1 # Based on CheckLibraryExists.cmake from CMake

     2 #=============================================================================

     3 # Copyright 2002-2009 Kitware, Inc.

     4 #

     5 # Distributed under the OSI-approved BSD License

     6 #

     7 # This software is distributed WITHOUT ANY WARRANTY; without even the

     8 # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

     9 # See the License for more information.

    10 #=============================================================================

    11 

    12 macro(CHECK_HASKELL_MODULE_EXISTS MODULE FUNCTION PARAMCOUNT LIBRARY)

    13   set(VARIABLE "HS_MODULE_${LIBRARY}_${FUNCTION}")

    14   if(${VARIABLE} MATCHES ^${VARIABLE}$)

    15     message(STATUS "Looking for ${FUNCTION} in ${MODULE}")

    16 

    17     set(PARAMETERS "")

    18 

    19     if(PARAMCOUNT GREATER 0)

    20         foreach(__TRASH__ RANGE 1 ${PARAMCOUNT})

    21             set(PARAMETERS "${PARAMETERS} undefined")

    22         endforeach()

    23     endif()

    24 

    25     #set(PARAMETERS "")

    26 

    27     execute_process(COMMAND ${GHC_EXECUTABLE}

    28                     "-DMODULE=${MODULE}"

    29                     "-DFUNCTION=${FUNCTION}"

    30                     "-DPARAMETERS=${PARAMETERS}"

    31                     -hide-all-packages

    32                     -package ${LIBRARY}

    33                     -package base

    34                     -cpp

    35                     -c "${CMAKE_MODULE_PATH}/checkModule.hs"

    36                     RESULT_VARIABLE COMMAND_RESULT

    37                     ERROR_VARIABLE BUILD_ERROR

    38                     OUTPUT_STRIP_TRAILING_WHITESPACE

    39                     )

    40     if(${COMMAND_RESULT} EQUAL 0)

    41       message(STATUS "Looking for ${FUNCTION} in ${MODULE} - found")

    42       set(${VARIABLE} 1 CACHE INTERNAL "Have module ${MODULE}")

    43       file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log

    44         "Determining if the function ${FUNCTION} exists in the ${MODULE} passed\n\n")

    45     else()

    46       message(STATUS "Looking for ${FUNCTION} in ${MODULE} - not found")

    47       set(${VARIABLE} "" CACHE INTERNAL "Have module ${MODULE}")

    48       file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log

    49         "Determining if the function ${FUNCTION} exists in the ${MODULE} "

    50         "failed with the following output:\n"

    51         "${BUILD_ERROR}\n\n")

    52       message(FATAL_ERROR "Haskell library '${LIBRARY}' required")

    53     endif()

    54   endif()

    55 endmacro()