52 lines
1.8 KiB
CMake
52 lines
1.8 KiB
CMake
# - Try to find Udev
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# Once done this will define
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#
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# UDEV_FOUND - system has udev
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# UDEV_RULES_INSTALL_DIR - the udev rules install directory
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# UDEVADM_EXECUTABLE - path to udevadm executable
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# UDEV_VERSION - version of udev/systemd
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if(NOT WIN32)
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find_package(PkgConfig QUIET)
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if(PKG_CONFIG_FOUND)
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pkg_check_modules(UDEV "udev")
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endif()
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if(UDEV_FOUND)
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if(UDEV_VERSION)
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message(STATUS "Found udev/systemd version: ${UDEV_VERSION}")
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else()
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message(WARNING "Could not determine udev/systemd version")
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set(UDEV_VERSION "0")
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endif()
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execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE}
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--variable=udevdir udev
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OUTPUT_STRIP_TRAILING_WHITESPACE
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OUTPUT_VARIABLE UDEV_RULES_INSTALL_DIR)
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set(UDEV_RULES_INSTALL_DIR "${UDEV_RULES_INSTALL_DIR}/rules.d")
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mark_as_advanced(UDEV_RULES_INSTALL_DIR)
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# Check if udevadm is available
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find_program(UDEVADM_EXECUTABLE udevadm
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PATHS /usr/bin /bin /usr/sbin /sbin
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DOC "Path to udevadm executable")
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mark_as_advanced(UDEVADM_EXECUTABLE)
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# Handle version requirements
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if(Udev_FIND_VERSION)
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if(UDEV_VERSION VERSION_LESS Udev_FIND_VERSION)
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set(UDEV_FOUND FALSE)
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if(Udev_FIND_REQUIRED)
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message(FATAL_ERROR "Udev version ${UDEV_VERSION} less than required version ${Udev_FIND_VERSION}")
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else()
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message(STATUS "Udev version ${UDEV_VERSION} less than required version ${Udev_FIND_VERSION}")
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endif()
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else()
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message(STATUS "Udev version ${UDEV_VERSION} meets requirement (>= ${Udev_FIND_VERSION})")
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endif()
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endif()
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endif()
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endif()
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