improve robustness of cmake targets

As note as a catalyst issue some failures if WM_OSTYPE is not set.

Transfer some of the configuration setup from there.

mentioned in commit 21bccfdf

As noted in discussion with @sbna, the cmakeFunctions do not allow passing any additional arguments or using a make && make install setup.

• should change this for 1812.

Newer cmake warns about this:

CMake Deprecation Warning at CMakeLists.txt:6 (cmake_policy):
  The OLD behavior for policy CMP0002 will be removed from a future version
  of CMake.

  The cmake-policies(7) manual explains that the OLD behaviors of all
  policies are deprecated and that a policy should be set to OLD only under
  specific short-term circumstances.  Projects should be ported to the NEW
  behavior and not rely on setting a policy to OLD.

Need to review which cmake policies we are using and update accordingly.

closed