求问大神编译时候报这种错怎么破,弄了两天没找到方法: ./jni/include/cutils/atomic-inline.h:53:2: error: atomic operations are unsupported #error atomic operations are unsupported ./jni/dalvik/vm/IndirectRefTable.h:113:30: error: cast from pointer to smaller type 'u4' (aka 'unsigned int') loses information return (IndirectRefKind)((u4) iref & 0x03); ./jni/dalvik/vm/IndirectRefTable.h:353:19: error: cast from pointer to smaller type 'u4' (aka 'unsigned int') loses information u4 uref = (u4) iref; ./jni/dalvik/vm/oo/ObjectInlines.h:117:5: error: use of undeclared identifier 'android_compiler_barrier' ANDROID_MEMBAR_FULL(); ...