time/Makefile

   1 # Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   4 # The GNU C Library is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU Library General Public License as
   6 # published by the Free Software Foundation; either version 2 of the
   7 # License, or (at your option) any later version.
   8
   9 # The GNU C Library is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # Library General Public License for more details.
  13
  14 # You should have received a copy of the GNU Library General Public
  15 # License along with the GNU C Library; see the file COPYING.LIB.  If
  16 # not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 # Cambridge, MA 02139, USA.
  18
  19 #
  20 #       Makefile for time routines
  21 #
  22 subdir  := time
  23
  24 headers := time.h sys/time.h sys/timeb.h
  25 distribute := tzfile.h private.h scheck.c ialloc.c emkdir.c yearistype
  26 extra-objs = scheck.o ialloc.o emkdir.o zonenames $(tzfiles:%=z.%)
  27
  28 routines        := offtime asctime clock ctime difftime gmtime  \
  29                    localtime mktime strftime time tzset tzfile  \
  30                    gettimeofday settimeofday adjtime            \
  31                    getitimer setitimer                          \
  32                    stime dysize timegm ftime
  33
  34 others  := ap zdump zic
  35 tests   := test_time clocktest
  36
  37 tzfiles := africa antarctica asia australasia europe northamerica \
  38            southamerica etcetera factory systemv backward
  39 # pacificnew doesn't compile; if it is to be used, it should be included in
  40 # northamerica.
  41 distribute := $(distribute) $(tzfiles) leapseconds pacificnew
  42
  43 install-sbin := zic zdump
  44
  45 include ../Makeconfig   # Get objpfx defined so we can use it below.
  46
  47 # zonenames uses this variable.
  48 define nl
  49
  50
  51 endef
  52 include $(objpfx)zonenames
  53
  54 # Make these absolute file names.
  55 installed-localtime-file := $(firstword $(filter /%,$(localtime-file)) \
  56                                         $(addprefix $(zonedir)/, \
  57                                                     $(localtime-file)))
  58 installed-posixrules-file := $(firstword $(filter /%,$(posixrules-file)) \
  59                                          $(addprefix $(zonedir)/, \
  60                                                      $(posixrules-file)))
  61
  62 ifndef cross-compiling
  63 # Don't try to install the zoneinfo files since we can't run zic.
  64 install-others = $(addprefix $(zonedir)/,$(zonenames)) \
  65                  $(installed-localtime-file) $(installed-posixrules-file)
  66 endif
  67
  68 include ../Rules
  69
  70
  71 $(tzfiles:%=$(objpfx)z.%): $(objpfx)z.%: % Makefile
  72 # Kludge alert: we use an implicit rule (in what we are generating here)
  73 # because that is the only way to tell Make that the one command builds all
  74 # the files.
  75         (echo 'define $*-zones'                                         ;\
  76          awk '$$1 == "Zone" { print $$2 } $$1 == "Link" { print $$3 }' $^;\
  77          echo 'endef'                                                   ;\
  78          echo '$*-zones := $$(subst $$(nl), ,$$($*-zones))'             ;\
  79          echo 'ifdef $*-zones'                                          ;\
  80          echo '$$(addprefix $$(datadir)/zone%/,$$($*-zones)): \'        ;\
  81          echo '$< $$(objpfx)zic leapseconds yearistype'                 ;\
  82          echo ' $$(tzcompile)'                                          ;\
  83          echo 'endif'                                                   ;\
  84          echo 'zonenames := $$(zonenames) $$($*-zones)'                 ;\
  85         ) > $@.new
  86         mv $@.new $@
  87 $(objpfx)zonenames: Makefile
  88         (for file in $(tzfiles); do \
  89            echo "include \$$(objpfx)z.$$file"; \
  90          done) > $@.new
  91         mv $@.new $@
  92
  93 .PHONY: echo-zonenames
  94 echo-zonenames: zonenames
  95         @echo 'Known zones: $(zonenames)'
  96
  97
  98 # Although $(zonedir) gets compiled into zic, it is useful to always
  99 # specify it with -d on the command line so that it can be overridden on
 100 # the command line of `make install' (e.g., "make install prefix=/foo").
 101 zic-cmd = $(dir $(word 2,$^))$(notdir $(word 2,$^)) -d $(zonedir)
 102 define tzcompile
 103 $(zic-cmd) -L $(word 3,$^) -y $(dir $(word 4,$^))$(notdir $(word 4,$^)) $<
 104 endef
 105
 106 ifdef localtime
 107 $(installed-localtime-file): $(zonedir)/$(localtime) $(objpfx)zic
 108         $(zic-cmd) -l $(localtime)
 109 endif
 110 ifdef posixrules
 111 $(installed-posixrules-file): $(zonedir)/$(posixrules) $(objpfx)zic
 112         $(zic-cmd) -p $(posixrules)
 113 endif
 114
 115
 116 $(objpfx)zic: $(objpfx)scheck.o $(objpfx)ialloc.o $(objpfx)emkdir.o
 117
 118 $(objpfx)tzfile.o: tzfile.c; $(tz-cc)
 119 $(objpfx)zic.o: zic.c; $(tz-cc)
 120
 121 # Some versions of GNU make have a bug with backslashes in define directives.
 122 tz-cc = $(COMPILE.c) $(+gcc-nowarn) \
 123              -DTZDIR='"$(zonedir)"' \
 124              -DTZDEFAULT='"$(localtime-file)"' \
 125              -DTZDEFRULES='"$(posixrules-file)"' \
 126              $< $(OUTPUT_OPTION)