[CMake] Make program arguments

[Moreland, Kenneth]

Is there a way to add arguments to the invocation of make?  In particular, I
want to add the -j flag to do parallel compiles.  I tried setting the
CMAKE_MAKE_PROGRAM variable to "/usr/bin/make -j8", but I get the following
error when I try to compile.

CMake Error: Generator: execution of make failed. Make command was:
/usr/bin/make\ -j8 "cmTryCompileExec/fast"

I'm pretty sure this used to work, but it seems to have stopped working in
Cmake 2.6.

-Ken