Verbose output option for CMake? (help finding windows libraries )

I'm trying to debug a problem with my CMakeLists.txt which works fine with Linux, but doesn't work with Win32.

I would like to turn on the verbose output of the cmake run, so that I get more information. However, all that is provided is the "Error:" messages in the CMake Problems tab.

In case any one wants to help me debug the problem, here is the relevent part of the CMakeLists.txt

IF(UNIX)
  set( THIRDPARTY   "/opt/pacbio/thirdparty/${CMAKE_SYSTEM_PROCESSOR}")
  set( BOOST_ROOT "${THIRDPARTY}")
  find_library(ZEROMQLIB  libzmq.so  "${THIRDPARTY}/lib" NO_DEFAULT_PATH)
ELSEIF (WIN32)
#  find_library(ZEROMQLIB  libzmq-v120-mt-4_0_4.lib        "c:\\Program Files\\ZeroMQ 4.0.4\\lib" NO_DEFAULT_PATH)
#  find_library(ZEROMQLIB  libzmq-v120-mt-4_0_4.lib        "c:/Program Files/ZeroMQ 4.0.4/lib" NO_DEFAULT_PATH)
#  find_library(ZEROMQLIB  libzmq-v120-mt-4_0_4.lib        "/cygdrive/C/Program Files/ZeroMQ 4.0.4/lib" NO_DEFAULT_PATH)
  find_library(ZEROMQLIB  libzmq       "/cygdrive/C/Program Files/ZeroMQ 4.0.4/lib" NO_DEFAULT_PATH)
  message(${ZEROMQLIB})
ENDIF()

The UNIX part works, the Windows part doesn't work, and I've tried all of the commented out lines. The error I get is just

Error: The following variables are used in this project, but they are set to NOTFOUND
  ZEROMQLIB

The library files are clearly there, but I don't know what path syntax to use.