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diff --git a/share/cmake-3.18/Modules/CheckOBJCXXCompilerFlag.cmake b/share/cmake-3.18/Modules/CheckOBJCXXCompilerFlag.cmake
deleted file mode 100644
index c32741b..0000000
--- a/share/cmake-3.18/Modules/CheckOBJCXXCompilerFlag.cmake
+++ /dev/null
@@ -1,64 +0,0 @@
-# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
-# file Copyright.txt or https://cmake.org/licensing for details.
-
-#[=======================================================================[.rst:
-CheckOBJCXXCompilerFlag
------------------------
-
-Check whether the Objective-C++ compiler supports a given flag.
-
-.. command:: check_objcxx_compiler_flag
-
-  .. code-block:: cmake
-
-    check_objcxx_compiler_flag(<flag> <var>)
-
-  Check that the ``<flag>`` is accepted by the compiler without
-  a diagnostic.  Stores the result in an internal cache entry
-  named ``<var>``.
-
-This command temporarily sets the ``CMAKE_REQUIRED_DEFINITIONS`` variable
-and calls the ``check_objcxx_source_compiles`` macro from the
-:module:`CheckOBJCXXSourceCompiles` module.  See documentation of that
-module for a listing of variables that can otherwise modify the build.
-
-A positive result from this check indicates only that the compiler did not
-issue a diagnostic message when given the flag.  Whether the flag has any
-effect or even a specific one is beyond the scope of this module.
-
-.. note::
-  Since the :command:`try_compile` command forwards flags from variables
-  like :variable:`CMAKE_OBJCXX_FLAGS <CMAKE_<LANG>_FLAGS>`, unknown flags
-  in such variables may cause a false negative for this check.
-#]=======================================================================]
-
-include_guard(GLOBAL)
-include(CheckOBJCXXSourceCompiles)
-include(CMakeCheckCompilerFlagCommonPatterns)
-
-macro (CHECK_OBJCXX_COMPILER_FLAG _FLAG _RESULT)
-  set(SAFE_CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}")
-  set(CMAKE_REQUIRED_DEFINITIONS "${_FLAG}")
-
-  # Normalize locale during test compilation.
-  set(_CheckOBJCXXCompilerFlag_LOCALE_VARS LC_ALL LC_MESSAGES LANG)
-  foreach(v ${_CheckOBJCXXCompilerFlag_LOCALE_VARS})
-    set(_CheckOBJCXXCompilerFlag_SAVED_${v} "$ENV{${v}}")
-    set(ENV{${v}} OBJCXX)
-  endforeach()
-  CHECK_COMPILER_FLAG_COMMON_PATTERNS(_CheckOBJCXXCompilerFlag_COMMON_PATTERNS)
-  CHECK_OBJCXX_SOURCE_COMPILES("#ifndef __OBJC__\n#  error \"Not an Objective-C++ compiler\"\n#endif\nint main(void) { return 0; }" ${_RESULT}
-    # Some compilers do not fail with a bad flag
-    FAIL_REGEX "command line option .* is valid for .* but not for Objective-C\\\\+\\\\+" # GNU
-    FAIL_REGEX "argument unused during compilation: .*" # Clang
-    ${_CheckOBJCXXCompilerFlag_COMMON_PATTERNS}
-    )
-  foreach(v ${_CheckOBJCXXCompilerFlag_LOCALE_VARS})
-    set(ENV{${v}} ${_CheckOBJCXXCompilerFlag_SAVED_${v}})
-    unset(_CheckOBJCXXCompilerFlag_SAVED_${v})
-  endforeach()
-  unset(_CheckOBJCXXCompilerFlag_LOCALE_VARS)
-  unset(_CheckOBJCXXCompilerFlag_COMMON_PATTERNS)
-
-  set (CMAKE_REQUIRED_DEFINITIONS "${SAFE_CMAKE_REQUIRED_DEFINITIONS}")
-endmacro ()