--- chromium-16.0.899.0.ebuild.orig	2011-10-05 08:54:45.000000000 +0100
+++ chromium-16.0.899.0.ebuild	2011-10-10 13:56:13.000000000 +0100
@@ -216,9 +216,11 @@
 		$(gyp_use pulseaudio use_pulseaudio)"
 
 	# Enable sandbox.
-	myconf+="
-		-Dlinux_sandbox_path=${CHROMIUM_HOME}/chrome_sandbox
-		-Dlinux_sandbox_chrome_path=${CHROMIUM_HOME}/chrome"
+        if ! use prefix; then
+                myconf+="
+                        -Dlinux_sandbox_path=${CHROMIUM_HOME}/chrome_sandbox
+                        -Dlinux_sandbox_chrome_path=${CHROMIUM_HOME}/chrome"
+        fi
 
 	if host-is-pax; then
 		# Prevent the build from failing (bug #301880). The performance
@@ -262,7 +264,10 @@
 }
 
 src_compile() {
-	emake chrome chrome_sandbox BUILDTYPE=Release V=1 || die
+	emake chrome BUILDTYPE=Release V=1 || die
+        if ! use prefix; then
+	        emake chrome_sandbox BUILDTYPE=Release V=1 || die
+        fi
 	pax-mark m out/Release/chrome
 	if use chromedriver; then
 		emake chromedriver BUILDTYPE=Release V=1 || die
@@ -306,8 +311,11 @@
 src_install() {
 	exeinto "${CHROMIUM_HOME}"
 	doexe out/Release/chrome || die
-	doexe out/Release/chrome_sandbox || die
-	fperms 4755 "${CHROMIUM_HOME}/chrome_sandbox"
+
+        if ! use prefix; then
+	        doexe out/Release/chrome_sandbox || die
+	        fperms 4755 "${CHROMIUM_HOME}/chrome_sandbox"
+        fi
 
 	if use chromedriver; then
 		doexe out/Release/chromedriver || die