File list of package libx32objc-8-dev in buster of architecture amd64
/usr/lib/gcc/x86_64-linux-gnu/8/x32/libobjc.a /usr/lib/gcc/x86_64-linux-gnu/8/x32/libobjc.so /usr/share/doc/libx32objc-8-dev
/usr/lib/gcc/x86_64-linux-gnu/8/x32/libobjc.a /usr/lib/gcc/x86_64-linux-gnu/8/x32/libobjc.so /usr/share/doc/libx32objc-8-dev