Complie libbb/duration.c if ping[6] is selected

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/libbb/duration.c b/libbb/duration.c
index 765a1e9fe92b1480ecbe4597972f61c89445ee5c..2f272771f3996862ff1d6b0c93434e137df1bc77 100644 (file)
--- a/libbb/duration.c
+++ b/libbb/duration.c
@@ -15,6 +15,8 @@
 //kbuild:lib-$(CONFIG_SLEEP)   += duration.o
 //kbuild:lib-$(CONFIG_TOP)     += duration.o
 //kbuild:lib-$(CONFIG_TIMEOUT) += duration.o
+//kbuild:lib-$(CONFIG_PING)    += duration.o
+//kbuild:lib-$(CONFIG_PING6)   += duration.o
 
 #include "libbb.h"