Script might well override a static map, but can't risk it not doing it, and preview completely failing. Better to just not try it for static maps. Some script cfg might help. Could also avoid unnnecessary preview regenerations even if the script was doing nothing at all.
# - Try to find the Glasgow Haskell Compiler executable
# Once done this will define
#
# GHC_FOUND - system has GHC
# GHC_VERSION - GHC version
# GHC_EXECUTABLE - GHC 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
)
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()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(GHC DEFAULT_MSG GHC_EXECUTABLE GHC_VERSION)
mark_as_advanced(GHC_VERSION)