diff --git a/Makefile.in b/Makefile.in
index 9cff81f..d4c605e 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -340,6 +340,7 @@ STRIP = @STRIP@
 UNZIP = @UNZIP@
 USE_NLS = @USE_NLS@
 VERSION = @VERSION@
+WISH = @WISH@
 XDG_OPEN = @XDG_OPEN@
 XGETTEXT = @XGETTEXT@
 XGETTEXT_015 = @XGETTEXT_015@
diff --git a/README.org b/README.org
index b7f7d7a..04f664e 100644
--- a/README.org
+++ b/README.org
@@ -37,6 +37,9 @@
 ** Programs
 
    + to build the package:
+     - C compiler
+     - SBCL compiler;
+     - curl
      - xgettext.
 
    + to install the package, including running the script to install lisp libraries (~quick_quicklisp.sh~):
@@ -44,7 +47,6 @@
      - git.
 
    + to run the program:
-     - SBCL compiler;
      - xdg-open;
      - openssl;
      - unzip (command line utitlity to decompress zip file);
diff --git a/configure b/configure
index 347f253..b44f96a 100755
--- a/configure
+++ b/configure
@@ -623,6 +623,7 @@ LTLIBOBJS
 LIBOBJS
 ENABLE_COMPLETION_FALSE
 ENABLE_COMPLETION_TRUE
+WISH
 COMPLETION_DIR
 PKG_CONFIG
 FILE
@@ -7805,6 +7806,63 @@ if test "$PKG_CONFIG" != "no" ; then
 
 fi
 
+for ac_prog in wish
+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_path_WISH+y}
+then :
+  printf %s "(cached) " >&6
+else $as_nop
+  case $WISH in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_WISH="$WISH" # 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
+  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_path_WISH="$as_dir$ac_word$ac_exec_ext"
+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+WISH=$ac_cv_path_WISH
+if test -n "$WISH"; then
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $WISH" >&5
+printf "%s\n" "$WISH" >&6; }
+else
+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
+fi
+
+
+  test -n "$WISH" && break
+done
+test -n "$WISH" || WISH="no"
+
+
+if test "$WISH" = "no" ; then
+   as_fn_error $? "Can not find TK interpreter executable." "$LINENO" 5
+   exit 1;
+fi
+
  if test "$COMPLETION_DIR" != ""; then
   ENABLE_COMPLETION_TRUE=
   ENABLE_COMPLETION_FALSE='#'
diff --git a/configure.ac b/configure.ac
index 1d53c4a..1a15f1a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -145,6 +145,13 @@ if test "$PKG_CONFIG" != "no" ; then
    AC_SUBST([COMPLETION_DIR])
 fi
 
+AC_PATH_PROGS([WISH],[wish],[no])
+
+if test "$WISH" = "no" ; then
+   AC_MSG_ERROR([Can not find TK interpreter executable.])
+   exit 1;
+fi
+
 AM_CONDITIONAL([ENABLE_COMPLETION],[test "$COMPLETION_DIR" != ""])
 
 AC_PROG_MKDIR_P