1a8e43d57d
The `find_package_handle_standard_args(FOUND_VAR)` is deprecated as of CMake 3.3 and both the `<PackageName>_FOUND` and the upper-cased `<PACKAGE_NAME>_FOUND` are set with or without using this option. Additionally, find modules and docs are also synced with this to make it clearer.
108 lines
3.7 KiB
CMake
108 lines
3.7 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#[=======================================================================[.rst:
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FindLTTngUST
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------------
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.. versionadded:: 3.6
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Find
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`Linux Trace Toolkit Next Generation (LTTng-UST) <https://lttng.org/>`__ library.
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Imported target
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^^^^^^^^^^^^^^^
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This module defines the following :prop_tgt:`IMPORTED` target:
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``LTTng::UST``
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The LTTng-UST library, if found
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Result variables
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^^^^^^^^^^^^^^^^
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This module sets the following
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``LTTNGUST_FOUND``
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``TRUE`` if system has LTTng-UST
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``LTTNGUST_INCLUDE_DIRS``
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The LTTng-UST include directories
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``LTTNGUST_LIBRARIES``
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The libraries needed to use LTTng-UST
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``LTTNGUST_VERSION_STRING``
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The LTTng-UST version
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``LTTNGUST_HAS_TRACEF``
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``TRUE`` if the ``tracef()`` API is available in the system's LTTng-UST
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``LTTNGUST_HAS_TRACELOG``
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``TRUE`` if the ``tracelog()`` API is available in the system's LTTng-UST
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#]=======================================================================]
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cmake_policy(PUSH)
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cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
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find_path(LTTNGUST_INCLUDE_DIRS NAMES lttng/tracepoint.h)
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find_library(LTTNGUST_LIBRARIES NAMES lttng-ust)
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if(LTTNGUST_INCLUDE_DIRS AND LTTNGUST_LIBRARIES)
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# find tracef() and tracelog() support
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set(LTTNGUST_HAS_TRACEF 0)
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set(LTTNGUST_HAS_TRACELOG 0)
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if(EXISTS "${LTTNGUST_INCLUDE_DIRS}/lttng/tracef.h")
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set(LTTNGUST_HAS_TRACEF TRUE)
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endif()
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if(EXISTS "${LTTNGUST_INCLUDE_DIRS}/lttng/tracelog.h")
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set(LTTNGUST_HAS_TRACELOG TRUE)
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endif()
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# get version
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set(lttngust_version_file "${LTTNGUST_INCLUDE_DIRS}/lttng/ust-version.h")
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if(EXISTS "${lttngust_version_file}")
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file(STRINGS "${lttngust_version_file}" lttngust_version_major_string
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REGEX "^[\t ]*#define[\t ]+LTTNG_UST_MAJOR_VERSION[\t ]+[0-9]+[\t ]*$")
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file(STRINGS "${lttngust_version_file}" lttngust_version_minor_string
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REGEX "^[\t ]*#define[\t ]+LTTNG_UST_MINOR_VERSION[\t ]+[0-9]+[\t ]*$")
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file(STRINGS "${lttngust_version_file}" lttngust_version_patch_string
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REGEX "^[\t ]*#define[\t ]+LTTNG_UST_PATCHLEVEL_VERSION[\t ]+[0-9]+[\t ]*$")
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string(REGEX REPLACE ".*[\t ]+([0-9]+).*" "\\1"
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lttngust_v_major "${lttngust_version_major_string}")
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string(REGEX REPLACE ".*[\t ]+([0-9]+).*" "\\1"
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lttngust_v_minor "${lttngust_version_minor_string}")
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string(REGEX REPLACE ".*[\t ]+([0-9]+).*" "\\1"
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lttngust_v_patch "${lttngust_version_patch_string}")
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set(LTTNGUST_VERSION_STRING
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"${lttngust_v_major}.${lttngust_v_minor}.${lttngust_v_patch}")
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unset(lttngust_version_major_string)
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unset(lttngust_version_minor_string)
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unset(lttngust_version_patch_string)
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unset(lttngust_v_major)
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unset(lttngust_v_minor)
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unset(lttngust_v_patch)
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endif()
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unset(lttngust_version_file)
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if(NOT TARGET LTTng::UST)
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add_library(LTTng::UST UNKNOWN IMPORTED)
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set_target_properties(LTTng::UST PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${LTTNGUST_INCLUDE_DIRS}"
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INTERFACE_LINK_LIBRARIES ${CMAKE_DL_LIBS}
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IMPORTED_LINK_INTERFACE_LANGUAGES "C"
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IMPORTED_LOCATION "${LTTNGUST_LIBRARIES}")
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endif()
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# add libdl to required libraries
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set(LTTNGUST_LIBRARIES ${LTTNGUST_LIBRARIES} ${CMAKE_DL_LIBS})
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endif()
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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find_package_handle_standard_args(LTTngUST
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REQUIRED_VARS LTTNGUST_LIBRARIES
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LTTNGUST_INCLUDE_DIRS
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VERSION_VAR LTTNGUST_VERSION_STRING)
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mark_as_advanced(LTTNGUST_LIBRARIES LTTNGUST_INCLUDE_DIRS)
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cmake_policy(POP)
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