60 lines
2.0 KiB
CMake
60 lines
2.0 KiB
CMake
#.rest:
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# FindEpoll
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# --------------
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#
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# Try to find epoll or epoll-shim on this system. This finds:
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# - some shim on Unix like systems (FreeBSD), or
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# - the kernel's epoll on Linux systems.
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#
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# This will define the following variables:
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#
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# ``epoll_FOUND``
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# True if epoll is available
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# ``epoll_LIBRARIES``
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# This has to be passed to target_link_libraries()
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# ``epoll_INCLUDE_DIRS``
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# This has to be passed to target_include_directories()
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#
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# On Linux, the libraries and include directories are empty,
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# even though epoll_FOUND may be set to TRUE. This is because
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# no special includes or libraries are needed. On other systems
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# these may be needed to use epoll.
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#=============================================================================
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# SPDX-FileCopyrightText: 2019 Tobias C. Berner <tcberner@FreeBSD.org>
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#
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# SPDX-License-Identifier: BSD-2-Clause
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#=============================================================================
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find_path(epoll_INCLUDE_DIRS sys/epoll.h PATH_SUFFIXES libepoll-shim)
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if(epoll_INCLUDE_DIRS)
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# On Linux there is no library to link against, on the BSDs there is.
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# On the BSD's, epoll is implemented through a library, libepoll-shim.
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if( CMAKE_SYSTEM_NAME MATCHES "Linux")
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set(epoll_FOUND TRUE)
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set(epoll_LIBRARIES "")
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set(epoll_INCLUDE_DIRS "")
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else()
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find_library(epoll_LIBRARIES NAMES epoll-shim)
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(epoll
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FOUND_VAR
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epoll_FOUND
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REQUIRED_VARS
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epoll_LIBRARIES
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epoll_INCLUDE_DIRS
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)
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mark_as_advanced(epoll_LIBRARIES epoll_INCLUDE_DIRS)
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include(FeatureSummary)
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set_package_properties(epoll PROPERTIES
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URL "https://github.com/FreeBSDDesktop/epoll-shim"
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DESCRIPTION "small epoll implementation using kqueue"
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)
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endif()
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else()
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set(epoll_FOUND FALSE)
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endif()
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mark_as_advanced(epoll_LIBRARIES epoll_INCLUDE_DIRS)
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