install: Add sane set of defaults for COMPONENT parameter
If the user does not specify a COMPONENT for a target type, the install() command currently uses the value "Unspecified".
Documentation and examples of the install(TARGETS) command use the components "Libraries" and "Development".
Documentation and examples of the install(EXPORT) command use the components "Runtime" and "Development".
I propose to use the following defaults instead of "Unspecified":
-
TARGET ARCHIVE COMPONENT:"Development" -
TARGET LIBRARY COMPONENT:"Runtime" -
TARGET LIBRARY NAMELINK_COMPONENT:"Development" -
TARGET RUNTIME COMPONENT:"Runtime" -
EXPORT COMPONENT:"Development"
Then, drop the COMPONENT from simple examples. Use the component names "Runtime" and "Development" consistently in the documentation.
This is a breaking change for projects that currently expect things to end up in the "Unspecified" component.
This may require a policy.