android源码编译64位改成32位的办法（转载）
You are attempting to build on a 32-bit system.Only 64-bit build environments are supported beyond froyo/2.2.?需要进行如下修改即可，将./external/clearsilver/cgi/Android.mk?./external/clearsilver/java-jni/Android.mk?./external/clearsilver/util/Android.mk?./external/clearsilver/cs/Android.mk四个文件中的LOCAL_CFLAGS += -m64?LOCAL_LDFLAGS += -m64?注释掉，或者将“64”换成“32”LOCAL_CFLAGS += -m32?LOCAL_LDFLAGS += -m32?
然后，将./build/core/main.mk 中的ifneq?(64,$(findstring?64,$(build_arch)))?改为：ifneq?(i686,$(findstring?i686,$(build_arch)))