diff -urN kdebase-startkde-4.2.3-orig/startkde.cmake kdebase-startkde-4.2.3/startkde.cmake
--- kdebase-startkde-4.2.3-orig/startkde.cmake	2009-05-18 13:45:32.000000000 +0930
+++ kdebase-startkde-4.2.3/startkde.cmake	2009-05-18 13:48:04.000000000 +0930
@@ -7,6 +7,37 @@
 # because we still need to do some cleanup.
 trap 'echo GOT SIGHUP' HUP
 
+_KDEDIR=/usr
+if [ "$_KDEDIR" != "/usr" ]; then
+	export PATH=${_KDEDIR}/bin:$(echo ${PATH} | sed 's/$/:/g;s#/usr/kde/[^/]*/s\?bin/\?:##g;s/:$//g')
+	export ROOTPATH=${_KDEDIR}/sbin:${_KDEDIR}/bin:$(echo ${PATH} | sed 's/$/:/g;s#/usr/kde/[^/]*/s\?bin/\?:##g;s/:$//g')
+	export XDG_CONFIG_DIRS=${_KDEDIR}/etc/xdg
+fi
+@REPLACE_LDPATH@
+export STRIGI_PLUGIN_PATH="${_KDEDIR}/lib/strigi:${STRIGI_PLUGIN_PATH}"
+export XDG_DATA_DIRS=${_KDEDIR}/share:$(echo ${XDG_DATA_DIRS} | sed 's/$/:/g;s#/usr/kde/[^/]*/share/\?:##g;s/:$//g')
+export XDG_MENU_PREFIX=kde-4.2-
+
+if [ -z "$HOME" ]; then
+	xmessage "HOME is unset. Your user config seems to be broken. Aborting."
+	exit 1
+fi
+
+# Gentoo: handle the possible home directory layout for config directory
+# Note that we change the default KDEHOME in kdelibs to .kde4 or .kde${SLOT}
+# for -kdeprefix and +kdeprefix respectively.
+if [ "${_KDEDIR}" = "/usr" ]; then
+	# If the directory doesn't exist make it
+	[ -e "${HOME}/.kde4" ] || mkdir "$HOME/.kde4"
+else
+	# Use multiple directories based upon the KDE directory
+	[ -e "$HOME/.kde$(basename $_KDEDIR)" ] || mkdir "$HOME/.kde$(basename $_KDEDIR)"
+	if [ ! -d "$HOME/.kde$(basename $_KDEDIR)" ]; then
+		xmessage "$HOME/.kde$(basename $_KDEDIR) exists but is not a dir. Aborting."
+		exit 1
+	fi
+fi
+
 # Check if a KDE session already is running and whether it's possible to connect to X
 kcheckrunning
 kcheckrunning_result=$?
@@ -210,6 +241,13 @@
   done
 done
 
+# Gentoo part for FHS installs
+if [ "${_KDEDIR}" = "/usr" ]; then
+  for file in "/etc/kde/startup/"*.sh; do
+    test -r "${file}" && . "${file}"
+  done
+fi
+
 # Set the path for Qt plugins provided by KDE
 if test -n "$QT_PLUGIN_PATH"; then
   QT_PLUGIN_PATH="$QT_PLUGIN_PATH:`kde4-config --path qtplugins`"
@@ -218,6 +256,13 @@
 fi
 export QT_PLUGIN_PATH
 
+# Source scripts in /etc/X11/xinit/xinitrc.d/ for system-level defined stuff
+if test -d "/etc/X11/xinit/xinitrc.d/"; then
+  for file in "/etc/X11/xinit/xinitrc.d/"*; do
+    test -x "$file" && . "$file"
+  done
+fi
+
 # Activate the kde font directories.
 #
 # There are 4 directories that may be used for supplying fonts for KDE.
@@ -423,6 +468,13 @@
   done
 done
 
+# Gentoo part for FHS installs
+if [ "${_KDEDIR}" = "/usr" ]; then
+  for file in "/etc/kde/shutdown/"*.sh; do
+    test -r "${file}" && . "${file}"
+  done
+fi
+
 unset KDE_FULL_SESSION
 xprop -root -remove KDE_FULL_SESSION
 unset KDE_SESSION_VERSION