yum install libobjc
Setting up Install Process
Setting up repositories
update                    100% |=========================|  951 B    00:00
base                      100% |=========================| 1.1 kB    00:00
contrib                   100% |=========================|  951 B    00:00
centosplus                100% |=========================|  951 B    00:00
addons                    100% |=========================|  951 B    00:00
extras                    100% |=========================| 1.1 kB    00:00
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for libobjc to pack into transaction set.
libobjc-3.4.4-2.x86_64.rp 100% |=========================|  29 kB    00:00
---> Package libobjc.x86_64 0:3.4.4-2 set to be updated
---> Downloading header for libobjc to pack into transaction set.
libobjc-3.4.4-2.i386.rpm  100% |=========================|  29 kB    00:00
---> Package libobjc.i386 0:3.4.4-2 set to be updated
--> Running transaction check

Dependencies Resolved

=============================================================================
 Package                 Arch       Version          Repository        Size
=============================================================================
Installing:
 libobjc                 x86_64     3.4.4-2          base               68 k
 libobjc                 i386       3.4.4-2          base               62 k

Transaction Summary
=============================================================================
Install      2 Package(s)
Update       0 Package(s)
Remove       0 Package(s)
Total download size: 130 k
Is this ok [y/N]: N