1# Make and install tzdb code and data. 2# This file is in the public domain, so clarified as of 3# 2009-05-17 by Arthur David Olson. 4# Request POSIX conformance; this must be the first non-comment line. 5.POSIX: 6# On older platforms you may need to scrounge for POSIX conformance. 7# For example, on Solaris 10 (2005) with Sun Studio 12 aka Sun C 5.9 (2007), 8# use 'PATH=/usr/xpg4/bin:$PATH make CC=c99'. 9 10# To affect how this Makefile works, you can run a shell script like this: 11# 12# #!/bin/sh 13# make CC='gcc -std=gnu23' "$@" 14# 15# This example script is appropriate for a circa 2024 GNU/Linux system 16# where a non-default setting enables this package's optional use of C23. 17# 18# Alternatively, you can simply edit this Makefile to tailor the following 19# macro definitions. 20 21############################################################################### 22# Start of macros that one plausibly might want to tailor. 23 24# Package name for the code distribution. 25PACKAGE= tzcode 26 27# Version number for the distribution, overridden in the 'tarballs' rule below. 28VERSION= unknown 29 30# Email address for bug reports. 31BUGEMAIL= tz@iana.org 32 33# DATAFORM selects the data format. 34# Available formats represent essentially the same data, albeit 35# possibly with minor discrepancies that users are not likely to notice. 36# To get new features and the best data right away, use: 37# DATAFORM= vanguard 38# To wait a while before using new features, to give downstream users 39# time to upgrade zic (the default), use: 40# DATAFORM= main 41# To wait even longer for new features, use: 42# DATAFORM= rearguard 43# Rearguard users might also want "ZFLAGS = -b fat"; see below. 44DATAFORM= main 45 46# Change the line below for your timezone (after finding the one you want in 47# one of the $(TDATA) source files, or adding it to a source file). 48# Alternatively, if you discover you've got the wrong timezone, you can just 49# 'zic -l -' to remove it, or 'zic -l rightzone' to change it. 50# Use the command 51# make zonenames 52# to get a list of the values you can use for LOCALTIME. 53 54LOCALTIME= Factory 55 56# The POSIXRULES macro controls interpretation of POSIX-like TZ 57# settings like TZ='EET-2EEST' that lack DST transition rules. 58# If POSIXRULES is '-', no template is installed; this is the default. 59# Any other value for POSIXRULES is obsolete and should not be relied on, as: 60# * It does not work correctly in popular implementations such as GNU/Linux. 61# * It does not work even in tzcode, except for historical timestamps 62# that precede the last explicit transition in the POSIXRULES file. 63# Hence it typically does not work for current and future timestamps. 64# If, despite the above, you want a template for handling these settings, 65# you can change the line below (after finding the timezone you want in the 66# one of the $(TDATA) source files, or adding it to a source file). 67# Alternatively, if you discover you've got the wrong timezone, you can just 68# 'zic -p -' to remove it, or 'zic -p rightzone' to change it. 69# Use the command 70# make zonenames 71# to get a list of the values you can use for POSIXRULES. 72 73POSIXRULES= - 74 75# Also see TZDEFRULESTRING below, which takes effect only 76# if POSIXRULES is '-' or if the template file cannot be accessed. 77 78 79# Installation locations. 80# 81# The defaults are suitable for Debian, except that if REDO is 82# posix_right or right_posix then files that Debian puts under 83# /usr/share/zoneinfo/posix and /usr/share/zoneinfo/right are instead 84# put under /usr/share/zoneinfo-posix and /usr/share/zoneinfo-leaps, 85# respectively. Problems with the Debian approach are discussed in 86# the commentary for the right_posix rule (below). 87 88# Destination directory, which can be used for staging. 89# 'make DESTDIR=/stage install' installs under /stage (e.g., to 90# /stage/etc/localtime instead of to /etc/localtime). Files under 91# /stage are not intended to work as-is, but can be copied by hand to 92# the root directory later. If DESTDIR is empty, 'make install' does 93# not stage, but installs directly into production locations. 94DESTDIR = 95 96# Everything is installed into subdirectories of TOPDIR, and used there. 97# TOPDIR should be empty (meaning the root directory), 98# or a directory name that does not end in "/". 99# TOPDIR should be empty or an absolute name unless you're just testing. 100TOPDIR = 101 102# The default local timezone is taken from the file TZDEFAULT. 103TZDEFAULT = $(TOPDIR)/etc/localtime 104 105# The subdirectory containing installed program and data files, and 106# likewise for installed files that can be shared among architectures. 107# These should be relative file names. 108USRDIR = usr 109USRSHAREDIR = $(USRDIR)/share 110 111# "Compiled" timezone information is placed in the "TZDIR" directory 112# (and subdirectories). 113# TZDIR_BASENAME should not contain "/" and should not be ".", ".." or empty. 114TZDIR_BASENAME= zoneinfo 115TZDIR = $(TOPDIR)/$(USRSHAREDIR)/$(TZDIR_BASENAME) 116 117# The "tzselect" and (if you do "make INSTALL") "date" commands go in: 118BINDIR = $(TOPDIR)/$(USRDIR)/bin 119 120# The "zdump" command goes in: 121ZDUMPDIR = $(BINDIR) 122 123# The "zic" command goes in: 124ZICDIR = $(TOPDIR)/$(USRDIR)/sbin 125 126# Manual pages go in subdirectories of. . . 127MANDIR = $(TOPDIR)/$(USRSHAREDIR)/man 128 129# Library functions are put in an archive in LIBDIR. 130LIBDIR = $(TOPDIR)/$(USRDIR)/lib 131 132 133# Types to try, as an alternative to time_t. 134TIME_T_ALTERNATIVES = $(TIME_T_ALTERNATIVES_HEAD) $(TIME_T_ALTERNATIVES_TAIL) 135TIME_T_ALTERNATIVES_HEAD = int_least64_t.ck 136TIME_T_ALTERNATIVES_TAIL = int_least32_t.ck uint_least32_t.ck \ 137 uint_least64_t.ck 138 139# What kind of TZif data files to generate. (TZif is the binary time 140# zone data format that zic generates; see Internet RFC 9636.) 141# If you want only POSIX time, with time values interpreted as 142# seconds since the epoch (not counting leap seconds), use 143# REDO= posix_only 144# below. If you want only "right" time, with values interpreted 145# as seconds since the epoch (counting leap seconds), use 146# REDO= right_only 147# below. If you want both sets of data available, with leap seconds not 148# counted normally, use 149# REDO= posix_right 150# below. If you want both sets of data available, with leap seconds counted 151# normally, use 152# REDO= right_posix 153# below. POSIX mandates that leap seconds not be counted; for compatibility 154# with it, use "posix_only" or "posix_right". Use POSIX time on systems with 155# leap smearing; this can work better than unsmeared "right" time with 156# applications that are not leap second aware, and is closer to unsmeared 157# "right" time than unsmeared POSIX time is (e.g., 0.5 vs 1.0 s max error). 158 159REDO= posix_right 160 161# Whether to put an "Expires" line in the leapseconds file. 162# Use EXPIRES_LINE=1 to put the line in, 0 to omit it. 163# The EXPIRES_LINE value matters only if REDO's value contains "right". 164# If you change EXPIRES_LINE, remove the leapseconds file before running "make". 165# zic's support for the Expires line was introduced in tzdb 2020a, 166# and was modified in tzdb 2021b to generate version 4 TZif files. 167# EXPIRES_LINE defaults to 0 for now so that the leapseconds file 168# can be given to pre-2020a zic implementations and so that TZif files 169# built by newer zic implementations can be read by pre-2021b libraries. 170EXPIRES_LINE= 0 171 172# To install data in text form that has all the information of the TZif data, 173# (optionally incorporating leap second information), use 174# TZDATA_TEXT= tzdata.zi leapseconds 175# To install text data without leap second information (e.g., because 176# REDO='posix_only'), use 177# TZDATA_TEXT= tzdata.zi 178# To avoid installing text data, use 179# TZDATA_TEXT= 180 181TZDATA_TEXT= leapseconds tzdata.zi 182 183# For backward-compatibility links for old zone names, use 184# BACKWARD= backward 185# To omit these links, use 186# BACKWARD= 187 188BACKWARD= backward 189 190# If you want out-of-scope and often-wrong data from the file 'backzone', 191# but only for entries listed in the backward-compatibility file zone.tab, use 192# PACKRATDATA= backzone 193# PACKRATLIST= zone.tab 194# If you want all the 'backzone' data, use 195# PACKRATDATA= backzone 196# PACKRATLIST= 197# To omit this data, use 198# PACKRATDATA= 199# PACKRATLIST= 200 201PACKRATDATA= 202PACKRATLIST= 203 204# The name of a locale using the UTF-8 encoding, used during self-tests. 205# The tests are skipped if the name does not appear to work on this system. 206 207UTF8_LOCALE= en_US.utf8 208 209# Non-default libraries needed to link. 210# On some hosts, this should have -lintl unless CFLAGS has -DHAVE_GETTEXT=0. 211LDLIBS= 212 213# Add the following to an uncommented "CFLAGS=" line as needed 214# to override defaults specified in the source code or by the system. 215# "-DFOO" is equivalent to "-DFOO=1". 216# -DDEPRECATE_TWO_DIGIT_YEARS for optional runtime warnings about strftime 217# formats that generate only the last two digits of year numbers 218# -DEPOCH_LOCAL if the 'time' function returns local time not UT 219# -DEPOCH_OFFSET=N if the 'time' function returns a value N greater 220# than what POSIX specifies, assuming local time is UT. 221# For example, N is 252460800 on AmigaOS. 222# -DHAVE_DECL_ASCTIME_R=0 if <time.h> does not declare asctime_r 223# on POSIX platforms predating POSIX.1-2024 224# -DHAVE_DECL_ENVIRON if <unistd.h> declares 'environ' 225# -DHAVE_DECL_TIMEGM=0 if <time.h> does not declare timegm 226# -DHAVE_DIRECT_H if mkdir needs <direct.h> (MS-Windows) 227# -DHAVE__GENERIC=0 if _Generic does not work* 228# -DHAVE_GETRANDOM if getrandom works (e.g., GNU/Linux), 229# -DHAVE_GETRANDOM=0 to avoid using getrandom 230# -DHAVE_GETTEXT if gettext works (e.g., GNU/Linux, FreeBSD, Solaris), 231# where LDLIBS also needs to contain -lintl on some hosts; 232# -DHAVE_GETTEXT=0 to avoid using gettext 233# -DHAVE_INCOMPATIBLE_CTIME_R if your system's time.h declares 234# ctime_r and asctime_r incompatibly with POSIX.1-2017 and earlier 235# (Solaris when _POSIX_PTHREAD_SEMANTICS is not defined). 236# -DHAVE_INTTYPES_H=0 if <inttypes.h> does not work*+ 237# -DHAVE_LINK=0 if your system lacks a link function 238# -DHAVE_LOCALTIME_R=0 if your system lacks a localtime_r function 239# -DHAVE_LOCALTIME_RZ=0 if you do not want zdump to use localtime_rz 240# localtime_rz can make zdump significantly faster, but is nonstandard. 241# -DHAVE_MALLOC_ERRNO=0 if malloc etc. do not set errno on failure. 242# -DHAVE_POSIX_DECLS=0 if your system's include files do not declare 243# functions like 'link' or variables like 'tzname' required by POSIX 244# -DHAVE_SETENV=0 if your system lacks the setenv function 245# -DHAVE_SNPRINTF=0 if your system lacks the snprintf function+ 246# -DHAVE_STDCKDINT_H=0 if neither <stdckdint.h> nor substitutes like 247# __builtin_add_overflow work* 248# -DHAVE_STDINT_H=0 if <stdint.h> does not work*+ 249# -DHAVE_STRFTIME_L if <time.h> declares locale_t and strftime_l 250# -DHAVE_STRDUP=0 if your system lacks the strdup function 251# -DHAVE_STRTOLL=0 if your system lacks the strtoll function+ 252# -DHAVE_SYMLINK=0 if your system lacks the symlink function 253# -DHAVE_SYS_STAT_H=0 if <sys/stat.h> does not work* 254# -DHAVE_TZSET=0 if your system lacks a tzset function 255# -DHAVE_UNISTD_H=0 if <unistd.h> does not work* 256# -DHAVE_UTMPX_H=0 if <utmpx.h> does not work* 257# -Dlocale_t=XXX if your system uses XXX instead of locale_t 258# -DMKTIME_MIGHT_OVERFLOW if mktime might fail due to time_t overflow 259# -DPORT_TO_C89 if tzcode should also run on mostly-C89 platforms+ 260# Typically it is better to use a later standard. For example, 261# with GCC 4.9.4 (2016), prefer '-std=gnu11' to '-DPORT_TO_C89'. 262# Even with -DPORT_TO_C89, the code needs at least one C99 263# feature (integers at least 64 bits wide) and maybe more. 264# -DRESERVE_STD_EXT_IDS if your platform reserves standard identifiers 265# with external linkage, e.g., applications cannot define 'localtime'. 266# -Dssize_t=int on hosts like MS-Windows that lack ssize_t 267# -DSUPPORT_C89=0 if the tzcode library should not support C89 callers 268# Although -DSUPPORT_C89=0 might work around latent bugs in callers, 269# it does not conform to POSIX. 270# -DSUPPORT_POSIX2008 if the library should support older POSIX callers+ 271# However, this might cause problems in POSIX.1-2024-or-later callers. 272# -DSUPPRESS_TZDIR to not prepend TZDIR to file names; this has 273# security implications and is not recommended for general use 274# -DTHREAD_SAFE to make localtime.c thread-safe, as POSIX requires; 275# not needed by the main-program tz code, which is single-threaded. 276# Append other compiler flags as needed, e.g., -pthread on GNU/Linux. 277# -Dtime_tz=\"T\" to use T as the time_t type, rather than the system time_t 278# This is intended for internal use only; it mangles external names. 279# -DTZ_DOMAIN=\"foo\" to use "foo" for gettext domain name; default is "tz" 280# -DTZ_DOMAINDIR=\"/path\" to use "/path" for gettext directory; 281# the default is system-supplied, typically "/usr/lib/locale" 282# -DTZDEFRULESTRING=\",date/time,date/time\" to default to the specified 283# DST transitions for proleptic format TZ strings lacking them, 284# in the usual case where POSIXRULES is '-'. If not specified, 285# TZDEFRULESTRING defaults to US rules for future DST transitions. 286# This mishandles some past timestamps, as US DST rules have changed. 287# It also mishandles settings like TZ='EET-2EEST' for eastern Europe, 288# as Europe and US DST rules differ. 289# -DTZNAME_MAXIMUM=N to limit time zone abbreviations to N bytes (default 254) 290# -DUNINIT_TRAP if reading uninitialized storage can cause problems 291# other than simply getting garbage data 292# -DUSE_LTZ=0 to build zdump with the system time zone library 293# Also set TZDOBJS=zdump.o and CHECK_TIME_T_ALTERNATIVES= below. 294# -DZIC_BLOAT_DEFAULT=\"fat\" to default zic's -b option to "fat", and 295# similarly for "slim". Fat TZif files work around incompatibilities 296# and bugs in some TZif readers, notably older ones that 297# ignore or otherwise mishandle 64-bit data in TZif files; 298# however, fat TZif files may trigger bugs in newer TZif readers. 299# Slim TZif files are more efficient, and are the default. 300# -DZIC_MAX_ABBR_LEN_WO_WARN=3 301# (or some other number) to set the maximum time zone abbreviation length 302# that zic will accept without a warning (the default is 6) 303# -g to generate symbolic debugging info 304# -Idir to include from directory 'dir' 305# -O0 to disable optimization; other -O options to enable more optimization 306# -Uname to remove any definition of the macro 'name' 307# $(GCC_DEBUG_FLAGS) if you are using recent GCC and want lots of checking 308# 309# * Options marked "*" can be omitted if your compiler is C23 compatible. 310# * Options marked "+" are obsolescent and are planned to be removed 311# once the code assumes C99 or later (say in the year 2029) 312# and POSIX.1-2024 or later (say in the year 2034). 313# 314# Select instrumentation via "make GCC_INSTRUMENT='whatever'". 315GCC_INSTRUMENT = \ 316 -fsanitize=undefined -fsanitize-address-use-after-scope \ 317 -fsanitize-undefined-trap-on-error -fstack-protector 318# Omit -fanalyzer from GCC_DEBUG_FLAGS, as it makes GCC too slow. 319GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 \ 320 $(GCC_INSTRUMENT) \ 321 -Wall -Wextra \ 322 -Walloc-size-larger-than=100000 -Warray-bounds=2 \ 323 -Wbad-function-cast -Wbidi-chars=any,ucn -Wcast-align=strict -Wcast-qual \ 324 -Wdate-time \ 325 -Wdeclaration-after-statement -Wdouble-promotion \ 326 -Wduplicated-branches -Wduplicated-cond -Wflex-array-member-not-at-end \ 327 -Wformat=2 -Wformat-overflow=2 -Wformat-signedness -Wformat-truncation \ 328 -Wimplicit-fallthrough=5 -Winit-self -Wlogical-op \ 329 -Wmissing-declarations -Wmissing-prototypes \ 330 -Wmissing-variable-declarations -Wnested-externs \ 331 -Wnull-dereference \ 332 -Wold-style-definition -Woverlength-strings -Wpointer-arith \ 333 -Wshadow -Wshift-overflow=2 -Wstrict-overflow \ 334 -Wstrict-prototypes -Wstringop-overflow=4 \ 335 -Wstringop-truncation -Wsuggest-attribute=cold \ 336 -Wsuggest-attribute=const -Wsuggest-attribute=format \ 337 -Wsuggest-attribute=malloc \ 338 -Wsuggest-attribute=noreturn -Wsuggest-attribute=pure \ 339 -Wtrampolines -Wundef -Wunused-macros -Wuse-after-free=3 \ 340 -Wvariadic-macros -Wvla -Wwrite-strings \ 341 -Wno-format-nonliteral -Wno-sign-compare -Wno-type-limits 342# 343# If your system has a "GMT offset" field in its "struct tm"s 344# (or if you decide to add such a field in your system's "time.h" file), 345# add the name to a define such as 346# -DTM_GMTOFF=tm_gmtoff 347# to the end of the "CFLAGS=" line. If not defined, the code attempts to 348# guess TM_GMTOFF from other macros; define NO_TM_GMTOFF to suppress this. 349# Similarly, if your system has a "zone abbreviation" field, define 350# -DTM_ZONE=tm_zone 351# and define NO_TM_ZONE to suppress any guessing. 352# Although POSIX.1-2024 requires these fields and they are widely available 353# on GNU/Linux and BSD systems, some older systems lack them. 354# 355# The next batch of options control support for external variables 356# exported by tzcode. In practice these variables are less useful 357# than TM_GMTOFF and TM_ZONE. However, most of them are standardized. 358# # 359# # To omit or support the external variable "tzname", add one of: 360# # -DHAVE_TZNAME=0 # do not support "tzname" 361# # -DHAVE_TZNAME=1 # support "tzname", which is defined by system library 362# # -DHAVE_TZNAME=2 # support and define "tzname" 363# # to the "CFLAGS=" line. Although "tzname" is required by POSIX.1-1988 364# # and later, its contents are unspecified if you use a geographical TZ 365# # and the variable is planned to be removed in a future POSIX edition. 366# # If not defined, the code attempts to guess HAVE_TZNAME from other macros. 367# # Warning: unless time_tz is also defined, HAVE_TZNAME=1 can cause 368# # crashes when combined with some platforms' standard libraries, 369# # presumably due to memory allocation issues. 370# # 371# # To omit or support the external variables "timezone" and "daylight", add 372# # -DUSG_COMPAT=0 # do not support 373# # -DUSG_COMPAT=1 # support, and variables are defined by system library 374# # -DUSG_COMPAT=2 # support and define variables 375# # to the "CFLAGS=" line; "timezone" and "daylight" are inspired by Unix 376# # Systems Group code and are required by POSIX.1-2008 and later (with XSI), 377# # although their contents are unspecified if you use a geographical TZ 378# # and the variables are planned to be removed in a future edition of POSIX. 379# # If not defined, the code attempts to guess USG_COMPAT from other macros. 380# # 381# # To support the external variable "altzone", add 382# # -DALTZONE=0 # do not support 383# # -DALTZONE=1 # support "altzone", which is defined by system library 384# # -DALTZONE=2 # support and define "altzone" 385# # to the end of the "CFLAGS=" line; although "altzone" appeared in 386# # System V Release 3.1 it has not been standardized. 387# # If not defined, the code attempts to guess ALTZONE from other macros. 388# 389# If you want functions that were inspired by early versions of X3J11's work, 390# add 391# -DSTD_INSPIRED 392# to the end of the "CFLAGS=" line. This arranges for the following 393# functions to be added to the time conversion library. 394# "offtime" is like "gmtime" except that it accepts a second (long) argument 395# that gives an offset to add to the time_t when converting it. 396# I.e., "offtime" is like calling "localtime_rz" with a fixed-offset zone. 397# "timelocal" is nearly equivalent to "mktime". 398# "timeoff" is like "timegm" except that it accepts a second (long) argument 399# that gives an offset to use when converting to a time_t. 400# I.e., "timeoff" is like calling "mktime_z" with a fixed-offset zone. 401# "posix2time" and "time2posix" are described in an included manual page. 402# X3J11's work does not describe any of these functions. 403# These functions may well disappear in future releases of the time 404# conversion package. 405# 406# If you don't want functions that were inspired by NetBSD, add 407# -DNETBSD_INSPIRED=0 408# to the end of the "CFLAGS=" line. Otherwise, the functions 409# "localtime_rz", "mktime_z", "tzalloc", and "tzfree" are added to the 410# time library, and if STD_INSPIRED is also defined to nonzero the functions 411# "posix2time_z" and "time2posix_z" are added as well. 412# The functions ending in "_z" (or "_rz") are like their unsuffixed 413# (or suffixed-by-"_r") counterparts, except with an extra first 414# argument of opaque type timezone_t that specifies the timezone. 415# "tzalloc" allocates a timezone_t value, and "tzfree" frees it. 416# 417# If you want to allocate state structures in localtime, add 418# -DALL_STATE 419# to the end of the "CFLAGS=" line. Storage is obtained by calling malloc. 420# 421# NIST-PCTS:151-2, Version 1.4, (1993-12-03) is a test suite put 422# out by the National Institute of Standards and Technology 423# which claims to test C and POSIX conformance. If you want to pass PCTS, add 424# -DPCTS 425# to the end of the "CFLAGS=" line. 426# 427# If you want strict compliance with XPG4 as of 1994-04-09, add 428# -DXPG4_1994_04_09 429# to the end of the "CFLAGS=" line. This causes "strftime" to always return 430# 53 as a week number (rather than 52 or 53) for January days before 431# January's first Monday when a "%V" format is used and January 1 432# falls on a Friday, Saturday, or Sunday. 433# 434# POSIX says CFLAGS defaults to "-O 1". 435# Uncomment the following line and edit its contents as needed. 436 437#CFLAGS= -O 1 438 439 440# The name of a POSIX-like library archiver, its flags, C compiler, 441# linker flags, and 'make' utility. Ordinarily the defaults suffice. 442# The commented-out values are the defaults specified by POSIX.1-2024. 443#AR = ar 444#ARFLAGS = -rv 445#CC = c17 446#LDFLAGS = 447#MAKE = make 448 449# Where to fetch leap-seconds.list from. 450leaplist_URI = \ 451 https://hpiers.obspm.fr/iers/bul/bulc/ntp/leap-seconds.list 452# The file is generated by the IERS Earth Orientation Centre, in Paris. 453leaplist_TZ = Europe/Paris 454 455# The zic command and its arguments. 456 457zic= ./zic 458ZIC= $(zic) $(ZFLAGS) 459 460# To shrink the size of installed TZif files, 461# append "-r @N" to omit data before N-seconds-after-the-Epoch. 462# To grow the files and work around bugs in older applications, 463# possibly at the expense of introducing bugs in newer ones, 464# append "-b fat"; see ZIC_BLOAT_DEFAULT above. 465# See the zic man page for more about -b and -r. 466ZFLAGS= 467 468# How to use zic to install TZif files. 469 470ZIC_INSTALL= $(ZIC) -d '$(DESTDIR)$(TZDIR)' 471 472# The name of a POSIX-compliant 'awk' on your system. 473# mawk 1.3.3 and Solaris 10 /usr/bin/awk do not work. 474# Also, it is better (though not essential) if 'awk' supports UTF-8, 475# and unfortunately mawk and busybox awk do not support UTF-8. 476# Try AWK=gawk or AWK=nawk if your awk has the abovementioned problems. 477AWK= awk 478 479# The full path name of a POSIX-compliant shell, preferably one that supports 480# the Korn shell's 'select' statement as an extension. 481# These days, Bash is the most popular. 482# It should be OK to set this to /bin/sh, on platforms where /bin/sh 483# lacks 'select' or doesn't completely conform to POSIX, but /bin/bash 484# is typically nicer if it works. 485KSHELL= /bin/bash 486 487# Name of curl <https://curl.haxx.se/>, used for HTML validation 488# and to fetch leap-seconds.list from upstream. 489# Set CURL=: to disable use of the Internet. 490CURL= curl 491 492# Name of GNU Privacy Guard <https://gnupg.org/>, used to sign distributions. 493GPG= gpg 494 495# This expensive test requires USE_LTZ. 496# To suppress it, define this macro to be empty. 497CHECK_TIME_T_ALTERNATIVES = check_time_t_alternatives 498 499# SAFE_CHAR is a regular expression that matches a safe character. 500# Some parts of this distribution are limited to safe characters; 501# others can use any UTF-8 character. 502# For now, the safe characters are a safe subset of ASCII. 503# The caller must set the shell variable 'sharp' to the character '#', 504# since Makefile macros cannot contain '#'. 505# TAB_CHAR is a single tab character, in single quotes. 506TAB_CHAR= ' ' 507SAFE_CHARSET1= $(TAB_CHAR)' !\"'$$sharp'$$%&'\''()*+,./0123456789:;<=>?@' 508SAFE_CHARSET2= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\^_`' 509SAFE_CHARSET3= 'abcdefghijklmnopqrstuvwxyz{|}~' 510SAFE_CHARSET= $(SAFE_CHARSET1)$(SAFE_CHARSET2)$(SAFE_CHARSET3) 511SAFE_CHAR= '[]'$(SAFE_CHARSET)'-]' 512 513# These non-alphabetic, non-ASCII printable characters are Latin-1, 514# and so are likely displayable even in editors like XEmacs 21 515# that have limited display capabilities. 516UNUSUAL_OK_LATIN_1 = ¡¢£¤¥¦§¨©«¬®¯°±²³´¶·¸¹»¼½¾¿×÷ 517# Non-ASCII non-letters that OK_CHAR allows, as these characters are 518# useful in commentary. 519UNUSUAL_OK_CHARSET= $(UNUSUAL_OK_LATIN_1) 520 521# Put this in a bracket expression to match spaces. 522s = [:space:] 523 524# OK_CHAR matches any character allowed in the distributed files. 525# This is the same as SAFE_CHAR, except that UNUSUAL_OK_CHARSET and 526# multibyte letters are also allowed so that commentary can contain a 527# few safe symbols and people's names and can quote non-English sources. 528# Other non-letters are limited to ASCII renderings for the 529# convenience of maintainers using XEmacs 21.5.34, which by default 530# mishandles Unicode characters U+0100 and greater. 531OK_CHAR= '[][:alpha:]$(UNUSUAL_OK_CHARSET)'$(SAFE_CHARSET)'-]' 532 533# SAFE_LINE matches a line of safe characters. 534# SAFE_SHARP_LINE is similar, except any OK character can follow '#'; 535# this is so that comments can contain non-ASCII characters. 536# OK_LINE matches a line of OK characters. 537SAFE_LINE= '^'$(SAFE_CHAR)'*$$' 538SAFE_SHARP_LINE='^'$(SAFE_CHAR)'*('$$sharp$(OK_CHAR)'*)?$$' 539OK_LINE= '^'$(OK_CHAR)'*$$' 540 541# Flags to give 'tar' when making a distribution. 542# Try to use flags appropriate for GNU tar. 543GNUTARFLAGS= --format=pax --pax-option=delete=atime,delete=ctime \ 544 --numeric-owner --owner=0 --group=0 \ 545 --mode=go+u,go-w --sort=name 546SETUP_TAR= \ 547 export LC_ALL=C && \ 548 if tar $(GNUTARFLAGS) --version >/dev/null 2>&1; then \ 549 TAR='tar $(GNUTARFLAGS)'; \ 550 else \ 551 TAR=tar; \ 552 fi 553 554# Flags to give 'gzip' when making a distribution. 555GZIPFLAGS= -9n 556 557# When comparing .tzs files, use GNU diff's -F'^TZ=' option if supported. 558# This makes it easier to see which Zone has been affected. 559SETUP_DIFF_TZS = \ 560 if diff -u -F'^TZ=' - - <>/dev/null >&0 2>&1; then \ 561 DIFF_TZS='diff -u -F^TZ='; \ 562 else \ 563 DIFF_TZS='diff -u'; \ 564 fi 565 566# ':' on typical hosts; 'ranlib' on the ancient hosts that still need ranlib. 567RANLIB= : 568 569# POSIX prohibits defining or using SHELL. However, csh users on systems 570# that use the user shell for Makefile commands may need to define SHELL. 571#SHELL= /bin/sh 572 573# End of macros that one plausibly might want to tailor. 574############################################################################### 575 576 577TZCOBJS= zic.o 578TZDOBJS= zdump.o localtime.o strftime.o 579DATEOBJS= date.o localtime.o strftime.o 580LIBSRCS= localtime.c asctime.c difftime.c strftime.c 581LIBOBJS= localtime.o asctime.o difftime.o strftime.o 582HEADERS= tzfile.h private.h 583NONLIBSRCS= zic.c zdump.c 584NEWUCBSRCS= date.c 585SOURCES= $(HEADERS) $(LIBSRCS) $(NONLIBSRCS) $(NEWUCBSRCS) \ 586 tzselect.ksh workman.sh 587MANS= newctime.3 newstrftime.3 newtzset.3 time2posix.3 \ 588 tzfile.5 tzselect.8 zic.8 zdump.8 589MANTXTS= newctime.3.txt newstrftime.3.txt newtzset.3.txt \ 590 time2posix.3.txt \ 591 tzfile.5.txt tzselect.8.txt zic.8.txt zdump.8.txt \ 592 date.1.txt 593COMMON= calendars CONTRIBUTING LICENSE Makefile \ 594 NEWS README SECURITY theory.html version 595WEB_PAGES= tz-art.html tz-how-to.html tz-link.html 596CHECK_WEB_PAGES=theory.ck tz-art.ck tz-how-to.ck tz-link.ck 597DOCS= $(MANS) date.1 $(MANTXTS) $(WEB_PAGES) 598PRIMARY_YDATA= africa antarctica asia australasia \ 599 europe northamerica southamerica 600YDATA= $(PRIMARY_YDATA) etcetera 601NDATA= factory 602TDATA_TO_CHECK= $(YDATA) $(NDATA) backward 603TDATA= $(YDATA) $(NDATA) $(BACKWARD) 604ZONETABLES= zone.tab zone1970.tab zonenow.tab 605TABDATA= iso3166.tab $(TZDATA_TEXT) $(ZONETABLES) 606LEAP_DEPS= leapseconds.awk leap-seconds.list 607TZDATA_ZI_DEPS= ziguard.awk zishrink.awk version $(TDATA) \ 608 $(PACKRATDATA) $(PACKRATLIST) 609DSTDATA_ZI_DEPS= ziguard.awk $(TDATA) $(PACKRATDATA) $(PACKRATLIST) 610DATA= $(TDATA_TO_CHECK) backzone iso3166.tab leap-seconds.list \ 611 leapseconds $(ZONETABLES) 612AWK_SCRIPTS= checklinks.awk checknow.awk checktab.awk leapseconds.awk \ 613 ziguard.awk zishrink.awk 614MISC= $(AWK_SCRIPTS) 615TZS_YEAR= 2050 616TZS_CUTOFF_FLAG= -c $(TZS_YEAR) 617TZS= to$(TZS_YEAR).tzs 618TZS_NEW= to$(TZS_YEAR)new.tzs 619TZS_DEPS= $(YDATA) localtime.c private.h \ 620 strftime.c tzfile.h zdump.c zic.c 621TZDATA_DIST = $(COMMON) $(DATA) $(MISC) 622# EIGHT_YARDS is just a yard short of the whole ENCHILADA. 623EIGHT_YARDS = $(TZDATA_DIST) $(DOCS) $(SOURCES) tzdata.zi 624ENCHILADA = $(EIGHT_YARDS) $(TZS) 625 626# Consult these files when deciding whether to rebuild the 'version' file. 627# This list is not the same as the output of 'git ls-files', since 628# .gitignore is not distributed. 629VERSION_DEPS= \ 630 calendars CONTRIBUTING LICENSE Makefile NEWS README SECURITY \ 631 africa antarctica asctime.c asia australasia \ 632 backward backzone \ 633 checklinks.awk checknow.awk checktab.awk \ 634 date.1 date.c difftime.c \ 635 etcetera europe factory iso3166.tab \ 636 leap-seconds.list leapseconds.awk localtime.c \ 637 newctime.3 newstrftime.3 newtzset.3 northamerica \ 638 private.h southamerica strftime.c theory.html \ 639 time2posix.3 tz-art.html tz-how-to.html tz-link.html \ 640 tzfile.5 tzfile.h tzselect.8 tzselect.ksh \ 641 workman.sh zdump.8 zdump.c zic.8 zic.c \ 642 ziguard.awk zishrink.awk \ 643 zone.tab zone1970.tab zonenow.tab 644 645all: tzselect zic zdump libtz.a $(TABDATA) \ 646 vanguard.zi main.zi rearguard.zi 647 648ALL: all date $(ENCHILADA) 649 650install: all $(DATA) $(REDO) $(MANS) 651 mkdir -p '$(DESTDIR)$(BINDIR)' \ 652 '$(DESTDIR)$(ZDUMPDIR)' '$(DESTDIR)$(ZICDIR)' \ 653 '$(DESTDIR)$(LIBDIR)' \ 654 '$(DESTDIR)$(MANDIR)/man3' '$(DESTDIR)$(MANDIR)/man5' \ 655 '$(DESTDIR)$(MANDIR)/man8' 656 $(ZIC_INSTALL) -l $(LOCALTIME) \ 657 -p $(POSIXRULES) \ 658 -t '$(DESTDIR)$(TZDEFAULT)' 659 cp -f $(TABDATA) '$(DESTDIR)$(TZDIR)/.' 660 cp tzselect '$(DESTDIR)$(BINDIR)/.' 661 cp zdump '$(DESTDIR)$(ZDUMPDIR)/.' 662 cp zic '$(DESTDIR)$(ZICDIR)/.' 663 cp libtz.a '$(DESTDIR)$(LIBDIR)/.' 664 $(RANLIB) '$(DESTDIR)$(LIBDIR)/libtz.a' 665 cp -f newctime.3 newtzset.3 '$(DESTDIR)$(MANDIR)/man3/.' 666 cp -f tzfile.5 '$(DESTDIR)$(MANDIR)/man5/.' 667 cp -f tzselect.8 zdump.8 zic.8 '$(DESTDIR)$(MANDIR)/man8/.' 668 669INSTALL: ALL install date.1 670 mkdir -p '$(DESTDIR)$(BINDIR)' '$(DESTDIR)$(MANDIR)/man1' 671 cp date '$(DESTDIR)$(BINDIR)/.' 672 cp -f date.1 '$(DESTDIR)$(MANDIR)/man1/.' 673 674# Calculate version number from git, if available. 675# Otherwise, use $(VERSION) unless it is "unknown" and there is already 676# a 'version' file, in which case reuse the existing 'version' contents 677# and append "-dirty" if the contents do not already end in "-dirty". 678version: $(VERSION_DEPS) 679 { (type git) >/dev/null 2>&1 && \ 680 V=$$(git describe --match '[0-9][0-9][0-9][0-9][a-z]*' \ 681 --abbrev=7 --dirty) || \ 682 if test '$(VERSION)' = unknown && read -r V <$@; then \ 683 V=$${V%-dirty}-dirty; \ 684 else \ 685 V='$(VERSION)'; \ 686 fi; } && \ 687 printf '%s\n' "$$V" >$@.out 688 mv $@.out $@ 689 690# These files can be tailored by setting BACKWARD, PACKRATDATA, PACKRATLIST. 691vanguard.zi main.zi rearguard.zi: $(DSTDATA_ZI_DEPS) 692 $(AWK) \ 693 -v DATAFORM=$(@:.zi=) \ 694 -v PACKRATDATA='$(PACKRATDATA)' \ 695 -v PACKRATLIST='$(PACKRATLIST)' \ 696 -f ziguard.awk \ 697 $(TDATA) $(PACKRATDATA) >$@.out 698 mv $@.out $@ 699# This file has a version comment that attempts to capture any tailoring 700# via BACKWARD, DATAFORM, PACKRATDATA, PACKRATLIST, and REDO. 701tzdata.zi: $(DATAFORM).zi version zishrink.awk 702 read -r version <version && \ 703 LC_ALL=C $(AWK) \ 704 -v dataform='$(DATAFORM)' \ 705 -v deps='$(DSTDATA_ZI_DEPS) zishrink.awk' \ 706 -v redo='$(REDO)' \ 707 -v version="$$version" \ 708 -f zishrink.awk \ 709 $(DATAFORM).zi >$@.out 710 mv $@.out $@ 711 712tzdir.h: 713 printf '%s\n' >$@.out \ 714 '#ifndef TZDEFAULT' \ 715 '# define TZDEFAULT "$(TZDEFAULT)" /* default zone */' \ 716 '#endif' \ 717 '#ifndef TZDIR' \ 718 '# define TZDIR "$(TZDIR)" /* TZif directory */' \ 719 '#endif' 720 mv $@.out $@ 721 722version.h: version 723 read -r VERSION <version && printf '%s\n' \ 724 'static char const PKGVERSION[]="($(PACKAGE)) ";' \ 725 "static char const TZVERSION[]=\"$$VERSION\";" \ 726 'static char const REPORT_BUGS_TO[]="$(BUGEMAIL)";' \ 727 >$@.out 728 mv $@.out $@ 729 730zdump: $(TZDOBJS) 731 $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZDOBJS) $(LDLIBS) 732 733zic: $(TZCOBJS) 734 $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZCOBJS) $(LDLIBS) 735 736leapseconds: $(LEAP_DEPS) 737 $(AWK) -v EXPIRES_LINE=$(EXPIRES_LINE) \ 738 -f leapseconds.awk leap-seconds.list >$@.out 739 mv $@.out $@ 740 741# Awk script to extract a Git-style author from leap-seconds.list comments. 742EXTRACT_AUTHOR = \ 743 author_line { sub(/^.[[:space:]]*/, ""); \ 744 sub(/:[[:space:]]*/, " <"); \ 745 printf "%s>\n", $$0; \ 746 success = 1; \ 747 exit \ 748 } \ 749 /Questions or comments to:/ { author_line = 1 } \ 750 END { exit !success } 751 752# Fetch leap-seconds.list from upstream. 753fetch-leap-seconds.list: 754 $(CURL) -OR $(leaplist_URI) 755 756# Fetch leap-seconds.list from upstream and commit it to the local repository. 757commit-leap-seconds.list: fetch-leap-seconds.list 758 author=$$($(AWK) '$(EXTRACT_AUTHOR)' leap-seconds.list) && \ 759 date=$$(TZ=$(leaplist_TZ) stat -c%y leap-seconds.list) && \ 760 git commit --author="$$author" --date="$$date" -m'make $@' \ 761 leap-seconds.list 762 763# Arguments to pass to submakes. 764# They can be overridden by later submake arguments. 765INSTALLARGS = \ 766 BACKWARD='$(BACKWARD)' \ 767 DESTDIR='$(DESTDIR)' \ 768 PACKRATDATA='$(PACKRATDATA)' \ 769 PACKRATLIST='$(PACKRATLIST)' \ 770 TZDEFAULT='$(TZDEFAULT)' \ 771 TZDIR='$(TZDIR)' \ 772 ZIC='$(ZIC)' 773 774INSTALL_DATA_DEPS = zic leapseconds tzdata.zi 775 776posix_only: $(INSTALL_DATA_DEPS) 777 $(ZIC_INSTALL) tzdata.zi 778 779right_only: $(INSTALL_DATA_DEPS) 780 $(ZIC_INSTALL) -L leapseconds tzdata.zi 781 782# In earlier versions of this makefile, the other two directories were 783# subdirectories of $(TZDIR). However, this led to configuration errors. 784# For example, with posix_right under the earlier scheme, 785# TZ='right/Australia/Adelaide' got you localtime with leap seconds, 786# but gmtime without leap seconds, which led to problems with applications 787# like sendmail that subtract gmtime from localtime. 788# Therefore, the other two directories are now siblings of $(TZDIR). 789# You must replace all of $(TZDIR) to switch from not using leap seconds 790# to using them, or vice versa. 791right_posix: right_only 792 rm -fr '$(DESTDIR)$(TZDIR)-leaps' 793 ln -s '$(TZDIR_BASENAME)' '$(DESTDIR)$(TZDIR)-leaps' || \ 794 $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only 795 $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only 796 797posix_right: posix_only 798 rm -fr '$(DESTDIR)$(TZDIR)-posix' 799 ln -s '$(TZDIR_BASENAME)' '$(DESTDIR)$(TZDIR)-posix' || \ 800 $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only 801 $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only 802 803zones: $(REDO) 804 805# dummy.zd is not a real file; it is mentioned here only so that the 806# top-level 'make' does not have a syntax error. 807ZDS = dummy.zd 808# Rule used only by submakes invoked by the $(TZS_NEW) rule. 809# It is separate so that GNU 'make -j' can run instances in parallel. 810$(ZDS): zdump 811 ./zdump -i $(TZS_CUTOFF_FLAG) "$$PWD/$(@:.zd=)" >$@ 812 813TZS_NEW_DEPS = tzdata.zi zdump zic 814$(TZS_NEW): $(TZS_NEW_DEPS) 815 rm -fr tzs$(TZS_YEAR).dir 816 mkdir tzs$(TZS_YEAR).dir 817 $(zic) -d tzs$(TZS_YEAR).dir tzdata.zi 818 $(AWK) '/^L/{print "Link\t" $$2 "\t" $$3}' \ 819 tzdata.zi | LC_ALL=C sort >$@.out 820 x=$$($(AWK) '/^Z/{print "tzs$(TZS_YEAR).dir/" $$2 ".zd"}' \ 821 tzdata.zi \ 822 | LC_ALL=C sort -t . -k 2,2) && \ 823 set x $$x && \ 824 shift && \ 825 ZDS=$$* && \ 826 $(MAKE) TZS_CUTOFF_FLAG="$(TZS_CUTOFF_FLAG)" \ 827 ZDS="$$ZDS" $$ZDS && \ 828 sed 's,^TZ=".*\.dir/,TZ=",' $$ZDS >>$@.out 829 rm -fr tzs$(TZS_YEAR).dir 830 mv $@.out $@ 831 832# If $(TZS) exists but 'make tzs.ck' fails, a maintainer should inspect the 833# failed output and fix the inconsistency, perhaps by running 'make force_tzs'. 834$(TZS): 835 touch $@ 836 837force_tzs: $(TZS_NEW) 838 cp $(TZS_NEW) $(TZS) 839 840libtz.a: $(LIBOBJS) 841 rm -f $@ 842 $(AR) $(ARFLAGS) $@ $(LIBOBJS) 843 $(RANLIB) $@ 844 845date: $(DATEOBJS) 846 $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(DATEOBJS) $(LDLIBS) 847 848tzselect: tzselect.ksh version 849 read -r VERSION <version && sed \ 850 -e "s'#!/bin/bash'#!"'$(KSHELL)'\' \ 851 -e s\''\(AWK\)=[^}]*'\''\1=\'\''$(AWK)\'\'\' \ 852 -e s\''\(PKGVERSION\)=.*'\''\1=\'\''($(PACKAGE)) \'\'\' \ 853 -e s\''\(REPORT_BUGS_TO\)=.*'\''\1=\'\''$(BUGEMAIL)\'\'\' \ 854 -e s\''\(TZDIR\)=[^}]*'\''\1=\'\''$(TZDIR)\'\'\' \ 855 -e s\''\(TZVERSION\)=.*'\''\1=\'"'$$VERSION\\''" \ 856 <$@.ksh >$@.out 857 chmod +x $@.out 858 mv $@.out $@ 859 860check: check_mild back.ck now.ck 861check_mild: check_web check_zishrink \ 862 character-set.ck white-space.ck links.ck mainguard.ck \ 863 name-lengths.ck slashed-abbrs.ck sorted.ck \ 864 tables.ck ziguard.ck tzs.ck 865 866# True if UTF8_LOCALE does not work; 867# otherwise, false but with LC_ALL set to $(UTF8_LOCALE). 868UTF8_LOCALE_MISSING = \ 869 { test ! '$(UTF8_LOCALE)' \ 870 || ! printf 'A\304\200B\n' \ 871 | LC_ALL='$(UTF8_LOCALE)' grep -q '^A.B$$' >/dev/null 2>&1 \ 872 || { export LC_ALL='$(UTF8_LOCALE)'; false; }; } 873 874character-set.ck: $(ENCHILADA) 875 $(UTF8_LOCALE_MISSING) || { \ 876 sharp='#' && \ 877 ! grep -Env $(SAFE_LINE) $(MANS) date.1 $(MANTXTS) \ 878 $(MISC) $(SOURCES) $(WEB_PAGES) \ 879 CONTRIBUTING LICENSE README SECURITY \ 880 version tzdata.zi && \ 881 ! grep -Env $(SAFE_LINE)'|^UNUSUAL_OK_'$(OK_CHAR)'*$$' \ 882 Makefile && \ 883 ! grep -Env $(SAFE_SHARP_LINE) $(TDATA_TO_CHECK) backzone \ 884 leapseconds zone.tab && \ 885 ! grep -Env $(OK_LINE) $(ENCHILADA); \ 886 } 887 touch $@ 888 889white-space.ck: $(ENCHILADA) 890 $(UTF8_LOCALE_MISSING) || { \ 891 enchilada='$(ENCHILADA)' && \ 892 patfmt=' \t|[\f\r\v]' && pat=$$(printf "$$patfmt\\n") && \ 893 ! grep -En "$$pat|[$s]\$$" \ 894 $${enchilada%leap-seconds.list*} \ 895 $${enchilada#*leap-seconds.list}; \ 896 } 897 touch $@ 898 899PRECEDES_FILE_NAME = ^(Zone|Link[$s]+[^$s]+)[$s]+ 900FILE_NAME_COMPONENT_TOO_LONG = $(PRECEDES_FILE_NAME)[^$s]*[^/$s]{15} 901 902name-lengths.ck: $(TDATA_TO_CHECK) backzone 903 :;! grep -En '$(FILE_NAME_COMPONENT_TOO_LONG)' \ 904 $(TDATA_TO_CHECK) backzone 905 touch $@ 906 907mainguard.ck: main.zi 908 test '$(PACKRATLIST)' || \ 909 cat $(TDATA) $(PACKRATDATA) | diff -u - main.zi 910 touch $@ 911 912PRECEDES_STDOFF = ^(Zone[$s]+[^$s]+)?[$s]+ 913STDOFF = [-+]?[0-9:.]+ 914RULELESS_SAVE = (-|$(STDOFF)[sd]?) 915RULELESS_SLASHED_ABBRS = \ 916 $(PRECEDES_STDOFF)$(STDOFF)[$s]+$(RULELESS_SAVE)[$s]+[^$s]*/ 917 918slashed-abbrs.ck: $(TDATA_TO_CHECK) 919 :;! grep -En '$(RULELESS_SLASHED_ABBRS)' $(TDATA_TO_CHECK) 920 touch $@ 921 922CHECK_CC_LIST = { n = split($$1,a,/,/); for (i=2; i<=n; i++) print a[1], a[i]; } 923 924sorted.ck: backward backzone 925 $(AWK) '/^Link/ {printf "%.5d %s\n", g, $$3} !/./ {g++}' \ 926 backward | LC_ALL=C sort -cu 927 $(AWK) '/^Zone.*\// {print $$2}' backzone | LC_ALL=C sort -cu 928 touch $@ 929 930back.ck: checklinks.awk $(TDATA_TO_CHECK) 931 $(AWK) \ 932 -v DATAFORM=$(DATAFORM) \ 933 -v backcheck=backward \ 934 -f checklinks.awk $(TDATA_TO_CHECK) 935 touch $@ 936 937links.ck: checklinks.awk tzdata.zi 938 $(AWK) \ 939 -v DATAFORM=$(DATAFORM) \ 940 -f checklinks.awk tzdata.zi 941 touch $@ 942 943# Check timestamps from now through 28 years from now, to make sure 944# that zonenow.tab contains all sequences of planned timestamps, 945# without any duplicate sequences. In theory this might require 946# 2800+ years but that would take a long time to check. 947CHECK_NOW_TIMESTAMP = $$(./date +%s) 948CHECK_NOW_FUTURE_YEARS = 28 949CHECK_NOW_FUTURE_SECS = $(CHECK_NOW_FUTURE_YEARS) * 366 * 24 * 60 * 60 950now.ck: checknow.awk date tzdata.zi zdump zic zone1970.tab zonenow.tab 951 rm -fr $@d 952 mkdir $@d 953 ./zic -d $@d tzdata.zi 954 now=$(CHECK_NOW_TIMESTAMP) && \ 955 future=$$(($(CHECK_NOW_FUTURE_SECS) + $$now)) && \ 956 ./zdump -i -t $$now,$$future \ 957 $$(find "$$PWD/$@d"/????*/ -type f) \ 958 >$@d/zdump-now.tab && \ 959 ./zdump -i -t 0,$$future \ 960 $$(find "$$PWD/$@d" -name Etc -prune \ 961 -o -type f ! -name '*.tab' -print) \ 962 >$@d/zdump-1970.tab 963 $(AWK) \ 964 -v zdump_table=$@d/zdump-now.tab \ 965 -f checknow.awk zonenow.tab 966 $(AWK) \ 967 'BEGIN {print "-\t-\tUTC"} /^Zone/ {print "-\t-\t" $$2}' \ 968 $(PRIMARY_YDATA) backward factory | \ 969 $(AWK) \ 970 -v zdump_table=$@d/zdump-1970.tab \ 971 -f checknow.awk 972 rm -fr $@d 973 touch $@ 974 975tables.ck: checktab.awk $(YDATA) backward zone.tab zone1970.tab 976 for tab in $(ZONETABLES); do \ 977 test "$$tab" = zone.tab && links='$(BACKWARD)' || links=''; \ 978 $(AWK) -f checktab.awk -v zone_table=$$tab $(YDATA) $$links \ 979 || exit; \ 980 done 981 touch $@ 982 983tzs.ck: $(TZS) $(TZS_NEW) 984 if test -s $(TZS); then \ 985 $(SETUP_DIFF_TZS) && $$DIFF_TZS $(TZS) $(TZS_NEW); \ 986 else \ 987 cp $(TZS_NEW) $(TZS); \ 988 fi 989 touch $@ 990 991check_web: $(CHECK_WEB_PAGES) 992.SUFFIXES: .ck .html 993.html.ck: 994 { ! ($(CURL) --version) >/dev/null 2>&1 || \ 995 $(CURL) -sS --url https://validator.w3.org/nu/ -F out=gnu \ 996 -F file=@$<; } >$@.out && \ 997 test ! -s $@.out || { cat $@.out; exit 1; } 998 mv $@.out $@ 999 1000ziguard.ck: rearguard.zi vanguard.zi ziguard.awk 1001 $(AWK) -v DATAFORM=rearguard -f ziguard.awk vanguard.zi | \ 1002 diff -u rearguard.zi - 1003 $(AWK) -v DATAFORM=vanguard -f ziguard.awk rearguard.zi | \ 1004 diff -u vanguard.zi - 1005 touch $@ 1006 1007# Check that zishrink.awk does not alter the data, and that ziguard.awk 1008# preserves main-format data. 1009check_zishrink: zishrink-posix.ck zishrink-right.ck 1010zishrink-posix.ck zishrink-right.ck: \ 1011 zic leapseconds $(PACKRATDATA) $(PACKRATLIST) \ 1012 $(TDATA) $(DATAFORM).zi tzdata.zi 1013 rm -fr $@d t-$@d shrunk-$@d 1014 mkdir $@d t-$@d shrunk-$@d 1015 case $@ in \ 1016 *right*) leap='-L leapseconds';; \ 1017 *) leap=;; \ 1018 esac && \ 1019 $(ZIC) $$leap -d $@d $(DATAFORM).zi && \ 1020 $(ZIC) $$leap -d shrunk-$@d tzdata.zi && \ 1021 case $(DATAFORM),$(PACKRATLIST) in \ 1022 main,) \ 1023 $(ZIC) $$leap -d t-$@d $(TDATA) && \ 1024 $(AWK) '/^Rule/' $(TDATA) | \ 1025 $(ZIC) $$leap -d t-$@d - $(PACKRATDATA) && \ 1026 diff -r $@d t-$@d;; \ 1027 esac 1028 diff -r $@d shrunk-$@d 1029 rm -fr $@d t-$@d shrunk-$@d 1030 touch $@ 1031 1032clean_misc: 1033 rm -fr *.ckd *.dir 1034 rm -f *.ck *.core *.o *.out core core.* \ 1035 date tzdir.h tzselect version.h zdump zic libtz.a 1036clean: clean_misc 1037 rm -fr tzdb-*/ 1038 rm -f *.zi $(TZS_NEW) 1039 1040maintainer-clean: clean 1041 @echo 'This command is intended for maintainers to use; it' 1042 @echo 'deletes files that may need special tools to rebuild.' 1043 rm -f leapseconds version $(MANTXTS) $(TZS) *.asc *.tar.* 1044 1045names: 1046 @echo $(ENCHILADA) 1047 1048public: check public.ck $(CHECK_TIME_T_ALTERNATIVES) \ 1049 tarballs signatures 1050 1051date.1.txt: date.1 1052newctime.3.txt: newctime.3 1053newstrftime.3.txt: newstrftime.3 1054newtzset.3.txt: newtzset.3 1055time2posix.3.txt: time2posix.3 1056tzfile.5.txt: tzfile.5 1057tzselect.8.txt: tzselect.8 1058zdump.8.txt: zdump.8 1059zic.8.txt: zic.8 1060 1061$(MANTXTS): workman.sh 1062 LC_ALL=C sh workman.sh $(@:.txt=) >$@.out 1063 mv $@.out $@ 1064 1065# Set file timestamps deterministically if possible, 1066# so that tarballs containing the timestamps are reproducible. 1067# 1068# '$(SET_TIMESTAMP_N) N DEST A B C ...' sets the timestamp of the 1069# file DEST to the maximum of the timestamps of the files A B C ..., 1070# plus N if GNU ls and touch are available. 1071SET_TIMESTAMP_N = sh -c '\ 1072 n=$$0 dest=$$1; shift; \ 1073 <"$$dest" && \ 1074 if test $$n != 0 && \ 1075 lsout=$$(ls -nt --time-style="+%s" "$$@" 2>/dev/null); then \ 1076 set x $$lsout && \ 1077 timestamp=$$(($$7 + $$n)) && \ 1078 echo "+ touch -md @$$timestamp $$dest" && \ 1079 touch -md @$$timestamp "$$dest"; \ 1080 else \ 1081 newest=$$(ls -t "$$@" | sed 1q) && \ 1082 echo "+ touch -mr $$newest $$dest" && \ 1083 touch -mr "$$newest" "$$dest"; \ 1084 fi' 1085# If DEST depends on A B C ... in this Makefile, callers should use 1086# $(SET_TIMESTAMP_DEP) DEST A B C ..., for the benefit of any 1087# downstream 'make' that considers equal timestamps to be out of date. 1088# POSIX allows this 'make' behavior, and HP-UX 'make' does it. 1089# If all that matters is that the timestamp be reproducible 1090# and plausible, use $(SET_TIMESTAMP). 1091SET_TIMESTAMP = $(SET_TIMESTAMP_N) 0 1092SET_TIMESTAMP_DEP = $(SET_TIMESTAMP_N) 1 1093 1094# Set the timestamps to those of the git repository, if available, 1095# and if the files have not changed since then. 1096# This uses GNU 'ls --time-style=+%s', which outputs the seconds count, 1097# and GNU 'touch -d@N FILE', where N is the number of seconds since 1970. 1098# If git or GNU is absent, don't bother to sync with git timestamps. 1099# Also, set the timestamp of each prebuilt file like 'leapseconds' 1100# to be the maximum of the files it depends on. 1101set-timestamps.out: $(EIGHT_YARDS) 1102 rm -f $@ 1103 if (type git) >/dev/null 2>&1 && \ 1104 files=$$(git ls-files $(EIGHT_YARDS)) && \ 1105 touch -md @1 test.out; then \ 1106 rm -f test.out && \ 1107 for file in $$files; do \ 1108 if git diff --quiet HEAD $$file; then \ 1109 time=$$(TZ=UTC0 git log -1 \ 1110 --format='tformat:%cd' \ 1111 --date='format:%Y-%m-%dT%H:%M:%SZ' \ 1112 $$file) && \ 1113 echo "+ touch -md $$time $$file" && \ 1114 touch -md $$time $$file; \ 1115 else \ 1116 echo >&2 "$$file: warning: does not match repository"; \ 1117 fi || exit; \ 1118 done; \ 1119 fi 1120 $(SET_TIMESTAMP_DEP) leapseconds $(LEAP_DEPS) 1121 for file in $(MANTXTS); do \ 1122 $(SET_TIMESTAMP_DEP) $$file $${file%.txt} workman.sh || \ 1123 exit; \ 1124 done 1125 $(SET_TIMESTAMP_DEP) version $(VERSION_DEPS) 1126 $(SET_TIMESTAMP_DEP) tzdata.zi $(TZDATA_ZI_DEPS) 1127 touch $@ 1128set-tzs-timestamp.out: $(TZS) 1129 $(SET_TIMESTAMP_DEP) $(TZS) $(TZS_DEPS) 1130 touch $@ 1131 1132# The zics below ensure that each data file can stand on its own. 1133# We also do an all-files run to catch links to links. 1134 1135public.ck: $(VERSION_DEPS) 1136 rm -fr $@d 1137 mkdir $@d 1138 ln $(VERSION_DEPS) $@d 1139 cd $@d \ 1140 && $(MAKE) CFLAGS='$(GCC_DEBUG_FLAGS)' TZDIR='$(TZDIR)' ALL 1141 for i in $(TDATA_TO_CHECK) \ 1142 tzdata.zi vanguard.zi main.zi rearguard.zi; \ 1143 do \ 1144 $@d/zic -v -d $@d/zoneinfo $@d/$$i || exit; \ 1145 done 1146 $@d/zic -v -d $@d/zoneinfo-all $(TDATA_TO_CHECK) 1147 : 1148 : Also check 'backzone' syntax. 1149 rm $@d/main.zi 1150 cd $@d && $(MAKE) PACKRATDATA=backzone main.zi 1151 $@d/zic -d $@d/zoneinfo main.zi 1152 rm $@d/main.zi 1153 cd $@d && \ 1154 $(MAKE) PACKRATDATA=backzone PACKRATLIST=zone.tab main.zi 1155 $@d/zic -d $@d/zoneinfo main.zi 1156 : 1157 rm -fr $@d 1158 touch $@ 1159 1160# Check that the code works under various alternative 1161# implementations of time_t. 1162check_time_t_alternatives: $(TIME_T_ALTERNATIVES) 1163$(TIME_T_ALTERNATIVES_TAIL): $(TIME_T_ALTERNATIVES_HEAD) 1164$(TIME_T_ALTERNATIVES): $(VERSION_DEPS) 1165 rm -fr $@d 1166 mkdir $@d 1167 ln $(VERSION_DEPS) $@d 1168 case $@ in \ 1169 *32_t*) range=-2147483648,2147483648;; \ 1170 u*) range=0,4294967296;; \ 1171 *) range=-4294967296,4294967296;; \ 1172 esac && \ 1173 wd=$$PWD && \ 1174 zones=$$($(AWK) '/^[^#]/ { print $$3 }' <zone1970.tab) && \ 1175 if test $@ = $(TIME_T_ALTERNATIVES_HEAD); then \ 1176 range_target=; \ 1177 else \ 1178 range_target=to$$range.tzs; \ 1179 fi && \ 1180 (cd $@d && \ 1181 $(MAKE) TOPDIR="$$wd/$@d" \ 1182 CFLAGS='$(CFLAGS) -Dtime_tz='"'$(@:.ck=)'" \ 1183 REDO='$(REDO)' \ 1184 D="$$wd/$@d" \ 1185 TZS_YEAR="$$range" TZS_CUTOFF_FLAG="-t $$range" \ 1186 install $$range_target) && \ 1187 test $@ = $(TIME_T_ALTERNATIVES_HEAD) || { \ 1188 (cd $(TIME_T_ALTERNATIVES_HEAD)d && \ 1189 $(MAKE) TOPDIR="$$wd/$@d" \ 1190 TZS_YEAR="$$range" TZS_CUTOFF_FLAG="-t $$range" \ 1191 D="$$wd/$@d" \ 1192 to$$range.tzs) && \ 1193 $(SETUP_DIFF_TZS) && \ 1194 $$DIFF_TZS $(TIME_T_ALTERNATIVES_HEAD)d/to$$range.tzs \ 1195 $@d/to$$range.tzs && \ 1196 if diff -q Makefile Makefile 2>/dev/null; then \ 1197 quiet_option='-q'; \ 1198 else \ 1199 quiet_option=''; \ 1200 fi && \ 1201 diff $$quiet_option -r $(TIME_T_ALTERNATIVES_HEAD)d/etc \ 1202 $@d/etc && \ 1203 diff $$quiet_option -r \ 1204 $(TIME_T_ALTERNATIVES_HEAD)d/usr/share \ 1205 $@d/usr/share; \ 1206 } 1207 touch $@ 1208 1209TRADITIONAL_ASC = \ 1210 tzcode$(VERSION).tar.gz.asc \ 1211 tzdata$(VERSION).tar.gz.asc 1212REARGUARD_ASC = \ 1213 tzdata$(VERSION)-rearguard.tar.gz.asc 1214ALL_ASC = $(TRADITIONAL_ASC) $(REARGUARD_ASC) \ 1215 tzdb-$(VERSION).tar.lz.asc 1216 1217tarballs rearguard_tarballs tailored_tarballs traditional_tarballs \ 1218signatures rearguard_signatures traditional_signatures: \ 1219 version set-timestamps.out rearguard.zi vanguard.zi 1220 read -r VERSION <version && \ 1221 $(MAKE) AWK='$(AWK)' VERSION="$$VERSION" $@_version 1222 1223# These *_version rules are intended for use if VERSION is set by some 1224# other means. Ordinarily these rules are used only by the above 1225# non-_version rules, which set VERSION on the 'make' command line. 1226tarballs_version: traditional_tarballs_version rearguard_tarballs_version \ 1227 tzdb-$(VERSION).tar.lz 1228rearguard_tarballs_version: \ 1229 tzdata$(VERSION)-rearguard.tar.gz 1230traditional_tarballs_version: \ 1231 tzcode$(VERSION).tar.gz tzdata$(VERSION).tar.gz 1232tailored_tarballs_version: \ 1233 tzdata$(VERSION)-tailored.tar.gz 1234signatures_version: $(ALL_ASC) 1235rearguard_signatures_version: $(REARGUARD_ASC) 1236traditional_signatures_version: $(TRADITIONAL_ASC) 1237 1238tzcode$(VERSION).tar.gz: set-timestamps.out 1239 $(SETUP_TAR) && \ 1240 $$TAR -cf - \ 1241 $(COMMON) $(DOCS) $(SOURCES) | \ 1242 gzip $(GZIPFLAGS) >$@.out 1243 mv $@.out $@ 1244 1245tzdata$(VERSION).tar.gz: set-timestamps.out 1246 $(SETUP_TAR) && \ 1247 $$TAR -cf - $(TZDATA_DIST) | \ 1248 gzip $(GZIPFLAGS) >$@.out 1249 mv $@.out $@ 1250 1251# Create empty files with a reproducible timestamp. 1252CREATE_EMPTY = TZ=UTC0 touch -mt 202010122253.00 1253 1254# The obsolescent *rearguard* targets and related macros are present 1255# for backwards compatibility with tz releases 2018e through 2022a. 1256# They should go away eventually. To build rearguard tarballs you 1257# can instead use 'make DATAFORM=rearguard tailored_tarballs'. 1258tzdata$(VERSION)-rearguard.tar.gz: rearguard.zi set-timestamps.out 1259 rm -fr $@.dir 1260 mkdir $@.dir 1261 ln $(TZDATA_DIST) $@.dir 1262 cd $@.dir && rm -f $(TDATA) $(PACKRATDATA) version 1263 for f in $(TDATA) $(PACKRATDATA); do \ 1264 rearf=$@.dir/$$f; \ 1265 $(AWK) -v DATAFORM=rearguard -f ziguard.awk $$f >$$rearf && \ 1266 $(SET_TIMESTAMP_DEP) $$rearf ziguard.awk $$f || exit; \ 1267 done 1268 sed '1s/$$/-rearguard/' <version >$@.dir/version 1269 : The dummy pacificnew pacifies TZUpdater 2.3.1 and earlier. 1270 $(CREATE_EMPTY) $@.dir/pacificnew 1271 touch -mr version $@.dir/version 1272 $(SETUP_TAR) && \ 1273 (cd $@.dir && \ 1274 $$TAR -cf - \ 1275 $(TZDATA_DIST) pacificnew | \ 1276 gzip $(GZIPFLAGS)) >$@.out 1277 mv $@.out $@ 1278 1279# Create a tailored tarball suitable for TZUpdater and compatible tools. 1280# For example, 'make DATAFORM=vanguard tailored_tarballs' makes a tarball 1281# useful for testing whether TZUpdater supports vanguard form. 1282# The generated tarball is not byte-for-byte equivalent to a hand-tailored 1283# traditional tarball, as data entries are put into 'etcetera' even if they 1284# came from some other source file. However, the effect should be the same 1285# for ordinary use, which reads all the source files. 1286tzdata$(VERSION)-tailored.tar.gz: set-timestamps.out 1287 rm -fr $@.dir 1288 mkdir $@.dir 1289 : The dummy pacificnew pacifies TZUpdater 2.3.1 and earlier. 1290 if test $(DATAFORM) = vanguard; then \ 1291 pacificnew=; \ 1292 else \ 1293 pacificnew=pacificnew; \ 1294 fi && \ 1295 cd $@.dir && \ 1296 $(CREATE_EMPTY) $(PRIMARY_YDATA) $(NDATA) backward \ 1297 $$pacificnew 1298 (grep '^#' tzdata.zi && echo && cat $(DATAFORM).zi) \ 1299 >$@.dir/etcetera 1300 touch -mr tzdata.zi $@.dir/etcetera 1301 sed -n \ 1302 -e '/^# *version *\(.*\)/h' \ 1303 -e '/^# *ddeps */H' \ 1304 -e '$$!d' \ 1305 -e 'g' \ 1306 -e 's/^# *version *//' \ 1307 -e 's/\n# *ddeps */-/' \ 1308 -e 's/ /-/g' \ 1309 -e 'p' \ 1310 <tzdata.zi >$@.dir/version 1311 touch -mr version $@.dir/version 1312 links= && \ 1313 for file in $(TZDATA_DIST); do \ 1314 test -f $@.dir/$$file || links="$$links $$file"; \ 1315 done && \ 1316 ln $$links $@.dir 1317 $(SETUP_TAR) && \ 1318 (cd $@.dir && \ 1319 $$TAR -cf - * | gzip $(GZIPFLAGS)) >$@.out 1320 mv $@.out $@ 1321 1322tzdb-$(VERSION).tar.lz: set-timestamps.out set-tzs-timestamp.out 1323 rm -fr tzdb-$(VERSION) 1324 mkdir tzdb-$(VERSION) 1325 ln $(ENCHILADA) tzdb-$(VERSION) 1326 $(SET_TIMESTAMP) tzdb-$(VERSION) tzdb-$(VERSION)/* 1327 $(SETUP_TAR) && \ 1328 $$TAR -cf - tzdb-$(VERSION) | lzip -9 >$@.out 1329 mv $@.out $@ 1330 1331tzcode$(VERSION).tar.gz.asc: tzcode$(VERSION).tar.gz 1332tzdata$(VERSION).tar.gz.asc: tzdata$(VERSION).tar.gz 1333tzdata$(VERSION)-rearguard.tar.gz.asc: tzdata$(VERSION)-rearguard.tar.gz 1334tzdb-$(VERSION).tar.lz.asc: tzdb-$(VERSION).tar.lz 1335$(ALL_ASC): 1336 $(GPG) --armor --detach-sign $? 1337 1338TYPECHECK_CFLAGS = $(CFLAGS) -DTYPECHECK -D__time_t_defined -D_TIME_T 1339typecheck: long-long.ck unsigned.ck 1340long-long.ck unsigned.ck: $(VERSION_DEPS) 1341 rm -fr $@d 1342 mkdir $@d 1343 ln $(VERSION_DEPS) $@d 1344 cd $@d && \ 1345 case $@ in \ 1346 long-long.*) i="long long";; \ 1347 unsigned.* ) i="unsigned" ;; \ 1348 esac && \ 1349 $(MAKE) \ 1350 CFLAGS="$(TYPECHECK_CFLAGS) \"-Dtime_t=$$i\"" \ 1351 TOPDIR="$$PWD" \ 1352 install 1353 $@d/zdump -i -c 1970,1971 Europe/Rome 1354 touch $@ 1355 1356zonenames: tzdata.zi 1357 @$(AWK) '/^Z/ { print $$2 } /^L/ { print $$3 }' tzdata.zi 1358 1359asctime.o: private.h 1360date.o: private.h 1361difftime.o: private.h 1362localtime.o: private.h tzdir.h tzfile.h 1363strftime.o: localtime.c private.h tzdir.h tzfile.h 1364zdump.o: private.h version.h 1365zic.o: private.h tzdir.h tzfile.h version.h 1366 1367.PHONY: ALL INSTALL all 1368.PHONY: check check_mild check_time_t_alternatives 1369.PHONY: check_web check_zishrink 1370.PHONY: clean clean_misc commit-leap-seconds.list dummy.zd 1371.PHONY: fetch-leap-seconds.list force_tzs 1372.PHONY: install maintainer-clean names 1373.PHONY: posix_only posix_right public 1374.PHONY: rearguard_signatures rearguard_signatures_version 1375.PHONY: rearguard_tarballs rearguard_tarballs_version 1376.PHONY: right_only right_posix signatures signatures_version 1377.PHONY: tarballs tarballs_version 1378.PHONY: traditional_signatures traditional_signatures_version 1379.PHONY: traditional_tarballs traditional_tarballs_version 1380.PHONY: tailored_tarballs tailored_tarballs_version 1381.PHONY: typecheck 1382.PHONY: zonenames zones 1383.PHONY: $(ZDS) 1384