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# Find clang-format
#
# CLANG_FORMAT_EXECUTABLE - Path to clang-format executable
# CLANG_FORMAT_FOUND - True if the clang-format executable was found.
# CLANG_FORMAT_VERSION - The version of clang-format found
#
# Copyright 2009-2020 The VOTCA Development Team (http://www.votca.org)
#
# Licensed under the Mozilla Public License Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.mozilla.org/en-US/MPL/2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
find_program(CLANG_FORMAT_EXECUTABLE
NAMES
clang-format-9
clang-format
clang-format-11
clang-format-10
clang-format-8
clang-format-7
DOC "clang-format executable")
mark_as_advanced(CLANG_FORMAT_EXECUTABLE)
# Extract version from command "clang-format -version"
if(CLANG_FORMAT_EXECUTABLE)
execute_process(COMMAND ${CLANG_FORMAT_EXECUTABLE} -version
OUTPUT_VARIABLE clang_format_version
ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE)
if(clang_format_version MATCHES "^.*clang-format version .*")
# clang_format_version sample: "clang-format version 3.9.1-4ubuntu3~16.04.1
# (tags/RELEASE_391/rc2)"
string(REGEX
REPLACE "^.*clang-format version ([.0-9]+).*"
"\\1"
CLANG_FORMAT_VERSION
"${clang_format_version}")
# CLANG_FORMAT_VERSION sample: "3.9.1"
else()
set(CLANG_FORMAT_VERSION 0.0)
endif()
else()
set(CLANG_FORMAT_VERSION 0.0)
endif()
include(FindPackageHandleStandardArgs)
# handle the QUIETLY and REQUIRED arguments and set CLANG_FORMAT_FOUND to TRUE
# if all listed variables are TRUE
find_package_handle_standard_args(CLANG_FORMAT REQUIRED_VARS CLANG_FORMAT_EXECUTABLE VERSION_VAR CLANG_FORMAT_VERSION)
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