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# - 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-18 clang-17 clang-16 clang-15 clang-14 clang-13 clang-12 clang-11 clang-10 clang-9 clang-8 clang-7 clang-6.0 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)
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