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# Utility functions used by other modules.
#
# Copyright (c) 2024 Netdata Inc.
# SPDX-License-Identifier: GPL-3.0-or-later
include_guard()
# Determine the version of the host kernel.
#
# Only works on UNIX-like systems, stores the version in the cache
# variable HOST_KERNEL_VERSION.
function(netdata_detect_host_kernel_version)
if(DEFINED HOST_KERNEL_VERSION)
if(NOT DEFINED CACHE HOST_KERNEL_VERSION)
message(STATUS "Using user supplied kernel version (${HOST_KERNEL_VERSION}) instead of detecting it.")
endif()
endif()
message(CHECK_START "Determining host kernel version")
execute_process(COMMAND uname -r
RESULT_VARIABLE _uname_result
OUTPUT_VARIABLE _uname_output)
if(NOT _uname_result)
message(CHECK_FAIL "unknown")
set(HOST_KERNEL_VERSION "0.0.0" CACHE STRING "Detected host kernel version")
return()
endif()
string(REGEX REPLACE "-.+$" "" _kversion "${_uname_output}")
message(CHECK_PASS "${_kversion}")
set(HOST_KERNEL_VERSION "${_kversion}" CACHE STRING "Detected host kernel version")
endfunction()
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