"Targets may link only to libraries."

[songololo]

When installing to Mac El Capitan 10.11.3:

The default installation finds the system geos framework but when I try to override this by editing CMakeCache.txt to my macports version then I get a list of warnings to this effect:

Target "osm2pgsql" requests linking to directory "/opt/local/include/geos".  Targets may link only to libraries.  CMake is dropping the item.

Then make subsequently fails with errors to this effect:

Undefined symbols for architecture x86_64:
etc.

Any ideas for what is wrong or how to get cmake to accept the macports geos?

[pnorman]

You shouldn't edit CMakeCache.txt.

If some installed dependencies are not found by CMake, more options may need to be set. Typically, setting CMAKE_PREFIX_PATH to a list of appropriate paths is sufficient.

[pnorman]

After #684 we no longer use geos, so this is a moot point.