genex: introduce $<TARGET_NAME_IF_EXISTS:...>
Which is expands to the given target name or an empty string.
See also #17123 (closed) and !1829 (merged).
Topic-rename: genex-TARGET_NAME_IF_EXISTS
Which is expands to the given target name or an empty string.
See also #17123 (closed) and !1829 (merged).
Topic-rename: genex-TARGET_NAME_IF_EXISTS