Use gnu++11 instead of c++11.

libdex depends on safe-iop, which needs typeof, which is a GNU
extension.

Bug: 18466763
Change-Id: I11ff261991252feab49505c25249c43accfee4ab
diff --git a/libdex/Android.mk b/libdex/Android.mk
index 0b805dd..15e7ba7 100644
--- a/libdex/Android.mk
+++ b/libdex/Android.mk
@@ -49,6 +49,7 @@
 #LOCAL_CFLAGS += -UNDEBUG -DDEBUG=1
 LOCAL_SRC_FILES := $(dex_src_files)
 LOCAL_C_INCLUDES += $(dex_include_files)
+LOCAL_CPPFLAGS := -std=gnu++11
 LOCAL_STATIC_LIBRARIES := liblog
 LOCAL_WHOLE_STATIC_LIBRARIES := libziparchive
 LOCAL_SHARED_LIBRARIES := libutils
@@ -69,6 +70,7 @@
 include $(CLEAR_VARS)
 LOCAL_SRC_FILES := $(dex_src_files)
 LOCAL_C_INCLUDES += $(dex_include_files)
+LOCAL_CPPFLAGS := -std=gnu++11
 LOCAL_STATIC_LIBRARIES := liblog libutils
 LOCAL_WHOLE_STATIC_LIBRARIES := libziparchive-host
 LOCAL_MODULE_TAGS := optional