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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file LICENSE.rst or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindCygwin
----------
Finds Cygwin, a POSIX-compatible environment that runs natively on Microsoft
Windows:
.. code-block:: cmake
find_package(Cygwin [...])
.. note::
This module is primarily intended for use in other :ref:`Find Modules` to help
locate programs when using the ``find_*()`` commands, such as
:command:`find_program`. In most cases, direct use of those commands is
sufficient. Use this module only if a specific program is known to be
installed via Cygwin and is usable from Windows.
Result Variables
^^^^^^^^^^^^^^^^
This module defines the following variables:
``Cygwin_FOUND``
.. versionadded:: 4.2
Boolean indicating whether Cygwin was found.
``CYGWIN_INSTALL_PATH``
The path to the Cygwin root installation directory.
Examples
^^^^^^^^
Finding the Cygwin installation and using its path in a custom find module:
.. code-block:: cmake
:caption: ``FindFoo.cmake``
find_package(Cygwin)
find_program(Foo_EXECUTABLE NAMES foo PATHS ${CYGWIN_INSTALL_PATH}/bin)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Foo REQUIRED_VARS Foo_EXECUTABLE)
See Also
^^^^^^^^
* The :module:`FindMsys` module to find MSYS path in a similar way.
#]=======================================================================]
if (WIN32)
if(CYGWIN_INSTALL_PATH)
set(CYGWIN_BAT "${CYGWIN_INSTALL_PATH}/cygwin.bat")
endif()
find_program(CYGWIN_BAT
NAMES cygwin.bat
PATHS
"C:/Cygwin"
"C:/Cygwin64"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Cygwin\\setup;rootdir]"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Cygnus Solutions\\Cygwin\\mounts v2\\/;native]"
)
get_filename_component(CYGWIN_INSTALL_PATH "${CYGWIN_BAT}" DIRECTORY)
mark_as_advanced(CYGWIN_BAT)
endif ()
if(CYGWIN_BAT AND CYGWIN_INSTALL_PATH)
set(Cygwin_FOUND TRUE)
else()
set(Cygwin_FOUND FALSE)
endif()
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