-sed -n -e '/^\#define/ s/[^_]*__NR_\([^[:space:]]*\).*/\
-\#if !defined \(__NR_\1\) \&\& !defined \(__IGNORE_\1\)\
-\#warning syscall \1 not implemented\
-\#endif/p' $1
+ grep '^[0-9]' "$1" | sort -n | (
+ while read nr abi name entry ; do
+ echo <<EOF
+#if !defined(__NR_${name}) && !defined(__IGNORE_${name})
+#warning syscall ${name} not implemented
+#endif
+EOF
+ done
+ )