cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
+#
+# Prevent tail-call optimizations, to get clearer backtraces:
+#
+cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
+
# old style option for packed stacks
ifeq ($(call cc-option-yn,-mkernel-backchain),y)
cflags-$(CONFIG_PACK_STACK) += -mkernel-backchain -D__PACK_STACK