<command-line>:0:0: error: "_FORTIFY_SOURCE" redefined [-Werror]

这两天在ubuntu12.04 32位上编译android4.0.3包，发现的如标题的错误。

错误打印如下：

host C++: obbtool <= frameworks/base/tools/obbtool/Main.cpp

<command-line>:0:0: error: "_FORTIFY_SOURCE" redefined [-Werror]

<built-in>:0:0: note: this is the location of the previous definition

cc1plus: all warnings being treated as errors

make: *** [out/host/linux-x86/obj/EXECUTABLES/obbtool_intermediates/Main.o] Error 1

上网查了查，解决方法如下：

修改源码目录下/build/core/combo/HOST_linux-x86.mk文件：
将以下语句
HOST_GLOBAL_CFLAGS += -D_FORTIFY_SOURCE=0
修改为
HOST_GLOBAL_CFLAGS += -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0
ATTENTION:

There is a SPACE between the -U_FORTIFY_SOURCE and -D_FORTIFY_SOURCE