diff --git a/kernel/Kbuild b/kernel/Kbuild
index 270b9c54..44b7c19d 100644
--- a/kernel/Kbuild
+++ b/kernel/Kbuild
@@ -2,6 +2,34 @@
 # Makefile for MARS
 #
 
+# remove_this
+ifndef CONFIG_MARS
+# mars_config.h is generated by a simple Kconfig parser (gen_config.pl)
+# at build time.
+# It does not respect any Kconfig dependencies.
+# Therefore, it is unsafe. Use at your own risk!
+# It is ONLY used for out-of-tree builds.
+#
+CONFIG_MARS_BIGMODULE := m
+CONFIG_MARS_NET_COMPAT := y
+obj-$(CONFIG_MARS_BIGMODULE)	+= mars.o
+extra-y	+= mars_config.h
+GEN_CONFIG_SCRIPT := $(src)/../scripts/gen_config.pl
+$(obj)/mars_config.h: $(obj)/buildtag.h
+$(obj)/mars_config.h: $(src)/Kconfig $(GEN_CONFIG_SCRIPT)
+	$(Q)$(kecho) "MARS: using compiler $($(CC) --version | head -1)"
+	$(CC) -v
+	$(Q)$(kecho) "MARS: Generating $@"
+	$(Q)set -e; \
+	if [ ! -x $(GEN_CONFIG_SCRIPT) ]; then \
+	    $(kecho) "MARS: cannot execute script $(GEN_CONFIG_SCRIPT)"; \
+	    /bin/false; \
+	fi; \
+	cat $< | $(GEN_CONFIG_SCRIPT) > $@;
+	cat $@;
+endif
+# end_remove_this
+
 obj-$(CONFIG_MARS)	+= mars.o
 
 KBUILD_CFLAGS += -fdelete-null-pointer-checks
@@ -101,28 +129,3 @@ $(obj)/buildtag.h: $(patsubst $(obj)/buildtag.h,,$(wildcard $(obj)/*.[ch])) $(ob
 	/bin/echo -e "#define BUILDHOST \"$$USER@`hostname`\"";\
 	/bin/echo -e "#define BUILDDATE \"$$(date '+%F %T')\""
 	cat $@;
-
-ifndef CONFIG_MARS
-# mars_config.h is generated by a simple Kconfig parser (gen_config.pl)
-# at build time.
-# It does not respect any Kconfig dependencies.
-# Therefore, it is unsafe. Use at your own risk!
-# It is ONLY used for out-of-tree builds.
-#
-CONFIG_MARS_BIGMODULE := m
-obj-$(CONFIG_MARS_BIGMODULE)	+= mars.o
-extra-y	+= mars_config.h
-GEN_CONFIG_SCRIPT := $(src)/../scripts/gen_config.pl
-$(obj)/mars_config.h: $(obj)/buildtag.h
-$(obj)/mars_config.h: $(src)/Kconfig $(GEN_CONFIG_SCRIPT)
-	$(Q)$(kecho) "MARS: using compiler $($(CC) --version | head -1)"
-	$(CC) -v
-	$(Q)$(kecho) "MARS: Generating $@"
-	$(Q)set -e; \
-	if [ ! -x $(GEN_CONFIG_SCRIPT) ]; then \
-	    $(kecho) "MARS: cannot execute script $(GEN_CONFIG_SCRIPT)"; \
-	    /bin/false; \
-	fi; \
-	cat $< | $(GEN_CONFIG_SCRIPT) > $@;
-	cat $@;
-endif