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Diffstat (limited to 'Modules/FindLTTngUST.cmake')
| -rw-r--r-- | Modules/FindLTTngUST.cmake | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/Modules/FindLTTngUST.cmake b/Modules/FindLTTngUST.cmake new file mode 100644 index 0000000..9cd17eb --- /dev/null +++ b/Modules/FindLTTngUST.cmake @@ -0,0 +1,100 @@ +# Distributed under the OSI-approved BSD 3-Clause License. See accompanying +# file Copyright.txt or https://cmake.org/licensing for details. + +#[=======================================================================[.rst: +FindLTTngUST +------------ + +Find +`Linux Trace Toolkit Next Generation (LTTng-UST) <http://lttng.org/>`__ library. + +Imported target +^^^^^^^^^^^^^^^ + +This module defines the following :prop_tgt:`IMPORTED` target: + +``LTTng::UST`` + The LTTng-UST library, if found + +Result variables +^^^^^^^^^^^^^^^^ + +This module sets the following + +``LTTNGUST_FOUND`` + ``TRUE`` if system has LTTng-UST +``LTTNGUST_INCLUDE_DIRS`` + The LTTng-UST include directories +``LTTNGUST_LIBRARIES`` + The libraries needed to use LTTng-UST +``LTTNGUST_VERSION_STRING`` + The LTTng-UST version +``LTTNGUST_HAS_TRACEF`` + ``TRUE`` if the ``tracef()`` API is available in the system's LTTng-UST +``LTTNGUST_HAS_TRACELOG`` + ``TRUE`` if the ``tracelog()`` API is available in the system's LTTng-UST +#]=======================================================================] + +find_path(LTTNGUST_INCLUDE_DIRS NAMES lttng/tracepoint.h) +find_library(LTTNGUST_LIBRARIES NAMES lttng-ust) + +if(LTTNGUST_INCLUDE_DIRS AND LTTNGUST_LIBRARIES) + # find tracef() and tracelog() support + set(LTTNGUST_HAS_TRACEF 0) + set(LTTNGUST_HAS_TRACELOG 0) + + if(EXISTS "${LTTNGUST_INCLUDE_DIRS}/lttng/tracef.h") + set(LTTNGUST_HAS_TRACEF TRUE) + endif() + + if(EXISTS "${LTTNGUST_INCLUDE_DIRS}/lttng/tracelog.h") + set(LTTNGUST_HAS_TRACELOG TRUE) + endif() + + # get version + set(lttngust_version_file "${LTTNGUST_INCLUDE_DIRS}/lttng/ust-version.h") + + if(EXISTS "${lttngust_version_file}") + file(STRINGS "${lttngust_version_file}" lttngust_version_major_string + REGEX "^[\t ]*#define[\t ]+LTTNG_UST_MAJOR_VERSION[\t ]+[0-9]+[\t ]*$") + file(STRINGS "${lttngust_version_file}" lttngust_version_minor_string + REGEX "^[\t ]*#define[\t ]+LTTNG_UST_MINOR_VERSION[\t ]+[0-9]+[\t ]*$") + file(STRINGS "${lttngust_version_file}" lttngust_version_patch_string + REGEX "^[\t ]*#define[\t ]+LTTNG_UST_PATCHLEVEL_VERSION[\t ]+[0-9]+[\t ]*$") + string(REGEX REPLACE ".*([0-9]+).*" "\\1" + lttngust_v_major "${lttngust_version_major_string}") + string(REGEX REPLACE ".*([0-9]+).*" "\\1" + lttngust_v_minor "${lttngust_version_minor_string}") + string(REGEX REPLACE ".*([0-9]+).*" "\\1" + lttngust_v_patch "${lttngust_version_patch_string}") + set(LTTNGUST_VERSION_STRING + "${lttngust_v_major}.${lttngust_v_minor}.${lttngust_v_patch}") + unset(lttngust_version_major_string) + unset(lttngust_version_minor_string) + unset(lttngust_version_patch_string) + unset(lttngust_v_major) + unset(lttngust_v_minor) + unset(lttngust_v_patch) + endif() + + unset(lttngust_version_file) + + if(NOT TARGET LTTng::UST) + add_library(LTTng::UST UNKNOWN IMPORTED) + set_target_properties(LTTng::UST PROPERTIES + INTERFACE_INCLUDE_DIRECTORIES "${LTTNGUST_INCLUDE_DIRS}" + INTERFACE_LINK_LIBRARIES ${CMAKE_DL_LIBS} + IMPORTED_LINK_INTERFACE_LANGUAGES "C" + IMPORTED_LOCATION "${LTTNGUST_LIBRARIES}") + endif() + + # add libdl to required libraries + set(LTTNGUST_LIBRARIES ${LTTNGUST_LIBRARIES} ${CMAKE_DL_LIBS}) +endif() + +include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake) +find_package_handle_standard_args(LTTngUST FOUND_VAR LTTNGUST_FOUND + REQUIRED_VARS LTTNGUST_LIBRARIES + LTTNGUST_INCLUDE_DIRS + VERSION_VAR LTTNGUST_VERSION_STRING) +mark_as_advanced(LTTNGUST_LIBRARIES LTTNGUST_INCLUDE_DIRS) |