Chuck Atkins authored Sep 29, 2015 and Brad King committed Sep 30, 2015

Instead of always adding CMAKE_SHARED_LIBRARY_LINK_<LANG>_FLAGS to
executables, or just when the ENABLE_EXPORTS property is set (CMP0065),
make sure that the target platform also actually supports shared
libraries.  If not, then the executable cannot possibly provide symbols
to them anyway.