Sunshine/cmake/FindUdev.cmake

53 lines
1.8 KiB
CMake

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