diff -up bltk-1.0.9/wl_developer/bltk_wl_developer_install.sh.cond_install bltk-1.0.9/wl_developer/bltk_wl_developer_install.sh
--- bltk-1.0.9/wl_developer/bltk_wl_developer_install.sh.cond_install	2009-07-29 11:38:48.000000000 +0200
+++ bltk-1.0.9/wl_developer/bltk_wl_developer_install.sh	2009-07-29 14:54:40.878602487 +0200
@@ -38,6 +38,8 @@
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 #
 
+[ -f "$BLTK_CONF" ] && . "$BLTK_CONF"
+
 source `dirname $0`/../../bin/bltk_wl_common
 [[ $? != 0 ]] && { echo "bltk tree corrupted"; exit 2; }
 
@@ -139,9 +141,14 @@ else
 	exit 1
 fi
 
-{
-startup
-$work
-cleanup 0
-}  2>&1 | tee -i $work.log
+if [[ "$WL_DEVELOPER_ENABLED" = "YES" && "$WL_DEVELOPER_EXTERN" = "YES" ]]
+then
+	{
+	startup
+	$work
+	cleanup 0
+	}  2>&1 | tee -i $work.log
+else
+	exit 0
+fi
 
diff -up bltk-1.0.9/wl_office/bltk_wl_office_install.sh.cond_install bltk-1.0.9/wl_office/bltk_wl_office_install.sh
--- bltk-1.0.9/wl_office/bltk_wl_office_install.sh.cond_install	2009-07-29 11:38:48.000000000 +0200
+++ bltk-1.0.9/wl_office/bltk_wl_office_install.sh	2009-07-29 15:00:59.406496688 +0200
@@ -38,6 +38,8 @@
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 #
 
+[ -f "$BLTK_CONF" ] && . "$BLTK_CONF"
+
 source `dirname $0`/../../bin/bltk_wl_common
 [[ $? != 0 ]] && { echo "bltk tree corrupted"; exit 2; }
 
@@ -80,7 +81,6 @@ cleanup()
 
 install_ooo()
 {
-
 	wl_remove_file ${HOME}/.sversionrc
 	wl_check_error $?
 
@@ -188,23 +188,27 @@
 
 }
 
-if [[ $# = 0 || $1 = i || $1 = install ]]
+if [[ "$WL_OFFICE_ENABLED" = "YES" && "$WL_OFFICE_EXTERN" = "YES" ]]
 then
-	work=install
-elif [[ $1 = install-loc ]]
-then
-	work=install-loc
-elif [[ $1 = u || $1 = uninstall ]]
-then
-	work=uninstall
+	if [[ $# = 0 || $1 = i || $1 = install ]]
+	then
+		work=install
+	elif [[ $1 = install-loc ]]
+	then
+		work=install-loc
+	elif [[ $1 = u || $1 = uninstall ]]
+	then
+		work=uninstall
+	else
+		echo "Invalid parameter"
+		exit 1
+	fi
+
+	{
+		startup
+		$work
+		cleanup 0
+	}  2>&1 | tee -i $work.log
 else
-	echo "Invalid parameter"
-	exit 1
+	exit 0
 fi
-
-{
-startup
-$work
-cleanup 0
-}  2>&1 | tee -i $work.log
-
--- bltk-1.0.9/wl_player/bltk_wl_player_install.sh.cond_install	2009-07-29 11:38:48.000000000 +0200
+++ bltk-1.0.9/wl_player/bltk_wl_player_install.sh	2009-07-29 15:06:43.249585854 +0200
@@ -41,6 +41,8 @@
 
 PLAYER_INSTALL_FLAGS=" --disable-ivtv"
 
+[ -f "$BLTK_CONF" ] && . "$BLTK_CONF"
+
 source `dirname $0`/../../bin/bltk_wl_common
 [[ $? != 0 ]] && { echo "bltk tree corrupted"; exit 2; }
 
@@ -286,17 +288,21 @@ else
 	exit 1
 fi
 
+if [[ "$WL_PLAYER_ENABLED" = "YES" && "$WL_PLAYER_EXTERN" = "YES" ]]
+then
 {
-
 #If there is a ENV variable named CFLAGS, the CFLAGS value in wl_player/Makefile
 #will be set to this ENV variable. Since the MPlayer will inherit the ENV CFLAGS
 #value, the compiling will failed for "-pedantic -std=c99" in CFLAGS. So we need
 #to unset the variable here.
 
-CFLAGS=
-LDFLAGS=
-startup
-$work
-cleanup 0
-}  2>&1 | tee -i $work.log
-
+	CFLAGS=
+	LDFLAGS=
+	startup
+	$work
+	cleanup 0
+	}  2>&1 | tee -i $work.log
+}
+else
+	exit 0
+fi