+
−# - Try to find the Glasgow Haskell Compiler executable
+
−# Once done this will define
+
−#
+
−#  GHC_VERSION        - GHC version
+
−#  GHC_EXECUTABLE     - GHC executable
+
−#  GHC_PKG_VERSION    - ghc-pkg version
+
−#  GHC_PKG_EXECUTABLE - ghc-pkg executable
+
−#
+
−# Copyright (c) 2013, Vittorio Giovara <vittorio.giovara@gmail.com>
+
−#
+
−# Redistribution and use is allowed according to the terms of the BSD license.
+
−# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
−
+
−
+
−find_program(GHC_EXECUTABLE
+
−    NAMES ghc
+
−    PATHS /opt/local/bin /usr/local/bin /usr/bin
+
−    )
+
−
+
−find_program(GHC_PKG_EXECUTABLE
+
−    NAMES ghc-pkg
+
−    PATHS /opt/local/bin /usr/local/bin /usr/bin
+
−    )
+
−
+
−if (GHC_EXECUTABLE)
+
−    # check ghc version
+
−    execute_process(COMMAND ${GHC_EXECUTABLE} -V
+
−                    OUTPUT_VARIABLE GHC_VERSION_OUTPUT
+
−                    ERROR_VARIABLE GHC_VERSION_ERROR
+
−                    RESULT_VARIABLE GHC_VERSION_RESULT
+
−                    OUTPUT_STRIP_TRAILING_WHITESPACE
+
−                    )
+
−
+
−    if(${GHC_VERSION_RESULT} EQUAL 0)
+
−        string(REGEX MATCH "([0-9]+)" GHC_VERSION ${GHC_VERSION_OUTPUT})
+
−    else()
+
−        message(SEND_ERROR "Command \"${GHC_EXECUTABLE} -V\" failed with output: ${GHC_VERSION_ERROR}")
+
−    endif()
+
−endif()
+
−
+
−if (GHC_PKG_EXECUTABLE)
+
−    # check ghc-pkg version
+
−    execute_process(COMMAND ${GHC_PKG_EXECUTABLE} -V
+
−                    OUTPUT_VARIABLE GHC_PKG_VERSION_OUTPUT
+
−                    ERROR_VARIABLE GHC_PKG_VERSION_ERROR
+
−                    RESULT_VARIABLE GHC_PKG_VERSION_RESULT
+
−                    OUTPUT_STRIP_TRAILING_WHITESPACE
+
−                    )
+
−
+
−    if(${GHC_PKG_VERSION_RESULT} EQUAL 0)
+
−        string(REGEX MATCH "([0-9]+)" GHC_PKG_VERSION ${GHC_PKG_VERSION_OUTPUT})
+
−    else()
+
−        message(SEND_ERROR "Command \"${GHC_PKG_EXECUTABLE} -V\" failed with output: ${GHC_PKG_VERSION_ERROR}")
+
−    endif()
+
−endif()
+
−
+
−include(FindPackageHandleStandardArgs)
+
−find_package_handle_standard_args(GHC DEFAULT_MSG GHC_EXECUTABLE GHC_VERSION)
+
−mark_as_advanced(GHC_VERSION)
+
−