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+# Copyright (C) 1991, 1992, 1993, 1994, 1995 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
+distribute := tzfile.h private.h scheck.c ialloc.c emkdir.c yearistype
+extra-objs = scheck.o ialloc.o emkdir.o zonenames $(tzfiles:%=z.%)
+
+routines := offtime asctime clock ctime difftime gmtime \
+ localtime mktime strftime time tzset tzfile \
+ gettimeofday settimeofday adjtime \
+ getitimer setitimer \
+ stime dysize timegm ftime
+
+others := ap zdump zic
+tests := test_time clocktest
+
+tzfiles := africa antarctica asia australasia europe northamerica \
+ southamerica etcetera factory systemv backward
+# 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
+
+include ../Makeconfig # Get objpfx defined so we can use it below.
+
+# zonenames uses this variable.
+define nl
+
+
+endef
+include $(objpfx)zonenames
+
+# 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)))
+
+ifndef cross-compiling
+# Don't try to install the zoneinfo files since we can't run zic.
+install-others = $(addprefix $(zonedir)/,$(zonenames)) \
+ $(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 $$(datadir)/zone%/,$$($*-zones)): \' ;\
+ echo '$< $$(objpfx)zic leapseconds yearistype' ;\
+ echo ' $$(tzcompile)' ;\
+ echo 'endif' ;\
+ echo 'zonenames := $$(zonenames) $$($*-zones)' ;\
+ ) > $@.new
+ mv $@.new $@
+$(objpfx)zonenames: Makefile
+ (for file in $(tzfiles); do \
+ echo "include \$$(objpfx)z.$$file"; \
+ done) > $@.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 = $(dir $(word 2,$^))$(notdir $(word 2,$^)) -d $(zonedir)
+define tzcompile
+$(zic-cmd) -L $(word 3,$^) -y $(dir $(word 4,$^))$(notdir $(word 4,$^)) $<
+endef
+
+ifdef localtime
+$(installed-localtime-file): $(zonedir)/$(localtime) $(objpfx)zic
+ $(zic-cmd) -l $(localtime)
+endif
+ifdef posixrules
+$(installed-posixrules-file): $(zonedir)/$(posixrules) $(objpfx)zic
+ $(zic-cmd) -p $(posixrules)
+endif
+
+
+$(objpfx)zic: $(objpfx)scheck.o $(objpfx)ialloc.o $(objpfx)emkdir.o
+
+$(objpfx)tzfile.o: tzfile.c; $(tz-cc)
+$(objpfx)zic.o: zic.c; $(tz-cc)
+
+# Some versions of GNU make have a bug with backslashes in define directives.
+tz-cc = $(COMPILE.c) $(+gcc-nowarn) \
+ -DTZDIR='"$(zonedir)"' \
+ -DTZDEFAULT='"$(localtime-file)"' \
+ -DTZDEFRULES='"$(posixrules-file)"' \
+ $< $(OUTPUT_OPTION)