DF="busybox.def.h"
MF="busybox.c"
-LIST="$(sed -n '/^#define/{s/^#define BB_FEATURE_.*//g;s/^#define //p;}' $DF)"
+#LIST="$(sed -n '/^#define/{s/^#define BB_FEATURE_.*//g;s/^#define //p;}' $DF)"
+LIST="$(cpp $DF -dM | sed -n -e '/^.*BB_FEATURE.*$/d;s/^#define.*\<BB_\(.*\)\>/\1/gp;' | sort)"
for def in ${LIST}; do
i=`sed -n '/^#ifdef \<'$def'\>.*/,/^#endif/{ s/.*\"\(.*\)\".*\(_BB_DIR_[A-Z_]*\).*$/\2\/\1/gp; }' $MF`