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# 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)
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