Update files

cpp/thirdpart/kenlm/util/string_stream_test.cc

+#define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
+#define BOOST_TEST_MODULE FakeOStreamTest
+
+#include "string_stream.hh"
+#include <boost/test/unit_test.hpp>
+#include <boost/lexical_cast.hpp>
+
+#include <cstddef>
+#include <limits>
+
+namespace util { namespace {
+
+template <class T> void TestEqual(const T value) {
+  StringStream strme;
+  strme << value;
+  BOOST_CHECK_EQUAL(boost::lexical_cast<std::string>(value), strme.str());
+}
+
+template <class T> void TestCorners() {
+  TestEqual(std::numeric_limits<T>::max());
+  TestEqual(std::numeric_limits<T>::min());
+  TestEqual(static_cast<T>(0));
+  TestEqual(static_cast<T>(-1));
+  TestEqual(static_cast<T>(1));
+}
+
+BOOST_AUTO_TEST_CASE(Integer) {
+  TestCorners<char>();
+  TestCorners<signed char>();
+  TestCorners<unsigned char>();
+
+  TestCorners<short>();
+  TestCorners<signed short>();
+  TestCorners<unsigned short>();
+
+  TestCorners<int>();
+  TestCorners<unsigned int>();
+  TestCorners<signed int>();
+
+  TestCorners<long>();
+  TestCorners<unsigned long>();
+  TestCorners<signed long>();
+
+  TestCorners<long long>();
+  TestCorners<unsigned long long>();
+  TestCorners<signed long long>();
+
+  TestCorners<std::size_t>();
+}
+
+enum TinyEnum { EnumValue };
+
+BOOST_AUTO_TEST_CASE(EnumCase) {
+  TestEqual(EnumValue);
+}
+
+BOOST_AUTO_TEST_CASE(Strings) {
+  TestEqual("foo");
+  const char *a = "bar";
+  TestEqual(a);
+  StringPiece piece("abcdef");
+  TestEqual(piece);
+  TestEqual(StringPiece());
+
+  char non_const[3];
+  non_const[0] = 'b';
+  non_const[1] = 'c';
+  non_const[2] = 0;
+
+  StringStream out;
+  out << "a" << non_const << 'c';
+  BOOST_CHECK_EQUAL("abcc", out.str());
+
+  // Now test as a separate object.
+  StringStream stream;
+  stream << "a" << non_const << 'c' << piece;
+  BOOST_CHECK_EQUAL("abccabcdef", stream.str());
+}
+
+}} // namespaces

cpp/thirdpart/kenlm/util/thread_pool.hh

+#ifndef UTIL_THREAD_POOL_H
+#define UTIL_THREAD_POOL_H
+
+#include "pcqueue.hh"
+
+#include <boost/ptr_container/ptr_vector.hpp>
+#include <boost/optional.hpp>
+#include <boost/thread.hpp>
+
+#include <iostream>
+#include <cstdlib>
+
+namespace util {
+
+template <class HandlerT> class Worker : boost::noncopyable {
+  public:
+    typedef HandlerT Handler;
+    typedef typename Handler::Request Request;
+
+    template <class Construct> Worker(PCQueue<Request> &in, Construct &construct, const Request &poison)
+      : in_(in), handler_(construct), poison_(poison), thread_(boost::ref(*this)) {}
+
+    // Only call from thread.
+    void operator()() {
+      Request request;
+      while (1) {
+        in_.Consume(request);
+        if (request == poison_) return;
+        try {
+          (*handler_)(request);
+        }
+        catch(const std::exception &e) {
+          std::cerr << "Handler threw " << e.what() << std::endl;
+          abort();
+        }
+        catch(...) {
+          std::cerr << "Handler threw an exception, dropping request" << std::endl;
+          abort();
+        }
+      }
+    }
+
+    void Join() {
+      thread_.join();
+    }
+
+  private:
+    PCQueue<Request> &in_;
+
+    boost::optional<Handler> handler_;
+
+    const Request poison_;
+
+    boost::thread thread_;
+};
+
+template <class HandlerT> class ThreadPool : boost::noncopyable {
+  public:
+    typedef HandlerT Handler;
+    typedef typename Handler::Request Request;
+
+    template <class Construct> ThreadPool(std::size_t queue_length, std::size_t workers, Construct handler_construct, Request poison) : in_(queue_length), poison_(poison) {
+      for (size_t i = 0; i < workers; ++i) {
+        workers_.push_back(new Worker<Handler>(in_, handler_construct, poison));
+      }
+    }
+
+    ~ThreadPool() {
+      for (std::size_t i = 0; i < workers_.size(); ++i) {
+        Produce(poison_);
+      }
+      for (typename boost::ptr_vector<Worker<Handler> >::iterator i = workers_.begin(); i != workers_.end(); ++i) {
+        i->Join();
+      }
+    }
+
+    void Produce(const Request &request) {
+      in_.Produce(request);
+    }
+
+    // For adding to the queue.
+    PCQueue<Request> &In() { return in_; }
+
+  private:
+    PCQueue<Request> in_;
+
+    boost::ptr_vector<Worker<Handler> > workers_;
+
+    Request poison_;
+};
+
+template <class Handler> class RecyclingHandler {
+  public:
+    typedef typename Handler::Request Request;
+
+    template <class Construct> RecyclingHandler(PCQueue<Request> &recycling, Construct &handler_construct)
+      : inner_(handler_construct), recycling_(recycling) {}
+
+    void operator()(Request &request) {
+      inner_(request);
+      recycling_.Produce(request);
+    }
+
+  private:
+    Handler inner_;
+    PCQueue<Request> &recycling_;
+};
+
+template <class HandlerT> class RecyclingThreadPool : boost::noncopyable {
+  public:
+    typedef HandlerT Handler;
+    typedef typename Handler::Request Request;
+
+    // Remember to call PopulateRecycling afterwards in most cases.
+    template <class Construct> RecyclingThreadPool(std::size_t queue, std::size_t workers, Construct handler_construct, Request poison)
+      : recycling_(queue), pool_(queue, workers, RecyclingHandler<Handler>(recycling_, handler_construct), poison) {}
+
+    // Initialization: put stuff into the recycling queue.  This could also be
+    // done by calling Produce without Consume, but it's often easier to
+    // initialize with PopulateRecycling then do a Consume/Produce loop.
+    void PopulateRecycling(const Request &request) {
+      recycling_.Produce(request);
+    }
+
+    Request Consume() {
+      return recycling_.Consume();
+    }
+
+    void Produce(const Request &request) {
+      pool_.Produce(request);
+    }
+    
+  private:
+    PCQueue<Request> recycling_;
+    ThreadPool<RecyclingHandler<Handler> > pool_;
+};
+
+} // namespace util
+
+#endif // UTIL_THREAD_POOL_H

cpp/thirdpart/kenlm/util/tokenize_piece.hh

+#ifndef UTIL_TOKENIZE_PIECE_H
+#define UTIL_TOKENIZE_PIECE_H
+
+#include "exception.hh"
+#include "spaces.hh"
+#include "string_piece.hh"
+
+#include <algorithm>
+#include <cstring>
+#include <iterator>
+
+namespace util {
+
+// Thrown on dereference when out of tokens to parse
+class OutOfTokens : public Exception {
+  public:
+    OutOfTokens() throw() {}
+    ~OutOfTokens() throw() {}
+};
+
+class SingleCharacter {
+  public:
+    SingleCharacter() {}
+    explicit SingleCharacter(char delim) : delim_(delim) {}
+
+    StringPiece Find(const StringPiece &in) const {
+      return StringPiece(std::find(in.data(), in.data() + in.size(), delim_), 1);
+    }
+
+  private:
+    char delim_;
+};
+
+class MultiCharacter {
+  public:
+    MultiCharacter() {}
+
+    explicit MultiCharacter(const StringPiece &delimiter) : delimiter_(delimiter) {}
+
+    StringPiece Find(const StringPiece &in) const {
+      return StringPiece(std::search(in.data(), in.data() + in.size(), delimiter_.data(), delimiter_.data() + delimiter_.size()), delimiter_.size());
+    }
+
+  private:
+    StringPiece delimiter_;
+};
+
+class AnyCharacter {
+  public:
+    AnyCharacter() {}
+    explicit AnyCharacter(const StringPiece &chars) : chars_(chars) {}
+
+    StringPiece Find(const StringPiece &in) const {
+      return StringPiece(std::find_first_of(in.data(), in.data() + in.size(), chars_.data(), chars_.data() + chars_.size()), 1);
+    }
+
+  private:
+    StringPiece chars_;
+};
+
+class BoolCharacter {
+  public:
+    BoolCharacter() {}
+
+    explicit BoolCharacter(const bool *delimiter = kSpaces) { delimiter_ = delimiter; }
+
+    StringPiece Find(const StringPiece &in) const {
+      for (const char *i = in.data(); i != in.data() + in.size(); ++i) {
+        if (delimiter_[static_cast<unsigned char>(*i)]) return StringPiece(i, 1);
+      }
+      return StringPiece(in.data() + in.size(), 0);
+    }
+
+    template <unsigned Length> static void Build(const char (&characters)[Length], bool (&out)[256]) {
+      memset(out, 0, sizeof(out));
+      for (const char *i = characters; i != characters + Length; ++i) {
+        out[static_cast<unsigned char>(*i)] = true;
+      }
+    }
+
+  private:
+    const bool *delimiter_;
+};
+
+class AnyCharacterLast {
+  public:
+    AnyCharacterLast() {}
+
+    explicit AnyCharacterLast(const StringPiece &chars) : chars_(chars) {}
+
+    StringPiece Find(const StringPiece &in) const {
+      return StringPiece(std::find_end(in.data(), in.data() + in.size(), chars_.data(), chars_.data() + chars_.size()), 1);
+    }
+
+  private:
+    StringPiece chars_;
+};
+
+template <class Find, bool SkipEmpty = false> class TokenIter : public std::iterator<std::forward_iterator_tag, const StringPiece, std::ptrdiff_t, const StringPiece *, const StringPiece &> {
+  public:
+    TokenIter() {}
+
+    template <class Construct> TokenIter(const StringPiece &str, const Construct &construct) : after_(str), finder_(construct) {
+      ++*this;
+    }
+
+    bool operator!() const {
+      return current_.data() == 0;
+    }
+    operator bool() const {
+      return current_.data() != 0;
+    }
+
+    static TokenIter<Find, SkipEmpty> end() {
+      return TokenIter<Find, SkipEmpty>();
+    }
+
+    bool operator==(const TokenIter<Find, SkipEmpty> &other) const {
+      return current_.data() == other.current_.data();
+    }
+
+    bool operator!=(const TokenIter<Find, SkipEmpty> &other) const {
+      return !(*this == other);
+    }
+
+    TokenIter<Find, SkipEmpty> &operator++() {
+      do {
+        StringPiece found(finder_.Find(after_));
+        current_ = StringPiece(after_.data(), found.data() - after_.data());
+        if (found.data() == after_.data() + after_.size()) {
+          after_ = StringPiece(NULL, 0);
+        } else {
+          after_ = StringPiece(found.data() + found.size(), after_.data() - found.data() + after_.size() - found.size());
+        }
+      } while (SkipEmpty && current_.data() && current_.empty()); // Compiler should optimize this away if SkipEmpty is false.
+      return *this;
+    }
+
+    TokenIter<Find, SkipEmpty> &operator++(int) {
+      TokenIter<Find, SkipEmpty> ret(*this);
+      ++*this;
+      return ret;
+    }
+
+    const StringPiece &operator*() const {
+      UTIL_THROW_IF(!current_.data(), OutOfTokens, "Ran out of tokens");
+      return current_;
+    }
+    const StringPiece *operator->() const {
+      UTIL_THROW_IF(!current_.data(), OutOfTokens, "Ran out of tokens");
+      return &current_;
+    }
+
+  private:
+    StringPiece current_;
+    StringPiece after_;
+
+    Find finder_;
+};
+
+inline StringPiece Trim(StringPiece str, const bool *spaces = kSpaces) {
+  while (!str.empty() && spaces[static_cast<unsigned char>(*str.data())]) {
+    str = StringPiece(str.data() + 1, str.size() - 1);
+  }
+  while (!str.empty() && spaces[static_cast<unsigned char>(str.data()[str.size() - 1])]) {
+    str = StringPiece(str.data(), str.size() - 1);
+  }
+  return str;
+}
+
+} // namespace util
+
+#endif // UTIL_TOKENIZE_PIECE_H

cpp/thirdpart/kenlm/util/tokenize_piece_test.cc

+#include "tokenize_piece.hh"
+#include "string_piece.hh"
+
+#define BOOST_TEST_MODULE TokenIteratorTest
+#include <boost/test/unit_test.hpp>
+
+#include <iostream>
+
+namespace util {
+namespace {
+
+BOOST_AUTO_TEST_CASE(pipe_pipe_none) {
+  const char str[] = "nodelimit at all";
+  TokenIter<MultiCharacter> it(str, MultiCharacter("|||"));
+  BOOST_REQUIRE(it);
+  BOOST_CHECK_EQUAL(StringPiece(str), *it);
+  ++it;
+  BOOST_CHECK(!it);
+}
+BOOST_AUTO_TEST_CASE(pipe_pipe_two) {
+  const char str[] = "|||";
+  TokenIter<MultiCharacter> it(str, MultiCharacter("|||"));
+  BOOST_REQUIRE(it);
+  BOOST_CHECK_EQUAL(StringPiece(), *it);
+  ++it;
+  BOOST_REQUIRE(it);
+  BOOST_CHECK_EQUAL(StringPiece(), *it);
+  ++it;
+  BOOST_CHECK(!it);
+}
+
+BOOST_AUTO_TEST_CASE(remove_empty) {
+  const char str[] = "|||";
+  TokenIter<MultiCharacter, true> it(str, MultiCharacter("|||"));
+  BOOST_CHECK(!it);
+}
+
+BOOST_AUTO_TEST_CASE(remove_empty_keep) {
+  const char str[] = " |||";
+  TokenIter<MultiCharacter, true> it(str, MultiCharacter("|||"));
+  BOOST_REQUIRE(it);
+  BOOST_CHECK_EQUAL(StringPiece(" "), *it);
+  ++it;
+  BOOST_CHECK(!it);
+}
+
+} // namespace
+} // namespace util

cpp/thirdpart/kenlm/util/usage.cc

+#include "usage.hh"
+
+#include "exception.hh"
+
+#include <fstream>
+#include <ostream>
+#include <sstream>
+#include <set>
+#include <string>
+#include <cstring>
+#include <cctype>
+#include <ctime>
+#if defined(_WIN32) || defined(_WIN64)
+// This code lifted from physmem.c in gnulib.  See the copyright statement
+// below.
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/*  MEMORYSTATUSEX is missing from older windows headers, so define
+    a local replacement.  */
+typedef struct
+{
+  DWORD dwLength;
+  DWORD dwMemoryLoad;
+  DWORDLONG ullTotalPhys;
+  DWORDLONG ullAvailPhys;
+  DWORDLONG ullTotalPageFile;
+  DWORDLONG ullAvailPageFile;
+  DWORDLONG ullTotalVirtual;
+  DWORDLONG ullAvailVirtual;
+  DWORDLONG ullAvailExtendedVirtual;
+} lMEMORYSTATUSEX;
+// Is this really supposed to be defined like this?
+typedef int WINBOOL;
+typedef WINBOOL (WINAPI *PFN_MS_EX) (lMEMORYSTATUSEX*);
+#else
+#include <sys/resource.h>
+#include <sys/time.h>
+#include <unistd.h>
+#endif
+
+#if defined(__MACH__) || defined(__APPLE__)
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <mach/task.h>
+#include <mach/mach.h>
+#include <libproc.h>
+#endif
+
+namespace util {
+namespace {
+
+#if defined(__MACH__)
+typedef struct timeval Wall;
+Wall GetWall() {
+  struct timeval tv;
+  gettimeofday(&tv, NULL);
+  return tv;
+}
+#elif defined(_WIN32) || defined(_WIN64)
+typedef time_t Wall;
+Wall GetWall() {
+  return time(NULL);
+}
+#else
+typedef struct timespec Wall;
+Wall GetWall() {
+  Wall ret;
+  UTIL_THROW_IF(-1 == clock_gettime(CLOCK_MONOTONIC, &ret), ErrnoException, "Could not get wall time");
+  return ret;
+}
+#endif
+
+// gcc possible-unused function flags
+#ifdef __GNUC__
+double Subtract(time_t first, time_t second) __attribute__ ((unused));
+double DoubleSec(time_t tv) __attribute__ ((unused));
+#if !defined(_WIN32) && !defined(_WIN64)
+double Subtract(const struct timeval &first, const struct timeval &second) __attribute__ ((unused));
+double Subtract(const struct timespec &first, const struct timespec &second) __attribute__ ((unused));
+double DoubleSec(const struct timeval &tv) __attribute__ ((unused));
+double DoubleSec(const struct timespec &tv) __attribute__ ((unused));
+#endif
+#endif
+
+// Some of these functions are only used on some platforms.
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-function"
+#endif
+// These all assume first > second
+double Subtract(time_t first, time_t second) {
+  return difftime(first, second);
+}
+double DoubleSec(time_t tv) {
+  return static_cast<double>(tv);
+}
+#if !defined(_WIN32) && !defined(_WIN64)
+double Subtract(const struct timeval &first, const struct timeval &second) {
+  return static_cast<double>(first.tv_sec - second.tv_sec) + static_cast<double>(first.tv_usec - second.tv_usec) / 1000000.0;
+}
+double Subtract(const struct timespec &first, const struct timespec &second) {
+  return static_cast<double>(first.tv_sec - second.tv_sec) + static_cast<double>(first.tv_nsec - second.tv_nsec) / 1000000000.0;
+}
+double DoubleSec(const struct timeval &tv) {
+  return static_cast<double>(tv.tv_sec) + (static_cast<double>(tv.tv_usec) / 1000000.0);
+}
+double DoubleSec(const struct timespec &tv) {
+  return static_cast<double>(tv.tv_sec) + (static_cast<double>(tv.tv_nsec) / 1000000000.0);
+}
+#endif
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
+class RecordStart {
+  public:
+    RecordStart() {
+      started_ = GetWall();
+    }
+
+    const Wall &Started() const {
+      return started_;
+    }
+
+  private:
+    Wall started_;
+};
+
+const RecordStart kRecordStart;
+
+const char *SkipSpaces(const char *at) {
+  for (; *at == ' ' || *at == '\t'; ++at) {}
+  return at;
+}
+} // namespace
+
+double WallTime() {
+  return Subtract(GetWall(), kRecordStart.Started());
+}
+
+double CPUTime() {
+#if defined(_WIN32) || defined(_WIN64)
+  return 0.0;
+#elif defined(__MACH__) || defined(__FreeBSD__) || defined(__APPLE__)
+  struct rusage usage;
+  UTIL_THROW_IF(getrusage(RUSAGE_SELF, &usage), ErrnoException, "getrusage failed");
+  return DoubleSec(usage.ru_utime) + DoubleSec(usage.ru_stime);
+#else
+  struct timespec usage;
+  UTIL_THROW_IF(clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &usage), ErrnoException, "clock_gettime failed?!"); 
+  return DoubleSec(usage);
+#endif
+}
+
+double ThreadTime() {
+#if defined(_WIN32) || defined(_WIN64)
+  // Output parameters for querying thread CPU usage:
+  FILETIME sys_time, user_time;
+  // Unused, but apparently need to be passed:
+  FILETIME c_time, e_time;
+
+  HANDLE this_thread = GetCurrentThread();
+  UTIL_THROW_IF(!GetThreadTimes(this_thread, &c_time, &e_time, &sys_time, &user_time), WindowsException, "GetThreadTime");
+  // Convert LPFILETIME to 64-bit number, and from there to double.
+  ULARGE_INTEGER sys_ticks, user_ticks;
+  sys_ticks.LowPart = sys_time.dwLowDateTime;
+  sys_ticks.HighPart = sys_time.dwHighDateTime;
+  user_ticks.LowPart = user_time.dwLowDateTime;
+  user_ticks.HighPart = user_time.dwHighDateTime;
+  const double ticks = double(sys_ticks.QuadPart + user_ticks.QuadPart);
+  // GetThreadTimes() reports in units of 100 nanoseconds, i.e. ten-millionths
+  // of a second.
+  return ticks / (10 * 1000 * 1000);
+#elif defined(HAVE_CLOCKGETTIME)
+  struct timespec usage;
+  UTIL_THROW_IF(clock_gettime(CLOCK_THREAD_CPUTIME_ID, &usage), ErrnoException, "clock_gettime failed?!");
+  return DoubleSec(usage);
+#elif defined(__MACH__) || defined(__APPLE__)
+  struct task_basic_info t_info;
+  mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT;  
+  task_info(mach_task_self(), TASK_BASIC_INFO, (task_info_t)&t_info, &t_info_count);
+  
+  return 0.0;
+#endif
+}
+
+uint64_t RSSMax() {
+#if defined(_WIN32) || defined(_WIN64)
+  return 0;
+#else
+  struct rusage usage;
+  if (getrusage(RUSAGE_SELF, &usage))
+    return 0;
+  return static_cast<uint64_t>(usage.ru_maxrss) * 1024;
+#endif
+}
+
+void PrintUsage(std::ostream &out) {
+#if !defined(_WIN32) && !defined(_WIN64)
+  #if defined(__MACH__) || defined(__APPLE__)
+  struct mach_task_basic_info t_info;
+  char name[2 * MAXCOMLEN] = {0};
+
+  proc_name(getpid(), name, sizeof(name));
+  mach_msg_type_number_t t_info_count = MACH_TASK_BASIC_INFO_COUNT;
+  task_info(mach_task_self(), MACH_TASK_BASIC_INFO, (task_info_t)&t_info, &t_info_count);
+
+  out << name << '\t';
+  out << t_info.resident_size_max << '\t';
+  out << t_info.resident_size << '\t';
+  #else
+  // Linux doesn't set memory usage in getrusage :-(
+  std::set<std::string> headers;
+  headers.insert("Name:");
+  headers.insert("VmPeak:");
+  headers.insert("VmRSS:");
+
+  std::ifstream status("/proc/self/status", std::ios::in);
+  std::string header, value;
+  while ((status >> header) && getline(status, value)) {
+    if (headers.find(header) != headers.end()) {
+      out << header << SkipSpaces(value.c_str()) << '\t';
+    }
+  }
+  #endif
+
+  struct rusage usage;
+  if (getrusage(RUSAGE_SELF, &usage)) {
+    perror("getrusage");
+    return;
+  }
+  out << "RSSMax:" << usage.ru_maxrss << " kB" << '\t';
+  out << "user:" << DoubleSec(usage.ru_utime) << "\tsys:" << DoubleSec(usage.ru_stime) << '\t';
+  out << "CPU:" << CPUTime() << '\t';
+#endif
+
+  out << "real:" << WallTime() << '\n';
+}
+
+/* Adapted from physmem.c in gnulib 831b84c59ef413c57a36b67344467d66a8a2ba70 */
+/* Calculate the size of physical memory.
+
+   Copyright (C) 2000-2001, 2003, 2005-2006, 2009-2013 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation; either version 2.1 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+uint64_t GuessPhysicalMemory() {
+#if defined(_SC_PHYS_PAGES) && defined(_SC_PAGESIZE)
+  {
+    long pages = sysconf(_SC_PHYS_PAGES);
+    long page_size = sysconf(_SC_PAGESIZE);
+    if (pages != -1 && page_size != -1)
+      return static_cast<uint64_t>(pages) * static_cast<uint64_t>(page_size);
+  }
+#endif
+#ifdef HW_PHYSMEM
+  { /* This works on *bsd and darwin.  */
+    unsigned int physmem;
+    size_t len = sizeof physmem;
+    static int mib[2] = { CTL_HW, HW_PHYSMEM };
+
+    if (sysctl (mib, sizeof(mib) / sizeof(mib[0]), &physmem, &len, NULL, 0) == 0
+        && len == sizeof (physmem))
+      return static_cast<uint64_t>(physmem);
+  }
+#endif
+
+#if defined(_WIN32) || defined(_WIN64)
+  { /* this works on windows */
+    PFN_MS_EX pfnex;
+    HMODULE h = GetModuleHandle (TEXT("kernel32.dll"));
+
+    if (!h)
+      return 0;
+
+    /*  Use GlobalMemoryStatusEx if available.  */
+    if ((pfnex = (PFN_MS_EX) GetProcAddress (h, "GlobalMemoryStatusEx")))
+      {
+        lMEMORYSTATUSEX lms_ex;
+        lms_ex.dwLength = sizeof lms_ex;
+        if (!pfnex (&lms_ex))
+          return 0;
+        return lms_ex.ullTotalPhys;
+      }
+
+    /*  Fall back to GlobalMemoryStatus which is always available.
+        but returns wrong results for physical memory > 4GB.  */
+    else
+      {
+        MEMORYSTATUS ms;
+        GlobalMemoryStatus (&ms);
+        return ms.dwTotalPhys;
+      }
+  }
+#endif
+  return 0;
+}
+
+namespace {
+class SizeParseError : public Exception {
+  public:
+    explicit SizeParseError(const std::string &str) throw() {
+      *this << "Failed to parse " << str << " into a memory size ";
+    }
+};
+
+template <class Num> uint64_t ParseNum(const std::string &arg) {
+  std::stringstream stream(arg);
+  Num value;
+  stream >> value;
+  UTIL_THROW_IF_ARG(!stream, SizeParseError, (arg), "for the leading number.");
+  std::string after;
+  stream >> after;
+  UTIL_THROW_IF_ARG(after.size() > 1, SizeParseError, (arg), "because there are more than two characters after the number.");
+  std::string throwaway;
+  UTIL_THROW_IF_ARG(stream >> throwaway, SizeParseError, (arg), "because there was more cruft " << throwaway << " after the number.");
+
+  // Silly sort, using kilobytes as your default unit.
+  if (after.empty()) after = "K";
+  if (after == "%") {
+    uint64_t mem = GuessPhysicalMemory();
+    UTIL_THROW_IF_ARG(!mem, SizeParseError, (arg), "because % was specified but the physical memory size could not be determined.");
+    return static_cast<uint64_t>(static_cast<double>(value) * static_cast<double>(mem) / 100.0);
+  }
+
+  if (after == "k") after = "K";
+  std::string units("bKMGTPEZY");
+  std::string::size_type index = units.find(after[0]);
+  UTIL_THROW_IF_ARG(index == std::string::npos, SizeParseError, (arg), "the allowed suffixes are " << units << "%.");
+  for (std::string::size_type i = 0; i < index; ++i) {
+    value *= 1024;
+  }
+  return static_cast<uint64_t>(value);
+}
+
+} // namespace
+
+uint64_t ParseSize(const std::string &arg) {
+  return arg.find('.') == std::string::npos ? ParseNum<double>(arg) : ParseNum<uint64_t>(arg);
+}
+
+} // namespace util

cpp/thirdpart/kenlm/util/usage.hh

+#ifndef UTIL_USAGE_H
+#define UTIL_USAGE_H
+#include <cstddef>
+#include <iosfwd>
+#include <string>
+#include <stdint.h>
+
+namespace util {
+// Time in seconds since process started.  Zero on unsupported platforms.
+double WallTime();
+
+// User + system time, process-wide.
+double CPUTime();
+
+// User + system time, thread-specific.
+double ThreadTime();
+
+// Resident usage in bytes.
+uint64_t RSSMax();
+
+void PrintUsage(std::ostream &to);
+
+// Determine how much physical memory there is.  Return 0 on failure.
+uint64_t GuessPhysicalMemory();
+
+// Parse a size like unix sort.  Sadly, this means the default multiplier is K.
+uint64_t ParseSize(const std::string &arg);
+
+} // namespace util
+#endif // UTIL_USAGE_H

cpp/thirdpart/openfst/AUTHORS

+Principal Contacts:
+
+Cyril Allauzen     <allauzen@google.com>
+Michael Riley      <riley@google.com>
+
+Contributors:
+
+These contributions range from fundamental algorithmic contributions (e.g.,
+Mehryar Mohri) to implementation of core components and extensions.
+
+Tom Bagby
+Dan Bikel
+Kyle Gorman
+Martin Jansche
+Boulos Harb
+Mehryar Mohri
+Dan Povey
+Kasturi Raghavan
+Jacob Ratkiewicz
+Jesse Rosenstock
+Johan Schalkwyk
+Masha Shugrina
+Wojtek Skut
+Jeffrey Sorensen
+Richard Sproat
+Ananda Theertha Suresh
+Terry Tai
+Ke Wu

cpp/thirdpart/openfst/BUGS.md

+# OpenFST Windows Port Bugs And Limitations
+
+"Fixed in" means that all previous releases are likely affected.
+
+## Fixed in win/1.7.2.1+01
+
+* stdout newline conversion of binary data (#20)
+
+## Unimplemented features
+
+* Memory-mapped files are not supported (we may add the support in the future
+  though), because it is very system-dependent. OpenFST supports reading e. g.
+  CompactFST files into allocated memory when memory mapping is not compiled in.
+  Since Kaldi is now using it, this is on an implementation track, issue #31.
+
+* Dynamic registration of arc and FST types is not supported in the Visual Studio
+  project versions (as they build only static libraries). CMake build does not
+  have this limitation. Due to ABI being specific to Microsoft compiler version,
+  dynamically registered types must be compiled with strictly the same compiler
+  of the same major version, and mostly same build flags. This is quite hard to
+  get right, and is not recommended. No current plans to implement.

cpp/thirdpart/openfst/BUILD.bazel

+# Copyright 2015-2019 Google LLC. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])  # Apache 2.0
+
+exports_files(["COPYING"])
+
+prefix_dir = "src/"
+
+static_binary = 1
+
+# Core library (lib/)
+
+cc_library(
+    name = "fst-decl",
+    hdrs = [prefix_dir + "include/fst/fst-decl.h"],
+    includes = [prefix_dir + "include"],
+    deps = [":base"],
+)
+
+PUBLIC_HEADERS = [
+    # One-stop header file which includes the remaining headers below:
+    prefix_dir + "include/fst/fstlib.h",
+
+    # Fine-grained headers:
+    prefix_dir + "include/fst/accumulator.h",
+    prefix_dir + "include/fst/add-on.h",
+    prefix_dir + "include/fst/arc-arena.h",
+    prefix_dir + "include/fst/arc-map.h",
+    prefix_dir + "include/fst/arc.h",
+    prefix_dir + "include/fst/arcfilter.h",
+    prefix_dir + "include/fst/arcsort.h",
+    prefix_dir + "include/fst/bi-table.h",
+    prefix_dir + "include/fst/cache.h",
+    prefix_dir + "include/fst/closure.h",
+    prefix_dir + "include/fst/compact-fst.h",
+    prefix_dir + "include/fst/complement.h",
+    prefix_dir + "include/fst/compose-filter.h",
+    prefix_dir + "include/fst/compose.h",
+    prefix_dir + "include/fst/concat.h",
+    prefix_dir + "include/fst/connect.h",
+    prefix_dir + "include/fst/const-fst.h",
+    prefix_dir + "include/fst/determinize.h",
+    prefix_dir + "include/fst/dfs-visit.h",
+    prefix_dir + "include/fst/difference.h",
+    prefix_dir + "include/fst/disambiguate.h",
+    prefix_dir + "include/fst/edit-fst.h",
+    prefix_dir + "include/fst/encode.h",
+    prefix_dir + "include/fst/epsnormalize.h",
+    prefix_dir + "include/fst/equal.h",
+    prefix_dir + "include/fst/equivalent.h",
+    prefix_dir + "include/fst/expanded-fst.h",
+    prefix_dir + "include/fst/factor-weight.h",
+    prefix_dir + "include/fst/filter-state.h",
+    prefix_dir + "include/fst/fst.h",
+    prefix_dir + "include/fst/heap.h",
+    prefix_dir + "include/fst/intersect.h",
+    prefix_dir + "include/fst/invert.h",
+    prefix_dir + "include/fst/isomorphic.h",
+    prefix_dir + "include/fst/label-reachable.h",
+    prefix_dir + "include/fst/lookahead-filter.h",
+    prefix_dir + "include/fst/lookahead-matcher.h",
+    prefix_dir + "include/fst/map.h",
+    prefix_dir + "include/fst/matcher-fst.h",
+    prefix_dir + "include/fst/matcher.h",
+    prefix_dir + "include/fst/memory.h",
+    prefix_dir + "include/fst/minimize.h",
+    prefix_dir + "include/fst/mutable-fst.h",
+    prefix_dir + "include/fst/partition.h",
+    prefix_dir + "include/fst/project.h",
+    prefix_dir + "include/fst/properties.h",
+    prefix_dir + "include/fst/prune.h",
+    prefix_dir + "include/fst/push.h",
+    prefix_dir + "include/fst/queue.h",
+    prefix_dir + "include/fst/randequivalent.h",
+    prefix_dir + "include/fst/randgen.h",
+    prefix_dir + "include/fst/rational.h",
+    prefix_dir + "include/fst/relabel.h",
+    prefix_dir + "include/fst/replace-util.h",
+    prefix_dir + "include/fst/replace.h",
+    prefix_dir + "include/fst/reverse.h",
+    prefix_dir + "include/fst/reweight.h",
+    prefix_dir + "include/fst/rmepsilon.h",
+    prefix_dir + "include/fst/rmfinalepsilon.h",
+    prefix_dir + "include/fst/shortest-distance.h",
+    prefix_dir + "include/fst/shortest-path.h",
+    prefix_dir + "include/fst/state-map.h",
+    prefix_dir + "include/fst/state-reachable.h",
+    prefix_dir + "include/fst/state-table.h",
+    prefix_dir + "include/fst/statesort.h",
+    prefix_dir + "include/fst/string.h",
+    prefix_dir + "include/fst/symbol-table-ops.h",
+    prefix_dir + "include/fst/synchronize.h",
+    prefix_dir + "include/fst/test-properties.h",
+    prefix_dir + "include/fst/topsort.h",
+    prefix_dir + "include/fst/union.h",
+    prefix_dir + "include/fst/vector-fst.h",
+    prefix_dir + "include/fst/verify.h",
+    prefix_dir + "include/fst/visit.h",
+]
+
+# This version does not have the export-dynamic flag set and should not be
+# used to load dynamic-shared object FST extensions. Please see the
+# "lib_export_dynamic" target below for binaries that need DSO loading.
+cc_library(
+    name = "lib_lite",
+    srcs = [
+        prefix_dir + "lib/fst.cc",
+        prefix_dir + "lib/properties.cc",
+        prefix_dir + "lib/symbol-table-ops.cc",
+    ],
+    hdrs = PUBLIC_HEADERS,
+    copts = ["-Wno-sign-compare"],
+    includes = [prefix_dir + "include"],
+    linkopts = ["-lm"],
+    deps = [
+        ":base",
+        ":fst-decl",
+        ":icu",
+        ":interval-set",
+        ":register",
+        ":symbol-table",
+        ":union-find",
+        ":util",
+        ":weight",
+    ],
+)
+
+cc_library(
+    name = "fst",
+    hdrs = PUBLIC_HEADERS,
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fst-types",
+        ":lib_lite",
+    ],
+)
+
+cc_library(
+    name = "lib_export_dynamic",
+    linkopts = ["-Wl,--export-dynamic"],
+    deps = [":fst"],
+)
+
+cc_library(
+    name = "fst-types",
+    srcs = [prefix_dir + "lib/fst-types.cc"],
+    deps = [":lib_lite"],
+    alwayslink = 1,  # because of registration
+)
+
+cc_library(
+    name = "symbol-table",
+    srcs = [prefix_dir + "lib/symbol-table.cc"],
+    hdrs = [prefix_dir + "include/fst/symbol-table.h"],
+    copts = ["-Wno-sign-compare"],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":base",
+        ":util",
+    ],
+)
+
+cc_library(
+    name = "weight",
+    srcs = [prefix_dir + "lib/weight.cc"],
+    hdrs = [
+        prefix_dir + "include/fst/expectation-weight.h",
+        prefix_dir + "include/fst/float-weight.h",
+        prefix_dir + "include/fst/lexicographic-weight.h",
+        prefix_dir + "include/fst/pair-weight.h",
+        prefix_dir + "include/fst/power-weight.h",
+        prefix_dir + "include/fst/product-weight.h",
+        prefix_dir + "include/fst/set-weight.h",
+        prefix_dir + "include/fst/signed-log-weight.h",
+        prefix_dir + "include/fst/sparse-power-weight.h",
+        prefix_dir + "include/fst/sparse-tuple-weight.h",
+        prefix_dir + "include/fst/string-weight.h",
+        prefix_dir + "include/fst/tuple-weight.h",
+        prefix_dir + "include/fst/union-weight.h",
+        prefix_dir + "include/fst/weight.h",
+    ],
+    includes = [prefix_dir + "include"],
+    linkopts = ["-lm"],
+    deps = [
+        ":base",
+        ":util",
+    ],
+)
+
+cc_library(
+    name = "interval-set",
+    hdrs = [prefix_dir + "include/fst/interval-set.h"],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":base",
+        ":util",
+    ],
+)
+
+cc_library(
+    name = "register",
+    hdrs = [
+        prefix_dir + "include/fst/generic-register.h",
+        prefix_dir + "include/fst/register.h",
+    ],
+    includes = [prefix_dir + "include"],
+    linkopts = ["-ldl"],
+    deps = [
+        ":base",
+        ":util",
+    ],
+)
+
+cc_library(
+    name = "icu",
+    hdrs = [
+        prefix_dir + "include/fst/icu.h",
+    ],
+)
+
+cc_library(
+    name = "union-find",
+    hdrs = [prefix_dir + "include/fst/union-find.h"],
+    includes = [prefix_dir + "include"],
+    deps = [":base"],
+)
+
+cc_library(
+    name = "util",
+    srcs = [
+        prefix_dir + "lib/mapped-file.cc",
+        prefix_dir + "lib/util.cc",
+    ],
+    hdrs = [
+        prefix_dir + "include/fst/mapped-file.h",
+        prefix_dir + "include/fst/util.h",
+    ],
+    includes = [prefix_dir + "include"],
+    deps = [":base"],
+)
+
+cc_library(
+    name = "base",
+    srcs = [
+        prefix_dir + "lib/compat.cc",
+        prefix_dir + "lib/flags.cc",
+    ],
+    hdrs = [
+        prefix_dir + "include/fst/compat.h",
+        prefix_dir + "include/fst/config.h",
+        prefix_dir + "include/fst/flags.h",
+        prefix_dir + "include/fst/icu.h",
+        prefix_dir + "include/fst/lock.h",
+        prefix_dir + "include/fst/log.h",
+        prefix_dir + "include/fst/types.h",
+    ],
+    includes = [prefix_dir + "include"],
+)
+
+# Core library tests (test/)
+
+cc_test(
+    name = "fst_test",
+    timeout = "short",
+    srcs = [
+        prefix_dir + "test/fst_test.cc",
+        prefix_dir + "include/fst/test/fst_test.h",
+    ],
+    deps = [":fst"],
+)
+
+cc_library(
+    name = "weight-tester",
+    testonly = 1,
+    hdrs = [prefix_dir + "include/fst/test/weight-tester.h"],
+    includes = [prefix_dir],
+    deps = [":weight"],
+)
+
+cc_test(
+    name = "weight_test",
+    timeout = "short",
+    srcs = [prefix_dir + "test/weight_test.cc"],
+    copts = ["-Wno-unused-local-typedefs"],
+    deps = [
+        ":fst",
+        ":weight-tester",
+    ],
+)
+
+[
+    cc_test(
+        name = "algo_test_%s" % weight,
+        srcs = [
+            prefix_dir + "test/algo_test.cc",
+            prefix_dir + "include/fst/test/algo_test.h",
+            prefix_dir + "include/fst/test/rand-fst.h",
+        ],
+        defines = ["TEST_%s" % weight.upper()],
+        deps = [":fst"],
+    )
+    for weight in [
+        "tropical",
+        "log",
+        "minmax",
+        "lexicographic",
+        "power",
+    ]
+]
+
+# Non-template scripting-language integration (script/)
+
+cc_library(
+    name = "fstscript_base",
+    srcs = [
+        prefix_dir + "script/arciterator-class.cc",
+        prefix_dir + "script/encodemapper-class.cc",
+        prefix_dir + "script/fst-class.cc",
+        prefix_dir + "script/getters.cc",
+        prefix_dir + "script/stateiterator-class.cc",
+        prefix_dir + "script/text-io.cc",
+        prefix_dir + "script/weight-class.cc",
+    ],
+    hdrs = [
+        prefix_dir + "include/fst/script/arc-class.h",
+        prefix_dir + "include/fst/script/arciterator-class.h",
+        prefix_dir + "include/fst/script/arg-packs.h",
+        prefix_dir + "include/fst/script/encodemapper-class.h",
+        prefix_dir + "include/fst/script/fst-class.h",
+        prefix_dir + "include/fst/script/fstscript-decl.h",
+        prefix_dir + "include/fst/script/fstscript.h",
+        prefix_dir + "include/fst/script/getters.h",
+        prefix_dir + "include/fst/script/register.h",
+        prefix_dir + "include/fst/script/script-impl.h",
+        prefix_dir + "include/fst/script/stateiterator-class.h",
+        prefix_dir + "include/fst/script/text-io.h",
+        prefix_dir + "include/fst/script/weight-class.h",
+        #
+        prefix_dir + "include/fst/script/arcsort.h",
+        prefix_dir + "include/fst/script/closure.h",
+        prefix_dir + "include/fst/script/compile.h",
+        prefix_dir + "include/fst/script/compile-impl.h",
+        prefix_dir + "include/fst/script/compose.h",
+        prefix_dir + "include/fst/script/concat.h",
+        prefix_dir + "include/fst/script/connect.h",
+        prefix_dir + "include/fst/script/convert.h",
+        prefix_dir + "include/fst/script/decode.h",
+        prefix_dir + "include/fst/script/determinize.h",
+        prefix_dir + "include/fst/script/difference.h",
+        prefix_dir + "include/fst/script/disambiguate.h",
+        prefix_dir + "include/fst/script/draw.h",
+        prefix_dir + "include/fst/script/draw-impl.h",
+        prefix_dir + "include/fst/script/encode.h",
+        prefix_dir + "include/fst/script/epsnormalize.h",
+        prefix_dir + "include/fst/script/equal.h",
+        prefix_dir + "include/fst/script/equivalent.h",
+        prefix_dir + "include/fst/script/info.h",
+        prefix_dir + "include/fst/script/info-impl.h",
+        prefix_dir + "include/fst/script/intersect.h",
+        prefix_dir + "include/fst/script/invert.h",
+        prefix_dir + "include/fst/script/isomorphic.h",
+        prefix_dir + "include/fst/script/map.h",
+        prefix_dir + "include/fst/script/minimize.h",
+        prefix_dir + "include/fst/script/print.h",
+        prefix_dir + "include/fst/script/print-impl.h",
+        prefix_dir + "include/fst/script/project.h",
+        prefix_dir + "include/fst/script/prune.h",
+        prefix_dir + "include/fst/script/push.h",
+        prefix_dir + "include/fst/script/randequivalent.h",
+        prefix_dir + "include/fst/script/randgen.h",
+        prefix_dir + "include/fst/script/relabel.h",
+        prefix_dir + "include/fst/script/replace.h",
+        prefix_dir + "include/fst/script/reverse.h",
+        prefix_dir + "include/fst/script/reweight.h",
+        prefix_dir + "include/fst/script/rmepsilon.h",
+        prefix_dir + "include/fst/script/shortest-distance.h",
+        prefix_dir + "include/fst/script/shortest-path.h",
+        prefix_dir + "include/fst/script/synchronize.h",
+        prefix_dir + "include/fst/script/topsort.h",
+        prefix_dir + "include/fst/script/union.h",
+        prefix_dir + "include/fst/script/verify.h",
+    ],
+    copts = ["-Wno-sign-compare"],
+    includes = [prefix_dir + "include"],
+    deps = [":fst"],
+)
+
+[
+    cc_library(
+        name = "fstscript_%s" % operation,
+        srcs = [prefix_dir + "script/%s.cc" % operation],
+        hdrs = [prefix_dir + "include/fst/script/%s.h" % operation],
+        includes = [prefix_dir + "include"],
+        deps = [":fstscript_base"],
+    )
+    for operation in [
+        "arcsort",
+        "closure",
+        "concat",
+        "connect",
+        "convert",
+        "decode",
+        "determinize",
+        "disambiguate",
+        "encode",
+        "epsnormalize",
+        "equal",
+        "equivalent",
+        "invert",
+        "isomorphic",
+        "map",
+        "minimize",
+        "project",
+        "prune",
+        "push",
+        "randgen",
+        "relabel",
+        "replace",
+        "reverse",
+        "reweight",
+        "synchronize",
+        "topsort",
+        "union",
+        "verify",
+    ]
+]
+
+cc_library(
+    name = "fstscript_compile",
+    srcs = [prefix_dir + "script/compile.cc"],
+    hdrs = [
+        prefix_dir + "include/fst/script/compile.h",
+        prefix_dir + "include/fst/script/compile-impl.h",
+    ],
+    includes = [prefix_dir + "include"],
+    deps = [":fstscript_base"],
+)
+
+cc_library(
+    name = "fstscript_compose",
+    srcs = [prefix_dir + "script/compose.cc"],
+    hdrs = [prefix_dir + "include/fst/script/compose.h"],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fstscript_base",
+        ":fstscript_connect",
+    ],
+)
+
+cc_library(
+    name = "fstscript_difference",
+    srcs = [prefix_dir + "script/difference.cc"],
+    hdrs = [prefix_dir + "include/fst/script/difference.h"],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fstscript_base",
+        ":fstscript_compose",
+    ],
+)
+
+cc_library(
+    name = "fstscript_draw",
+    srcs = [prefix_dir + "script/draw.cc"],
+    hdrs = [
+        prefix_dir + "include/fst/script/draw.h",
+        prefix_dir + "include/fst/script/draw-impl.h",
+    ],
+    includes = [prefix_dir + "include"],
+    deps = [":fstscript_base"],
+)
+
+cc_library(
+    name = "fstscript_info",
+    srcs = [
+        prefix_dir + "script/info.cc",
+        prefix_dir + "script/info-impl.cc",
+    ],
+    hdrs = [
+        prefix_dir + "include/fst/script/info.h",
+        prefix_dir + "include/fst/script/info-impl.h",
+    ],
+    includes = [prefix_dir + "include"],
+    deps = [":fstscript_base"],
+)
+
+cc_library(
+    name = "fstscript_intersect",
+    srcs = [prefix_dir + "script/intersect.cc"],
+    hdrs = [prefix_dir + "include/fst/script/intersect.h"],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fstscript_base",
+        ":fstscript_compose",
+    ],
+)
+
+cc_library(
+    name = "fstscript_print",
+    srcs = [prefix_dir + "script/print.cc"],
+    hdrs = [
+        prefix_dir + "include/fst/script/print.h",
+        prefix_dir + "include/fst/script/print-impl.h",
+    ],
+    includes = [prefix_dir + "include"],
+    deps = [":fstscript_base"],
+)
+
+cc_library(
+    name = "fstscript_randequivalent",
+    srcs = [prefix_dir + "script/randequivalent.cc"],
+    hdrs = [prefix_dir + "include/fst/script/randequivalent.h"],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fstscript_base",
+        ":fstscript_randgen",
+    ],
+)
+
+cc_library(
+    name = "fstscript_rmepsilon",
+    srcs = [prefix_dir + "script/rmepsilon.cc"],
+    hdrs = [prefix_dir + "include/fst/script/rmepsilon.h"],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fstscript_base",
+        ":fstscript_shortest_distance",
+    ],
+)
+
+cc_library(
+    name = "fstscript_shortest_distance",
+    srcs = [prefix_dir + "script/shortest-distance.cc"],
+    hdrs = [prefix_dir + "include/fst/script/shortest-distance.h"],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fstscript_base",
+        ":fstscript_prune",
+    ],
+)
+
+cc_library(
+    name = "fstscript_shortest_path",
+    srcs = [prefix_dir + "script/shortest-path.cc"],
+    hdrs = [prefix_dir + "include/fst/script/shortest-path.h"],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fstscript_base",
+        ":fstscript_shortest_distance",
+    ],
+)
+
+cc_library(
+    name = "fstscript",
+    deps = [
+        ":fstscript_arcsort",
+        ":fstscript_closure",
+        ":fstscript_compile",
+        ":fstscript_compose",
+        ":fstscript_concat",
+        ":fstscript_connect",
+        ":fstscript_convert",
+        ":fstscript_decode",
+        ":fstscript_determinize",
+        ":fstscript_difference",
+        ":fstscript_disambiguate",
+        ":fstscript_draw",
+        ":fstscript_encode",
+        ":fstscript_epsnormalize",
+        ":fstscript_equal",
+        ":fstscript_equivalent",
+        ":fstscript_info",
+        ":fstscript_intersect",
+        ":fstscript_invert",
+        ":fstscript_isomorphic",
+        ":fstscript_map",
+        ":fstscript_minimize",
+        ":fstscript_print",
+        ":fstscript_project",
+        ":fstscript_prune",
+        ":fstscript_push",
+        ":fstscript_randequivalent",
+        ":fstscript_randgen",
+        ":fstscript_relabel",
+        ":fstscript_replace",
+        ":fstscript_reverse",
+        ":fstscript_reweight",
+        ":fstscript_rmepsilon",
+        ":fstscript_shortest_distance",
+        ":fstscript_shortest_path",
+        ":fstscript_synchronize",
+        ":fstscript_topsort",
+        ":fstscript_union",
+        ":fstscript_verify",
+    ],
+)
+
+# Command-line binaries (bin/)
+
+[
+    cc_binary(
+        name = "fst%s" % operation.replace("_", ""),
+        srcs = [
+            prefix_dir + "bin/fst%s.cc" % operation.replace("_", ""),
+            prefix_dir + "bin/fst%s-main.cc" % operation.replace("_", ""),
+        ],
+        linkstatic = static_binary,
+        deps = [":fstscript_%s" % operation],
+    )
+    for operation in [
+        "arcsort",
+        "closure",
+        "compile",
+        "compose",
+        "concat",
+        "connect",
+        "convert",
+        "determinize",
+        "difference",
+        "disambiguate",
+        "draw",
+        "epsnormalize",
+        "equal",
+        "info",
+        "intersect",
+        "invert",
+        "isomorphic",
+        "map",
+        "minimize",
+        "print",
+        "project",
+        "prune",
+        "push",
+        "randgen",
+        "relabel",
+        "replace",
+        "reverse",
+        "reweight",
+        "rmepsilon",
+        "shortest_distance",
+        "shortest_path",
+        "synchronize",
+        "topsort",
+        "union",
+    ]
+]
+
+cc_binary(
+    name = "fstencode",
+    srcs = [
+        prefix_dir + "bin/fstencode.cc",
+        prefix_dir + "bin/fstencode-main.cc",
+    ],
+    linkstatic = static_binary,
+    deps = [
+        ":fstscript_decode",
+        ":fstscript_encode",
+    ],
+)
+
+cc_binary(
+    name = "fstequivalent",
+    srcs = [
+        prefix_dir + "bin/fstequivalent.cc",
+        prefix_dir + "bin/fstequivalent-main.cc",
+    ],
+    linkstatic = static_binary,
+    deps = [
+        ":fstscript_equivalent",
+        ":fstscript_randequivalent",
+    ],
+)
+
+cc_binary(
+    name = "fstsymbols",
+    srcs = [
+        prefix_dir + "bin/fstsymbols.cc",
+        prefix_dir + "bin/fstsymbols-main.cc",
+    ],
+    linkstatic = static_binary,
+    deps = [":fstscript_verify"],
+)
+
+# Extension: Fst ARchive a/k/a FAR (extensions/far/)
+
+cc_library(
+    name = "sttable",
+    srcs = [
+        prefix_dir + "extensions/far/stlist.cc",
+        prefix_dir + "extensions/far/sttable.cc",
+    ],
+    hdrs = [
+        prefix_dir + "include/fst/extensions/far/stlist.h",
+        prefix_dir + "include/fst/extensions/far/sttable.h",
+    ],
+    includes = [prefix_dir + "include"],
+    deps = [":util"],
+)
+
+cc_library(
+    name = "far_base",
+    hdrs = [
+        prefix_dir + "include/fst/extensions/far/far.h",
+    ],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fst",
+        ":sttable",
+    ],
+)
+
+cc_library(
+    name = "far",
+    srcs = [prefix_dir + "extensions/far/strings.cc"],
+    hdrs = [
+        prefix_dir + "include/fst/extensions/far/compile-strings.h",
+        prefix_dir + "include/fst/extensions/far/create.h",
+        prefix_dir + "include/fst/extensions/far/equal.h",
+        prefix_dir + "include/fst/extensions/far/extract.h",
+        prefix_dir + "include/fst/extensions/far/farlib.h",
+        prefix_dir + "include/fst/extensions/far/info.h",
+        prefix_dir + "include/fst/extensions/far/isomorphic.h",
+        prefix_dir + "include/fst/extensions/far/print-strings.h",
+    ],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":far_base",
+        ":fst",
+    ],
+)
+
+cc_library(
+    name = "farscript",
+    srcs = [
+        prefix_dir + "extensions/far/far-class.cc",
+        prefix_dir + "extensions/far/farscript.cc",
+        prefix_dir + "extensions/far/getters.cc",
+        prefix_dir + "extensions/far/script-impl.cc",
+        prefix_dir + "extensions/far/strings.cc",
+    ],
+    hdrs = [
+        prefix_dir + "include/fst/extensions/far/compile-strings.h",
+        prefix_dir + "include/fst/extensions/far/far-class.h",
+        prefix_dir + "include/fst/extensions/far/farscript.h",
+        prefix_dir + "include/fst/extensions/far/getters.h",
+        prefix_dir + "include/fst/extensions/far/script-impl.h",
+    ],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":base",
+        ":far",
+        ":fstscript_base",
+    ],
+)
+
+[
+    cc_binary(
+        name = "far%s" % operation,
+        srcs = [prefix_dir + "extensions/far/far%s.cc" % operation],
+        linkstatic = static_binary,
+        deps = [":farscript"],
+    )
+    for operation in [
+        "compilestrings",
+        "create",
+        "equal",
+        "extract",
+        "info",
+        "isomorphic",
+        "printstrings",
+    ]
+]
+
+# Extension: PushDown Transducers a/k/a PDT (extensions/pdt/)
+
+cc_library(
+    name = "pdt",
+    hdrs = [
+        prefix_dir + "include/fst/extensions/pdt/collection.h",
+        prefix_dir + "include/fst/extensions/pdt/compose.h",
+        prefix_dir + "include/fst/extensions/pdt/expand.h",
+        prefix_dir + "include/fst/extensions/pdt/getters.h",
+        prefix_dir + "include/fst/extensions/pdt/info.h",
+        prefix_dir + "include/fst/extensions/pdt/paren.h",
+        prefix_dir + "include/fst/extensions/pdt/pdt.h",
+        prefix_dir + "include/fst/extensions/pdt/pdtlib.h",
+        prefix_dir + "include/fst/extensions/pdt/replace.h",
+        prefix_dir + "include/fst/extensions/pdt/reverse.h",
+        prefix_dir + "include/fst/extensions/pdt/shortest-path.h",
+    ],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fst",
+    ],
+)
+
+cc_library(
+    name = "pdtscript",
+    srcs = [
+        prefix_dir + "extensions/pdt/getters.cc",
+        prefix_dir + "extensions/pdt/pdtscript.cc",
+    ],
+    hdrs = [
+        prefix_dir + "include/fst/extensions/pdt/getters.h",
+        prefix_dir + "include/fst/extensions/pdt/pdtscript.h",
+    ],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fst",
+        ":fstscript_base",
+        ":pdt",
+    ],
+)
+
+cc_binary(
+    name = "pdtcompose",
+    srcs = [prefix_dir + "extensions/pdt/pdtcompose.cc"],
+    linkstatic = static_binary,
+    deps = [
+        ":fstscript_connect",
+        ":pdtscript",
+    ],
+)
+
+[
+    cc_binary(
+        name = "pdt%s" % operation,
+        srcs = [prefix_dir + "extensions/pdt/pdt%s.cc" % operation],
+        linkstatic = static_binary,
+        deps = [":pdtscript"],
+    )
+    for operation in [
+        "expand",
+        "info",
+        "replace",
+        "reverse",
+        "shortestpath",
+    ]
+]
+
+# Extension: Multi PushDown Transducers a/k/a MPDT (extensions/mpdt/)
+
+cc_library(
+    name = "mpdt",
+    hdrs = [
+        prefix_dir + "include/fst/extensions/mpdt/compose.h",
+        prefix_dir + "include/fst/extensions/mpdt/expand.h",
+        prefix_dir + "include/fst/extensions/mpdt/info.h",
+        prefix_dir + "include/fst/extensions/mpdt/mpdt.h",
+        prefix_dir + "include/fst/extensions/mpdt/mpdtlib.h",
+        prefix_dir + "include/fst/extensions/mpdt/read_write_utils.h",
+        prefix_dir + "include/fst/extensions/mpdt/reverse.h",
+    ],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fst",
+        ":pdt",
+    ],
+)
+
+cc_library(
+    name = "mpdtscript",
+    srcs = [prefix_dir + "extensions/mpdt/mpdtscript.cc"],
+    hdrs = [prefix_dir + "include/fst/extensions/mpdt/mpdtscript.h"],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fst",
+        ":fstscript_base",
+        ":mpdt",
+        ":pdtscript",
+    ],
+)
+
+cc_binary(
+    name = "mpdtcompose",
+    srcs = [prefix_dir + "extensions/mpdt/mpdtcompose.cc"],
+    linkstatic = static_binary,
+    deps = [
+        ":fstscript_connect",
+        ":mpdtscript",
+    ],
+)
+
+[
+    cc_binary(
+        name = "mpdt%s" % operation,
+        srcs = [prefix_dir + "extensions/mpdt/mpdt%s.cc" % operation],
+        linkstatic = static_binary,
+        deps = [":mpdtscript"],
+    )
+    for operation in [
+        "expand",
+        "info",
+        "reverse",
+    ]
+]
+
+# Extension: LOUDS compressed n-gram language models (extensions/ngram/)
+
+cc_library(
+    name = "ngram",
+    srcs = [
+        prefix_dir + "extensions/ngram/bitmap-index.cc",
+        prefix_dir + "extensions/ngram/ngram-fst.cc",
+        prefix_dir + "extensions/ngram/nthbit.cc",
+    ],
+    hdrs = [
+        prefix_dir + "include/fst/extensions/ngram/bitmap-index.h",
+        prefix_dir + "include/fst/extensions/ngram/ngram-fst.h",
+        prefix_dir + "include/fst/extensions/ngram/nthbit.h",
+    ],
+    includes = [prefix_dir + "include"],
+    deps = [
+        ":fst",
+    ],
+)
+
+# TODO: Extensions compact, compress, const, linear, lookahead, python, special

cpp/thirdpart/openfst/CMakeLists.txt

+project(openfst)
+include(CTest)
+find_package(ICU COMPONENTS data i18n io  test tu uc)
+if (ICU_FOUND)
+  include_directories(${ICU_INCLUDE_DIRS})
+  set(LIBS ${LIBS} ${ICU_LIBRARIES})
+endif (ICU_FOUND)
+
+find_package(ZLIB)
+if (ZLIB_FOUND)
+  include_directories(${ZLIB_INCLUDE_DIRECTORIES})
+  set(ZLIBS ${ZLIB_LIBRARIES})
+endif (ZLIB_FOUND)
+
+cmake_minimum_required(VERSION 3.1)
+set(CMAKE_MACOSX_RPATH 1)
+set(CMAKE_CXX_STANDARD 11)
+
+if (WIN32)
+  add_definitions(/bigobj)
+  set(WHOLEFST "/WHOLEARCHIVE:fst")
+  set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${WHOLEFST}")
+  #set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS 1)
+  #this must be disabled unless the previous option (CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS) is enabled
+  option(BUILD_SHARED_LIBS "Build shared libraries" OFF)
+else()
+  option(BUILD_SHARED_LIBS "Build shared libraries" ON)
+endif (WIN32)
+
+set(SOVERSION "16")
+OPTION(BUILD_USE_SOLUTION_FOLDERS "Enable grouping of projects in VS" ON)
+SET_PROPERTY(GLOBAL PROPERTY USE_FOLDERS ${BUILD_USE_SOLUTION_FOLDERS})
+
+
+option(HAVE_BIN          "Build the fst binaries" ON)
+option(HAVE_SCRIPT       "Build the fstscript" ON)
+option(HAVE_COMPACT      "Build compact" ON)
+option(HAVE_COMPRESS "Build compress" OFF)
+option(HAVE_CONST   "Build const" ON)
+option(HAVE_FAR  "Build far" ON)
+option(HAVE_GRM "Build grm" ON)
+option(HAVE_PDT "Build pdt" ON)
+option(HAVE_MPDT "Build mpdt" ON)
+option(HAVE_LINEAR "Build linear" ON)
+option(HAVE_LOOKAHEAD "Build lookahead" ON)
+option(HAVE_NGRAM "Build ngram" ON)
+option(HAVE_PYTHON "Build python" OFF)
+option(HAVE_SPECIAL "Build special" ON)
+
+add_subdirectory(src)
+

cpp/thirdpart/openfst/COPYING

+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use these files except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+Copyright 2005-2018 Google, Inc.

cpp/thirdpart/openfst/INSTALL

+Installation Instructions
+*************************
+
+Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005,
+2006, 2007 Free Software Foundation, Inc.
+
+This file is free documentation; the Free Software Foundation gives
+unlimited permission to copy, distribute and modify it.
+
+Basic Installation
+==================
+
+Briefly, the shell commands `./configure; make; make install' should
+configure, build, and install this package.  The following
+more-detailed instructions are generic; see the `README' file for
+instructions specific to this package.
+
+   The `configure' shell script attempts to guess correct values for
+various system-dependent variables used during compilation.  It uses
+those values to create a `Makefile' in each directory of the package.
+It may also create one or more `.h' files containing system-dependent
+definitions.  Finally, it creates a shell script `config.status' that
+you can run in the future to recreate the current configuration, and a
+file `config.log' containing compiler output (useful mainly for
+debugging `configure').
+
+   It can also use an optional file (typically called `config.cache'
+and enabled with `--cache-file=config.cache' or simply `-C') that saves
+the results of its tests to speed up reconfiguring.  Caching is
+disabled by default to prevent problems with accidental use of stale
+cache files.
+
+   If you need to do unusual things to compile the package, please try
+to figure out how `configure' could check whether to do them, and mail
+diffs or instructions to the address given in the `README' so they can
+be considered for the next release.  If you are using the cache, and at
+some point `config.cache' contains results you don't want to keep, you
+may remove or edit it.
+
+   The file `configure.ac' (or `configure.in') is used to create
+`configure' by a program called `autoconf'.  You need `configure.ac' if
+you want to change it or regenerate `configure' using a newer version
+of `autoconf'.
+
+The simplest way to compile this package is:
+
+  1. `cd' to the directory containing the package's source code and type
+     `./configure' to configure the package for your system.
+
+     Running `configure' might take a while.  While running, it prints
+     some messages telling which features it is checking for.
+
+  2. Type `make' to compile the package.
+
+  3. Optionally, type `make check' to run any self-tests that come with
+     the package.
+
+  4. Type `make install' to install the programs and any data files and
+     documentation.
+
+  5. You can remove the program binaries and object files from the
+     source code directory by typing `make clean'.  To also remove the
+     files that `configure' created (so you can compile the package for
+     a different kind of computer), type `make distclean'.  There is
+     also a `make maintainer-clean' target, but that is intended mainly
+     for the package's developers.  If you use it, you may have to get
+     all sorts of other programs in order to regenerate files that came
+     with the distribution.
+
+  6. Often, you can also type `make uninstall' to remove the installed
+     files again.
+
+Compilers and Options
+=====================
+
+Some systems require unusual options for compilation or linking that the
+`configure' script does not know about.  Run `./configure --help' for
+details on some of the pertinent environment variables.
+
+   You can give `configure' initial values for configuration parameters
+by setting variables in the command line or in the environment.  Here
+is an example:
+
+     ./configure CC=c99 CFLAGS=-g LIBS=-lposix
+
+   *Note Defining Variables::, for more details.
+
+Compiling For Multiple Architectures
+====================================
+
+You can compile the package for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory.  To do this, you can use GNU `make'.  `cd' to the
+directory where you want the object files and executables to go and run
+the `configure' script.  `configure' automatically checks for the
+source code in the directory that `configure' is in and in `..'.
+
+   With a non-GNU `make', it is safer to compile the package for one
+architecture at a time in the source code directory.  After you have
+installed the package for one architecture, use `make distclean' before
+reconfiguring for another architecture.
+
+Installation Names
+==================
+
+By default, `make install' installs the package's commands under
+`/usr/local/bin', include files under `/usr/local/include', etc.  You
+can specify an installation prefix other than `/usr/local' by giving
+`configure' the option `--prefix=PREFIX'.
+
+   You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files.  If you
+pass the option `--exec-prefix=PREFIX' to `configure', the package uses
+PREFIX as the prefix for installing programs and libraries.
+Documentation and other data files still use the regular prefix.
+
+   In addition, if you use an unusual directory layout you can give
+options like `--bindir=DIR' to specify different values for particular
+kinds of files.  Run `configure --help' for a list of the directories
+you can set and what kinds of files go in them.
+
+   If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving `configure' the
+option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
+
+Optional Features
+=================
+
+Some packages pay attention to `--enable-FEATURE' options to
+`configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to `--with-PACKAGE' options, where PACKAGE
+is something like `gnu-as' or `x' (for the X Window System).  The
+`README' should mention any `--enable-' and `--with-' options that the
+package recognizes.
+
+   For packages that use the X Window System, `configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the `configure' options `--x-includes=DIR' and
+`--x-libraries=DIR' to specify their locations.
+
+Specifying the System Type
+==========================
+
+There may be some features `configure' cannot figure out automatically,
+but needs to determine by the type of machine the package will run on.
+Usually, assuming the package is built to be run on the _same_
+architectures, `configure' can figure that out, but if it prints a
+message saying it cannot guess the machine type, give it the
+`--build=TYPE' option.  TYPE can either be a short name for the system
+type, such as `sun4', or a canonical name which has the form:
+
+     CPU-COMPANY-SYSTEM
+
+where SYSTEM can have one of these forms:
+
+     OS KERNEL-OS
+
+   See the file `config.sub' for the possible values of each field.  If
+`config.sub' isn't included in this package, then this package doesn't
+need to know the machine type.
+
+   If you are _building_ compiler tools for cross-compiling, you should
+use the option `--target=TYPE' to select the type of system they will
+produce code for.
+
+   If you want to _use_ a cross compiler, that generates code for a
+platform different from the build platform, you should specify the
+"host" platform (i.e., that on which the generated programs will
+eventually be run) with `--host=TYPE'.
+
+Sharing Defaults
+================
+
+If you want to set default values for `configure' scripts to share, you
+can create a site shell script called `config.site' that gives default
+values for variables like `CC', `cache_file', and `prefix'.
+`configure' looks for `PREFIX/share/config.site' if it exists, then
+`PREFIX/etc/config.site' if it exists.  Or, you can set the
+`CONFIG_SITE' environment variable to the location of the site script.
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cpp/thirdpart/openfst/NEWS

+OpenFst: Release 1.7
+   * Fixes bug with coinaccessible states in NaturalAStarEstimate (1.7.2)
+   * Optionally allows building with Bazel (1.7.2)
+   * Simplifies string printing interface (1.7.2)
+   * Marks weight converters const (1.7.2)
+   * Adds NoMatchComposeFilter (1.7.2)
+   * Removed static assertions that trigger bugs in GCC (1.7.1)
+   * Evaluates many weight operations at compile-time (1.7.1)
+   * Adds configure-time test for float equality reflexivity (1.7.0)
+   * Adds additional overloads to Equals (1.7.0)
+   * Removes volatile qualifiers from float weights (1.7.0)
+   * Improved use of move semantics, especially in cache-backed FSTs (1.7.0)
+   * Protections for signedness in string compiler (1.7.0)
+   * Clean-up to weight constructors (1.7.0)
+
+OpenFst: Release 1.6
+   * Optimized label lookup in SymbolTable (1.6.9)
+   * Fixed PROGRAM_FLAGS documentation string in binaries (1.6.8)
+   * Fixed handling of symbol tables in EpsNormalize (1.6.8)
+   * Fixed HashMatcher issues with SetState() and Find() consistency (1.6.8)
+   * Fixed error reporting when FST arc type unknown (1.6.8)
+   * The `first_path` option to ShortestPath is now optimal for A* (1.6.7)
+   * Renames SymbolTable::kNoSymbol to kNoSymbol (1.6.7)
+   * Exposes PowerMapper to the scripting API (1.6.7)
+   * Fixes linking of the special SOs (1.6.7)
+   * Fixes error handling in HashMatcher (1.6.6)
+   * Adds kShortestDelta for operations dependent on shortest-distance (1.6.6)
+   * Adds Python methods for (un)pickling and (de)serializing FSTs (1.6.6)
+   * Adds constructive variants of Invert and Project (1.6.6)
+   * Increases code sharing in MemoryPool/MemoryArena (1.6.6)
+   * Improves consistency of matcher FST ownership (1.6.6)
+   * Adds non-trivial A* estimator class (1.6.6)
+   * Prevents unreachable code generation in libfstscript (1.6.5)
+   * Adds move constructors for non-trivial weight types (1.6.5)
+   * Standardizes method names for tuple weight types (1.6.5)
+   * Eliminates undefined behavior in weight hashing (1.6.5)
+   * Optimizes binary search in SortedMatcher (1.6.5)
+   * Adds SetWeight (1.6.5)
+   * Fixes typing error in Python FAR reader (1.6.4)
+   * Removes restriction that Prune argument have commutative weights (1.6.3)
+   * Improves configuration of CompositeWeight readers and writers (1.6.3)
+   * Improves accuracy of ShortestDistance summation (1.6.3)
+   * SetFinal now "moves" its weight argument (1.6.3)
+   * Exposes ArcIterator and EncodeMapper flags in Python (1.6.3)
+   * Properly sets return codes in FST binaries (1.6.3)
+   * Eliminates StringWeight macros (1.6.3)
+   * Finalizes most virtual method overrides (1.6.2)
+   * Fixes missing includes of <fst/log.h> (1.6.1)
+   * Adds float format support to FST drawing (1.6.1)
+   * Extensive modernization for C++11 style (1.6.0)
+   * Many classes and constants moved into an internal namespace (1.6.0)
+   * Adds HashMatcher (1.6.0)
+   * Adds Member method to SymbolTable (1.6.0)
+   * Adds the "special" extension and the fstspecial binary; this is similar to
+     fstconvert but accepts arguments for specifying special labels (phi, rho,
+     and sigma) of FSTs (1.6.0)
+   * Exposes allow_negative_label option for Python symbol tables (1.6.0)
+
+OpenFst: Release 1.5
+   * Added p-subsequential determinization (1.5.0)
+   * Generalized epsilon normalization to non-functional case (1.5.0)
+   * Added general gallic (plus is union) semiring (1.5.0)
+   * Added FST compression extension (1.5.0)
+   * Added Python extension (1.5.0)
+   * Added multiple pushdown transducer (MPDT) support (1.5.0)
+   * Fixed Isomorphic function (1.5.0)
+   * Added final method to matchers (1.5.0)
+   * Fixed various compiler issues (1.5.0)
+   * Fixed missing Isomorphic components (1.5.0)
+   * Added UnionWeight (1.5.0)
+   * Added InputEpsilonMapper and OutputEpsilonMapper arc mappers (1.5.1)
+   * Added TrivialComposeFilter for more efficient composition when one
+     of the arguments is epsilon-free (1.5.1)
+   * Added properties bits kUnweightedCycles and kWeightedCycles (1.5.1)
+   * Added missing const qualification to (1.5.1):
+      - SymbolTableIterator access
+      - EncodeMapper writing to file
+      - EncodeMapper SymbolTable access
+   * Replaced internal custom reference-counting (RefCounter) with
+     C++11 smart pointers where possible, and fixed associated
+     reference-counting bugs (1.5.1)
+   * When calling DeleteStates on a MutableFst with a shared impl, the impl
+     is set to a new empty impl rather than copying and deleting (1.5.1)
+   * Prepended `Pdt` to the Expand libraries and classes in the PDT
+     extension, and prepended `MPdt` to the Expand libraries and classes
+     in the MPDT extension, so that both can be used in the same compilation
+     unit (1.5.1)
+   * Added option to PDT Replace for compiling a strongly-regular RTN into a
+     bounded-stack PDT (1.5.1)
+   * Improved symbol table support for PDT Replace, including automatic
+     generation of parentheses symbols (1.5.1)
+   * Improvements to scripting API (1.5.1):
+      - Added methods for FST access and mutation
+      - Added additional checks for arc/weight compatibility
+      - WeightClass::One and WeightClass::Zero now require a specified weight
+        type at time of construction
+      - Improved VectorFstClass constructors
+      - Added linear-time check for cyclic dependencies in Replace
+      - Added EncodeMapperClass, a template-free box for an EncodeMapper
+   * Improvements to the binaries (1.5.1):
+      - Fixed no-op --precision flag to fstdraw (1.5.1)
+      - Fixed no-op --file_list_input flag to farcreate (1.5.1)
+   * Improvements to the Python extension (1.5.1):
+      - Adds methods for creating an empty mutable FST
+      - Adds methods for FST access via state and arc iteration
+      - Adds FST compilation from arclists (cf. fstcompile)
+      - Adds FST printing and drawing
+      - Adds FarReader and FarWriter classes.
+   * FarReader's GetFst method now returns a pointer (1.5.2)
+   * Fixed FSTERROR macro (1.5.2)
+   * Fixed build flags for dlopen (1.5.2)
+   * Consolidated Python extension into single module (1.5.2)
+   * Python add_arc now takes an Arc object (1.5.2)
+   * Adds optional minimization of non-deterministic FSTs (1.5.3)
+   * Mutation methods of the Python Fst object now support chaining (1.5.3)
+   * Scripting API and Python weight objects now support semiring arithmetic
+     (1.5.3)
+   * Adds RemoveSymbol method to SymbolTable (1.5.4)
+   * Prevents underflow when using LogProbArcSelector in random generation
+     (1.5.4)
+   * Makes random weight generators a single template class (1.5.4)
+   * Makes weight Properties constexpr where possible (1.5.4)
+   * Adds check for error when opening files when compiling strings into FARs
+     (1.5.4)
+   * Adds routines for parsing string flags to the scripting API (1.5.4)
+
+OpenFst: Release 1.4
+   * Port to C++11 (1.4.0)
+   * Disambiguate function added (1.4.0)
+   * Isomorphic function added (1.4.0)
+   * Matcher interface augmented with Priority method.
+   * Special matchers (rho/sigma/phi) can match special symbols
+     on both input FSTs in composition/intersection provided at each
+     state pair they only match one side (1.4.0)
+   * Added ExplicitMatcher to suppress implicit matches (e.g. epsilon
+     self-loops) (1.4.0)
+   * Linear{Tagger,Classifier}Fst extensions added (1.4.0).
+   * Generalized state-reachable to work when input is cyclic (so long as no
+     final state is in a cycle). This ensures label-reachable (and hence label
+     lookahead) works with cyclic input (1.4.0)
+   * Added Condense to build the condensation graph (SCCs condensed to single
+     states) of an FST (1.4.0).
+   * Added an option to Reverse to specify whether a super-initial state
+     should always be created (1.4.0).
+   * Fixed bugs in FirstCacheStore, PowerWeight, and StringCompiler (1.4.0).
+   * Changed SymbolTable to use faster data structure (1.4.0).
+   * Added 'min' disambiguation in determinizaton to keep only the minimum
+     output in a non-functional transducer when plus=min/max
+     (flag --disambiguate_output) (1.4.1)
+   * Compiler issues in linear-fst fixed (1.4.1)
+
+OpenFst: Release 1.3
+   * Support for non-fatal exits on errors: (1.3.1)
+      - Added FLAGS_fst_error_fatal: FST errors are
+        fatal if true (default); o.w. return objects flagged as bad:
+        e.g., FSTs - kError
+        prop. true, FST weights - not a Member().
+      - Added kError property bit signifying bad FST
+      - Added  NoWeight() method to FST weight requirements that returns
+        weight that is not a Member().
+   * Various improvements to the FAR extensions (1.3.1)
+      - a single FST is now a FAR type
+      - FLAGS_initial_symbols: Uses the symbol table from the
+        first FST in the archive for all entries"
+      - Input/output to standard input/output for some FAR and arc types
+   * --with-icu configuration option no longer needed (1.3.1)
+   * Improved flags usage esp. if use SET_FLAGS not SetFlags/InitFst (1.3.2)
+   * Added 'fst' as possible far writer type (1.3.2)
+   * phi matcher can now accept 0 as the phi label (1.3.2)
+   * Added ngram-fst extension (1.3.2)
+   * Improved performance of PDT composition (1.3.3)
+   * Memory-map support (1.3.3)
+   * Fixed cross-FST serialization issues (1.3.3)
+   * Fixed NGramFst off-by-one issue (1.3.3)
+   * farextract now allows one to specify a list of comma-separated keys,
+     including key ranges (1.3.3)
+   * Fixed bug in PDT replace that could cause close paren IDs to collide
+     with open paren IDs (1.3.4)
+
+OpenFst: Release 1.2
+   * Added lookahead matching and filtering for faster composition
+   * Added EditFst for mutation of o.w. immutable FSTs
+   * Added script sub-namespace defining type FstClass, a non-templated
+     Fst<Arc> to hold the arc template type internally. This and FST
+     operations on it allow easier I/O and scripting at the cost of some
+     runtime dispatching.
+   * Added per-arc-iterator control of Fst caching.
+   * Added PowerWeight and Power Arc.
+   * Added SparsePowerWeight and SparsePowerArc (1.2.4)
+   * Added SignedLogWeight and SignedLogArc (1.2.4)
+   * Added ExpectationWeight and ExpectationArc (1.2.4)
+   * Added AStarQueue, PruneQueue and NaturalPruneQueue disciplines (1.2.6)
+   * Added Log64Weight and Log64Arc to FST library throughout, including 
+     support throughout scripts/bins/dsos (1.2.8)
+   * Added delayed RandGenFst that outputs tree of paths weighted
+     by count (1.2.8)
+   * Added fstsymbols shell-level command
+   * Added total weight removal option to pushing
+   * Changed methods for symbol table mutation:
+     use MutableInputSymbols()/MutableOutputSymbols().
+   * Numerous efficiency improvements esp in composition, replace, and caching
+   * Made "fstmap" handle semiring conversion by adding "to_std", "to_log"
+     and "to_log64" as supported 'map_type' arguments (1.2.8).
+   * Made the destructive implementation of RmEpsilon skip over states
+     admitting no non-epsilon incoming transition (1.2.8).
+   * Fixed numerous bugs (1.2 through 1.2.9) including:
+      - improper types of some approximation deltas
+      - sub-optimal hashing functions
+      - issues in internal reuse of shortest distance
+      - hashing bug in FloatWeight
+      - bug in shortest path queue
+      - symbol table checksumming issues
+      - various C++ standards issues
+      - Visit() behavior when visitation aborted
+      - Decode() hash performance bug (1.2.1)
+      - EditFst::Copy(bool) method when the boolean parameter is true (1.2.7)
+      - SymbolTable memory leak in Invert() (1.2.8)
+      - Added escaping of " and \ in labels in fstdraw, needed for dot to
+        function properly (1.2.8)
+      - Fixed handling of final weight of start state in fstpush (1.2.8)
+      - Added FST_LL_FORMAT to fix 64-bit integer printf issues (1.2.9)
+      - Fixed missing <functional> includes (1.2.9)
+      - Fixed reused local variable names (1.2.9)
+      - Fixed passing string by reference in FstDraw args (1.2.9)
+   * Added extensions directories including:
+      - finite-state archive (FAR) utilities,
+        added stlist format supporting writing/reading to/from standard out/in
+        at the library-level (1.2.8)
+      - compact FSTs
+      - lookahead FSTs
+      - pushdown transducers (improved in 1.2.1 through 1.2.7).
+   * Added StateMap/StateMapFst; renamed Map/MapFst to ArcMap/ArcMapFst;
+     map/MapFst retained (but deprecated) (1.2.9)
+   * Deleted ArcSum() and ArcMerge; use StateMap w/ ArcSumMapper and
+     ArcUniqueMapper (1.2.9).
+   * Incremented version of ConstFst/CompactFsts to stop memory alignment
+     that fails on pipes. Made old version raises errors when read on
+     pipes (1.2.9).
+   * Improved determinize hash (1.2.9)
+   * Removed stdio uses (1.2.10)
+   * Fixed library ordering issues esp. with newer GNU build tools (1.2.10)
+
+OpenFst: Release 1.1
+   * Added compat.h to src/include/fst to fix missing defines
+   * Fixed bug in acyclic minimization that led to non-minimal
+     (but equivalent) results
+   * Fixed missing FST typedef in various matchers in matcher.h
+     so that they can be cascaded
+   * Opened file streams binary where appropriate
+
+OpenFst: Release 1.0 (Additions to beta version):
+   * Matcher class added for matching labels at FST states. Includes
+     special matchers for sigma (any), rho ('rest'), and phi ('fail')
+     labels.
+   * Composition generalized with arbitrary filters, matchers, and state
+     tables.
+   * Sequence and matching composition filters provided. (see compose.h,
+     compose-filter.h, matcher.h, state-table.h)
+   * Unique n-best (see shortest-path.h)
+   * Pruning in determinization and epsilon removal (see determinize.h,
+     rmepsilon.h)
+   * New Fst class:
+      - Compact FSTs for space-efficient representation (see compact-fst.h)
+   * New Weight classes:
+      - MinMax
+      - Lexicographic
+   * Miscellaneous bug fixes

cpp/thirdpart/openfst/README

+OpenFst: Release 1.7.2.
+
+OpenFst is a library for constructing, combining, optimizing, and searching
+weighted finite-state transducers (FSTs).
+
+REQUIREMENTS:
+  This version is known to work under Linux using g++ (>= 4.9) and OS X using
+  XCode (>= 5). It is expected to work wherever adequate POSIX (dlopen,
+  ssize_t, basename), C99 (snprintf, strtoll, <stdint.h>), and C++11
+  (<unordered_set>, <unordered_map>, <forward_list>) support is available.
+
+INSTALLATION:
+  Follow the generic GNU build system instructions in ./INSTALL. We
+  recommend configuring with --enable-static=no for faster compiles.
+
+  Optional features:
+
+  --enable-bin             Enable fst::script and executables (def: yes)
+  --enable-compact-fsts    Enable CompactFst extensions (def: no)
+  --enable-compress        Enable compression extension (def: no)
+  --enable-const-fsts      Enable ConstFst extensions (def: no)
+  --enable-far             Enable FAR extensions (def: no)
+  --enable-grm             Enable all dependencies of OpenGrm (def: no)
+  --enable-linear-fsts     Enable LinearTagger/ClassifierFst extensions (def: no)
+  --enable-lookahead-fsts  Enable LookAheadFst extensions (def: no)
+  --enable-mpdt            Enable MPDT extensions (def: no)
+  --enable-ngram-fsts      Enable NGramFst extensions (def: no)
+  --enable-pdt             Enable PDT extensions (def: no)
+  --enable-python          Enable Python extension (def: no)
+  --enable-special         Enable special-matcher extensions (def: no)
+
+  Configuring with --enable-bin=no gives very fast compiles, but excludes the
+  command line utilities.
+
+  Configuring with --enable-python will attempt to install the Python module to
+  whichever site-packages (or dist-packages, on Debian or Ubuntu) is found
+  during configuration.
+
+  The flag --with-libfstdir specifies where FST extensions should be installed;
+  it defaults to ${libdir}/fst.
+
+  Compiling with -Wall -Wno-sign-compare under g++ should give no warnings from
+  this library.
+
+  If you encounter an error about loading shared objects when attempting to use
+  the library immediately after installation, (e.g, `...cannot open shared
+  object file...`) you may need to refresh your system's shared object cache.
+  On Linux, this is accomplished by invoking ldconfig; the corresponding command
+  on OS X is called update_dyld_shared_cache. Both of these require superuser
+  privileges (and so should be executed with sudo).
+
+USAGE:
+  Assuming you've installed under the default /usr/local, the FST binaries are
+  found on /usr/local/bin.
+
+  To use in your own program, include <fst/fstlib.h> and compile with 
+  -I/usr/local/include. The compiler must support C++11 (for g++ add the flag
+  -std=c++11). Link against /usr/local/lib/libfst.so and -ldl. Set your
+  LD_LIBRARY_PATH (or equivalent) to contain /usr/local/lib. The linking is,
+  by default, dynamic so that the Fst and Arc type DSO extensions can be used
+  correctly if desired. Any extensions will be found under /usr/local/lib/fst
+  or /usr/local/include/fst/extensions.
+
+BUILDING WITH BAZEL:
+  As of release 1.7.2 it is possible to build the core library and binaries as
+  well as several extensions with Bazel and to depend on OpenFst as an
+  external dependency in other projects compiled with Bazel. Please refer to
+  https://bazel.build for information on using Bazel. OpenFst can be compiled
+  from anywhere in the source tree, as follows:
+
+  $ bazel build //:all
+
+  Tests can be run in a similar fashion:
+
+  $ bazel test //:all
+
+DOCUMENTATION:
+  See www.openfst.org for general documentation.
+  See ./NEWS for updates since the last release.

cpp/thirdpart/openfst/README.md

+# OpenFST port for Windows
+
+OpenFst is a library for constructing, combining, optimizing, and searching
+weighted finite-state transducers (FSTs), maintained by Google and released
+under the [Apache 2.0 license](./COPYING). The home page for the library is
+located at http://openfst.org/. Check the [original README file](./README)
+for the current version, as we are not updating this file with the current
+release version. Make sure also to check the [NEWS](./NEWS) file for the
+latest changes. This file is part of the original distribution.
+
+## Bugs And Limitations
+
+Refer to [BUGS.md](./BUGS.md) for known issues.
+
+## Releases
+
+We track [original releases](http://www.openfst.org/twiki/bin/view/FST/FstDownload)
+of the library, and try to keep [ours](https://github.com/kkm000/openfst/releases)
+in step. Sometimes we may skip a release, but we strive for that to be rather an
+exception. With each release, we drop a set of pre-built .exe files compiled for
+the x64 architecture and optimized for execution speed. We use the latest
+Microsoft compilers for it, so you may find you need to download and install the
+latest Microsoft C runtime. See [Microsoft KB2977003](
+https://support.microsoft.com/help/2977003/) for instructions.
+
+We do not release pre-built libraries, however, because Microsoft compiler ABI
+changes between versions, and is different for Debug and Release builds. You
+must build a library matching your toolset on your own.
+
+## Build
+
+There are two build options: Visual Studio and CMake. We maintain a set of
+build scripts for both. You will need a recent enough Visual Studio for either
+build flavor. Microsoft provides an option to download the free Visual Studio
+[Community Edition](https://visualstudio.microsoft.com/downloads/), which is
+adequate.
+
+### Visual Studio
+
+Open `openfst.sln`, then read the comments in files under the "READ ME BEFORE
+BUILD" solution folder. Generally, you may just hit Build and get the
+libraries, unless you need fine-tuning, such as selecting a different toolset,
+or want to build with MSBuild from command line. The solutions builds only
+static libraries, with debug information embedded in C7 format for the
+simplicity of use. Set the platform to `x86` or `x64` to build a respective
+32- or 64-bit version of the library and tools.
+
+The `bin` project builds multiple executable files by invoking itself
+recursively once for each executable. All .vcxproj files have been scripted and
+are maintained by hand. It takes a long time to build in Release mode. If you
+only need the libfst library, build it alone from the Project Explorer.
+
+All build outputs are placed into the `build_output` directory under the
+solution root.
+
+### CMake
+
+Follow the normal CMake build procedure to generate build files. With CMake you
+have an option of building dynamic libraries shared by the executables.
+
+## Structure of the repository and tagging
+
+The `original` branch contains only imported original OpenFST files, with one
+exception of .gitignore file added. Tags of the form `orig/1.6.9.1` specify the
+version and revision number of the library. Every commit on the `orignal` branch
+contains the source URL for the tarball release of OpenFST that was committed.
+The last version point corresponds to the revision of OpenFST version. Most (but
+not all) of the versions has had only one revision, and therefore end in `.1`.
+The `winport` branch contains the port, with corresponding tags of the form
+`win/1.6.9.1`.
+
+Bug fix releases are marked with a `+` following a sequential number, for
+example, `win/1.7.2.1+01`
+
+You can review the changes to source code only with the git command e. g.
+
+`git diff orig/1.6.9.1..win/1.6.9.1 -- "*.cc" "*.h"`
+
+The GitHub interface does not provide filtering by extension, so you will see
+all CMakefiles and MSBuild files added, but it may be useful if you want to
+examine changes in a particular file.
+
+We try to keep changes to an absolute minimum. Most of them are due to
+incompatibilities between the gcc and cl compilers, and only a minor portion
+is due to the differences between the Linux and Windows platforms.
+
+## Maintainers
+
+The repository is maintained by [@kkm000](https://github.com/kkm000) and
+[@jtrmal](https://github.com/jtrmal).
+
+Open an issue to let us know if you discover a problem with the port. We react
+to them promptly. Be sure to include a problem description, error text id any,
+and the compiler or Visual Studio version (and CMake version, if you use it).
+Do not hesitate to ask questions. We will try to help you.
+
+Since we do not (by the definition of port) extend the OpenFST library itself,
+please contact its authors with questions and suggestions related to the
+original library. If in doubt, contact both teams.
+
+Also let us know if you have a related development that you believe should be
+linked to from this file.
+
+---
+
+_Copyright (c) 2008-current Google Inc._  
+_Copyright (c) 2016-current SmartAction LLC (kkm)_  
+_Copyright (c) 2016-current Johns Hopkins University (J. Trmal)_

cpp/thirdpart/openfst/_import_release.sh

+#!/bin/bash
+
+# This is a port port maintainer's file, and is not part of OpenFST.
+# Licensed under the same Apache 2.0 license (see the file COPYING),
+# or just delete it if in legal doubt; you do not need it anyway.
+# Copyright 2019 SmartAction LLC.
+
+set -euo pipefail; shopt -s extglob
+
+LF=$'\n'
+
+say() { echo >&2 "$0: $@"; }
+die() { echo >&2 "$0: error: $@"; exit 1; }
+
+# This is Spar^H^H Windooows!
+miss=(); for tool in gawk git grep gzip tar wget; do
+  command -v $tool >/dev/null || miss+=($tool)
+done
+test ${#miss[@]} -eq 0 || die "missing required program(s): ${miss[@]}"
+unset miss
+
+[[ "$#" == [12] ]] || { 
+  echo >&2 -e "Usage: $0 <version> [<revision>=1]${LF} e.g.: $0 1.7.0 1"
+  exit 2; }
+
+ver=$1
+rev=${2:-1}
+tag="orig/$ver.$rev"
+url="http://www.openfst.org/twiki/bin/viewfile/FST/FstDownload?filename=openfst-${ver}.tar.gz;rev=${rev}"
+
+grep -qP '^1(\.1?\d){3}$' <<<"$ver.$rev" ||
+  die "revision $ver.$rev does not look correct to me"
+
+pfx="$(git rev-parse --show-prefix)" && test -z "$pfx" ||
+  die "must be in the root of the work tree"
+
+# Must be on the 'original' branch, in sync with the main repo,
+# and with no local changes, although we can ignore deletions,
+# since we are deleting files before import anyway. We must be
+# squeaky clean, lest stray random files be added. Also, ignore
+# changes to this file to allow for debugging.
+git fetch origin
+git status --porcelain=2 --branch | gawk -v me=$0 >&2 '
+  $0 == "# branch.head original" { branch_ok = 1 }
+  $1$2 == "#branch.ab"           { ab_bad = $4 != "-0" }
+  $1 == "#" { next }
+  $1$2 == "1.D" { next }  # Deleted files are fine.
+  $1$9 == "1_import_release.sh" { next }
+  { modf_bad=1; nextfile }
+  END {
+    me = me ": error: "
+    if (!branch_ok) print me "current branch must be \"original\""
+    if (ab_bad) print me "current branch is not in sync with remote"
+    if (modf_bad) print me "there are locally modified files"
+    exit !(branch_ok && !ab_bad && !modf_bad) }'
+
+git rev-parse -q --verify "refs/tags/$tag" >/dev/null &&
+  die "tag $tag already exists"
+
+say "Removing (almost) all files from worktree"
+rm -rf -- !(.|..|.git|.gitignore|_import_release.sh)
+
+say "Fetching and unpacking OpenFST v$ver r$rev${LF} ... from: $url"
+wget -nv -O - -- "$url" | tar -xzf - --strip-components=1
+
+test -f NEWS ||
+  die "file NEWS was not unpacked. Something went horribly wrong."
+
+message="Import v$ver r$rev${LF}${LF}$url"
+
+say "committing and tagging new version"
+git add -A
+git commit -m "$message"
+git tag -a "$tag" -m "$message"
+
+say "summary of changes to the previous version, and a NEWS snippet"
+
+git --no-pager show --stat
+echo
+git --no-pager show --format='' --unified=1 -w -- NEWS
+echo
+
+say "tag ${tag} created for the imported version. Import complete."

cpp/thirdpart/openfst/_package_release.cmd

+@echo off
+setlocal enableextensions
+
+:: Locate winrar.exe
+set winrar="%ProgramFiles%\winrar\winrar.exe"
+if not exist %winrar% set winrar="%ProgramFiles(x86)%\winrar\winrar.exe"
+if not exist %winrar% (
+  echo ERROR: Cannot find winrar.exe 1>&2
+  exit /b 1
+)
+
+:: Get head tag and make sure it is sane.
+for /f %%i in ('git describe --long --dirty') do set longtag=%%i
+set insane=0
+if not %longtag:-dirty=%.==%longtag%. set insane=1
+if %longtag:-0-g=%.==%longtag%.       set insane=1
+if %longtag:win/=%.==%longtag%.       set insane=1
+if %insane%==1 (
+    echo ERROR: Best HEAD description '%longtag%' is not at a clean tag on winport branch 1>&2
+    exit /b 1
+)
+
+:: Get short description now, strip "win/" for version only
+for /f %%i in ('git describe') do set tag=%%i
+set tag=%tag:win/=%
+
+:: Create archive with a comment
+set cmtfile=%TEMP%\openfst-package-comment.txt
+del /q %cmtfile% 2>nul
+echo OpenFST binaries for Windows x64, optimized build.  >>%cmtfile%
+echo Copyright 2005-2019 Google, Inc. (Original source). >>%cmtfile%
+echo Copyright 2016-2019 SmartAction LLC (Windows port). >>%cmtfile%
+echo Copyright 2016-2019 Johns Hopkins Uni (Windows port). >>%cmtfile%
+echo.>>%cmtfile%
+echo OpenFST home page: http://www.openfst.org/         >>%cmtfile%
+echo Git Repository: https://github.com/kkm000/openfst/ >>%cmtfile%
+echo Build tag: %longtag%                               >>%cmtfile%
+
+set zipfile=openfst-bin-win-x64-%tag%.zip
+del /q %zipfile% 2>nul
+%winrar% a -ep -m5 -z%cmtfile% %zipfile% NEWS COPYING build_output\x64\Release\bin\*.exe
+if errorlevel 1 (
+  echo "ERROR: Cannot create archive '%zipfile%' 1>&2
+  del /q %cmtfile% 2>nul
+  exit /b 1
+)
+
+echo SUCCESS: Created archive '%zipfile%' 1>&2
+del /q %cmtfile% 2>nul
+exit /b 0

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+# 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.
+
+# 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
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+#
+# The reason of the latter failure is that $top_srcdir and $ac_aux_dir
+# are both prefixed by $srcdir.  In an in-source build this is usually
+# harmless because $srcdir is '.', but things will broke when you
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+#
+# So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
+# iff we strip the leading $srcdir from $ac_aux_dir.  That would be:
+#   am_aux_dir='\$(top_srcdir)/'`expr "$ac_aux_dir" : "$srcdir//*\(.*\)"`
+# and then we would define $MISSING as
+#   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],
+[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
+# Expand $ac_aux_dir to an absolute path.
+am_aux_dir=`cd "$ac_aux_dir" && pwd`
+])
+
+# AM_CONDITIONAL                                            -*- Autoconf -*-
+
+# Copyright (C) 1997-2017 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.
+
+# AM_CONDITIONAL(NAME, SHELL-CONDITION)
+# -------------------------------------
+# Define a conditional.
+AC_DEFUN([AM_CONDITIONAL],
+[AC_PREREQ([2.52])dnl
+ m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
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+_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=
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+  $1_TRUE='#'
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+AC_CONFIG_COMMANDS_PRE(
+[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
+  AC_MSG_ERROR([[conditional "$1" was never defined.
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+fi])])
+
+# Copyright (C) 1999-2017 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.
+
+
+# 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", "OBJC", "OBJCXX", "UPC", or "GJC".
+# 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,
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+AC_DEFUN([_AM_DEPENDENCIES],
+[AC_REQUIRE([AM_SET_DEPDIR])dnl
+AC_REQUIRE([AM_OUTPUT_DEPENDENCY_COMMANDS])dnl
+AC_REQUIRE([AM_MAKE_INCLUDE])dnl
+AC_REQUIRE([AM_DEP_TRACK])dnl
+
+m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
+      [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
+      [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
+      [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
+      [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
+      [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
+                    [depcc="$$1"   am_compiler_list=])
+
+AC_CACHE_CHECK([dependency style of $depcc],
+               [am_cv_$1_dependencies_compiler_type],
+[if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
+  # We make a subdir and do the tests there.  Otherwise we can end up
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+  # instance it was reported that on HP-UX the gcc test will end up
+  # making a dummy file named 'D' -- because '-MD' means "put the output
+  # in D".
+  rm -rf conftest.dir
+  mkdir conftest.dir
+  # Copy depcomp to subdir because otherwise we won't find it if we're
+  # using a relative directory.
+  cp "$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
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+  # the current directory while Tru64 will put them in the object
+  # directory.
+  mkdir sub
+
+  am_cv_$1_dependencies_compiler_type=none
+  if test "$am_compiler_list" = ""; then
+     am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
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+  am__universal=false
+  m4_case([$1], [CC],
+    [case " $depcc " in #(
+     *\ -arch\ *\ -arch\ *) am__universal=true ;;
+     esac],
+    [CXX],
+    [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
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+    #
+    # 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 10 /bin/sh.
+      echo '/* dummy */' > 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
+    fi
+  done
+
+  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])
+AM_CONDITIONAL([am__fastdep$1], [
+  test "x$enable_dependency_tracking" != xno \
+  && test "$am_cv_$1_dependencies_compiler_type" = gcc3])
+])
+
+
+# AM_SET_DEPDIR
+# -------------
+# Choose a directory name for dependency files.
+# This macro is AC_REQUIREd in _AM_DEPENDENCIES.
+AC_DEFUN([AM_SET_DEPDIR],
+[AC_REQUIRE([AM_SET_LEADING_DOT])dnl
+AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
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+
+
+# AM_DEP_TRACK
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+[AC_ARG_ENABLE([dependency-tracking], [dnl
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+  [--enable-dependency-tracking],
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+AS_HELP_STRING(
+  [--disable-dependency-tracking],
+  [speeds up one-time build])])
+if test "x$enable_dependency_tracking" != xno; then
+  am_depcomp="$ac_aux_dir/depcomp"
+  AMDEPBACKSLASH='\'
+  am__nodep='_no'
+fi
+AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
+AC_SUBST([AMDEPBACKSLASH])dnl
+_AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
+AC_SUBST([am__nodep])dnl
+_AM_SUBST_NOTMAKE([am__nodep])dnl
+])
+
+# Generate code to set up dependency tracking.              -*- Autoconf -*-
+
+# Copyright (C) 1999-2017 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.
+
+
+# _AM_OUTPUT_DEPENDENCY_COMMANDS
+# ------------------------------
+AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
+[{
+  # Older Autoconf quotes --file arguments for eval, but not when files
+  # are listed without --file.  Let's play safe and only enable the eval
+  # 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"`
+    # 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'`; 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
+# is enabled.  FIXME.  This creates each '.P' file that we will
+# 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="$ac_aux_dir"])
+])
+
+# Do all the work for Automake.                             -*- Autoconf -*-
+
+# Copyright (C) 1996-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This macro actually does too much.  Some checks are only needed if
+# your package does certain things.  But this isn't really a big deal.
+
+dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
+m4_define([AC_PROG_CC],
+m4_defn([AC_PROG_CC])
+[_AM_PROG_CC_C_O
+])
+
+# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
+# AM_INIT_AUTOMAKE([OPTIONS])
+# -----------------------------------------------
+# The call with PACKAGE and VERSION arguments is the old style
+# call (pre autoconf-2.50), which is being phased out.  PACKAGE
+# and VERSION should now be passed to AC_INIT and removed from
+# the call to AM_INIT_AUTOMAKE.
+# We support both call styles for the transition.  After
+# the next Automake release, Autoconf can make the AC_INIT
+# arguments mandatory, and then we can depend on a new Autoconf
+# release and drop the old call support.
+AC_DEFUN([AM_INIT_AUTOMAKE],
+[AC_PREREQ([2.65])dnl
+dnl Autoconf wants to disallow AM_ names.  We explicitly allow
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+m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
+AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
+AC_REQUIRE([AC_PROG_INSTALL])dnl
+if test "`cd $srcdir && pwd`" != "`pwd`"; then
+  # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
+  # is not polluted with repeated "-I."
+  AC_SUBST([am__isrc], [' -I$(srcdir)'])_AM_SUBST_NOTMAKE([am__isrc])dnl
+  # test to see if srcdir already configured
+  if test -f $srcdir/config.status; then
+    AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
+  fi
+fi
+
+# test whether we have cygpath
+if test -z "$CYGPATH_W"; then
+  if (cygpath --version) >/dev/null 2>/dev/null; then
+    CYGPATH_W='cygpath -w'
+  else
+    CYGPATH_W=echo
+  fi
+fi
+AC_SUBST([CYGPATH_W])
+
+# Define the identity of the package.
+dnl Distinguish between old-style and new-style calls.
+m4_ifval([$2],
+[AC_DIAGNOSE([obsolete],
+             [$0: two- and three-arguments forms are deprecated.])
+m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
+ AC_SUBST([PACKAGE], [$1])dnl
+ AC_SUBST([VERSION], [$2])],
+[_AM_SET_OPTIONS([$1])dnl
+dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
+m4_if(
+  m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
+  [ok:ok],,
+  [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
+ AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
+ AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
+
+_AM_IF_OPTION([no-define],,
+[AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
+ AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
+
+# Some tools Automake needs.
+AC_REQUIRE([AM_SANITY_CHECK])dnl
+AC_REQUIRE([AC_ARG_PROGRAM])dnl
+AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
+AM_MISSING_PROG([AUTOCONF], [autoconf])
+AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
+AM_MISSING_PROG([AUTOHEADER], [autoheader])
+AM_MISSING_PROG([MAKEINFO], [makeinfo])
+AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
+AC_REQUIRE([AC_PROG_MKDIR_P])dnl
+# For better backward compatibility.  To be removed once Automake 1.9.x
+# dies out for good.  For more background, see:
+# <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
+# <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
+AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
+# We need awk for the "check" target (and possibly the TAP driver).  The
+# system "awk" is bad on some platforms.
+AC_REQUIRE([AC_PROG_AWK])dnl
+AC_REQUIRE([AC_PROG_MAKE_SET])dnl
+AC_REQUIRE([AM_SET_LEADING_DOT])dnl
+_AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
+	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
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+_AM_IF_OPTION([no-dependencies],,
+[AC_PROVIDE_IFELSE([AC_PROG_CC],
+		  [_AM_DEPENDENCIES([CC])],
+		  [m4_define([AC_PROG_CC],
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+AC_PROVIDE_IFELSE([AC_PROG_CXX],
+		  [_AM_DEPENDENCIES([CXX])],
+		  [m4_define([AC_PROG_CXX],
+			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
+AC_PROVIDE_IFELSE([AC_PROG_OBJC],
+		  [_AM_DEPENDENCIES([OBJC])],
+		  [m4_define([AC_PROG_OBJC],
+			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
+AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
+		  [_AM_DEPENDENCIES([OBJCXX])],
+		  [m4_define([AC_PROG_OBJCXX],
+			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
+])
+AC_REQUIRE([AM_SILENT_RULES])dnl
+dnl The testsuite driver may need to know about EXEEXT, so add the
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+dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
+AC_CONFIG_COMMANDS_PRE(dnl
+[m4_provide_if([_AM_COMPILER_EXEEXT],
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+# POSIX will say in a future version that running "rm -f" with no argument
+# is OK; and we want to be able to make that assumption in our Makefile
+# recipes.  So use an aggressive probe to check that the usage we want is
+# actually supported "in the wild" to an acceptable degree.
+# See automake bug#10828.
+# To make any issue more visible, cause the running configure to be aborted
+# by default if the 'rm' program in use doesn't match our expectations; the
+# user can still override this though.
+if rm -f && rm -fr && rm -rf; then : OK; else
+  cat >&2 <<'END'
+Oops!
+
+Your 'rm' program seems unable to run without file operands specified
+on the command line, even when the '-f' option is present.  This is contrary
+to the behaviour of most rm programs out there, and not conforming with
+the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
+
+Please tell bug-automake@gnu.org about your system, including the value
+of your $PATH and any error possibly output before this message.  This
+can help us improve future automake versions.
+
+END
+  if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
+    echo 'Configuration will proceed anyway, since you have set the' >&2
+    echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
+    echo >&2
+  else
+    cat >&2 <<'END'
+Aborting the configuration process, to ensure you take notice of the issue.
+
+You can download and install GNU coreutils to get an 'rm' implementation
+that behaves properly: <http://www.gnu.org/software/coreutils/>.
+
+If you want to complete the configuration process using your problematic
+'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
+to "yes", and re-run configure.
+
+END
+    AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
+  fi
+fi
+dnl The trailing newline in this macro's definition is deliberate, for
+dnl backward compatibility and to allow trailing 'dnl'-style comments
+dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
+])
+
+dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
+dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
+dnl mangled by Autoconf and run in a shell conditional statement.
+m4_define([_AC_COMPILER_EXEEXT],
+m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
+
+# When config.status generates a header, we must update the stamp-h file.
+# This file resides in the same directory as the config header
+# that is generated.  The stamp files are numbered to have different names.
+
+# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
+# loop where config.status creates the headers, so we can generate
+# our stamp files there.
+AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
+[# Compute $1's index in $config_headers.
+_am_arg=$1
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+  case $_am_header in
+    $_am_arg | $_am_arg:* )
+      break ;;
+    * )
+      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+  esac
+done
+echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
+
+# Copyright (C) 2001-2017 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.
+
+# AM_PROG_INSTALL_SH
+# ------------------
+# Define $install_sh.
+AC_DEFUN([AM_PROG_INSTALL_SH],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+if test x"${install_sh+set}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+  *)
+    install_sh="\${SHELL} $am_aux_dir/install-sh"
+  esac
+fi
+AC_SUBST([install_sh])])
+
+# Copyright (C) 2003-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# Check whether the underlying file-system supports filenames
+# with a leading dot.  For instance MS-DOS doesn't.
+AC_DEFUN([AM_SET_LEADING_DOT],
+[rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+  am__leading_dot=.
+else
+  am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+AC_SUBST([am__leading_dot])])
+
+# Check to see how 'make' treats includes.	            -*- Autoconf -*-
+
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_MAKE_INCLUDE()
+# -----------------
+# Check to see how make treats includes.
+AC_DEFUN([AM_MAKE_INCLUDE],
+[am_make=${MAKE-make}
+cat > confinc << 'END'
+am__doit:
+	@echo this is the am__doit target
+.PHONY: am__doit
+END
+# If we don't find an include directive, just comment out the code.
+AC_MSG_CHECKING([for style of include used by $am_make])
+am__include="#"
+am__quote=
+_am_result=none
+# First try GNU make style include.
+echo "include confinc" > confmf
+# Ignore all kinds of additional output from 'make'.
+case `$am_make -s -f confmf 2> /dev/null` in #(
+*the\ am__doit\ target*)
+  am__include=include
+  am__quote=
+  _am_result=GNU
+  ;;
+esac
+# Now try BSD make style include.
+if test "$am__include" = "#"; then
+   echo '.include "confinc"' > confmf
+   case `$am_make -s -f confmf 2> /dev/null` in #(
+   *the\ am__doit\ target*)
+     am__include=.include
+     am__quote="\""
+     _am_result=BSD
+     ;;
+   esac
+fi
+AC_SUBST([am__include])
+AC_SUBST([am__quote])
+AC_MSG_RESULT([$_am_result])
+rm -f confinc confmf
+])
+
+# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
+
+# Copyright (C) 1997-2017 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.
+
+# AM_MISSING_PROG(NAME, PROGRAM)
+# ------------------------------
+AC_DEFUN([AM_MISSING_PROG],
+[AC_REQUIRE([AM_MISSING_HAS_RUN])
+$1=${$1-"${am_missing_run}$2"}
+AC_SUBST($1)])
+
+# AM_MISSING_HAS_RUN
+# ------------------
+# Define MISSING if not defined so far and test if it is modern enough.
+# If it is, set am_missing_run to use it, otherwise, to nothing.
+AC_DEFUN([AM_MISSING_HAS_RUN],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+AC_REQUIRE_AUX_FILE([missing])dnl
+if test x"${MISSING+set}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
+  *)
+    MISSING="\${SHELL} $am_aux_dir/missing" ;;
+  esac
+fi
+# Use eval to expand $SHELL
+if eval "$MISSING --is-lightweight"; then
+  am_missing_run="$MISSING "
+else
+  am_missing_run=
+  AC_MSG_WARN(['missing' script is too old or missing])
+fi
+])
+
+# Helper functions for option handling.                     -*- Autoconf -*-
+
+# Copyright (C) 2001-2017 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.
+
+# _AM_MANGLE_OPTION(NAME)
+# -----------------------
+AC_DEFUN([_AM_MANGLE_OPTION],
+[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
+
+# _AM_SET_OPTION(NAME)
+# --------------------
+# Set option NAME.  Presently that only means defining a flag for this option.
+AC_DEFUN([_AM_SET_OPTION],
+[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
+
+# _AM_SET_OPTIONS(OPTIONS)
+# ------------------------
+# OPTIONS is a space-separated list of Automake options.
+AC_DEFUN([_AM_SET_OPTIONS],
+[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
+
+# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
+# -------------------------------------------
+# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
+AC_DEFUN([_AM_IF_OPTION],
+[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
+
+# Copyright (C) 1999-2017 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.
+
+# _AM_PROG_CC_C_O
+# ---------------
+# Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
+# to automatically call this.
+AC_DEFUN([_AM_PROG_CC_C_O],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+AC_REQUIRE_AUX_FILE([compile])dnl
+AC_LANG_PUSH([C])dnl
+AC_CACHE_CHECK(
+  [whether $CC understands -c and -o together],
+  [am_cv_prog_cc_c_o],
+  [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
+  # Make sure it works both with $CC and with simple cc.
+  # Following AC_PROG_CC_C_O, we do the test twice because some
+  # compilers refuse to overwrite an existing .o file with -o,
+  # though they will create one.
+  am_cv_prog_cc_c_o=yes
+  for am_i in 1 2; do
+    if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
+         && test -f conftest2.$ac_objext; then
+      : OK
+    else
+      am_cv_prog_cc_c_o=no
+      break
+    fi
+  done
+  rm -f core conftest*
+  unset am_i])
+if test "$am_cv_prog_cc_c_o" != yes; then
+   # Losing compiler, so override with the script.
+   # FIXME: It is wrong to rewrite CC.
+   # But if we don't then we get into trouble of one sort or another.
+   # A longer-term fix would be to have automake use am__CC in this case,
+   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
+   CC="$am_aux_dir/compile $CC"
+fi
+AC_LANG_POP([C])])
+
+# For backward compatibility.
+AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
+
+# Copyright (C) 1999-2017 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.
+
+
+# AM_PATH_PYTHON([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+# ---------------------------------------------------------------------------
+# Adds support for distributing Python modules and packages.  To
+# install modules, copy them to $(pythondir), using the python_PYTHON
+# automake variable.  To install a package with the same name as the
+# automake package, install to $(pkgpythondir), or use the
+# pkgpython_PYTHON automake variable.
+#
+# The variables $(pyexecdir) and $(pkgpyexecdir) are provided as
+# locations to install python extension modules (shared libraries).
+# Another macro is required to find the appropriate flags to compile
+# extension modules.
+#
+# If your package is configured with a different prefix to python,
+# users will have to add the install directory to the PYTHONPATH
+# environment variable, or create a .pth file (see the python
+# documentation for details).
+#
+# If the MINIMUM-VERSION argument is passed, AM_PATH_PYTHON will
+# cause an error if the version of python installed on the system
+# doesn't meet the requirement.  MINIMUM-VERSION should consist of
+# numbers and dots only.
+AC_DEFUN([AM_PATH_PYTHON],
+ [
+  dnl Find a Python interpreter.  Python versions prior to 2.0 are not
+  dnl supported. (2.0 was released on October 16, 2000).
+  dnl FIXME: Remove the need to hard-code Python versions here.
+  m4_define_default([_AM_PYTHON_INTERPRETER_LIST],
+[python python2 python3 python3.8 python3.7 python3.6 python3.5 python3.4 python3.3 python3.2 python3.1 python3.0 python2.7 dnl
+ python2.6 python2.5 python2.4 python2.3 python2.2 python2.1 python2.0])
+
+  AC_ARG_VAR([PYTHON], [the Python interpreter])
+
+  m4_if([$1],[],[
+    dnl No version check is needed.
+    # Find any Python interpreter.
+    if test -z "$PYTHON"; then
+      AC_PATH_PROGS([PYTHON], _AM_PYTHON_INTERPRETER_LIST, :)
+    fi
+    am_display_PYTHON=python
+  ], [
+    dnl A version check is needed.
+    if test -n "$PYTHON"; then
+      # If the user set $PYTHON, use it and don't search something else.
+      AC_MSG_CHECKING([whether $PYTHON version is >= $1])
+      AM_PYTHON_CHECK_VERSION([$PYTHON], [$1],
+			      [AC_MSG_RESULT([yes])],
+			      [AC_MSG_RESULT([no])
+			       AC_MSG_ERROR([Python interpreter is too old])])
+      am_display_PYTHON=$PYTHON
+    else
+      # Otherwise, try each interpreter until we find one that satisfies
+      # VERSION.
+      AC_CACHE_CHECK([for a Python interpreter with version >= $1],
+	[am_cv_pathless_PYTHON],[
+	for am_cv_pathless_PYTHON in _AM_PYTHON_INTERPRETER_LIST none; do
+	  test "$am_cv_pathless_PYTHON" = none && break
+	  AM_PYTHON_CHECK_VERSION([$am_cv_pathless_PYTHON], [$1], [break])
+	done])
+      # Set $PYTHON to the absolute path of $am_cv_pathless_PYTHON.
+      if test "$am_cv_pathless_PYTHON" = none; then
+	PYTHON=:
+      else
+        AC_PATH_PROG([PYTHON], [$am_cv_pathless_PYTHON])
+      fi
+      am_display_PYTHON=$am_cv_pathless_PYTHON
+    fi
+  ])
+
+  if test "$PYTHON" = :; then
+  dnl Run any user-specified action, or abort.
+    m4_default([$3], [AC_MSG_ERROR([no suitable Python interpreter found])])
+  else
+
+  dnl Query Python for its version number.  Getting [:3] seems to be
+  dnl the best way to do this; it's what "site.py" does in the standard
+  dnl library.
+
+  AC_CACHE_CHECK([for $am_display_PYTHON version], [am_cv_python_version],
+    [am_cv_python_version=`$PYTHON -c "import sys; sys.stdout.write(sys.version[[:3]])"`])
+  AC_SUBST([PYTHON_VERSION], [$am_cv_python_version])
+
+  dnl Use the values of $prefix and $exec_prefix for the corresponding
+  dnl values of PYTHON_PREFIX and PYTHON_EXEC_PREFIX.  These are made
+  dnl distinct variables so they can be overridden if need be.  However,
+  dnl general consensus is that you shouldn't need this ability.
+
+  AC_SUBST([PYTHON_PREFIX], ['${prefix}'])
+  AC_SUBST([PYTHON_EXEC_PREFIX], ['${exec_prefix}'])
+
+  dnl At times (like when building shared libraries) you may want
+  dnl to know which OS platform Python thinks this is.
+
+  AC_CACHE_CHECK([for $am_display_PYTHON platform], [am_cv_python_platform],
+    [am_cv_python_platform=`$PYTHON -c "import sys; sys.stdout.write(sys.platform)"`])
+  AC_SUBST([PYTHON_PLATFORM], [$am_cv_python_platform])
+
+  # Just factor out some code duplication.
+  am_python_setup_sysconfig="\
+import sys
+# Prefer sysconfig over distutils.sysconfig, for better compatibility
+# with python 3.x.  See automake bug#10227.
+try:
+    import sysconfig
+except ImportError:
+    can_use_sysconfig = 0
+else:
+    can_use_sysconfig = 1
+# Can't use sysconfig in CPython 2.7, since it's broken in virtualenvs:
+# <https://github.com/pypa/virtualenv/issues/118>
+try:
+    from platform import python_implementation
+    if python_implementation() == 'CPython' and sys.version[[:3]] == '2.7':
+        can_use_sysconfig = 0
+except ImportError:
+    pass"
+
+  dnl Set up 4 directories:
+
+  dnl pythondir -- where to install python scripts.  This is the
+  dnl   site-packages directory, not the python standard library
+  dnl   directory like in previous automake betas.  This behavior
+  dnl   is more consistent with lispdir.m4 for example.
+  dnl Query distutils for this directory.
+  AC_CACHE_CHECK([for $am_display_PYTHON script directory],
+    [am_cv_python_pythondir],
+    [if test "x$prefix" = xNONE
+     then
+       am_py_prefix=$ac_default_prefix
+     else
+       am_py_prefix=$prefix
+     fi
+     am_cv_python_pythondir=`$PYTHON -c "
+$am_python_setup_sysconfig
+if can_use_sysconfig:
+    sitedir = sysconfig.get_path('purelib', vars={'base':'$am_py_prefix'})
+else:
+    from distutils import sysconfig
+    sitedir = sysconfig.get_python_lib(0, 0, prefix='$am_py_prefix')
+sys.stdout.write(sitedir)"`
+     case $am_cv_python_pythondir in
+     $am_py_prefix*)
+       am__strip_prefix=`echo "$am_py_prefix" | sed 's|.|.|g'`
+       am_cv_python_pythondir=`echo "$am_cv_python_pythondir" | sed "s,^$am__strip_prefix,$PYTHON_PREFIX,"`
+       ;;
+     *)
+       case $am_py_prefix in
+         /usr|/System*) ;;
+         *)
+	  am_cv_python_pythondir=$PYTHON_PREFIX/lib/python$PYTHON_VERSION/site-packages
+	  ;;
+       esac
+       ;;
+     esac
+    ])
+  AC_SUBST([pythondir], [$am_cv_python_pythondir])
+
+  dnl pkgpythondir -- $PACKAGE directory under pythondir.  Was
+  dnl   PYTHON_SITE_PACKAGE in previous betas, but this naming is
+  dnl   more consistent with the rest of automake.
+
+  AC_SUBST([pkgpythondir], [\${pythondir}/$PACKAGE])
+
+  dnl pyexecdir -- directory for installing python extension modules
+  dnl   (shared libraries)
+  dnl Query distutils for this directory.
+  AC_CACHE_CHECK([for $am_display_PYTHON extension module directory],
+    [am_cv_python_pyexecdir],
+    [if test "x$exec_prefix" = xNONE
+     then
+       am_py_exec_prefix=$am_py_prefix
+     else
+       am_py_exec_prefix=$exec_prefix
+     fi
+     am_cv_python_pyexecdir=`$PYTHON -c "
+$am_python_setup_sysconfig
+if can_use_sysconfig:
+    sitedir = sysconfig.get_path('platlib', vars={'platbase':'$am_py_prefix'})
+else:
+    from distutils import sysconfig
+    sitedir = sysconfig.get_python_lib(1, 0, prefix='$am_py_prefix')
+sys.stdout.write(sitedir)"`
+     case $am_cv_python_pyexecdir in
+     $am_py_exec_prefix*)
+       am__strip_prefix=`echo "$am_py_exec_prefix" | sed 's|.|.|g'`
+       am_cv_python_pyexecdir=`echo "$am_cv_python_pyexecdir" | sed "s,^$am__strip_prefix,$PYTHON_EXEC_PREFIX,"`
+       ;;
+     *)
+       case $am_py_exec_prefix in
+         /usr|/System*) ;;
+         *)
+	   am_cv_python_pyexecdir=$PYTHON_EXEC_PREFIX/lib/python$PYTHON_VERSION/site-packages
+	   ;;
+       esac
+       ;;
+     esac
+    ])
+  AC_SUBST([pyexecdir], [$am_cv_python_pyexecdir])
+
+  dnl pkgpyexecdir -- $(pyexecdir)/$(PACKAGE)
+
+  AC_SUBST([pkgpyexecdir], [\${pyexecdir}/$PACKAGE])
+
+  dnl Run any user-specified action.
+  $2
+  fi
+
+])
+
+
+# AM_PYTHON_CHECK_VERSION(PROG, VERSION, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
+# ---------------------------------------------------------------------------
+# Run ACTION-IF-TRUE if the Python interpreter PROG has version >= VERSION.
+# Run ACTION-IF-FALSE otherwise.
+# This test uses sys.hexversion instead of the string equivalent (first
+# word of sys.version), in order to cope with versions such as 2.2c1.
+# This supports Python 2.0 or higher. (2.0 was released on October 16, 2000).
+AC_DEFUN([AM_PYTHON_CHECK_VERSION],
+ [prog="import sys
+# split strings by '.' and convert to numeric.  Append some zeros
+# because we need at least 4 digits for the hex conversion.
+# map returns an iterator in Python 3.0 and a list in 2.x
+minver = list(map(int, '$2'.split('.'))) + [[0, 0, 0]]
+minverhex = 0
+# xrange is not present in Python 3.0 and range returns an iterator
+for i in list(range(0, 4)): minverhex = (minverhex << 8) + minver[[i]]
+sys.exit(sys.hexversion < minverhex)"
+  AS_IF([AM_RUN_LOG([$1 -c "$prog"])], [$3], [$4])])
+
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_RUN_LOG(COMMAND)
+# -------------------
+# Run COMMAND, save the exit status in ac_status, and log it.
+# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
+AC_DEFUN([AM_RUN_LOG],
+[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
+   ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+   (exit $ac_status); }])
+
+# Check to make sure that the build environment is sane.    -*- Autoconf -*-
+
+# Copyright (C) 1996-2017 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.
+
+# AM_SANITY_CHECK
+# ---------------
+AC_DEFUN([AM_SANITY_CHECK],
+[AC_MSG_CHECKING([whether build environment is sane])
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name.  Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+  *[[\\\"\#\$\&\'\`$am_lf]]*)
+    AC_MSG_ERROR([unsafe absolute working directory name]);;
+esac
+case $srcdir in
+  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
+    AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
+esac
+
+# Do 'set' in a subshell so we don't clobber the current shell's
+# arguments.  Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+   am_has_slept=no
+   for am_try in 1 2; do
+     echo "timestamp, slept: $am_has_slept" > conftest.file
+     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+     if test "$[*]" = "X"; then
+	# -L didn't work.
+	set X `ls -t "$srcdir/configure" conftest.file`
+     fi
+     if test "$[*]" != "X $srcdir/configure conftest.file" \
+	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
+
+	# If neither matched, then we have a broken ls.  This can happen
+	# if, for instance, CONFIG_SHELL is bash and it inherits a
+	# broken ls alias from the environment.  This has actually
+	# happened.  Such a system could not be considered "sane".
+	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
+  alias in your environment])
+     fi
+     if test "$[2]" = conftest.file || test $am_try -eq 2; then
+       break
+     fi
+     # Just in case.
+     sleep 1
+     am_has_slept=yes
+   done
+   test "$[2]" = conftest.file
+   )
+then
+   # Ok.
+   :
+else
+   AC_MSG_ERROR([newly created file is older than distributed files!
+Check your system clock])
+fi
+AC_MSG_RESULT([yes])
+# If we didn't sleep, we still need to ensure time stamps of config.status and
+# generated files are strictly newer.
+am_sleep_pid=
+if grep 'slept: no' conftest.file >/dev/null 2>&1; then
+  ( sleep 1 ) &
+  am_sleep_pid=$!
+fi
+AC_CONFIG_COMMANDS_PRE(
+  [AC_MSG_CHECKING([that generated files are newer than configure])
+   if test -n "$am_sleep_pid"; then
+     # Hide warnings about reused PIDs.
+     wait $am_sleep_pid 2>/dev/null
+   fi
+   AC_MSG_RESULT([done])])
+rm -f conftest.file
+])
+
+# Copyright (C) 2009-2017 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.
+
+# AM_SILENT_RULES([DEFAULT])
+# --------------------------
+# Enable less verbose build rules; with the default set to DEFAULT
+# ("yes" being less verbose, "no" or empty being verbose).
+AC_DEFUN([AM_SILENT_RULES],
+[AC_ARG_ENABLE([silent-rules], [dnl
+AS_HELP_STRING(
+  [--enable-silent-rules],
+  [less verbose build output (undo: "make V=1")])
+AS_HELP_STRING(
+  [--disable-silent-rules],
+  [verbose build output (undo: "make V=0")])dnl
+])
+case $enable_silent_rules in @%:@ (((
+  yes) AM_DEFAULT_VERBOSITY=0;;
+   no) AM_DEFAULT_VERBOSITY=1;;
+    *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
+esac
+dnl
+dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
+dnl do not support nested variable expansions.
+dnl See automake bug#9928 and bug#10237.
+am_make=${MAKE-make}
+AC_CACHE_CHECK([whether $am_make supports nested variables],
+   [am_cv_make_support_nested_variables],
+   [if AS_ECHO([['TRUE=$(BAR$(V))
+BAR0=false
+BAR1=true
+V=1
+am__doit:
+	@$(TRUE)
+.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
+  am_cv_make_support_nested_variables=yes
+else
+  am_cv_make_support_nested_variables=no
+fi])
+if test $am_cv_make_support_nested_variables = yes; then
+  dnl Using '$V' instead of '$(V)' breaks IRIX make.
+  AM_V='$(V)'
+  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
+else
+  AM_V=$AM_DEFAULT_VERBOSITY
+  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
+fi
+AC_SUBST([AM_V])dnl
+AM_SUBST_NOTMAKE([AM_V])dnl
+AC_SUBST([AM_DEFAULT_V])dnl
+AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
+AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
+AM_BACKSLASH='\'
+AC_SUBST([AM_BACKSLASH])dnl
+_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
+])
+
+# Copyright (C) 2001-2017 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.
+
+# AM_PROG_INSTALL_STRIP
+# ---------------------
+# One issue with vendor 'install' (even GNU) is that you can't
+# specify the program used to strip binaries.  This is especially
+# annoying in cross-compiling environments, where the build's strip
+# is unlikely to handle the host's binaries.
+# Fortunately install-sh will honor a STRIPPROG variable, so we
+# always use install-sh in "make install-strip", and initialize
+# STRIPPROG with the value of the STRIP variable (set by the user).
+AC_DEFUN([AM_PROG_INSTALL_STRIP],
+[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+# Installed binaries are usually stripped using 'strip' when the user
+# run "make install-strip".  However 'strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the 'STRIP' environment variable to overrule this program.
+dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
+if test "$cross_compiling" != no; then
+  AC_CHECK_TOOL([STRIP], [strip], :)
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+AC_SUBST([INSTALL_STRIP_PROGRAM])])
+
+# Copyright (C) 2006-2017 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.
+
+# _AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
+# This macro is traced by Automake.
+AC_DEFUN([_AM_SUBST_NOTMAKE])
+
+# AM_SUBST_NOTMAKE(VARIABLE)
+# --------------------------
+# Public sister of _AM_SUBST_NOTMAKE.
+AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
+
+# Check how to create a tarball.                            -*- Autoconf -*-
+
+# Copyright (C) 2004-2017 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.
+
+# _AM_PROG_TAR(FORMAT)
+# --------------------
+# Check how to create a tarball in format FORMAT.
+# FORMAT should be one of 'v7', 'ustar', or 'pax'.
+#
+# Substitute a variable $(am__tar) that is a command
+# writing to stdout a FORMAT-tarball containing the directory
+# $tardir.
+#     tardir=directory && $(am__tar) > result.tar
+#
+# Substitute a variable $(am__untar) that extract such
+# a tarball read from stdin.
+#     $(am__untar) < result.tar
+#
+AC_DEFUN([_AM_PROG_TAR],
+[# Always define AMTAR for backward compatibility.  Yes, it's still used
+# in the wild :-(  We should find a proper way to deprecate it ...
+AC_SUBST([AMTAR], ['$${TAR-tar}'])
+
+# We'll loop over all known methods to create a tar archive until one works.
+_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
+
+m4_if([$1], [v7],
+  [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
+
+  [m4_case([$1],
+    [ustar],
+     [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
+      # There is notably a 21 bits limit for the UID and the GID.  In fact,
+      # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
+      # and bug#13588).
+      am_max_uid=2097151 # 2^21 - 1
+      am_max_gid=$am_max_uid
+      # The $UID and $GID variables are not portable, so we need to resort
+      # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
+      # below are definitely unexpected, so allow the users to see them
+      # (that is, avoid stderr redirection).
+      am_uid=`id -u || echo unknown`
+      am_gid=`id -g || echo unknown`
+      AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
+      if test $am_uid -le $am_max_uid; then
+         AC_MSG_RESULT([yes])
+      else
+         AC_MSG_RESULT([no])
+         _am_tools=none
+      fi
+      AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
+      if test $am_gid -le $am_max_gid; then
+         AC_MSG_RESULT([yes])
+      else
+        AC_MSG_RESULT([no])
+        _am_tools=none
+      fi],
+
+  [pax],
+    [],
+
+  [m4_fatal([Unknown tar format])])
+
+  AC_MSG_CHECKING([how to create a $1 tar archive])
+
+  # Go ahead even if we have the value already cached.  We do so because we
+  # need to set the values for the 'am__tar' and 'am__untar' variables.
+  _am_tools=${am_cv_prog_tar_$1-$_am_tools}
+
+  for _am_tool in $_am_tools; do
+    case $_am_tool in
+    gnutar)
+      for _am_tar in tar gnutar gtar; do
+        AM_RUN_LOG([$_am_tar --version]) && break
+      done
+      am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
+      am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
+      am__untar="$_am_tar -xf -"
+      ;;
+    plaintar)
+      # Must skip GNU tar: if it does not support --format= it doesn't create
+      # ustar tarball either.
+      (tar --version) >/dev/null 2>&1 && continue
+      am__tar='tar chf - "$$tardir"'
+      am__tar_='tar chf - "$tardir"'
+      am__untar='tar xf -'
+      ;;
+    pax)
+      am__tar='pax -L -x $1 -w "$$tardir"'
+      am__tar_='pax -L -x $1 -w "$tardir"'
+      am__untar='pax -r'
+      ;;
+    cpio)
+      am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
+      am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
+      am__untar='cpio -i -H $1 -d'
+      ;;
+    none)
+      am__tar=false
+      am__tar_=false
+      am__untar=false
+      ;;
+    esac
+
+    # If the value was cached, stop now.  We just wanted to have am__tar
+    # and am__untar set.
+    test -n "${am_cv_prog_tar_$1}" && break
+
+    # tar/untar a dummy directory, and stop if the command works.
+    rm -rf conftest.dir
+    mkdir conftest.dir
+    echo GrepMe > conftest.dir/file
+    AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
+    rm -rf conftest.dir
+    if test -s conftest.tar; then
+      AM_RUN_LOG([$am__untar <conftest.tar])
+      AM_RUN_LOG([cat conftest.dir/file])
+      grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
+    fi
+  done
+  rm -rf conftest.dir
+
+  AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
+  AC_MSG_RESULT([$am_cv_prog_tar_$1])])
+
+AC_SUBST([am__tar])
+AC_SUBST([am__untar])
+]) # _AM_PROG_TAR
+
+m4_include([m4/ac_python_devel.m4])
+m4_include([m4/libtool.m4])
+m4_include([m4/ltoptions.m4])
+m4_include([m4/ltsugar.m4])
+m4_include([m4/ltversion.m4])
+m4_include([m4/lt~obsolete.m4])