diff --git a/.gitignore b/.gitignore
index 45c01a9a..23285fed 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,9 @@ defs.mak
 Depend
 config.cache
 config.log
+scripts/config.log
+scripts/config.status
+scripts/defs.mak
 *.o
 *.so
 *~
diff --git a/VERSION b/VERSION
index 35faef8c..e5db82ae 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-8.2.12
+8.2.14
diff --git a/scripts/configure b/scripts/configure
index 8119a1f0..b7e2bb24 100755
--- a/scripts/configure
+++ b/scripts/configure
@@ -672,6 +672,7 @@ GCORE
 EGREP
 GREP
 PYTHON3
+M4
 RANLIB
 INSTALL_DATA
 INSTALL_SCRIPT
@@ -4028,6 +4029,56 @@ else
 fi
 
 
+for ac_prog in gm4 gnum4 m4
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_M4+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $M4 in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_M4="$M4" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_M4="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+M4=$ac_cv_path_M4
+if test -n "$M4"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $M4" >&5
+$as_echo "$M4" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$M4" && break
+done
+test -n "$M4" || M4="no"
+
+if test x$M4 = xno; then
+  as_fn_error $? "M4 is required" "$LINENO" 5
+fi
+
 # Extract the first word of "python3", so it can be a program name with args.
 set dummy python3; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
diff --git a/scripts/configure.in b/scripts/configure.in
index 8568f639..e0727e4b 100644
--- a/scripts/configure.in
+++ b/scripts/configure.in
@@ -28,6 +28,12 @@ AC_ISC_POSIX
 AC_PROG_INSTALL
 AC_PROG_RANLIB
 
+dnl GNU M4 is preferred due to some of the option switches.
+AC_PATH_PROGS([M4], [gm4 gnum4 m4], [no])
+if test x$M4 = xno; then
+  AC_MSG_ERROR([M4 is required])
+fi
+
 dnl Python3 is preferred for running the preprocessor script
 dnl but CPP can be used instead.
 AC_PATH_PROG([PYTHON3], [python3], [no])
diff --git a/scripts/preproc.py b/scripts/preproc.py
index 8b1cadf2..da69f352 100755
--- a/scripts/preproc.py
+++ b/scripts/preproc.py
@@ -1,4 +1,4 @@
-#!/ef/efabless/opengalaxy/venv/bin/python3
+#!/bin/env python3
 #--------------------------------------------------------------------
 #
 # preproc.py