diff -Nur catalyst-2.0.11.orig/arch/x86.py catalyst-2.0.11/arch/x86.py
--- catalyst-2.0.11.orig/arch/x86.py	2012-09-09 06:38:02.000000000 +0900
+++ catalyst-2.0.11/arch/x86.py	2012-10-13 17:25:26.000000000 +0900
@@ -7,9 +7,12 @@
 	def __init__(self,myspec):
 		builder.generic.__init__(self,myspec)
 		if self.settings["buildarch"]=="amd64":
-			if not os.path.exists("/bin/linux32") and not os.path.exists("/usr/bin/linux32"):
-					raise CatalystError,"required executable linux32 not found (\"emerge setarch\" to fix.)"
-			self.settings["CHROOT"]="linux32 chroot"
+			if os.uname()[0] == "Linux":
+				if not os.path.exists("/bin/linux32") and not os.path.exists("/usr/bin/linux32"):
+						raise CatalystError,"required executable linux32 not found (\"emerge setarch\" to fix.)"
+				self.settings["CHROOT"]="linux32 chroot"
+			else:
+				self.settings["CHROOT"]="chroot"
 			self.settings["crosscompile"] = False;
 		else:
 			self.settings["CHROOT"]="chroot"
diff -Nur catalyst-2.0.11.orig/modules/generic_stage_target.py catalyst-2.0.11/modules/generic_stage_target.py
--- catalyst-2.0.11.orig/modules/generic_stage_target.py	2012-09-09 06:38:02.000000000 +0900
+++ catalyst-2.0.11/modules/generic_stage_target.py	2012-10-13 17:32:58.000000000 +0900
@@ -400,7 +400,7 @@
 
 	def set_cleanables(self):
 		self.settings["cleanables"]=["/etc/resolv.conf","/var/tmp/*","/tmp/*",\
-			"/root/*","/usr/portage"]
+			"/root/*","/usr/portage","/etc/portage/make.conf.catalyst"]
 
 	def set_snapshot_path(self):
 		self.settings["snapshot_path"]=normpath(self.settings["storedir"]+\
@@ -1083,9 +1083,15 @@
 		if os.path.exists(self.settings["chroot_path"]+"/usr/local/portage"):
 			cmd("rm -rf "+self.settings["chroot_path"]+"/usr/local/portage",\
 				"Could not remove /usr/local/portage",env=self.env)
-			cmd("sed -i '/^PORTDIR_OVERLAY/d' "+self.settings["chroot_path"]+\
-				"/etc/portage/make.conf",\
-				"Could not remove PORTDIR_OVERLAY from make.conf",env=self.env)
+			if os.path.exists(self.settings["chroot_path"]+"/etc/portage/make.conf"):
+				if os.path.exists("/usr/bin/gsed"):
+					cmd("gsed -i '/^PORTDIR_OVERLAY/d' "+self.settings["chroot_path"]+\
+						"/etc/portage/make.conf",\
+						"Could not remove PORTDIR_OVERLAY from make.conf",env=self.env)
+				else:
+					cmd("sed -i '/^PORTDIR_OVERLAY/d' "+self.settings["chroot_path"]+\
+						"/etc/portage/make.conf",\
+						"Could not remove PORTDIR_OVERLAY from make.conf",env=self.env)
 
 		""" Clean up old and obsoleted files in /etc """
 		if os.path.exists(self.settings["stage_path"]+"/etc"):
diff -Nur catalyst-2.0.11.orig/modules/stage1_target.py catalyst-2.0.11/modules/stage1_target.py
--- catalyst-2.0.11.orig/modules/stage1_target.py	2012-09-09 06:38:02.000000000 +0900
+++ catalyst-2.0.11/modules/stage1_target.py	2012-10-13 17:25:26.000000000 +0900
@@ -92,10 +92,14 @@
 		# stage_path/proc probably doesn't exist yet, so create it
 		if not os.path.exists(self.settings["stage_path"]+"/proc"):
 			os.makedirs(self.settings["stage_path"]+"/proc")
+		if not os.path.exists(self.settings["stage_path"]+"/dev"):
+			os.makedirs(self.settings["stage_path"]+"/dev")
 
 		# alter the mount mappings to bind mount proc onto it
 		self.mounts.append("/tmp/stage1root/proc")
 		self.mountmap["/tmp/stage1root/proc"]="/proc"
+		self.mounts.append("/tmp/stage1root/dev")
+		self.mountmap["/tmp/stage1root/dev"]="/dev"
 
 	def set_update_seed(self):
 		if self.settings.has_key("update_seed"):
diff -Nur catalyst-2.0.11.orig/targets/stage3/stage3-chroot.sh catalyst-2.0.11/targets/stage3/stage3-chroot.sh
--- catalyst-2.0.11.orig/targets/stage3/stage3-chroot.sh	2012-09-09 06:38:02.000000000 +0900
+++ catalyst-2.0.11/targets/stage3/stage3-chroot.sh	2012-10-13 17:25:26.000000000 +0900
@@ -5,4 +5,11 @@
 ## START BUILD
 setup_pkgmgr
 
-run_merge "-e system"
+if [[ $(uname) == "FreeBSD" ]] ; then
+	# workaround fix bug 438112
+	run_merge "-e @system --exclude=sys-apps/portage"
+	run_merge "sys-apps/portage"
+else
+	run_merge "-e system"
+fi
+
diff -Nur catalyst-2.0.11.orig/targets/support/chroot-functions.sh catalyst-2.0.11/targets/support/chroot-functions.sh
--- catalyst-2.0.11.orig/targets/support/chroot-functions.sh	2012-09-09 06:38:02.000000000 +0900
+++ catalyst-2.0.11/targets/support/chroot-functions.sh	2012-10-13 17:25:26.000000000 +0900
@@ -413,5 +413,22 @@
 Icon=text-editor" > /usr/share/applications/gentoo-handbook.desktop
 }
 
+# GNU sed wrapper
+sed(){
+	if [ -e /usr/bin/gsed ]
+	then
+		/usr/bin/gsed "$@"
+	elif [ -e /bin/sed ]
+	then
+		/bin/sed "$@"
+	elif [ -e /usr/bin/sed ]
+	then
+		/usr/bin/sed "$@"
+	else
+		echo "ERROR: failed the selection of sed."
+		exit 1
+	fi
+}
+
 # We do this everywhere, so why not put it in this script
 run_default_funcs