[klibc] Makefile: help document V=2 switch
New feature thanks to kbuild sync.
Signed-off-by: maximilian attems <max@stro.at>
diff --git a/Makefile b/Makefile
index 007de21..0a3ee69 100644
--- a/Makefile
+++ b/Makefile
@@ -133,6 +133,7 @@
@echo 'KLIBCKERNELSRC - Path to a configured linux tree'
@echo 'KLIBCKERNELOBJ - Path to kernel output dir (defaults to KLIBCKERNELSRC)'
@echo 'make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
+ @echo 'make V=2 [targets] 2 => give reason for rebuild of target'
@echo
@echo 'Sample invocation:'
@echo 'make KLIBCKERNELSRC=`pwd`/../linux/usr/'
