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+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+#[=======================================================================[.rst:
+FindPython3
+-----------
+
+Find Python 3 interpreter, compiler and development environment (include
+directories and libraries).
+
+Three components are supported:
+
+* ``Interpreter``: search for Python 3 interpreter
+* ``Compiler``: search for Python 3 compiler. Only offered by IronPython.
+* ``Development``: search for development artifacts (include directories and
+  libraries)
+* ``NumPy``: search for NumPy include directories.
+
+If no ``COMPONENTS`` is specified, ``Interpreter`` is assumed.
+
+To ensure consistent versions between components ``Interpreter``, ``Compiler``,
+``Development`` and ``NumPy``, specify all components at the same time::
+
+  find_package (Python3 COMPONENTS Interpreter Development)
+
+This module looks only for version 3 of Python. This module can be used
+concurrently with :module:`FindPython2` module to use both Python versions.
+
+The :module:`FindPython` module can be used if Python version does not matter
+for you.
+
+.. note::
+
+  If components ``Interpreter`` and ``Development`` are both specified, this
+  module search only for interpreter with same platform architecture as the one
+  defined by ``CMake`` configuration. This contraint does not apply if only
+  ``Interpreter`` component is specified.
+
+Imported Targets
+^^^^^^^^^^^^^^^^
+
+This module defines the following :ref:`Imported Targets <Imported Targets>`
+(when :prop_gbl:`CMAKE_ROLE` is ``PROJECT``):
+
+``Python3::Interpreter``
+  Python 3 interpreter. Target defined if component ``Interpreter`` is found.
+``Python3::Compiler``
+  Python 3 compiler. Target defined if component ``Compiler`` is found.
+``Python3::Python``
+  Python 3 library. Target defined if component ``Development`` is found.
+``Python3::NumPy``
+  NumPy library for Python 3. Target defined if component ``NumPy`` is found.
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This module will set the following variables in your project
+(see :ref:`Standard Variable Names <CMake Developer Standard Variable Names>`):
+
+``Python3_FOUND``
+  System has the Python 3 requested components.
+``Python3_Interpreter_FOUND``
+  System has the Python 3 interpreter.
+``Python3_EXECUTABLE``
+  Path to the Python 3 interpreter.
+``Python3_INTERPRETER_ID``
+  A short string unique to the interpreter. Possible values include:
+    * Python
+    * ActivePython
+    * Anaconda
+    * Canopy
+    * IronPython
+``Python3_STDLIB``
+  Standard platform independent installation directory.
+
+  Information returned by
+  ``distutils.sysconfig.get_python_lib(plat_specific=False,standard_lib=True)``.
+``Python3_STDARCH``
+  Standard platform dependent installation directory.
+
+  Information returned by
+  ``distutils.sysconfig.get_python_lib(plat_specific=True,standard_lib=True)``.
+``Python3_SITELIB``
+  Third-party platform independent installation directory.
+
+  Information returned by
+  ``distutils.sysconfig.get_python_lib(plat_specific=False,standard_lib=False)``.
+``Python3_SITEARCH``
+  Third-party platform dependent installation directory.
+
+  Information returned by
+  ``distutils.sysconfig.get_python_lib(plat_specific=True,standard_lib=False)``.
+``Python3_Compiler_FOUND``
+  System has the Python 3 compiler.
+``Python3_COMPILER``
+  Path to the Python 3 compiler. Only offered by IronPython.
+``Python3_COMPILER_ID``
+  A short string unique to the compiler. Possible values include:
+    * IronPython
+``Python3_Development_FOUND``
+  System has the Python 3 development artifacts.
+``Python3_INCLUDE_DIRS``
+  The Python 3 include directories.
+``Python3_LIBRARIES``
+  The Python 3 libraries.
+``Python3_LIBRARY_DIRS``
+  The Python 3 library directories.
+``Python3_RUNTIME_LIBRARY_DIRS``
+  The Python 3 runtime library directories.
+``Python3_VERSION``
+  Python 3 version.
+``Python3_VERSION_MAJOR``
+  Python 3 major version.
+``Python3_VERSION_MINOR``
+  Python 3 minor version.
+``Python3_VERSION_PATCH``
+  Python 3 patch version.
+``Python3_NumPy_FOUND``
+  System has the NumPy.
+``Python3_NumPy_INCLUDE_DIRS``
+  The NumPy include directries.
+``Python3_NumPy_VERSION``
+  The NumPy version.
+
+Hints
+^^^^^
+
+``Python3_ROOT_DIR``
+  Define the root directory of a Python 3 installation.
+
+``Python3_USE_STATIC_LIBS``
+  * If not defined, search for shared libraries and static libraries in that
+    order.
+  * If set to TRUE, search **only** for static libraries.
+  * If set to FALSE, search **only** for shared libraries.
+
+``Python3_FIND_REGISTRY``
+  On Windows the ``Python3_FIND_REGISTRY`` variable determine the order
+  of preference between registry and environment variables.
+  the ``Python3_FIND_REGISTRY`` variable can be set to empty or one of the
+  following:
+
+  * ``FIRST``: Try to use registry before environment variables.
+    This is the default.
+  * ``LAST``: Try to use registry after environment variables.
+  * ``NEVER``: Never try to use registry.
+
+``CMAKE_FIND_FRAMEWORK``
+  On OS X the :variable:`CMAKE_FIND_FRAMEWORK` variable determine the order of
+  preference between Apple-style and unix-style package components.
+
+  .. note::
+
+    Value ``ONLY`` is not supported so ``FIRST`` will be used instead.
+
+.. note::
+
+  If a Python virtual environment is configured, set variable
+  ``Python_FIND_REGISTRY`` (Windows) or ``CMAKE_FIND_FRAMEWORK`` (macOS) with
+  value ``LAST`` or ``NEVER`` to select it preferably.
+
+Commands
+^^^^^^^^
+
+This module defines the command ``Python3_add_library`` (when
+:prop_gbl:`CMAKE_ROLE` is ``PROJECT``), which has the same semantics as
+:command:`add_library`, but takes care of Python module naming rules
+(only applied if library is of type ``MODULE``), and adds a dependency to target
+``Python3::Python``::
+
+  Python3_add_library (my_module MODULE src1.cpp)
+
+If library type is not specified, ``MODULE`` is assumed.
+#]=======================================================================]
+
+
+set (_PYTHON_PREFIX Python3)
+
+set (_Python3_REQUIRED_VERSION_MAJOR 3)
+
+include (${CMAKE_CURRENT_LIST_DIR}/FindPython/Support.cmake)
+
+if (COMMAND __Python3_add_library)
+  macro (Python3_add_library)
+    __Python3_add_library (Python3 ${ARGV})
+  endmacro()
+endif()
+
+unset (_PYTHON_PREFIX)