高德地图API编译警告

版本：

V2.1.1

警告内容：

(null): warning: (i386) /Users/xiaominghan/Desktop/autonavi/MAMapKit_3D_r923_20131010/MapKit_static/MapKit_static/External/OffsetCoordinate/lib/Release-iphonesimulator/liboffset.a(offset.o) unable to open object file

暂时处理：

设置 target->Build Settings->Debug Information Format 为 DWARF