[CMake] permissions for installation directories

[Christophe Alexandre]

Hi all,
Is it possible to modify the permissions of installation directories  
using the INSTALL command ?
When I use a command like :

install(TARGETS mylib DESTINATION lib PERMISSIONS OWNER_READ  
OWNER_WRITE OWNER_EXECUTE
                                                        							 
GROUP_READ GROUP_EXECUTE
                                                        							 
WORLD_READ WORLD_EXECUTE)


the lib directory has the default permissions used by the user  
installing the soft.
How can I control the permissions on that directory ?

Thanks in advance.
Christophe Alexandre