- grep -v ^\.PHONY < Makefile

+ busybox.def.h
  BB_FEATURE_TRIVIAL_HELP
+ uname.c has an example of how BB_FEATURE_TRIVIAL_HELP
  is to be applied.

busybox.def.h

@@ -130,6 +130,9 @@
 // normal strings.
 #define BB_FEATURE_FULL_REGULAR_EXPRESSIONS
 //
+// Use only simple command help
+#define BB_FEATURE_TRIVIAL_HELP
+//
 // Use termios to manipulate the screen ('more' is prettier with this on)
 #define BB_FEATURE_USE_TERMIOS
 //