diff --git a/configure b/configure
index bbdb423..996b5d9 100755
--- a/configure
+++ b/configure
@@ -607,10 +607,10 @@ PACKAGE_URL=''
 
 ac_subst_vars='LTLIBOBJS
 LIBOBJS
-GIT
-AUTOCONF
-PYTHON3
 MAKE
+NPM
+NODE
+GIT
 target_alias
 host_alias
 build_alias
@@ -1711,150 +1711,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
-for ac_prog in make
-do
-  # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-printf %s "checking for $ac_word... " >&6; }
-if test ${ac_cv_prog_MAKE+y}
-then :
-  printf %s "(cached) " >&6
-else case e in #(
-  e) if test -n "$MAKE"; then
-  ac_cv_prog_MAKE="$MAKE" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  case $as_dir in #(((
-    '') as_dir=./ ;;
-    */) ;;
-    *) as_dir=$as_dir/ ;;
-  esac
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
-    ac_cv_prog_MAKE="$ac_prog"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-fi ;;
-esac
-fi
-MAKE=$ac_cv_prog_MAKE
-if test -n "$MAKE"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MAKE" >&5
-printf "%s\n" "$MAKE" >&6; }
-else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-fi
-
-
-  test -n "$MAKE" && break
-done
-
-for ac_prog in npm
-do
-  # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-printf %s "checking for $ac_word... " >&6; }
-if test ${ac_cv_prog_PYTHON3+y}
-then :
-  printf %s "(cached) " >&6
-else case e in #(
-  e) if test -n "$PYTHON3"; then
-  ac_cv_prog_PYTHON3="$PYTHON3" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  case $as_dir in #(((
-    '') as_dir=./ ;;
-    */) ;;
-    *) as_dir=$as_dir/ ;;
-  esac
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
-    ac_cv_prog_PYTHON3="$ac_prog"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-fi ;;
-esac
-fi
-PYTHON3=$ac_cv_prog_PYTHON3
-if test -n "$PYTHON3"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $PYTHON3" >&5
-printf "%s\n" "$PYTHON3" >&6; }
-else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-fi
-
-
-  test -n "$PYTHON3" && break
-done
-
-for ac_prog in autoconf
-do
-  # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-printf %s "checking for $ac_word... " >&6; }
-if test ${ac_cv_prog_AUTOCONF+y}
-then :
-  printf %s "(cached) " >&6
-else case e in #(
-  e) if test -n "$AUTOCONF"; then
-  ac_cv_prog_AUTOCONF="$AUTOCONF" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  case $as_dir in #(((
-    '') as_dir=./ ;;
-    */) ;;
-    *) as_dir=$as_dir/ ;;
-  esac
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
-    ac_cv_prog_AUTOCONF="$ac_prog"
-    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-fi ;;
-esac
-fi
-AUTOCONF=$ac_cv_prog_AUTOCONF
-if test -n "$AUTOCONF"; then
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $AUTOCONF" >&5
-printf "%s\n" "$AUTOCONF" >&6; }
-else
-  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-fi
-
-
-  test -n "$AUTOCONF" && break
-done
-
 for ac_prog in git
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
@@ -1902,7 +1758,174 @@ fi
 
   test -n "$GIT" && break
 done
+test -n "$GIT" || GIT="no"
 
+if test "$GIT" == "no"
+then :
+  as_fn_error $? "install Git, before continuing." "$LINENO" 5
+fi
+
+for ac_prog in node
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_NODE+y}
+then :
+  printf %s "(cached) " >&6
+else case e in #(
+  e) if test -n "$NODE"; then
+  ac_cv_prog_NODE="$NODE" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_NODE="$ac_prog"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi ;;
+esac
+fi
+NODE=$ac_cv_prog_NODE
+if test -n "$NODE"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $NODE" >&5
+printf "%s\n" "$NODE" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+  test -n "$NODE" && break
+done
+test -n "$NODE" || NODE="no"
+
+if test "$NODE" == "no"
+then :
+  as_fn_error $? "install Node.js (node), before continuing." "$LINENO" 5
+fi
+
+for ac_prog in npm
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_NPM+y}
+then :
+  printf %s "(cached) " >&6
+else case e in #(
+  e) if test -n "$NPM"; then
+  ac_cv_prog_NPM="$NPM" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_NPM="$ac_prog"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi ;;
+esac
+fi
+NPM=$ac_cv_prog_NPM
+if test -n "$NPM"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $NPM" >&5
+printf "%s\n" "$NPM" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+  test -n "$NPM" && break
+done
+test -n "$NPM" || NPM="no"
+
+if test "$NPM" == "no"
+then :
+  as_fn_error $? "install npm, before continuing." "$LINENO" 5
+fi
+
+for ac_prog in make
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+printf %s "checking for $ac_word... " >&6; }
+if test ${ac_cv_prog_MAKE+y}
+then :
+  printf %s "(cached) " >&6
+else case e in #(
+  e) if test -n "$MAKE"; then
+  ac_cv_prog_MAKE="$MAKE" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  case $as_dir in #(((
+    '') as_dir=./ ;;
+    */) ;;
+    *) as_dir=$as_dir/ ;;
+  esac
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
+    ac_cv_prog_MAKE="$ac_prog"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi ;;
+esac
+fi
+MAKE=$ac_cv_prog_MAKE
+if test -n "$MAKE"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $MAKE" >&5
+printf "%s\n" "$MAKE" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+  test -n "$MAKE" && break
+done
+test -n "$MAKE" || MAKE="no"
+
+if test "$NPM" == "no"
+then :
+  as_fn_error $? "install GNU Make (make), before continuing." "$LINENO" 5
+fi
 
 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking if 'NPM_REGISTRY' is set" >&5
 printf %s "checking if 'NPM_REGISTRY' is set... " >&6; }
@@ -1924,8 +1947,14 @@ else
 printf "%s\n" "no" >&6; }
 fi
 
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: initializing npm..." >&5
-printf "%s\n" "$as_me: initializing npm..." >&6;}
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: showing version info..." >&5
+printf "%s\n" "$as_me: showing version info..." >&6;}
+sh -cx "npm --version"
+sh -cx "node --version"
+sh -cx "git --version"
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: initializing npm project..." >&5
+printf "%s\n" "$as_me: initializing npm project..." >&6;}
 npm install
 
 cat >confcache <<\_ACEOF
diff --git a/configure.ac b/configure.ac
index a61ab5a..4919c2b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,10 +1,21 @@
 
 AC_INIT
 
-AC_CHECK_PROGS([MAKE], [make])
-AC_CHECK_PROGS([PYTHON3], [npm])
-AC_CHECK_PROGS([AUTOCONF], [autoconf])
-AC_CHECK_PROGS([GIT], [git])
+AC_CHECK_PROGS([GIT], [git], [no])
+AS_IF([test "$GIT" == "no"], 
+      [AC_MSG_ERROR([install Git, before continuing.])])
+
+AC_CHECK_PROGS([NODE], [node], [no])
+AS_IF([test "$NODE" == "no"], 
+      [AC_MSG_ERROR([install Node.js (node), before continuing.])])
+
+AC_CHECK_PROGS([NPM], [npm], [no])
+AS_IF([test "$NPM" == "no"], 
+      [AC_MSG_ERROR([install npm, before continuing.])])
+
+AC_CHECK_PROGS([MAKE], [make], [no])
+AS_IF([test "$NPM" == "no"], 
+      [AC_MSG_ERROR([install GNU Make (make), before continuing.])])
 
 AC_MSG_CHECKING([if 'NPM_REGISTRY' is set])
 if ! test -z "$NPM_REGISTRY"; then
@@ -20,7 +31,12 @@ else
     AC_MSG_RESULT([no])
 fi
 
-AC_MSG_NOTICE([initializing npm...])
+AC_MSG_NOTICE([showing version info...])
+sh -cx "npm --version"
+sh -cx "node --version"
+sh -cx "git --version"
+
+AC_MSG_NOTICE([initializing npm project...])
 npm install
 
 AC_OUTPUT