/usr/mipsel-linux-gnu/lib32/libobjc.so.4 is in libn32objc4-mipsel-cross 6.3.0-18cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/mipsel-linux-gnu/lib32/libobjc.so.4.0.0
/usr/mipsel-linux-gnu/lib32/libobjc.so.4.0.0