11 files changed, 0 insertions, 688 deletions
diff --git a/build-aux/m4/debug.m4 b/build-aux/m4/debug.m4
deleted file mode 100644
index ec45e2de..00000000
--- a/build-aux/m4/debug.m4
+++ /dev/null
@@ -1,94 +0,0 @@
-##                                                           -*- Autoconf -*-
-## debug.m4 -- massage compiler flags for debugging/optimisation
-##
-## Copyright (C) 2000-2001, 2003, 2005-2007, 2010, 2013-2014, 2017 Free
-## Software Foundation, Inc.
-## Copyright (C) 1999-2000 Ralf S. Engelschall
-## Written by <rse@engelschall.com>
-## Modified for M4 by Gary V. Vaughan <gary@gnu.org>
-##
-## This file is part of GNU M4.
-##
-## GNU M4 is free software: you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation, either version 3 of the License, or
-## (at your option) any later version.
-##
-## GNU M4 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 General Public License for more details.
-##
-## You should have received a copy of the GNU General Public License
-## along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# serial 9
-
-# M4_CHECK_DEBUGGING
-# ------------------
-# Debugging Support
-AC_DEFUN([M4_CHECK_DEBUGGING],
-[AC_REQUIRE([AC_PROG_CC])
-AC_ARG_ENABLE([debug], [AS_HELP_STRING([--enable-debug],
-                           [build for debugging [default=no]])])
-AC_MSG_CHECKING([for compilation debug mode])
-AC_MSG_RESULT([${enable_debug-no}])
-
-: ${rm=rm -f}
-: ${RM=rm -f}
-
-set dummy $CC
-compiler="${compiler-[$]2}"
-test -n "$rm" || rm="rm -f"
-
-if test "X$enable_debug" = Xyes; then
-  AC_DISABLE_SHARED
-  AC_DEFINE([DEBUG], [1],
-      [Define this to enable additional runtime debugging])
-  M4_default_preload="m4 traditional gnu load \
-import modtest mpeval shadow stdlib time"
-  if test "$GCC" = yes; then
-    case "$CFLAGS" in
-      *-O* ) CFLAGS=`echo $CFLAGS | $SED 's/-O[[^ ]]* / /;s/-O[[^ ]]*$//'` ;;
-    esac
-    case "$CFLAGS" in
-        *-g* ) ;;
-         * ) AC_LIBTOOL_COMPILER_OPTION([if $compiler accepts -ggdb3],
-                 [M4_cv_prog_compiler_ggdb3],
-                 [-ggdb3 -c conftest.$ac_ext], [],
-                 [CFLAGS="$CFLAGS -ggdb3"],
-               [CFLAGS="$CFLAGS -g"])
-             ;;
-    esac
-    CFLAGS="$CFLAGS -Wall"
-    WMORE="-Wshadow -Wpointer-arith -Wcast-align -Wnested-externs"
-    WMORE="$WMORE -Wmissing-prototypes -Wmissing-declarations -Winline"
-    AC_LIBTOOL_COMPILER_OPTION([if $compiler accepts $WMORE],
-        [M4_cv_prog_compiler_warning_flags],
-        [$WMORE -c conftest.$ac_ext], [],
-        [CFLAGS="$CFLAGS $WMORE"])
-
-    AC_LIBTOOL_COMPILER_OPTION([if $compiler accepts -Wno-long-long],
-        [M4_cv_prog_compiler_wnolonglong],
-        [-Wno-long-long -c conftest.$ac_ext], [],
-        [CFLAGS="$CFLAGS -Wno-long-long"])
-  else
-    case "$CFLAGS" in
-        *-g* ) ;;
-           * ) CFLAGS="$CFLAGS -g" ;;
-    esac
-  fi
-else
-  AC_ENABLE_SHARED
-  case "$CFLAGS" in
-    *-g* ) CFLAGS=`echo "$CFLAGS" |\
-               $SED -e 's/ -g / /g;s/ -g$//;s/^-g //g;s/^-g$//'`
-           ;;
-  esac
-  case "$CXXFLAGS" in
-    *-g* ) CXXFLAGS=`echo "$CXXFLAGS" |\
-               $SED -e 's/ -g / /g;s/ -g$//;s/^-g //g;s/^-g$//'`
-           ;;
-  esac
-fi
-])# M4_CHECK_DEBUGGING
diff --git a/build-aux/m4/gmp.m4 b/build-aux/m4/gmp.m4
deleted file mode 100644
index 0e60bdcc..00000000
--- a/build-aux/m4/gmp.m4
+++ /dev/null
@@ -1,77 +0,0 @@
-## -*- Autoconf -*-
-## Copyright (C) 2000-2001, 2003, 2006-2008, 2010, 2013-2014, 2017 Free
-## Software Foundation, Inc.
-##
-## This file is part of GNU M4.
-##
-## GNU M4 is free software: you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
-## the Free Software Foundation, either version 3 of the License, or
-## (at your option) any later version.
-##
-## GNU M4 is distributed in the hope that it will be useful,
-## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-## GNU General Public License for more details.
-##
-## You should have received a copy of the GNU General Public License
-## along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# serial 10
-
-m4_define([_M4_LIB_GMP],
-[AC_ARG_WITH([gmp],
-  [AS_HELP_STRING([--without-gmp],
-    [don't use GNU multiple precision arithmetic library])],
-[use_gmp=$withval], [use_gmp=yes])
-
-case $use_gmp:$LIBADD_GMP:$ac_cv_header_gmp_h in
-  no:*)
-    M4_cv_using_lib_gmp=no
-    ;;
-  *::yes)
-    AC_MSG_WARN([gmp library not found or does not appear to work
-                 but `gmp.h' is present])
-    M4_cv_using_lib_gmp=no
-    ;;
-  *:-lgmp:no)
-    AC_MSG_WARN([gmp works but `gmp.h' is missing])
-    M4_cv_using_lib_gmp=no
-    ;;
-  yes:*:yes)
-    M4_cv_using_lib_gmp=yes
-    ;;
-  *)
-    M4_cv_using_lib_gmp=no
-    AC_MSG_WARN([could not detect gmp library])
-    ;;
-esac
-])# _M4_LIB_GMP
-
-
-AC_DEFUN([M4_LIB_GMP],
-[AC_PREREQ([2.56])dnl We use the new compiler based header checking in 2.56
-AC_CHECK_HEADERS([gmp.h], [], [], [AC_INCLUDES_DEFAULT])
-m4_pattern_allow([^M4_gmp_save_LIBS$])
-# Some versions of gmp provide mpq_init as a macro, so we need to
-# include the header file, otherwise the detection will fail.
-M4_gmp_save_LIBS="$LIBS"
-LIBS="$LIBS -lgmp"
-AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if HAVE_GMP_H
-#  include <gmp.h>
-#endif]],
-  [[mpq_t n; mpq_init (n);]])],
-  [LIBADD_GMP=-lgmp])
-LIBS=$M4_gmp_save_LIBS
-AC_SUBST([LIBADD_GMP])
-
-_M4_LIB_GMP
-
-# Don't try to link in libgmp if we are not using it after the last call
-if test "$M4_cv_using_lib_gmp" = yes; then
-  AC_DEFINE([USE_GMP], [1],
-    [Define to 1 if using the GNU multiple precision library.])
-fi
-
-AC_SUBST([USE_GMP], [$M4_cv_using_lib_gmp])
-])# M4_LIB_GMP
diff --git a/build-aux/m4/gnulib-cache.m4 b/build-aux/m4/gnulib-cache.m4
deleted file mode 100644
index 667d2ff9..00000000
--- a/build-aux/m4/gnulib-cache.m4
+++ /dev/null
@@ -1,120 +0,0 @@
-# Copyright (C) 2002-2017 Free Software Foundation, Inc.
-#
-# This file is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3 of the License, or
-# (at your option) any later version.
-#
-# This file 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 General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this file.  If not, see <http://www.gnu.org/licenses/>.
-#
-# As a special exception to the GNU General Public License,
-# this file may be distributed as part of a program that
-# contains a configuration script generated by Autoconf, under
-# the same distribution terms as the rest of that program.
-#
-# Generated by gnulib-tool.
-#
-# This file represents the specification of how gnulib-tool is used.
-# It acts as a cache: It is written and read by gnulib-tool.
-# In projects that use version control, this file is meant to be put under
-# version control, like the configure.ac and various Makefile.am files.
-
-
-# Specification in the form of a command-line invocation:
-#   gnulib-tool --import --local-dir=build-aux/gl --lib=libgnu --source-base=m4/gnu --m4-base=build-aux/m4 --doc-base=doc --tests-base=tests/gnu --aux-dir=build-aux --with-tests --with-c++-tests --no-conditional-dependencies --libtool --macro-prefix=M4 assert autobuild avltree-oset binary-io bitrotate clean-temp cloexec close-stream closein config-h configmake dirname error execute fclose fdl-1.3 fflush filenamecat flexmember fopen fopen-safer freadptr freadseek fseeko gendocs gettext git-version-gen gitlog-to-changelog gnumakefile gnupload gpl-3.0 intprops inttypes maintainer-makefile manywarnings memchr2 memcmp2 memmem mkstemp obstack obstack-printf-posix progname propername quote regex regexprops-generic rename setenv sigpipe snprintf-posix spawn-pipe sprintf-posix stdbool stdlib-safer strnlen strtod tempname unlocked-io unsetenv update-copyright vasnprintf-posix verify verror wait-process xalloc xalloc-die xmemdup0 xoset xprintf-posix xstrndup xvasprintf-posix
-
-# Specification in the form of a few gnulib-tool.m4 macro invocations:
-gl_LOCAL_DIR([build-aux/gl])
-gl_MODULES([
-  assert
-  autobuild
-  avltree-oset
-  binary-io
-  bitrotate
-  clean-temp
-  cloexec
-  close-stream
-  closein
-  config-h
-  configmake
-  dirname
-  error
-  execute
-  fclose
-  fdl-1.3
-  fflush
-  filenamecat
-  flexmember
-  fopen
-  fopen-safer
-  freadptr
-  freadseek
-  fseeko
-  gendocs
-  gettext
-  git-version-gen
-  gitlog-to-changelog
-  gnumakefile
-  gnupload
-  gpl-3.0
-  intprops
-  inttypes
-  maintainer-makefile
-  manywarnings
-  memchr2
-  memcmp2
-  memmem
-  mkstemp
-  obstack
-  obstack-printf-posix
-  progname
-  propername
-  quote
-  regex
-  regexprops-generic
-  rename
-  setenv
-  sigpipe
-  snprintf-posix
-  spawn-pipe
-  sprintf-posix
-  stdbool
-  stdlib-safer
-  strnlen
-  strtod
-  tempname
-  unlocked-io
-  unsetenv
-  update-copyright
-  vasnprintf-posix
-  verify
-  verror
-  wait-process
-  xalloc
-  xalloc-die
-  xmemdup0
-  xoset
-  xprintf-posix
-  xstrndup
-  xvasprintf-posix
-])
-gl_WITH_CXX_TESTS
-gl_AVOID([])
-gl_SOURCE_BASE([m4/gnu])
-gl_M4_BASE([build-aux/m4])
-gl_PO_BASE([])
-gl_DOC_BASE([doc])
-gl_TESTS_BASE([tests/gnu])
-gl_WITH_TESTS
-gl_LIB([libgnu])
-gl_MAKEFILE_NAME([])
-gl_LIBTOOL
-gl_MACRO_PREFIX([M4])
-gl_PO_DOMAIN([])
-gl_WITNESS_C_MACRO([])
diff --git a/build-aux/m4/m4-error.m4 b/build-aux/m4/m4-error.m4
deleted file mode 100644
index ba9907c1..00000000
--- a/build-aux/m4/m4-error.m4
+++ /dev/null
@@ -1,41 +0,0 @@
-#                                                            -*- Autoconf -*-
-# m4-error.m4 -- Use the installed version of error.h if available.
-# Written by Gary V. Vaughan <gary@gnu.org>
-#
-# Copyright (C) 2003-2004, 2006-2007, 2010, 2013-2014, 2017 Free
-# Software Foundation, Inc.
-#
-# This file is part of GNU M4.
-#
-# GNU M4 is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNU M4 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 General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# serial 4
-
-# M4_ERROR
-# --------
-# Use the installed version of error.h if available.
-AC_DEFUN([M4_ERROR],
-[AC_BEFORE([gl_ERROR], [M4_ERROR])
-
-AC_CHECK_HEADERS([error.h],
-    [ERROR_H=""], [ERROR_H="error.h"], [AC_INCLUDES_DEFAULT])
-AC_SUBST([ERROR_H])
-
-if test $ac_cv_header_error_h = yes; then
-  INCLUDE_ERROR_H='#include <error.h>'
-else
-  INCLUDE_ERROR_H='#include <gnu/error.h>'
-fi
-AC_SUBST([INCLUDE_ERROR_H])
-])# M4_ERROR
diff --git a/build-aux/m4/m4-getopt.m4 b/build-aux/m4/m4-getopt.m4
deleted file mode 100644
index 2799e38c..00000000
--- a/build-aux/m4/m4-getopt.m4
+++ /dev/null
@@ -1,35 +0,0 @@
-#                                                            -*- Autoconf -*-
-# m4-getopt.m4 -- Use the installed version of getopt.h if available.
-# Written by Gary V. Vaughan <gary@gnu.org>
-#
-# Copyright (C) 2005-2007, 2009-2010, 2013-2014, 2017 Free Software
-# Foundation, Inc.
-#
-# This file is part of GNU M4.
-#
-# GNU M4 is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNU M4 is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# serial 3
-
-# M4_GETOPT
-# ---------
-# Use the installed version of getopt.h if available.
-AC_DEFUN([M4_GETOPT],
-[
-  m4_divert_text([INIT_PREPARE], [M4_replace_getopt=])
-  m4_pushdef([AC_LIBOBJ], [M4_replace_getopt=:])
-  AC_REQUIRE([gl_FUNC_GETOPT_GNU])
-  m4_popdef([AC_LIBOBJ])
-  AM_CONDITIONAL([GETOPT], [test -n "$M4_replace_getopt"])
-])# M4_GETOPT
diff --git a/build-aux/m4/m4-gettext.m4 b/build-aux/m4/m4-gettext.m4
deleted file mode 100644
index 65c12995..00000000
--- a/build-aux/m4/m4-gettext.m4
+++ /dev/null
@@ -1,35 +0,0 @@
-#                                                            -*- Autoconf -*-
-# m4-gettext.m4 -- Use the installed version of GNU gettext if available.
-# Written by Gary V. Vaughan <gary@gnu.org>
-#
-# Copyright (C) 2003-2004, 2006-2007, 2010, 2013-2014, 2017 Free
-# Software Foundation, Inc.
-#
-# This file is part of GNU M4.
-#
-# GNU M4 is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNU M4 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 General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# serial 3
-
-# M4_GNU_GETTEXT
-# --------------
-# Use the installed version of GNU gettext if available.
-AC_DEFUN([M4_GNU_GETTEXT],
-[AC_BEFORE([AM_GNU_GETTEXT], [M4_GNU_GETTEXT])
-AC_CHECK_HEADERS([gettext.h],
-    [GETTEXT_H=""], [GETTEXT_H="gettext.h"], [AC_INCLUDES_DEFAULT])
-AC_SUBST([GETTEXT_H])
-
-AC_CONFIG_FILES([po/Makefile.in])
-])# M4_GNU_GETTEXT
diff --git a/build-aux/m4/m4-obstack.m4 b/build-aux/m4/m4-obstack.m4
deleted file mode 100644
index db31b01e..00000000
--- a/build-aux/m4/m4-obstack.m4
+++ /dev/null
@@ -1,50 +0,0 @@
-#                                                            -*- Autoconf -*-
-# m4-obstack.m4 -- the libc supplied version of obstacks if available.
-#
-# Copyright (C) 2000-2001, 2003-2004, 2006-2007, 2010, 2013-2014, 2017
-# Free Software Foundation, Inc.
-# Written by Gary V. Vaughan <gary@gnu.org>
-#
-# This file is part of GNU M4.
-#
-# GNU M4 is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNU M4 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 General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# serial 10
-
-# M4_OBSTACK
-# ----------
-# Use the libc supplied version of obstacks if available.
-AC_DEFUN([M4_OBSTACK],
-[AC_PREREQ([2.56])dnl We use the compiler based header checking in 2.56
-AC_BEFORE([gl_OBSTACK], [M4_OBSTACK])
-AC_ARG_WITH([included-obstack],
-    [AS_HELP_STRING([--with-included-obstack],
-                    [use the obstack implementation included here])])
-
-AC_CHECK_HEADERS([obstack.h], [], [], [AC_INCLUDES_DEFAULT])
-
-if test "x${with_included_obstack-no}" != xno; then
-  ac_cv_func_obstack=no
-fi
-
-OBSTACK_H=
-if test $ac_cv_func_obstack = yes; then
-  INCLUDE_OBSTACK_H='#include <obstack.h>'
-else
-  INCLUDE_OBSTACK_H='#include <gnu/obstack.h>'
-  OBSTACK_H=obstack.h
-fi
-AC_SUBST([OBSTACK_H])
-AC_SUBST([INCLUDE_OBSTACK_H])
-])# M4_FUNC_OBSTACK
diff --git a/build-aux/m4/m4-regex.m4 b/build-aux/m4/m4-regex.m4
deleted file mode 100644
index c1e8acdd..00000000
--- a/build-aux/m4/m4-regex.m4
+++ /dev/null
@@ -1,39 +0,0 @@
-#                                                            -*- Autoconf -*-
-# m4-regex.m4 -- Use the installed regex if it is good enough.
-# Written by Gary V. Vaughan <gary@gnu.org>
-#
-# Copyright (C) 2003-2004, 2006-2007, 2010, 2013-2014, 2017 Free
-# Software Foundation, Inc.
-#
-# This file is part of GNU M4.
-#
-# GNU M4 is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNU M4 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 General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# serial 4
-
-# M4_REGEX([path/to/regex.c])
-# ---------------------------
-# Use the installed regex if it is good enough.
-AC_DEFUN([M4_REGEX],
-[AC_BEFORE([gl_REGEX], [M4_REGEX])
-if test $ac_use_included_regex = no; then
-  INCLUDE_REGEX_H='#include <regex.h>'
-  REGEX_H=
-else
-  INCLUDE_REGEX_H='#include <gnu/regex.h>'
-  REGEX_H=regex.h
-fi
-AC_SUBST([REGEX_H])
-AC_SUBST([INCLUDE_REGEX_H])
-])# M4_REGEX
diff --git a/build-aux/m4/m4-rename.m4 b/build-aux/m4/m4-rename.m4
deleted file mode 100644
index faafd1ba..00000000
--- a/build-aux/m4/m4-rename.m4
+++ /dev/null
@@ -1,46 +0,0 @@
-#                                                            -*- Autoconf -*-
-# m4-rename.m4 -- Test the abilities of rename.
-# Written by Eric Blake <ebb9@byu.net>
-#
-# Copyright (C) 2008, 2010, 2013-2014, 2017 Free Software Foundation,
-# Inc.
-#
-# This file is part of GNU M4.
-#
-# GNU M4 is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNU M4 is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# serial 1
-
-# M4_RENAME
-# ---------
-# Detect platforms like mingw where rename can't move open files.
-AC_DEFUN([M4_RENAME],
-[AC_CACHE_CHECK([whether an open file can be renamed],
-  [M4_cv_func_rename_open_file_works],
-  [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
-      [FILE *f = fopen ("conftest.1", "w+");
-       int result = rename ("conftest.1", "conftest.2");
-       fclose (f); remove ("conftest.1"); remove ("conftest.2");
-       return result;])],
-    [M4_cv_func_rename_open_file_works=yes],
-    [M4_cv_func_rename_open_file_works=no],
-    [M4_cv_func_rename_open_file_works='guessing no'])])
-if test "$M4_cv_func_rename_open_file_works" = yes ; then
-  M4_rename_open_works=1
-else
-  M4_rename_open_works=0
-fi
-AC_DEFINE_UNQUOTED([RENAME_OPEN_FILE_WORKS], [$M4_rename_open_works],
-  [Define to 1 if a file can be renamed while open, or to 0 if not.])
-])
diff --git a/build-aux/m4/m4-syscmd.m4 b/build-aux/m4/m4-syscmd.m4
deleted file mode 100644
index 2b4beb56..00000000
--- a/build-aux/m4/m4-syscmd.m4
+++ /dev/null
@@ -1,60 +0,0 @@
-#                                                            -*- Autoconf -*-
-# m4-syscmd.m4 -- Allow choice of syscmd shell.
-# Written by Eric Blake <ebb9@byu.net>
-#
-# Copyright (C) 2009-2010, 2013-2014, 2017 Free Software Foundation,
-# Inc.
-#
-# This file is part of GNU M4.
-#
-# GNU M4 is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNU M4 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 General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# serial 1
-
-# M4_SYSCMD
-# ---------
-# Allow user to choose different shell than /bin/sh for e?syscmd.
-AC_DEFUN([M4_SYSCMD],
-[AC_MSG_CHECKING([[which shell to use for syscmd]])
-AC_ARG_WITH([syscmd-shell],
-  [AS_HELP_STRING([--with-syscmd-shell], [shell used by syscmd [/bin/sh]])],
-  [case $withval in
-    yes[)] with_syscmd_shell=no;;
-   esac], [with_syscmd_shell=no])
-if test "$with_syscmd_shell" = no ; then
-  with_syscmd_shell=/bin/sh
-  if test "$cross_compiling" != yes ; then
-dnl Give mingw a default that is more likely to be available.
-    AS_IF([AS_EXECUTABLE_P([/bin/sh$EXEEXT])], [],
-      [if (cmd /c) 2>/dev/null; then with_syscmd_shell=cmd; fi])
-dnl Too bad _AS_PATH_WALK is not public.
-    M4_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-    for M4_dir in `if (command -p getconf PATH) 2>/dev/null ; then
- command -p getconf PATH
-      else
- echo "/bin$PATH_SEPARATOR$PATH"
-      fi`
-    do
-      IFS=$M4_save_IFS
-      test -z "$M4_dir" && continue
-      AS_EXECUTABLE_P(["$M4_dir/sh"]) \
- && { with_syscmd_shell=$M4_dir/sh; break; }
-    done
-    IFS=$M4_save_IFS
-  fi
-fi
-AC_MSG_RESULT([$with_syscmd_shell])
-AC_DEFINE_UNQUOTED([M4_SYSCMD_SHELL], ["$with_syscmd_shell"],
-  [Shell used by syscmd and esyscmd, must accept -c argument.])
-])
diff --git a/build-aux/m4/stackovf.m4 b/build-aux/m4/stackovf.m4
deleted file mode 100644
index 104f737a..00000000
--- a/build-aux/m4/stackovf.m4
+++ /dev/null
@@ -1,91 +0,0 @@
-#                                                            -*- Autoconf -*-
-# stackovf.m4 -- how do we deal with stack overflow?
-#
-# Copyright (C) 2000, 2003, 2006-2007, 2010, 2013-2014, 2017 Free
-# Software Foundation, Inc.
-#
-# This file is part of GNU M4.
-#
-# GNU M4 is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# GNU M4 is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# serial 7
-
-# M4_SYS_STACKOVF
-# ---------------
-AC_DEFUN([M4_SYS_STACKOVF],
-[AC_PREREQ([2.60])dnl We use the _ONCE variants
-AC_REQUIRE([AC_TYPE_SIGNAL])dnl
-
-AC_CHECK_HEADERS_ONCE([siginfo.h])
-AC_CHECK_FUNCS_ONCE([sigaction sigaltstack sigstack sigvec])
-AC_CHECK_MEMBERS([stack_t.ss_sp], [], [],
-[[#include <signal.h>
-#if HAVE_SIGINFO_H
-# include <siginfo.h>
-#endif
-]])
-
-# Code from Jim Avera <jima@netcom.com>.
-# stackovf.c requires:
-#  1. Either sigaction with SA_ONSTACK, or sigvec with SV_ONSTACK
-#  2. Either sigaltstack or sigstack
-#  3. getrlimit, including support for RLIMIT_STACK
-AC_CACHE_CHECK([if stack overflow is detectable], [M4_cv_use_stackovf],
-[M4_cv_use_stackovf=no
-if test "$ac_cv_func_sigaction" = yes || test "$ac_cv_func_sigvec" = yes; then
-  if test "$ac_cv_func_sigaltstack" = yes || test "$ac_cv_func_sigstack" = yes; then
-    AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/time.h>
-#include <sys/resource.h>
-#include <signal.h>
-]], [[struct rlimit r; getrlimit (RLIMIT_STACK, &r);
-#if (!defined HAVE_SIGACTION || !defined SA_ONSTACK) \
-    && (!defined HAVE_SIGVEC || !defined SV_ONSTACK)
-choke me /* SA_ONSTACK and/or SV_ONSTACK are not defined */
-#endif
-]])], [M4_cv_use_stackovf=yes])
-  fi
-fi])
-
-AM_CONDITIONAL([STACKOVF], [test "$M4_cv_use_stackovf" = yes])
-if test "$M4_cv_use_stackovf" = yes; then
-  AC_DEFINE([USE_STACKOVF], [1],
-    [Define to 1 if using stack overflow detection.])
-  AC_CHECK_TYPES([rlim_t], [],
-    [AC_DEFINE([rlim_t], [int],
-      [Define to int if rlim_t is not defined in sys/resource.h])],
-    [[#include <sys/resource.h>
-]])
-  AC_CHECK_TYPES([stack_t], [],
-    [AC_DEFINE([stack_t], [struct sigaltstack],
-      [Define to struct sigaltstack if stack_t is not in signal.h])],
-    [[#include <signal.h>
-]])
-  AC_CHECK_TYPES([sigcontext], [], [], [[#include <signal.h>
-]])
-  AC_CHECK_TYPES([siginfo_t], [], [], [[#include <signal.h>
-#if HAVE_SIGINFO_H
-# include <siginfo.h>
-#endif
-]])
-  AC_CHECK_MEMBERS([struct sigaction.sa_sigaction], [], [],
-[[#include <signal.h>
-]])
-
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>
-]],
-            [[struct sigaltstack x; x.ss_base = 0;]])],
-            [AC_DEFINE([ss_sp], [ss_base],
-            [Define to ss_base if stack_t has ss_base instead of ss_sp.])])
-fi
-])# M4_SYS_STACKOVF