Merge \\\\"iputils assumes _GNU_SOURCE.\\\\" am: 2bb2e02629 am: 51c9113793 am: 15812b1548
am: f15015ae1e

Change-Id: Ie6204bcbfcb73ab0e1aa913c6e0a1bd464510d45
diff --git a/Android.mk b/Android.mk
index 5f5d72b..b2a4f9a 100644
--- a/Android.mk
+++ b/Android.mk
@@ -1,6 +1,7 @@
 LOCAL_PATH:= $(call my-dir)
 
 iputils_cflags := \
+  -D_GNU_SOURCE \
   -Wno-missing-field-initializers \
   -Wno-sign-compare \
   -Wno-unused-parameter \