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 Clang/LLVM executable
# Once done this will define
#
# CLANG_FOUND - system has Clang
# CLANG_VERSION - Clang version
# CLANG_EXECUTABLE - Clang 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(CLANG_EXECUTABLE
NAMES clang-mp-3.3 clang-mp-3.2 clang-mp-3.1 clang-mp-3.0 clang
PATHS /opt/local/bin /usr/local/bin /usr/bin)
if (CLANG_EXECUTABLE)
execute_process(COMMAND ${CLANG_EXECUTABLE} --version
OUTPUT_VARIABLE CLANG_VERSION_OUTPUT
ERROR_VARIABLE CLANG_VERSION_ERROR
RESULT_VARIABLE CLANG_VERSION_RESULT
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(${CLANG_VERSION_RESULT} EQUAL 0)
string(REGEX MATCH "[0-9]+\\.[0-9]+" CLANG_VERSION "${CLANG_VERSION_OUTPUT}")
string(REGEX REPLACE "([0-9]+\\.[0-9]+)" "\\1" CLANG_VERSION "${CLANG_VERSION}")
else()
message(SEND_ERROR "Command \"${CLANG_EXECUTABLE} --version\" failed with output: ${CLANG_VERSION_ERROR}")
endif()
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Clang DEFAULT_MSG CLANG_EXECUTABLE CLANG_VERSION)
mark_as_advanced(CLANG_VERSION)