Import dependencies

4 years ago · fc564f19b2
43 changed files with 46485 additions and 6 deletions
--- a/19
+++ b/19
@ -0,0 +1,19 @@
				@@ -0,0 +1,19 @@
+// Copyright (c) 2011 Google, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
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@ -0,0 +1,4 @@
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+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
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+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
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+	    || exit 1; \
+	  fi; \
+	done
+	@list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
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+	    $(am__relativize); \
+	    new_distdir=$$reldir; \
+	    dir1=$$subdir; dir2="$(top_distdir)"; \
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+	  && $(MAKE) $(AM_MAKEFLAGS) dist \
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+	  || exit 1
+	$(am__remove_distdir)
+	@(echo "$(distdir) archives ready for distribution: "; \
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+distuninstallcheck:
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+	  echo 'ERROR: trying to run $@ with an empty' \
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+	}; \
+	$(am__cd) '$(distuninstallcheck_dir)' || { \
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+	test `$(am__distuninstallcheck_listfiles) | wc -l` -eq 0 \
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+	        $(distuninstallcheck_listfiles) ; \
+	        exit 1; } >&2
+distcleancheck: distclean
+	@if test '$(srcdir)' = . ; then \
+	  echo "ERROR: distcleancheck can only run from a VPATH build" ; \
+	  exit 1 ; \
+	fi
+	@test `$(distcleancheck_listfiles) | wc -l` -eq 0 \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
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+
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+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-recursive
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+clean-am: clean-generic clean-libtool mostlyclean-am
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+distclean: distclean-recursive
+	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -f Makefile
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+.MAKE: $(RECURSIVE_CLEAN_TARGETS) $(RECURSIVE_TARGETS) all \
+	ctags-recursive install-am install-strip tags-recursive
+
+.PHONY: $(RECURSIVE_CLEAN_TARGETS) $(RECURSIVE_TARGETS) CTAGS GTAGS \
+	all all-am am--refresh check check-am clean clean-generic \
+	clean-libtool ctags ctags-recursive dist dist-all dist-bzip2 \
+	dist-gzip dist-lzip dist-lzma dist-shar dist-tarZ dist-xz \
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+	install install-am install-data install-data-am \
+	install-dist_docDATA install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
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+	uninstall uninstall-am uninstall-dist_docDATA
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--- a/62
+++ b/62
@ -0,0 +1,62 @@
				@@ -0,0 +1,62 @@
+CityHash v1.1.1, June 17, 2013
+
+  * Fix CityHash32() so platforms that disagree about whether 'char' is signed
+    use the same mathematical function.  For most people this changes nothing
+    as most popular platforms agree with x86 about whether 'char' is signed.
+  * No changes to any of the functions, unless you had been using CityHash32()
+    despite "make check" reporting a failure on your platform.
+  * Slightly modernize and improve configuration and portability.
+
+CityHash v1.1, October 22, 2012
+
+  * Add CityHash32(), intended for 32-bit platforms.
+  * Change existing functions to improve their hash quality and/or speed.  Most
+    of the changes were minor, but CityHashCrc* was substantially reworked
+    (and made perhaps 10% slower, unfortunately).
+  * Improve README.
+
+CityHash v1.0.3, October 6, 2011
+
+  * Change all the functions to improve their hash quality.  Most of the
+    changes were minor.  Special thanks to Bob Jenkins for reporting some
+    issues that he'd found.  The speed of the functions after these changes is
+    roughly unchanged, except that CityHash128() and CityHash128WithSeed() are
+    slower.
+  * To improve portability, replace the one use of ssize_t with signed long.
+  * Improve README.
+
+CityHash v1.0.2, May 8, 2011
+
+  * Correct a problem in CityHashCrc256(); for inputs under 240 bytes the
+    scheme of padding to 240 bytes was causing the empty string and an input
+    of exactly 240 NULs to have the same hash code.  That is now fixed.
+    Most strings less than 240 bytes long will have a different hash than
+    they did in v1.0.1.
+  * Other hash functions are unchanged.
+  * Minor corrections and improvements to README.
+
+CityHash v1.0.1, April 28, 2011
+
+  * Added README, NEWS, and COPYING.  The README contains installation and
+    usage instructions, information on "hash quality," and other goodies.
+  * Improved how CityHash128() and CityHash128WithSeed() handle very short
+    input strings.
+  * Added new functions that are faster on long strings on 64-bit CPUs with
+    a CRC32 instruction: CityHashCrc128(), CityHashCrc128WithSeed(), and
+    CityHashCrc256().
+  * Removed our assumption that "*(const uint64*)p" and such is safe.  Now we
+    memcpy() instead. It has no speed penalty and makes our intent explicit
+    to the compiler.
+  * Changed #include "city.h" to #include <city.h>, suggested by Robert Escriva.
+  * Added build system, a modified version of one contributed by Robert Escriva.
+  * We now use __builtin_expect if the configure script can make it work, rather
+    than just on gcc.
+  * Added a test: use "make check" to run it.  If you compile CityHash in a way
+    that causes it to return unexpected results, the test should fail.
+  * Added untested big-endian support. Please let us know if you try it!
+  * Other than CityHash128() and CityHash128WithSeed(), the hash functions in
+    the previous release are unchanged.
+
+CityHash v1, April 11, 2011
+
+  * Initial release
--- a/196
+++ b/196
@ -0,0 +1,196 @@
				@@ -0,0 +1,196 @@
+CityHash, a family of hash functions for strings.
+
+
+Introduction
+============
+
+CityHash provides hash functions for strings.  The functions mix the
+input bits thoroughly but are not suitable for cryptography.  See
+"Hash Quality," below, for details on how CityHash was tested and so on.
+
+We provide reference implementations in C++, with a friendly MIT license.
+
+CityHash32() returns a 32-bit hash.
+
+CityHash64() and similar return a 64-bit hash.
+
+CityHash128() and similar return a 128-bit hash and are tuned for
+strings of at least a few hundred bytes.  Depending on your compiler
+and hardware, it's likely faster than CityHash64() on sufficiently long
+strings.  It's slower than necessary on shorter strings, but we expect
+that case to be relatively unimportant.
+
+CityHashCrc128() and similar are variants of CityHash128() that depend
+on _mm_crc32_u64(), an intrinsic that compiles to a CRC32 instruction
+on some CPUs.  However, none of the functions we provide are CRCs.
+
+CityHashCrc256() is a variant of CityHashCrc128() that also depends
+on _mm_crc32_u64().  It returns a 256-bit hash.
+
+All members of the CityHash family were designed with heavy reliance
+on previous work by Austin Appleby, Bob Jenkins, and others.
+For example, CityHash32 has many similarities with Murmur3a.
+
+Performance on long strings: 64-bit CPUs
+========================================
+ 
+We are most excited by the performance of CityHash64() and its variants on
+short strings, but long strings are interesting as well.
+
+CityHash is intended to be fast, under the constraint that it hash very
+well.  For CPUs with the CRC32 instruction, CRC is speedy, but CRC wasn't
+designed as a hash function and shouldn't be used as one.  CityHashCrc128()
+is not a CRC, but it uses the CRC32 machinery.
+
+On a single core of a 2.67GHz Intel Xeon X5550, CityHashCrc256 peaks at about
+5 to 5.5 bytes/cycle.  The other CityHashCrc functions are wrappers around
+CityHashCrc256 and should have similar performance on long strings.
+(CityHashCrc256 in v1.0.3 was even faster, but we decided it wasn't as thorough
+as it should be.)  CityHash128 peaks at about 4.3 bytes/cycle.  The fastest
+Murmur variant on that hardware, Murmur3F, peaks at about 2.4 bytes/cycle.
+We expect the peak speed of CityHash128 to dominate CityHash64, which is
+aimed more toward short strings or use in hash tables.
+
+For long strings, a new function by Bob Jenkins, SpookyHash, is just
+slightly slower than CityHash128 on Intel x86-64 CPUs, but noticeably
+faster on AMD x86-64 CPUs.  For hashing long strings on AMD CPUs
+and/or CPUs without the CRC instruction, SpookyHash may be just as
+good or better than any of the CityHash variants.
+
+Performance on short strings: 64-bit CPUs
+=========================================
+
+For short strings, e.g., most hash table keys, CityHash64 is faster than
+CityHash128, and probably faster than all the aforementioned functions,
+depending on the mix of string lengths.  Here are a few results from that
+same hardware, where we (unrealistically) tested a single string length over
+and over again:
+
+Hash              Results
+------------------------------------------------------------------------------
+CityHash64 v1.0.3 7ns for 1 byte, or 6ns for 8 bytes, or 9ns for 64 bytes
+Murmur2 (64-bit)  6ns for 1 byte, or 6ns for 8 bytes, or 15ns for 64 bytes
+Murmur3F          14ns for 1 byte, or 15ns for 8 bytes, or 23ns for 64 bytes
+
+We don't have CityHash64 benchmarks results for v1.1, but we expect the
+numbers to be similar.
+
+Performance: 32-bit CPUs
+========================
+
+CityHash32 is the newest variant of CityHash.  It is intended for
+32-bit hardware in general but has been mostly tested on x86.  Our benchmarks
+suggest that Murmur3 is the nearest competitor to CityHash32 on x86.
+We don't know of anything faster that has comparable quality.  The speed rankings
+in our testing: CityHash32 > Murmur3f > Murmur3a (for long strings), and
+CityHash32 > Murmur3a > Murmur3f (for short strings).
+
+Installation
+============
+
+We provide reference implementations of several CityHash functions, written
+in C++.  The build system is based on autoconf.  It defaults the C++
+compiler flags to "-g -O2", which is probably slower than -O3 if you are
+using gcc.  YMMV.
+
+On systems with gcc, we generally recommend:
+
+./configure
+make all check CXXFLAGS="-g -O3"
+sudo make install
+
+Or, if your system has the CRC32 instruction, and you want to build everything:
+
+./configure --enable-sse4.2
+make all check CXXFLAGS="-g -O3 -msse4.2"
+sudo make install
+
+Note that our build system doesn't try to determine the appropriate compiler
+flag for enabling SSE4.2.  For gcc it is "-msse4.2".  The --enable-sse4.2
+flag to the configure script controls whether citycrc.h is installed when
+you "make install."  In general, picking the right compiler flags can be
+tricky, and may depend on your compiler, your hardware, and even how you
+plan to use the library.
+
+For generic information about how to configure this software, please try:
+
+./configure --help
+
+Failing that, please work from city.cc and city*.h, as they contain all the
+necessary code.
+
+
+Usage
+=====
+
+The above installation instructions will produce a single library.  It will
+contain CityHash32(), CityHash64(), and CityHash128(), and their variants,
+and possibly CityHashCrc128(), CityHashCrc128WithSeed(), and
+CityHashCrc256().  The functions with Crc in the name are declared in
+citycrc.h; the rest are declared in city.h.
+
+
+Limitations
+===========
+
+1) CityHash32 is intended for little-endian 32-bit code, and everything else in
+the current version of CityHash is intended for little-endian 64-bit CPUs.
+
+All functions that don't use the CRC32 instruction should work in
+little-endian 32-bit or 64-bit code.  CityHash should work on big-endian CPUs
+as well, but we haven't tested that very thoroughly yet.
+
+2) CityHash is fairly complex.  As a result of its complexity, it may not
+perform as expected on some compilers.  For example, preliminary reports
+suggest that some Microsoft compilers compile CityHash to assembly that's
+10-20% slower than it could be.
+
+
+Hash Quality
+============
+
+We like to test hash functions with SMHasher, among other things.
+SMHasher isn't perfect, but it seems to find almost any significant flaw.
+SMHasher is available at http://code.google.com/p/smhasher/
+
+SMHasher is designed to pass a 32-bit seed to the hash functions it tests.
+No CityHash function is designed to work that way, so we adapt as follows:
+For our functions that accept a seed, we use the given seed directly (padded
+with zeroes); for our functions that don't accept a seed, we hash the
+concatenation of the given seed and the input string.
+
+The CityHash functions have the following flaws according to SMHasher:
+
+(1) CityHash64: none
+
+(2) CityHash64WithSeed: none
+
+(3) CityHash64WithSeeds: did not test
+
+(4) CityHash128: none
+
+(5) CityHash128WithSeed: none
+
+(6) CityHashCrc128: none
+
+(7) CityHashCrc128WithSeed: none
+
+(8) CityHashCrc256: none
+
+(9) CityHash32: none
+
+Some minor flaws in 32-bit and 64-bit functions are harmless, as we
+expect the primary use of these functions will be in hash tables.  We
+may have gone slightly overboard in trying to please SMHasher and other
+similar tests, but we don't want anyone to choose a different hash function
+because of some minor issue reported by a quality test.
+
+
+For more information
+====================
+
+http://code.google.com/p/cityhash/
+
+cityhash-discuss@googlegroups.com
+
+Please feel free to send us comments, questions, bug reports, or patches.
--- a/aclocal.m4
+++ b/aclocal.m4
@ -0,0 +1,976 @@
				@@ -0,0 +1,976 @@
+# generated automatically by aclocal 1.11.3 -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation,
+# Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+m4_ifndef([AC_AUTOCONF_VERSION],
+  [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
+m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],,
+[m4_warning([this file was generated for autoconf 2.69.
+You have another version of autoconf.  It may work, but is not guaranteed to.
+If you have problems, you may need to regenerate the build system entirely.
+To do so, use the procedure documented by the package, typically `autoreconf'.])])
+
+# Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008, 2011 Free Software
+# Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 1
+
+# AM_AUTOMAKE_VERSION(VERSION)
+# ----------------------------
+# Automake X.Y traces this macro to ensure aclocal.m4 has been
+# generated from the m4 files accompanying Automake X.Y.
+# (This private macro should not be called outside this file.)
+AC_DEFUN([AM_AUTOMAKE_VERSION],
+[am__api_version='1.11'
+dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
+dnl require some minimum version.  Point them to the right macro.
+m4_if([$1], [1.11.3], [],
+      [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
+])
+
+# _AM_AUTOCONF_VERSION(VERSION)
+# -----------------------------
+# aclocal traces this macro to find the Autoconf version.
+# This is a private macro too.  Using m4_define simplifies
+# the logic in aclocal, which can simply ignore this definition.
+m4_define([_AM_AUTOCONF_VERSION], [])
+
+# AM_SET_CURRENT_AUTOMAKE_VERSION
+# -------------------------------
+# Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
+# This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
+AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
+[AM_AUTOMAKE_VERSION([1.11.3])dnl
+m4_ifndef([AC_AUTOCONF_VERSION],
+  [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
+_AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
+
+# AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
+
+# Copyright (C) 2001, 2003, 2005, 2011 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 1
+
+# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
+# $ac_aux_dir to `$srcdir/foo'.  In other projects, it is set to
+# `$srcdir', `$srcdir/..', or `$srcdir/../..'.
+#
+# Of course, Automake must honor this variable whenever it calls a
+# tool from the auxiliary directory.  The problem is that $srcdir (and
+# therefore $ac_aux_dir as well) can be either absolute or relative,
+# depending on how configure is run.  This is pretty annoying, since
+# it makes $ac_aux_dir quite unusable in subdirectories: in the top
+# source directory, any form will work fine, but in subdirectories a
+# relative path needs to be adjusted first.
+#
+# $ac_aux_dir/missing
+#    fails when called from a subdirectory if $ac_aux_dir is relative
+# $top_srcdir/$ac_aux_dir/missing
+#    fails if $ac_aux_dir is absolute,
+#    fails when called from a subdirectory in a VPATH build with
+#          a relative $ac_aux_dir
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+# harmless because $srcdir is `.', but things will broke when you
+# start a VPATH build or use an absolute $srcdir.
+#
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+# iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
+#   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
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+#   MISSING="\${SHELL} $am_aux_dir/missing"
+# This will work as long as MISSING is not called from configure, because
+# unfortunately $(top_srcdir) has no meaning in configure.
+# However there are other variables, like CC, which are often used in
+# configure, and could therefore not use this "fixed" $ac_aux_dir.
+#
+# Another solution, used here, is to always expand $ac_aux_dir to an
+# absolute PATH.  The drawback is that using absolute paths prevent a
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+
+AC_DEFUN([AM_AUX_DIR_EXPAND],
+[dnl Rely on autoconf to set up CDPATH properly.
+AC_PREREQ([2.50])dnl
+# expand $ac_aux_dir to an absolute path
+am_aux_dir=`cd $ac_aux_dir && pwd`
+])
+
+# AM_CONDITIONAL                                            -*- Autoconf -*-
+
+# Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 9
+
+# AM_CONDITIONAL(NAME, SHELL-CONDITION)
+# -------------------------------------
+# Define a conditional.
+AC_DEFUN([AM_CONDITIONAL],
+[AC_PREREQ(2.52)dnl
+ ifelse([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
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+AC_SUBST([$1_TRUE])dnl
+AC_SUBST([$1_FALSE])dnl
+_AM_SUBST_NOTMAKE([$1_TRUE])dnl
+_AM_SUBST_NOTMAKE([$1_FALSE])dnl
+m4_define([_AM_COND_VALUE_$1], [$2])dnl
+if $2; then
+  $1_TRUE=
+  $1_FALSE='#'
+else
+  $1_TRUE='#'
+  $1_FALSE=
+fi
+AC_CONFIG_COMMANDS_PRE(
+[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
+  AC_MSG_ERROR([[conditional "$1" was never defined.
+Usually this means the macro was only invoked conditionally.]])
+fi])])
+
+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009,
+# 2010, 2011 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 12
+
+# There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
+# written in clear, in which case automake, when reading aclocal.m4,
+# will think it sees a *use*, and therefore will trigger all it's
+# C support machinery.  Also note that it means that autoscan, seeing
+# CC etc. in the Makefile, will ask for an AC_PROG_CC use...
+
+
+# _AM_DEPENDENCIES(NAME)
+# ----------------------
+# See how the compiler implements dependency checking.
+# NAME is "CC", "CXX", "GCJ", or "OBJC".
+# We try a few techniques and use that to set a single cache variable.
+#
+# We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
+# modified to invoke _AM_DEPENDENCIES(CC); we would have a circular
+# dependency, and given that the user is not expected to run this macro,
+# just rely on AC_PROG_CC.
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+[AC_REQUIRE([AM_SET_DEPDIR])dnl
+AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
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+AC_REQUIRE([AM_DEP_TRACK])dnl
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+AC_CACHE_CHECK([dependency style of $depcc],
+               [am_cv_$1_dependencies_compiler_type],
+[if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
+  # We make a subdir and do the tests there.  Otherwise we can end up
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+  # making a dummy file named `D' -- because `-MD' means `put the output
+  # in D'.
+  rm -rf conftest.dir
+  mkdir conftest.dir
+  # Copy depcomp to subdir because otherwise we won't find it if we're
+  # using a relative directory.
+  cp "$am_depcomp" conftest.dir
+  cd conftest.dir
+  # We will build objects and dependencies in a subdirectory because
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+  # both Tru64's cc and ICC support -MD to output dependencies as a
+  # side effect of compilation, but ICC will put the dependencies in
+  # the current directory while Tru64 will put them in the object
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+  if test "$am_compiler_list" = ""; then
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+  am__universal=false
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+    [case " $depcc " in #(
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+    [case " $depcc " in #(
+     *\ -arch\ *\ -arch\ *) am__universal=true ;;
+     esac])
+
+  for depmode in $am_compiler_list; do
+    # Setup a source with many dependencies, because some compilers
+    # like to wrap large dependency lists on column 80 (with \), and
+    # we should not choose a depcomp mode which is confused by this.
+    #
+    # We need to recreate these files for each test, as the compiler may
+    # overwrite some of them when testing with obscure command lines.
+    # This happens at least with the AIX C compiler.
+    : > sub/conftest.c
+    for i in 1 2 3 4 5 6; do
+      echo '#include "conftst'$i'.h"' >> sub/conftest.c
+      # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+      # Solaris 8's {/usr,}/bin/sh.
+      touch sub/conftst$i.h
+    done
+    echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+
+    # We check with `-c' and `-o' for the sake of the "dashmstdout"
+    # mode.  It turns out that the SunPro C++ compiler does not properly
+    # handle `-M -o', and we need to detect this.  Also, some Intel
+    # versions had trouble with output in subdirs
+    am__obj=sub/conftest.${OBJEXT-o}
+    am__minus_obj="-o $am__obj"
+    case $depmode in
+    gcc)
+      # This depmode causes a compiler race in universal mode.
+      test "$am__universal" = false || continue
+      ;;
+    nosideeffect)
+      # after this tag, mechanisms are not by side-effect, so they'll
+      # only be used when explicitly requested
+      if test "x$enable_dependency_tracking" = xyes; then
+	continue
+      else
+	break
+      fi
+      ;;
+    msvc7 | msvc7msys | msvisualcpp | msvcmsys)
+      # This compiler won't grok `-c -o', but also, the minuso test has
+      # not run yet.  These depmodes are late enough in the game, and
+      # so weak that their functioning should not be impacted.
+      am__obj=conftest.${OBJEXT-o}
+      am__minus_obj=
+      ;;
+    none) break ;;
+    esac
+    if depmode=$depmode \
+       source=sub/conftest.c object=$am__obj \
+       depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+       $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
+         >/dev/null 2>conftest.err &&
+       grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
+       grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+       grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
+       ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
+      # icc doesn't choke on unknown options, it will just issue warnings
+      # or remarks (even with -Werror).  So we grep stderr for any message
+      # that says an option was ignored or not supported.
+      # When given -MP, icc 7.0 and 7.1 complain thusly:
+      #   icc: Command line warning: ignoring option '-M'; no argument required
+      # The diagnosis changed in icc 8.0:
+      #   icc: Command line remark: option '-MP' not supported
+      if (grep 'ignoring option' conftest.err ||
+          grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+        am_cv_$1_dependencies_compiler_type=$depmode
+        break
+      fi
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+  cd ..
+  rm -rf conftest.dir
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+  am_cv_$1_dependencies_compiler_type=none
+fi
+])
+AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
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+
+
+# AM_SET_DEPDIR
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+AC_DEFUN([AM_SET_DEPDIR],
+[AC_REQUIRE([AM_SET_LEADING_DOT])dnl
+AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
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+  am_depcomp="$ac_aux_dir/depcomp"
+  AMDEPBACKSLASH='\'
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+_AM_SUBST_NOTMAKE([am__nodep])dnl
+])
+
+# Generate code to set up dependency tracking.              -*- Autoconf -*-
+
+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+#serial 5
+
+# _AM_OUTPUT_DEPENDENCY_COMMANDS
+# ------------------------------
+AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
+[{
+  # Autoconf 2.62 quotes --file arguments for eval, but not when files
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+  # if we detect the quoting.
+  case $CONFIG_FILES in
+  *\'*) eval set x "$CONFIG_FILES" ;;
+  *)   set x $CONFIG_FILES ;;
+  esac
+  shift
+  for mf
+  do
+    # Strip MF so we end up with the name of the file.
+    mf=`echo "$mf" | sed -e 's/:.*$//'`
+    # Check whether this is an Automake generated Makefile or not.
+    # We used to match only the files named `Makefile.in', but
+    # some people rename them; so instead we look at the file content.
+    # Grep'ing the first line is not enough: some people post-process
+    # each Makefile.in and add a new line on top of each file to say so.
+    # Grep'ing the whole file is not good either: AIX grep has a line
+    # limit of 2048, but all sed's we know have understand at least 4000.
+    if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
+      dirpart=`AS_DIRNAME("$mf")`
+    else
+      continue
+    fi
+    # Extract the definition of DEPDIR, am__include, and am__quote
+    # from the Makefile without running `make'.
+    DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
+    test -z "$DEPDIR" && continue
+    am__include=`sed -n 's/^am__include = //p' < "$mf"`
+    test -z "am__include" && continue
+    am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
+    # When using ansi2knr, U may be empty or an underscore; expand it
+    U=`sed -n 's/^U = //p' < "$mf"`
+    # Find all dependency output files, they are included files with
+    # $(DEPDIR) in their names.  We invoke sed twice because it is the
+    # simplest approach to changing $(DEPDIR) to its actual value in the
+    # expansion.
+    for file in `sed -n "
+      s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
+	 sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
+      # Make sure the directory exists.
+      test -f "$dirpart/$file" && continue
+      fdir=`AS_DIRNAME(["$file"])`
+      AS_MKDIR_P([$dirpart/$fdir])
+      # echo "creating $dirpart/$file"
+      echo '# dummy' > "$dirpart/$file"
+    done
+  done
+}
+])# _AM_OUTPUT_DEPENDENCY_COMMANDS
+
+
+# AM_OUTPUT_DEPENDENCY_COMMANDS
+# -----------------------------
+# This macro should only be invoked once -- use via AC_REQUIRE.
+#
+# This code is only required when automatic dependency tracking
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+# need in order to bootstrap the dependency handling code.
+AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
+[AC_CONFIG_COMMANDS([depfiles],
+     [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
+     [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
+])
+
+# Do all the work for Automake.                             -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+# 2005, 2006, 2008, 2009 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 16
+
+# This macro actually does too much.  Some checks are only needed if
+# your package does certain things.  But this isn't really a big deal.
+
+# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
+# AM_INIT_AUTOMAKE([OPTIONS])
+# -----------------------------------------------
+# The call with PACKAGE and VERSION arguments is the old style
+# call (pre autoconf-2.50), which is being phased out.  PACKAGE
+# and VERSION should now be passed to AC_INIT and removed from
+# the call to AM_INIT_AUTOMAKE.