diff --git a/Makefile.in b/Makefile.in
index 17a86cf132833f0f0cc4ebd19248d8fac7d5060b..75c3882b197289eb2a6a82a9cd3b1f21d8725b8f 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,7 +1,7 @@
-# Makefile.in generated by automake 1.16.1 from Makefile.am.
+# Makefile.in generated by automake 1.16.2 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994-2018 Free Software Foundation, Inc.
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
 
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -173,7 +173,8 @@ am__DIST_COMMON = $(srcdir)/Makefile.in $(top_srcdir)/config/compile \
 	$(top_srcdir)/config/install-sh $(top_srcdir)/config/ltmain.sh \
 	$(top_srcdir)/config/missing COPYING NEWS README \
 	config/compile config/config.guess config/config.sub \
-	config/install-sh config/ltmain.sh config/missing
+	config/depcomp config/install-sh config/ltmain.sh \
+	config/missing
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 distdir = $(PACKAGE)-$(VERSION)
 top_distdir = $(distdir)
@@ -622,6 +623,10 @@ dist-xz: distdir
 	tardir=$(distdir) && $(am__tar) | XZ_OPT=$${XZ_OPT--e} xz -c >$(distdir).tar.xz
 	$(am__post_remove_distdir)
 
+dist-zstd: distdir
+	tardir=$(distdir) && $(am__tar) | zstd -c $${ZSTD_CLEVEL-$${ZSTD_OPT--19}} >$(distdir).tar.zst
+	$(am__post_remove_distdir)
+
 dist-tarZ: distdir
 	@echo WARNING: "Support for distribution archives compressed with" \
 		       "legacy program 'compress' is deprecated." >&2
@@ -664,6 +669,8 @@ distcheck: dist
 	  eval GZIP= gzip $(GZIP_ENV) -dc $(distdir).shar.gz | unshar ;;\
 	*.zip*) \
 	  unzip $(distdir).zip ;;\
+	*.tar.zst*) \
+	  zstd -dc $(distdir).tar.zst | $(am__untar) ;;\
 	esac
 	chmod -R a-w $(distdir)
 	chmod u+w $(distdir)
@@ -855,19 +862,20 @@ uninstall-am:
 	am--refresh check check-am clean clean-cscope clean-generic \
 	clean-libtool cscope cscopelist-am ctags ctags-am dist \
 	dist-all dist-bzip2 dist-gzip dist-lzip dist-shar dist-tarZ \
-	dist-xz dist-zip distcheck distclean distclean-generic \
-	distclean-hdr distclean-libtool distclean-tags distcleancheck \
-	distdir distuninstallcheck doc-am doc-local dvi dvi-am html \
-	html-am info info-am install install-am install-data \
-	install-data-am install-doc-am install-doc-local install-dvi \
-	install-dvi-am install-exec install-exec-am install-html \
-	install-html-am install-info install-info-am install-man \
-	install-man-am install-man-local install-pdf install-pdf-am \
-	install-ps install-ps-am install-strip installcheck \
-	installcheck-am installdirs installdirs-am maintainer-clean \
-	maintainer-clean-generic man-am man-local mostlyclean \
-	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
-	tags tags-am uninstall uninstall-am
+	dist-xz dist-zip dist-zstd distcheck distclean \
+	distclean-generic distclean-hdr distclean-libtool \
+	distclean-tags distcleancheck distdir distuninstallcheck \
+	doc-am doc-local dvi dvi-am html html-am info info-am install \
+	install-am install-data install-data-am install-doc-am \
+	install-doc-local install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-man-am install-man-local \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	installdirs-am maintainer-clean maintainer-clean-generic \
+	man-am man-local mostlyclean mostlyclean-generic \
+	mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \
+	uninstall-am
 
 .PRECIOUS: Makefile
 
diff --git a/aclocal.m4 b/aclocal.m4
index 511fc05c18ee9cf9bc732cd203f8b143ead202e0..f7ecdf7706de23799429eea12476a09bb440d68d 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,6 +1,6 @@
-# generated automatically by aclocal 1.13.4 -*- Autoconf -*-
+# generated automatically by aclocal 1.16.2 -*- Autoconf -*-
 
-# Copyright (C) 1996-2013 Free Software Foundation, Inc.
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -20,7 +20,7 @@ You have another version of autoconf.  It may work, but is not guaranteed to.
 If you have problems, you may need to regenerate the build system entirely.
 To do so, use the procedure documented by the package, typically 'autoreconf'.])])
 
-# Copyright (C) 2002-2013 Free Software Foundation, Inc.
+# Copyright (C) 2002-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -32,10 +32,10 @@ To do so, use the procedure documented by the package, typically 'autoreconf'.])
 # generated from the m4 files accompanying Automake X.Y.
 # (This private macro should not be called outside this file.)
 AC_DEFUN([AM_AUTOMAKE_VERSION],
-[am__api_version='1.13'
+[am__api_version='1.16'
 dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
 dnl require some minimum version.  Point them to the right macro.
-m4_if([$1], [1.13.4], [],
+m4_if([$1], [1.16.2], [],
       [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
 ])
 
@@ -51,14 +51,14 @@ m4_define([_AM_AUTOCONF_VERSION], [])
 # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
 # This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
-[AM_AUTOMAKE_VERSION([1.13.4])dnl
+[AM_AUTOMAKE_VERSION([1.16.2])dnl
 m4_ifndef([AC_AUTOCONF_VERSION],
   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
 
 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
 
-# Copyright (C) 2001-2013 Free Software Foundation, Inc.
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -103,15 +103,14 @@ _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
 # configured tree to be moved without reconfiguration.
 
 AC_DEFUN([AM_AUX_DIR_EXPAND],
-[dnl Rely on autoconf to set up CDPATH properly.
-AC_PREREQ([2.50])dnl
-# expand $ac_aux_dir to an absolute path
-am_aux_dir=`cd $ac_aux_dir && pwd`
+[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) 1997-2013 Free Software Foundation, Inc.
+# Copyright (C) 1997-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -142,7 +141,7 @@ AC_CONFIG_COMMANDS_PRE(
 Usually this means the macro was only invoked conditionally.]])
 fi])])
 
-# Copyright (C) 1999-2013 Free Software Foundation, Inc.
+# Copyright (C) 1999-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -333,13 +332,12 @@ _AM_SUBST_NOTMAKE([am__nodep])dnl
 
 # Generate code to set up dependency tracking.              -*- Autoconf -*-
 
-# Copyright (C) 1999-2013 Free Software Foundation, Inc.
+# Copyright (C) 1999-2020 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],
@@ -347,49 +345,43 @@ 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 $CONFIG_FILES ;;
-  esac
+  # TODO: see whether this extra hack can be removed once we start
+  # requiring Autoconf 2.70 or later.
+  AS_CASE([$CONFIG_FILES],
+          [*\'*], [eval set x "$CONFIG_FILES"],
+          [*], [set x $CONFIG_FILES])
   shift
-  for mf
+  # Used to flag and report bootstrapping failures.
+  am_rc=0
+  for am_mf
   do
     # Strip MF so we end up with the name of the file.
-    mf=`echo "$mf" | sed -e 's/:.*$//'`
-    # Check whether this is an Automake generated Makefile or not.
-    # We used to match only the files named 'Makefile.in', but
-    # some people rename them; so instead we look at the file content.
-    # Grep'ing the first line is not enough: some people post-process
-    # each Makefile.in and add a new line on top of each file to say so.
-    # Grep'ing the whole file is not good either: AIX grep has a line
+    am_mf=`AS_ECHO(["$am_mf"]) | sed -e 's/:.*$//'`
+    # Check whether this is an Automake generated Makefile which includes
+    # dependency-tracking related rules and includes.
+    # Grep'ing the whole file directly is not great: AIX grep has a line
     # limit of 2048, but all sed's we know have understand at least 4000.
-    if sed -n 's,^#.*generated by automake.*,X,p' "$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
+    sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
+      || continue
+    am_dirpart=`AS_DIRNAME(["$am_mf"])`
+    am_filepart=`AS_BASENAME(["$am_mf"])`
+    AM_RUN_LOG([cd "$am_dirpart" \
+      && sed -e '/# am--include-marker/d' "$am_filepart" \
+        | $MAKE -f - am--depfiles]) || am_rc=$?
   done
+  if test $am_rc -ne 0; then
+    AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
+    for automatic dependency tracking.  If GNU make was not used, consider
+    re-running the configure script with MAKE="gmake" (or whatever is
+    necessary).  You can also try re-running configure with the
+    '--disable-dependency-tracking' option to at least be able to build
+    the package (albeit without support for automatic dependency tracking).])
+  fi
+  AS_UNSET([am_dirpart])
+  AS_UNSET([am_filepart])
+  AS_UNSET([am_mf])
+  AS_UNSET([am_rc])
+  rm -f conftest-deps.mk
 }
 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS
 
@@ -398,18 +390,17 @@ AC_DEFUN([_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.
+# This code is only required when automatic dependency tracking is enabled.
+# This creates each '.Po' and '.Plo' makefile fragment that we'll 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="$ac_aux_dir"])
-])
+     [AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"])])
 
 # AM_EXTRA_RECURSIVE_TARGETS                                -*- Autoconf -*-
 
-# Copyright (C) 2012-2013 Free Software Foundation, Inc.
+# Copyright (C) 2012-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -426,7 +417,7 @@ AC_DEFUN([AM_EXTRA_RECURSIVE_TARGETS], [])
 
 # Do all the work for Automake.                             -*- Autoconf -*-
 
-# Copyright (C) 1996-2013 Free Software Foundation, Inc.
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -435,6 +426,12 @@ AC_DEFUN([AM_EXTRA_RECURSIVE_TARGETS], [])
 # 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])
 # -----------------------------------------------
@@ -507,11 +504,11 @@ 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>
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
 AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
-# We need awk for the "check" target.  The system "awk" is bad on
-# some platforms.
+# We need awk for the "check" target (and possibly the TAP driver).  The
+# system "awk" is bad on some platforms.
 AC_REQUIRE([AC_PROG_AWK])dnl
 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
@@ -543,6 +540,51 @@ dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
 AC_CONFIG_COMMANDS_PRE(dnl
 [m4_provide_if([_AM_COMPILER_EXEEXT],
   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
+
+# 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: <https://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
@@ -551,7 +593,6 @@ 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.
@@ -573,7 +614,7 @@ for _am_header in $config_headers :; do
 done
 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
 
-# Copyright (C) 2001-2013 Free Software Foundation, Inc.
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -584,7 +625,7 @@ echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_co
 # Define $install_sh.
 AC_DEFUN([AM_PROG_INSTALL_SH],
 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
-if test x"${install_sh}" != xset; then
+if test x"${install_sh+set}" != xset; then
   case $am_aux_dir in
   *\ * | *\	*)
     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
@@ -594,7 +635,7 @@ if test x"${install_sh}" != xset; then
 fi
 AC_SUBST([install_sh])])
 
-# Copyright (C) 2003-2013 Free Software Foundation, Inc.
+# Copyright (C) 2003-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -616,7 +657,7 @@ AC_SUBST([am__leading_dot])])
 # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
 # From Jim Meyering
 
-# Copyright (C) 1996-2013 Free Software Foundation, Inc.
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -651,7 +692,7 @@ AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
 
 # Check to see how 'make' treats includes.	            -*- Autoconf -*-
 
-# Copyright (C) 2001-2013 Free Software Foundation, Inc.
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -659,49 +700,42 @@ AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
 
 # AM_MAKE_INCLUDE()
 # -----------------
-# Check to see how make treats includes.
+# Check whether make has an 'include' directive that can support all
+# the idioms we need for our automatic dependency tracking code.
 AC_DEFUN([AM_MAKE_INCLUDE],
-[am_make=${MAKE-make}
-cat > confinc << 'END'
+[AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
+cat > confinc.mk << 'END'
 am__doit:
-	@echo this is the am__doit target
+	@echo this is the am__doit target >confinc.out
 .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([$_am_result])
-rm -f confinc confmf
-])
+# BSD make does it like this.
+echo '.include "confinc.mk" # ignored' > confmf.BSD
+# Other make implementations (GNU, Solaris 10, AIX) do it like this.
+echo 'include confinc.mk # ignored' > confmf.GNU
+_am_result=no
+for s in GNU BSD; do
+  AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
+  AS_CASE([$?:`cat confinc.out 2>/dev/null`],
+      ['0:this is the am__doit target'],
+      [AS_CASE([$s],
+          [BSD], [am__include='.include' am__quote='"'],
+          [am__include='include' am__quote=''])])
+  if test "$am__include" != "#"; then
+    _am_result="yes ($s style)"
+    break
+  fi
+done
+rm -f confinc.* confmf.*
+AC_MSG_RESULT([${_am_result}])
+AC_SUBST([am__include])])
+AC_SUBST([am__quote])])
 
 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
 
-# Copyright (C) 1997-2013 Free Software Foundation, Inc.
+# Copyright (C) 1997-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -740,7 +774,7 @@ fi
 
 # Helper functions for option handling.                     -*- Autoconf -*-
 
-# Copyright (C) 2001-2013 Free Software Foundation, Inc.
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -769,9 +803,73 @@ AC_DEFUN([_AM_SET_OPTIONS],
 AC_DEFUN([_AM_IF_OPTION],
 [m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
 
+# Copyright (C) 1999-2020 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 $CC"
+fi
+AC_LANG_POP([C])])
+
+# For backward compatibility.
+AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
+
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_RUN_LOG(COMMAND)
+# -------------------
+# Run COMMAND, save the exit status in ac_status, and log it.
+# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
+AC_DEFUN([AM_RUN_LOG],
+[{ echo "$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) 1996-2013 Free Software Foundation, Inc.
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -852,7 +950,7 @@ AC_CONFIG_COMMANDS_PRE(
 rm -f conftest.file
 ])
 
-# Copyright (C) 2009-2013 Free Software Foundation, Inc.
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -912,7 +1010,7 @@ AC_SUBST([AM_BACKSLASH])dnl
 _AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
 ])
 
-# Copyright (C) 2001-2013 Free Software Foundation, Inc.
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -940,7 +1038,7 @@ fi
 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
 AC_SUBST([INSTALL_STRIP_PROGRAM])])
 
-# Copyright (C) 2006-2013 Free Software Foundation, Inc.
+# Copyright (C) 2006-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -959,7 +1057,7 @@ AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
 
 # Check how to create a tarball.                            -*- Autoconf -*-
 
-# Copyright (C) 2004-2013 Free Software Foundation, Inc.
+# Copyright (C) 2004-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/configure b/configure
index 512fcfaf589eb0f6df233a85d867edb47bf198a6..dca5a362f2b90daa6a437f5487d9355d769c73f7 100755
--- a/configure
+++ b/configure
@@ -688,6 +688,8 @@ ENABLE_CHECK_FALSE
 ENABLE_CHECK_TRUE
 CHECK_CLIBS
 CHECK_CFLAGS
+ENABLE_GMP_FALSE
+ENABLE_GMP_TRUE
 ENABLE_EXAMPLES_FALSE
 ENABLE_EXAMPLES_TRUE
 ENABLE_OPENMP_FALSE
@@ -730,7 +732,6 @@ am__nodep
 AMDEPBACKSLASH
 AMDEP_FALSE
 AMDEP_TRUE
-am__quote
 am__include
 DEPDIR
 OBJEXT
@@ -816,7 +817,8 @@ PACKAGE_VERSION
 PACKAGE_TARNAME
 PACKAGE_NAME
 PATH_SEPARATOR
-SHELL'
+SHELL
+am__quote'
 ac_subst_files=''
 ac_user_opts='
 enable_option_checking
@@ -833,6 +835,7 @@ with_sysroot
 enable_libtool_lock
 enable_openmp
 enable_examples
+enable_gmp
 enable_check
 with_check_root
 with_check_include
@@ -1498,6 +1501,8 @@ Optional Features:
   --enable-openmp         ensure compatibility with OpenMP applications
                           [default=no]
   --enable-examples       build examples [default=yes]
+  --enable-gmp            use GNU multiprecision library in examples
+                          [default=no]
   --enable-check          enable unit testing with check library
                           [default=auto]
   --disable-doxygen-doc   don't generate any doxygen documentation
@@ -2359,7 +2364,7 @@ ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
 ac_config_headers="$ac_config_headers config/config.h"
 
 
-am__api_version='1.13'
+am__api_version='1.16'
 
 # Find a good install program.  We prefer a C program (faster),
 # so one script is as good as another.  But avoid the broken or
@@ -2531,8 +2536,8 @@ test "$program_suffix" != NONE &&
 ac_script='s/[\\$]/&&/g;s/;s,x,x,$//'
 program_transform_name=`$as_echo "$program_transform_name" | sed "$ac_script"`
 
-# expand $ac_aux_dir to an absolute path
-am_aux_dir=`cd $ac_aux_dir && pwd`
+# Expand $ac_aux_dir to an absolute path.
+am_aux_dir=`cd "$ac_aux_dir" && pwd`
 
 if test x"${MISSING+set}" != xset; then
   case $am_aux_dir in
@@ -2551,7 +2556,7 @@ else
 $as_echo "$as_me: WARNING: 'missing' script is too old or missing" >&2;}
 fi
 
-if test x"${install_sh}" != xset; then
+if test x"${install_sh+set}" != xset; then
   case $am_aux_dir in
   *\ * | *\	*)
     install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
@@ -2875,12 +2880,12 @@ MAKEINFO=${MAKEINFO-"${am_missing_run}makeinfo"}
 
 # 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>
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
 mkdir_p='$(MKDIR_P)'
 
-# We need awk for the "check" target.  The system "awk" is bad on
-# some platforms.
+# We need awk for the "check" target (and possibly the TAP driver).  The
+# system "awk" is bad on some platforms.
 # Always define AMTAR for backward compatibility.  Yes, it's still used
 # in the wild :-(  We should find a proper way to deprecate it ...
 AMTAR='$${TAR-tar}'
@@ -2896,6 +2901,48 @@ am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'
 
 
 
+# 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: <https://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
+    as_fn_error $? "Your 'rm' program is bad, sorry." "$LINENO" 5
+  fi
+fi
+
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to enable maintainer-specific portions of Makefiles" >&5
 $as_echo_n "checking whether to enable maintainer-specific portions of Makefiles... " >&6; }
@@ -3129,45 +3176,45 @@ DEPDIR="${am__leading_dot}deps"
 
 ac_config_commands="$ac_config_commands depfiles"
 
-
-am_make=${MAKE-make}
-cat > confinc << 'END'
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} supports the include directive" >&5
+$as_echo_n "checking whether ${MAKE-make} supports the include directive... " >&6; }
+cat > confinc.mk << 'END'
 am__doit:
-	@echo this is the am__doit target
+	@echo this is the am__doit target >confinc.out
 .PHONY: am__doit
 END
-# If we don't find an include directive, just comment out the code.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for style of include used by $am_make" >&5
-$as_echo_n "checking for style of include used by $am_make... " >&6; }
 am__include="#"
 am__quote=
-_am_result=none
-# First try GNU make style include.
-echo "include confinc" > confmf
-# Ignore all kinds of additional output from 'make'.
-case `$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
+# BSD make does it like this.
+echo '.include "confinc.mk" # ignored' > confmf.BSD
+# Other make implementations (GNU, Solaris 10, AIX) do it like this.
+echo 'include confinc.mk # ignored' > confmf.GNU
+_am_result=no
+for s in GNU BSD; do
+  { echo "$as_me:$LINENO: ${MAKE-make} -f confmf.$s && cat confinc.out" >&5
+   (${MAKE-make} -f confmf.$s && cat confinc.out) >&5 2>&5
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   (exit $ac_status); }
+  case $?:`cat confinc.out 2>/dev/null` in #(
+  '0:this is the am__doit target') :
+    case $s in #(
+  BSD) :
+    am__include='.include' am__quote='"' ;; #(
+  *) :
+    am__include='include' am__quote='' ;;
+esac ;; #(
+  *) :
      ;;
-   esac
-fi
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $_am_result" >&5
-$as_echo "$_am_result" >&6; }
-rm -f confinc confmf
+esac
+  if test "$am__include" != "#"; then
+    _am_result="yes ($s style)"
+    break
+  fi
+done
+rm -f confinc.* confmf.*
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${_am_result}" >&5
+$as_echo "${_am_result}" >&6; }
 
 # Check whether --enable-dependency-tracking was given.
 if test "${enable_dependency_tracking+set}" = set; then :
@@ -3977,6 +4024,65 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC understands -c and -o together" >&5
+$as_echo_n "checking whether $CC understands -c and -o together... " >&6; }
+if ${am_cv_prog_cc_c_o+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+  # Make sure it works both with $CC and with simple cc.
+  # Following AC_PROG_CC_C_O, we do the test twice because some
+  # compilers refuse to overwrite an existing .o file with -o,
+  # though they will create one.
+  am_cv_prog_cc_c_o=yes
+  for am_i in 1 2; do
+    if { echo "$as_me:$LINENO: $CC -c conftest.$ac_ext -o conftest2.$ac_objext" >&5
+   ($CC -c conftest.$ac_ext -o conftest2.$ac_objext) >&5 2>&5
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   (exit $ac_status); } \
+         && test -f conftest2.$ac_objext; then
+      : OK
+    else
+      am_cv_prog_cc_c_o=no
+      break
+    fi
+  done
+  rm -f core conftest*
+  unset am_i
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_prog_cc_c_o" >&5
+$as_echo "$am_cv_prog_cc_c_o" >&6; }
+if test "$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 $CC"
+fi
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
 depcc="$CC"   am_compiler_list=
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking dependency style of $depcc" >&5
@@ -15877,6 +15983,22 @@ else
 fi
 
 
+# Check whether --enable-gmp was given.
+if test "${enable_gmp+set}" = set; then :
+  enableval=$enable_gmp;
+else
+  enable_gmp=no
+fi
+
+ if test x"$enable_gmp" = xyes; then
+  ENABLE_GMP_TRUE=
+  ENABLE_GMP_FALSE='#'
+else
+  ENABLE_GMP_TRUE='#'
+  ENABLE_GMP_FALSE=
+fi
+
+
 # Check whether --enable-check was given.
 if test "${enable_check+set}" = set; then :
   enableval=$enable_check;
@@ -18201,6 +18323,10 @@ if test -z "${ENABLE_EXAMPLES_TRUE}" && test -z "${ENABLE_EXAMPLES_FALSE}"; then
   as_fn_error $? "conditional \"ENABLE_EXAMPLES\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${ENABLE_GMP_TRUE}" && test -z "${ENABLE_GMP_FALSE}"; then
+  as_fn_error $? "conditional \"ENABLE_GMP\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${ENABLE_CHECK_TRUE}" && test -z "${ENABLE_CHECK_FALSE}"; then
   as_fn_error $? "conditional \"ENABLE_CHECK\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
@@ -18803,7 +18929,7 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 #
 # INIT-COMMANDS
 #
-AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"
+AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"
 
 
 # The HP-UX ksh and POSIX shell print the target directory to stdout
@@ -19803,29 +19929,35 @@ $as_echo "$as_me: executing $ac_file commands" >&6;}
   # 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
+  # TODO: see whether this extra hack can be removed once we start
+  # requiring Autoconf 2.70 or later.
+  case $CONFIG_FILES in #(
+  *\'*) :
+    eval set x "$CONFIG_FILES" ;; #(
+  *) :
+    set x $CONFIG_FILES ;; #(
+  *) :
+     ;;
+esac
   shift
-  for mf
+  # Used to flag and report bootstrapping failures.
+  am_rc=0
+  for am_mf
   do
     # Strip MF so we end up with the name of the file.
-    mf=`echo "$mf" | sed -e 's/:.*$//'`
-    # Check whether this is an Automake generated Makefile or not.
-    # We used to match only the files named 'Makefile.in', but
-    # some people rename them; so instead we look at the file content.
-    # Grep'ing the first line is not enough: some people post-process
-    # each Makefile.in and add a new line on top of each file to say so.
-    # Grep'ing the whole file is not good either: AIX grep has a line
+    am_mf=`$as_echo "$am_mf" | sed -e 's/:.*$//'`
+    # Check whether this is an Automake generated Makefile which includes
+    # dependency-tracking related rules and includes.
+    # Grep'ing the whole file directly is not great: 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 -- "$mf" ||
-$as_expr X"$mf" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
-	 X"$mf" : 'X\(//\)[^/]' \| \
-	 X"$mf" : 'X\(//\)$' \| \
-	 X"$mf" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X"$mf" |
+    sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
+      || continue
+    am_dirpart=`$as_dirname -- "$am_mf" ||
+$as_expr X"$am_mf" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$am_mf" : 'X\(//\)[^/]' \| \
+	 X"$am_mf" : 'X\(//\)$' \| \
+	 X"$am_mf" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$am_mf" |
     sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
 	    s//\1/
 	    q
@@ -19843,53 +19975,50 @@ $as_echo X"$mf" |
 	    q
 	  }
 	  s/.*/./; q'`
-    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" ||
-$as_expr X"$file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
-	 X"$file" : 'X\(//\)[^/]' \| \
-	 X"$file" : 'X\(//\)$' \| \
-	 X"$file" : 'X\(/\)' \| . 2>/dev/null ||
-$as_echo X"$file" |
-    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
-	    s//\1/
-	    q
-	  }
-	  /^X\(\/\/\)[^/].*/{
+    am_filepart=`$as_basename -- "$am_mf" ||
+$as_expr X/"$am_mf" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$am_mf" : 'X\(//\)$' \| \
+	 X"$am_mf" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$am_mf" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
 	    s//\1/
 	    q
 	  }
-	  /^X\(\/\/\)$/{
+	  /^X\/\(\/\/\)$/{
 	    s//\1/
 	    q
 	  }
-	  /^X\(\/\).*/{
+	  /^X\/\(\/\).*/{
 	    s//\1/
 	    q
 	  }
 	  s/.*/./; q'`
-      as_dir=$dirpart/$fdir; as_fn_mkdir_p
-      # echo "creating $dirpart/$file"
-      echo '# dummy' > "$dirpart/$file"
-    done
+    { echo "$as_me:$LINENO: cd "$am_dirpart" \
+      && sed -e '/# am--include-marker/d' "$am_filepart" \
+        | $MAKE -f - am--depfiles" >&5
+   (cd "$am_dirpart" \
+      && sed -e '/# am--include-marker/d' "$am_filepart" \
+        | $MAKE -f - am--depfiles) >&5 2>&5
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   (exit $ac_status); } || am_rc=$?
   done
+  if test $am_rc -ne 0; then
+    { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "Something went wrong bootstrapping makefile fragments
+    for automatic dependency tracking.  If GNU make was not used, consider
+    re-running the configure script with MAKE=\"gmake\" (or whatever is
+    necessary).  You can also try re-running configure with the
+    '--disable-dependency-tracking' option to at least be able to build
+    the package (albeit without support for automatic dependency tracking).
+See \`config.log' for more details" "$LINENO" 5; }
+  fi
+  { am_dirpart=; unset am_dirpart;}
+  { am_filepart=; unset am_filepart;}
+  { am_mf=; unset am_mf;}
+  { am_rc=; unset am_rc;}
+  rm -f conftest-deps.mk
 }
  ;;
     "libtool":C)
diff --git a/doc/Makefile.in b/doc/Makefile.in
index 798840fb14504e113c01e908381f7ed315418b2b..1bacf55dbc65abfa0659ad9fe66dcb740d23be9a 100644
--- a/doc/Makefile.in
+++ b/doc/Makefile.in
@@ -1,7 +1,7 @@
-# Makefile.in generated by automake 1.13.4 from Makefile.am.
+# Makefile.in generated by automake 1.16.2 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
 
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -14,7 +14,17 @@
 
 @SET_MAKE@
 VPATH = @srcdir@
-am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+    true; \
+  else \
+    false; \
+  fi; \
+}
 am__make_running_with_option = \
   case $${target_option-} in \
       ?) ;; \
@@ -78,8 +88,6 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 subdir = doc
-DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
-	$(srcdir)/Doxyfile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/acx_fc_module.m4 \
 	$(top_srcdir)/m4/acx_fc_pp.m4 $(top_srcdir)/m4/acx_lang_lib.m4 \
@@ -92,6 +100,7 @@ am__aclocal_m4_deps = $(top_srcdir)/m4/acx_fc_module.m4 \
 	$(top_srcdir)/m4/lt~obsolete.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
+DIST_COMMON = $(srcdir)/Makefile.am $(am__DIST_COMMON)
 mkinstalldirs = $(install_sh) -d
 CONFIG_HEADER = $(top_builddir)/config/config.h
 CONFIG_CLEAN_FILES = Doxyfile
@@ -118,6 +127,7 @@ am__can_run_installinfo = \
 am__extra_recursive_targets = doc-recursive install-doc-recursive \
 	man-recursive install-man-recursive
 am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP)
+am__DIST_COMMON = $(srcdir)/Doxyfile.in $(srcdir)/Makefile.in
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
@@ -302,14 +312,13 @@ $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__confi
 	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign doc/Makefile'; \
 	$(am__cd) $(top_srcdir) && \
 	  $(AUTOMAKE) --foreign doc/Makefile
-.PRECIOUS: Makefile
 Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
 	@case '$?' in \
 	  *config.status*) \
 	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
 	  *) \
-	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
-	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
 	esac;
 
 $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
@@ -328,10 +337,10 @@ mostlyclean-libtool:
 
 clean-libtool:
 	-rm -rf .libs _libs
-doc-local:
-install-doc-local:
-man-local:
-install-man-local:
+doc-local: 
+install-doc-local: 
+man-local: 
+install-man-local: 
 tags TAGS:
 
 ctags CTAGS:
@@ -339,7 +348,10 @@ ctags CTAGS:
 cscope cscopelist:
 
 
-distdir: $(DISTFILES)
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
 	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
 	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
 	list='$(DISTFILES)'; \
@@ -480,6 +492,8 @@ uninstall-am:
 	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
 	tags-am uninstall uninstall-am
 
+.PRECIOUS: Makefile
+
 @DX_RULES@
 
 .NOTPARALLEL:
diff --git a/examples/Makefile.in b/examples/Makefile.in
index 10844193d4989b98276f14078fe4a59be10e0649..a08764591a789a4427d4d3d98f358b4a5d053384 100644
--- a/examples/Makefile.in
+++ b/examples/Makefile.in
@@ -1,7 +1,7 @@
-# Makefile.in generated by automake 1.16.1 from Makefile.am.
+# Makefile.in generated by automake 1.16.2 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994-2018 Free Software Foundation, Inc.
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
 
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -98,7 +98,10 @@ host_triplet = @host@
 @ENABLE_EXAMPLES_TRUE@	recurrence$(EXEEXT) repetitor$(EXEEXT) \
 @ENABLE_EXAMPLES_TRUE@	simulate_iau$(EXEEXT) tas$(EXEEXT) \
 @ENABLE_EXAMPLES_TRUE@	test_dace$(EXEEXT) \
-@ENABLE_EXAMPLES_TRUE@	time_calculus$(EXEEXT) uniq$(EXEEXT)
+@ENABLE_EXAMPLES_TRUE@	time_calculus$(EXEEXT) uniq$(EXEEXT) \
+@ENABLE_EXAMPLES_TRUE@	int_div_example$(EXEEXT)
+@ENABLE_GMP_TRUE@am__append_1 = -DHAVE_GMP
+@ENABLE_GMP_TRUE@am__append_2 = -lgmp
 subdir = examples
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/acx_fc_module.m4 \
@@ -121,7 +124,9 @@ PROGRAMS = $(noinst_PROGRAMS)
 callback_test_SOURCES = callback_test.f90
 callback_test_OBJECTS = callback_test.$(OBJEXT)
 callback_test_LDADD = $(LDADD)
-callback_test_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+am__DEPENDENCIES_1 =
+callback_test_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 AM_V_lt = $(am__v_lt_@AM_V@)
 am__v_lt_ = $(am__v_lt_@AM_DEFAULT_V@)
 am__v_lt_0 = --silent
@@ -129,71 +134,93 @@ am__v_lt_1 =
 comp_weights_SOURCES = comp_weights.f90
 comp_weights_OBJECTS = comp_weights.$(OBJEXT)
 comp_weights_LDADD = $(LDADD)
-comp_weights_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+comp_weights_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 am_duration_OBJECTS = duration.$(OBJEXT) mo_kind.$(OBJEXT)
 duration_OBJECTS = $(am_duration_OBJECTS)
 duration_LDADD = $(LDADD)
-duration_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+duration_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 example_SOURCES = example.f90
 example_OBJECTS = example.$(OBJEXT)
 example_LDADD = $(LDADD)
-example_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+example_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 example_hl_SOURCES = example_hl.f90
 example_hl_OBJECTS = example_hl.$(OBJEXT)
 example_hl_LDADD = $(LDADD)
-example_hl_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+example_hl_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 am_iconatm_OBJECTS = iconatm.$(OBJEXT) mo_event_manager.$(OBJEXT)
 iconatm_OBJECTS = $(am_iconatm_OBJECTS)
 iconatm_LDADD = $(LDADD)
-iconatm_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+iconatm_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 am_iconoce_OBJECTS = iconoce.$(OBJEXT) mo_event_manager.$(OBJEXT)
 iconoce_OBJECTS = $(am_iconoce_OBJECTS)
 iconoce_LDADD = $(LDADD)
-iconoce_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+iconoce_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 iconoce_hl_SOURCES = iconoce_hl.f90
 iconoce_hl_OBJECTS = iconoce_hl.$(OBJEXT)
 iconoce_hl_LDADD = $(LDADD)
-iconoce_hl_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+iconoce_hl_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
+am_int_div_example_OBJECTS = int_div_example.$(OBJEXT)
+int_div_example_OBJECTS = $(am_int_div_example_OBJECTS)
+int_div_example_LDADD = $(LDADD)
+int_div_example_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 am_model_integration_OBJECTS = model_integration.$(OBJEXT)
 model_integration_OBJECTS = $(am_model_integration_OBJECTS)
 model_integration_LDADD = $(LDADD)
-model_integration_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+model_integration_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 am_modulo_OBJECTS = modulo.$(OBJEXT)
 modulo_OBJECTS = $(am_modulo_OBJECTS)
 modulo_LDADD = $(LDADD)
-modulo_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+modulo_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 output_control_SOURCES = output_control.f90
 output_control_OBJECTS = output_control.$(OBJEXT)
 output_control_LDADD = $(LDADD)
-output_control_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+output_control_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 am_recurrence_OBJECTS = recurrence.$(OBJEXT)
 recurrence_OBJECTS = $(am_recurrence_OBJECTS)
 recurrence_LDADD = $(LDADD)
-recurrence_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+recurrence_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 repetitor_SOURCES = repetitor.f90
 repetitor_OBJECTS = repetitor.$(OBJEXT)
 repetitor_LDADD = $(LDADD)
-repetitor_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+repetitor_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 simulate_iau_SOURCES = simulate_iau.f90
 simulate_iau_OBJECTS = simulate_iau.$(OBJEXT)
 simulate_iau_LDADD = $(LDADD)
-simulate_iau_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+simulate_iau_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 tas_SOURCES = tas.f90
 tas_OBJECTS = tas.$(OBJEXT)
 tas_LDADD = $(LDADD)
-tas_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+tas_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 am_test_dace_OBJECTS = test_dace.$(OBJEXT) mo_event_manager.$(OBJEXT)
 test_dace_OBJECTS = $(am_test_dace_OBJECTS)
 test_dace_LDADD = $(LDADD)
-test_dace_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+test_dace_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 am_time_calculus_OBJECTS = time_calculus.$(OBJEXT)
 time_calculus_OBJECTS = $(am_time_calculus_OBJECTS)
 time_calculus_LDADD = $(LDADD)
-time_calculus_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+time_calculus_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 uniq_SOURCES = uniq.f90
 uniq_OBJECTS = uniq.$(OBJEXT)
 uniq_LDADD = $(LDADD)
-uniq_DEPENDENCIES = $(top_builddir)/src/libmtime.la
+uniq_DEPENDENCIES = $(top_builddir)/src/libmtime.la \
+	$(am__DEPENDENCIES_1)
 AM_V_P = $(am__v_P_@AM_V@)
 am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
 am__v_P_0 = false
@@ -209,9 +236,9 @@ am__v_at_1 =
 DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)/config
 depcomp = $(SHELL) $(top_srcdir)/config/depcomp
 am__maybe_remake_depfiles = depfiles
-am__depfiles_remade = ./$(DEPDIR)/model_integration.Po \
-	./$(DEPDIR)/modulo.Po ./$(DEPDIR)/recurrence.Po \
-	./$(DEPDIR)/time_calculus.Po
+am__depfiles_remade = ./$(DEPDIR)/int_div_example.Po \
+	./$(DEPDIR)/model_integration.Po ./$(DEPDIR)/modulo.Po \
+	./$(DEPDIR)/recurrence.Po ./$(DEPDIR)/time_calculus.Po
 am__mv = mv -f
 COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
 	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
@@ -248,15 +275,17 @@ am__v_FCLD_0 = @echo "  FCLD    " $@;
 am__v_FCLD_1 = 
 SOURCES = callback_test.f90 comp_weights.f90 $(duration_SOURCES) \
 	example.f90 example_hl.f90 $(iconatm_SOURCES) \
-	$(iconoce_SOURCES) iconoce_hl.f90 $(model_integration_SOURCES) \
-	$(modulo_SOURCES) output_control.f90 $(recurrence_SOURCES) \
-	repetitor.f90 simulate_iau.f90 tas.f90 $(test_dace_SOURCES) \
+	$(iconoce_SOURCES) iconoce_hl.f90 $(int_div_example_SOURCES) \
+	$(model_integration_SOURCES) $(modulo_SOURCES) \
+	output_control.f90 $(recurrence_SOURCES) repetitor.f90 \
+	simulate_iau.f90 tas.f90 $(test_dace_SOURCES) \
 	$(time_calculus_SOURCES) uniq.f90
 DIST_SOURCES = callback_test.f90 comp_weights.f90 $(duration_SOURCES) \
 	example.f90 example_hl.f90 $(iconatm_SOURCES) \
-	$(iconoce_SOURCES) iconoce_hl.f90 $(model_integration_SOURCES) \
-	$(modulo_SOURCES) output_control.f90 $(recurrence_SOURCES) \
-	repetitor.f90 simulate_iau.f90 tas.f90 $(test_dace_SOURCES) \
+	$(iconoce_SOURCES) iconoce_hl.f90 $(int_div_example_SOURCES) \
+	$(model_integration_SOURCES) $(modulo_SOURCES) \
+	output_control.f90 $(recurrence_SOURCES) repetitor.f90 \
+	simulate_iau.f90 tas.f90 $(test_dace_SOURCES) \
 	$(time_calculus_SOURCES) uniq.f90
 am__can_run_installinfo = \
   case $$AM_UPDATE_INFO_DIR in \
@@ -296,7 +325,7 @@ AUTOMAKE = @AUTOMAKE@
 AWK = @AWK@
 CC = @CC@
 CCDEPMODE = @CCDEPMODE@
-CFLAGS = @CFLAGS@
+CFLAGS = @CFLAGS@ $(am__append_1)
 CHECK_CFLAGS = @CHECK_CFLAGS@
 CHECK_CLIBS = @CHECK_CLIBS@
 CPP = @CPP@
@@ -438,7 +467,7 @@ top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 AM_CPPFLAGS = -I$(top_srcdir)/include
 AM_FCFLAGS = $(FCMODINC)$(top_builddir)/src
-LDADD = $(top_builddir)/src/libmtime.la
+LDADD = $(top_builddir)/src/libmtime.la $(am__append_2)
 AM_DEFAULT_SOURCE_EXT = .f90
 duration_SOURCES = duration.f90 mo_kind.f90
 iconatm_SOURCES = iconatm.f90 mo_event_manager.f90
@@ -448,6 +477,7 @@ modulo_SOURCES = modulo.c
 recurrence_SOURCES = recurrence.c
 test_dace_SOURCES = test_dace.f90 mo_event_manager.f90
 time_calculus_SOURCES = time_calculus.c
+int_div_example_SOURCES = int_div_example.c
 @FCMODUC_FALSE@mo_event_manager_mod = mo_event_manager.$(FCMODEXT)
 @FCMODUC_TRUE@mo_event_manager_mod = MO_EVENT_MANAGER.$(FCMODEXT)
 @FCMODUC_FALSE@mo_exception_mod = mo_exception.$(FCMODEXT)
@@ -536,6 +566,10 @@ iconoce_hl$(EXEEXT): $(iconoce_hl_OBJECTS) $(iconoce_hl_DEPENDENCIES) $(EXTRA_ic
 	@rm -f iconoce_hl$(EXEEXT)
 	$(AM_V_FCLD)$(FCLINK) $(iconoce_hl_OBJECTS) $(iconoce_hl_LDADD) $(LIBS)
 
+int_div_example$(EXEEXT): $(int_div_example_OBJECTS) $(int_div_example_DEPENDENCIES) $(EXTRA_int_div_example_DEPENDENCIES) 
+	@rm -f int_div_example$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(int_div_example_OBJECTS) $(int_div_example_LDADD) $(LIBS)
+
 model_integration$(EXEEXT): $(model_integration_OBJECTS) $(model_integration_DEPENDENCIES) $(EXTRA_model_integration_DEPENDENCIES) 
 	@rm -f model_integration$(EXEEXT)
 	$(AM_V_CCLD)$(LINK) $(model_integration_OBJECTS) $(model_integration_LDADD) $(LIBS)
@@ -582,6 +616,7 @@ mostlyclean-compile:
 distclean-compile:
 	-rm -f *.tab.c
 
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/int_div_example.Po@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/model_integration.Po@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/modulo.Po@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/recurrence.Po@am__quote@ # am--include-marker
@@ -759,7 +794,8 @@ clean-am: clean-generic clean-libtool clean-local clean-noinstPROGRAMS \
 	mostlyclean-am
 
 distclean: distclean-am
-		-rm -f ./$(DEPDIR)/model_integration.Po
+		-rm -f ./$(DEPDIR)/int_div_example.Po
+	-rm -f ./$(DEPDIR)/model_integration.Po
 	-rm -f ./$(DEPDIR)/modulo.Po
 	-rm -f ./$(DEPDIR)/recurrence.Po
 	-rm -f ./$(DEPDIR)/time_calculus.Po
@@ -818,7 +854,8 @@ install-ps-am:
 installcheck-am:
 
 maintainer-clean: maintainer-clean-am
-		-rm -f ./$(DEPDIR)/model_integration.Po
+		-rm -f ./$(DEPDIR)/int_div_example.Po
+	-rm -f ./$(DEPDIR)/model_integration.Po
 	-rm -f ./$(DEPDIR)/modulo.Po
 	-rm -f ./$(DEPDIR)/recurrence.Po
 	-rm -f ./$(DEPDIR)/time_calculus.Po
diff --git a/include/Makefile.in b/include/Makefile.in
index c9497081bcb7eb7c685731cd715c9fccc075c833..621a272cdd40c52311e13e9b73640c9cb901f52e 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -1,7 +1,7 @@
-# Makefile.in generated by automake 1.13.4 from Makefile.am.
+# Makefile.in generated by automake 1.16.2 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
 
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -15,7 +15,17 @@
 @SET_MAKE@
 
 VPATH = @srcdir@
-am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+    true; \
+  else \
+    false; \
+  fi; \
+}
 am__make_running_with_option = \
   case $${target_option-} in \
       ?) ;; \
@@ -79,8 +89,6 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 subdir = include
-DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
-	$(include_HEADERS)
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/acx_fc_module.m4 \
 	$(top_srcdir)/m4/acx_fc_pp.m4 $(top_srcdir)/m4/acx_lang_lib.m4 \
@@ -93,6 +101,8 @@ am__aclocal_m4_deps = $(top_srcdir)/m4/acx_fc_module.m4 \
 	$(top_srcdir)/m4/lt~obsolete.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
+DIST_COMMON = $(srcdir)/Makefile.am $(include_HEADERS) \
+	$(am__DIST_COMMON)
 mkinstalldirs = $(install_sh) -d
 CONFIG_HEADER = $(top_builddir)/config/config.h
 CONFIG_CLEAN_FILES =
@@ -166,6 +176,7 @@ am__define_uniq_tagged_files = \
   done | $(am__uniquify_input)`
 ETAGS = etags
 CTAGS = ctags
+am__DIST_COMMON = $(srcdir)/Makefile.in
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
@@ -348,14 +359,13 @@ $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__confi
 	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign include/Makefile'; \
 	$(am__cd) $(top_srcdir) && \
 	  $(AUTOMAKE) --foreign include/Makefile
-.PRECIOUS: Makefile
 Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
 	@case '$?' in \
 	  *config.status*) \
 	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
 	  *) \
-	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
-	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
 	esac;
 
 $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
@@ -393,10 +403,10 @@ uninstall-includeHEADERS:
 	@list='$(include_HEADERS)'; test -n "$(includedir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
 	dir='$(DESTDIR)$(includedir)'; $(am__uninstall_files_from_dir)
-doc-local:
-install-doc-local:
-man-local:
-install-man-local:
+doc-local: 
+install-doc-local: 
+man-local: 
+install-man-local: 
 
 ID: $(am__tagged_files)
 	$(am__define_uniq_tagged_files); mkid -fID $$unique
@@ -450,7 +460,10 @@ cscopelist-am: $(am__tagged_files)
 distclean-tags:
 	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
 
-distdir: $(DISTFILES)
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
 	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
 	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
 	list='$(DISTFILES)'; \
@@ -614,6 +627,8 @@ uninstall-am: uninstall-includeHEADERS
 	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
 	tags tags-am uninstall uninstall-am uninstall-includeHEADERS
 
+.PRECIOUS: Makefile
+
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
diff --git a/include/int_div.h b/include/int_div.h
index 480bc4f9cd05d304724b32dfa0af7d87cba60600..b1e20dadd81dfdb65ddc7560ebb1dbe2c0711517 100644
--- a/include/int_div.h
+++ b/include/int_div.h
@@ -25,8 +25,11 @@ typedef int64_t t_int;
 typedef t_int t_number[W_DIGITS + 1];
 
 
-void         number_init(t_number *x, const t_int val, const unsigned int m);
+#ifdef DEBUG
 void         print_number(const t_number x);
+#endif
+
+void         number_init(t_number *x, const t_int val, const unsigned int m);
 unsigned int length(const t_number x);
 void         product(t_number *x, const t_number y, const t_int k, const t_int b, int* ret);
 void         quotient(t_number *x, const t_number y, t_int k, const t_int b);
diff --git a/src/Makefile.in b/src/Makefile.in
index 3bc02028e2e953e5b1510cf6a28e9cdc6330f6c7..2c461dc4d048ea3ee1ef33dcb266ed8d83b77fe7 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -1,7 +1,7 @@
-# Makefile.in generated by automake 1.13.4 from Makefile.am.
+# Makefile.in generated by automake 1.16.2 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994-2013 Free Software Foundation, Inc.
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
 
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -16,7 +16,17 @@
 
 
 VPATH = @srcdir@
-am__is_gnu_make = test -n '$(MAKEFILE_LIST)' && test -n '$(MAKELEVEL)'
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+    true; \
+  else \
+    false; \
+  fi; \
+}
 am__make_running_with_option = \
   case $${target_option-} in \
       ?) ;; \
@@ -96,8 +106,6 @@ host_triplet = @host@
 # Therefore, we additionaly prepend AM_FCFLAGS with a dummy flag '$(FCMODINC).'.
 @ENABLE_OPENMP_TRUE@am__append_1 = $(FCMODINC). -Xcompiler $(OPENMP_FCFLAG)
 subdir = src
-DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
-	$(top_srcdir)/config/depcomp
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/acx_fc_module.m4 \
 	$(top_srcdir)/m4/acx_fc_pp.m4 $(top_srcdir)/m4/acx_lang_lib.m4 \
@@ -110,6 +118,7 @@ am__aclocal_m4_deps = $(top_srcdir)/m4/acx_fc_module.m4 \
 	$(top_srcdir)/m4/lt~obsolete.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
+DIST_COMMON = $(srcdir)/Makefile.am $(am__DIST_COMMON)
 mkinstalldirs = $(install_sh) -d
 CONFIG_HEADER = $(top_builddir)/config/config.h
 CONFIG_CLEAN_FILES =
@@ -171,7 +180,20 @@ am__v_at_0 = @
 am__v_at_1 = 
 DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)/config
 depcomp = $(SHELL) $(top_srcdir)/config/depcomp
-am__depfiles_maybe = depfiles
+am__maybe_remake_depfiles = depfiles
+am__depfiles_remade = ./$(DEPDIR)/int_div.Plo ./$(DEPDIR)/kepler.Plo \
+	./$(DEPDIR)/mtime_calendar.Plo \
+	./$(DEPDIR)/mtime_calendar360day.Plo \
+	./$(DEPDIR)/mtime_calendar365day.Plo \
+	./$(DEPDIR)/mtime_calendarGregorian.Plo \
+	./$(DEPDIR)/mtime_date.Plo ./$(DEPDIR)/mtime_datetime.Plo \
+	./$(DEPDIR)/mtime_eventBasic.Plo \
+	./$(DEPDIR)/mtime_eventHandling.Plo \
+	./$(DEPDIR)/mtime_eventList.Plo ./$(DEPDIR)/mtime_iso8601.Plo \
+	./$(DEPDIR)/mtime_julianDay.Plo ./$(DEPDIR)/mtime_time.Plo \
+	./$(DEPDIR)/mtime_timedelta.Plo \
+	./$(DEPDIR)/mtime_utilities.Plo ./$(DEPDIR)/orbit.Plo \
+	./$(DEPDIR)/vsop87.Plo
 am__mv = mv -f
 COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
 	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
@@ -235,6 +257,7 @@ am__define_uniq_tagged_files = \
   done | $(am__uniquify_input)`
 ETAGS = etags
 CTAGS = ctags
+am__DIST_COMMON = $(srcdir)/Makefile.in $(top_srcdir)/config/depcomp
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
@@ -483,14 +506,13 @@ $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__confi
 	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign src/Makefile'; \
 	$(am__cd) $(top_srcdir) && \
 	  $(AUTOMAKE) --foreign src/Makefile
-.PRECIOUS: Makefile
 Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
 	@case '$?' in \
 	  *config.status*) \
 	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
 	  *) \
-	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
-	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
 	esac;
 
 $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
@@ -546,38 +568,44 @@ mostlyclean-compile:
 distclean-compile:
 	-rm -f *.tab.c
 
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/int_div.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/kepler.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_calendar.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_calendar360day.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_calendar365day.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_calendarGregorian.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_date.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_datetime.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_eventBasic.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_eventHandling.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_eventList.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_iso8601.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_julianDay.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_time.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_timedelta.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_utilities.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/orbit.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/vsop87.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/int_div.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/kepler.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_calendar.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_calendar360day.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_calendar365day.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_calendarGregorian.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_date.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_datetime.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_eventBasic.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_eventHandling.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_eventList.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_iso8601.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_julianDay.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_time.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_timedelta.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mtime_utilities.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/orbit.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/vsop87.Plo@am__quote@ # am--include-marker
+
+$(am__depfiles_remade):
+	@$(MKDIR_P) $(@D)
+	@echo '# dummy' >$@-t && $(am__mv) $@-t $@
+
+am--depfiles: $(am__depfiles_remade)
 
 .c.o:
 @am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
 @am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c $<
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ $<
 
 .c.obj:
 @am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
 @am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c `$(CYGPATH_W) '$<'`
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
 
 .c.lo:
 @am__fastdepCC_TRUE@	$(AM_V_CC)$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
@@ -621,10 +649,10 @@ uninstall-nodist_includeHEADERS:
 	@list='$(nodist_include_HEADERS)'; test -n "$(includedir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
 	dir='$(DESTDIR)$(includedir)'; $(am__uninstall_files_from_dir)
-doc-local:
-install-doc-local:
-man-local:
-install-man-local:
+doc-local: 
+install-doc-local: 
+man-local: 
+install-man-local: 
 
 ID: $(am__tagged_files)
 	$(am__define_uniq_tagged_files); mkid -fID $$unique
@@ -678,7 +706,10 @@ cscopelist-am: $(am__tagged_files)
 distclean-tags:
 	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
 
-distdir: $(DISTFILES)
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
 	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
 	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
 	list='$(DISTFILES)'; \
@@ -753,7 +784,24 @@ clean-am: clean-generic clean-libLTLIBRARIES clean-libtool \
 	mostlyclean-am
 
 distclean: distclean-am
-	-rm -rf ./$(DEPDIR)
+		-rm -f ./$(DEPDIR)/int_div.Plo
+	-rm -f ./$(DEPDIR)/kepler.Plo
+	-rm -f ./$(DEPDIR)/mtime_calendar.Plo
+	-rm -f ./$(DEPDIR)/mtime_calendar360day.Plo
+	-rm -f ./$(DEPDIR)/mtime_calendar365day.Plo
+	-rm -f ./$(DEPDIR)/mtime_calendarGregorian.Plo
+	-rm -f ./$(DEPDIR)/mtime_date.Plo
+	-rm -f ./$(DEPDIR)/mtime_datetime.Plo
+	-rm -f ./$(DEPDIR)/mtime_eventBasic.Plo
+	-rm -f ./$(DEPDIR)/mtime_eventHandling.Plo
+	-rm -f ./$(DEPDIR)/mtime_eventList.Plo
+	-rm -f ./$(DEPDIR)/mtime_iso8601.Plo
+	-rm -f ./$(DEPDIR)/mtime_julianDay.Plo
+	-rm -f ./$(DEPDIR)/mtime_time.Plo
+	-rm -f ./$(DEPDIR)/mtime_timedelta.Plo
+	-rm -f ./$(DEPDIR)/mtime_utilities.Plo
+	-rm -f ./$(DEPDIR)/orbit.Plo
+	-rm -f ./$(DEPDIR)/vsop87.Plo
 	-rm -f Makefile
 distclean-am: clean-am distclean-compile distclean-generic \
 	distclean-tags
@@ -809,7 +857,24 @@ install-ps-am:
 installcheck-am:
 
 maintainer-clean: maintainer-clean-am
-	-rm -rf ./$(DEPDIR)
+		-rm -f ./$(DEPDIR)/int_div.Plo
+	-rm -f ./$(DEPDIR)/kepler.Plo
+	-rm -f ./$(DEPDIR)/mtime_calendar.Plo
+	-rm -f ./$(DEPDIR)/mtime_calendar360day.Plo
+	-rm -f ./$(DEPDIR)/mtime_calendar365day.Plo
+	-rm -f ./$(DEPDIR)/mtime_calendarGregorian.Plo
+	-rm -f ./$(DEPDIR)/mtime_date.Plo
+	-rm -f ./$(DEPDIR)/mtime_datetime.Plo
+	-rm -f ./$(DEPDIR)/mtime_eventBasic.Plo
+	-rm -f ./$(DEPDIR)/mtime_eventHandling.Plo
+	-rm -f ./$(DEPDIR)/mtime_eventList.Plo
+	-rm -f ./$(DEPDIR)/mtime_iso8601.Plo
+	-rm -f ./$(DEPDIR)/mtime_julianDay.Plo
+	-rm -f ./$(DEPDIR)/mtime_time.Plo
+	-rm -f ./$(DEPDIR)/mtime_timedelta.Plo
+	-rm -f ./$(DEPDIR)/mtime_utilities.Plo
+	-rm -f ./$(DEPDIR)/orbit.Plo
+	-rm -f ./$(DEPDIR)/vsop87.Plo
 	-rm -f Makefile
 maintainer-clean-am: distclean-am maintainer-clean-generic
 
@@ -834,9 +899,9 @@ uninstall-am: uninstall-libLTLIBRARIES uninstall-nodist_includeHEADERS
 
 .MAKE: install-am install-strip
 
-.PHONY: CTAGS GTAGS TAGS all all-am check check-am clean clean-generic \
-	clean-libLTLIBRARIES clean-libtool cscopelist-am ctags \
-	ctags-am distclean distclean-compile distclean-generic \
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
+	clean-generic clean-libLTLIBRARIES clean-libtool cscopelist-am \
+	ctags ctags-am distclean distclean-compile distclean-generic \
 	distclean-libtool distclean-tags distdir doc-am doc-local dvi \
 	dvi-am html html-am info info-am install install-am \
 	install-data install-data-am install-doc-am install-doc-local \
@@ -852,6 +917,8 @@ uninstall-am: uninstall-libLTLIBRARIES uninstall-nodist_includeHEADERS
 	uninstall-am uninstall-libLTLIBRARIES \
 	uninstall-nodist_includeHEADERS
 
+.PRECIOUS: Makefile
+
 
 $(mtime_c_bindings_mod): mtime_c_bindings.lo
 $(mtime_constants_mod): mtime_constants.lo
diff --git a/test/Makefile.in b/test/Makefile.in
index a5d9f22fd86c9727305da88ef2affc5b32ead587..28542a1038a17fba5184cfc5dab3463088bf35d1 100644
--- a/test/Makefile.in
+++ b/test/Makefile.in
@@ -1,7 +1,7 @@
-# Makefile.in generated by automake 1.16.1 from Makefile.am.
+# Makefile.in generated by automake 1.16.2 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994-2018 Free Software Foundation, Inc.
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
 
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,