po/Makefile.in.in

   1 # Makefile for PO directory in any package using GNU gettext.
   2 # Copyright (C) 1995-1997, 2000-2007, 2009-2010 by Ulrich Drepper <drepper@gnu.ai.mit.edu>
   3 #
   4 # This file can be copied and used freely without restrictions.  It can
   5 # be used in projects which are not available under the GNU General Public
   6 # License but which still want to provide support for the GNU gettext
   7 # functionality.
   8 # Please note that the actual code of GNU gettext is covered by the GNU
   9 # General Public License and is *not* in the public domain.
  10 #
  11 # Origin: gettext-0.18
  12 GETTEXT_MACRO_VERSION = 0.18
  13
  14 PACKAGE = @PACKAGE@
  15 VERSION = @VERSION@
  16 PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
  17
  18 SHELL = /bin/sh
  19 @SET_MAKE@
  20
  21 srcdir = @srcdir@
  22 top_srcdir = @top_srcdir@
  23 VPATH = @srcdir@
  24
  25 prefix = @prefix@
  26 exec_prefix = @exec_prefix@
  27 datarootdir = @datarootdir@
  28 datadir = @datadir@
  29 localedir = @localedir@
  30 gettextsrcdir = $(datadir)/gettext/po
  31
  32 INSTALL = @INSTALL@
  33 INSTALL_DATA = @INSTALL_DATA@
  34
  35 # We use $(mkdir_p).
  36 # In automake <= 1.9.x, $(mkdir_p) is defined either as "mkdir -p --" or as
  37 # "$(mkinstalldirs)" or as "$(install_sh) -d". For these automake versions,
  38 # @install_sh@ does not start with $(SHELL), so we add it.
  39 # In automake >= 1.10, @mkdir_p@ is derived from ${MKDIR_P}, which is defined
  40 # either as "/path/to/mkdir -p" or ".../install-sh -c -d". For these automake
  41 # versions, $(mkinstalldirs) and $(install_sh) are unused.
  42 mkinstalldirs = $(SHELL) @install_sh@ -d
  43 install_sh = $(SHELL) @install_sh@
  44 MKDIR_P = @MKDIR_P@
  45 mkdir_p = @mkdir_p@
  46
  47 GMSGFMT_ = @GMSGFMT@
  48 GMSGFMT_no = @GMSGFMT@
  49 GMSGFMT_yes = @GMSGFMT_015@
  50 GMSGFMT = $(GMSGFMT_$(USE_MSGCTXT))
  51 MSGFMT_ = @MSGFMT@
  52 MSGFMT_no = @MSGFMT@
  53 MSGFMT_yes = @MSGFMT_015@
  54 MSGFMT = $(MSGFMT_$(USE_MSGCTXT))
  55 XGETTEXT_ = @XGETTEXT@
  56 XGETTEXT_no = @XGETTEXT@
  57 XGETTEXT_yes = @XGETTEXT_015@
  58 XGETTEXT = $(XGETTEXT_$(USE_MSGCTXT))
  59 MSGMERGE = msgmerge
  60 MSGMERGE_UPDATE = @MSGMERGE@ --update
  61 MSGINIT = msginit
  62 MSGCONV = msgconv
  63 MSGFILTER = msgfilter
  64
  65 POFILES = @POFILES@
  66 GMOFILES = @GMOFILES@
  67 UPDATEPOFILES = @UPDATEPOFILES@
  68 DUMMYPOFILES = @DUMMYPOFILES@
  69 DISTFILES.common = Makefile.in.in remove-potcdate.sin \
  70 $(DISTFILES.common.extra1) $(DISTFILES.common.extra2) $(DISTFILES.common.extra3)
  71 DISTFILES = $(DISTFILES.common) Makevars POTFILES.in \
  72 $(POFILES) $(GMOFILES) \
  73 $(DISTFILES.extra1) $(DISTFILES.extra2) $(DISTFILES.extra3)
  74
  75 POTFILES = \
  76
  77 CATALOGS = @CATALOGS@
  78
  79 # Makevars gets inserted here. (Don't remove this line!)
  80
  81 .SUFFIXES:
  82 .SUFFIXES: .po .gmo .mo .sed .sin .nop .po-create .po-update
  83
  84 .po.mo:
  85         @echo "$(MSGFMT) -c -o $@ $<"; \
  86         $(MSGFMT) -c -o t-$@ $< && mv t-$@ $@
  87
  88 .po.gmo:
  89         @lang=`echo $* | sed -e 's,.*/,,'`; \
  90         test "$(srcdir)" = . && cdcmd="" || cdcmd="cd $(srcdir) && "; \
  91         echo "$${cdcmd}rm -f $${lang}.gmo && $(GMSGFMT) -c --statistics --verbose -o $${lang}.gmo $${lang}.po"; \
  92         cd $(srcdir) && rm -f $${lang}.gmo && $(GMSGFMT) -c --statistics --verbose -o t-$${lang}.gmo $${lang}.po && mv t-$${lang}.gmo $${lang}.gmo
  93
  94 .sin.sed:
  95         sed -e '/^#/d' $< > t-$@
  96         mv t-$@ $@
  97
  98
  99 all: check-macro-version all-@USE_NLS@
 100
 101 all-yes: stamp-po
 102 all-no:
 103
 104 # Ensure that the gettext macros and this Makefile.in.in are in sync.
 105 check-macro-version:
 106         @test "$(GETTEXT_MACRO_VERSION)" = "@GETTEXT_MACRO_VERSION@" \
 107           || { echo "*** error: gettext infrastructure mismatch: using a Makefile.in.in from gettext version $(GETTEXT_MACRO_VERSION) but the autoconf macros are from gettext version @GETTEXT_MACRO_VERSION@" 1>&2; \
 108                exit 1; \
 109              }
 110
 111 # $(srcdir)/$(DOMAIN).pot is only created when needed. When xgettext finds no
 112 # internationalized messages, no $(srcdir)/$(DOMAIN).pot is created (because
 113 # we don't want to bother translators with empty POT files). We assume that
 114 # LINGUAS is empty in this case, i.e. $(POFILES) and $(GMOFILES) are empty.
 115 # In this case, stamp-po is a nop (i.e. a phony target).
 116
 117 # stamp-po is a timestamp denoting the last time at which the CATALOGS have
 118 # been loosely updated. Its purpose is that when a developer or translator
 119 # checks out the package via CVS, and the $(DOMAIN).pot file is not in CVS,
 120 # "make" will update the $(DOMAIN).pot and the $(CATALOGS), but subsequent
 121 # invocations of "make" will do nothing. This timestamp would not be necessary
 122 # if updating the $(CATALOGS) would always touch them; however, the rule for
 123 # $(POFILES) has been designed to not touch files that don't need to be
 124 # changed.
 125 stamp-po: $(srcdir)/$(DOMAIN).pot
 126         test ! -f $(srcdir)/$(DOMAIN).pot || \
 127           test -z "$(GMOFILES)" || $(MAKE) $(GMOFILES)
 128         @test ! -f $(srcdir)/$(DOMAIN).pot || { \
 129           echo "touch stamp-po" && \
 130           echo timestamp > stamp-poT && \
 131           mv stamp-poT stamp-po; \
 132         }
 133
 134 # Note: Target 'all' must not depend on target '$(DOMAIN).pot-update',
 135 # otherwise packages like GCC can not be built if only parts of the source
 136 # have been downloaded.
 137
 138 # This target rebuilds $(DOMAIN).pot; it is an expensive operation.
 139 # Note that $(DOMAIN).pot is not touched if it doesn't need to be changed.
 140 $(DOMAIN).pot-update: $(POTFILES) $(srcdir)/POTFILES.in remove-potcdate.sed
 141         if LC_ALL=C grep 'GNU @PACKAGE@' $(top_srcdir)/* 2>/dev/null | grep -v 'libtool:' >/dev/null; then \
 142           package_gnu='GNU '; \
 143         else \
 144           package_gnu=''; \
 145         fi; \
 146         if test -n '$(MSGID_BUGS_ADDRESS)' || test '$(PACKAGE_BUGREPORT)' = '@'PACKAGE_BUGREPORT'@'; then \
 147           msgid_bugs_address='$(MSGID_BUGS_ADDRESS)'; \
 148         else \
 149           msgid_bugs_address='$(PACKAGE_BUGREPORT)'; \
 150         fi; \
 151         case `$(XGETTEXT) --version | sed 1q | sed -e 's,^[^0-9]*,,'` in \
 152           '' | 0.[0-9] | 0.[0-9].* | 0.1[0-5] | 0.1[0-5].* | 0.16 | 0.16.[0-1]*) \
 153             $(XGETTEXT) --default-domain=$(DOMAIN) --directory=$(top_srcdir) \
 154               --add-comments=TRANSLATORS: $(XGETTEXT_OPTIONS) @XGETTEXT_EXTRA_OPTIONS@ \
 155               --files-from=$(srcdir)/POTFILES.in \
 156               --copyright-holder='$(COPYRIGHT_HOLDER)' \
 157               --msgid-bugs-address="$$msgid_bugs_address" \
 158             ;; \
 159           *) \
 160             $(XGETTEXT) --default-domain=$(DOMAIN) --directory=$(top_srcdir) \
 161               --add-comments=TRANSLATORS: $(XGETTEXT_OPTIONS) @XGETTEXT_EXTRA_OPTIONS@ \
 162               --files-from=$(srcdir)/POTFILES.in \
 163               --copyright-holder='$(COPYRIGHT_HOLDER)' \
 164               --package-name="$${package_gnu}@PACKAGE@" \
 165               --package-version='@VERSION@' \
 166               --msgid-bugs-address="$$msgid_bugs_address" \
 167             ;; \
 168         esac
 169         test ! -f $(DOMAIN).po || { \
 170           if test -f $(srcdir)/$(DOMAIN).pot; then \
 171             sed -f remove-potcdate.sed < $(srcdir)/$(DOMAIN).pot > $(DOMAIN).1po && \
 172             sed -f remove-potcdate.sed < $(DOMAIN).po > $(DOMAIN).2po && \
 173             if cmp $(DOMAIN).1po $(DOMAIN).2po >/dev/null 2>&1; then \
 174               rm -f $(DOMAIN).1po $(DOMAIN).2po $(DOMAIN).po; \
 175             else \
 176               rm -f $(DOMAIN).1po $(DOMAIN).2po $(srcdir)/$(DOMAIN).pot && \
 177               mv $(DOMAIN).po $(srcdir)/$(DOMAIN).pot; \
 178             fi; \
 179           else \
 180             mv $(DOMAIN).po $(srcdir)/$(DOMAIN).pot; \
 181           fi; \
 182         }
 183
 184 # This rule has no dependencies: we don't need to update $(DOMAIN).pot at
 185 # every "make" invocation, only create it when it is missing.
 186 # Only "make $(DOMAIN).pot-update" or "make dist" will force an update.
 187 $(srcdir)/$(DOMAIN).pot:
 188         $(MAKE) $(DOMAIN).pot-update
 189
 190 # This target rebuilds a PO file if $(DOMAIN).pot has changed.
 191 # Note that a PO file is not touched if it doesn't need to be changed.
 192 $(POFILES): $(srcdir)/$(DOMAIN).pot
 193         @lang=`echo $@ | sed -e 's,.*/,,' -e 's/\.po$$//'`; \
 194         if test -f "$(srcdir)/$${lang}.po"; then \
 195           test "$(srcdir)" = . && cdcmd="" || cdcmd="cd $(srcdir) && "; \
 196           echo "$${cdcmd}$(MSGMERGE_UPDATE) $(MSGMERGE_OPTIONS) --lang=$${lang} $${lang}.po $(DOMAIN).pot"; \
 197           cd $(srcdir) \
 198             && { case `$(MSGMERGE_UPDATE) --version | sed 1q | sed -e 's,^[^0-9]*,,'` in \
 199                    '' | 0.[0-9] | 0.[0-9].* | 0.1[0-7] | 0.1[0-7].*) \
 200                      $(MSGMERGE_UPDATE) $(MSGMERGE_OPTIONS) $${lang}.po $(DOMAIN).pot;; \
 201                    *) \
 202                      $(MSGMERGE_UPDATE) $(MSGMERGE_OPTIONS) --lang=$${lang} $${lang}.po $(DOMAIN).pot;; \
 203                  esac; \
 204                }; \
 205         else \
 206           $(MAKE) $${lang}.po-create; \
 207         fi
 208
 209
 210 install: install-exec install-data
 211 install-exec:
 212 install-data: install-data-@USE_NLS@
 213         if test "$(PACKAGE)" = "gettext-tools"; then \
 214           $(mkdir_p) $(DESTDIR)$(gettextsrcdir); \
 215           for file in $(DISTFILES.common) Makevars.template; do \
 216             $(INSTALL_DATA) $(srcdir)/$$file \
 217                             $(DESTDIR)$(gettextsrcdir)/$$file; \
 218           done; \
 219           for file in Makevars; do \
 220             rm -f $(DESTDIR)$(gettextsrcdir)/$$file; \
 221           done; \
 222         else \
 223           : ; \
 224         fi
 225 install-data-no: all
 226 install-data-yes: all
 227         @catalogs='$(CATALOGS)'; \
 228         for cat in $$catalogs; do \
 229           cat=`basename $$cat`; \
 230           lang=`echo $$cat | sed -e 's/\.gmo$$//'`; \
 231           dir=$(localedir)/$$lang/LC_MESSAGES; \
 232           $(mkdir_p) $(DESTDIR)$$dir; \
 233           if test -r $$cat; then realcat=$$cat; else realcat=$(srcdir)/$$cat; fi; \
 234           $(INSTALL_DATA) $$realcat $(DESTDIR)$$dir/$(DOMAIN).mo; \
 235           echo "installing $$realcat as $(DESTDIR)$$dir/$(DOMAIN).mo"; \
 236           for lc in '' $(EXTRA_LOCALE_CATEGORIES); do \
 237             if test -n "$$lc"; then \
 238               if (cd $(DESTDIR)$(localedir)/$$lang && LC_ALL=C ls -l -d $$lc 2>/dev/null) | grep ' -> ' >/dev/null; then \
 239                 link=`cd $(DESTDIR)$(localedir)/$$lang && LC_ALL=C ls -l -d $$lc | sed -e 's/^.* -> //'`; \
 240                 mv $(DESTDIR)$(localedir)/$$lang/$$lc $(DESTDIR)$(localedir)/$$lang/$$lc.old; \
 241                 mkdir $(DESTDIR)$(localedir)/$$lang/$$lc; \
 242                 (cd $(DESTDIR)$(localedir)/$$lang/$$lc.old && \
 243                  for file in *; do \
 244                    if test -f $$file; then \
 245                      ln -s ../$$link/$$file $(DESTDIR)$(localedir)/$$lang/$$lc/$$file; \
 246                    fi; \
 247                  done); \
 248                 rm -f $(DESTDIR)$(localedir)/$$lang/$$lc.old; \
 249               else \
 250                 if test -d $(DESTDIR)$(localedir)/$$lang/$$lc; then \
 251                   :; \
 252                 else \
 253                   rm -f $(DESTDIR)$(localedir)/$$lang/$$lc; \
 254                   mkdir $(DESTDIR)$(localedir)/$$lang/$$lc; \
 255                 fi; \
 256               fi; \
 257               rm -f $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo; \
 258               ln -s ../LC_MESSAGES/$(DOMAIN).mo $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo 2>/dev/null || \
 259               ln $(DESTDIR)$(localedir)/$$lang/LC_MESSAGES/$(DOMAIN).mo $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo 2>/dev/null || \
 260               cp -p $(DESTDIR)$(localedir)/$$lang/LC_MESSAGES/$(DOMAIN).mo $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo; \
 261               echo "installing $$realcat link as $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo"; \
 262             fi; \
 263           done; \
 264         done
 265
 266 install-strip: install
 267
 268 installdirs: installdirs-exec installdirs-data
 269 installdirs-exec:
 270 installdirs-data: installdirs-data-@USE_NLS@
 271         if test "$(PACKAGE)" = "gettext-tools"; then \
 272           $(mkdir_p) $(DESTDIR)$(gettextsrcdir); \
 273         else \
 274           : ; \
 275         fi
 276 installdirs-data-no:
 277 installdirs-data-yes:
 278         @catalogs='$(CATALOGS)'; \
 279         for cat in $$catalogs; do \
 280           cat=`basename $$cat`; \
 281           lang=`echo $$cat | sed -e 's/\.gmo$$//'`; \
 282           dir=$(localedir)/$$lang/LC_MESSAGES; \
 283           $(mkdir_p) $(DESTDIR)$$dir; \
 284           for lc in '' $(EXTRA_LOCALE_CATEGORIES); do \
 285             if test -n "$$lc"; then \
 286               if (cd $(DESTDIR)$(localedir)/$$lang && LC_ALL=C ls -l -d $$lc 2>/dev/null) | grep ' -> ' >/dev/null; then \
 287                 link=`cd $(DESTDIR)$(localedir)/$$lang && LC_ALL=C ls -l -d $$lc | sed -e 's/^.* -> //'`; \
 288                 mv $(DESTDIR)$(localedir)/$$lang/$$lc $(DESTDIR)$(localedir)/$$lang/$$lc.old; \
 289                 mkdir $(DESTDIR)$(localedir)/$$lang/$$lc; \
 290                 (cd $(DESTDIR)$(localedir)/$$lang/$$lc.old && \
 291                  for file in *; do \
 292                    if test -f $$file; then \
 293                      ln -s ../$$link/$$file $(DESTDIR)$(localedir)/$$lang/$$lc/$$file; \
 294                    fi; \
 295                  done); \
 296                 rm -f $(DESTDIR)$(localedir)/$$lang/$$lc.old; \
 297               else \
 298                 if test -d $(DESTDIR)$(localedir)/$$lang/$$lc; then \
 299                   :; \
 300                 else \
 301                   rm -f $(DESTDIR)$(localedir)/$$lang/$$lc; \
 302                   mkdir $(DESTDIR)$(localedir)/$$lang/$$lc; \
 303                 fi; \
 304               fi; \
 305             fi; \
 306           done; \
 307         done
 308
 309 # Define this as empty until I found a useful application.
 310 installcheck:
 311
 312 uninstall: uninstall-exec uninstall-data
 313 uninstall-exec:
 314 uninstall-data: uninstall-data-@USE_NLS@
 315         if test "$(PACKAGE)" = "gettext-tools"; then \
 316           for file in $(DISTFILES.common) Makevars.template; do \
 317             rm -f $(DESTDIR)$(gettextsrcdir)/$$file; \
 318           done; \
 319         else \
 320           : ; \
 321         fi
 322 uninstall-data-no:
 323 uninstall-data-yes:
 324         catalogs='$(CATALOGS)'; \
 325         for cat in $$catalogs; do \
 326           cat=`basename $$cat`; \
 327           lang=`echo $$cat | sed -e 's/\.gmo$$//'`; \
 328           for lc in LC_MESSAGES $(EXTRA_LOCALE_CATEGORIES); do \
 329             rm -f $(DESTDIR)$(localedir)/$$lang/$$lc/$(DOMAIN).mo; \
 330           done; \
 331         done
 332
 333 check: all
 334
 335 info dvi ps pdf html tags TAGS ctags CTAGS ID:
 336
 337 mostlyclean:
 338         rm -f remove-potcdate.sed
 339         rm -f stamp-poT
 340         rm -f core core.* $(DOMAIN).po $(DOMAIN).1po $(DOMAIN).2po *.new.po
 341         rm -fr *.o
 342
 343 clean: mostlyclean
 344
 345 distclean: clean
 346         rm -f Makefile Makefile.in POTFILES *.mo
 347
 348 maintainer-clean: distclean
 349         @echo "This command is intended for maintainers to use;"
 350         @echo "it deletes files that may require special tools to rebuild."
 351         rm -f stamp-po $(GMOFILES)
 352
 353 distdir = $(top_builddir)/$(PACKAGE)-$(VERSION)/$(subdir)
 354 dist distdir:
 355         $(MAKE) update-po
 356         @$(MAKE) dist2
 357 # This is a separate target because 'update-po' must be executed before.
 358 dist2: stamp-po $(DISTFILES)
 359         dists="$(DISTFILES)"; \
 360         if test "$(PACKAGE)" = "gettext-tools"; then \
 361           dists="$$dists Makevars.template"; \
 362         fi; \
 363         if test -f $(srcdir)/$(DOMAIN).pot; then \
 364           dists="$$dists $(DOMAIN).pot stamp-po"; \
 365         fi; \
 366         if test -f $(srcdir)/ChangeLog; then \
 367           dists="$$dists ChangeLog"; \
 368         fi; \
 369         for i in 0 1 2 3 4 5 6 7 8 9; do \
 370           if test -f $(srcdir)/ChangeLog.$$i; then \
 371             dists="$$dists ChangeLog.$$i"; \
 372           fi; \
 373         done; \
 374         if test -f $(srcdir)/LINGUAS; then dists="$$dists LINGUAS"; fi; \
 375         for file in $$dists; do \
 376           if test -f $$file; then \
 377             cp -p $$file $(distdir) || exit 1; \
 378           else \
 379             cp -p $(srcdir)/$$file $(distdir) || exit 1; \
 380           fi; \
 381         done
 382
 383 update-po: Makefile
 384         $(MAKE) $(DOMAIN).pot-update
 385         test -z "$(UPDATEPOFILES)" || $(MAKE) $(UPDATEPOFILES)
 386         $(MAKE) update-gmo
 387
 388 # General rule for creating PO files.
 389
 390 .nop.po-create:
 391         @lang=`echo $@ | sed -e 's/\.po-create$$//'`; \
 392         echo "File $$lang.po does not exist. If you are a translator, you can create it through 'msginit'." 1>&2; \
 393         exit 1
 394
 395 # General rule for updating PO files.
 396
 397 .nop.po-update:
 398         @lang=`echo $@ | sed -e 's/\.po-update$$//'`; \
 399         if test "$(PACKAGE)" = "gettext-tools"; then PATH=`pwd`/../src:$$PATH; fi; \
 400         tmpdir=`pwd`; \
 401         echo "$$lang:"; \
 402         test "$(srcdir)" = . && cdcmd="" || cdcmd="cd $(srcdir) && "; \
 403         echo "$${cdcmd}$(MSGMERGE) $(MSGMERGE_OPTIONS) --lang=$$lang $$lang.po $(DOMAIN).pot -o $$lang.new.po"; \
 404         cd $(srcdir); \
 405         if { case `$(MSGMERGE) --version | sed 1q | sed -e 's,^[^0-9]*,,'` in \
 406                '' | 0.[0-9] | 0.[0-9].* | 0.1[0-7] | 0.1[0-7].*) \
 407                  $(MSGMERGE) $(MSGMERGE_OPTIONS) -o $$tmpdir/$$lang.new.po $$lang.po $(DOMAIN).pot;; \
 408                *) \
 409                  $(MSGMERGE) $(MSGMERGE_OPTIONS) --lang=$$lang -o $$tmpdir/$$lang.new.po $$lang.po $(DOMAIN).pot;; \
 410              esac; \
 411            }; then \
 412           if cmp $$lang.po $$tmpdir/$$lang.new.po >/dev/null 2>&1; then \
 413             rm -f $$tmpdir/$$lang.new.po; \
 414           else \
 415             if mv -f $$tmpdir/$$lang.new.po $$lang.po; then \
 416               :; \
 417             else \
 418               echo "msgmerge for $$lang.po failed: cannot move $$tmpdir/$$lang.new.po to $$lang.po" 1>&2; \
 419               exit 1; \
 420             fi; \
 421           fi; \
 422         else \
 423           echo "msgmerge for $$lang.po failed!" 1>&2; \
 424           rm -f $$tmpdir/$$lang.new.po; \
 425         fi
 426
 427 $(DUMMYPOFILES):
 428
 429 update-gmo: Makefile $(GMOFILES)
 430         @:
 431
 432 # Recreate Makefile by invoking config.status. Explicitly invoke the shell,
 433 # because execution permission bits may not work on the current file system.
 434 # Use @SHELL@, which is the shell determined by autoconf for the use by its
 435 # scripts, not $(SHELL) which is hardwired to /bin/sh and may be deficient.
 436 Makefile: Makefile.in.in Makevars $(top_builddir)/config.status @POMAKEFILEDEPS@
 437         cd $(top_builddir) \
 438           && @SHELL@ ./config.status $(subdir)/$@.in po-directories
 439
 440 force:
 441
 442 # Tell versions [3.59,3.63) of GNU make not to export all variables.
 443 # Otherwise a system limit (for SysV at least) may be exceeded.
 444 .NOEXPORT: