Switch to C++11

Change-Id: Ib2970327c36422d7b11103d52ba7e9e52db5554f
diff --git a/native/jni/Android.mk b/native/jni/Android.mk
index 3b3da96..9657b9d 100644
--- a/native/jni/Android.mk
+++ b/native/jni/Android.mk
@@ -31,15 +31,12 @@
     -Wwrite-strings -Wfloat-equal -Wpointer-arith -Winit-self -Wredundant-decls \
     -Woverloaded-virtual -Wstrict-null-sentinel -Wsign-promo -Wno-system-headers
 
-ifeq ($(TARGET_ARCH), arm)
-ifeq ($(TARGET_GCC_VERSION), 4.6)
-LOCAL_CFLAGS += -Winline
-endif # TARGET_GCC_VERSION
-endif # TARGET_ARCH
-
 # To suppress compiler warnings for unused variables/functions used for debug features etc.
 LOCAL_CFLAGS += -Wno-unused-parameter -Wno-unused-function
 
+# For C++11
+LOCAL_CFLAGS += -std=c++11
+
 include $(LOCAL_PATH)/NativeFileList.mk
 
 LOCAL_SRC_FILES := \
@@ -64,7 +61,7 @@
 LOCAL_MODULE_TAGS := optional
 
 LOCAL_SDK_VERSION := 14
-LOCAL_NDK_STL_VARIANT := stlport_static
+LOCAL_NDK_STL_VARIANT := gnustl_static
 
 include $(BUILD_STATIC_LIBRARY)
 ######################################
@@ -87,7 +84,7 @@
 LOCAL_MODULE_TAGS := optional
 
 LOCAL_SDK_VERSION := 14
-LOCAL_NDK_STL_VARIANT := stlport_static
+LOCAL_NDK_STL_VARIANT := gnustl_static
 LOCAL_LDFLAGS += -ldl
 
 include $(BUILD_SHARED_LIBRARY)