COMP: Added FindZMQ.cmake to Utilities/CMake

Copied from http://github.com/PatrickCheng/zeromq2/raw/master/FindZMQ.cmake

Utilities/CMake/FindZMQ.cmake

@@ -0,0 +1,87 @@
+# - Find an ZMQ installation or build tree.
+
+# When ZMQ is found, the ZMQConfig.cmake file is sourced to setup the
+# location and configuration of ZMQ.  Please read this file, or
+# ZMQConfig.cmake.in from the ZMQ source tree for the full list of
+# definitions.  Of particular interest is ZMQ_USE_FILE, a CMake source file
+# that can be included to set the include directories, library directories,
+# and preprocessor macros.  In addition to the variables read from
+# ZMQConfig.cmake, this find module also defines
+#  ZMQ_DIR  - The directory containing ZMQConfig.cmake.  
+#             This is either the root of the build tree, 
+#             or the CTK/CMakeExternals/Build/ZMQ directory.  
+#             This is the only cache entry.
+#   
+#  ZMQ_FOUND - Whether ZMQ was found.  If this is true, 
+#              ZMQ_DIR is okay.
+#
+#  USE_ZMQ_FILE - The full path to the ZMQ.cmake file.  
+#                 This is provided for backward 
+#                 compatability.  Use ZMQ_USE_FILE
+#                 instead.
+
+
+SET(ZMQ_DIR_STRING "directory containing ZMQConfig.cmake.  This is either the root of the build tree, or PREFIX/lib/zmq for an installation.")
+
+# Search only if the location is not already known.
+IF(NOT ZMQ_DIR)
+  # Get the system search path as a list.
+  IF(UNIX)
+    STRING(REGEX MATCHALL "[^:]+" ZMQ_DIR_SEARCH1 "$ENV{PATH}")
+  ELSE(UNIX)
+    STRING(REGEX REPLACE "\\\\" "/" ZMQ_DIR_SEARCH1 "$ENV{PATH}")
+  ENDIF(UNIX)
+  STRING(REGEX REPLACE "/;" ";" ZMQ_DIR_SEARCH2 ${ZMQ_DIR_SEARCH1})
+
+  # Construct a set of paths relative to the system search path.
+  SET(ZMQ_DIR_SEARCH "")
+  FOREACH(dir ${ZMQ_DIR_SEARCH2})
+    SET(ZMQ_DIR_SEARCH ${ZMQ_DIR_SEARCH} "${dir}/../lib/zmq")
+  ENDFOREACH(dir)
+
+  #
+  # Look for an installation or build tree.
+  #
+  FIND_PATH(ZMQ_DIR ZMQConfig.cmake
+    # Look for an environment variable ZMQ_DIR.
+    $ENV{ZMQ_DIR}
+
+    # Look in places relative to the system executable search path.
+    ${ZMQ_DIR_SEARCH}
+
+    # Look in standard UNIX install locations.
+    /usr/local/lib/zmq
+    /usr/lib/zmq
+
+    # Read from the CMakeSetup registry entries.  It is likely that
+    # ZMQ will have been recently built.
+    [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild1]
+    [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild2]
+    [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild3]
+    [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild4]
+    [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild5]
+    [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild6]
+    [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild7]
+    [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild8]
+    [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild9]
+    [HKEY_CURRENT_USER\\Software\\Kitware\\CMakeSetup\\Settings\\StartPath;WhereBuild10]
+
+    # Help the user find it if we cannot.
+    DOC "The ${ZMQ_DIR_STRING}"
+  )
+ENDIF(NOT ZMQ_DIR)
+
+# If ZMQ was found, load the configuration file to get the rest of the
+# settings.
+IF(ZMQ_DIR)
+  SET(ZMQ_FOUND 1)
+  INCLUDE(${ZMQ_DIR}/ZMQConfig.cmake)
+
+  # Set USE_ZMQ_FILE for backward-compatability.
+  SET(USE_ZMQ_FILE ${ZMQ_USE_FILE})
+ELSE(ZMQ_DIR)
+  SET(ZMQ_FOUND 0)
+  IF(ZMQ_FIND_REQUIRED)
+    MESSAGE(FATAL_ERROR "Please set ZMQ_DIR to the ${ZMQ_DIR_STRING}")
+  ENDIF(ZMQ_FIND_REQUIRED)
+ENDIF(ZMQ_DIR)