# Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
# This file is part of the GNU C Library.

# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.

# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Library General Public License for more details.

# You should have received a copy of the GNU Library General Public
# License along with the GNU C Library; see the file COPYING.LIB.  If
# not, write to the Free Software Foundation, Inc., 675 Mass Ave,
# Cambridge, MA 02139, USA.

#
#	Makefile for time routines
#
subdir	:= time

headers	:= time.h sys/time.h sys/timeb.h timebits.h
distribute := tzfile.h private.h scheck.c ialloc.c yearistype	\
	      iso3166.tab zone.tab tzselect.ksh checktab.awk
extra-objs = scheck.o ialloc.o $(tzfiles:%=z.%)

routines	:= offtime asctime clock ctime ctime_r difftime	\
		   gmtime localtime mktime strftime time tzset	\
		   tzfile gettimeofday settimeofday adjtime	\
		   getitimer setitimer				\
		   stime dysize timegm ftime			\
		   strptime

others	:= ap zdump zic
tests	:= test_time clocktest test-tz

tzfiles := africa antarctica asia australasia europe northamerica \
	   southamerica etcetera factory systemv backward \
	   solar87 solar88 solar89
# pacificnew doesn't compile; if it is to be used, it should be included in
# northamerica.
distribute := $(distribute) $(tzfiles) leapseconds pacificnew

install-sbin := zic zdump

all: # Make this the default target; it will be defined in Rules.

include ../Makeconfig	# Get objpfx defined so we can use it below.

# z.* use this variable.
define nl


endef
-include $(addprefix $(objpfx)z.,$(tzfiles))

# Make these absolute file names.
installed-localtime-file := $(firstword $(filter /%,$(localtime-file)) \
					$(addprefix $(zonedir)/, \
						    $(localtime-file)))
installed-posixrules-file := $(firstword $(filter /%,$(posixrules-file)) \
					 $(addprefix $(zonedir)/, \
						     $(posixrules-file)))

ifeq ($(cross-compiling),no)
# Don't try to install the zoneinfo files since we can't run zic.
install-others = $(addprefix $(zonedir)/,$(zonenames) \
					 $(zonenames:%=posix/%) \
					 $(zonenames:%=right/%)) \
		 $(installed-localtime-file) $(installed-posixrules-file)
endif

include ../Rules


$(tzfiles:%=$(objpfx)z.%): $(objpfx)z.%: % Makefile
# Kludge alert: we use an implicit rule (in what we are generating here)
# because that is the only way to tell Make that the one command builds all
# the files.
	(echo 'define $*-zones'						;\
	 awk '$$1 == "Zone" { print $$2 } $$1 == "Link" { print $$3 }' $^;\
	 echo 'endef'							;\
	 echo '$*-zones := $$(subst $$(nl), ,$$($*-zones))'		;\
	 echo 'ifdef $*-zones'						;\
	 echo '$$(addprefix $$(datadir)/zone%/right/,$$($*-zones)): \'	;\
	 echo '$< $$(objpfx)zic leapseconds yearistype'			;\
	 echo '	$$(tzcompile)'						;\
	 echo '$$(addprefix $$(datadir)/zone%/posix/,$$($*-zones)): \'	;\
	 echo '$< $$(objpfx)zic /dev/null yearistype'			;\
	 echo '	$$(tzcompile)'						;\
	 echo '$$(addprefix $$(datadir)/zone%/,$$($*-zones)): \'	;\
	 echo '$< $$(objpfx)zic $$(leapseconds) yearistype'		;\
	 echo '	$$(tzcompile)'						;\
	 echo 'endif'							;\
	 echo 'zonenames := $$(zonenames) $$($*-zones)'			;\
	) > $@.new
	mv $@.new $@

.PHONY: echo-zonenames
echo-zonenames: zonenames
	@echo 'Known zones: $(zonenames)'


# Although $(zonedir) gets compiled into zic, it is useful to always
# specify it with -d on the command line so that it can be overridden on
# the command line of `make install' (e.g., "make install prefix=/foo").
zic-cmd = $(built-program-cmd) -d $(zonedir)
tzcompile = $(zic-cmd)$(target-zone-flavor) -L $(word 3,$^) \
	    -y $(dir $(word 4,$^))$(notdir $(word 4,$^)) $<

# The source files specify the zone names relative to the -d directory,
# so for the posix/ and right/ flavors we need to pass -d $(zonedir)/posix
# and the like.  This magic extracts /posix or /right if it's the first
# component after $(zonedir) in the target name $@.
target-zone-flavor = $(filter /posix /right, \
			      /$(firstword $(subst /, , \
					   $(patsubst $(zonedir)/%,%,$@))))

ifdef localtime
$(installed-localtime-file): $(zonedir)/$(localtime) $(objpfx)zic
	$(make-target-directory)
	if test -r $@; then \
	  echo Site timezone NOT reset to Factory.; \
	else \
	  rm -f $@T; \
	  $(SHELL) $(top_absdir)/rellns-sh $< $@T; \
	  mv -f $@T $@; \
	fi
endif
ifdef posixrules
$(installed-posixrules-file): $(zonedir)/$(posixrules) $(objpfx)zic
	$(zic-cmd) -p $(posixrules)
endif


$(objpfx)zic: $(objpfx)scheck.o $(objpfx)ialloc.o

tz-cflags = -DTZDIR='"$(zonedir)"' \
	    -DTZDEFAULT='"$(localtime-file)"' \
	    -DTZDEFRULES='"$(posixrules-file)"'

CFLAGS-zdump.c = -Wno-strict-prototypes -DNOID
CFLAGS-zic.c = -Wno-strict-prototypes -DNOID $(tz-cflags)
CFLAGS-ialloc.c = -Wno-strict-prototypes -DNOID
CFLAGS-scheck.c = -Wno-strict-prototypes -DNOID
CFLAGS-tzfile.c = $(tz-cflags)