diff options
Diffstat (limited to 'packaging/cmake/Modules/NetdataUtil.cmake')
| -rw-r--r-- | packaging/cmake/Modules/NetdataUtil.cmake | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/packaging/cmake/Modules/NetdataUtil.cmake b/packaging/cmake/Modules/NetdataUtil.cmake new file mode 100644 index 000000000..c6a13309f --- /dev/null +++ b/packaging/cmake/Modules/NetdataUtil.cmake @@ -0,0 +1,146 @@ +# 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) + return() + endif() + + message(CHECK_START "Determining host kernel version") + + if(NOT CMAKE_CROSSCOMPILING) + include(CheckIncludeFile) + + check_include_file("linux/version.h" CAN_USE_VERSION_H) + + if(CAN_USE_VERSION_H) + message(CHECK_START "Checking version using linux/version.h") + file(WRITE "${CMAKE_BINARY_DIR}/kversion-test.c" " + #include <stdio.h> + #include <linux/version.h> + + int main() { + printf(\"%i.%i.%i\", LINUX_VERSION_MAJOR, LINUX_VERSION_PATCHLEVEL, LINUX_VERSION_SUBLEVEL); + } + ") + + try_run(_run_success _compile_success + ${CMAKE_BINARY_DIR} + SOURCES ${CMAKE_BINARY_DIR}/kversion-test.c + RUN_OUTPUT_VARIABLE _kversion_output) + + if(_compile_success AND _run_success EQUAL 0) + message(CHECK_PASS "success") + set(_kversion_value "${_kversion_output}") + else() + message(CHECK_FAIL "failed") + endif() + endif() + endif() + + if(NOT DEFINED _kversion_value) + message(CHECK_START "Checking version using uname") + execute_process(COMMAND uname -r + RESULT_VARIABLE _uname_result + OUTPUT_VARIABLE _uname_output) + + if(NOT _uname_result EQUAL 0) + message(CHECK_FAIL "failed") + message(CHECK_FAIL "unknown") + set(HOST_KERNEL_VERSION "0.0.0" CACHE STRING "Detected host kernel version") + return() + else() + message(CHECK_PASS "success") + endif() + + set(_kversion_value "${_uname_output}") + endif() + + string(REGEX REPLACE "-.+$" "" _kversion "${_kversion_value}") + message(CHECK_PASS "${_kversion}") + set(HOST_KERNEL_VERSION "${_kversion}" CACHE STRING "Detected host kernel version") +endfunction() + +# Check what libc we're using. +# +# Sets the specified variable to the name of the libc or "unknown" +function(netdata_identify_libc _libc_name) + if(NOT DEFINED _ND_DETECTED_LIBC) + message(CHECK_START "Detecting libc implementation using ldd") + + execute_process(COMMAND ldd --version + COMMAND grep -q -i -E "glibc|gnu libc" + RESULT_VARIABLE LDD_RESULT + OUTPUT_VARIABLE LDD_OUTPUT + ERROR_VARIABLE LDD_OUTPUT) + + if(NOT LDD_RESULT) + set(${_libc_name} glibc PARENT_SCOPE) + set(_ND_DETECTED_LIBC glibc CACHE INTERNAL "") + message(CHECK_PASS "glibc") + return() + endif() + + execute_process(COMMAND sh -c "ldd --version 2>&1 | grep -q -i 'musl'" + RESULT_VARIABLE LDD_RESULT + OUTPUT_VARIABLE LDD_OUTPUT + ERROR_VARIABLE LDD_OUTPUT) + + if(NOT LDD_RESULT) + set(${_libc_name} musl PARENT_SCOPE) + set(_ND_DETECTED_LIBC musl CACHE INTERNAL "") + message(CHECK_PASS "musl") + return() + endif() + + message(CHECK_FAIL "unknown") + + message(CHECK_START "Looking for libc.so.6") + find_program(LIBC_PATH libc.so.6 + PATHS /lib /lib64 /usr/lib /usr/lib64 + NO_DEFAULT_PATH + NO_PACKAGE_ROOT_PATH + NO_CMAKE_PATH + NO_CMAKE_ENVIRONMENT_PATH + NO_SYSTEM_ENVIRONMENT_PATH + NO_CMAKE_SYSTEM_PATH + NO_CMAKE_INSTALL_PREFIX + NO_CMAKE_FIND_ROOT_PATH) + + if(NOT "${LIBC_PATH}" EQUAL "LIBC_PATH-NOTFOUND") + message(CHECK_PASS "found") + message(CHECK_START "Detecting libc implementation using libc.so.6") + + execute_process(COMMAND "${LIBC_PATH}" + COMMAND head -n 1 + COMMAND grep -q -i -E "gnu libc|gnu c library" + RESULT_VARIABLE LIBC_RESULT + OUTPUT_VARIABLE LIBC_OUTPUT + ERROR_VARIABLE LIBC_ERROR) + + if(NOT LIBC_RESULT) + set(${_libc_name} glibc PARENT_SCOPE) + set(_ND_DETECTED_LIBC glibc CACHE INTERNAL "") + message(CHECK_PASS "glibc") + return() + else() + message(CHECK_FAIL "unknown") + endif() + else() + message(CHECK_FAIL "not found") + endif() + + set(${_libc_name} unknown PARENT_SCOPE) + set(_ND_DETECTED_LIBC unknown CACHE INTERNAL "") + else() + set(${_libc_name} ${_ND_DETECTED_LIBC} PARENT_SCOPE) + endif() +endfunction() |