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function (clang_detect_tool VAR NAME OPTS)
set(NAMES "")
foreach(CNT RANGE 12 22)
list(APPEND NAMES "${NAME}-${CNT}")
endforeach()
list(REVERSE NAMES)
list(APPEND NAMES ${NAME})
find_program(${VAR}
NAMES ${NAMES}
${OPTS}
)
if (NOT ${VAR})
message(WARNING "clang tool ${NAME} (${VAR}) not detected, skipping")
unset(${VAR})
return()
endif()
execute_process(
COMMAND ${${VAR}} "--version"
OUTPUT_VARIABLE _CLANG_TOOL_VERSION
RESULT_VARIABLE _CLANG_TOOL_VERSION_FAILED
)
if (_CLANG_TOOL_VERSION_FAILED)
message(WARNING "A problem was encounterd with ${${VAR}}")
message(WARNING "${_CLANG_TOOL_VERSION_FAILED}")
unset(${VAR})
return()
endif()
string(REGEX MATCH "([7-9]|[1-9][0-9])\\.[0-9]\\.[0-9]" CLANG_TOOL_VERSION
"${_CLANG_TOOL_VERSION}")
if (NOT CLANG_TOOL_VERSION)
message(WARNING "problem parsing ${NAME} version for ${${VAR}}")
unset(${VAR})
return()
endif()
set(_CLANG_TOOL_MINIMUM_VERSION "12.0.0")
if (${CLANG_TOOL_VERSION} VERSION_LESS ${_CLANG_TOOL_MINIMUM_VERSION})
message(WARNING "clang-format version ${CLANG_TOOL_VERSION} not supported")
message(WARNING "Minimum version required: ${_CLANG_TOOL_MINIMUM_VERSION}")
unset(${VAR})
return()
endif()
endfunction()
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