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#
# Licensed under the Apache 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
#
# http://www.apache.org/licenses/LICENSE-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.
#
# Tries to find the clang-tidy and clang-format modules
#
# Usage of this module as follows:
#
# find_package(ClangTools)
#
# Variables used by this module which can change the default behaviour and need
# to be set before calling find_package:
#
# CLANG_FORMAT_VERSION -
# The version of clang-format to find. If this is not specified, clang-format
# will not be searched for.
#
# ClangTools_PATH -
# When set, this path is inspected in addition to standard library binary locations
# to find clang-tidy and clang-format
#
# This module defines
# CLANG_TIDY_BIN, The path to the clang tidy binary
# CLANG_TIDY_FOUND, Whether clang tidy was found
# CLANG_FORMAT_BIN, The path to the clang format binary
# CLANG_FORMAT_FOUND, Whether clang format was found
set(CLANG_TOOLS_SEARCH_PATHS
${ClangTools_PATH}
$ENV{CLANG_TOOLS_PATH}
/usr/local/bin
/usr/bin
"C:/Program Files/LLVM/bin" # Windows, non-conda
"$ENV{CONDA_PREFIX}/Library/bin") # Windows, conda
if(CLANG_TOOLS_BREW_PREFIX)
list(APPEND CLANG_TOOLS_SEARCH_PATHS "${CLANG_TOOLS_BREW}/bin")
endif()
function(FIND_CLANG_TOOL NAME OUTPUT VERSION_CHECK_PATTERN)
unset(CLANG_TOOL_BIN CACHE)
find_program(CLANG_TOOL_BIN
NAMES ${NAME}-${ARROW_CLANG_TOOLS_VERSION}
${NAME}-${ARROW_CLANG_TOOLS_VERSION_MAJOR}
PATHS ${CLANG_TOOLS_SEARCH_PATHS}
NO_DEFAULT_PATH)
if(NOT CLANG_TOOL_BIN)
# try searching for non-versioned tool and check the version
find_program(CLANG_TOOL_BIN
NAMES ${NAME}
PATHS ${CLANG_TOOLS_SEARCH_PATHS}
NO_DEFAULT_PATH)
if(CLANG_TOOL_BIN)
unset(CLANG_TOOL_VERSION_MESSAGE)
execute_process(COMMAND ${CLANG_TOOL_BIN} "-version"
OUTPUT_VARIABLE CLANG_TOOL_VERSION_MESSAGE
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT (${CLANG_TOOL_VERSION_MESSAGE} MATCHES ${VERSION_CHECK_PATTERN}))
set(CLANG_TOOL_BIN "CLANG_TOOL_BIN-NOTFOUND")
endif()
endif()
endif()
if(CLANG_TOOL_BIN)
set(${OUTPUT}
${CLANG_TOOL_BIN}
PARENT_SCOPE)
else()
set(${OUTPUT}
"${OUTPUT}-NOTFOUND"
PARENT_SCOPE)
endif()
endfunction()
string(REGEX REPLACE "\\." "\\\\." ARROW_CLANG_TOOLS_VERSION_ESCAPED
"${ARROW_CLANG_TOOLS_VERSION}")
find_clang_tool(clang-tidy CLANG_TIDY_BIN
"LLVM version ${ARROW_CLANG_TOOLS_VERSION_ESCAPED}")
if(CLANG_TIDY_BIN)
set(CLANG_TIDY_FOUND 1)
message(STATUS "clang-tidy found at ${CLANG_TIDY_BIN}")
else()
set(CLANG_TIDY_FOUND 0)
message(STATUS "clang-tidy not found")
endif()
find_clang_tool(clang-format CLANG_FORMAT_BIN
"^clang-format version ${ARROW_CLANG_TOOLS_VERSION_ESCAPED}")
if(CLANG_FORMAT_BIN)
set(CLANG_FORMAT_FOUND 1)
message(STATUS "clang-format found at ${CLANG_FORMAT_BIN}")
else()
set(CLANG_FORMAT_FOUND 0)
message(STATUS "clang-format not found")
endif()
find_package_handle_standard_args(ClangTools REQUIRED_VARS CLANG_FORMAT_BIN
CLANG_TIDY_BIN)
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