/usr/lib/gcc/arm-linux-gnueabihf/ is in gobjc-4.5-arm-linux-gnueabihf 4.5.3-12ubuntu2cross1.61.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/cc1obj
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/objc/
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/objc/NXConstStr.h
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/objc/Object.h
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/objc/Protocol.h
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/objc/encoding.h
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/objc/hash.h
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/objc/objc-api.h
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/objc/objc-decls.h
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/objc/objc-list.h
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/objc/objc.h
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/objc/sarray.h
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/objc/thr.h
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/include/objc/typedstream.h
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/libobjc.a
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/libobjc.so
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/libobjc_gc.a
/usr/lib/gcc/arm-linux-gnueabihf/4.5.3/libobjc_gc.so