[CMake] Select subproject packages

[jupiter.hce at gmail.com]

Hi,

I have a top root project and many subprojects under it. I am using
cpack to package some subprojects, but I don't want to package
the root project. When I run the cpack on root build directory, it
also tried to package the root project. Is there any way to disable
package the root project?

Thank you.

Kind regards,

hce