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+ − 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)
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+ − 20 # check ghc version
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+ − 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