diff --git a/poky/meta/classes/kernel.bbclass b/poky/meta/classes/kernel.bbclass
index 4acec18..7b3c6be 100644
--- a/poky/meta/classes/kernel.bbclass
+++ b/poky/meta/classes/kernel.bbclass
@@ -226,8 +226,8 @@
 # Some Linux kernel configurations need additional parameters on the command line
 KERNEL_EXTRA_ARGS ?= ""
 
-EXTRA_OEMAKE = " HOSTCC="${BUILD_CC} ${BUILD_CFLAGS} ${BUILD_LDFLAGS}" HOSTCPP="${BUILD_CPP}""
-EXTRA_OEMAKE += " HOSTCXX="${BUILD_CXX} ${BUILD_CXXFLAGS} ${BUILD_LDFLAGS}""
+EXTRA_OEMAKE = " HOSTCC="${BUILD_CC}" HOSTCFLAGS="${BUILD_CFLAGS}" HOSTLDFLAGS="${BUILD_LDFLAGS}" HOSTCPP="${BUILD_CPP}""
+EXTRA_OEMAKE += " HOSTCXX="${BUILD_CXX}" HOSTCXXFLAGS="${BUILD_CXXFLAGS}""
 
 KERNEL_ALT_IMAGETYPE ??= ""
 
@@ -322,9 +322,11 @@
 
 addtask bundle_initramfs after do_install before do_deploy
 
+KERNEL_DEBUG_TIMESTAMPS ??= "0"
+
 kernel_do_compile() {
 	unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
-	if [ "${BUILD_REPRODUCIBLE_BINARIES}" = "1" ]; then
+	if [ "${KERNEL_DEBUG_TIMESTAMPS}" != "1" ]; then
 		# kernel sources do not use do_unpack, so SOURCE_DATE_EPOCH may not
 		# be set....
 		if [ "${SOURCE_DATE_EPOCH}" = "" -o "${SOURCE_DATE_EPOCH}" = "0" ]; then
@@ -364,7 +366,7 @@
 
 do_compile_kernelmodules() {
 	unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE
-	if [ "${BUILD_REPRODUCIBLE_BINARIES}" = "1" ]; then
+	if [ "${KERNEL_DEBUG_TIMESTAMPS}" != "1" ]; then
 		# kernel sources do not use do_unpack, so SOURCE_DATE_EPOCH may not
 		# be set....
 		if [ "${SOURCE_DATE_EPOCH}" = "" -o "${SOURCE_DATE_EPOCH}" = "0" ]; then