rootreadspeed should be marked as "CMAKENOEXPORT"

[StefanBruens]

Explain what you would like to see improved and how.

EXPORT'ed targets are only useful for binaries used during builds (like code generators), but not for general runtime executables.

When the built ROOT package is installed as separate components, the devel package typically des not pull in the complete runtime environment, but just e.g. header files and libraries.

When binaries are like rootreadspeed are EXPORT'ed, the development package becomes dependent on the complete runtime, and its transient dependencies. This is problematic for automatic build environments trying to minimize the set of installed packages.

ROOT version

6.32.06

Installation method

zypper

Operating system

Linux

Additional context

Also applies to current HEAD:

root/main/CMakeLists.txt

Line 40 in 86980c0

ROOT_EXECUTABLE(rootreadspeed src/readspeed.cxx LIBRARIES RIO Tree TreePlayer ReadSpeed)

May also be relevant for other ROOT_EXECUTABLE targets.