1 # - Try to find the Glasgow Haskell Compiler executable

     2 # Once done this will define

     3 #

     4 #  GHC_FOUND       - system has GHC

     5 #  GHC_VERSION     - GHC version

     6 #  GHC_EXECUTABLE  - GHC executable

     7 #

     8 # Copyright (c) 2013, Vittorio Giovara <vittorio.giovara@gmail.com>

     9 #

    10 # Redistribution and use is allowed according to the terms of the BSD license.

    11 # For details see the accompanying COPYING-CMAKE-SCRIPTS file.

    12 

    13 

    14 find_program(GHC_EXECUTABLE

    15     NAMES ghc

    16     PATHS /opt/local/bin /usr/local/bin /usr/bin

    17     )

    18 

    19 if (GHC_EXECUTABLE)

    20     # check Freepascal version

    21     execute_process(COMMAND ${GHC_EXECUTABLE} -V

    22                     OUTPUT_VARIABLE GHC_VERSION_OUTPUT

    23                     ERROR_VARIABLE GHC_VERSION_ERROR

    24                     RESULT_VARIABLE GHC_VERSION_RESULT

    25                     OUTPUT_STRIP_TRAILING_WHITESPACE

    26                     )

    27 

    28     if(${GHC_VERSION_RESULT} EQUAL 0)

    29         string(REGEX MATCH "([0-9]+)" GHC_VERSION ${GHC_VERSION_OUTPUT})

    30     else()

    31         message(SEND_ERROR "Command \"${GHC_EXECUTABLE} -V\" failed with output: ${GHC_VERSION_ERROR}")

    32     endif()

    33 endif()

    34 

    35 include(FindPackageHandleStandardArgs)

    36 find_package_handle_standard_args(GHC DEFAULT_MSG GHC_EXECUTABLE GHC_VERSION)

    37 mark_as_advanced(GHC_VERSION)

    38