diff --git a/Makefile.in b/Makefile.in
index 5576de8..dc39016 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -113,6 +113,7 @@ TCLSH_CMD = @TCLSH_CMD@
 # Where do we want to install the tcl plugin
 #
 TCLLIBDIR = @TCLLIBDIR@
+TCLDATADIR = @TCLDATADIR@
 
 # The suffix used on shared libraries.  Ex:  ".dll", ".so", ".dylib"
 #
@@ -791,9 +825,10 @@ pkgIndex.tcl:
 	echo 'package ifneeded sqlite3 $(RELEASE) [list load $(TCLLIBDIR)/libtclsqlite3.so sqlite3]' > $@
 tcl_install:	lib_install libtclsqlite3.la pkgIndex.tcl
 	$(INSTALL) -d $(DESTDIR)$(TCLLIBDIR)
+	$(INSTALL) -d $(DESTDIR)$(TCLDATADIR)
 	$(LTINSTALL) libtclsqlite3.la $(DESTDIR)$(TCLLIBDIR)
 	rm -f $(DESTDIR)$(TCLLIBDIR)/libtclsqlite3.la $(DESTDIR)$(TCLLIBDIR)/libtclsqlite3.a
-	$(INSTALL) -m 0644 pkgIndex.tcl $(DESTDIR)$(TCLLIBDIR)
+	$(INSTALL) -m 0644 pkgIndex.tcl $(DESTDIR)$(TCLDATADIR)
 
 clean:	
 	rm -f *.lo *.la *.o sqlite3$(TEXE) libsqlite3.la
diff --git a/configure.ac b/configure.ac
index 5facc75..6bc23a7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -158,7 +158,15 @@ if test "x${TCLLIBDIR+set}" != "xset" ; then
   done
   TCLLIBDIR="${TCLLIBDIR}/sqlite3"
 fi
-
+AC_ARG_VAR([TCLDATADIR], [Where to install tcl plugin])
+if test "x${TCLDATADIR+set}" != "xset" ; then
+  TCLDATADIR='$(datadir)'
+  for i in `echo 'puts stdout $auto_path' | ${TCLSH_CMD}` ; do
+    TCLDATADIR=$i
+    break
+  done
+  TCLDATADIR="${TCLDATADIR}/sqlite3"
+fi
 
 #########
 # Set up an appropriate program prefix