--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cmake_modules/CheckHaskellModuleExists.cmake	Tue Feb 04 23:53:43 2014 +0400
@@ -0,0 +1,52 @@
+# Based on CheckLibraryExists.cmake from CMake
+#=============================================================================
+# Copyright 2002-2009 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+
+macro(CHECK_HASKELL_MODULE_EXISTS MODULE FUNCTION PARAMCOUNT LIBRARY)
+  set(VARIABLE "HS_MODULE_${LIBRARY}_${FUNCTION}")
+  if("${VARIABLE}" MATCHES "^${VARIABLE}$")
+    message(STATUS "Looking for ${FUNCTION} in ${MODULE}")
+
+    set(PARAMETERS "")
+
+    if(PARAMCOUNT GREATER 0)
+        foreach(__TRASH__ RANGE 1 ${PARAMCOUNT})
+            set(PARAMETERS "${PARAMETERS} undefined")
+        endforeach()
+    endif()
+
+    set(PARAMETERS "")
+
+    execute_process(COMMAND ${GHC_EXECUTABLE}
+                    "-DMODULE=${MODULE}"
+                    "-DFUNCTION=${FUNCTION}"
+                    "-DPARAMETERS=${PARAMETERS}"
+                    -cpp
+                    -c "${CMAKE_MODULE_PATH}/checkModule.hs"
+                    ERROR_VARIABLE BUILD_ERROR
+                    OUTPUT_STRIP_TRAILING_WHITESPACE
+                    )
+
+    if("${BUILD_ERROR}" STREQUAL "")
+      message(STATUS "Looking for ${FUNCTION} in ${MODULE} - found")
+      set(${VARIABLE} 1 CACHE INTERNAL "Have module ${MODULE}")
+      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+        "Determining if the function ${FUNCTION} exists in the ${MODULE} passed\n\n")
+    else()
+      message(STATUS "Looking for ${FUNCTION} in ${MODULE} - not found")
+      set(${VARIABLE} "" CACHE INTERNAL "Have module ${MODULE}")
+      file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
+        "Determining if the function ${FUNCTION} exists in the ${MODULE} "
+        "failed with the following output:\n"
+        "${BUILD_ERROR}\n\n")
+      message(FATAL_ERROR "Haskell library '${LIBRARY}' required")
+    endif()
+  endif()
+endmacro()