more index work

fixed gnome detection (i think)
added back/forward navigation to gui debugger

configure.in

@@ -25,16 +25,29 @@ OPTDIRS=""
 dnl ---------------------------------------------------------------------
 dnl Compile time options
 dnl ---------------------------------------------------------------------
-AC_ARG_ENABLE(sql,
-  [  --enable-sql Enable SQL engine])
 
-if test "$enable_sql" = "yes" ; then
-     CFLAGS="$CFLAGS -DSQL"
-	sql=true
-     OPTDIRS="$OPTDIRS sql"
+sql=true
+AC_MSG_CHECKING( Are we using flex )
+if test "x$LEX" = "xflex"; then
+LFLAGS="$LFLAGS -i"
+AC_MSG_RESULT( yes );
+else
+AC_MSG_RESULT( no - SQL engine disable);
+sql=false
 fi
+
+if test "x$YACC" = "x"; then
+sql=false
+fi
+
+if test "x$sql" = "xtrue"; then
+	CFLAGS="$CFLAGS -DSQL"
+	OPTDIRS="$OPTDIRS sql"
+fi
+
 AM_CONDITIONAL(SQL, test x$sql = xtrue)
 AC_SUBST(SQL)
+AC_SUBST(LFLAGS)
 
 dnl check for iODBC
 
@@ -45,9 +58,9 @@ if test "$with_iodbc"; then
      ODBC_INC=$with_iodbc/include;
      odbc=true
      OPTDIRS="$OPTDIRS odbc"
-     if test "$enable_sql" != "yes" ; then
+     if test "x$sql" != "xtrue" ; then
           echo
-          echo ODBC requires the --enable-sql flag 
+          echo ODBC requires flex and bison for the SQL engine
           exit 1
      fi
 fi
@@ -60,9 +73,9 @@ if test "$with_unixodbc"; then
      ODBC_INC=$with_unixodbc/include
      odbc=true
      OPTDIRS="$OPTDIRS odbc"
-     if test "$enable_sql" != "yes" ; then
+     if test "x$sql" != "xtrue" ; then
           echo
-          echo ODBC requires the --enable-sql flag 
+          echo ODBC requires flex and bison for the SQL engine
           exit 1
      fi
 fi
@@ -81,9 +94,9 @@ if test "$no_glib" == yes; then
 	exit 1
 fi
 
-PKG_CHECK_MODULES(GNOME,libglade-2.0 libgnomeui-2.0)
+PKG_CHECK_MODULES(GNOME,libglade-2.0 libgnomeui-2.0, HAVE_GNOME=true, HAVE_GNOME=false)
 
-if test "$GNOME_CFLAGS" != ""; then
+if test "x$HAVE_GNOME" = "xtrue"; then
 	AC_SUBST(GNOME_CFLAGS)
 	AC_SUBST(GNOME_LIBS)
 	OPTDIRS="$OPTDIRS gmdb2"