78 # below.  If you always want right time values interpreted as "seconds since
     79 # the epoch" (counting leap seconds)", use
     80 #	REDO=		right_only
     81 # below.  If you want both sets of data available, with leap seconds not
     82 # counted normally, use
     83 #	REDO=		posix_right
     84 # below.  If you want both sets of data available, with leap seconds counted
     85 # normally, use
     86 #	REDO=		right_posix
     87 # below.  If you want just POSIX-compatible time values, but with
     88 # out-of-scope and often-wrong data from the file 'backzone', use
     89 #	REDO=		posix_packrat
     90 # POSIX mandates that leap seconds not be counted; for compatibility with it,
     91 # use "posix_only", "posix_right", or "posix_packrat".
     92 
     93 REDO=		posix_right
     94 
     95 # Since "." may not be in PATH...
     96 
     97 YEARISTYPE=	./yearistype
     98 
     99 # Non-default libraries needed to link.
    100 # Add -lintl if you want to use 'gettext' on Solaris.
    101 LDLIBS=
    102 
    103 # Add the following to the end of the "CFLAGS=" line as needed.
    104 #  -DBIG_BANG=-9999999LL if the Big Bang occurred at time -9999999 (see zic.c)
    105 #  -DHAVE_ADJTIME=0 if 'adjtime' does not exist (SVR0?)
    106 #  -DHAVE_DOS_FILE_NAMES if file names have drive specifiers etc. (MS-DOS)
    107 #  -DHAVE_GETTEXT=1 if 'gettext' works (GNU, Linux, Solaris); also see LDLIBS
    108 #  -DHAVE_INCOMPATIBLE_CTIME_R=1 if your system's time.h declares
    109 #	ctime_r and asctime_r incompatibly with the POSIX standard (Solaris 8).
    110 #  -DHAVE_INTTYPES_H=1 if you have a pre-C99 compiler with "inttypes.h"
    111 #  -DHAVE_LINK=0 if your system lacks a link function
    112 #  -DHAVE_LOCALTIME_R=0 if your system lacks a localtime_r function
    113 #  -DHAVE_LOCALTIME_RZ=0 if you do not want zdump to use localtime_rz
    114 #	This defaults to 1 if a working localtime_rz seems to be available.
    115 #	localtime_rz can make zdump significantly faster, but is nonstandard.
    116 #  -DHAVE_SETTIMEOFDAY=0 if settimeofday does not exist (SVR0?)
    117 #  -DHAVE_SETTIMEOFDAY=1 if settimeofday has just 1 arg (SVR4)
    118 #  -DHAVE_SETTIMEOFDAY=2 if settimeofday uses 2nd arg (4.3BSD)
    119 #  -DHAVE_SETTIMEOFDAY=3 if settimeofday ignores 2nd arg (4.4BSD)
    120 #  -DHAVE_STDINT_H=1 if you have a pre-C99 compiler with "stdint.h"
    121 #  -DHAVE_STRFTIME_L=1 if <time.h> declares locale_t and strftime_l
    122 #	This defaults to 0 if _POSIX_VERSION < 200809, 1 otherwise.
    123 #  -DHAVE_SYMLINK=0 if your system lacks the symlink function
    124 #  -DHAVE_SYS_STAT_H=0 if your compiler lacks a "sys/stat.h"
    125 #  -DHAVE_SYS_WAIT_H=0 if your compiler lacks a "sys/wait.h"
    126 #  -DHAVE_TZSET=0 if your system lacks a tzset function
    127 #  -DHAVE_UNISTD_H=0 if your compiler lacks a "unistd.h" (Microsoft C++ 7?)
    128 #  -DHAVE_UTMPX_H=1 if your compiler has a "utmpx.h"
    129 #  -DNO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU=1
    130 #	if you do not want run time warnings about formats that may cause
    131 #	year 2000 grief
    132 #  -Dssize_t=long on ancient hosts that lack ssize_t
    133 #  -DTHREAD_SAFE=1 to make localtime.c thread-safe, as POSIX requires;
    134 #	not needed by the main-program tz code, which is single-threaded.
    135 #	Append other compiler flags as needed, e.g., -pthread on GNU/Linux.
    136 #  -Dtime_tz=\"T\" to use T as the time_t type, rather than the system time_t
    137 #  -DTZ_DOMAIN=\"foo\" to use "foo" for gettext domain name; default is "tz"
    138 #  -DTZ_DOMAINDIR=\"/path\" to use "/path" for gettext directory;
    139 #	the default is system-supplied, typically "/usr/lib/locale"
    140 #  -DTZDEFRULESTRING=\",date/time,date/time\" to default to the specified
    141 #  -DUNINIT_TRAP=1 if reading uninitialized storage can cause problems
    142 #	other than simply getting garbage data
    143 #  -DUSE_LTZ=0 to build zdump with the system time zone library
    144 #	Also set TZDOBJS=zdump.o and CHECK_TIME_T_ALTERNATIVES= below.
    145 #  -DNO_ERROR_IN_DST_GAP=1
    146 #	if you want mktime() not to return an error in the DST gap.
    147 #  -DZIC_MAX_ABBR_LEN_WO_WARN=3
    148 #	(or some other number) to set the maximum time zone abbreviation length
    149 #	that zic will accept without a warning (the default is 6)
    150 #  $(GCC_DEBUG_FLAGS) if you are using GCC and want lots of checking
    151 GCC_DEBUG_FLAGS = -Dlint -g3 -O3 -fno-common -fstrict-aliasing \
    152 	-Wall -Wextra \
    153 	-Wbad-function-cast -Wcast-align -Wcast-qual \
    154 	-Wdeclaration-after-statement \
    155 	-Wformat=2 -Winit-self -Wjump-misses-init \
    156 	-Wmissing-declarations -Wmissing-noreturn -Wmissing-prototypes \
    157 	-Wnested-externs -Wno-address -Wno-cast-qual \
    158 	-Wno-format-nonliteral -Wno-sign-compare -Wno-sign-conversion \
    159 	-Wno-type-limits \
    160 	-Wno-unused-parameter -Woverlength-strings -Wpointer-arith \
    161 	-Wshadow -Wstrict-prototypes -Wsuggest-attribute=const \
    162 	-Wsuggest-attribute=format -Wsuggest-attribute=noreturn \
    163 	-Wsuggest-attribute=pure -Wtrampolines \
    164 	-Wwrite-strings
    165 #
    166 # If you want to use System V compatibility code, add
    167 #	-DUSG_COMPAT
    168 # to the end of the "CFLAGS=" line.  This arrange for "timezone" and "daylight"
    169 # variables to be kept up-to-date by the time conversion functions.  Neither
    170 # "timezone" nor "daylight" is described in X3J11's work.
    171 #
    172 # If your system has a "GMT offset" field in its "struct tm"s
    173 # (or if you decide to add such a field in your system's "time.h" file),
    174 # add the name to a define such as
    175 #	-DTM_GMTOFF=tm_gmtoff
    176 # to the end of the "CFLAGS=" line.  If not defined, the code attempts to
    177 # guess TM_GMTOFF from other macros; define NO_TM_GMTOFF to suppress this.
    178 # Similarly, if your system has a "zone abbreviation" field, define
    179 #	-DTM_ZONE=tm_zone
    180 # and define NO_TM_ZONE to suppress any guessing.  These two fields are not
    181 # required by POSIX, but are widely available on GNU/Linux and BSD systems.
    182 #
    183 # If you want functions that were inspired by early versions of X3J11's work,
    184 # add
    185 #	-DSTD_INSPIRED
    186 # to the end of the "CFLAGS=" line.  This arranges for the functions
    187 # "tzsetwall", "offtime", "timelocal", "timegm", "timeoff",
    188 # "posix2time", and "time2posix" to be added to the time conversion library.
    189 # "tzsetwall" is like "tzset" except that it arranges for local wall clock
    190 # time (rather than the time specified in the TZ environment variable)
    191 # to be used.
    192 # "offtime" is like "gmtime" except that it accepts a second (long) argument
    193 # that gives an offset to add to the time_t when converting it.
    194 # "timelocal" is equivalent to "mktime".
    195 # "timegm" is like "timelocal" except that it turns a struct tm into
    196 # a time_t using UT (rather than local time as "timelocal" does).
    197 # "timeoff" is like "timegm" except that it accepts a second (long) argument
    198 # that gives an offset to use when converting to a time_t.
    199 # "posix2time" and "time2posix" are described in an included manual page.
    200 # X3J11's work does not describe any of these functions.
    201 # Sun has provided "tzsetwall", "timelocal", and "timegm" in SunOS 4.0.
    202 # These functions may well disappear in future releases of the time
    203 # conversion package.
    204 #
    205 # If you don't want functions that were inspired by NetBSD, add
    206 #	-DNETBSD_INSPIRED=0
    207 # to the end of the "CFLAGS=" line.  Otherwise, the functions
    208 # "localtime_rz", "mktime_z", "tzalloc", and "tzfree" are added to the
    209 # time library, and if STD_INSPIRED is also defined the functions
    210 # "posix2time_z" and "time2posix_z" are added as well.
    211 # The functions ending in "_z" (or "_rz") are like their unsuffixed
    212 # (or suffixed-by-"_r") counterparts, except with an extra first
    213 # argument of opaque type timezone_t that specifies the time zone.
    214 # "tzalloc" allocates a timezone_t value, and "tzfree" frees it.
    215 #
    216 # If you want to allocate state structures in localtime, add
    217 #	-DALL_STATE
    218 # to the end of the "CFLAGS=" line.  Storage is obtained by calling malloc.
    219 #
    220 # If you want an "altzone" variable (a la System V Release 3.1), add
    221 #	-DALTZONE
    222 # to the end of the "CFLAGS=" line.
    223 # This variable is not described in X3J11's work.
    224 #
    225 # NIST-PCTS:151-2, Version 1.4, (1993-12-03) is a test suite put
    226 # out by the National Institute of Standards and Technology
    227 # which claims to test C and Posix conformance.  If you want to pass PCTS, add
    228 #	-DPCTS
    229 # to the end of the "CFLAGS=" line.
    230 #
    231 # If you want strict compliance with XPG4 as of 1994-04-09, add
    232 #	-DXPG4_1994_04_09
    233 # to the end of the "CFLAGS=" line.  This causes "strftime" to always return
    234 # 53 as a week number (rather than 52 or 53) for those days in January that
    235 # before the first Monday in January when a "%V" format is used and January 1
    236 # falls on a Friday, Saturday, or Sunday.
    237 
    238 CFLAGS=
    239 
    240 # Linker flags.  Default to $(LFLAGS) for backwards compatibility
    241 # to tzcode2012h and earlier.
    242 
    243 LDFLAGS=	$(LFLAGS)
    244 
    245 zic=		./zic
    246 ZIC=		$(zic) $(ZFLAGS)
    247 
    248 ZFLAGS=
    249 
    250 # The name of a Posix-compliant 'awk' on your system.
    251 AWK=		awk
    252 
    253 # The full path name of a Posix-compliant shell, preferably one that supports
    254 # the Korn shell's 'select' statement as an extension.
    255 # These days, Bash is the most popular.
    256 # It should be OK to set this to /bin/sh, on platforms where /bin/sh
    257 # lacks 'select' or doesn't completely conform to Posix, but /bin/bash
    258 # is typically nicer if it works.
    259 KSHELL=		/bin/bash
    260 
    261 # The path where SGML DTDs are kept and the catalog file(s) to use when
    262 # validating.  The default is appropriate for Ubuntu 13.10.
    263 SGML_TOPDIR= /usr
    264 SGML_DTDDIR= $(SGML_TOPDIR)/share/xml/w3c-sgml-lib/schema/dtd
    265 SGML_SEARCH_PATH= $(SGML_DTDDIR)/REC-html401-19991224
    266 SGML_CATALOG_FILES= \
    267   $(SGML_TOPDIR)/share/doc/w3-recs/html/www.w3.org/TR/1999/REC-html401-19991224/HTML4.cat
    268 
    269 # The name, arguments and environment of a program to validate your web pages.
    270 # See <http://www.jclark.com/sp/> for a validator, and
    271 # <http://validator.w3.org/source/> for a validation library.
    272 VALIDATE = nsgmls
    273 VALIDATE_FLAGS = -s -B -wall -wno-unused-param
    274 VALIDATE_ENV = \
    275   SGML_CATALOG_FILES=$(SGML_CATALOG_FILES) \
    276   SGML_SEARCH_PATH=$(SGML_SEARCH_PATH) \
    277   SP_CHARSET_FIXED=YES \
    278   SP_ENCODING=UTF-8
    279 
    280 # This expensive test requires USE_LTZ.
    281 # To suppress it, define this macro to be empty.
    282 CHECK_TIME_T_ALTERNATIVES = check_time_t_alternatives
    283 
    284 # SAFE_CHAR is a regular expression that matches a safe character.
    285 # Some parts of this distribution are limited to safe characters;
    286 # others can use any UTF-8 character.
    287 # For now, the safe characters are a safe subset of ASCII.
    288 # The caller must set the shell variable 'sharp' to the character '#',
    289 # since Makefile macros cannot contain '#'.
    290 # TAB_CHAR is a single tab character, in single quotes.
    291 TAB_CHAR=	'	'
    292 SAFE_CHARSET1=	$(TAB_CHAR)' !\"'$$sharp'$$%&'\''()*+,./0123456789:;<=>?@'
    293 SAFE_CHARSET2=	'ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\^_`'
    294 SAFE_CHARSET3=	'abcdefghijklmnopqrstuvwxyz{|}~'
    295 SAFE_CHARSET=	]$(SAFE_CHARSET1)$(SAFE_CHARSET2)$(SAFE_CHARSET3)-
    296 SAFE_CHAR=	'['$(SAFE_CHARSET)']'
    297 # NONSYM_CHAR is a regular expression that matches any character
    298 # except for a small number of symbols, where we prefer to stick with
    299 # ASCII renderings for the convenience of maintainers whose text editors
    300 # mishandle UTF-8 by default (e.g., XEmacs 21.4.22).
    301 NONSYM_CHAR=	'[^]'
    302 
    303 # SAFE_LINE matches a line of safe characters.
    304 # SAFE_SHARP_LINE is similar, except any character can follow '#';
    305 # this is so that comments can contain non-ASCII characters.
    306 # NONSYM_LINE matches a line of non-symbols.
    307 # VALID_LINE matches a line of any validly-encoded characters.
    308 SAFE_LINE=	'^'$(SAFE_CHAR)'*$$'
    309 SAFE_SHARP_LINE='^'$(SAFE_CHAR)'*('$$sharp$(NONSYM_CHAR)'*)?$$'
    310 NONSYM_LINE=	'^'$(NONSYM_CHAR)'*$$'
    311 VALID_LINE=	'^.*$$'
    312 
    313 # Flags to give 'tar' when making a distribution.
    314 # Try to use flags appropriate for GNU tar.
    315 GNUTARFLAGS=	--numeric-owner --owner=0 --group=0 --mode=go+u,go-w
    316 TARFLAGS=	`if tar $(GNUTARFLAGS) --version >/dev/null 2>&1; \
    317 		 then echo $(GNUTARFLAGS); \
    318 		 else :; \
    319 		 fi`
    320 
    321 # Flags to give 'gzip' when making a distribution.
    322 GZIPFLAGS=	-9 ${GZIP_N_FLAG}
    323 
    324 ###############################################################################
    325 
    326 cc=		cc
    327 CC=		$(cc) -DTZDIR=\"$(TZDIR)\"
    328 
    329 AR=		ar
    330 
    331 # ':' on typical hosts; 'ranlib' on the ancient hosts that still need ranlib.
    332 RANLIB=		:
    333 
    334 TZCOBJS=	zic.o scheck.o ialloc.o
    335 TZDOBJS=	zdump.o localtime.o asctime.o
    336 DATEOBJS=	date.o localtime.o strftime.o asctime.o
    337 LIBSRCS=	localtime.c asctime.c difftime.c
    338 LIBOBJS=	localtime.o asctime.o difftime.o
    339 HEADERS=	tzfile.h private.h
    340 NONLIBSRCS=	zic.c zdump.c scheck.c ialloc.c
    341 NEWUCBSRCS=	date.c strftime.c
    342 SOURCES=	$(HEADERS) $(LIBSRCS) $(NONLIBSRCS) $(NEWUCBSRCS) \
    343 			tzselect.ksh workman.sh
    344 MANS=		newctime.3 newstrftime.3 newtzset.3 time2posix.3 \
    345 			tzfile.5 tzselect.8 zic.8 zdump.8
    346 MANTXTS=	newctime.3.txt newstrftime.3.txt newtzset.3.txt \
    347 			time2posix.3.txt \
    348 			tzfile.5.txt tzselect.8.txt zic.8.txt zdump.8.txt \
    349 			date.1.txt
    350 COMMON=		CONTRIBUTING Makefile NEWS README Theory
    351 WEB_PAGES=	tz-art.htm tz-link.htm
    352 DOCS=		$(MANS) date.1 $(MANTXTS) $(WEB_PAGES)
    353 PRIMARY_YDATA=	africa antarctica asia australasia \
    354 		europe northamerica southamerica
    355 YDATA=		$(PRIMARY_YDATA) pacificnew etcetera backward
    356 NDATA=		systemv factory
    357 TDATA=		$(YDATA) $(NDATA)
    358 ZONETABLES=	zone1970.tab zone.tab
    359 TABDATA=	iso3166.tab leapseconds $(ZONETABLES)
    360 LEAP_DEPS=	leapseconds.awk leap-seconds.list
    361 DATA=		$(YDATA) $(NDATA) backzone $(TABDATA) \
    362 			leap-seconds.list yearistype.sh
    363 AWK_SCRIPTS=	checklinks.awk checktab.awk leapseconds.awk
    364 MISC=		$(AWK_SCRIPTS) zoneinfo2tdf.pl
    365 ENCHILADA=	$(COMMON) $(DOCS) $(SOURCES) $(DATA) $(MISC)
    366 
    367 # And for the benefit of csh users on systems that assume the user
    368 # shell should be used to handle commands in Makefiles. . .
    369 
    370 SHELL=		/bin/sh
    371 
    372 all:		tzselect zic zdump libtz.a $(TABDATA)
    373 
    374 ALL:		all date
    375 
    376 install:	all $(DATA) $(REDO) $(MANS)
    377 		mkdir -p $(DESTDIR)$(ETCDIR) $(DESTDIR)$(TZDIR) \
    378 			$(DESTDIR)$(LIBDIR) \
    379 			$(DESTDIR)$(MANDIR)/man3 $(DESTDIR)$(MANDIR)/man5 \
    380 			$(DESTDIR)$(MANDIR)/man8
    381 		$(ZIC) -y $(YEARISTYPE) \
    382 			-d $(DESTDIR)$(TZDIR) -l $(LOCALTIME) -p $(POSIXRULES)
    383 		cp -f iso3166.tab $(ZONETABLES) $(DESTDIR)$(TZDIR)/.
    384 		cp tzselect zic zdump $(DESTDIR)$(ETCDIR)/.
    385 		cp libtz.a $(DESTDIR)$(LIBDIR)/.
    386 		$(RANLIB) $(DESTDIR)$(LIBDIR)/libtz.a
    387 		cp -f newctime.3 newtzset.3 $(DESTDIR)$(MANDIR)/man3/.
    388 		cp -f tzfile.5 $(DESTDIR)$(MANDIR)/man5/.
    389 		cp -f tzselect.8 zdump.8 zic.8 $(DESTDIR)$(MANDIR)/man8/.
    390 
    391 INSTALL:	ALL install date.1
    392 		mkdir -p $(DESTDIR)$(BINDIR) $(DESTDIR)$(MANDIR)/man1
    393 		cp date $(DESTDIR)$(BINDIR)/.
    394 		cp -f date.1 $(DESTDIR)$(MANDIR)/man1/.
    395 
    396 version.h:
    397 		(echo 'static char const PKGVERSION[]="($(PACKAGE)) ";' && \
    398 		 echo 'static char const TZVERSION[]="$(VERSION)";' && \
    399 		 echo 'static char const REPORT_BUGS_TO[]="$(BUGEMAIL)";') >$@
    400 
    401 zdump:		$(TZDOBJS)
    402 		$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZDOBJS) $(LDLIBS)
    403 
    404 zic:		$(TZCOBJS) yearistype
    405 		$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZCOBJS) $(LDLIBS)
    406 
    407 yearistype:	yearistype.sh
    408 		cp yearistype.sh yearistype
    409 		chmod +x yearistype
    410 
    411 leapseconds:	$(LEAP_DEPS)
    412 		$(AWK) -f leapseconds.awk leap-seconds.list >$@
    413 
    414 posix_only:	zic $(TDATA)
    415 		$(ZIC) -y $(YEARISTYPE) -d $(DESTDIR)$(TZDIR) \
    416 			-L /dev/null $(TDATA)
    417 
    418 right_only:	zic leapseconds $(TDATA)
    419 		$(ZIC) -y $(YEARISTYPE) -d $(DESTDIR)$(TZDIR) \
    420 			-L leapseconds $(TDATA)
    421 
    422 # In earlier versions of this makefile, the other two directories were
    423 # subdirectories of $(TZDIR).  However, this led to configuration errors.
    424 # For example, with posix_right under the earlier scheme,
    425 # TZ='right/Australia/Adelaide' got you localtime with leap seconds,
    426 # but gmtime without leap seconds, which led to problems with applications
    427 # like sendmail that subtract gmtime from localtime.
    428 # Therefore, the other two directories are now siblings of $(TZDIR).
    429 # You must replace all of $(TZDIR) to switch from not using leap seconds
    430 # to using them, or vice versa.
    431 right_posix:	right_only leapseconds
    432 		rm -fr $(DESTDIR)$(TZDIR)-leaps
    433 		ln -s $(TZDIR_BASENAME) $(DESTDIR)$(TZDIR)-leaps || \
    434 		  $(ZIC) -y $(YEARISTYPE) -d $(DESTDIR)$(TZDIR)-leaps \
    435 			-L leapseconds $(TDATA)
    436 		$(ZIC) -y $(YEARISTYPE) -d $(DESTDIR)$(TZDIR)-posix \
    437 			-L /dev/null $(TDATA)
    438 
    439 posix_right:	posix_only leapseconds
    440 		rm -fr $(DESTDIR)$(TZDIR)-posix
    441 		ln -s $(TZDIR_BASENAME) $(DESTDIR)$(TZDIR)-posix || \
    442 		  $(ZIC) -y $(YEARISTYPE) -d $(DESTDIR)$(TZDIR)-posix \
    443 			-L /dev/null $(TDATA)
    444 		$(ZIC) -y $(YEARISTYPE) -d $(DESTDIR)$(TZDIR)-leaps \
    445 			-L leapseconds $(TDATA)
    446 
    447 posix_packrat:	posix_only backzone
    448 		$(AWK) '/^Rule/' $(TDATA) | \
    449 		  $(ZIC) -y $(YEARISTYPE) -d $(DESTDIR)$(TZDIR) \
    450 			-L /dev/null - backzone
    451 
    452 zones:		$(REDO)
    453 
    454 libtz.a:	$(LIBOBJS)
    455 		$(AR) ru $@ $(LIBOBJS)
    456 		$(RANLIB) $@
    457 
    458 date:		$(DATEOBJS)
    459 		$(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(DATEOBJS) $(LDLIBS)
    460 
    461 tzselect:	tzselect.ksh
    462 		sed \
    463 			-e 's|#!/bin/bash|#!$(KSHELL)|g' \
    464 			-e 's|AWK=[^}]*|AWK=$(AWK)|g' \
    465 			-e 's|\(PKGVERSION\)=.*|\1='\''($(PACKAGE)) '\''|' \
    466 			-e 's|\(REPORT_BUGS_TO\)=.*|\1=$(BUGEMAIL)|' \
    467 			-e 's|TZDIR=[^}]*|TZDIR=$(TZDIR)|' \
    468 			-e 's|\(TZVERSION\)=.*|\1=$(VERSION)|' \
    469 			<$? >$@
    470 		chmod +x $@
    471 
    472 check:		check_character_set check_white_space check_links check_sorted \
    473 		  check_tables check_web
    474 
    475 check_character_set: $(ENCHILADA)
    476 		LC_ALL=en_US.utf8 && export LC_ALL && \
    477 		sharp='#' && \
    478 		! grep -Env $(SAFE_LINE) $(MANS) date.1 $(MANTXTS) \
    479 			$(MISC) $(SOURCES) $(WEB_PAGES) && \
    480 		! grep -Env $(SAFE_SHARP_LINE) $(TDATA) backzone \
    481 			iso3166.tab leapseconds yearistype.sh zone.tab && \
    482 		test $$(grep -Ecv $(SAFE_SHARP_LINE) Makefile) -eq 1 && \
    483 		! grep -Env $(NONSYM_LINE) CONTRIBUTING NEWS README Theory \
    484 			$(MANS) date.1 zone1970.tab && \
    485 		! grep -Env $(VALID_LINE) $(ENCHILADA)
    486 
    487 check_white_space: $(ENCHILADA)
    488 		! grep -En ' '$(TAB_CHAR)"|$$(printf '[\f\r\v]')" $(ENCHILADA)
    489 		! grep -n '[[:space:]]$$' \
    490 			$$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list)
    491 
    492 CHECK_CC_LIST = { n = split($$1,a,/,/); for (i=2; i<=n; i++) print a[1], a[i]; }
    493 
    494 check_sorted: backward backzone iso3166.tab zone.tab zone1970.tab
    495 		$(AWK) '/^Link/ {print $$3}' backward | LC_ALL=C sort -cu
    496 		$(AWK) '/^Zone/ {print $$2}' backzone | LC_ALL=C sort -cu
    497 		$(AWK) '/^[^#]/ {print $$1}' iso3166.tab | LC_ALL=C sort -cu
    498 		$(AWK) '/^[^#]/ {print $$1}' zone.tab | LC_ALL=C sort -c
    499 		$(AWK) '/^[^#]/ {print substr($$0, 1, 2)}' zone1970.tab | \
    500 		  LC_ALL=C sort -c
    501 		$(AWK) '/^[^#]/ $(CHECK_CC_LIST)' zone1970.tab | \
    502 		  LC_ALL=C sort -cu
    503 
    504 check_links:	checklinks.awk $(TDATA)
    505 		$(AWK) -f checklinks.awk $(TDATA)
    506 
    507 check_tables:	checktab.awk $(PRIMARY_YDATA) $(ZONETABLES)
    508 		for tab in $(ZONETABLES); do \
    509 		  $(AWK) -f checktab.awk -v zone_table=$$tab $(PRIMARY_YDATA) \
    510 		    || exit; \
    511 		done
    512 
    513 check_web:	$(WEB_PAGES)
    514 		$(VALIDATE_ENV) $(VALIDATE) $(VALIDATE_FLAGS) $(WEB_PAGES)
    515 
    516 clean_misc:
    517 		rm -f core *.o *.out \
    518 		  date tzselect version.h zdump zic yearistype libtz.a
    519 clean:		clean_misc
    520 		rm -fr tzpublic
    521 
    522 maintainer-clean: clean
    523 		@echo 'This command is intended for maintainers to use; it'
    524 		@echo 'deletes files that may need special tools to rebuild.'
    525 		rm -f leapseconds $(MANTXTS) *.asc *.tar.gz
    526 
    527 names:
    528 		@echo $(ENCHILADA)
    529 
    530 public:		check check_public $(CHECK_TIME_T_ALTERNATIVES) \
    531 		tarballs signatures
    532 
    533 date.1.txt:	date.1
    534 newctime.3.txt:	newctime.3
    535 newstrftime.3.txt: newstrftime.3
    536 newtzset.3.txt:	newtzset.3
    537 time2posix.3.txt: time2posix.3
    538 tzfile.5.txt:	tzfile.5
    539 tzselect.8.txt:	tzselect.8
    540 zdump.8.txt:	zdump.8
    541 zic.8.txt:	zic.8
    542 
    543 $(MANTXTS):	workman.sh
    544 		LC_ALL=C sh workman.sh `expr $@ : '\(.*\)\.txt$$'` >$@
    545 
    546 # Set the time stamps to those of the git repository, if available,
    547 # and if the files have not changed since then.
    548 # This uses GNU 'touch' syntax 'touch -d@N FILE',
    549 # where N is the number of seconds since 1970.
    550 # If git or GNU 'touch' is absent, don't bother to sync with git timestamps.
    551 # Also, set the timestamp of each prebuilt file like 'leapseconds'
    552 # to be the maximum of the files it depends on.
    553 set-timestamps.out: $(ENCHILADA)
    554 		rm -f $@
    555 		if files=`git ls-files $(ENCHILADA)` && \
    556 		   touch -md @1 test.out; then \
    557 		  rm -f test.out && \
    558 		  for file in $$files; do \
    559 		    if git diff --quiet $$file; then \
    560 		      time=`git log -1 --format='tformat:%ct' $$file` && \
    561 		      touch -cmd @$$time $$file; \
    562 		    else \
    563 		      echo >&2 "$$file: warning: does not match repository"; \
    564 		    fi || exit; \
    565 		  done; \
    566 		fi
    567 		touch -cmr `ls -t $(LEAP_DEPS) | sed 1q` leapseconds
    568 		for file in `ls $(MANTXTS) | sed 's/\.txt$$//'`; do \
    569 		  touch -cmr `ls -t $$file workman.sh | sed 1q` $$file.txt || \
    570 		    exit; \
    571 		done
    572 		touch $@
    573 
    574 # The zics below ensure that each data file can stand on its own.
    575 # We also do an all-files run to catch links to links.
    576 
    577 check_public:	$(ENCHILADA)
    578 		make maintainer-clean
    579 		make "CFLAGS=$(GCC_DEBUG_FLAGS)" $(ENCHILADA) all
    580 		mkdir tzpublic
    581 		for i in $(TDATA) ; do \
    582 		  $(zic) -v -d tzpublic $$i 2>&1 || exit; \
    583 		done
    584 		$(zic) -v -d tzpublic $(TDATA)
    585 		rm -fr tzpublic
    586 
    587 # Check that the code works under various alternative
    588 # implementations of time_t.
    589 check_time_t_alternatives:
    590 		if diff -q Makefile Makefile 2>/dev/null; then \
    591 		  quiet_option='-q'; \
    592 		else \
    593 		  quiet_option=''; \
    594 		fi && \
    595 		zones=`$(AWK) '/^[^#]/ { print $$3 }' <zone1970.tab` && \
    596 		for type in $(TIME_T_ALTERNATIVES); do \
    597 		  mkdir -p tzpublic/$$type && \
    598 		  make clean_misc && \
    599 		  make TOPDIR=`pwd`/tzpublic/$$type \
    600 		    CFLAGS='$(CFLAGS) -Dtime_tz='"'$$type'" \
    601 		    REDO='$(REDO)' \
    602 		    install && \
    603 		  diff $$quiet_option -r \
    604 		    tzpublic/int64_t/etc/zoneinfo \
    605 		    tzpublic/$$type/etc/zoneinfo && \
    606 		  case $$type in \
    607 		  int32_t) range=-2147483648,2147483647;; \
    608 		  uint32_t) range=0,4294967296;; \
    609 		  int64_t) continue;; \
    610 		  *u*) range=0,10000000000;; \
    611 		  *) range=-10000000000,10000000000;; \
    612 		  esac && \
    613 		  echo checking $$type zones ... && \
    614 		  tzpublic/int64_t/etc/zdump -V -t $$range $$zones \
    615 		      >tzpublic/int64_t.out && \
    616 		  tzpublic/$$type/etc/zdump -V -t $$range $$zones \
    617 		      >tzpublic/$$type.out && \
    618 		  diff -u tzpublic/int64_t.out tzpublic/$$type.out \
    619 		    || exit; \
    620 		done
    621 		rm -fr tzpublic
    622 
    623 tarballs:	tzcode$(VERSION).tar.gz tzdata$(VERSION).tar.gz
    624 
    625 tzcode$(VERSION).tar.gz: set-timestamps.out
    626 		LC_ALL=C && export LC_ALL && \
    627 		tar $(TARFLAGS) -cf - \
    628 		    $(COMMON) $(DOCS) $(SOURCES) | \
    629 		  ${TOOL_GZIP} $(GZIPFLAGS) > $@
    630 
    631 tzdata$(VERSION).tar.gz: set-timestamps.out
    632 		LC_ALL=C && export LC_ALL && \
    633 		tar $(TARFLAGS) -cf - $(COMMON) $(DATA) $(MISC) | \
    634 		  ${TOOL_GZIP} $(GZIPFLAGS) > $@
    635 
    636 signatures:	tzcode$(VERSION).tar.gz.asc tzdata$(VERSION).tar.gz.asc
    637 
    638 tzcode$(VERSION).tar.gz.asc: tzcode$(VERSION).tar.gz
    639 		gpg --armor --detach-sign $?
    640 
    641 tzdata$(VERSION).tar.gz.asc: tzdata$(VERSION).tar.gz
    642 		gpg --armor --detach-sign $?
    643 
    644 typecheck:
    645 		make clean
    646 		for i in "long long" unsigned; \
    647 		do \
    648 			make CFLAGS="-DTYPECHECK -D__time_t_defined -D_TIME_T \"-Dtime_t=$$i\"" ; \
    649 			./zdump -v Europe/Rome ; \
    650 			make clean ; \
    651 		done
    652 
    653 zonenames:	$(TDATA)
    654 		@$(AWK) '/^Zone/ { print $$2 } /^Link/ { print $$3 }' $(TDATA)
    655 
    656 asctime.o:	private.h tzfile.h
    657 date.o:		private.h
    658 difftime.o:	private.h
    659 ialloc.o:	private.h
    660 localtime.o:	private.h tzfile.h
    661 scheck.o:	private.h
    662 strftime.o:	private.h tzfile.h
    663 zdump.o:	version.h
    664 zic.o:		private.h tzfile.h version.h
    665 
    666 .KEEP_STATE:
    667 
    668 .PHONY: ALL INSTALL all
    669 .PHONY: check check_character_set check_links
    670 .PHONY: check_public check_sorted check_tables
    671 .PHONY: check_time_t_alternatives check_web check_white_space clean clean_misc
    672 .PHONY: install maintainer-clean names posix_packrat posix_only posix_right
    673 .PHONY: public right_only right_posix signatures tarballs typecheck
    674 .PHONY: zonenames zones
    675