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Delete main? This cannot be undone.

FindLLVMAr.cmake
include(FeatureSummary)

find_program(LLVMAR_EXECUTABLE
  NAMES llvm-ar
  DOC "The llvm-ar executable"
  )

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(LLVMAr
  DEFAULT_MSG
  LLVMAR_EXECUTABLE)

SET_PACKAGE_PROPERTIES(LLVMAr PROPERTIES
  URL https://llvm.org/docs/CommandGuide/llvm-ar.html
  DESCRIPTION "create, modify, and extract from archives"
)