diff --git a/poky/meta/classes/scons.bbclass b/poky/meta/classes/scons.bbclass
index b9ae19d..9ee7d15 100644
--- a/poky/meta/classes/scons.bbclass
+++ b/poky/meta/classes/scons.bbclass
@@ -2,16 +2,25 @@
 
 EXTRA_OESCONS ?= ""
 
-do_configure[noexec] = "1"
+do_configure() {
+	if [ -n "${CONFIGURESTAMPFILE}" ]; then
+		if [ -e "${CONFIGURESTAMPFILE}" -a "`cat ${CONFIGURESTAMPFILE}`" != "${BB_TASKHASH}" -a "${CLEANBROKEN}" != "1" ]; then
+			${STAGING_BINDIR_NATIVE}/scons --clean PREFIX=${prefix} prefix=${prefix} ${EXTRA_OESCONS}
+		fi
+
+		mkdir -p `dirname ${CONFIGURESTAMPFILE}`
+		echo ${BB_TASKHASH} > ${CONFIGURESTAMPFILE}
+	fi
+}
 
 scons_do_compile() {
-        ${STAGING_BINDIR_NATIVE}/scons ${PARALLEL_MAKE} PREFIX=${prefix} prefix=${prefix} ${EXTRA_OESCONS} || \
-        die "scons build execution failed."
+	${STAGING_BINDIR_NATIVE}/scons ${PARALLEL_MAKE} PREFIX=${prefix} prefix=${prefix} ${EXTRA_OESCONS} || \
+	die "scons build execution failed."
 }
 
 scons_do_install() {
-        ${STAGING_BINDIR_NATIVE}/scons install_root=${D}${prefix} PREFIX=${prefix} prefix=${prefix} ${EXTRA_OESCONS} install || \
-        die "scons install execution failed."
+	${STAGING_BINDIR_NATIVE}/scons install_root=${D}${prefix} PREFIX=${prefix} prefix=${prefix} ${EXTRA_OESCONS} install || \
+	die "scons install execution failed."
 }
 
 EXPORT_FUNCTIONS do_compile do_install