error: "_FORTIFY_SOURCE" redefined [Werror]

<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

此处编译错误是由于ubuntu 11.10采用了GCC4.6.1导致的。

解决方法：

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