source: GTP/trunk/Lib/Vis/Preprocessing/src/sparsehash/aclocal.m4 @ 2162

Revision 2162, 41.0 KB checked in by mattausch, 18 years ago (diff)

improved hash performance with google hashmap
Line 
1# aclocal.m4 generated automatically by aclocal 1.6.3 -*- Autoconf -*-
2
3# Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
4# Free Software Foundation, Inc.
5# This file is free software; the Free Software Foundation
6# gives unlimited permission to copy and/or distribute it,
7# with or without modifications, as long as this notice is preserved.
8
9# This program is distributed in the hope that it will be useful,
10# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
11# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
12# PARTICULAR PURPOSE.
13
14# Do all the work for Automake.                            -*- Autoconf -*-
15
16# This macro actually does too much some checks are only needed if
17# your package does certain things.  But this isn't really a big deal.
18
19# Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
20# Free Software Foundation, Inc.
21
22# This program is free software; you can redistribute it and/or modify
23# it under the terms of the GNU General Public License as published by
24# the Free Software Foundation; either version 2, or (at your option)
25# any later version.
26
27# This program is distributed in the hope that it will be useful,
28# but WITHOUT ANY WARRANTY; without even the implied warranty of
29# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
30# GNU General Public License for more details.
31
32# You should have received a copy of the GNU General Public License
33# along with this program; if not, write to the Free Software
34# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
35# 02111-1307, USA.
36
37# serial 8
38
39# There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
40# written in clear, in which case automake, when reading aclocal.m4,
41# will think it sees a *use*, and therefore will trigger all it's
42# C support machinery.  Also note that it means that autoscan, seeing
43# CC etc. in the Makefile, will ask for an AC_PROG_CC use...
44
45
46AC_PREREQ([2.52])
47
48# Autoconf 2.50 wants to disallow AM_ names.  We explicitly allow
49# the ones we care about.
50m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
51
52# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
53# AM_INIT_AUTOMAKE([OPTIONS])
54# -----------------------------------------------
55# The call with PACKAGE and VERSION arguments is the old style
56# call (pre autoconf-2.50), which is being phased out.  PACKAGE
57# and VERSION should now be passed to AC_INIT and removed from
58# the call to AM_INIT_AUTOMAKE.
59# We support both call styles for the transition.  After
60# the next Automake release, Autoconf can make the AC_INIT
61# arguments mandatory, and then we can depend on a new Autoconf
62# release and drop the old call support.
63AC_DEFUN([AM_INIT_AUTOMAKE],
64[AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
65 AC_REQUIRE([AC_PROG_INSTALL])dnl
66# test to see if srcdir already configured
67if test "`cd $srcdir && pwd`" != "`pwd`" &&
68   test -f $srcdir/config.status; then
69  AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
70fi
71
72# Define the identity of the package.
73dnl Distinguish between old-style and new-style calls.
74m4_ifval([$2],
75[m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
76 AC_SUBST([PACKAGE], [$1])dnl
77 AC_SUBST([VERSION], [$2])],
78[_AM_SET_OPTIONS([$1])dnl
79 AC_SUBST([PACKAGE], [AC_PACKAGE_TARNAME])dnl
80 AC_SUBST([VERSION], [AC_PACKAGE_VERSION])])dnl
81
82_AM_IF_OPTION([no-define],,
83[AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
84 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package])])dnl
85
86# Some tools Automake needs.
87AC_REQUIRE([AM_SANITY_CHECK])dnl
88AC_REQUIRE([AC_ARG_PROGRAM])dnl
89AM_MISSING_PROG(ACLOCAL, aclocal-${am__api_version})
90AM_MISSING_PROG(AUTOCONF, autoconf)
91AM_MISSING_PROG(AUTOMAKE, automake-${am__api_version})
92AM_MISSING_PROG(AUTOHEADER, autoheader)
93AM_MISSING_PROG(MAKEINFO, makeinfo)
94AM_MISSING_PROG(AMTAR, tar)
95AM_PROG_INSTALL_SH
96AM_PROG_INSTALL_STRIP
97# We need awk for the "check" target.  The system "awk" is bad on
98# some platforms.
99AC_REQUIRE([AC_PROG_AWK])dnl
100AC_REQUIRE([AC_PROG_MAKE_SET])dnl
101
102_AM_IF_OPTION([no-dependencies],,
103[AC_PROVIDE_IFELSE([AC_PROG_][CC],
104                  [_AM_DEPENDENCIES(CC)],
105                  [define([AC_PROG_][CC],
106                          defn([AC_PROG_][CC])[_AM_DEPENDENCIES(CC)])])dnl
107AC_PROVIDE_IFELSE([AC_PROG_][CXX],
108                  [_AM_DEPENDENCIES(CXX)],
109                  [define([AC_PROG_][CXX],
110                          defn([AC_PROG_][CXX])[_AM_DEPENDENCIES(CXX)])])dnl
111])
112])
113
114# Copyright 2002  Free Software Foundation, Inc.
115
116# This program is free software; you can redistribute it and/or modify
117# it under the terms of the GNU General Public License as published by
118# the Free Software Foundation; either version 2, or (at your option)
119# any later version.
120
121# This program is distributed in the hope that it will be useful,
122# but WITHOUT ANY WARRANTY; without even the implied warranty of
123# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
124# GNU General Public License for more details.
125
126# You should have received a copy of the GNU General Public License
127# along with this program; if not, write to the Free Software
128# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
129
130# AM_AUTOMAKE_VERSION(VERSION)
131# ----------------------------
132# Automake X.Y traces this macro to ensure aclocal.m4 has been
133# generated from the m4 files accompanying Automake X.Y.
134AC_DEFUN([AM_AUTOMAKE_VERSION],[am__api_version="1.6"])
135
136# AM_SET_CURRENT_AUTOMAKE_VERSION
137# -------------------------------
138# Call AM_AUTOMAKE_VERSION so it can be traced.
139# This function is AC_REQUIREd by AC_INIT_AUTOMAKE.
140AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
141         [AM_AUTOMAKE_VERSION([1.6.3])])
142
143# Helper functions for option handling.                    -*- Autoconf -*-
144
145# Copyright 2001, 2002  Free Software Foundation, Inc.
146
147# This program is free software; you can redistribute it and/or modify
148# it under the terms of the GNU General Public License as published by
149# the Free Software Foundation; either version 2, or (at your option)
150# any later version.
151
152# This program is distributed in the hope that it will be useful,
153# but WITHOUT ANY WARRANTY; without even the implied warranty of
154# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
155# GNU General Public License for more details.
156
157# You should have received a copy of the GNU General Public License
158# along with this program; if not, write to the Free Software
159# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
160# 02111-1307, USA.
161
162# serial 2
163
164# _AM_MANGLE_OPTION(NAME)
165# -----------------------
166AC_DEFUN([_AM_MANGLE_OPTION],
167[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
168
169# _AM_SET_OPTION(NAME)
170# ------------------------------
171# Set option NAME.  Presently that only means defining a flag for this option.
172AC_DEFUN([_AM_SET_OPTION],
173[m4_define(_AM_MANGLE_OPTION([$1]), 1)])
174
175# _AM_SET_OPTIONS(OPTIONS)
176# ----------------------------------
177# OPTIONS is a space-separated list of Automake options.
178AC_DEFUN([_AM_SET_OPTIONS],
179[AC_FOREACH([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
180
181# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
182# -------------------------------------------
183# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
184AC_DEFUN([_AM_IF_OPTION],
185[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
186
187#
188# Check to make sure that the build environment is sane.
189#
190
191# Copyright 1996, 1997, 2000, 2001 Free Software Foundation, Inc.
192
193# This program is free software; you can redistribute it and/or modify
194# it under the terms of the GNU General Public License as published by
195# the Free Software Foundation; either version 2, or (at your option)
196# any later version.
197
198# This program is distributed in the hope that it will be useful,
199# but WITHOUT ANY WARRANTY; without even the implied warranty of
200# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
201# GNU General Public License for more details.
202
203# You should have received a copy of the GNU General Public License
204# along with this program; if not, write to the Free Software
205# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
206# 02111-1307, USA.
207
208# serial 3
209
210# AM_SANITY_CHECK
211# ---------------
212AC_DEFUN([AM_SANITY_CHECK],
213[AC_MSG_CHECKING([whether build environment is sane])
214# Just in case
215sleep 1
216echo timestamp > conftest.file
217# Do `set' in a subshell so we don't clobber the current shell's
218# arguments.  Must try -L first in case configure is actually a
219# symlink; some systems play weird games with the mod time of symlinks
220# (eg FreeBSD returns the mod time of the symlink's containing
221# directory).
222if (
223   set X `ls -Lt $srcdir/configure conftest.file 2> /dev/null`
224   if test "$[*]" = "X"; then
225      # -L didn't work.
226      set X `ls -t $srcdir/configure conftest.file`
227   fi
228   rm -f conftest.file
229   if test "$[*]" != "X $srcdir/configure conftest.file" \
230      && test "$[*]" != "X conftest.file $srcdir/configure"; then
231
232      # If neither matched, then we have a broken ls.  This can happen
233      # if, for instance, CONFIG_SHELL is bash and it inherits a
234      # broken ls alias from the environment.  This has actually
235      # happened.  Such a system could not be considered "sane".
236      AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
237alias in your environment])
238   fi
239
240   test "$[2]" = conftest.file
241   )
242then
243   # Ok.
244   :
245else
246   AC_MSG_ERROR([newly created file is older than distributed files!
247Check your system clock])
248fi
249AC_MSG_RESULT(yes)])
250
251#  -*- Autoconf -*-
252
253
254# Copyright 1997, 1999, 2000, 2001 Free Software Foundation, Inc.
255
256# This program is free software; you can redistribute it and/or modify
257# it under the terms of the GNU General Public License as published by
258# the Free Software Foundation; either version 2, or (at your option)
259# any later version.
260
261# This program is distributed in the hope that it will be useful,
262# but WITHOUT ANY WARRANTY; without even the implied warranty of
263# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
264# GNU General Public License for more details.
265
266# You should have received a copy of the GNU General Public License
267# along with this program; if not, write to the Free Software
268# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
269# 02111-1307, USA.
270
271# serial 3
272
273# AM_MISSING_PROG(NAME, PROGRAM)
274# ------------------------------
275AC_DEFUN([AM_MISSING_PROG],
276[AC_REQUIRE([AM_MISSING_HAS_RUN])
277$1=${$1-"${am_missing_run}$2"}
278AC_SUBST($1)])
279
280
281# AM_MISSING_HAS_RUN
282# ------------------
283# Define MISSING if not defined so far and test if it supports --run.
284# If it does, set am_missing_run to use it, otherwise, to nothing.
285AC_DEFUN([AM_MISSING_HAS_RUN],
286[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
287test x"${MISSING+set}" = xset || MISSING="\${SHELL} $am_aux_dir/missing"
288# Use eval to expand $SHELL
289if eval "$MISSING --run true"; then
290  am_missing_run="$MISSING --run "
291else
292  am_missing_run=
293  AC_MSG_WARN([`missing' script is too old or missing])
294fi
295])
296
297# AM_AUX_DIR_EXPAND
298
299# Copyright 2001 Free Software Foundation, Inc.
300
301# This program is free software; you can redistribute it and/or modify
302# it under the terms of the GNU General Public License as published by
303# the Free Software Foundation; either version 2, or (at your option)
304# any later version.
305
306# This program is distributed in the hope that it will be useful,
307# but WITHOUT ANY WARRANTY; without even the implied warranty of
308# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
309# GNU General Public License for more details.
310
311# You should have received a copy of the GNU General Public License
312# along with this program; if not, write to the Free Software
313# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
314# 02111-1307, USA.
315
316# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
317# $ac_aux_dir to `$srcdir/foo'.  In other projects, it is set to
318# `$srcdir', `$srcdir/..', or `$srcdir/../..'.
319#
320# Of course, Automake must honor this variable whenever it calls a
321# tool from the auxiliary directory.  The problem is that $srcdir (and
322# therefore $ac_aux_dir as well) can be either absolute or relative,
323# depending on how configure is run.  This is pretty annoying, since
324# it makes $ac_aux_dir quite unusable in subdirectories: in the top
325# source directory, any form will work fine, but in subdirectories a
326# relative path needs to be adjusted first.
327#
328# $ac_aux_dir/missing
329#    fails when called from a subdirectory if $ac_aux_dir is relative
330# $top_srcdir/$ac_aux_dir/missing
331#    fails if $ac_aux_dir is absolute,
332#    fails when called from a subdirectory in a VPATH build with
333#          a relative $ac_aux_dir
334#
335# The reason of the latter failure is that $top_srcdir and $ac_aux_dir
336# are both prefixed by $srcdir.  In an in-source build this is usually
337# harmless because $srcdir is `.', but things will broke when you
338# start a VPATH build or use an absolute $srcdir.
339#
340# So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
341# iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
342#   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
343# and then we would define $MISSING as
344#   MISSING="\${SHELL} $am_aux_dir/missing"
345# This will work as long as MISSING is not called from configure, because
346# unfortunately $(top_srcdir) has no meaning in configure.
347# However there are other variables, like CC, which are often used in
348# configure, and could therefore not use this "fixed" $ac_aux_dir.
349#
350# Another solution, used here, is to always expand $ac_aux_dir to an
351# absolute PATH.  The drawback is that using absolute paths prevent a
352# configured tree to be moved without reconfiguration.
353
354# Rely on autoconf to set up CDPATH properly.
355AC_PREREQ([2.50])
356
357AC_DEFUN([AM_AUX_DIR_EXPAND], [
358# expand $ac_aux_dir to an absolute path
359am_aux_dir=`cd $ac_aux_dir && pwd`
360])
361
362# AM_PROG_INSTALL_SH
363# ------------------
364# Define $install_sh.
365
366# Copyright 2001 Free Software Foundation, Inc.
367
368# This program is free software; you can redistribute it and/or modify
369# it under the terms of the GNU General Public License as published by
370# the Free Software Foundation; either version 2, or (at your option)
371# any later version.
372
373# This program is distributed in the hope that it will be useful,
374# but WITHOUT ANY WARRANTY; without even the implied warranty of
375# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
376# GNU General Public License for more details.
377
378# You should have received a copy of the GNU General Public License
379# along with this program; if not, write to the Free Software
380# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
381# 02111-1307, USA.
382
383AC_DEFUN([AM_PROG_INSTALL_SH],
384[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
385install_sh=${install_sh-"$am_aux_dir/install-sh"}
386AC_SUBST(install_sh)])
387
388# AM_PROG_INSTALL_STRIP
389
390# Copyright 2001 Free Software Foundation, Inc.
391
392# This program is free software; you can redistribute it and/or modify
393# it under the terms of the GNU General Public License as published by
394# the Free Software Foundation; either version 2, or (at your option)
395# any later version.
396
397# This program is distributed in the hope that it will be useful,
398# but WITHOUT ANY WARRANTY; without even the implied warranty of
399# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
400# GNU General Public License for more details.
401
402# You should have received a copy of the GNU General Public License
403# along with this program; if not, write to the Free Software
404# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
405# 02111-1307, USA.
406
407# One issue with vendor `install' (even GNU) is that you can't
408# specify the program used to strip binaries.  This is especially
409# annoying in cross-compiling environments, where the build's strip
410# is unlikely to handle the host's binaries.
411# Fortunately install-sh will honor a STRIPPROG variable, so we
412# always use install-sh in `make install-strip', and initialize
413# STRIPPROG with the value of the STRIP variable (set by the user).
414AC_DEFUN([AM_PROG_INSTALL_STRIP],
415[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
416# Installed binaries are usually stripped using `strip' when the user
417# run `make install-strip'.  However `strip' might not be the right
418# tool to use in cross-compilation environments, therefore Automake
419# will honor the `STRIP' environment variable to overrule this program.
420dnl Don't test for $cross_compiling = yes, because it might be `maybe'.
421if test "$cross_compiling" != no; then
422  AC_CHECK_TOOL([STRIP], [strip], :)
423fi
424INSTALL_STRIP_PROGRAM="\${SHELL} \$(install_sh) -c -s"
425AC_SUBST([INSTALL_STRIP_PROGRAM])])
426
427# serial 4                                              -*- Autoconf -*-
428
429# Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
430
431# This program is free software; you can redistribute it and/or modify
432# it under the terms of the GNU General Public License as published by
433# the Free Software Foundation; either version 2, or (at your option)
434# any later version.
435
436# This program is distributed in the hope that it will be useful,
437# but WITHOUT ANY WARRANTY; without even the implied warranty of
438# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
439# GNU General Public License for more details.
440
441# You should have received a copy of the GNU General Public License
442# along with this program; if not, write to the Free Software
443# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
444# 02111-1307, USA.
445
446
447# There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
448# written in clear, in which case automake, when reading aclocal.m4,
449# will think it sees a *use*, and therefore will trigger all it's
450# C support machinery.  Also note that it means that autoscan, seeing
451# CC etc. in the Makefile, will ask for an AC_PROG_CC use...
452
453
454
455# _AM_DEPENDENCIES(NAME)
456# ----------------------
457# See how the compiler implements dependency checking.
458# NAME is "CC", "CXX", "GCJ", or "OBJC".
459# We try a few techniques and use that to set a single cache variable.
460#
461# We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
462# modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
463# dependency, and given that the user is not expected to run this macro,
464# just rely on AC_PROG_CC.
465AC_DEFUN([_AM_DEPENDENCIES],
466[AC_REQUIRE([AM_SET_DEPDIR])dnl
467AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
468AC_REQUIRE([AM_MAKE_INCLUDE])dnl
469AC_REQUIRE([AM_DEP_TRACK])dnl
470
471ifelse([$1], CC,   [depcc="$CC"   am_compiler_list=],
472       [$1], CXX,  [depcc="$CXX"  am_compiler_list=],
473       [$1], OBJC, [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
474       [$1], GCJ,  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
475                   [depcc="$$1"   am_compiler_list=])
476
477AC_CACHE_CHECK([dependency style of $depcc],
478               [am_cv_$1_dependencies_compiler_type],
479[if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
480  # We make a subdir and do the tests there.  Otherwise we can end up
481  # making bogus files that we don't know about and never remove.  For
482  # instance it was reported that on HP-UX the gcc test will end up
483  # making a dummy file named `D' -- because `-MD' means `put the output
484  # in D'.
485  mkdir conftest.dir
486  # Copy depcomp to subdir because otherwise we won't find it if we're
487  # using a relative directory.
488  cp "$am_depcomp" conftest.dir
489  cd conftest.dir
490
491  am_cv_$1_dependencies_compiler_type=none
492  if test "$am_compiler_list" = ""; then
493     am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
494  fi
495  for depmode in $am_compiler_list; do
496    # We need to recreate these files for each test, as the compiler may
497    # overwrite some of them when testing with obscure command lines.
498    # This happens at least with the AIX C compiler.
499    echo '#include "conftest.h"' > conftest.c
500    echo 'int i;' > conftest.h
501    echo "${am__include} ${am__quote}conftest.Po${am__quote}" > confmf
502
503    case $depmode in
504    nosideeffect)
505      # after this tag, mechanisms are not by side-effect, so they'll
506      # only be used when explicitly requested
507      if test "x$enable_dependency_tracking" = xyes; then
508        continue
509      else
510        break
511      fi
512      ;;
513    none) break ;;
514    esac
515    # We check with `-c' and `-o' for the sake of the "dashmstdout"
516    # mode.  It turns out that the SunPro C++ compiler does not properly
517    # handle `-M -o', and we need to detect this.
518    if depmode=$depmode \
519       source=conftest.c object=conftest.o \
520       depfile=conftest.Po tmpdepfile=conftest.TPo \
521       $SHELL ./depcomp $depcc -c conftest.c -o conftest.o >/dev/null 2>&1 &&
522       grep conftest.h conftest.Po > /dev/null 2>&1 &&
523       ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
524      am_cv_$1_dependencies_compiler_type=$depmode
525      break
526    fi
527  done
528
529  cd ..
530  rm -rf conftest.dir
531else
532  am_cv_$1_dependencies_compiler_type=none
533fi
534])
535AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
536])
537
538
539# AM_SET_DEPDIR
540# -------------
541# Choose a directory name for dependency files.
542# This macro is AC_REQUIREd in _AM_DEPENDENCIES
543AC_DEFUN([AM_SET_DEPDIR],
544[rm -f .deps 2>/dev/null
545mkdir .deps 2>/dev/null
546if test -d .deps; then
547  DEPDIR=.deps
548else
549  # MS-DOS does not allow filenames that begin with a dot.
550  DEPDIR=_deps
551fi
552rmdir .deps 2>/dev/null
553AC_SUBST([DEPDIR])
554])
555
556
557# AM_DEP_TRACK
558# ------------
559AC_DEFUN([AM_DEP_TRACK],
560[AC_ARG_ENABLE(dependency-tracking,
561[  --disable-dependency-tracking Speeds up one-time builds
562  --enable-dependency-tracking  Do not reject slow dependency extractors])
563if test "x$enable_dependency_tracking" != xno; then
564  am_depcomp="$ac_aux_dir/depcomp"
565  AMDEPBACKSLASH='\'
566fi
567AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
568AC_SUBST([AMDEPBACKSLASH])
569])
570
571# Generate code to set up dependency tracking.   -*- Autoconf -*-
572
573# Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
574
575# This program is free software; you can redistribute it and/or modify
576# it under the terms of the GNU General Public License as published by
577# the Free Software Foundation; either version 2, or (at your option)
578# any later version.
579
580# This program is distributed in the hope that it will be useful,
581# but WITHOUT ANY WARRANTY; without even the implied warranty of
582# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
583# GNU General Public License for more details.
584
585# You should have received a copy of the GNU General Public License
586# along with this program; if not, write to the Free Software
587# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
588# 02111-1307, USA.
589
590#serial 2
591
592# _AM_OUTPUT_DEPENDENCY_COMMANDS
593# ------------------------------
594AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
595[for mf in $CONFIG_FILES; do
596  # Strip MF so we end up with the name of the file.
597  mf=`echo "$mf" | sed -e 's/:.*$//'`
598  # Check whether this is an Automake generated Makefile or not.
599  # We used to match only the files named `Makefile.in', but
600  # some people rename them; so instead we look at the file content.
601  # Grep'ing the first line is not enough: some people post-process
602  # each Makefile.in and add a new line on top of each file to say so.
603  # So let's grep whole file.
604  if grep '^#.*generated by automake' $mf > /dev/null 2>&1; then
605    dirpart=`AS_DIRNAME("$mf")`
606  else
607    continue
608  fi
609  grep '^DEP_FILES *= *[[^ @%:@]]' < "$mf" > /dev/null || continue
610  # Extract the definition of DEP_FILES from the Makefile without
611  # running `make'.
612  DEPDIR=`sed -n -e '/^DEPDIR = / s///p' < "$mf"`
613  test -z "$DEPDIR" && continue
614  # When using ansi2knr, U may be empty or an underscore; expand it
615  U=`sed -n -e '/^U = / s///p' < "$mf"`
616  test -d "$dirpart/$DEPDIR" || mkdir "$dirpart/$DEPDIR"
617  # We invoke sed twice because it is the simplest approach to
618  # changing $(DEPDIR) to its actual value in the expansion.
619  for file in `sed -n -e '
620    /^DEP_FILES = .*\\\\$/ {
621      s/^DEP_FILES = //
622      :loop
623        s/\\\\$//
624        p
625        n
626        /\\\\$/ b loop
627      p
628    }
629    /^DEP_FILES = / s/^DEP_FILES = //p' < "$mf" | \
630       sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
631    # Make sure the directory exists.
632    test -f "$dirpart/$file" && continue
633    fdir=`AS_DIRNAME(["$file"])`
634    AS_MKDIR_P([$dirpart/$fdir])
635    # echo "creating $dirpart/$file"
636    echo '# dummy' > "$dirpart/$file"
637  done
638done
639])# _AM_OUTPUT_DEPENDENCY_COMMANDS
640
641
642# AM_OUTPUT_DEPENDENCY_COMMANDS
643# -----------------------------
644# This macro should only be invoked once -- use via AC_REQUIRE.
645#
646# This code is only required when automatic dependency tracking
647# is enabled.  FIXME.  This creates each `.P' file that we will
648# need in order to bootstrap the dependency handling code.
649AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
650[AC_CONFIG_COMMANDS([depfiles],
651     [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
652     [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
653])
654
655# Copyright 2001 Free Software Foundation, Inc.             -*- Autoconf -*-
656
657# This program is free software; you can redistribute it and/or modify
658# it under the terms of the GNU General Public License as published by
659# the Free Software Foundation; either version 2, or (at your option)
660# any later version.
661
662# This program is distributed in the hope that it will be useful,
663# but WITHOUT ANY WARRANTY; without even the implied warranty of
664# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
665# GNU General Public License for more details.
666
667# You should have received a copy of the GNU General Public License
668# along with this program; if not, write to the Free Software
669# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
670# 02111-1307, USA.
671
672# serial 2
673
674# AM_MAKE_INCLUDE()
675# -----------------
676# Check to see how make treats includes.
677AC_DEFUN([AM_MAKE_INCLUDE],
678[am_make=${MAKE-make}
679cat > confinc << 'END'
680doit:
681        @echo done
682END
683# If we don't find an include directive, just comment out the code.
684AC_MSG_CHECKING([for style of include used by $am_make])
685am__include="#"
686am__quote=
687_am_result=none
688# First try GNU make style include.
689echo "include confinc" > confmf
690# We grep out `Entering directory' and `Leaving directory'
691# messages which can occur if `w' ends up in MAKEFLAGS.
692# In particular we don't look at `^make:' because GNU make might
693# be invoked under some other name (usually "gmake"), in which
694# case it prints its new name instead of `make'.
695if test "`$am_make -s -f confmf 2> /dev/null | fgrep -v 'ing directory'`" = "done"; then
696   am__include=include
697   am__quote=
698   _am_result=GNU
699fi
700# Now try BSD make style include.
701if test "$am__include" = "#"; then
702   echo '.include "confinc"' > confmf
703   if test "`$am_make -s -f confmf 2> /dev/null`" = "done"; then
704      am__include=.include
705      am__quote="\""
706      _am_result=BSD
707   fi
708fi
709AC_SUBST(am__include)
710AC_SUBST(am__quote)
711AC_MSG_RESULT($_am_result)
712rm -f confinc confmf
713])
714
715# AM_CONDITIONAL                                              -*- Autoconf -*-
716
717# Copyright 1997, 2000, 2001 Free Software Foundation, Inc.
718
719# This program is free software; you can redistribute it and/or modify
720# it under the terms of the GNU General Public License as published by
721# the Free Software Foundation; either version 2, or (at your option)
722# any later version.
723
724# This program is distributed in the hope that it will be useful,
725# but WITHOUT ANY WARRANTY; without even the implied warranty of
726# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
727# GNU General Public License for more details.
728
729# You should have received a copy of the GNU General Public License
730# along with this program; if not, write to the Free Software
731# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
732# 02111-1307, USA.
733
734# serial 5
735
736AC_PREREQ(2.52)
737
738# AM_CONDITIONAL(NAME, SHELL-CONDITION)
739# -------------------------------------
740# Define a conditional.
741AC_DEFUN([AM_CONDITIONAL],
742[ifelse([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
743        [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
744AC_SUBST([$1_TRUE])
745AC_SUBST([$1_FALSE])
746if $2; then
747  $1_TRUE=
748  $1_FALSE='#'
749else
750  $1_TRUE='#'
751  $1_FALSE=
752fi
753AC_CONFIG_COMMANDS_PRE(
754[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
755  AC_MSG_ERROR([conditional \"$1\" was never defined.
756Usually this means the macro was only invoked conditionally.])
757fi])])
758
759# Like AC_CONFIG_HEADER, but automatically create stamp file. -*- Autoconf -*-
760
761# Copyright 1996, 1997, 2000, 2001 Free Software Foundation, Inc.
762
763# This program is free software; you can redistribute it and/or modify
764# it under the terms of the GNU General Public License as published by
765# the Free Software Foundation; either version 2, or (at your option)
766# any later version.
767
768# This program is distributed in the hope that it will be useful,
769# but WITHOUT ANY WARRANTY; without even the implied warranty of
770# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
771# GNU General Public License for more details.
772
773# You should have received a copy of the GNU General Public License
774# along with this program; if not, write to the Free Software
775# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
776# 02111-1307, USA.
777
778AC_PREREQ([2.52])
779
780# serial 6
781
782# When config.status generates a header, we must update the stamp-h file.
783# This file resides in the same directory as the config header
784# that is generated.  We must strip everything past the first ":",
785# and everything past the last "/".
786
787# _AM_DIRNAME(PATH)
788# -----------------
789# Like AS_DIRNAME, only do it during macro expansion
790AC_DEFUN([_AM_DIRNAME],
791       [m4_if(regexp([$1], [^.*[^/]//*[^/][^/]*/*$]), -1,
792              m4_if(regexp([$1], [^//\([^/]\|$\)]), -1,
793                    m4_if(regexp([$1], [^/.*]), -1,
794                          [.],
795                          patsubst([$1], [^\(/\).*], [\1])),
796                    patsubst([$1], [^\(//\)\([^/].*\|$\)], [\1])),
797              patsubst([$1], [^\(.*[^/]\)//*[^/][^/]*/*$], [\1]))[]dnl
798])# _AM_DIRNAME
799
800
801# The stamp files are numbered to have different names.
802# We could number them on a directory basis, but that's additional
803# complications, let's have a unique counter.
804m4_define([_AM_STAMP_Count], [0])
805
806
807# _AM_STAMP(HEADER)
808# -----------------
809# The name of the stamp file for HEADER.
810AC_DEFUN([_AM_STAMP],
811[m4_define([_AM_STAMP_Count], m4_incr(_AM_STAMP_Count))dnl
812AS_ESCAPE(_AM_DIRNAME(patsubst([$1],
813                               [:.*])))/stamp-h[]_AM_STAMP_Count])
814
815
816# _AM_CONFIG_HEADER(HEADER[:SOURCES], COMMANDS, INIT-COMMANDS)
817# ------------------------------------------------------------
818# We used to try to get a real timestamp in stamp-h.  But the fear is that
819# that will cause unnecessary cvs conflicts.
820AC_DEFUN([_AM_CONFIG_HEADER],
821[# Add the stamp file to the list of files AC keeps track of,
822# along with our hook.
823AC_CONFIG_HEADERS([$1],
824                  [# update the timestamp
825echo 'timestamp for $1' >"_AM_STAMP([$1])"
826$2],
827                  [$3])
828])# _AM_CONFIG_HEADER
829
830
831# AM_CONFIG_HEADER(HEADER[:SOURCES]..., COMMANDS, INIT-COMMANDS)
832# --------------------------------------------------------------
833AC_DEFUN([AM_CONFIG_HEADER],
834[AC_FOREACH([_AM_File], [$1], [_AM_CONFIG_HEADER(_AM_File, [$2], [$3])])
835])# AM_CONFIG_HEADER
836
837# Figures out where hash_map is defined, and then writes out the
838# location to a header file specified in $1.  The output file also
839# #defines the namespace that hash_map is in HASH_NAMESPACE.
840#
841# You can use this *instead of* stl_hash.ac.  stl_hash.ac will
842# also define HASH_NAMESPACE, and vars indicating where hash_map
843# lives, but won't actually make an include file for you.  This
844# routine is a higher-level wrapper around hash_map.
845
846AC_DEFUN([AC_CXX_MAKE_HASH_MAP_H],
847  [AC_REQUIRE([AC_CXX_STL_HASH])
848   AC_MSG_CHECKING(writing a helper file for including hash_map)
849
850   AS_MKDIR_P([`AS_DIRNAME([$1])`])
851   cat >$1 <<EOF
852#include $ac_cv_cxx_hash_map
853#ifndef HASH_NAMESPACE
854#define HASH_NAMESPACE $ac_cv_cxx_hash_namespace
855#endif
856EOF
857
858   AC_MSG_RESULT([$1])
859])
860
861# We check two things: where the include file is for hash_map, and
862# what namespace hash_map lives in within that include file.  We
863# include AC_TRY_COMPILE for all the combinations we've seen in the
864# wild.  We define one of HAVE_HASH_MAP or HAVE_EXT_HASH_MAP depending
865# on location, and HASH_NAMESPACE to be the namespace hash_map is
866# defined in.  If we can't find a hash_map that works, we die!
867
868AC_DEFUN([AC_CXX_STL_HASH],
869  [AC_CACHE_CHECK(
870      location of STL hash_map,
871      ac_cv_cxx_stl_hash,
872      [AC_REQUIRE([AC_CXX_NAMESPACES])
873      AC_LANG_SAVE
874      AC_LANG_CPLUSPLUS
875      AC_TRY_COMPILE([#include <hash_map>],
876                     [hash_map<int, int> t; return 0;],
877                     ac_cv_cxx_stl_hash=hash_map)
878      AC_TRY_COMPILE([#include <ext/hash_map>],
879                     [__gnu_cxx::hash_map<int, int> t; return 0;],
880                     ac_cv_cxx_stl_hash=ext_hash_map)
881      AC_TRY_COMPILE([#include <hash_map>],
882                     [std::hash_map<int, int> t; return 0;],
883                     ac_cv_cxx_stl_hash=std_hash_map)
884      AC_TRY_COMPILE([#include <hash_map>],
885                     [stdext::hash_map<int, int> t; return 0;],
886                     ac_cv_cxx_stl_hash=stdext_hash_map)
887
888      AC_LANG_RESTORE])
889   if test "$ac_cv_cxx_stl_hash" = hash_map; then
890      AC_DEFINE(HAVE_HASH_MAP, 1, [define if the compiler has hash_map])
891      AC_DEFINE(HAVE_HASH_SET, 1, [define if the compiler has hash_set])
892      ac_cv_cxx_hash_map="<hash_map>"
893      ac_cv_cxx_hash_set="<hash_set>"
894      ac_cv_cxx_hash_namespace=""
895   fi
896   if test "$ac_cv_cxx_stl_hash" = ext_hash_map; then
897      AC_DEFINE(HAVE_EXT_HASH_MAP, 1, [define if the compiler has hash_map])
898      AC_DEFINE(HAVE_EXT_HASH_SET, 1, [define if the compiler has hash_set])
899      ac_cv_cxx_hash_map="<ext/hash_map>"
900      ac_cv_cxx_hash_set="<ext/hash_set>"
901      ac_cv_cxx_hash_namespace="__gnu_cxx"
902   fi
903   if test "$ac_cv_cxx_stl_hash" = std_hash_map; then
904      AC_DEFINE(HAVE_HASH_MAP, 1, [define if the compiler has hash_map])
905      AC_DEFINE(HAVE_HASH_SET, 1, [define if the compiler has hash_set])
906      ac_cv_cxx_hash_map="<hash_map>"
907      ac_cv_cxx_hash_set="<hash_set>"
908      ac_cv_cxx_hash_namespace="std"
909   fi
910   if test "$ac_cv_cxx_stl_hash" = stdext_hash_map; then
911      AC_DEFINE(HAVE_HASH_MAP, 1, [define if the compiler has hash_map])
912      AC_DEFINE(HAVE_HASH_SET, 1, [define if the compiler has hash_set])
913      ac_cv_cxx_hash_map="<hash_map>"
914      ac_cv_cxx_hash_set="<hash_set>"
915      ac_cv_cxx_hash_namespace="stdext"
916   fi
917   AC_DEFINE_UNQUOTED(HASH_NAMESPACE,$ac_cv_cxx_hash_namespace,
918                      [the namespace of hash_map])
919
920   if test x"$ac_cv_cxx_stl_hash" = x; then
921      AC_MSG_ERROR(couldn't find an STL hash_map)
922   fi
923])
924
925dnl @synopsis AC_CXX_NAMESPACES
926dnl
927dnl If the compiler can prevent names clashes using namespaces, define
928dnl HAVE_NAMESPACES.
929dnl
930dnl @category Cxx
931dnl @author Todd Veldhuizen
932dnl @author Luc Maisonobe <luc@spaceroots.org>
933dnl @version 2004-02-04
934dnl @license AllPermissive
935
936AC_DEFUN([AC_CXX_NAMESPACES],
937[AC_CACHE_CHECK(whether the compiler implements namespaces,
938ac_cv_cxx_namespaces,
939[AC_LANG_SAVE
940 AC_LANG_CPLUSPLUS
941 AC_TRY_COMPILE([namespace Outer { namespace Inner { int i = 0; }}],
942                [using namespace Outer::Inner; return i;],
943 ac_cv_cxx_namespaces=yes, ac_cv_cxx_namespaces=no)
944 AC_LANG_RESTORE
945])
946if test "$ac_cv_cxx_namespaces" = yes; then
947  AC_DEFINE(HAVE_NAMESPACES,,[define if the compiler implements namespaces])
948fi
949])
950
951# Figures out where hash_fun (or stl_hash_fun) is defined, and then
952# writes out the location to the file specified in $1.
953# The output file also #defines the namespace that hash_fun is in
954# HASH_NAMESPACE.
955#
956# You can use this *instead of* stl_hash_fun.ac.  stl_hash_fun.ac will
957# also define vars indicating where hash_fun lives, but won't actually
958# make an include file for you.  This routine is a higher-level
959# wrapper around hash_fun.ac.
960#
961# If we can't find hash_fun.h, we copy in our own private copy of
962# sgi's stl_hash_fun.h into the file instead.
963
964AC_DEFUN([AC_CXX_MAKE_HASH_FUN_H],
965  [AC_REQUIRE([AC_CXX_STL_HASH_FUN])
966   AC_REQUIRE([AC_CXX_STL_HASH])
967   AC_MSG_CHECKING(writing an include-helper for hash_fun.h)
968
969   AS_MKDIR_P([`AS_DIRNAME([$1])`])
970   cat >$1 <<EOF
971#ifndef HASH_NAMESPACE
972#define HASH_NAMESPACE $ac_cv_cxx_hash_namespace
973#endif
974
975EOF
976   if test -n "$ac_cv_cxx_stl_hash_fun"; then
977     echo "#include $ac_cv_cxx_stl_hash_fun" >> $1
978   else
979     cat $srcdir/src/windows/stl_hash_fun.h >> $1
980   fi
981
982   AC_MSG_RESULT([$1])
983])
984
985# We just try to figure out where hash<> is defined.  It's in some file
986# that ends in hash_fun.h...
987#
988# We use our knowledge of configure to know that the $ac_header holds
989# the header that's found when the conditional text executes.  We make
990# use of that fact, which perhaps we shouldn't...
991
992# Ideally we'd use AC_CACHE_CHECK, but we want to call AC_CHECK_HEADERS which
993# prints messages itself, so instead we implement AC_CACHE_CHECK manually
994# via AC_MSG_CHECKING + AC_CACHE_VAL + AC_MSG_RESULT
995
996AC_DEFUN([AC_CXX_STL_HASH_FUN],
997  [AC_REQUIRE([AC_CXX_NAMESPACES])
998   AC_LANG_SAVE
999   AC_LANG_CPLUSPLUS
1000   AC_CHECK_HEADERS(stl_hash_fun.h ext/stl_hash_fun.h \
1001                    ext/hash_fun.h hash_fun.h,
1002                    [ac_cv_cxx_stl_hash_fun="<$ac_header>"; break])
1003   AC_LANG_RESTORE
1004   AC_MSG_CHECKING(how to include hash_fun directly)
1005   AC_MSG_RESULT([$ac_cv_cxx_stl_hash_fun])
1006])
1007
1008# We check what namespace stl code like vector expects to be executed in
1009
1010AC_DEFUN([AC_CXX_STL_NAMESPACE],
1011  [AC_CACHE_CHECK(
1012      what namespace STL code is in,
1013      ac_cv_cxx_stl_namespace,
1014      [AC_REQUIRE([AC_CXX_NAMESPACES])
1015      AC_LANG_SAVE
1016      AC_LANG_CPLUSPLUS
1017      AC_TRY_COMPILE([#include <vector>],
1018                     [vector<int> t; return 0;],
1019                     ac_cv_cxx_stl_namespace=none)
1020      AC_TRY_COMPILE([#include <vector>],
1021                     [std::vector<int> t; return 0;],
1022                     ac_cv_cxx_stl_namespace=std)
1023      AC_LANG_RESTORE])
1024   if test "$ac_cv_cxx_stl_namespace" = none; then
1025      AC_DEFINE(STL_NAMESPACE,,
1026                [the namespace where STL code like vector<> is defined])
1027   fi
1028   if test "$ac_cv_cxx_stl_namespace" = std; then
1029      AC_DEFINE(STL_NAMESPACE,std,
1030                [the namespace where STL code like vector<> is defined])
1031   fi
1032])
1033
1034# Allow users to override the namespace we define our application's classes in
1035# Arg $1 is the default namespace to use if --enable-namespace isn't present.
1036
1037# In general, $1 should be 'google', so we put all our exported symbols in a
1038# unique namespace that is not likely to conflict with anyone else.  However,
1039# when it makes sense -- for instance, when publishing stl-like code -- you
1040# may want to go with a different default, like 'std'.
1041
1042AC_DEFUN([AC_DEFINE_GOOGLE_NAMESPACE],
1043  [google_namespace_default=[$1]
1044   AC_ARG_ENABLE(namespace, [--enable-namespace=FOO to define these Google
1045                             classes in the FOO namespace. --disable-namespace
1046                             to define them in the global namespace. Default
1047                             is to define them in std.],
1048                 [case "$enableval" in
1049                    yes) google_namespace="$google_namespace_default" ;;
1050                     no) google_namespace="" ;;
1051                      *) google_namespace="$enableval" ;;
1052                  esac],
1053                 [google_namespace="$google_namespace_default"])
1054   if test -n "$google_namespace"; then
1055     AC_DEFINE_UNQUOTED(GOOGLE_NAMESPACE, $google_namespace,
1056                        Namespace for Google classes)
1057     AC_DEFINE(_START_GOOGLE_NAMESPACE_, [ namespace GOOGLE_NAMESPACE { ],
1058               Puts following code inside the Google namespace)
1059     AC_DEFINE(_END_GOOGLE_NAMESPACE_, [ } ],
1060               Stops putting the code inside the Google namespace)
1061   else
1062     AC_DEFINE(GOOGLE_NAMESPACE,,
1063               Namespace for Google classes)
1064     AC_DEFINE(_START_GOOGLE_NAMESPACE_,,
1065               Puts following code inside the Google namespace)
1066     AC_DEFINE(_END_GOOGLE_NAMESPACE_,,
1067               Stops putting the code inside the Google namespace)
1068   fi
1069])
1070
1071# Checks whether the STL implementation used by this C++ compiler understands
1072# iterator tags, which are typedefs that say what the iterator can do
1073# (just ++, or random access, or what).
1074#
1075# Unfortunately, I don't know how to use $ac_cv_cxx_stl_namespace from
1076# stl_namespace.m4, so I just re-implement it.  Ugh.
1077 
1078AC_DEFUN([AC_CXX_STL_ITERATOR_TAGS],
1079  [AC_CACHE_CHECK(
1080      whether STL supports iterator-tags,
1081      ac_cv_cxx_stl_iterator_tags,
1082      [AC_REQUIRE([AC_CXX_STL_NAMESPACE])
1083       AC_LANG_SAVE
1084       AC_LANG_CPLUSPLUS
1085       AC_TRY_COMPILE([#include <list>],
1086                      [list<int>::iterator::iterator_category c; return 0;],
1087                      ac_cv_cxx_stl_iterator_tags=yes)
1088       AC_TRY_COMPILE([#include <list>],
1089                      [std::list<int>::iterator::iterator_category c; return 0;],
1090                      ac_cv_cxx_stl_iterator_tags=yes)
1091       AC_LANG_RESTORE])
1092   if test "$ac_cv_cxx_stl_iterator_tags" = yes; then
1093     AC_DEFINE(UNDERSTANDS_ITERATOR_TAGS, 1,
1094               [does STL support iterator-tags?])
1095   fi
1096])
1097
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