cmake/Modules/FindCygwin.cmake

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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.
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#[=======================================================================[.rst:
FindCygwin
----------
Find Cygwin, a POSIX-compatible environment that runs natively
on Microsoft Windows
#]=======================================================================]
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if (WIN32)
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if(CYGWIN_INSTALL_PATH)
set(CYGWIN_BAT "${CYGWIN_INSTALL_PATH}/cygwin.bat")
endif()
find_program(CYGWIN_BAT
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NAMES cygwin.bat
PATHS
"C:/Cygwin"
"C:/Cygwin64"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Cygwin\\setup;rootdir]"
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Cygnus Solutions\\Cygwin\\mounts v2\\/;native]"
)
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get_filename_component(CYGWIN_INSTALL_PATH "${CYGWIN_BAT}" DIRECTORY)
mark_as_advanced(CYGWIN_BAT)
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endif ()